Current status of all MEMS projects
K. Stifter, H. Magoon, A. Nuñez, Giana Pérez, H. Stueber
FNAL projects
MEMS characterization, aka Lab A tests (Hannah): Cold run still delayed - our LNAs are disconnected. Still 1 day or 1 night MEMS coming in the future. After that, will have to move the MEMS, and maybe the cryostat. Think about if we want to stay in Lab A long term - depends on outcome of upcoming tests.
Qubit characterization, aka LOUD tests (Hannah, Ryan): Re-wiredbonded, reinstalled. Close-up as soon as mid/late next week, but that’s a big IF.
QUIET tests: Any updated timeline on this? Nothing new. Aim for installation in April, tests over summer. Horizontal shielded plate being designed by NU students, presenting on that in mid-late Feb in this meeting.
SLAC projects
New MEMS set-up at SLAC (Haley): Copper housing set up with plastic reflective focuser. Saw significant misalignment in x and z. Able to realign in X. Can’t in Z… beam spot is too low and not fully on the MEMS mirror. Going to try and shave off some height from the translation plates. In any case, spot size at MEMS is ~3.5mm, too large for the 2mm mirror. Can either go to the 4.6mm mirror or install a pin hole - to be done tomorrow.
Send set-up to Syracuse: Meeting with this team later today to define needs.
Reflective focusing (Anthony): Updates to drawings are done, getting 3D printed. Copper version to be ordered soon. Progress on who is paying for copper version? Sounds like SLAC is going to pay for it. Can we turn the holes into slots? Have to think about thermal contractions… maybe not the right solution.
Optical chopping (Giana): Demo code is now working on the computer at SLAC! Next step is custom code, which some combination of Haley + Noah will help.
Big picture
MEMS device paper (Kelly & Hannah): Hannah has been working on it! Going to discuss it next week w/ Dan.
2023 goals + timeline: Requested by Rakshya. Coming… soonish.
SPIE conference: Next week! Kelly will give a MEMS talk, can also talk to a bunch vendors - Mirrorcle, OZ Optics, etc.
Simulations: Start to work on aligning sims goals with MEMS goa, make sure they are in the same language. Informal meeting at first, then bring to larger meeting.
1/18/23
SLAC projects - to-do list
New MEMS set-up at SLAC (Haley): Goal is to install a new set-up at SLAC with an HVeV device. Several tests need to be performed to select standard hardware (mirror size, cables). Many things need to be planned + purchased. Device mounting needs to be designed.
Send set-up to Syracuse: Similar set-up to be prepared and sent to collaborators at Syracuse, to run with their qubit.
Reflective focusing (Anthony): Design is done. Several “cherry-on-top” tests to perform. Ordering final versions in copper for both SLAC & FNAL - who buys?
Optical chopping (Giana): Basic set-up operable, some improvements coming. Current challenge: MEMS scripting. Variety of tests and optimizations follow.
FNAL projects
MEMS characterization, aka Lab A tests (Hannah): Operable fully remote. Current challenge: struggling to get stable fridge time. Dylan’s student Stella to work on RFSoC KID readout soon. Eventually, may move to SLAC for more control over fridge schedule and nicer device (HVeV).
Qubit characterization, aka LOUD tests (Hannah, Ryan): MEMS system fully installed, remote operations need to be honed. Current challenge: qubit housing and mounting (to say nothing of operation) is hard. Fridge temp tests could happen soon.
QUIET tests: When should we start planning for these? Will we want to move the Si qubit here? Will we want a second unit on the Sapphire qubit? When?
Big-picture projects
MEMS device paper (Kelly & Hannah): Intro and device sections drafted. Results section next! No specific timeline as of now.
2023 goals + timeline: Requested by Rakshya, but subject to change dramatically in coming months. Forthcoming.
2/15/2023
FNAL Projects
MEMS characterization, aka Lab A stuff: KID device LNA bias ports have been repurposed. We will need to move our setup at some point, but unsure of when.
Qubit characterization, aka LOUD stuff: Run 1 is starting soon!
SLAC Projects - to-do list
New MEMS set-up at SLAC (Haley): Tested mirror alignment with pinhole - better but still low by ¾ mm. Had mirror housings shaved, seemed to fix. Measured scanning range, tested Sukie’s constantin cable warm (it works!). Device mounting in progress.
Syracuse: Got CAD files from Syracuse
Reflective focusing (Anthony): Making changes to MEMS/Syracuse can CAD. Got 3D printed parts for reflective housing. Original assembly problems seem fixed
Optical chopping (Giana): Basic scanning/oscilloscope reading working. Working on MEMS script to get different pulse patterns/see how this affects pulse time.
Big Picture Projects
MEMS device paper (Kelly & Hannah): Intro, device, operations, and results sections drafted. Still no timeline specified, but will become a priority in ~2 weeks once schedules open up
2/22/2023
SLAC Projects - to-do list
New MEMS set-up at SLAC (Haley): Device mounting updates - can get up to 22.5 cm RFL OAP from Thorlabs. Determining output plate based on this
Syracuse: Meeting this week?
Reflective focusing (Anthony): Making changes to MEMS/Syracuse can CAD. Got 3D printed parts for reflective housing. Tested?
Optical chopping (Giana): Using scanning demo code to determine relationship between slit width and pulse duration. It’s a bit slow right now, working on how to speed it up and get shorter pulses.
3/1/2023
FNAL projects
LOUD operations: At least one of the qubits on the silicon chip is alive! Hannah, Ryan, et al. are hard at work with qubit checks. What is the run schedule? Kelly needs to follow up with Ryan. Possible tests this run: cryogenic tests of MEMS only, noise tests of device + MEMS but no laser, full chain of MEMS + laser + device (some planning required)
Lab A: No update, Kelly needs to check in w/ Adam
QUIET: Should start planning this setup. Who will work on this? Kelly needs to check in with Dan. The work will need to interface w/ Grace + Alejandro’s work on magnetic shielding. Several changes were made from last iteration, and Grace will send an updated slide deck.
Xometry: They are making a site visit to FNAL. Anything in particular to talk about? Sounds like not really.
SLAC projects - to-do list
New MEMS setup at SLAC + reflective focusing (Haley + Anthony): Update slides. Design for mounting HVeV detectors is coming along nicely! Some simplifying changes to make (Haley). Also, struggling to find focal length of reflective housing… because we’ve been using the mirror backwards. Requires some checks (Anthony), but should be easy to fix.
New MEMS setup at Syracuse: They said they can increase magnetic shielding diameter to 5”. Now we need to determine if/how we can adjust the MEMS housing to make it fit. Can Anthony work on this? Also want to look into more radical ideas (just sketches), probably Kelly. Need to schedule a follow-up meeting with them in 1-2 weeks.
Optical chopping (Giana): Update slides. Chopping is working, and see a clear relationship between slit width and pulse width. Still limited to O(100)us pulse widths. Conclusion is that we are limited by spot size. Next step is to use reflective focusing system for a smaller spot size.
Big picture projects
Device paper: Back to being a high priority! For anyone who can spare the time…
UCLA DM conference: Kelly is prepping a poster. Scheduling a chat w/ Matt Shaw (SNSPD expert) to talk about his experience with light leakage from fibers.
April APS conference: Kelly is prepping a 10 + 2min talk (Dark matter I session, first parallel on first day)
Invited seminars: UChicago on May 22nd (unsure if talking about MEMS yet), also invitations to Caltech and Yale in the fall
3/8/2023
FNAL projects
LOUD operations: At least one of the qubits on the silicon chip is alive. Probably ~3 weeks out from doing MEMS tests, some planning required (Kelly).
Lab A: Adam says we don’t need to remove it yet, but will soon.
QUIET: Grace + Alejando (+ Dan) have this well in hand! Should present in a MEMS meeting soon. Add Alejandro to email list (Kelly).
SLAC projects - to-do list
New MEMS setup at SLAC + reflective focusing (Haley + Anthony): Update slides. Update on HVeV mounting: going well, close to 3D printing. Update on reflective focusing redesign: pinhole is limiting factor, next step is to drill out pinhole & retest. Need to touch base w/ Mirrorcle, since we haven’t heard back about quote for mirrors (Kelly). Breakout boards: either doing custom cables or breakboards as-is, Noah will figure it out.
New MEMS setup at Syracuse: They said they can increase magnetic shielding diameter to 5”. Anthony will start working on if/how we can adjust the MEMS housing to make it fit. Also want to look into more radical ideas (just sketches), probably Kelly. Need to schedule a follow-up meeting with them in 1-2 weeks.
Optical chopping (Giana): Update slides. Update on using a reduced spot size: none this week.
Big picture projects
Device paper: Back to being a high priority! For anyone who can spare the time…
UCLA DM conference: Kelly is prepping a poster. Scheduling a chat w/ Matt Shaw (SNSPD expert) to talk about his experience with light leakage from fibers.
April APS conference: Kelly is prepping a 10 + 2min talk (Dark matter I session, first parallel on first day)
Invited seminars: UChicago on May 22nd (unsure if talking about MEMS yet), also invitations to Caltech and Yale in the fall
3/15/2023
FNAL projects
LOUD operations: At least TWO of the qubits on the silicon chip are alive. Probably ~1.5-3 weeks out from doing MEMS tests, some planning required (Kelly).
Lab A: Adam says we don’t need to remove it yet, but will soon.
QUIET: Grace + Alejando (+ Dan) have this well in hand! Design is largely done and in CAD. Should present in a MEMS meeting in 1-2 weeks (Kelly to get in touch). COMSOL work is now moving forward.
SLAC projects - to-do list
New MEMS setup at SLAC + reflective focusing (Haley + Anthony): Update slides. Update on HVeV mounting: 3D printed! Just need to check on if everything fits. Update on reflective focusing redesign: drilled out pinhole, making progress. Need to touch base w/ Mirrorcle, since we haven’t heard back about quote for mirrors (Kelly).
New MEMS setup at Syracuse: They said they can increase magnetic shielding diameter to 5”. Update on MEMS housing adjustment: Anthony is busy this week. Also want to look into more radical ideas (just sketches), probably Kelly. Need to schedule a follow-up meeting with them in 1-2 weeks.
Optical chopping (Giana): Update slides. Update on using a reduced spot size: no Giana this week.
Big picture projects
Device paper: Back to being a high priority! Hannah & Dan are working on it for now.
UCLA DM conference: Kelly is prepping a poster. Scheduling a chat w/ Matt Shaw (SNSPD expert) to talk about his experience with light leakage from fibers.
April APS conference: Kelly is prepping a 10 + 2min talk (Dark matter I session, first parallel on first day)
Invited seminars: UChicago on May 22nd, also invitations to Caltech and Yale in the fall
3/22/2023
FNAL projects
LOUD operations: Fridge is warm for >3 weeks. Plan to move qubit deeper in the magnetic shielding - buy the things NOW. Some planning for MEMS tests required (Kelly + Hannah?)
Lab A: Uninstall, bring with to SLAC (4/24), bring a different version back to FNAL (5/1) (Kelly)
QUIET: Update on design and/or COMSOL: small edits to mounting, slides updated. COMSOL in progress. Will present in a MEMS meeting in 2 weeks (4/5) (Kelly to get in touch)
SLAC projects - to-do list
New MEMS setup at SLAC + reflective focusing (Haley + Anthony): Update slides. Next steps on spot size: drill out pin hole. Next steps on HVeV mounting: finish 3D printing test, order copper parts. Update on reflective focusing redesign: coming up! Need to touch base w/ Mirrorcle, since we haven’t heard back about quote for mirrors (Kelly). Will send list of fiber parts (Kelly).
New MEMS setup at Syracuse: They said they can increase magnetic shielding diameter to 5”. Update on MEMS housing adjustment: coming up! Also want to look into more radical ideas (just sketches), probably Kelly. Need to schedule a follow-up meeting with them soon.
Optical chopping (Giana): Update slides. Update on using a reduced spot size: no update this week.
Big picture projects
Device paper: Back to being a high priority! Hannah wrote a bunch, and Dan will do first pass edit. Link? Chat on friday, editing party next week.
UCLA DM conference: Kelly is prepping a poster - will send for comments ASAP. Scheduling a chat w/ Matt Shaw (SNSPD expert) to talk about his experience with light leakage from fibers.
April APS conference: Kelly is prepping a 10 + 2min talk (Dark matter I session, first parallel on first day)
Invited seminars: UChicago on May 22nd, also invitations to Caltech and Yale in the fall.
4/5/2023
FNAL projects
LOUD operations: Be ready to cool down in ~3 weeks. Status of the plan to move the qubit lower in the shield + flip it: placed order for focuser (5 weeks), placed order for copper bracket (2 weeks). Do we have a 650nm 20cm focuser around that we could use in the meantime? (Kelly) Discussion around material for new housing: plain aluminum is bad for thermalization, gold-plated aluminum is bad for magnetic shielding. So decision is to stick with what we have for now and reassess after next run. Some planning for MEMS tests required (Kelly + Hannah). Need to work on operating MEMS + RFSoC from same notebook (Hannah). Can test this when we uninstall/reinstall qubit housing.
Lab A: Uninstall (ASAP), reinstall laser + driver into LOUD, bring housing with to SLAC (4/24), bring a different version back to FNAL (5/1) (Kelly)
QUIET: Update on design and/or COMSOL: design is largely done, preliminary dims done. Will present in a MEMS meeting next week.
SLAC projects - to-do list
New MEMS setup at SLAC + reflective focusing (Anthony): Update on spot size: Still seeing ~140um w/ 1.5mm hole in plate. Could go up to 3mm. Could swap stationary and MEMS mirrors. Update on HVeV mounting: printed and needs to be tested. Update on reflective focusing redesign: this is done, will be printed + tested. Need to touch base w/ Mirrorcle, since we haven’t heard back about quote for mirrors (Kelly).
New MEMS setup at Syracuse: They said they can increase magnetic shielding diameter to 5”. Update on MEMS housing adjustment: coming. Also want to look into more radical ideas (just sketches), probably Kelly. Meeting with them tomorrow!
Optical chopping (Giana): Update on using a reduced spot size? Kelly to check in.
Big picture projects
Device paper: Back to being a high priority! Hannah wrote a bunch, and Dan will do first pass edit.
April APS conference: Kelly is prepping a 10 + 2min talk (Dark matter I session, first parallel on first day)
Abstract for LTD: End of July, abstract due 4/24
Invited seminars: UChicago on May 22nd, also invitations to Caltech and Yale in the fall.
4/12/2023
FNAL projects
LOUD operations: Be ready to cool down at beginning of May. Status of plan to move the qubit lower in the shield: placed order for focuser (Placed! 5 weeks), placed order for copper bracket (ships on 4/17 - on track?). Some planning for MEMS tests required (Kelly + Hannah). Status on operating MEMS + RFSoC from same notebook: Hannah working on it, but having python version problems (needs 2.7). Need to think about how/if we can access MEMS from LOUD 0, since it’s plugged into LOUD 1.
Lab A: Uninstall (4/20), reinstall laser + driver into LOUD (in progress), bring housing with to SLAC (4/24), bring a different version back to FNAL (5/1) (Kelly)
QUIET: Update on design and/or COMSOL: Had a conversation about dimensions on Monday, working on minor updates. Going to be updating COMSOL based on final-ish dimensions. Presenting soon!
SLAC projects - to-do list
New MEMS setup at SLAC + reflective focusing (Anthony): Update on spot size: swapped the locations of the MEMS and stationary mirror, will test MEMS scanning range soon. Update on HVeV mounting: looks good! Not screwed in (need to order screws). Update on reflective focusing redesign: Move forward with the copper versions (after a design review, 10am PT/12pm CT 4/13). Need to touch base w/ Mirrorcle, since we haven’t heard back about quote for mirrors - ask about larger sizes (Kelly).
New MEMS setup at Syracuse: Going to get a Syracuse PD and/or grad to help w/ CAD for MEMS adjustment due to lack of person power this quarter. Need to send them an email (Kelly)
Optical chopping (Giana): Update on using a reduced spot size: spot size investigations last week - spot size reduced when using OAP (2 different sizes), but lots of odd patterns due to hand alignment. Looking to incorporate collimator. Might want to get a second version of the reflective focusing housing for this? (Aviv, Giana, Anthony, Kelly - will start a message thread)
Big picture projects
Device paper: Back to being a high priority! Dan did first pass edit, Kelly and Hannah to respond to comments. How much of the SLAC work (reflective focusing + optical chopping) to include?
April APS conference: Kelly is prepping a 10 + 2min talk (Dark matter I session, first parallel on 4/15)
Abstract for LTD: End of July, abstract due 4/24
Invited seminars: UChicago on May 22nd, also invitations to Caltech and Yale in the fall.
4/19/2023
FNAL projects
LOUD operations: Be ready to cool down at beginning of May. Status of plan to move the qubit lower in the shield: placed order for focuser (Placed! Estimated to ship May 9-16th), placed order for copper bracket (ships today - issue with order). Some planning for MEMS tests required (Kelly + Hannah). Status on operating MEMS + RFSoC from same notebook: python issue resolved (hopefully?) but having issues communicating with the box through serial connection.
Lab A: Uninstall (4/20), reinstall laser + driver into LOUD (in progress), bring housing with to SLAC (4/24), bring a different version back to FNAL (5/1) (Kelly)
QUIET: Update on design and/or COMSOL: Lots of progress from Grace and Alejandro! Need to start thinking about component mounting: (attempt one at design)
MEMS software
https://mirrorcletech.com/documentation/Getting%20Started/Introduction.html
New software update fixes the two issues I’ve been struggling with:
It would be nice to see if we can get access to the new setup
Note about new bracket
Threading on these holes was flagged in inspection for being too loose
Plan:
If the threading feels too loose:
4/26/2023
FNAL projects
LOUD operations: All external hardware installed for MEMS system last Friday. Copper bracket has arrived - needs to be cleaned and installed. Ryan to clean it. Schedule for installation? Status on operating MEMS + RFSoC from same notebook: MEMS commands working from the LOUD command line! Needs to be tested once qubit housing comes off. Not yet working in a Jupyter notebook, but should be possible. Some planning for upcoming MEMS tests required (Kelly + Hannah to meet on Friday).
Lab A: Uninstalled MEMS box. Optical fibers remain, and can be removed next time they open (but not pressing). Old MEMS box to stay at SLAC, and new copy to come back to FNAL (5/1).
QUIET: Update on magnetic shielding design/COMSOL: Design is very nice! Minor comments about thermalization/machinability, but largely ready to be handed off. Update on component mounting or possible devices: presentation from last week was updated with comments.
SLAC projects
New MEMS setup at SLAC + reflective focusing (Anthony): Update on spot size: swapped positions of MEMS and stationary mirrors - alignment issues, but looks like it could work. Update on HVeV mounting: need to put in a Xometry order (drawings next on the list). Update on reflective focusing redesign: changes implemented, 3D print to be done, drawings being worked on. Need to touch base w/ Mirrorcle (Kelly).
New MEMS setup at Syracuse: Going to get a Syracuse PD and/or grad to help w/ CAD for MEMS adjustment due to lack of person power this quarter. Need to send them an email (Kelly).
Optical chopping (Giana): Update on using a reduced spot size? Want to use the 3D printed version of the reflective focusing housing for this - need to start a 3D printing thread (Kelly, Aviv, Giana, Anthony).
Big picture projects
Device paper: Back to being a high priority! Dan did first pass edit, Kelly and Hannah to respond to comments. How much of the SLAC work (reflective focusing + optical chopping) to include?
Abstract for LTD: End of July, abstract due May 6. What do we want to promise for results? Talk next week.
Invited seminars: UChicago on May 22nd, also Caltech and Yale in the fall.
Hannah’s course presentation: poster due on Monday!
5/3/2023
FNAL projects
LOUD operations: Kelly + Hannah made rough plan for MEMS tests in upcoming run (see speaker notes). External hardware is in place. Full system tests happening today/tomorrow. Internal qubit hardware being adjusted this week, should finish by Friday. Closing up on Monday (hopefully).
Lab A: Optical fibers remain, and can be removed next time they open (but not pressing).
QUIET: Brought a copy of updated MEMS housing back to FNAL (from SLAC). Still need to order an output plate for whatever device we want, as well as a copy of the back wall in LOUD. Update on magnetic shielding design/COMSOL? Who is taking this work over from Grace? Other tasks: optical path, component mounting, upgrade to reflective focusing.
MEMS + KID: Sukie coming this summer! Maybe working on putting a MEMS system on a KID device? In what fridge? Need to talk w/ Dylan and Noah (Kelly).
SLAC projects
New MEMS setup at SLAC + reflective focusing (Anthony): Update on spot size: work to realign won’t be that helpful, because reflective focuser design has been changed. Need to 3D print + order: Anthony working on drawings, will send CAD to Aviv, and update drawings in github. Update on HVeV mounting? Kelly has a few comments on the design - who can make these changes? Update on reflective focusing redesign: Done! Needs to be 3D-printed + ordered. Productive meeting w/ Mirrorcle: can’t fix broken mirrors, can fix broken controller, quoted us for 5 more 4.6mm mirrors, quoted us for Linux-based software, working on controller and more mirror quotes.
New MEMS setup at Syracuse: Going to get a Syracuse PD and/or grad to help w/ CAD for MEMS adjustment due to lack of person power this quarter. Need to send them an email (Kelly).
Optical chopping (Giana): Could use the refractive focusing, if desired. Otherwise, want to use the 3D printed version of the reflective focusing housing for this - need to start a 3D printing thread (Kelly, Aviv, Giana, Anthony).
Overall note: We’re getting a post-bac student starting in June! 1 year, full time, initially dedicated to MEMS.
Big picture projects
Device paper: Back to being a high priority! Dan did first pass edit, Kelly and Hannah to respond to comments. How much of the SLAC work (reflective focusing + optical chopping) to include?
Abstract for LTD: End of July, abstract due May 6. What do we want to promise for results?
Invited seminars: UChicago on May 22nd, also Caltech and Yale in the fall.
5/17/2023
FNAL projects
LOUD operations (running slide deck): All MEMS hardware in LOUD is ready for Run 2, including new focuser. Going to aluminum tape everything tomorrow. Today: discussion of planned MEMS tests (see linked slides).
QUIET: Update on magnetic shielding design/COMSOL: slides (looking for feedback by Monday) Who is taking this work over from Grace? Other tasks: design + order output plate depending on device, order copy of back wall, plan optical path, upgrade component mounting, eventually upgrade to reflective focusing.
MEMS + KID?: Sukie coming this summer, with goal of doing MEMS + KID. Some design work + Xometry order needed. BUT, not clear if there is immediate space in an operating fridge. Check to see if there is space in LOUD (Kelly, in person tomorrow + Hannah, in CAD). If so, will sit down w/ Dylan to hash things out.
Lab A: Optical fibers remain, and can be removed next time they open (but not pressing).
SLAC projects
Overall: Noshin (post-bac student) starting with us soon! Need to meet w/ her (Kelly). We got money for B33 upgrades - let me/Noah know if there’s anything we should buy (cabinets, drawers, etc.)
New MEMS setup at SLAC + reflective focusing (Anthony): Update on reflective focuser/spot size: Updates are done, CAD sent to Aviv for 3D printing, drawings are done, and Xometry order can be placed soon. Update on HVeV mounting: Anthony to implement small changes once reflective focusing is ordered. Mirrorcle orders: Order more 4.6mm mirrors ASAP, need to negotiate software quote (Kelly/Noah).
New MEMS setup at Syracuse: No progress due to lack of person-power. Need to see if they have bandwidth to help (Kelly).
Optical chopping (Giana): Missing an adapter to use refractive focusing… ThorLabs order should go in ASAP. Want to use the 3D printed version of the reflective focusing housing for this - should be in progress.
Big picture projects
Device paper: Back to being a high priority! Hannah made some edits, back in Dan’s court.
Abstract for LTD: Submitted! Waiting to hear back.
Invited seminars: UChicago on May 22nd, also Caltech and Yale in the fall.
5/31/2023
FNAL projects
Overall: Hannah starts next Tuesday! Sukie is arriving… soon?
LOUD operations: Chiller is really broken this time - downtime of at least 2 weeks. What can we do in the meantime? 1. Buy improved cabling (SLAC may have raw materials - Kelly to get someone to check, maybe Hannah can make? We’ll talk about it) and swap it out. To do swap, requires opening fridge again (need access to all stages) and removing qubit can to do tests. Problem: swap requires >4ft work… 2. Further improve light leakage with more aluminum tape. Requires opening fridge again and removing qubit can (only access to MC stage). Note: removing/reinstalling qubit can is 1-2 days of extra work.
QUIET: Update on magnetic shielding design/COMSOL? Noah had some comments that he passed along to Dan. Other tasks: design + order output plate depending on device, order copy of back wall, plan optical path, upgrade component mounting, eventually upgrade to reflective focusing.
MEMS + KID?: With some clever arranging of things, seems like there might be space in upcoming run for MEMS + KID package. Need to sit down w/ Dylan to hash things out (Kelly, Hannah - Kelly to set up a meeting). Should communicate w/ Rakshay about this. If okayed - buy stuff for second setup.
Lab A: Everything uninstalled (and sent to SLAC). Last update! Ok, actually, we have to check and make sure we got our NbTi cable back.
SLAC projects
Overall: Noshin officially started at SLAC! Still working on finding cabinets for B33 (delivered by Oct 1) - let me know if we should get anything else.
Reflective focusing: Updates are done, drawings are done. Nico to do 3D print (in progress, in B33 resin printer). Kelly to review design + drawings, and Noshin put in Xometry order. Noshin to test spot size upon arrival.
New MEMS setup at SLAC: Decided to use old setup from Lab A in CDMS BlueFors + refractive focuser setup (fastest solution). Noshin to do a test fit on Monday (Kelly to send pictures of previous mounting). Noshin to implement changes to output plate, 3D print, and put in Xometry order. Noshin to lay out full optical path and order missing parts. Kelly to order more 4.6mm mirrors ASAP and negotiate software quote.
Optical chopping: Noshin to make measurements, but waiting on either SMA-FCPC adapter to show up at SLAC or for reflective housing to be 3D printed (preferred solution). Might need to order more optical parts (have 2x 15cm OAP mirrors, need to check on collimators).
New MEMS setup at Syracuse: No progress due to lack of person-power. Need to see if they have bandwidth to help (Kelly).
Big picture projects
Device paper: This is on Kelly, Dan, Hannah. Status?
Abstract for LTD: Accepted for a talk! Need to register by June 12 + write slides (waiting to see if we’ll have more results).
Invited seminars: UChicago seminar went well - people generally skeptical but supportive of quantum devices as phonon sensors. Lots of questions on backgrounds and discrimination. Caltech, Berkeley, and Yale in the fall - need to pick dates.
6/7/2023
FNAL projects
LOUD operations: Still in downtime, w/ no clear timeline on starting up again. Working on improved cabling (Kelly, Hannah) - focus on discussing this today (slides). Would eventually like to improve light leakage by adding more aluminum tape to MEMS box. Both changes require opening fridge, which will be done when it is convenient, and maybe not before the next run.
QUIET: Update on magnetic shielding design/COMSOL? Other tasks: design + order output plate depending on device, order copy of back wall, plan optical path, upgrade component mounting, eventually upgrade to reflective focusing.
MEMS + KID: Dylan, Hannah, and Kelly have determined that a second MEMS unit will fit in LOUD (slides) and have made a task list for what needs to be done (here). Overlap w/ cabling upgrade being handled by Kelly and Hannah, and otherwise waiting for Sukie to show up.
SLAC projects
Overall: Drawers and plastic bins for under optical table arrived at SLAC, need to be picked up from S&R & put in place.
Reflective focusing: Found one remaining through-going crack, requiring a minor modification. Drawings need to be updated. Xometry order to follow. Noshin to test spot size upon arrival.
New MEMS setup at SLAC: Test fit shows MEMS will have to be mounted vertically - need to finalize design for vertical mount pieces. Is there CAD of the fridge? Maybe have to design new optical fiber feedthrough plates. Design of output plate is done + 3D print looks good, but thickness and hole threading needs to be confirmed, followed by Xometry order. Optical path is designed, and parts are ready to be ordered and needs to be documented (link). Kelly to order more 4.6mm mirrors ASAP + controllers. DC cabling to be adapted from FNAL design.
Optical chopping: 3D printed version of reflective focusing done, so measurements of pulse width can be made. Slight malfunctions of laser driver and Moku impeding progress. Noah to help? Ordering a second collimator.
New MEMS setup at Syracuse: No progress due to lack of person-power. Need to see if they have bandwidth to help (Kelly).
Big picture projects
Device paper: Going to have a paper-writing week starting on the 12th.
LTD: Accepted for a talk, need to write slides
Invited seminars: Caltech, Berkeley, and Yale in the fall - need to pick dates that don’t coincide w/ CPAD (Nov 7-10)
6/14/2023
FNAL projects
LOUD operations: Still in downtime, w/ no clear timeline on starting up again. Working on improved cabling (Kelly, Hannah, slides). Would eventually like to improve light leakage by adding more aluminum tape to MEMS box. Both changes require opening fridge, which will be done when it is convenient, and maybe not before the next run.
QUIET: Update on magnetic shielding design/COMSOL? Other tasks: design + order output plate depending on device, order copy of back wall, plan optical path, upgrade component mounting, eventually upgrade to reflective focusing.
MEMS + KID: Dylan, Hannah, and Kelly have determined that a second MEMS unit will fit in LOUD (slides) and have made a task list for what needs to be done (here). Overlap w/ cabling upgrade being handled by Kelly and Hannah. Optical part numbers handed off. Mechanical mounting is waiting for Sukie to show up.
SLAC projects
Reflective focusing: Required modifications to CAD made. Testing the 3D print, doing a design review, make engineering drawings, place Xometry order. Noshin to test spot size upon arrival.
New MEMS setup at SLAC: Worked w/ Betty to ensure MEMS could be mounted vertically, and that optical and electricals cables would fit. Need to finalize design for vertical mount pieces. Design of output plate is done + 3D print looks good, but thickness and hole threading needs to be confirmed. Xometry order once both of the above are done. Optical path is designed, and parts are ready to be ordered and needs to be documented (link). DC cabling to be adapted from FNAL design - need to order a MDM-MDM Constantan cable from Oxford. Kelly to order more 4.6mm mirrors ASAP + controllers.
Optical chopping: 3D printed version of reflective focusing done, so measurements of pulse width can be made. Moku and LED driver debugged, so ready to take the first run of spot size measurements. Ordering a second collimator.
New MEMS setup at Syracuse: No progress due to lack of person-power. Need to see if they have bandwidth to help (Kelly).
Big picture projects
Device paper: Going to have paper-writing sessions tomorrow/Thursday.
LTD: Accepted for a talk, need to write slides
Invited seminars: Caltech (11/13), Berkeley (11/16), and Yale (???) in the fall - need to pick dates that don’t coincide w/ CPAD (Nov 7-10)
6/28/2023
FNAL projects
LOUD operations: Fridge is cooling down! Improved cabling is designed, with a few orders to be pushed through (Dylan, Hannah). Next time fridge is open: install new cabling, improve light leakage by adding more aluminum tape to MEMS box.
QUIET: Magnetic shielding order going in soon. Other tasks: design + order output plate depending on device, order copy of back wall, plan optical path, plan electrical path, upgrade component mounting, eventually upgrade to reflective focusing.
MEMS + KID: Sukie is here! Went over task list yesterday. A small number of remaining orders to go in (Dylan, Hannah, Kelly). Sukie working on the mechanical mounting.
SLAC projects
New MEMS setup at SLAC: Optical path is designed and all parts are ordered (documentation). Electrical path is designed and ordered (also waiting on breakout boards from FNAL) (documentation). Output plate is designed, drawing is done, and order went out. V1 of the mechanical mount pieces done, some small changes needed. Kelly in the process of ordering more 4.6mm mirrors, controllers, and Linux API.
Reflective focusing: Design done, drawings done, order placed. 3D-printed version gives spot sizes of ~30um.
Optical chopping: 3D-printed version of reflective focusing integrated. Issues w/ Moku and driver de-bugged. Need to move from camera to slit + APD. Noshin making new pulse width measurements soon!
New MEMS setup at Syracuse: Noshin to pick this up starting tomorrow! Kelly to send them parts lists for optical and electrical chains (today).
Big picture projects
Device paper: Currently on my plate…
LTD: Accepted for a talk, need to write slides. Want to include:
Invited seminars: Caltech (11/13), Berkeley (10/26), and Yale (???)
7/5/2023
SLAC projects
New MEMS setup at SLAC: Output plate + mounting wall order went out (ship date of 7/14). Mounting plates are waiting on quote from Xometry, but ready to be ordered. Kelly in the process of ordering more 4.6mm mirrors, controllers, and Linux API.
Reflective focusing: Largely done. Noshin to check spot size once copper version arrives (ship date of 7/13).
Optical chopping: Spot size is pretty circular now, and down to ~40um. APD is working after solving alignment issues. Noshin making new pulse width measurements soon!
New MEMS setup at Syracuse: Noshin and Kelly had a brainstorming session about this, going to meet w/ Syracuse tomorrow to make preliminary design decisions (Noshin working on slides for this)
Big picture projects
Device paper: Currently on my plate…
LTD: Accepted for a talk, need to write slides. Want to include:
Invited seminars: Caltech (11/13), Berkeley (10/26), and Yale (???)
FNAL projects
LOUD operations: Fridge is warm again… timeline is at least 3 weeks, likely more. Cabling order status? (Oxford was placed; Oshpark, McMaster, Digikey to be placed ASAP). Will we open fridge? Not clear yet. What to do when fridge is open? Discussion slides
QUIET: Status of magnetic shielding order - going in ASAP. Other tasks: design + order output plate depending on device, order copy of back wall, plan optical path, plan electrical path, upgrade component mounting, eventually upgrade to reflective focusing.
MEMS + KID: Task list runthrough. Light source driver is done. Sukie has access to NX! Part design starting imminently. Does the chiller failure mean we could install this sooner? Discuss on Friday.
7/12/2023
Big picture projects
Device paper: Currently on my plate
LTD: Accepted for a talk, need to write slides. Want to include:
Invited seminars: Caltech (11/13), Berkeley (10/26), and Yale (11/30)
SLAC projects
New MEMS setup at SLAC: Mounting plate order went out, waiting on Nitssia to purchase. Mirrorcle orders were placed - mirrors shipping on 8/2, controllers on 7/19, and software ASAP.
Reflective focusing: Largely done. Noshin to check spot size once copper version arrives (ship date of 7/13).
Optical chopping: Periodic alignment issues slowing things down. New pulse width measurements looking larger than expected - debugging.
New MEMS setup at Syracuse: Overall design largely settled on. We are going to do MEMS housing + internals, and they are going to work on feedthroughs. Next step is to determine where vertical mount plate goes, in order to pass off dimensions to them.
FNAL projects
LOUD operations (Ryan, Hannah): Chiller replaced with a temporary loaner, so the next cooldown is imminent (not opening up), but will be short. Hannah working on MEMS data handling in preparation for upcoming run. Cabling orders (Oshpark, Digikey, McMaster) went sent, but not sure they were placed by FNAL - Hannah following up.
QUIET (Dan): Status of magnetic shielding order - placed, but stuck in FNAL purchasing. Other tasks: design + order output plate depending on device, order copy of back wall, plan optical path, plan electrical path, upgrade component mounting, eventually upgrade to reflective focusing.
MEMS + KID (Sukie, task list): CAD for 3x pieces (C-bracket, bottom MEMS housing wall, output plate) is coming along! Made some comments on design - see speaker notes on this slide. Talking about output plate design for the rest of this meeting.
9/13/2023
FNAL projects
LOUD operations: Installed new vacuum hardware for DC looms. Looms have been delivered but not in hand. Digikey parts delivered, but still waiting on Oshpark (but might be on Ryan’s desk?). Once everything is in hand, will be soldered at FNAL and shipped to SLAC. Talk to Hannah for soldering instructions. LOUD is open and will be for >1 month. But we got lots of awesome data last run that we need to understand… need to decide who looks at it.
QUIET: magnetic shielding arriving in a few weeks. Fridge install happening soon. Critical path is 2nd MXC plate, no person-power available. Other tasks: design + order output plate depending on device, order copy of back wall, plan optical path, plan electrical path, upgrade component mounting, eventually upgrade to reflective focusing (which is ready to go).
MEMS + KID (task list): All the parts are in, except for Xometry. CAD needs to be verified, drawings made, and placed. Teamcenter access is annoying… Hannah to check. Order will be: C-bracket, bottom MEMS housing wall, output plate, plus more KID housings and covers.
SLAC projects
New MEMS setup at SLAC: Everything has come in, everything has been passivated. New mirrors arrived and tested. New controllers still need to be tested.
Reflective focusing: Everything has come in, everything has been passivated. Spot size of 50-60 um has been achieved, as expected.
Optical chopping: Large diameter mirror reduces reflections and refraction - seeing 10us pulse widths! Ordered a smaller mirror to reduce it even further (5-6 us), will be shipped at the end of this week.
New MEMS setup at Syracuse: Met with them yesterday. They will send us housing design, and work on lid design. Noshin to finalize design on our side, to be followed by 3D print. Next meeting in 2 weeks.
Big picture projects
Scanning paper: Noshin to join in and help on this. Otherwise, just needs person-power from Kelly (and Hannah?).
Chopping paper: Noshin to work on this.
Invited seminars: Berkeley (10/26), Caltech (11/13), and Yale (11/30)
Conferences: CPAD - does someone want to submit a MEMS abstract?
10/4/2023
FNAL projects
LOUD operations: Currently warm. Leak in the mix… cooldown TBD, after fixing the leak. Might be able to use modified cabling. Vacuum HW in place, loom in place but need to be soldered (Kelly to check w/ Dylan - will be done at FNAL), and breakout boards (Kelly to talk to Dylan - will be shipped to SLAC and made there). But we got lots of awesome data last run that we need to understand. Everyone interested needs to attend the analysis meetings (9am PT on Mondays). In the future, SLAC could help w/ data-taking too. Qubit going to be flipped over - minor modifications to housing designed, need to be ordered (Hannah).
QUIET: Cooling! Should hit base temp in a few hours!! Magnetic shielding in hand but some pieces need to be remade. Test assembly with 3D-printed replacements happening soon. Design of 2nd MXC plate is done, could go ahead and order it. Other tasks: design + order output plate depending on device, order copy of back wall, plan optical path, plan electrical path, upgrade component mounting, eventually upgrade to reflective focusing (which is ready to go).
MEMS + KID (task list): All the parts are in, except for Xometry. Kelly to check in w/ Hannah on status of CAD (design review followed by 3D print). Order will be: C-bracket, bottom MEMS housing wall, output plate, plus more KID housings and covers (+ qubit housing).
SLAC projects
OLAF: Everything has come in, everything has been passivated. New mirrors arrived and tested. Can do a fit test in the fridge once open (this week). Still unsure what device will be up first.
Optical chopping: 3mm mirror arrived, but not seeing expected reduction in pulse times. Talking w/ Mirrorcle to debug. Also going to move to command line prompts to try and debug. New design for pulsed beam collection into fiber is done! 3D print in progress, and warm test shortly. Ordered in brass if it works, in preparation for a cold test.
New MEMS setup at Syracuse: Met with them last Thursday. New MEMS housing is designed, need to do 3D printed and warm test of optical alignment. Translation plate for their housing still to be designed. Next meeting is next Thursday.
Big picture projects
Scanning paper: Hannah and Noshin to meet today.
Chopping paper: First draft almost done.
Invited seminars: Berkeley (10/26), Caltech (11/13), and Yale (11/30)
Conferences: Noshin to submit a MEMS abstract for CPAD
10/11/2023
FNAL projects
LOUD operations: Currently warm, cooldown TBD. Will likely move to modified cabling: just need to loom to be soldered (in progress at FNAL), and breakout boards (shipped to SLAC, will be soldered and half shipped back). Qubit going to be flipped over: design is done and order is being placed today/soon. Reflective focusing housing pieces shipped from SLAC today, posted parts list on #mems channel and need to buy 2 parts.
QUIET: 3D-printed parts arrived today, test assembly on Friday. Depending on results, will instruct Amuneal on how to make replacement parts. Still need to order copper spacers. Other tasks: design + order output plate depending on device, order copy of back wall, plan optical path, plan electrical path, upgrade component mounting, eventually upgrade to reflective focusing (which is ready to go).
MEMS + KID (task list): Most parts are in. Xometry is/will be ordered (same order as above). Using Fermilab1 for upcoming tests.
SLAC projects
Olaf: All copper parts ready to go. Mechanical fit test looks good. Need to buy a few small parts for optical and electrical paths (Kelly). Seems likely that we’ll do HVeV devices first (but only after chopping test).
Optical chopping: Going to move to command line prompts to debug the 3mm mirror speed. New design for pulsed beam collection into fiber is 3D printed and being debugged.
New MEMS setup at Syracuse: Meeting with them tomorrow. New MEMS housing is designed and 3D printed. Minor modifications required, followed by warm test of optical alignment. Output plate is designed, needs to be printed. Should do a test fit with fiber + DC loom in 5” can to make sure everything fits.
Big picture projects
Scanning paper: On hold while Noshin applies for NSF. Hannah and Noshin to keep editing. Kelly should do a round of edits too.
Chopping paper: All current data is in there. Still waiting on final data from warm and cold tests. On hold while Noshin applies for NSF.
Invited seminars: Berkeley (10/26), Caltech (11/13), and Yale (11/30)
Conferences: Noshin submitted a MEMS abstract for CPAD!
11/1/2023
FNAL projects
LOUD operations: Currently warm, cooldown TBD. Will likely move to modified cabling: Kelly to check in about status of soldered cable at FNAL, breakout boards to be soldered this week and sent back w/ FNAL folks at CPAD. Will also send back 2 more passivated copies of the reflective focusing housing. Qubit going to be flipped over - Xometry order has shipped.
Qubit analysis: Giana and Noshin ramping up - next step is to get accounts on LOUD.
QUIET: Kelly to check on status. Other tasks: design + order output plate depending on device, order copy of back wall, plan optical path, plan electrical path, upgrade component mounting, eventually upgrade to reflective focusing (which is ready to go).
MEMS + KID (task list): Xometry order shipped - anything else? Kelly check w/ Dylan (cc Hannah).
SLAC projects
Olaf: Planning for a fiber loopback test in upcoming (short) run to measure optical attenuation. Will be followed by cold test for chopping after power outage 11/13-17. Still need electrical cable and light collection system (see below). First devices will be HVeV.
Optical chopping: Everything was disassembled for floor work in B33. Reassembling now. Warm test of light collection into fiber is updated, needs to be tested. Going to move to command line prompts to debug the 3mm mirror speed.
New MEMS setup at Syracuse: Next meeting unscheduled, but Britton is at SLAC for the next 3 weeks. MEMS housing design is progressing - most parts are 3D-printed, and only small changes to make. Hopefully doing a design review w/ Britton later this week. Followed by warm test of optical alignment w/ 3D print, as well as test fit with fiber + DC loom in 5” can.
Big picture projects
Scanning paper: Kelly to do a round of edits ASAP.
Chopping paper: Advanced draft. Waiting on final data from warm and cold tests.
Invited seminars: Caltech (11/13), and Yale (11/30)
Conferences: Noshin presenting at CPAD next week
11/15/2023
FNAL projects
LOUD operations: Currently warm, cooldown TBD. Breakout boards, copper reflective focusing, and Xometry parts are at FNAL. Buying new cables from StarCryo. Qubit may or may not be flipped over for next data run. Need to order optical parts for reflective focusing, but this can wait for a bit. For sapphire qubit: need to decide what the magnetic shielding looks like before anything else.
Qubit analysis: Giana should have an account on LOUD. Need to submit a ticket for Noshin. Then need to meet with.. Ryan? Hannah? Post notes on this to MEMS channel.
QUIET: Open tasks: design + order output plate depending on device, order copy of back wall (need to figure out which one), order optical path, plan electrical path.
MEMS + KID (task list): Everything in hand, to be installed for next run (whenever that is). A test install would be useful.
SLAC projects
Olaf: Did a fiber loopback test and were unable to see the light at the other end :( Going to to try again once we have access to the fridge again (next week). Will be followed by cold test for chopping after power outage 11/13-17. Still need electrical cable and light collection system (see below). First devices will be HVeV.
Optical chopping: Warm test of light collection into fiber is updated, needs to be tested. Going to move to command line prompts to debug the 3mm mirror speed.
New MEMS setup at Syracuse: Did a design review, minor changes. Printing pieces now. Followed by warm test of optical alignment w/ 3D print, as well as test fit with fiber + DC loom in 5” can.
Big picture projects
Scanning paper: Kelly to do a round of edits ASAP.
Chopping paper: Advanced draft. Waiting on final data from warm and cold tests.
Invited seminars: Yale (11/30)
Use MEMS to study phonon response of SNSPDs? (Maria’s group at Caltech)
1/10/2024
FNAL projects
LOUD operations: LOUD is not operational for science right now, but maybe in Feb. All hardware in hand for 2nd MEMS unit in LOUD w/ refractive focusing. StarCryo cables have been purchased and are in fab. Need to order optical parts for reflective focusing, but this can wait for a bit.
Qubit analysis: Accounts are almost there for both Giana and Noshin. Meeting w/ Ryan tomorrow (Thursday) to kick off analysis tasks.
QUIET: Open tasks: design + order output plate depending on device, order copy of back wall (need to figure out which one), order optical path, plan electrical path.
SLAC projects
OLAF: Electrical cables have been ordered. First devices will be HVeV on undetermined substrate.
Optical chopping: Goal is to a cold demonstration of the optical chopping unit.
New MEMS setup at Syracuse: Need to do warm test of optical alignment w/ 3D print, as well as test fit with fiber + DC loom in 5” can. Remaining CAD: filter attachment, wiring baffle.
Big picture projects
Scanning paper: Noshin did a round of edits over the break, will hand off to Kelly/Noah/Dan ASAP (hopefully end of this week ish). Simon to help with literature review - Kelly to send a starting list ASAP.
Chopping paper: Advanced draft. Waiting on final data from warm and cold tests.
SLAC received funding to work on THz expansion of MEMS system
1/17/2024
FNAL projects
LOUD operations: LOUD is not operational for science right now, but maybe in mid-late Feb. All hardware in hand for 2nd MEMS unit in LOUD w/ refractive focusing. StarCryo cables have been purchased and are in fab. Need to order optical parts for reflective focusing, but this can wait for a bit.
Qubit analysis: Accounts are (almost) settled, next step is setting up VNC viewer. Physics discussions have been happening w/ Ryan. Next meeting is tomorrow to talk about code examples and data access.
QUIET: Open tasks: design + order output plate depending on device, order copy of back wall (need to figure out which one), order optical path, plan electrical path.
SLAC projects
OLAF: Electrical cables have been ordered. First devices will be HVeV on undetermined substrate.
Optical chopping: Goal is to a cold demonstration of the optical chopping unit.
New MEMS setup at Syracuse: Warm test of optical alignment w/ 3D print: everything assembled and MEMS mirror installed, optical test soon! Next is test fit with fiber + DC loom in 5” can (Nick). Remaining CAD: filter attachment, wiring baffle (Noshin).
Big picture projects
Scanning paper: Noshin did a round of edits over the break, has handed off to Kelly/Noah/Dan - now on our plate to do a round of edits. Simon to help with literature review - Kelly to send a starting list ASAP.
Chopping paper: Advanced draft. Waiting on final data from warm and cold tests.
1/24/2024
FNAL projects
LOUD operations: LOUD is not operational for science right now, but maybe in mid/late Feb. All hardware in hand for 2nd MEMS unit in LOUD w/ refractive focusing. StarCryo cables have been purchased and are in fab. Need to order optical parts for reflective focusing, but this can wait for a bit.
Qubit analysis: Launched analysis tasks last Thursday - Kelly to check late this week. Accounts are (almost) settled, next step is setting up VNC viewer.
QUIET: Open tasks: design + order output plate depending on device, order copy of back wall (need to figure out which one), order optical path, plan electrical path.
SLAC projects
OLAF: Electrical cables have been ordered. First devices will be HVeV on undetermined substrate.
Optical chopping: Goal is to a cold demonstration of the optical chopping unit.
New MEMS setup at Syracuse: Warm test of optical alignment w/ 3D print was successful! A few minor changes to make, and one major one.Test fit with fiber + DC loom in 5” can will happen starting tomorrow. Wiring baffle design and printed, to be tested. Have to adjust focal length. Meeting w/ Syracuse on Friday.
Big picture projects
Scanning paper: Hannah to send some figures, Noshin making edits. To be handed off to Kelly/Dan on Thursday/Friday. Simon to help with literature review - Kelly to send a starting list ASAP.
Chopping paper: Advanced draft. Noah to help. Waiting on final data from warm and cold tests.
1/31/2024
FNAL projects
LOUD operations: LOUD is not operational for science right now, up time is TBD. All hardware in hand for 2nd MEMS unit in LOUD w/ refractive focusing. StarCryo cables have likely been shipped. Need to order optical parts for reflective focusing, but this can wait for a bit.
Qubit analysis: Accounts are sorted, VNC is sorted. Still working through code access (ssh keys). Ryan talking to Giana today and to Noshin next week.
QUIET: Open tasks: design + order output plate depending on device, order copy of back wall (need to figure out which one), order optical path, plan electrical path.
SLAC projects
Optical chopping: Goal is to a cold demonstration of the optical chopping unit.
New MEMS setup at Syracuse: Fit test done! Minor changes, models updated. Going to need 1 more 3D print to ensure the alignment is good. Syracuse is going to send us a can painted black, and also start ro order optical and electrical parts.
Big picture projects
Scanning paper: Hannah to send some figures, Noshin making edits. Noshin and Dan to do intensive writing session while Noshin is at FNAL. Simon helping with literature review.
Chopping paper: Advanced draft. Noah to help. Waiting on final data from warm and cold tests.
2/21/2024
FNAL projects
LOUD operations: LOUD is not operational for science right now, up time is soonish? All hardware in hand for 2nd MEMS unit in LOUD w/ refractive focusing. StarCryo cables have likely been shipped. Need to order optical parts for reflective focusing, but this can wait for a bit.
Qubit analysis: Working through code access (ssh keys). Kelly to ping Giana.
QUIET: Open tasks: design + order output plate depending on device, order copy of back wall (need to figure out which one), order optical path, plan electrical path.
SLAC projects
Optical chopping: Goal is to a cold demonstration of the optical chopping unit.
New MEMS setup at Syracuse: A few minor changes to make to CAD based on previous fit test. Going to need 1 more 3D print to ensure the alignment is good (being done today). Syracuse is going to send us a can painted black (Noshin to follow up).
Big picture projects
Scanning paper: Meeting about scanning paper tomorrow (Thursday). Dan, Noshin, Kelly, Simon, Hannah.
Chopping paper: Advanced draft sent to Noah. Waiting on final data from warm and cold tests.
3/6/2024
FNAL projects
LOUD operations: LOUD cooldown starting imminently - back up for science science. All hardware in hand for 2nd MEMS unit in LOUD w/ refractive focusing. Need to order optical parts for reflective focusing, but this can wait for a bit.
Qubit analysis: Working through code access (ssh keys). Kelly and Ryan in a tight loop w/ Giana.
QUIET: Open tasks: design + order output plate depending on device, order copy of back wall (need to figure out which one), order optical path, plan electrical path.
SLAC projects
Optical chopping: Goal is to a cold demonstration of the optical chopping unit.
New MEMS setup at Syracuse: Several design changes implemented. New version was printed + assembled and alignment looks great. Test fit w/ coated can from Syracuse mostly successful. Still two major concerns: space for fiber connector, and space for RF SMA connectors. Seems like fiber concern will be ok with sufficient tilt of collimator. Once fully figured out, need to schedule a design review. Also need to ship their can back.
Big picture projects
Scanning paper: Meeting about scanning paper tomorrow (Thursday, 1pm PT). Dan, Noshin, Kelly, Simon, Hannah (at APS this week).
Chopping paper: Noah sent comments back - Noshin to make changes. Warm tests can happen soon, and then waiting on cold test data. Also need to take nice photos.
Future: Need to think about what devices to run when.
3/13/2024
FNAL projects
LOUD operations: LOUD is/was cold! Mix loss issue might be solved - still under investigation.
Qubit analysis: In principle, logistics are worked out, and now on to analysis!
QUIET: Open tasks: design + order output plate depending on device, order copy of back wall (need to figure out which one), order optical path, plan electrical path.
SLAC projects
Optical chopping: Goal is to a cold demonstration of the optical chopping unit.
New MEMS setup at Syracuse: Meeting with them tomorrow to do final design review. Small CAD changes have been implemented. Looks like the space for the fiber will be fine. RF SMA connectors will be tested tomorrow morning. Their can was shipped back. So close to ordering copper parts! Need to confirm how many copies.
Big picture projects
Scanning paper: Standing meeting on Thursday at 11am PT: Dan, Lauren, Noshin, Kelly, Simon, Hannah.
Chopping paper: Noah sent comments back - Noshin to make changes. Warm tests can happen soon, and then waiting on cold test data. Also need to take nice photos. Hannah to send plots of previous spot size measurements. Dylan/Kester will try to find a refractive focuser at FNAL to send to SLAC (635nm, 15cm is the correct version)
Future: Need to think about what devices to run when.
3/27/2024
FNAL projects
LOUD operations: LOUD is ~fixed. Opening today. MEMS cabling (new DB25) to be be installed.
Qubit analysis: Hopefully meeting w/ Giana next week.
QUIET: Open tasks: design + order output plate depending on device, order copy of back wall (need to figure out which one), order optical path, plan electrical path.
SLAC projects
Optical chopping: Goal is to a cold demonstration of the optical chopping unit.
New MEMS setup at Syracuse: Meeting with them on Friday. Talking about final design changes, Xometry quote, how many copies to order, and electrical/optical parts lists.
Big picture projects
Scanning paper: Standing meeting on Thursdays at 11am PT.
Chopping paper: Warm tests can happen soon, and then waiting on cold test data. Also need to take nice photos during the final installation.
4/3/2024
FNAL projects
LOUD operations: LOUD is open! Cooldown is maybe end of this month.
Qubit analysis: Ryan + Kelly meeting w/ Giana tomorrow.
QUIET: SLAC would like a copy of the 2nd MXC plate when it is ready. RF loom being installed later in the month. Open tasks: design + order output plate depending on device, order copy of back wall (need to figure out which one), order optical path, plan electrical path.
SLAC MEMS hardware projects
Optical chopping:
New MEMS setup at Syracuse: Preparing Xometry order now! Order going in ASAP.
SLAC MEMS science projects
MEMS + HVeV: Kelly discussed the types of measurements to make w/ Matt Wilson. We need to determine which device to use, and the timeline of when we could run it. Hopefully Pam would help with this.
MEMS + KIDs: FNAL (Stella) to do device geometry and G4CMP/QDR simulation, SLAC (Zoe + Hannah + Noshin + summer student) to couple KID device to MEMS and operate.
Big picture projects
Scanning paper: Standing meeting on Thursdays at 11am PT.
Chopping paper: Warm tests can happen soon, and then waiting on cold test data. Also need to take nice photos during the final installation. Hopefully happening in 2 weeks when Noshin comes back. Will work on text in the meantime.
4/17/2024
FNAL projects
LOUD operations: LOUD is open! Cooldown is maybe end of this month.
Qubit analysis: Ryan + Kelly should meet with Giana… Friday?
QUIET: SLAC would like a copy of the 2nd MXC plate when it is ready. RF loom being installed later in the month. Open tasks: design + order output plate depending on device, order copy of back wall (need to figure out which one), order optical path, plan electrical path.
SLAC MEMS hardware projects
Optical chopping: Noshin out this week.
New MEMS setup at Syracuse: Preparing engineering drawings now! Order (MEMS-in-a-can) going in ASAP. Lid order might need one more meeting w/ Syracuse (Kelly to email)
SLAC MEMS science projects
MEMS + HVeV: Kelly discussed the types of measurements to make w/ Matt Wilson. We need to determine which device to use, and the timeline of when we could run it. Hopefully Pam would help with this.
MEMS + KIDs: FNAL (Stella) to do device geometry and G4CMP/QDR simulation, SLAC (Zoe + Hannah + Noshin + summer student) to couple KID device to MEMS and operate.
Big picture projects
Scanning paper: Standing meeting on Thursdays at 11am PT.
Chopping paper: Warm tests can happen soon, and then waiting on cold test data. Also need to take nice photos during the final installation. Hopefully happening in 1 week when Noshin comes back. Will work on text in the meantime.
5/8/2024
No meeting - just slide updates
SLAC MEMS hardware projects
Optical chopping:
New MEMS setup at Syracuse: Main Xometry went out. Waiting on drawing changes from Syracuse fir lid/collar order. ThorLabs (for optics), McMaster and Misumi (for screws), Digikey (for connectors), and Oshpark (for boards) orders going out ASAP. Next up: documentation, testing drivers, and packaging up software.
SLAC MEMS science projects
MEMS + HVeV: This is waiting on devices. Plan is to run a full tower next time and then select best device for MEMS for following run.
MEMS + KIDs: Summer students will be Elizabeth and Renee. Output plate and mounting bracket being designed by Noshin. Still to do:
Big picture projects
Scanning paper: On the arXiv. Still need to submit to SPIE, which is more time-intensive than expected.
Chopping paper: Weekly meetings: 10am PT on Thursdays. General outline and list of all figures done. For next week:
5/22/2024
FNAL projects
LOUD operations: LOUD is warm but “fixed” (~20mK). Science in future, but not until ~June.
Qubit analysis: Giana is busy right now.
QUIET: SLAC would like a copy of the 2nd MXC plate when it is ready. New RF loom received, installed, and tested warm. Open tasks: design + order output plate depending on device, order copy of back wall (need to figure out which one), order optical path, plan electrical path.
SLAC MEMS hardware projects
Optical chopping:
New MEMS setup at Syracuse: Placed: all Xometry orders (June 6 arrival), ThorLabs, McMaster and Misumi, Digikey, and Oshpark. Next up: documentation, testing drivers, make boards + cables, and packaging up software.
SLAC MEMS science projects
MEMS + HVeV: Run 11 has full HVeV tower with several options - select best device for MEMS for future run.
MEMS + KIDs: Output plate designed and ordered. Still to do:
Big picture projects
Scanning paper: Still need to submit to SPIE, which is more time-intensive than expected (goal is tomorrow)
Chopping paper: Weekly meetings: 10am PT on Thursdays. Advanced outline done, draft of many figures done. For tomorrow:
List of longer term MEMS upgrades:
Suggestions welcome!