Tasks for post observation

	B	C	D	E	F	G	H	I	J	K	L	M	N	O	P
1	KAGRA task list for post observation 2020/4/21~
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3	Task name	description	Using IFO (Yes/Partial/No)	1:low,not remotable, 2 low,remotable, 3 high,not remotable, 4high,remotable, 5 maintenance	term	assigned to	Priority for O4 preparation	Priority for observation paper	Priority for VIS paper	Priority for IOO paper	Priority for PEM paper	Priority for commissioning paper	working week	Scheduled Date	Comments

4	Feasibility of locking DRFPMI		Yes	2	3weeks	Nakano	5	2	1		1	3
5	Scattered light (high frequency)	Hammering test to IMM area, PR area, SR area(temprary), OMC area and EYA are were completed. C chamber, SRM, IA chambers is not completed.	Yes	1	1day	Yokozawa	3	1	1		1	2			For noise budget and understanding scattered light for O4
6	Scattered light (low frequency by swinging)	Up converted scattering noise. Low frequency with large RMS makes upconverted scattered noise. We did'nt investigate yet	Yes	2	3days	Akutsu	3	1	1			2
7	OMC chamber vibration RMS measurement	Requested from Aso-san. To investigate the scattered noise inside the OMC chamber, PEM team will measure the vibration with various place.	Yes	1	1day	Yokozawa	2	3	0		1	4			For noise budget and understanding scattered light for O4
8	Fill the eigenfrequencies for Type-A suspension	https://gwdoc.icrr.u-tokyo.ac.jp/DocDB/0111/T1911116/001/20191213tyamada_sumconCRYp20161025.pdf Merit : Identification of the line noise sources for the sensitivity of this observation run. (We can make following noise investigation https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=11514) Demerit : Those frequency may change in the future observation.	Yes	4?		Suggested by Yokozawa, but I want to ask someone to manage it. If nobody hand up, please delete it					0
9	Calibration		Yes	done	3days	Yamamoto, Darkhan	1	5	3		3	3	4/21~	4/21-25	Remote work can be done with 1person at the control room.
10	LSC and ASC sensing matrix		Yes	4	2days	Nakano, Ushiba					0		6/8~
11	MICH contrast defect with MICH locked and FPMI locked		Yes	4	1day	Nakano					0		6/8~
12	Noise budget			3		Shoda					3
13	Line noise investigation for noise budget	Identify the line noises	No								1
14	intensity noise, frequency noise, beam jitter projection measurement			4		Kokeyayama, Miyakawa				5	0		6/8~
15	Type Bp measurement with some restricted IFO		Partial	1	~2days	Fabian					0				This is not a priority for the paper we are currently working on.
16	BS measurement with some restricted IFO like simple Michelson		Partial	3	~2days	Fabian			1		0				This is not a priority for the paper we are currently working on.
17	Measuremet of quality factors and damping recovery times using the BS suspension.	I'm guessing it might take 3 days but preparaion is sitll required. It might take a shorter time.	No	3	~3 days	Fabian	0	0	5		0	0	5/19~	5/21,22, 26-28
18	Type A measurement with some restricted IFO like Xarm		Partial	1	~2days	Lucia					0		5/19~	5/28
19	IP control upgrade (sensor correction, sensor blending)	No sensor correction is implemented in Type-B, which might be required for SRC lock. Also we would like to try low-frequency sensor blending to reduce the micro-seismic motion towards O4.	No	3	~2days/sus/person	Shoda, Lucia?, (Terrence if it is after late May)	5	0	2		0	2			Controls for SRs might be essential for DRFPMI locking. It would be better to implement the sensor correction in BS and SRs at least before starting the DRFPMI lock trial.
20	PEM injections	various acoustic injection test for writing the PEM paper	Yes	4 and 3	~2day	Yokozawa, Wasshimi	2	2	1		5	2	6/1~	6/5	Acoustic injection to interesting places were completed. Remaining issue : Acoustic injection to all place for evaluating coupling function(LIGO rule is less than 10% for DARM displacement). Band limited acoustic injection to interesting places to evaluate frequency converted noise. Magnetic field injection(Lower motivation, but if required)
21	Mode content of AS (OMC cavity scan)		Yes	4	1day	Aso, Kokeyama	4	3	1		1	4	6/8~
22	Finesse/loss measurement for X/Y arm	Installation of polarization optics to TRX and TRY necessary. Polarization effects should be correctly taken into account.	Yes	done	1day						0		4/21~
23	116.5 Hz, 127.7Hz and 256 Hz noise investigation	Those noises have coherence with ITMX/ITMY MN/IM PS signal, magnetometers. Unknown noise but large noise. PEM team want to investigate it before finishing O3	Yes	1	1 or 2 day	Yokozawa	3	4	1		1	3			Noise budget and line noise investigation. If you think we don't need to understand all line noise, please ignore it.
24	Test of additional filters for the LVDT combiner	Check the performance of additional filters in the LVDT combiner for the BF damper using a Type-A tower.	No	1	1 day	Takahashi, Miyo	3				0
25	Make cable connection diagram (IOO, ALS, etc)	Making cable connection diagram for O3 (Miyo-san generated for Suspension)		1							0
26	Lock acquisition related	Take the timeseries of lock acquisition, measure the average duration and probability of PRMI lock acquisition, investigation of the 3f signal pollution due to the DARM/CARM signal	Partial	3	2 days	Nakano		3				5
27	Fringe speed measurement	Measure the fringe speed. Just take the error signal timeseries of free swinging PRMI, arm cavities, and IMC.	Partial	4	1day	Nakano	1					5	6/8~		We might need perform this measurement in stormy day and quiet day.
28	IFO characterization	Round trip loss of arm cavity, sideband PRG, mode healing effect	Partial	3	1 week	Nakano	5	3				5	4/21~	6/5	Finesse, PRG measurement
29	Noise budget of VIS local control	The noise budget of the local damping loop. Especially sensing noise of OpLevs, OSEMs, LVDTs, and photosensors	No	4	3 day	Ushiba/Oshino			5			5	6/1~	5/13-15, 6/1,4
30	OMC PD ADC noise measurement	Disconnect the OMC PD from ADC and measure the ADC noise for OMC PC. If we can understand well, we can subract 60Hz noise by offline subtraction	No	1 or 3	1day	Yokozawa	2	3	1		1	3			For offline subtraction. If you don't need to do offline subtraction, please ignore it.
31	GRY investigation		No	5	1day	Nakano?
32	Test of ACC	Evaluate the modified ACC with LVDT sensor.	No	3	2 days	Takahashi	4
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34	SRM/2/3 suspension update	control scheme update	No	3	1week	Shoda+VIS	5	1	1				6/15~
35	PD replacement in OMC	change one of PD for OMC	No	3	2weeks	OO	5
36	FFU operation and temp control	reclean and keep temperature	No	3		PEM	5
37	Spot adjustment on MCo		No	3	1week	IO	3
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