|Task In Progress Under U.S.-IPP Collaboration on Wendelstein 7-X|
|Task Agreement Status|
|Task Number||Short Title||U.S. Lead||IPP Lead||Near-term plans (abridged)|
See full task agreement for details
|2017-7||Coherence Imaging Spectroscopy||D. Ennis|
|R. König||• Specification and procurement of system components|
• Assembly and installation
• Scientific exploitation in OP1.2b
|2017-6||X-ray Imaging Crystal Spectrometer||N. Pablant|
|A. Langenberg||• Installation of Ar16+/Fe24+ XICS channel|
• Complete data acquisition and control system
• Complete automatic XICS analysis system
• XICS wavelength calibration (WC) design and safety review
• Place orders for WC X-Ray tube and vacuum hardware
|2017-4||OP2 Endoscopes||G. Wurden,|
|J. Fellinger||• Develop and issue contracts for design, fabrication, and assembly (IPP)|
• Provide financial, material, and engineering resources (IPP)
• Provide support as needed, including , assistance in requirement definition and design, off-site vendor interactions, and supervision of assembly and IPP-in-house testing of the OP2 endoscopes. (LANL)
|2017-3||PMI and Impurity Sourcing||O. Schmitz,|
Univ. of Wisconsin
|• Final setup and test of laser blow-off (LBO) system.|
• Finalize analysis of limiter surfaces and in-situ spectroscopy
• Support setup of ORNL & LANL diagnostics for observation of divertor targets, first wall and scraper element
• Plan and conduct experiment on “Impurity transport through the island domain at W7-X”
|2017-2||Core Transport with XICS||N. Pablant|
|R. Wolf||• Conduct experimental investigations of impurity transport using the XICS and HR-XIS diagnostics.|
• Investigate of the role of the radial electric field in plasma performance.
• Coordinate comparisons of neoclassical predictions with experimental measurements
• Conduct experimental comparisons of radial electric field behaviour between W7-X and LHD.
• Develop a power-balance analysis package for transport studies: STELLTRAN-pb.
• Mentor Ph.D. student working on impurity transport in W7-X.
|2017-1||Neutral Beams and Energetic Particles||S. Lazerson|
|R. Wolf||• Develop prototype thin-film Faraday cup fast ion loss detectors.|
• Numerical studies of neutral beam deposition and fast ion losses
• Participate in W7-X OP1.2 experiments characterizing the neutral beam and characterizing energetic particle losses generated by ion-cyclotron resonance heating on W7-X.
|2016-1||Remote Collaboration Technology||H. Neilson|
|• Complete implementation of 10 Gb/sec internet bandwidth upgrade.|
• Complete implementation of remote access to the data monitor, data browser, logbook and component logs, etc.
• Maintenance and support of capabilities; user support.
• Develop capability for cloud-based file sharing
|2015-10||Quantitative Edge Spectroscopy||O. Schmitz, T. Barbui|
|• Finalize implementation of spectroscopy observation for OP1.2 and operate.|
• Finalize analysis of OP1.1 HeLRS measurements; continue with development of Ne line ratio model. Prepare analysis suite for general use
• Benchmark HeCRM and NeCRM in high density conditions of island divertor
• Make neon CRM ready for use (collaboration with Auburn U. and Johns-Hopkins U.
• Operate ORNL filterscopes during OP1.2.a and implement data stream into W7-X data archive, including calibration
• Support preparation of LANL visible camera for scraper observation.
|2015-9||Helium Exhaust||O. Schmitz, Th. Kremeyer|
|U. Wenzel||• Finalize calibration of Penning Gauge (PG) system for spectrum analysis and calculation of fractional neutral pressures|
• Full commissioning of PG vacuum system and PG observation as implemented at W7-X
• Implement multi-reservoir, multi-species particle balance based on experimental data and also in EMC3-EIRENE for analysis of experimental data
• Use PG system for neutral gas analysis during OP1.2 campaign, conduct experiment on He exhaust and particle balance with the island divertor
|2015-8||X-ray imaging crystal spectrometer (Auburn)||D. Maurer|
|A. Langenberg||• Operation of the XICS, inc collaboration with PPPL.|
• Participation in impurity transport studies during OP 1.2 (student thesis data)
• Design of in-situ x-ray calibration system for installation during OP 1.2
|2015-7||V3FIT equilibrium reconstruction and EMC3 interface development||D. Maurer|
|J. Geiger||• Maintain V3FIT data retrieval routines for new storage|
• Implement data retrieval routines into V3FIT for diagnostics as they are
• Implement interface between reconstructed equilibrium and EMC3-Eirene
• Participate in experiments and to study and time-evolution of bootstrap and ECCD currents.
|2015-6||EMC3-Eirene Modeling||O. Schmitz, H. Frerichs|
|Y. Feng||• Continue assessment of impurity transport and radiation cooling during OP1.2|
• Prepare and execute experiments on “Assessment of Radiation”, which includes radiative edge cooling and active divertor heat load control by radiation cooling
• Publish second paper about 3-D SOL transport with focus on narrow scrape-off layer feature and up-downstream scaling trends
• Prepare and present a poster on ISHW in Kyoto, Japan on “Radiative edge cooling in Island Divertor Scenarios at Wendelstein 7-X”
• Explore impact of radiation cooling on detachment stability (H. Frerichs)
|2015-5||Heavy Ion Beam Probe||D. Demers,|
|O. Grulke||• Modeling to develop preliminary system specifications.|
• Initiate conceptual layout of main components.
• Review estimates of radiative power and particle loading, and impact on performance. Update using in-situ measurements if warranted.
• Review the system hardware and its specifications in relation to use on W7-X.
• Outline engineering-scope, installation-logistics, and project costs
• Perform project (and engineering) review to enable DOE, and IPP planning
|2015-4||Gas Puff Imaging||J. Terry,|
|O. Grulke||• Obtain and analyze high-speed images of W7-X plasmas during OP1.2.|
• Obtain a view of a gas inlet system and to specify the port location for such a GPI view. Design re-entrant hardware for housing the optics for such a view.
• Model emission from the gas-puff of reasonable flow rate, based upon simulations of standard W7-X boundary plasmas.
• Propose a system design for GPI for; carry out a Conceptual Design Review (CDR) with the W7-X.
• Revise designs based on the CDR.
|2015-3||Phase Contrast Imaging||M. Porkolab, E. Edlund,|
|O. Grulke||• Complete diagnostic commissioning in preparation for first experiments.|
• Complete final testing and alignment prior to experiments.
• Operate the PCI diagnostic during the OP1.2a experimental campaign. Shake down possible operational difficulties and resolve unanticipated problems during plasma operation as necessary.
• Continue data analysis. Prepare conference presentations and manuscript writing as appropriate and prepare scientific proposals for the OP1.2b campaign.
• Operate the PCI diagnostic during the OP1.2b experimental campaign and continue with scientific activities described above.
|2015-2||Long-Pulse PMI Science||D. Hillis, J. Harris,|
|T. S. Pedersen||1. Operate and support the expanded ORNL filterscope system|
2. Coordinate the TDU scraper experiments and analysis according to plans laid out by the multi-institutional team.
3. Collaborate in the analysis of material loss and migration from the coated scraper tiles.
4. Conduct exploratory studies of the response of the edge plasma to pellet injection.
|2015-1||High Heat Flux Scraper Element||A. Lumsdaine,|
|J. Boscary||• Simulation of heat loads on TDU-SE in support of TDU-SE testing in OP1.2.|
• Thermo-mechanical modelling in support of TUD SE testing.
• Testing of graphite foam in linear plasma facility
• Testing of graphite foam sample in W7-X
|2014-6||Pellet Injection Program||L. Baylor, J. Harris,|
|J. Baldzuhn||• Participate in pellet fueling experiments using the U.S. mass detectors and existing IPP injector system during OP1.2. (ORNL, IPP)|
• Develop a conceptual design for a continuous pellet fueling system (IPP, ORNL, PPPL, NIFS).
• Successful joint conceptual design review.
|2014-5||Infrared Imaging||G. Wurden,|
|T. S. Pedersen||• Design, construct, install mirror endoscope system to view the upper scraper element|
• Conduct FDR, Order parts and fabrication services; complete assembly and integration.
• Install upper scraper viewing system after OP1.2a.
• Continue development of documentation packages.
• Continue real-time image data analysis software development.
• Image TDU divertors and scraper element during the W7 X OP1.2 campaign.
|2014-4||Magnetics and Control||S. Lazerson, D. Gates,|
|T. S. Pedersen||• Document post-OP1.1 work.
• Evaluate effects and ramifications of measured error field.
• Participate in e-beam mapping experiments.
• OP1.2 experiments: plasma response and divertor heat-load balancing in response to trim coils.
|2014-3||On-Site U.S. W7-X Program Coordination at IPP||H. Neilson,|
|• Glen Wurden, on-site through Sept. 2018|
• Jeffrey Harris, on-site from Oct. through Dec. 2017
• Samuel Lazerson, on-site through June 2019
• Novimir Pablant, on-site through July 2019
|2014-2||X-ray Imaging Crystal Spectrometer||N. Pablant|
|A. Langenberg||• Detector upgrades were completed in FY-2017||Rev. 7|
|2014-1||TDU Scraper Element||H. Neilson, PPPL|
J. Harris, ORNL
|J. Fellinger||• Equipment and documentation delveries were completed in January 2017||Rev. 8|
|12 Sep 2017|