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ISTP (and other…) Update

NSTX-U. Supported by. ISTP (and other…) Update. Stefan Gerhardt. Coll of Wm & Mary Columbia U CompX General Atomics FIU INL Johns Hopkins U LANL LLNL Lodestar MIT Lehigh U Nova Photonics ORNL PPPL Princeton U Purdue U SNL Think Tank, Inc. UC Davis UC Irvine UCLA UCSD

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ISTP (and other…) Update

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  1. NSTX-U Supported by ISTP (and other…) Update Stefan Gerhardt Coll of Wm & Mary Columbia U CompX General Atomics FIU INL Johns Hopkins U LANL LLNL Lodestar MIT Lehigh U Nova Photonics ORNL PPPL Princeton U Purdue U SNL Think Tank, Inc. UC Davis UC Irvine UCLA UCSD U Colorado U Illinois U Maryland U Rochester U Tennessee U Tulsa U Washington U Wisconsin X Science LLC Culham Sci Ctr York U Chubu U Fukui U Hiroshima U Hyogo U Kyoto U Kyushu U Kyushu Tokai U NIFS Niigata U U Tokyo JAEA Inst for Nucl Res, Kiev Ioffe Inst TRINITI Chonbuk Natl U NFRI KAIST POSTECH Seoul Natl U ASIPP CIEMAT FOM Inst DIFFER ENEA, Frascati CEA, Cadarache IPP, Jülich IPP, Garching ASCR, Czech Rep NSTX-U Monday Physics Meeting Feb. 20, 2015 B318

  2. CD-4 Requirements • 50 kA plasma • Penultimate activity is ISTP-001, “NSTX-U Coil Energization Tests” • Then go to XMP-100 • 40 kV beam into the armor • Handled via startup and conditioning beam procedures

  3. Solid Progress Being Made on Both Fronts • ISTP-001 • Started last Thursday • Have run all coils at 10% and 50% of their CD-4 limits • Have run most coils at 100% of their CD-4 limits • Includes 65 kA TF. • Demonstrated I^2t, overcurrent, overtime trips of various types. • Using these shots to correct many many magnetics issues. • Final commissioning of the gas delivery/injection system is maybe the final hurdle at this point. • Significant progress made over the weekend, but still at least a few full shifts of work • NB #2 source B is now HV conditioning towards to 40 kV beam target. • Some setbacks on 2A and 2C.

  4. What about after CD-4?That is, after BOTH the Plasma and NBI milestones are met. Apr. 2015 May 2015 June 2015 July 2015 • Commit resources to completing key MPTS tasks before the bakeout…target 1 week. • Spend most of May on the bakeout. • ISTP, MPTS R&R, commissioning in later May and June. • Research ops in July and onward. • Many background engineering tasks during this time. • More dummy load testing. • Gas injection systems • Control system work Bakeout ISTP Commissioning Research Plasma Operation CD4 MPTS R&R pre-bake-out MPTS

  5. You may ask… Apr. 2015 May 2015 June 2015 July 2015 • What about access to the NTC? • Very restricted access during bakeout • Very restricted access during MPTS R&R, or other times when the laser is firing. • 2nd shift access during this and the next ISTP. • Weekend access. • Sporadic first shift access…coordinate with Al is your best bet. • Opportunities arise if you are ready to take advantage of them • Maintenance weeks • What does it take to get work done? • Most tasks can be done on a D-Site work permit. • Many tasks can be done under the “reinstall what was taken off” work package. • Only major new work requires a “blue folder”. • Plan your work a few days in advance ( and ASAP)…it can take a few days to get work permits approved. • Don McBride can help with the permits and procedures (but note he works Mon-Wed). Bakeout ISTP Commissioning Research Plasma Operation CD4 MPTS R&R pre-bake-out MPTS

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