Summary of NCSX System Integration Team (SIT) Meeting of Monday, April 18, 2005

1.    Re-baselining

• New baseline parameters and key changes will be summarized in briefing to OFES on 4/19.
• Deliverables for the 4/25 re-baselining review should be posted to the web page ASAP.  Action: Ron, Bob, Wayne, Hutch
• A CCB should be scheduled for Friday, 4/22, to secure project and FPD approval of the baseline change before submitting it to OFES. The baseline change must be approved by Dr. Davies.
  

2.    Coil Testing Plans  (Wayne)

• The menu of possibilities is:
  
  • Warm tests (RT): resistance, voltage standoff to ground, hydraulic tests, possibly turn-to-turn voltage standoff.
  • Cold tests:  Cooldown to cryo temperature and repeat of warm tests.
  • Power tests:  Cooldown to cryo temperature, energize to full current, and cool back down.
    
• The incremental cost of power testing is relatively high, benefits are questioned.
• Everyone agreed we should warm test every coil, including poloidal break resistance for the modular coils.  There is a range of opinions on the extent of cold and power testing needed.
• At this time, the project’s position is:
  
  • Baseline is warm testing of all coils and cold and power testing of the first two of each of the four types (MC-A, -B, -C, and TF).
  • More extensive testing is not precluded.  If it proves to be necessary we will have to budget for it and schedule it.
  • A test program needs to be developed and peer reviewed. Brad
    

3.    TF Design Issues

• Out of plane stresses have been recently analyzed by Kalish and Myatt for a coil current configuration devised to serve as a proxy for flexibility requirements.  Although the model is not a detailed one, it showed regions of high out-of-plane stress in parts of the coil that aren’t restrained vertically.
• The sense of the SIT was that restraining the top as it is currently restrained at the bottom would make the system up-down symmetric and probably solve the out-of-plane stress problem. Reportedly Kalish is going in this direction already.
• Kalish is also trying to solve a problem of high stresses in the lead region.
• Brad reported favorable TF beam test results: the beam is strong.
• The TF FDR is scheduled for early May.
  

4.  Project Control (Ron)

• Through March, CPI and SPI are both 1.0 against the new baseline. Against the approved ECP-024 baseline, CPI=0.97 and SPI=0.96 (preliminary). Detailed cost-performance report is not yet available.
  

5.    Research Prep Quarterly Report (Mike)

• Report for second quarter is due 4/22. Responsibility: Mike.
  

6.  Next SIT Meeting: May 2 at 11:00.  Agenda to include kickoff of Lehman review planning.


Summary by:
Hutch Neilson