From: Lawrence E. Dudek
Sent: Friday, May 21, 2010 1:44 PM
To: NSTX Center Stack Upgrade Team
Subject: NSTX CSU Project Meeting notes from 5/19/2010
Notes from 5/19 Meeting:
Some dates to remember:
• SRD revisions (Draft) by June 16
• Dry Runs for PDR Jun 8
• PDR June 23-24
• CD-2 Lehman Cost and Schedule Review August 10-11
• CD-2 September

Coil Buswork layouts (Smith)
Mark reviewed the latest routing of the upgrade coil busswork.  Chrzanowski commented that projections vertically from the upper dome port  need to clear the busswork for diagnostic access.  

Outer TF leg support ring drawings [Mangra (see VGs) ]
Danny presented the latest refinement of the outer TF leg support ring.  The ring now runs around the VV at the same radius as the outer legs at the elevation of the TF leg brackets.  The ring now clears the MPTS support column without modifications.


PF 4/5 Support Columns/Tile Qualification/Plasma Disruption Scenarios [Titus (see VGs]
The PF4/5 support columns are now lightly stressed in the latest analysis and can be lightened up.
A spreadsheet and model has been developed to qualify centerstack and passive plates tiles in the upgraded design.

There was a lengthy discussion about the plasma "disruption" scenarios in the GRD.  The existing scenarios move the plasma current from the middle of the VV down to the lower divertor but do not send the current to zero.   Titus questioned whether or not this was realistic.  Should the scenarios be changed with currents ending suddenly at zero to reflect a disruption.  Is there actual disruption data that someone (an intern?) could collect to generate a more realistic disruption.  Action: Neumeyer to respond


Viewgraphs will be posted by B. Simmons at:

http://nstx-upgrade.pppl.gov/Project_Meetings/CenterStackUpgrade/index_Meetings.htm

Outstanding Action Items (last update 5/19/2010)

Action: The idea of a Design Load Requirements (Criteria) Document is a good one. Action: Mark Smith to pull this together for the Structures– Need this BEFORE the PDR

Action:  We have a set of Calculations signed off, but not all were checked for the CDR.  These calcs need to be updated and checked (by PDR?). ACTION: Titus