From:	Lawrence E. Dudek
Sent:	Wednesday, January 26, 2011 10:36 AM
To:	NSTX Center Stack Upgrade Team
Subject:	Notes from CSU Project Meeting 1/19/2011
Attachments:	20101213 NSTX UPGRADE Calculations-RTS_11112010 (version 1).xlsx; 
ATT1925121.htm

Notes from 1/19 Meeting:

Reviewed the Analysis spreadsheet (See Attached)
Updated spreadsheet attached with overall progress curve. 
 
Proposed update to method for calculation of Forces in DP Spreadsheet  (Neumeyer) (see 
VGs)
Prior versions of DP spreadsheet present forces based on 96 sets of OH/PF currents, multiplied by a 
“headroom” factor,  without plasma and without consideration of post-disruption current 
distribution
Comparison of results for three cases is recommended to guide the choice of model and calculation of 
influence matrix and current shifts
	1.Circular model as used by R Hatcher
	2.Rectangular model as used by R Woolley
	3.Typical plasma equilibria from J Menard with non-uniform current density
Worst of the three cases will be reported on the web page for the nominal condition.  


Bellows Analysis  (Rogoff) (see VGs)
The bellows total stresses were in the range of 61 to 67 ksi depending on thickness.  This is acceptable 
for an Inconel 718 bellows.



Viewgraphs will be posted by B. Simmons at:

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