Alcator C-Mod Run 1020531 Information

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Miniproposals
Miniproposal:
Date Filed:
Title:
First Author:
Session Leader: Unknown (shots 3-20)

Operators
Session leader(s): Unknown
Physics operator(s):Ian Hutchinson
Engineering operator(s):Gary Dekow,Bill Cochran

Engineering Operator Run Comment
Power Tests EO:Cochran/Dekow PO:Hutchinson

Session Leader Plans

Physics Operators Plans

Session Leader Summaries

Physics Operator Summaries

Session Leader Comments

Physics Operator Comments
May 31 2002 08:39:36:330AMIan HutchinsonPower Tests after machine reassembly.

PO Hutch
EO Cochrane

Vessel at 35 deg C. Pressure 3.2e-6, not baked yet.
Coils EFs are at -125. Cylinder -45
May 31 2002 11:12:02:863AM1020531001Ian HutchinsonNo data. Something broken in the system.
May 31 2002 01:26:41:053PM1020531005Ian HutchinsonFinally after many tries and struggles with data system etc
got current in EF2 under PLC control, and some coupling to ef3 and ef4.

mflux shows a plausible looking flux shape.
May 31 2002 02:01:49:107PM1020531006Ian HutchinsonEF2 Lower on PLC control. Looks good.
May 31 2002 02:02:07:903PM1020531008Ian HutchinsonChopper test. OK
May 31 2002 02:03:17:563PM1020531009Ian HutchinsonHigher current chopper test.

The radial field (Br(mflux)) is positive for these cases which have
positive current in the efc_l rogowski. This is correct polarity so the
coils are hooked up correctly.
May 31 2002 02:54:16:110PM1020531011Ian HutchinsonEF3 test positive current looks ok.
May 31 2002 02:58:59:210PM1020531012Ian HutchinsonEF4 test negative 2kA.

Granetz replaces bp26_gh with bp26_bc in hybrid input 55.
May 31 2002 03:09:14:510PM1020531012Ian HutchinsonCalled the Rcur controller. Initially when I tried to edit it, it said
I could not because bp26 was wrong. Then after calling it had bp26_bc and
could be displayed through edit.

Then hit the algs button in segment 1. It seemed to call all the algorithms.
There were a few where the scale factor did not satisfy the criterion for
all the values, but I ignored that and just hit ok.
Load.

Call the algorithms for segments 2-4. All ok except for the NL04 factor
which I just oked anyway.
Load/clean.
May 31 2002 03:35:05:297PM1020531013Ian HutchinsonEF4 1kA positive current.

Now load wire of segment 1 wire 15 from 1000816027 the double swing EF4

May 31 2002 04:05:24:180PM1020531014Ian HutchinsonDouble swung EF4 looks ok.
Asked for -1200 to +1000 but got -1000 to +800.
May 31 2002 04:06:11:590PM1020531015Ian HutchinsonEF1_u -2000A PLC control ok.
May 31 2002 04:19:13:360PM1020531016Ian HutchinsonEF!_u +2000A
May 31 2002 04:19:32:407PM1020531017Ian HutchinsonOperator error. Not enabled.
May 31 2002 04:30:17:407PM1020531018Ian HutchinsonEF1_l -2000A PLC controlled.
May 31 2002 04:48:00:467PM1020531019Ian HutchinsonEF1 +2000A.

Engineering Operator Comments
ShotTimeTypeStatusComment
312:26:52:447PMTestBadCamac and plc problems
412:48:58:137PMTestOkCamac Test Shot
501:03:46:940PMTestOkef2U Test only
601:24:21:863PMTestOk
701:38:03:510PMTestOkEF2L Test
801:48:07:430PMTestOkefc chopper test 400V
901:59:10:133PMTestOkefc chopper test 600V
1002:07:52:790PMTestOkefc chopper test 800v
1102:37:50:850PMTestOkef3 test
1202:50:53:120PMTestOkef4 forward test
1303:19:58:900PMTestOkef4 reverse test
1403:33:16:700PMTestOkef4 double swing test
1503:57:17:427PMTestOkef1u test
1604:06:12:450PMTestOkef1u reverse test
1704:14:46:667PMTestBadef1l forward, PS not enabled
1804:22:45:397PMTestOkef1L forward test
1904:31:14:737PMTestOkef1L reverse test
2004:42:22:440PMTestOkEF1U and L Commutation Test