Alcator C-Mod Run 1030418 Information

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Miniproposals
Miniproposal:
Date Filed:
Title:
First Author:
Session Leader: Unknown (shots 1-35)

Operators
Session leader(s): Unknown
Physics operator(s):Steve Wolfe,Jim Irby
Engineering operator(s):Gary Dekow,Bill Cochran

Engineering Operator Run Comment
Power System Tests

Session Leader Plans

Physics Operators Plans

Session Leader Summaries

Physics Operator Summaries
Entered: Jul 7 2004 04:37:17:333PM
Author: To Be Determined
Physop Summary for 1030418 --- Power Tests

EO: Cochran/Dekow
PO: Irby/Wolfe

Following the first full cooldown for this run campaign, we
started working our way through all the power supplies. Except
for one problem during the EF4 test, all supplies came up well
and with little effort. A bad chip in the EF4 controller caused
the supply to run for more than 6 seconds, requiring an e-stop
to shut it down. After going through all the supplies, a
successful plasma attempt was made on shot 35. A 170 ms, 500 kA
plasma was produced.

Problems: Some data system problems. EF4 problem.

tests: 34
plasmas: 01

Session Leader Comments

Physics Operator Comments
Apr 18 2003 12:11:09:717PM1030418013Jim IrbyEnabled b-side-upper gas --- it was disabled for earlier shots today

Disabled all other gas valves

OH-Coax resistances have been looking very good on
earlier shots: all ~< 1 uOhm

Apr 18 2003 04:22:04:070PM1030418029Jim IrbySet prefill from -.520 to -.500 at 100.

Didn't load in time
Apr 18 2003 04:22:48:587PM1030418030Jim IrbyLooks like we have proper pressure at t=0: about 5 to 6e-5 Torr
Apr 18 2003 04:43:17:327PM1030418032Jim Irbyapprox 45 kA in TF as seen on shunt

loose connection on TF bus Rogowski

no ground fault current on any supply
Apr 18 2003 05:13:01:167PM1030418033Jim IrbyTF Rogowski back in operation

100 kA TF
Apr 18 2003 05:18:16:357PM1030418035Jim IrbyLoaded segment 1 from 1021107010 --- 800 kA shot

Plasma!

180 ms, 500 kA

Engineering Operator Comments
ShotTimeTypeStatusComment
109:29:11:323AMTestBadNo Power Shot
209:38:28:983AMTestOkData System Test
309:53:02:150AMTestOkOH1 PLC Power System Test
410:05:17:940AMTestOkOH1 10KA PLC Test
510:15:21:490AMTestOkOH1 Forward Bridge PLC Test
610:27:50:580AMTestOkOH2U 1KA PLC Power Test
710:39:56:593AMTestBad
810:54:06:960AMTestOkOH2U Reverse Bridge 1KA
911:09:29:297AMTestBadNo Power Test
1011:21:52:370AMTestOkOH2L 1 KA PLC Test
1111:31:06:123AMTestOkOH2L Forward Bridge 1KA
1211:43:22:963AMTestOkOH2L 1KA PLC Test
1311:55:23:070AMTestOkEF1U PLC Test at 2 KA
1412:05:21:337PMTestOkEF1U 4KA PLC Test
1512:14:43:617PMTestOkEF1U Reverse Bridge 2KA PLC Test
1612:23:21:963PMTestOkEF1L 2KA PLC Test
1712:31:48:153PMTestOkEF1L 4KA PLC Test
1812:40:26:267PMTestOkEF1L Reverse Bridge 2 kA
1901:00:35:523PMTestOkEF2U at 3 KA PLC Test
2001:11:07:607PMTestBadEF2L PLC Test Bad Control
2101:48:43:590PMTestOkEF3 PLC Test at 2 kA
2202:00:23:593PMTestOkEF3 6Ka PLC Test
2302:11:32:317PMTestOkEF4 Forwrad Bridge at 2 Ka
2402:20:39:523PMTestOkEF4 PLC Test at 4 ka
2502:29:57:010PMTestOkEF4 Resvers Bridge
2603:26:28:860PMTestOkEF2L Power Supply at 3 kA
2703:35:05:660PMTestOkEFC and Chopper conditioning
2803:44:08:600PMTestOkEFC and Chopper Conditioning
2903:59:58:530PMTestOkEFC and Chopper Conditioning
3004:12:57:833PMTestOkOH Commutation Test
3104:22:34:240PMTestOkEF1 Commutation Test
3204:31:15:963PMTestOkTF 50 KA Test
3304:44:27:733PMTestOkTF 100 kA Test
3404:54:30:830PMTestOkTF 150 kA PLC Test
3505:05:29:163PMTestOkPlasma Shot