Alcator C-Mod Run 930506 Information

Miniproposals

Miniproposal:

Date Filed:

Title:

First Author:

Session Leader: Yuichi Takase (shots 1-35)

Operators
Session leader(s):	Yuichi Takase
Physics operator(s):	John Goetz
Engineering operator(s):	Unknown

Engineering Operator Run Comment
TF Power supply test.

Session Leader Plans

Physics Operators Plans

Session Leader Summaries

Physics Operator Summaries

Session Leader Comments

May 6 1993 08:44:36:150AM Yuichi Takase Today's run plan (May 6, 1993):
Try to fix the TF crowbar problem.
If TF fixed, will continue where we left off yesterday and try for plasma.

(An entry like this was made for Run 930505 Shot 930505009. Ignore it.)

May 7 1993 08:16:40:350AM John Goetz test -- can Goetz write?

May 7 1993 08:44:03:690AM John Goetz
This case's waveforms come from USER10:[WOLFE.MDS.SHOTS.HYBRID.PCS]PCS_141.*;
The simulated shot data is in CMOD_SIM$ROOT: shot #141.

The scenario in PCS_141 has the following properties:

Commutation resistors:
OH1 0.156 Ohm
OH2U&L 0.035
EF1U&L 0.236

OH1, OH2U&L, EF1U&L and EF4:
ON= -1.60 sec
CLOSE= -1.55
OPEN= 0. (OH1,OH2U&L,EF1U&L only)
CROWBAR=0.030 (OH1,OH2U&L,EF1U&L only)
INVERT= 0.250

EF3:
ON= anytime before -.050 sec
INVERT= +.250

EF2U&L each have ballast resistor = 35e-3 Ohm (not critical)
ON= anytime before 0.0 sec
CLOSE= 0.030
INVERT=0.250

PLC current limits at or above drawn waveforms, eg
OH1 20kA
OH2U&L 17kA
EF1U&L 10kA
EF2U&L 5kA
EF3 12kA (supply current)
EF4 4kA

The plasma is assumed to breakdown at 0.020 sec, and
rise at 1.e6 A/sec.

May 6 1993 09:16:15:700AM 930506001 Yuichi Takase All subtrees not needed for TF tests have been turned off this morning. They
will be turned back on when plasma tests are started.

May 6 1993 09:53:46:170AM 930506001 Yuichi Takase TF2 15kA failing at inversion (single phasing)

May 6 1993 10:09:24:030AM 930506002 Yuichi Takase same, TF2 breaker (TF3 cabinet), same fault

May 6 1993 10:10:33:180AM 930506003 Yuichi Takase fixed, 15kA TF3 cabinet, OK

May 6 1993 10:11:11:650AM 930506004 Yuichi Takase 30kA TF3 cabinet, OK

May 6 1993 10:16:10:400AM 930506005 Yuichi Takase 15kA TF4 cabinet (TF2 breaker), commutation failure

May 6 1993 10:34:01:130AM 930506006 Yuichi Takase 15kA TF4 cabinet, OK

May 6 1993 10:36:05:240AM 930506007 Yuichi Takase 30kA TF4 cabinet, commutation failure during rampdown

May 6 1993 11:01:59:740AM 930506008 Yuichi Takase 15kA TF4 OK
Testing EF3 resistance measurement for noise,
and also looking for voltage spikes.
EF3 supply on and breaker closed with 0 programmed voltage.

May 6 1993 11:06:52:480AM 930506009 Yuichi Takase 30kA TF4 OK
No change in EF3 bus voltage. Removed short (back to normal).

May 6 1993 11:18:49:130AM 930506010 Yuichi Takase Previous two shots were TF7, not TF4.
TF8 15kA OK.

May 6 1993 11:26:50:870AM 930506011 Yuichi Takase TF8 30kA OK.

May 6 1993 11:48:25:910AM 930506012 Yuichi Takase TF7 + TF8 60kA commutation failure. Faulted at 18kA.

May 6 1993 11:57:26:420AM 930506013 Yuichi Takase TF7 + TF8 25kA commutation failure (same).

May 6 1993 12:06:10:510PM 930506014 Yuichi Takase Previous entry was for shot 14.
TF7 + TF8 25kA OK.
EF3 open.

May 6 1993 12:11:14:380PM 930506015 Yuichi Takase TF7 + TF8 50kA commutation fault at 35kA

May 6 1993 12:29:02:860PM 930506016 Yuichi Takase TF7 + TF8 50kA commutation fault at 35kA (same)

May 6 1993 01:12:11:500PM 930506017 Yuichi Takase TF7 + TF8 50kA commutation fault at 35kA (same)

May 6 1993 01:31:53:260PM 930506018 Yuichi Takase TF7 + TF8 50kA commutation fault at 35kA (same)

May 6 1993 01:47:17:410PM 930506019 Yuichi Takase TF7 + TF8 50kA OK. (commutation fault disabled)

May 6 1993 01:56:28:620PM 930506020 Yuichi Takase No trigger

May 6 1993 01:58:38:590PM 930506021 Yuichi Takase TF7 + TF8 60kA regulated OK, inverted OK.

May 6 1993 02:29:46:870PM 930506022 Yuichi Takase TF7 + TF8 45kA OK.

May 6 1993 02:48:08:220PM 930506023 Yuichi Takase TF7 + TF8 45kA OK.

May 6 1993 04:28:12:340PM 930506024 Yuichi Takase TF7 + TF8 45kA OK.

May 6 1993 04:28:37:180PM 930506025 Yuichi Takase TF7 + TF8 45kA OK.

May 6 1993 04:28:50:680PM 930506026 Yuichi Takase TF7 + TF8 45kA OK.

May 6 1993 04:29:02:920PM 930506027 Yuichi Takase TF7 + TF8 45kA OK.

May 6 1993 04:29:14:700PM 930506028 Yuichi Takase TF7 + TF8 45kA OK.

May 6 1993 04:29:26:720PM 930506029 Yuichi Takase TF7 + TF8 45kA OK.

May 6 1993 04:32:19:380PM 930506030 Yuichi Takase TF7 + TF8 60kA OK. Problem fixed.

May 6 1993 05:05:22:200PM 930506031 Yuichi Takase TF4 15kA OK.

May 6 1993 05:05:38:220PM 930506032 Yuichi Takase TF4 30kA OK.

May 6 1993 05:06:20:390PM 930506033 Yuichi Takase TF3 + TF4 50kA OK.

May 6 1993 05:13:11:920PM 930506034 Yuichi Takase TF3+4+7+8 100kA OK.

May 6 1993 05:28:09:930PM 930506035 Yuichi Takase TF3+4+7+8 105kA IOC (instantaneous overcurrent) fault on 4.
Pressure is reading 4E-7.
End of run.

Physics Operator Comments

Engineering Operator Comments

Shot Time Type Status Comment

1 09:12:43:870AM Test Ok test shot good 15 k Amp Bypass didn't operate with emergrcy off button.

2 09:41:30:110AM Test Bad need to disable gate extender bd.

3 09:56:23:070AM Test Ok good shot.

4 10:04:11:430AM Test Ok Good Shot

5 10:11:27:200AM Test Bad Bad comm. con. bd.

6 10:23:39:580AM Test Ok Good shot Com,conduction bd. disconnected.

7 10:28:51:780AM Test Bad comutation fail in inversion

8 10:54:56:810AM Test Ok Good shot cabinet # 7 15 k amp

9 11:03:03:390AM Test Ok Good shot 30 Kamp

10 11:14:37:890AM Test Ok Good pulse Cabinet 8 15kamp.

11 11:19:48:130AM Test Ok Good shot 30 Kamps cabinet # 8.

12 11:34:29:900AM Test Bad asking for 60 Kamps commutation failure at 18 kamp cabinet #4

13 11:49:21:220AM Test Bad Cabinet #4 fault

14 12:00:12:920PM Test Ok good

15 12:05:54:090PM Test Ok cabint #4 Faulted at 35 kamp asking for 50 KA.

16 12:21:47:450PM Test Bad TF Crowbar exact same place

17 12:48:07:270PM Test Bad TF Crowbar same

18 01:08:07:340PM Test Bad same problem

19 01:38:23:240PM Test Ok 50KA pulse cabinet #4 no fault .

20 01:48:19:520PM Test Bad No Camac

21 01:52:27:660PM Test Ok good 60 kA test with comm fault disconnected in TF

22 02:25:10:060PM Test Ok 45 kA TF 4 with comm fail disconnected

23 02:42:19:660PM Test Ok 45 Kamp shot Converter #4.

24 02:54:58:650PM Test Ok Good Shot cheaking Master commutation, conduction bd. for faults

25 03:06:29:490PM Test Ok Good Testing comm. cond. master Bd.

26 03:18:42:770PM Test Ok Test Pulse O.K.

27 03:27:05:580PM Test Ok Testing com. cond. Bd.

28 03:38:18:260PM Test Ok Commutation conductance board test

29 04:12:28:650PM Test Ok commutation bd test

30 04:18:47:530PM Test Ok good

31 04:49:08:960PM Test Ok good

32 04:54:36:390PM Test Ok good

33 05:02:13:210PM Test Ok 50 kamp pulse converter #2 good

34 05:08:52:800PM Test Ok 100 KA shot good

35 05:18:51:980PM Test Bad faulted in inverson

Session Leader Comments
May 6 1993 08:44:36:150AM		Yuichi Takase	Today's run plan (May 6, 1993): Try to fix the TF crowbar problem. If TF fixed, will continue where we left off yesterday and try for plasma. (An entry like this was made for Run 930505 Shot 930505009. Ignore it.)
May 7 1993 08:16:40:350AM		John Goetz	test -- can Goetz write?
May 7 1993 08:44:03:690AM		John Goetz	This case's waveforms come from USER10:[WOLFE.MDS.SHOTS.HYBRID.PCS]PCS_141.*; The simulated shot data is in CMOD_SIM$ROOT: shot #141. The scenario in PCS_141 has the following properties: Commutation resistors: OH1 0.156 Ohm OH2U&L 0.035 EF1U&L 0.236 OH1, OH2U&L, EF1U&L and EF4: ON= -1.60 sec CLOSE= -1.55 OPEN= 0. (OH1,OH2U&L,EF1U&L only) CROWBAR=0.030 (OH1,OH2U&L,EF1U&L only) INVERT= 0.250 EF3: ON= anytime before -.050 sec INVERT= +.250 EF2U&L each have ballast resistor = 35e-3 Ohm (not critical) ON= anytime before 0.0 sec CLOSE= 0.030 INVERT=0.250 PLC current limits at or above drawn waveforms, eg OH1 20kA OH2U&L 17kA EF1U&L 10kA EF2U&L 5kA EF3 12kA (supply current) EF4 4kA The plasma is assumed to breakdown at 0.020 sec, and rise at 1.e6 A/sec.
May 6 1993 09:16:15:700AM	930506001	Yuichi Takase	All subtrees not needed for TF tests have been turned off this morning. They will be turned back on when plasma tests are started.
May 6 1993 09:53:46:170AM	930506001	Yuichi Takase	TF2 15kA failing at inversion (single phasing)
May 6 1993 10:09:24:030AM	930506002	Yuichi Takase	same, TF2 breaker (TF3 cabinet), same fault
May 6 1993 10:10:33:180AM	930506003	Yuichi Takase	fixed, 15kA TF3 cabinet, OK
May 6 1993 10:11:11:650AM	930506004	Yuichi Takase	30kA TF3 cabinet, OK
May 6 1993 10:16:10:400AM	930506005	Yuichi Takase	15kA TF4 cabinet (TF2 breaker), commutation failure
May 6 1993 10:34:01:130AM	930506006	Yuichi Takase	15kA TF4 cabinet, OK
May 6 1993 10:36:05:240AM	930506007	Yuichi Takase	30kA TF4 cabinet, commutation failure during rampdown
May 6 1993 11:01:59:740AM	930506008	Yuichi Takase	15kA TF4 OK Testing EF3 resistance measurement for noise, and also looking for voltage spikes. EF3 supply on and breaker closed with 0 programmed voltage.
May 6 1993 11:06:52:480AM	930506009	Yuichi Takase	30kA TF4 OK No change in EF3 bus voltage. Removed short (back to normal).
May 6 1993 11:18:49:130AM	930506010	Yuichi Takase	Previous two shots were TF7, not TF4. TF8 15kA OK.
May 6 1993 11:26:50:870AM	930506011	Yuichi Takase	TF8 30kA OK.
May 6 1993 11:48:25:910AM	930506012	Yuichi Takase	TF7 + TF8 60kA commutation failure. Faulted at 18kA.
May 6 1993 11:57:26:420AM	930506013	Yuichi Takase	TF7 + TF8 25kA commutation failure (same).
May 6 1993 12:06:10:510PM	930506014	Yuichi Takase	Previous entry was for shot 14. TF7 + TF8 25kA OK. EF3 open.
May 6 1993 12:11:14:380PM	930506015	Yuichi Takase	TF7 + TF8 50kA commutation fault at 35kA
May 6 1993 12:29:02:860PM	930506016	Yuichi Takase	TF7 + TF8 50kA commutation fault at 35kA (same)
May 6 1993 01:12:11:500PM	930506017	Yuichi Takase	TF7 + TF8 50kA commutation fault at 35kA (same)
May 6 1993 01:31:53:260PM	930506018	Yuichi Takase	TF7 + TF8 50kA commutation fault at 35kA (same)
May 6 1993 01:47:17:410PM	930506019	Yuichi Takase	TF7 + TF8 50kA OK. (commutation fault disabled)
May 6 1993 01:56:28:620PM	930506020	Yuichi Takase	No trigger
May 6 1993 01:58:38:590PM	930506021	Yuichi Takase	TF7 + TF8 60kA regulated OK, inverted OK.
May 6 1993 02:29:46:870PM	930506022	Yuichi Takase	TF7 + TF8 45kA OK.
May 6 1993 02:48:08:220PM	930506023	Yuichi Takase	TF7 + TF8 45kA OK.
May 6 1993 04:28:12:340PM	930506024	Yuichi Takase	TF7 + TF8 45kA OK.
May 6 1993 04:28:37:180PM	930506025	Yuichi Takase	TF7 + TF8 45kA OK.
May 6 1993 04:28:50:680PM	930506026	Yuichi Takase	TF7 + TF8 45kA OK.
May 6 1993 04:29:02:920PM	930506027	Yuichi Takase	TF7 + TF8 45kA OK.
May 6 1993 04:29:14:700PM	930506028	Yuichi Takase	TF7 + TF8 45kA OK.
May 6 1993 04:29:26:720PM	930506029	Yuichi Takase	TF7 + TF8 45kA OK.
May 6 1993 04:32:19:380PM	930506030	Yuichi Takase	TF7 + TF8 60kA OK. Problem fixed.
May 6 1993 05:05:22:200PM	930506031	Yuichi Takase	TF4 15kA OK.
May 6 1993 05:05:38:220PM	930506032	Yuichi Takase	TF4 30kA OK.
May 6 1993 05:06:20:390PM	930506033	Yuichi Takase	TF3 + TF4 50kA OK.
May 6 1993 05:13:11:920PM	930506034	Yuichi Takase	TF3+4+7+8 100kA OK.
May 6 1993 05:28:09:930PM	930506035	Yuichi Takase	TF3+4+7+8 105kA IOC (instantaneous overcurrent) fault on 4. Pressure is reading 4E-7. End of run.

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	09:12:43:870AM	Test	Ok	test shot good 15 k Amp Bypass didn't operate with emergrcy off button.
2	09:41:30:110AM	Test	Bad	need to disable gate extender bd.
3	09:56:23:070AM	Test	Ok	good shot.
4	10:04:11:430AM	Test	Ok	Good Shot
5	10:11:27:200AM	Test	Bad	Bad comm. con. bd.
6	10:23:39:580AM	Test	Ok	Good shot Com,conduction bd. disconnected.
7	10:28:51:780AM	Test	Bad	comutation fail in inversion
8	10:54:56:810AM	Test	Ok	Good shot cabinet # 7 15 k amp
9	11:03:03:390AM	Test	Ok	Good shot 30 Kamp
10	11:14:37:890AM	Test	Ok	Good pulse Cabinet 8 15kamp.
11	11:19:48:130AM	Test	Ok	Good shot 30 Kamps cabinet # 8.
12	11:34:29:900AM	Test	Bad	asking for 60 Kamps commutation failure at 18 kamp cabinet #4
13	11:49:21:220AM	Test	Bad	Cabinet #4 fault
14	12:00:12:920PM	Test	Ok	good
15	12:05:54:090PM	Test	Ok	cabint #4 Faulted at 35 kamp asking for 50 KA.
16	12:21:47:450PM	Test	Bad	TF Crowbar exact same place
17	12:48:07:270PM	Test	Bad	TF Crowbar same
18	01:08:07:340PM	Test	Bad	same problem
19	01:38:23:240PM	Test	Ok	50KA pulse cabinet #4 no fault .
20	01:48:19:520PM	Test	Bad	No Camac
21	01:52:27:660PM	Test	Ok	good 60 kA test with comm fault disconnected in TF
22	02:25:10:060PM	Test	Ok	45 kA TF 4 with comm fail disconnected
23	02:42:19:660PM	Test	Ok	45 Kamp shot Converter #4.
24	02:54:58:650PM	Test	Ok	Good Shot cheaking Master commutation, conduction bd. for faults
25	03:06:29:490PM	Test	Ok	Good Testing comm. cond. master Bd.
26	03:18:42:770PM	Test	Ok	Test Pulse O.K.
27	03:27:05:580PM	Test	Ok	Testing com. cond. Bd.
28	03:38:18:260PM	Test	Ok	Commutation conductance board test
29	04:12:28:650PM	Test	Ok	commutation bd test
30	04:18:47:530PM	Test	Ok	good
31	04:49:08:960PM	Test	Ok	good
32	04:54:36:390PM	Test	Ok	good
33	05:02:13:210PM	Test	Ok	50 kamp pulse converter #2 good
34	05:08:52:800PM	Test	Ok	100 KA shot good
35	05:18:51:980PM	Test	Bad	faulted in inverson