Miniproposals

Miniproposal: Date Filed: Title: First Author: Session Leader: Unknown (shots 1-33)

Engineering Operator Run Comment

Startup PO:Parker; EO:Dekow/Byford

Session Leader Plans

Physics Operators Plans

Session Leader Summaries

Physics Operator Summaries

Entered: Jul 7 2004 04:37:17:537PM

Author: To Be Determined

Run Summary 1030424 This was a clean up run, the third day of running shots since a long vacuum opening. We started with shot 1030423015 with pre- programmed gas since the interferometer was in the process of being brought up. Beginning with shot 6, the interferometer was in operation and the density was feedback controlled. But the density was more controlled by recyled gas than the programmed waveform since only low density (0.5e^20) shots were run. Other key parameters were Ip = 800 kA and BT = 5.4 t. The machine ran fairly well for a condiitoning run, the startup was not as reliable as the previous day.The main problem was heavy runaways, especially early in the shot. By increasing the initial density the runaway level could be reduced, however the startup became less reliable.Thus there were more fizzles than in the previous run day. We also had some engineering problems with I^2*T faults coming up in several shots. In the end, the scorecard read: 18 shots including 1 disruption before rampdown, 3 duds, 5 fizzles and 6 power tests and 1 dud caused by power supply initiation problem. RUN PLAN FOR THURSDAY, 24 APRIL 2003 PURPOSE: STARTUP (CONTINUED) ENGINEERING SETUP ECDC in D2 overnight prior to run. 60 C bake. Run Starts at 9:00 AM Power systems as on 1030422016 Gas setup: Fill B-Top with 6psi of D2 hybrid enabled (PG4) Fill B-side lower with 1 psi Ar Hybrid enabled Fill B-side upper with 10 psi D2 Hybrid Disabled fill C-side with 30 psi D2 Hybrid enabled

Session Leader Comments

Physics Operator Comments
Apr 24 2003 09:11:12:673AM	1030424001	Ron Parker	First shot was a dud.
Apr 24 2003 09:46:15:460AM	1030424002	Ron Parker	Shot 2 ran well
Apr 24 2003 09:47:09:917AM	1030424003	Ron Parker	Shot 3 ran well
Apr 24 2003 09:56:40:480AM	1030424003	Ron Parker	For next shot, density feedback will be on.
Apr 24 2003 10:11:17:733AM	1030424004	Ron Parker	Shot 4 was a dud. Fill gas had dropped about 20%. Raise on next shot.
Apr 24 2003 10:25:02:147AM	1030424005	Ron Parker	Shot 5 was also a dud. Raise fill gas again.
Apr 24 2003 10:54:33:643AM	1030424006	Ron Parker	Shot 6 ran well, density feedback is working. Lots of hard xrays. We'll try to reduce them by raising the inital density using pulse gas valve 3.
Apr 24 2003 11:09:34:107AM	1030424007	Ron Parker	Hards are still a problem. We'll continue to raise the initial density.
Apr 24 2003 11:43:54:267AM	1030424008	Ron Parker	We are continuing to raise the intial density, but no effect on hards.
Apr 24 2003 11:44:47:787AM	1030424009	Ron Parker	On next shot we'll increase the early pulse gas in Seg 1.
Apr 24 2003 12:00:19:497PM	1030424010	Ron Parker	Making some progress on hards, but still too strong. We continue to increase early density.
Apr 24 2003 12:28:48:103PM	1030424011	Ron Parker	Success - shot 11 had low hard x-rays.
Apr 24 2003 12:29:56:307PM	1030424012	Ron Parker	Shot 12 fizzled, too high inital density.
Apr 24 2003 12:34:01:780PM	1030424013	Ron Parker	This shot will be a power test.
Apr 24 2003 12:45:26:783PM	1030424014	Ron Parker	Shot 14 fizzled. We'll continue to backoff on initial gas.
Apr 24 2003 12:58:15:490PM	1030424015	Ron Parker	Shot 15 fizzled. We'll reload shot 1030424007
Apr 24 2003 01:10:07:290PM	1030424016	Ron Parker	Shot 16 will be a no-power shot
Apr 24 2003 01:26:29:893PM	1030424017	Ron Parker	Corection--this was a plasma shot! As with shot 7, the hards are back. We'll run this once more, then try the fix suggested by Ian.
Apr 24 2003 01:40:47:417PM	1030424018	Ron Parker	Shot went, hard x-rays are bad and the shot disrupted at 1.4 s. For next shot, the EF3 preprogrammed voltage will be increased by 50 volts (to 2450) at t= 12 ms.
Apr 24 2003 01:53:07:717PM	1030424019	Ron Parker	Shot fizzled. It might have been due to previous shot's disruption. Try again.
Apr 24 2003 02:18:01:440PM	1030424020	Ron Parker	Shot ran OK, but hards are still there.
Apr 24 2003 02:20:16:900PM	1030424021	Ron Parker	Shot 21 was a no-power shot, I^2*T fault came up.
Apr 24 2003 02:38:54:817PM	1030424022	Ron Parker	Shot 22 ran, but hards are a problem.
Apr 24 2003 02:50:28:477PM	1030424023	Ron Parker	Starting to increase density to reduce hard x-ray problem. Next shot, density will be increased to 1.0e20.
Apr 24 2003 03:23:12:713PM	1030424024	Ron Parker	Shot 24 ran with nl4 = 1.e20. Hards reduced after high density is reached.
Apr 24 2003 03:24:11:513PM	1030424025	Ron Parker	Shot 25 disrupted at about 50 msec.
Apr 24 2003 03:36:24:470PM	1030424026	Ron Parker	This shot was a fizzle, probably because of the disruption in shot 25.
Apr 24 2003 03:50:53:283PM	1030424027	Ron Parker	Shot 27 was a dud. There was an EF power supply failure to initialize.
Apr 24 2003 03:56:55:730PM	1030424028	Ron Parker	Shot 28 was a no-power shot.
Apr 24 2003 04:32:48:753PM	1030424029	Ron Parker	Shot 29 will be a no-power shot
Apr 24 2003 04:34:16:663PM	1030424030	Ron Parker	Shot 30 went off, although there was a hesitiation during the current rise.
Apr 24 2003 04:46:06:667PM	1030424031	Ron Parker	Shot 31 went off OK, but the hards remain a problem.
Apr 24 2003 04:53:17:880PM	1030424032	Ron Parker	This shot will be a baseline shot for diagnostic calibration (aka a no-power shot).
Apr 24 2003 05:27:31:527PM	1030424033	Ron Parker	Shot 33 went off OK. Still have the hard x-ray problem.

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	09:05:54:197AM	Plasma	Ok
2	09:19:08:250AM	Plasma	Ok
3	09:34:01:210AM	Plasma	Ok
4	09:58:07:620AM	Plasma	Ok
5	10:11:10:983AM	Plasma	Ok
6	10:24:03:850AM	Plasma	Ok
7	10:55:39:037AM	Plasma	Ok
8	11:20:54:687AM	Plasma	Ok
9	11:34:42:347AM	Plasma	Ok
10	11:47:44:180AM	Plasma	Ok
11	12:00:55:200PM	Plasma	Ok
12	12:13:37:343PM	Plasma	Ok
13	12:30:30:510PM	Plasma	Bad	Camac Init Error on BUSHV DDECODER
14	12:40:43:573PM	Plasma	Ok
15	12:53:20:687PM	Plasma	Ok
16	01:07:50:350PM	Plasma	Bad	I2T Fault
17	01:18:09:320PM	Plasma	Ok
18	01:31:21:980PM	Plasma	Ok
19	01:44:48:780PM	Plasma	Ok
20	01:59:54:727PM	Plasma	Ok
21	02:15:11:657PM	Plasma	Bad	I2T fault
22	02:25:38:373PM	Plasma	Ok
23	02:39:00:880PM	Plasma	Ok
24	02:52:38:917PM	Plasma	Ok
25	03:07:55:940PM	Plasma	Bad	OH2U/L Comm Fault OH1 Self Powered Circuit fired
26	03:26:09:170PM	Plasma	Ok
27	03:40:25:097PM	Plasma	Bad	Camac Problem Power Supply
28	03:53:23:537PM	Plasma	Bad	Camac Problem no Power Shot
29	04:11:35:347PM	Test	Ok	Camac test shot
30	04:21:37:690PM	Plasma	Ok
31	04:37:07:510PM	Plasma	Ok
32	04:51:54:677PM	Plasma	Bad	I2T Problem Baseline Shot
33	05:02:58:270PM	Plasma	Ok