| Miniproposals | ||||||||||
|
| Operators | |
| Session leader(s): | Steve Wukitch |
| Physics operator(s): | Earl Marmar |
| Engineering operator(s): | Andy Pfeiffer,Bill Byford |
| Engineering Operator Run Comment |
| MP 355 RF Conditionong. P.O. Wolfe S.L. Wukitch |
| Session Leader Plans |
| Physics Operators Plans |
| Entered: Nov 4 2005 09:07:39:380AM |
| Author: Earl Marmar |
| Engineering setup for Friday 4-Nov-2005
MP298A Plasma startup and MP355 RF Conditioning Session leader: Wukitch Physics operator: Marmar Overnight ECDC in D2, and bake at 60 C. Run begins at 09:00 and ends at 17:00 Power systems as on 1051103033 (1.0 MA fiducial, 5.4 T, lower single null) A-coil configuration: normal [+Dtop -Dbot -Jtop +Jbot] and enabled. Gas Setup: fill B-Top with 6 psi D2 Hybrid enabled (PG4) fill B-side lower with 1 psi Ar Hybrid DISABLED (PG1) leave B-side upper as is Hybrid DISABLED (PG2) fill B-main (C-side) with 40 psi D2 Hybrid enabled (PG3) leave NINJA as is DISABLED Enable the following gate valves and shutters: ECE, VUV, Z-bolo shutters Torvac setup: Gate valves open ICRF Setup: YES Important Diagnostics: magnetics, standard impurity spectroscopy Plan: Continue machine cleanup, ICRF conditioning (including Jport). |
| Session Leader Summaries |
| Entered: Nov 4 2005 05:09:58:437PM |
| Author: Steve Wukitch |
| Run summary:
Despite being early in the campaign, this was a productive run. We have reconditioned D antenna up to 1.1 MW but it is struggling to retry when E antenna is at significant power likely result of low single pass absorption (operation was better early when H fraction was lower). Despite this difficulty, we had one dischare with ~4 MW coupled from all antennas. To eliminate the interference between neighboring antennas, we need to operate them at the same frequency, decouple the antennas, and control the phase between antennas (requires new controller). E antenna operated well up to 1.3 MW with little problem. J antenna reached a maximum of ~3 MW for short pulses (20 msec) and 2.5 MW for ~0.2 sec. These power levels were reached without significant impurity injection and the corner tile interaction appears to be much less (interesting observation). |
| Physics Operator Summaries |
| Entered: Nov 4 2005 05:21:51:250PM |
| Author: Earl Marmar |
| The machine operated pretty well today. Bz drifted up through the day, and finding the right fill pressure was not easy. The fizzle/plasma ratio seemed to increase as the day went on. H/(H+D) was in the .1 to .2 range most of the day.
There were a few shots with TCI problems, which caused issues with marfes and target density for the RF. Only 1 shot disrupted today (shot 4). Shot 7 had a bouncy startup and hard x-rays. All 3 RF systems were exercised today, with J-port running up to 2.5 MW for reasonable pulses, and 3 MW for short pulses on the last shot of the day (shot 28). There were short h-modes on many shots. There were no lost shots due to power supply or data acquisition problems. Summary: Plasmas 18 fizzles 8 duds 2 After the run, plan to bake at 60 C, and ECDC in D_2 over the weekend. |
| Session Leader Comments | |||
| Nov 4 2005 09:22:40:037AM | 1051104001 | Steve Wukitch | 001 1 MA fiducial, nl_04~0.9, BT~5.4 T
D: 0.8 MW [1,1.5]sec E: 1.2 MW [1.2,1.5]sec J: 1.5 MW [0.65,1]sec result: plasma - multiple little H-modes D: ran - multiple faults E: ran - 2 faults J: ran - multiple faults |
| Nov 4 2005 09:38:28:810AM | 1051104002 | Steve Wukitch | 002 1 MA fiducial, nl_04~0.9, BT~5.4 T
D: 0.8 MW [1,1.5]sec E: 1.2 MW [1.3,1.5]sec J: 1.5 MW [0.65,1]sec result: plasma - multiple little H-modes D: ran - clean until E E: ran J: ran - 4 faults - video caught interaction on septum excellent sample video |
| Nov 4 2005 09:44:30:450AM | 1051104003 | Steve Wukitch | dud |
| Nov 4 2005 09:53:52:450AM | 1051104004 | Steve Wukitch | early disruption |
| Nov 4 2005 11:52:40:827AM | 1051104005 | Steve Wukitch | 005 1 MA fiducial, nl_04~0.9, BT~5.4 T
D: 1 MW [1,1.5]sec E: 1.2 MW [1.3,1.5]sec J: 1.5 MW [0.65,1]sec result: plasma D: ran - max faults E: ran J: ran - 2 faults |
| Nov 4 2005 11:53:53:827AM | 1051104006 | Steve Wukitch | 006 1 MA fiducial, nl_04~0.9, BT~5.4 T
D: 1 MW [1,1.5]sec E: 1.2 MW [1.3,1.5]sec J: 1.8 MW [0.65,1]sec result: plasma D: ran - max faults E: ran J: ran - 4 faults |
| Nov 4 2005 11:56:29:670AM | 1051104007 | Steve Wukitch | 007 1 MA fiducial, nl_04~0.9, BT~5.4 T
D: 1 MW [1,1.5]sec E: 1 MW [0.9,1.1]sec J: 1.8 MW [0.65,1]sec result: plasma D: ran - 13 faults E: ran J: ran - max faults |
| Nov 4 2005 12:00:03:327PM | 1051104008 | Steve Wukitch | 008 1 MA fiducial, nl_04~0.9, BT~5.4 T
D: 1 MW [1,1.5]sec E: 1 MW [0.9,1.2]sec J: 1.8 MW [0.65,1.1]sec result: plasma D: ran - max faults E: ran J: ran - 7 faults |
| Nov 4 2005 12:04:15:623PM | 1051104009 | Steve Wukitch | 009 1 MA fiducial, nl_04~0.9, BT~5.4 T
D: 1 MW [1,1.5]sec E: 1 MW [0.9,1.2]sec J: 2 MW [0.65,1.1]sec result: plasma D: ran - max faults (fault free when run without E) E: ran J: ran - 4 early faults first blip of 4 MW for the campaign |
| Nov 4 2005 12:11:22:733PM | 1051104010 | Steve Wukitch | post cell entry dud |
| Nov 4 2005 12:22:34:000PM | 1051104011 | Steve Wukitch | fizzle |
| Nov 4 2005 12:38:31:420PM | 1051104012 | Steve Wukitch | 012 1 MA fiducial, nl_04~0.9, BT~5.4 T
D: 1 MW [1,1.5]sec E: 1 MW [0.9,1.2]sec J: 2 MW [0.65,1.3]sec result: plasma D: ran - max faults (fault free when run without E) E: ran J: ran - max faults |
| Nov 4 2005 01:26:45:107PM | 1051104014 | Steve Wukitch | fizzle |
| Nov 4 2005 01:26:59:343PM | 1051104015 | Steve Wukitch | 015 1 MA fiducial, nl_04~0.9, BT~5.4 T
D: 1 MW [1,1.5]sec E: 1 MW [0.9,1.2]sec J: 2 MW [0.65,1.3]sec result: plasma D: ran - 5 faults E: ran J: ran - max faults |
| Nov 4 2005 01:56:57:250PM | 1051104017 | Steve Wukitch | fizzle |
| Nov 4 2005 02:01:17:217PM | 1051104018 | Steve Wukitch | 018 1 MA fiducial, nl_04~0.9, BT~5.4 T
D: 1.1 MW [6,1]sec E: 1.2 MW [0.65,1.]sec J: 2.5 MW [1,1.5]sec result: plasma D: ran - max faults E: ran 1 fault J: ran - 9 faults |
| Nov 4 2005 03:14:23:357PM | 1051104019 | Steve Wukitch | fizzle |
| Nov 4 2005 03:14:17:640PM | 1051104020 | Steve Wukitch | fizzle |
| Nov 4 2005 03:13:39:107PM | 1051104021 | Steve Wukitch | 021 1 MA fiducial, nl_04~0.9, BT~5.4 T
D: 1.1 MW [6,1]sec E: 1.2 MW [0.65,1.]sec J: 2.5 MW [1,1.5]sec result: plasma D: ran - max faults E: ran J: ran - max faults - neutral pressure limit? |
| Nov 4 2005 03:45:49:077PM | 1051104022 | Steve Wukitch | fizzle |
| Nov 4 2005 03:46:02:250PM | 1051104023 | Steve Wukitch | 023 1 MA fiducial, nl_04~0.9, BT~5.4 T
D: 1.1 MW [6,1]sec E: 1.2 MW [0.65,1.]sec J: 2.5 MW [1,1.5]sec result: plasma D: ran - max faults E: ran J: ran - max faults interferometer gave false reading and the density probably was much lower all matches were significantly off |
| Nov 4 2005 03:50:48:967PM | 1051104024 | Steve Wukitch | 024 1 MA fiducial, nl_04~0.9, BT~5.4 T
D: 1.1 MW [6,1]sec E: 1.2 MW [0.65,1.]sec J: 2.5 MW [1,1.5]sec result: plasma -little H-modes D: ran - max faults - still having difficulty with retries E: ran J: ran - max faults but improved |
| Nov 4 2005 04:21:14:623PM | 1051104025 | Steve Wukitch | fizzle |
| Nov 4 2005 04:41:01:903PM | 1051104026 | Steve Wukitch | 026 1 MA fiducial, nl_04~0.9, BT~5.4 T
D: 1.1 MW [6,1]sec E: 1.2 MW [0.65,1.]sec J: 2.5 MW [1,1.5]sec result: plasma D: ran - max faults - still having difficulty with retries E: ran J: ran - 6 faults next shot: Yijun is reaching for more power |
| Nov 4 2005 05:04:05:983PM | 1051104027 | Steve Wukitch | fizzle |
| Nov 4 2005 05:09:40:373PM | 1051104028 | Steve Wukitch | 028 1 MA fiducial, nl_04~0.9, BT~5.4 T
D: 1.1 MW [6,1]sec E: 1.2 MW [0.65,1.]sec J: 3 MW [1,1.5]sec result: plasma D: ran - max faults E: ran J: ran - max faults - first power at 3 MW level |
| Physics Operator Comments | |||
| Nov 4 2005 09:18:49:520AM | 1051104001 | Earl Marmar | load from 1051103033
EF4 10A less negative (-1325 A) increase nl_04 target to 9e19 plasma startup looks ok short H-modes |
| Nov 4 2005 09:37:01:967AM | 1051104002 | Earl Marmar | enable DNB for the next shot
add 1 msec to prefill puff (now 26 msec) plasma short h-modes H/(H+D) is climbing to 0.16 by the end of the shot |
| Nov 4 2005 09:44:12:403AM | 1051104003 | Earl Marmar | no pcs changes
dud; fields look ok |
| Nov 4 2005 10:04:18:717AM | 1051104004 | Earl Marmar | add 2 msec to prefill puff (now 28 msec)
plasma early disruption; big impurity burst around .32 seconds shows up on wide 2, coming from the lower divertor region between C and D |
| Nov 4 2005 10:37:13:200AM | 1051104005 | Earl Marmar | no pcs changes
plasma very short h-modes |
| Nov 4 2005 11:03:28:750AM | 1051104006 | Earl Marmar | enable b side lower (argon) - 50 msec pulse
plasma |
| Nov 4 2005 11:18:05:717AM | 1051104007 | Earl Marmar | cell access for MSE before this shot
no pcs changes plasma bounced, hards |
| Nov 4 2005 11:46:22:263AM | 1051104008 | Earl Marmar | EF4 5 amp more negative before t=0 (now -1330 A)
plasma better startup, no hards |
| Nov 4 2005 11:50:01:763AM | 1051104009 | Earl Marmar | no pcs changes
plasma several significant injections between .3 and .5 seconds 4 MW RF with all antennas overlapping for 60 msec. |
| Nov 4 2005 12:12:22:060PM | 1051104010 | Earl Marmar | cell entry for MSE prior to this shot
no pcs changes dud |
| Nov 4 2005 12:27:54:843PM | 1051104011 | Earl Marmar | add 1 msec to prefill puff, now 29 msec
fizzle |
| Nov 4 2005 12:40:56:420PM | 1051104012 | Earl Marmar | EF4 another 5 A more negative at t=0, now -1335 A
plasma |
| Nov 4 2005 01:07:54:640PM | 1051104013 | Earl Marmar | no pcs changes
plasma |
| Nov 4 2005 01:06:50:310PM | 1051104014 | Earl Marmar | no pcs changes
fizzle |
| Nov 4 2005 01:28:57:530PM | 1051104015 | Earl Marmar | reduce prefill puff by 1 msec to 28 msec
plasma |
| Nov 4 2005 01:57:46:373PM | 1051104016 | Earl Marmar | no pcs changes
plasma |
| Nov 4 2005 01:57:58:437PM | 1051104017 | Earl Marmar | no pcs changes
fizzle |
| Nov 4 2005 02:04:26:530PM | 1051104018 | Earl Marmar | BR_0 offset to -.5 mT (from 0)
plasma slightly later breakdown |
| Nov 4 2005 02:24:01:437PM | 1051104019 | Earl Marmar | no pcs changes
fizzle |
| Nov 4 2005 02:54:20:903PM | 1051104020 | Earl Marmar | reduce prefill puff by 1 msec
fizzle |
| Nov 4 2005 03:16:34:763PM | 1051104021 | Earl Marmar | BR_0 offset back to 0.0000
EF4 5 A more negative at t=0 (now -1340 A) plasma very late breakdown (11 msec), no hards looks like nl04 has a problem early, gas turns on full at ~100 msec and then there is a marfe |
| Nov 4 2005 03:25:12:903PM | 1051104022 | Earl Marmar | no pcs changes
fizzle earlier breakdown |
| Nov 4 2005 03:53:18:577PM | 1051104023 | Earl Marmar | reduce prefill puff by 2 msec, to 25 msec
plasma interferometer has a problem on this one actual density is lower than nl04 would imply |
| Nov 4 2005 03:52:25:187PM | 1051104024 | Earl Marmar | no pcs changes
plasma |
| Nov 4 2005 04:24:15:280PM | 1051104025 | Earl Marmar | cell access for MSE and TCI before this shot
no pcs changes weak fizzle (normal breakdown time, but almost no current) |
| Nov 4 2005 04:51:24:327PM | 1051104026 | Earl Marmar | no pcs changes
plasma |
| Nov 4 2005 04:51:02:530PM | 1051104027 | Earl Marmar | no pcs changes
fizzle fields look ok, B_z may be a tad high |
| Nov 4 2005 05:00:58:810PM | 1051104028 | Earl Marmar | no pcs changes
plasma |
| Engineering Operator Comments | ||||
| Shot | Time | Type | Status | Comment |
| 1 | 09:10:04:003AM | Plasma | Ok | |
| 2 | 09:25:27:270AM | Plasma | Ok | |
| 3 | 09:39:02:840AM | Plasma | Ok | |
| 4 | 09:51:55:343AM | Plasma | Bad | com fault oh2 upper fuse bad |
| 5 | 10:25:11:670AM | Plasma | Ok | |
| 6 | 10:38:10:607AM | Plasma | Ok | |
| 7 | 11:07:09:437AM | Plasma | Ok | |
| 8 | 11:26:44:280AM | Plasma | Ok | |
| 9 | 11:39:47:420AM | Plasma | Ok | |
| 10 | 12:07:43:687PM | Plasma | Ok | |
| 11 | 12:20:42:250PM | Plasma | Ok | |
| 12 | 12:33:44:217PM | Plasma | Ok | |
| 13 | 12:48:39:310PM | Plasma | Ok | |
| 14 | 01:02:47:560PM | Plasma | Ok | |
| 15 | 01:17:59:560PM | Plasma | Ok | |
| 16 | 01:31:17:390PM | Plasma | Ok | |
| 17 | 01:44:29:437PM | Plasma | Ok | |
| 18 | 01:58:00:967PM | Plasma | Ok | |
| 19 | 02:11:13:263PM | Plasma | Ok | |
| 20 | 02:52:06:060PM | Plasma | Ok | |
| 21 | 03:05:05:500PM | Plasma | Ok | |
| 22 | 03:18:35:310PM | Plasma | Ok | |
| 23 | 03:32:07:843PM | Plasma | Ok | |
| 24 | 03:45:01:763PM | Plasma | Ok | |
| 25 | 04:17:56:857PM | Plasma | Ok | |
| 26 | 04:31:50:233PM | Plasma | Ok | |
| 27 | 04:45:02:937PM | Plasma | Ok | |
| 28 | 04:58:03:280PM | Plasma | Ok | |