| Miniproposals | ||||||||||
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| Operators | |
| Session leader(s): | Yuichi Takase,Yuichi Takase |
| Physics operator(s): | John Goetz |
| Engineering operator(s): | Bill Cochran,Vinny Bertolino,Frank Silva,Dave Terry |
| Engineering Operator Run Comment |
| Setup per 970528044,MP 170A,MP171A/Silva/Cochran/Terry/Goetz |
| Session Leader Plans |
| Physics Operators Plans |
| Session Leader Summaries |
| Entered: Jul 7 2004 03:49:16:710PM |
| Author: To Be Determined |
| Run summary 970604 SL: Takase PO: Goetz EO: Bertolino MP171A 40MHz testing/conditioning Transmitters #3 and #4 ready (1MW into dummy load) Top priority: RF power into plasma at a level of 1MW from each transmitter. MP178 MCCD D-He3 piggyback exploration cryopump ready to be tested Not a very productive run. We had 5 shots (36, 39, 40, 44, 47) which made it into plasma current rampdown. The machine was incredibly dirty. Nevertheless, we got about 0.3MW into plasma from transmitter #4. We have also started looking at the relative phase between the two transmitters. Shot 01 fiz 02 fiz 03 pla disr 0.17s 04 pla disr 0.18s 05 pla disr 0.26s 06 pla disr 0.31s 07 pla disr 0.28s 08 pla disr 0.36s 09 fiz 10 dud 11 fiz 12 fiz 13 fiz 14 fiz 15 dud 16 fiz 17 fiz 18 pla disr 0.29s 19 fiz 20 pla disr 0.30s 21 pla disr 0.39s 22 pla disr 0.41s 23 pla disr 0.35s 24 pla disr 0.33s 25 fiz 26 pla disr 0.48s, Prf(4)=0.13MW 27 pla disr 0.37s 28 pla disr 0.30s, Prf(4)=0.22MW 29 pla disr 0.40s, Prf(4)=0.28MW 30 pla disr 0.40s, Prf(4)=0.28MW 31 pla disr 0.40s, Prf(4)=0.18MW 32 fiz 33 fiz 34 pla disr 0.40s, Prf(4)=0.15MW 35 fiz 36 pla lasted till 1.25s! Prf(4)=0.35MW 37 dud BT rampdown to 4T, He3 puff turned on 90V X 10ms 38 fiz 39 pla good shot 4T, 0.75MA, nel=1.0 Prf(3)=0.65 Prf(4)=0.35MW 40 pla Prf(3)=0.55MW 41 fiz 42 pla disr 0.48s 43 pla disr 0.48s 44 pla lasted till 1.4s Prf(3)=0.7MW 45 pla disr 0.48s 46 pla disr 0.34s 47 pla lasted till 1.4s Prf(3)=0.9MW |
| Physics Operator Summaries |
| Entered: Jul 7 2004 04:36:57:537PM |
| Author: To Be Determined |
| Physics operator summary for 970604 EO: Bertolino/Cochran/Terry PO: Goetz SL: Takase Run 970604 was in support of Mini-Proposal #170 - Restart Alcator C-Mod and #171 RF Conditioning. The goals for today are to try and produce good plasmas and get at least 1MW from each antenna. Plan: start with 970528044 and try to make plasmas until the day is over The goals were not reached today. Although some plasmas were produced, they were neither very good nor reproducible. The RF group did not reach 1MW out of each antenna although there was power launched. Plasmas today were very dirty with slow current rises, high loop voltage, high radiation. etc. Breakdowns, however, were quite robust with only three duds and a few other late breakdowns. The offset on RCUR in segment 1 was lowered to 6600 by the end of the day to help match the Bz ramp with the slow current ramp. Be wary of using this startup with a clean machine. Also, the drawn value of IP was adjusted over the day to try and match the actual value obtained during segment switch. In the beginning, only short plasmas were produced, and looked to be dominated by something other than deuterium. Minor disruptions were the rule for the first half of the run. Hydrogen fraction was also greater than the deuterium throughout the day. During OH1 crossover, the plasma would kiss the inner wall and not be able to handle the subsequent influx of junk. Ramping the CLEARIN fast enough but not too fast got through this dirt event. Late in the run, unexplained fueling events were occuring starting at about .25s. Changing the ramp rates of CLEARIN, RXL, and/or ZXL did not alleviate the problem. Densities were climbing as high as 2e20 with the gas turned off. Shot 047, which was a reload of an earlier shot did not have this problem. Considering the vacuum events of the previous week, this was not a bad run. problems. Engineering, computing, and diagnostics today: Over voltage the OH1 on a couple disruptions but other than that, a good engineering day. CAMAC highways performed well. A crash of DAIGLE caused some data from one shot to be lost as the servers didn't serve. Scorecard: 47 shots = 28 plasmas + 16 fizzles + 3 duds Shot summary for Run 970604: Load 970528044 coldstart hybrid - all matrices respond Br_0 offset = .007 PG4 = 24msec Shot change result ____ _____ ______ 1 see above fizzle; breakdown @ 5ms; null looks o.k. 2 PG4=18ms fizzle; breakdown @ 5.5ms; too much Br 3 BR_0 offset = .006 plasma; hard x-ray dominated; disrupts @ .16 breakdown @ 4ms; long hesitation in current rise 4 BR_0 offset = .0063; PG4=22ms plasma; very dirty; Vsurf > 5V; disrupts @ .17 breakdown @ 4.5ms; less hesitation in current rise 5 PG4=24ms plasma; very dirty; Vaxis > 4V; disrupts @ .25 breakdown @ 5ms; hesitation almost gone 6 no changes plasma; very dirty; Vaxis > 6V; disrupts @ .31s breakdown @ 5ms; slight hesitation 7 IP point @ .1s = -400000A plasma; dirty; Vaxis > 5V; disrupts @ .28s breakdwon @ 5ms; slight hesitation 8 IP @ .1s = -3500000 plasma; dirty; Vaxis ~ 6V; disrupts @ .36s breakdown @ 6ms; no hesitation 9 IP=-600000A during flattop fizzle; breakdown @ 6ms; null looks good; Bz a little late 10 PG4=22ms; IC_EF4=-1305A dud!; null looks o.k. 11 IC_EF4=-1315A; RCUR offset fizzle; CII light = .005; null looks o.k. =7000 12 PG4 = 16ms fizzle; CII light = .003; breakdown @ 5ms; bounces many times 13 RCUR offset = 7100 fizzle; CII light=.003; breakdown @ 5ms; bounces many times 14 reload 970604008; IP=-600000 fizzle; CII light=.005; breakdown @ 6ms; bounces many times 15 PG4=14ms dud; fields look o.k.; not enough gas? 16 PG4=20ms; BR_0=.0068 fizzle; breakdown @ 6.5ms; Bz in too late? 17 RCUR offset = 6800 fizzle; breakdown @ 6ms; 18 RCUR offset = 6700 plasma; disrupts @ .29; Vloop < 2V; many minor disruptions breakdown @ 6ms; CII light = .004 19 slow down CLEARIN ramp early fizzle; breakdown @ 12ms; null looks o.k. early 20 no changes plasma; disupts @ .30s; Vloop < 2V; many minor disruptions breakdown @ 6ms; CII light = .006 21 no changes plasma; disrupts @ .39s; Vloop > 5V; b.d @ 6ms; CII = .006 22 no changes plasma; disrupts @ .41s; Vloop > 4V; b.d. @ 8ms; CII=.006 23 PG4=22ms plasma; disrupts @ .35s; Vloop ~2.5V; b.d. @ 6ms; CII=.007 24 delay TF ramp 100ms plasma; disrupts @ .33s; Vloop ~2.2V; b.d. @ 5ms; CII=.006 25 IP=-700000 fizzle; breakdown @ 5ms; multiple bounces; CII=.005 26 RCUR offset = 6600 plasma; disrupts @ .48s; injection @ .45s; b.d. @ 8ms; CII=.005 27 delay TF ramp until 0.5s plasma; disrupts @ .37; dirtier than 26; b.d. @ 6ms; CII=.008 28 IP=-800000 plasma; disrupts @ .3; fueling from somewhere; b.d. @ 6ms; CII=.008 29 IP=-600000 plasma; disrupts @ .39; rampdown @ .22s; b.d. @ 6ms; CII=.01 30 IP=-700000; PG4=20ms plasma; disrupts @ .40; rampdown @ .17s; b.d. @ 5ms; CII=.008 31 IP=-325000 at seg; PG4=18ms plasma; disrupts @ .39; rampdown @ .21s; b.d. @ 6ms; CII=.007 32 PG4=16ms; less PG3 early fizzle; breakdown @ 10ms; CII = .012 33 PG4=24ms fizzle; breakdown @ 8ms; CII=.008 34 PG4=22ms plasma; disrupts @ .49; rampdown @ .43; b.d. @ 6ms; CII=.007 35 CLEARIN ramp faster (.35s) fizzle; breakdown @ 11ms; too much Br; CII=.009 36 no changes plasma; disrupts @ 1.25; b.d. @ 7ms; CII=.007 37 [90Vx10ms]@.7s on PG2; dud; fields look somewhat acceptable IP=-750000; TF=-11300 38 PG2 to .5s fizzle; b.d. @ 16ms; too much Br and Bz in too early 39 BR_0 offset=.0063; IC_EF4=-1325 plasma; disrupts@1.34s; injection @ .54s; b.d. @ 6ms; CII=.006 40 TF current = -105000 plasma; disrupts @ 1.44; early rub; b.d. @ 6ms; CII=.008 41 TF current = -107500 fizzle; Br a little too positive; b.d. @ 6ms; CII=.01 42 BR_0 offset = .006 plasma; disrupts @ .48; b.d. @ 7ms; CII=.006 43 move RXL earlier plasma; disrupts @ .48; b.d. @ 5ms; CII=.008 44 faster CLEARIN ramp (.32s) plasma; disrupts @ 1.42; b.d. @ 6ms; CII=.008 45 slower CLEARIN ramp (.38s) plasma; disrupts @ .48; b.d. @ 6ms; CII=.009 46 faster CLEARIN ramp (.28s) plasma; disrupts @ .34; b.d. @ 6ms; CII=.008 47 reload 970604044 plasma; disrupts @ 1.46; nice shot; b.d @ 6ms; CII=.009 |
| Session Leader Comments | |||
| Jun 4 1997 08:48:50:060AM | Yuichi Takase | MP171A 40MHz testing/conditioning Transmitters #3 and #4 ready (1MW into dummy load) Top priority: RF power into plasma at a level of 1MW from each transmitter. MP178 MCCD D-He3 piggyback exploration cryopump ready to be tested | |
| Jun 4 1997 08:58:13:030AM | 970604001 | Yuichi Takase | Fizzle |
| Jun 4 1997 08:58:33:410AM | 970604002 | Yuichi Takase | Fizzle |
| Jun 4 1997 09:11:08:930AM | 970604003 | Yuichi Takase | Plasma HX, disrupt @ 0.17s |
| Jun 4 1997 09:28:47:010AM | 970604004 | Yuichi Takase | Plasma disrupt @ 0.18s |
| Jun 4 1997 09:32:02:960AM | 970604005 | Yuichi Takase | Plasma disrupt @ 0.26s |
| Jun 4 1997 09:55:19:810AM | 970604006 | Yuichi Takase | Plasma disrupt @ 0.31s |
| Jun 4 1997 09:55:33:100AM | 970604007 | Yuichi Takase | Plasma disrupt @ 0.28s |
| Jun 4 1997 10:02:21:410AM | 970604008 | Yuichi Takase | Plasma disrupt @ 0.36s move RF#4 earlier for next shot |
| Jun 4 1997 10:48:33:380AM | 970604009 | Yuichi Takase | Fizzle |
| Jun 4 1997 10:48:51:150AM | 970604010 | Yuichi Takase | Dud |
| Jun 4 1997 10:49:05:230AM | 970604011 | Yuichi Takase | Fizzle |
| Jun 4 1997 11:25:32:490AM | 970604012 | Yuichi Takase | Fizzle |
| Jun 4 1997 11:25:48:310AM | 970604013 | Yuichi Takase | Fizzle |
| Jun 4 1997 11:26:00:380AM | 970604014 | Yuichi Takase | Fizzle |
| Jun 4 1997 11:26:13:620AM | 970604015 | Yuichi Takase | Dud |
| Jun 4 1997 11:26:26:760AM | 970604016 | Yuichi Takase | Fizzle |
| Jun 4 1997 12:13:01:650PM | 970604017 | Yuichi Takase | Fizzle |
| Jun 4 1997 12:13:22:940PM | 970604018 | Yuichi Takase | Plasma disrupt @ 0.29s |
| Jun 4 1997 12:13:35:280PM | 970604019 | Yuichi Takase | Fizzle |
| Jun 4 1997 12:13:55:510PM | 970604020 | Yuichi Takase | Plasma disr @ 0.30s |
| Jun 4 1997 12:43:23:030PM | 970604021 | Yuichi Takase | Plasma disr @ 0.39s |
| Jun 4 1997 12:43:40:950PM | 970604022 | Yuichi Takase | Plasma disr @ 0.41s |
| Jun 4 1997 12:43:52:890PM | 970604023 | Yuichi Takase | Plasma disr @ 0.35s |
| Jun 4 1997 01:03:37:970PM | 970604024 | Yuichi Takase | Plasma disr @ 0.33s |
| Jun 4 1997 01:04:54:330PM | 970604025 | Yuichi Takase | Fizzle |
| Jun 4 1997 01:26:33:790PM | 970604026 | Yuichi Takase | Plasma disrupt @ 0.48s Prf(4)=0.13MW |
| Jun 4 1997 01:31:39:640PM | 970604027 | Yuichi Takase | Plasma disrupt @ 0.37s |
| Jun 4 1997 02:41:51:640PM | 970604028 | Yuichi Takase | Plasma disrupt @ 0.30s Prf(4)=0.22MW |
| Jun 4 1997 02:42:11:540PM | 970604029 | Yuichi Takase | Plasma disrupt @ 0.40s Prf(4)=0.28MW |
| Jun 4 1997 02:42:31:310PM | 970604030 | Yuichi Takase | Plasma disrupt @ 0.40s Prf(4)=0.28MW |
| Jun 4 1997 02:42:44:240PM | 970604031 | Yuichi Takase | Plasma disrupt @ 0.40s Prf(4)=0.18MW |
| Jun 4 1997 02:43:00:050PM | 970604032 | Yuichi Takase | Fizzle |
| Jun 4 1997 02:43:12:000PM | 970604033 | Yuichi Takase | Fizzle |
| Jun 4 1997 02:43:47:700PM | 970604034 | Yuichi Takase | Plasma disrupt @ 0.40s Prf(4)=0.15MW |
| Jun 4 1997 04:54:08:770PM | 970604035 | Yuichi Takase | Fizzle |
| Jun 4 1997 04:54:41:440PM | 970604036 | Yuichi Takase | Plasma lasted till 1.25s! Prf(4)=0.35MW |
| Jun 4 1997 04:55:06:420PM | 970604037 | Yuichi Takase | Dud |
| Jun 4 1997 04:55:20:500PM | 970604038 | Yuichi Takase | Fizzle |
| Jun 4 1997 04:56:13:640PM | 970604039 | Yuichi Takase | Plasma good shot 4T, 0.75MA, nel=1.0 Prf(3)=0.65 Prf(4)=0.35MW BT rampdown to 4T, He3 puff turned on 90V X 10ms |
| Jun 4 1997 04:56:32:920PM | 970604040 | Yuichi Takase | Plasma Prf(3)=0.55M |
| Jun 4 1997 04:56:47:390PM | 970604041 | Yuichi Takase | Fizzle |
| Jun 4 1997 04:57:21:560PM | 970604042 | Yuichi Takase | Plasma disruption @ 0.48s |
| Jun 4 1997 04:57:36:480PM | 970604043 | Yuichi Takase | Plasma disruption @ 0.48s |
| Jun 4 1997 04:57:55:820PM | 970604044 | Yuichi Takase | Plasma lasted till 1.4s Prf(3)=0.7MW |
| Jun 4 1997 04:58:26:070PM | 970604045 | Yuichi Takase | Plasma disrupt @ 0.48s |
| Jun 4 1997 04:58:39:360PM | 970604046 | Yuichi Takase | Plasma disrupt @ 0.34s |
| Jun 4 1997 06:04:01:320PM | 970604047 | Yuichi Takase | Plasma lasted till 1.4s Prf(3)=0.9MW |
| Physics Operator Comments | |||
| Jun 4 1997 08:26:57:810AM | John Goetz | Run 970604
In support of miniproposals #170 Restart C-Mod and #171 RF Conditioning Goals: 170: Obtain reproducible plasmas for diagnostic checkout and alignment 171: Launch greater than 1MW from each antenna into the plasma Method: Load shot 970528044, which is a TF rampdown shot, and keep trying until the above goals are accomplished. | |
| Jun 4 1997 08:48:22:230AM | 970604001 | John Goetz | Shot 970604001:
Load 970528044 PG4 = 24msec BR_0 offset = .007 Results: Fizzle breakdown at 5msec; null looks o.k. |
| Jun 4 1997 08:59:23:710AM | 970604002 | John Goetz | Shot 970604002:
PG4 = 18msec Results: fizzle breakdown @ .0055s too much radial field at t=0 CII light = .013 units |
| Jun 4 1997 09:08:34:120AM | 970604003 | John Goetz | Shot 970604003:
BR_0 offset = .006 Results: Plasma breakdown @ .004; CII light = .004 units all hard x-rays; very dirty disrupts @ .16s |
| Jun 4 1997 09:21:34:990AM | 970604004 | John Goetz | Shot 970604004:
BR_0 offset = .0063 PG4 = 22ms Results: Plasma breakdown @ .004; CII light = .007 units no hard x-rays; very dirty; Vsurf > 5V; disrupts @ .17s |
| Jun 4 1997 09:30:31:960AM | 970604005 | John Goetz | Shot 970604005:
PG4 = 24ms Results: plasma; minor disruption @ .11s; all over @ .25s very dirty; Vaxis > 4V; 2.5MW spikes on 2pi breakdown @ .005; current rise hesitation almost gone |
| Jun 4 1997 09:39:34:700AM | 970604006 | John Goetz | Shot 970604006:
no changes Results: plasma; final disruption @ .31s; still dirty; Vaxis > 6V breakdown @ 5ms; slight hesitation in current rise |
| Jun 4 1997 09:55:00:460AM | 970604007 | John Goetz | Shot 970604007:
draw point in IP waveform @ .1s to -400000A to try and match the current rise being achieved Results: plasma; final disruption @ .28s; Vaxis > 5V breakdown @ .005; still a current hesitation |
| Jun 4 1997 10:02:17:060AM | 970604008 | John Goetz | Shot 970604008:
draw point in IP waveform @ .1s to -350000A to try and match the current rise being achieved lower NL_04 a bit to keep the gas off Results: plasma; mismatch of plasma current @ segment switch almost gone Vaxis ~ 6V; disrupts @ .36s breakdown @ 6ms; current hesitation gone |
| Jun 4 1997 10:14:18:770AM | 970604009 | John Goetz | Shot 970604009:
draw IP waveform to -600000A during flattop to save Volt-sec Results: fizzle; breakdown @ 6ms; null looks o.k. but Bz is coming in a little bit late. |
| Jun 4 1997 10:38:00:740AM | 970604010 | John Goetz | Shot 970604010:
PG4 = 22ms; IC_EF4 = -1305A Results: Dud; null looks o.k. |
| Jun 4 1997 10:47:57:450AM | 970604011 | John Goetz | Shot 970604011:
IC_EF4 = -1315A; RCUR offset = 7000 Results: fizzle; CII light = .005 |
| Jun 4 1997 10:55:23:040AM | 970604012 | John Goetz | Shot 970604012:
PG4 = 16ms; put on your lead jockies; this baby will go Results: fizzle; breakdown @ 5ms; bounces multiple times |
| Jun 4 1997 11:06:06:750AM | 970604013 | John Goetz | Shot 970604013:
RCUR offset = 7100 (to bring Bz in faster) Results: fizzle breakdown @ 5ms; null looks o.k.; multiple bounces |
| Jun 4 1997 11:12:12:860AM | 970604014 | John Goetz | Shot 970604014:
reload shot 970604008 IP = -600000 for flattop Results: fizzle breakdown @ 6ms; null o.k.; many bounces |
| Jun 4 1997 11:21:07:040AM | 970604015 | John Goetz | Shot 970604015:
PG4 = 14ms Results: Dud Fields are o.k., probably not enough gas |
| Jun 4 1997 11:30:54:990AM | 970604016 | John Goetz | Shot 970604016:
BR_0 offset = .0068 PG4 = 20ms Results: fizzle breakdown @ 6.5ms; bounces; Bz in too late? |
| Jun 4 1997 11:40:18:680AM | 970604017 | John Goetz | Shot 970604017:
RCUR offset = 6800 Results: fizzle not much of a bounce; breakdown @ 6ms |
| Jun 4 1997 11:52:12:090AM | 970604018 | John Goetz | Shot 970604018:
RCUR offset = 6700 Results: plasma disrupts at .29s; many, many minor disruptions vertical problem late; very skinny plasma loop voltage dropping throughout this shot! breakdown @ 6ms; CII light = .004 |
| Jun 4 1997 12:00:30:390PM | 970604019 | John Goetz | Shot 970604019:
slow down initial CLEARIN ramp Results: fizzle breakdown @ 12ms?!?!? null looks o.k. early on |
| Jun 4 1997 12:10:10:120PM | 970604020 | John Goetz | Shot 970604020:
try again - no changes Results: plasma; disrupts @ .30s; many minor disruptions along the way breakdown @ 6ms; fields look the same as 019 |
| Jun 4 1997 12:18:11:970PM | 970604021 | John Goetz | Shot 970604021:
try again - no changes Results: plasma; begins ramping down @ .125s; disrupts @ .39s breakdown @ 6ms; CII light = .006 Vaxis > 5V; another dirty one |
| Jun 4 1997 12:30:23:450PM | 970604022 | John Goetz | Shot 970604022:
try again - no changes Results: plasma; disrupts @ .41s; begins ramping down .15s; Vloop = 4V breakdown @ 8ms; slight hesitation; CII = .006 |
| Jun 4 1997 12:41:56:660PM | 970604023 | John Goetz | Shot 970604023:
PG4 = 22ms delay TF ramp 100ms Results: plasma disrupts @ .35s; begins rampdown @.31s during OH1 crossover breakdown @ 6ms; CII light = .007 Vloop ~ 2.5V |
| Jun 4 1997 12:54:01:280PM | 970604024 | John Goetz | Shot 970604024:
delay TF ramp 100ms in segment 2 this time Results: plasma disrupts @ .33; begins rampdown @ .21; Vloop = 2.2V breakdown @ 5ms; CII = .006 |
| Jun 4 1997 01:01:29:600PM | 970604025 | John Goetz | Shot 970604025:
IP = -700000 Results: fizzle breakdown @ 5ms; null looks o.k.; CII = .005 |
| Jun 4 1997 01:14:52:440PM | 970604026 | John Goetz | Shot 970604026:
RCUR offset = 6600 Results: plasma disrupts @ .48; gaps go to 0 @ .42s; injection event @ .45s Vloop down to 1.5V!!! breakdown @ 8ms; good current rise; CII = .005 |
| Jun 4 1997 01:24:43:370PM | 970604027 | John Goetz | Shot 970604027:
delay TF ramp until .5s Results: plasma disrupts @ .37; a little more Vloop; dirtier than 026 breakdown @ 6ms; CII = .008 |
| Jun 4 1997 01:31:31:260PM | 970604028 | John Goetz | Shot 970604028:
IP = -800000 Results: plasma disrupts @ 0.3s; fueling going on from somewhere breakdown @ 6ms; CII = .008 |
| Jun 4 1997 01:41:37:220PM | 970604029 | John Goetz | Shot 970604029:
IP = -600000 Results: plasma disrupts @ .39s; minor disruption @ .17; ramp down @ .22s breakdown @ 6ms; CII=.01; current hesitation |
| Jun 4 1997 01:52:50:440PM | 970604030 | John Goetz | Shot 970604030:
IP = -700000 PG4 = 20ms Results: plasma disrupts @ .40; rampdown @ .17; gets in trouble at segment switch breakdown @ 5ms; CII = .008 |
| Jun 4 1997 02:01:11:160PM | 970604031 | John Goetz | Shot 970604031:
IP = -325000 at segment switch PG4 = 18ms Results: plasma disrupts @ .39; rampdown @ .21s; many, many minor disruptions breakdown @ 6ms; CII = .007; slight hesitation in current |
| Jun 4 1997 02:10:40:490PM | 970604032 | John Goetz | Shot 970604032:
PG4 = 16ms remove some PG3 early Results: fizzle breakdown @ 10ms; CII = .012 |
| Jun 4 1997 02:38:26:840PM | 970604033 | John Goetz | Shot 970604033:
PG4 = 24ms Results: fizzle breakdown @ 8ms; CII=.008 |
| Jun 4 1997 02:37:22:470PM | 970604034 | John Goetz | Shot 970604034:
PG4 = 22ms Results: plasma disrupts @ .49; rampdown @ .43; OH1 crossover problem - plasma jumps in breakdown @ 6ms; CII = .006 |
| Jun 4 1997 02:53:02:990PM | 970604035 | John Goetz | Shot 970604035:
CLEARIN ramp faster (get the plasma farther away from the inner wall) Results: fizzle breakdown @ 11ms; a little too much Br; CII = .009 |
| Jun 4 1997 03:10:10:240PM | 970604036 | John Goetz | Shot 970604036:
no changes Results: plasma disrupts @ 1.25; a much better shot as far as these things go some unknown fueling mechanism going on breakdown @ 7ms; CII=.007; current rise hesitation |
| Jun 4 1997 03:22:41:950PM | 970604037 | John Goetz | Shot 970604037:
[90V x 10ms] @ 0.7s on PG2 (He-3) IP = -750000 TF = -113000 (4T); ramp from 0.3 to 0.55s Results: DUD! fields don't look too bad |
| Jun 4 1997 03:30:54:070PM | 970604038 | John Goetz | Shot 970604038:
[90V x 10ms] @ 0.5s on PG2 (He-3) IP = -750000 TF = -113000 (4T); ramp from 0.3 to 0.55s Results: fizzle breakdown @ 16ms; Br too positive and Bz in too early |
| Jun 4 1997 03:55:24:230PM | 970604039 | John Goetz | Shot 970604039:
[90V x 10ms] @ 0.5s on PG2 (He-3) IP = -750000 TF = -113000 (4T); ramp from 0.3 to 0.55s BR_0 offset = .0063 IC_EF4 = -1325A Results: plasma disrupts @ 1.34; injection @ .54 breakdown @ 6ms; CII=.006 |
| Jun 4 1997 03:56:39:220PM | 970604040 | John Goetz | Shot 970604040:
TF current = -105000 Results: plasma disrupts @ 1.44; rubs somewhere early; almost didn't make it breakdown @ 6ms; CII=.008 |
| Jun 4 1997 04:08:04:180PM | 970604041 | John Goetz | Shot 970604041:
TF current = -107500 Results: fizzle breakdown @ 6ms; many bounces and retries Br a little too positive |
| Jun 4 1997 04:18:46:610PM | 970604042 | John Goetz | Shot 970604042:
TF current = -107500 BR_0 offset = .006 Results: plasma disrupts @ .48; same fueling as on 040, but this time the excess gas wins breakdown @ 7ms; CII=.006 |
| Jun 4 1997 04:31:16:600PM | 970604043 | John Goetz | Shot 970604043:
move RXL out earlier Results: plasma disrupts @ .48s; same fueling phenomenon as 042; definitely not from the gas system breakdown @ 5ms; CII = .008 |
| Jun 4 1997 04:40:22:750PM | 970604044 | John Goetz | Shot 970604044:
speed up CLEARIN ramp (.32s) Results: plasma disrupts @ 1.42; fueling event, but makes it through @ .43 breakdown @ 6ms; CII = .008 |
| Jun 4 1997 04:47:11:870PM | 970604045 | John Goetz | Shot 970604045:
slow down CLEARIN ramp (.38s) Results: plasma disrupts @ .48; fueling event begins @ .27s breakdown @ 6ms; CI = .009 |
| Jun 4 1997 04:55:43:330PM | 970604046 | John Goetz | Shot 970604046:
speed up CLEARIN ramp (.28s) Results: plasma disrupts @ .34; pulling too fast on the CLEARIN breakdown @ 6ms; CII =.008 |
| Jun 4 1997 05:01:45:930PM | 970604047 | John Goetz | Shot 970604047:
reload 970604044 Results: plasma disrupts @ 1.46s; no fueling event this time; nice clean shot breakdown @ 6ms; CII = .009 |
| Engineering Operator Comments | ||||
| Shot | Time | Type | Status | Comment |
| 1 | 08:37:10:650AM | Plasma | Ok | |
| 2 | 08:51:01:070AM | Plasma | Ok | |
| 3 | 09:00:40:990AM | Plasma | Ok | |
| 4 | 09:12:32:450AM | Plasma | Ok | |
| 5 | 09:23:14:980AM | Plasma | Ok | |
| 6 | 09:32:53:030AM | Plasma | Ok | |
| 7 | 09:43:09:880AM | Plasma | Ok | |
| 8 | 09:55:19:980AM | Plasma | Ok | |
| 9 | 10:05:55:150AM | Plasma | Ok | |
| 10 | 10:30:05:570AM | Plasma | Ok | |
| 11 | 10:40:00:330AM | Plasma | Ok | |
| 12 | 10:49:52:600AM | Plasma | Ok | |
| 13 | 10:58:07:510AM | Plasma | Ok | |
| 14 | 11:06:53:700AM | Plasma | Ok | |
| 15 | 11:15:09:330AM | Plasma | Ok | |
| 16 | 11:22:09:220AM | Plasma | Ok | |
| 17 | 11:31:37:290AM | Plasma | Ok | |
| 18 | 11:41:29:720AM | Plasma | Ok | |
| 19 | 11:53:28:690AM | Plasma | Ok | |
| 20 | 12:01:43:680PM | Plasma | Ok | |
| 21 | 12:11:46:130PM | Plasma | Ok | |
| 22 | 12:20:39:610PM | Plasma | Ok | |
| 23 | 12:31:07:340PM | Plasma | Ok | oh1 fault self powerd ckt fault |
| 24 | 12:45:16:770PM | Plasma | Ok | |
| 25 | 12:55:48:930PM | Plasma | Ok | |
| 26 | 01:03:56:810PM | Plasma | Ok | |
| 27 | 01:15:29:980PM | Plasma | Ok | |
| 28 | 01:25:49:210PM | Plasma | Ok | |
| 29 | 01:34:43:220PM | Plasma | Ok | |
| 30 | 01:44:34:920PM | Plasma | Ok | |
| 31 | 01:55:21:180PM | Plasma | Ok | |
| 32 | 02:05:27:170PM | Plasma | Ok | |
| 33 | 02:12:24:070PM | Test | Bad | |
| 34 | 02:27:06:050PM | Plasma | Ok | |
| 35 | 02:48:08:580PM | Plasma | Ok | |
| 36 | 02:54:23:950PM | Plasma | Ok | |
| 37 | 03:12:55:090PM | Plasma | Ok | |
| 38 | 03:24:02:870PM | Plasma | Ok | |
| 39 | 03:33:03:630PM | Plasma | Ok | |
| 40 | 03:48:06:820PM | Plasma | Ok | |
| 41 | 04:01:08:060PM | Plasma | Ok | |
| 42 | 04:11:14:670PM | Plasma | Ok | |
| 43 | 04:20:41:320PM | Plasma | Ok | |
| 44 | 04:32:12:660PM | Plasma | Ok | |
| 45 | 04:41:52:670PM | Plasma | Ok | |
| 46 | 04:50:33:520PM | Plasma | Ok | |
| 47 | 04:56:47:170PM | Plasma | Ok | |