| Miniproposals | ||||||||||||
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| Operators | |
| Session leader(s): | Alexandre Parisot,Alexandre Parisot,Alexandre Parisot |
| Physics operator(s): | Steve Wolfe |
| Engineering operator(s): | Bill Cochran,Sam Pierson,Bill Parkin |
| Engineering Operator Run Comment |
| MP#447 MCCD during current rampup |
| Session Leader Plans |
| Entered: Jun 19 2006 04:59:58:170PM |
| Author: Alexandre Parisot |
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MP#447 MCCD experiments during ramp-up Session leader: Parisot Physics operator: Wolfe This is a continuation of last Wednesday's run. We will assess the status of the two problems we encountered last Wednesday: the pickup on magnetics and J-port performance, and investigate these problems further. Depending on the results, we will try to get some physics following the plan in the MP: 1] Start with 1060614031. While bringing J-port up in power and monitoring electron heating, bring the density down by reducing the D and 3He puffs. A good target is nl04 < 0.7 x 10^19 m^-2 2] Scan phasing [co, counter and heating] and monitor changes in magnetics and sawtooth onset time. 3] With ~ 3 MW from D and E, obtain Alfven cascade activity on PCI, then add power from J-port and scan phasing [co, counter and heating]. |
| Physics Operators Plans |
| Entered: Jun 19 2006 06:04:38:757PM |
| Author: Steve Wolfe |
Engineering setup and Physop plan for Tuesday, 20-Jun-2006 ----------------------------------------------------------- MP#447 MCCD during current rampup SL: Parisot PO: Wolfe ECDC overnight in D2 at 2e-4Torr Power Systems as on 1060614031 Acoil configuration standard: +Dtop -Dbot -Jtop +Jbot, enabled Gas setup: ---------- fill B-top with 6psi D2, hybrid enabled (PG4) fill B-side lower with 1psi Argon + 1psi Neon, hybrid DISABLED (PG1) leave B-side upper with 15psi He3, hybrid ENABLED (PG2) fill B-main with 40psi D2, hybrid ENABLED (PG3) fill NINJA with 10psi D2, Disabled Enable VUV, ECE, Zbolo shutter (assuming no vacuum problems) Do not enable DNB gate valve. TORVAC gate valves open during pulse FMIT#1,2,3,4 in RUN-ON by 08:30 Plan ---- Load 1060614031 (800kA, 5e19, upper null, short current pulse, in seg4) Set PG2 puff to total 120msec (Seg1 and seg4) Fix B21_PROJ/Acoil_cur programming in Seg4 (integrator timing, zero ACOIL_CUR feedforward) NOTE: Leave fizzle detector gate at 1.8sec, so we'll force reverse oh swings after these short low-density shots. Ian was finding he needed Br0=-1mT, which may be consistent with the no-f11 predictors. We'll also probably need to play a little with Bz rise rate. See SL_PLAN for remainder of run plan. |
| Session Leader Summaries |
| Entered: Jun 20 2006 05:30:26:770PM |
| Author: Alexandre Parisot |
| The pickup problems from last Wednesday were not encountered during this run, and
we devoted the first part of the run to loop voltage comparisons. J-port ran well at 2.2 MW, with low densities (nl04 ~ 0.6) and Zeff < 3 initially. However, after one or two shots at high power, Zeff was at 6 and the radiated power was such that we could not raise the temperature above 4 keV with 4 MW RF. These conditions are not favorable for net current drive, and not any better than in the experiments last summer. Therefore we decided to abandon MP#356 for now. On the current ramp-up experiments (MP#447), we were able to obtain very good central heating (Te up to 6 keV) with ~ 3 MW from D&E and 2 MW from J-port. In these conditions, we had good comparison discharges between co- and counter-current drive. However, we did not observe Alfven cascade activity on the PCI, even with 2.8 MW from D&E or when matching the plasma parameters from prior sucessfull Alfven cascade experiments in 2004. Initial analysis of the comparison discharges showed little or no differences in the loop evolution or internal inductance between co- and current drive during ramp-up. Some differences were observed in the onset and characteristics of sawtooth oscillations, and will be investigated further. |
| Physics Operator Summaries |
| Entered: Jun 20 2006 06:11:07:907PM |
| Author: Steve Wolfe |
Physop summary for Tuesday, 20-Jun-2006 MP#447 MCCD during current ramp (with a small diversion into MP#356 MCCD during flattop) SL: Parisot PO: wolfe The machine and RF ran pretty well today, though it's not clear that the physics cooperated. Evidence for current drive was, IMHO, pretty slim, although Wukie thinks that the sawtooth changes were well-correlated with the J phasing. See the SL_SUMMARY for details. The major operational questions going into the run were whether we could get high power from J-port at 50MHz and if the pickup observed last week on the magnetics and other signals was gone. Today there seemed to be no problem getting the J-port power up to 2 to 2.5MW, and the pickup was completely absent. It is not clear why in either case, but the RF group did add capacitance to the DC break and did some RF glow (multipactor), which may have helped. We started with the setup of the last shot from 1060614031, with the early He3 puff changed to 120msec, and quickly noted that the RF pickup was gone. For shot 3 we reloaded 1060614012, which was a 600kA flattop MCCD case, and confirmed that the pickup on the magnetics was also gone in this case. We then spent a couple of hours revisiting the MP#356 shots, looking for changes in loop voltage. These shots were somewhat disruptive, but the RF performed well, and we did some variation in the He3 puff and phasing. There were, however, no obvious changes in loop voltage that might be indicative of MCCD. At shot 9 we went back to the current ramp study, trying to get a case with Alfven cascades that would be sensitive to changes in the q profile. While the RF was successful in injecting as early as 0.1sec, and in a few cases even earlier, we did not observe any cascade modes in this sequence. The density may have been too high, and we tried eliminating the PG3 puff in segment 1, and eventually even turned off the He3 puff, and the J-port pulse, in an effort to recover the conditions for the cascades. It was pointed out that the cascade "trophy shot" 1040406018 had a somewhat faster current rise than we were getting, so we also tried to increase the Ip ramp. On shots #21 and 22 I turned on Ip feedback in segment 1 (see logbook for the settings) beginning at .06 seconds, and was somewhat successful in increasing the current at 0.1 sec from 505ka to 575ka, which was close to the value on 1040406018, but PCI still did not observe any cascades. The use of Ip feedback in segment 1 may prove useful for other experiments, and did not seem to result in any problems. There was still some headroom on the gain, and I did not try turning on derivative gain, which might have helped as well. The power supply demands did not seem to be out of range for a P gain=4.0. For shot#23 we reloaded from #14 and concentrated on sawtooth changes as the prime indicator of current drive. The remainder of the run was done with total power approaching 5MW, and essentially every shot disrupted by about 0.5sec. There were obvious injections from the J antenna corner and elsewhere, and increasing Prad that looked like local heating rather than discrete events. Since the power was not that much higher than in shots #9-16, it is not clear why the disruptivity was so much higher, unless we were actually ratcheting the temperature somewhere. At first I thought the disruptions might be related to OH1 crossover or to the Ip gain switch (which I moved later), but this turns out not to be the case. Startups were quite robust, with only one fizzle (#19) and one hard runaway shot (#29). As was the case last week, early He3 puffing was no problem, with the possible caveat that the early density could not be reduced below about 6e19; however, some of this density was probably due to the early RF rather than the puff. The main change to the startup today was to increase the RCUR offset from 1600 to 2000, in order to increase the Bz ramp rate. This seemed to be successful. Aside from that, I made a small tweak to EF4 early in the day, and made minor tweaks to the PG4 puff in response to runaways and disruptions. While the current drive was hard to find, the heating in these discharges was quite impressive, with Te0 up to 6keV on many shots before the start of sawtoothing. Amanda points out that the peak temperature was typically around 0.70m, about 2cm outside the EFIT "RMAGX", which is not unreasonable considering the EFIT limitations on the q0 and profile functions. Scorecard: ----------- Tests 0 Duds 0 Fizzles 1 Plasmas 30 ======== == Shots 31 |
| Session Leader Comments | |||
| Jun 20 2006 09:19:02:320AM | 1060620001 | Alexandre Parisot | J-port ran 1.1 MW. D and E faulted out (mismatched).
No pickup from J-port (heating phase). FRC-ECE is not working. Next: Lower D puff during segment 1 to get lower nl04. Go to counter-current drive. |
| Jun 20 2006 10:03:48:963AM | 1060620002 | Alexandre Parisot | J-port ran, no pickup. D and E are here too.
FRC-ECE data is offset, seems to trigger at 1 sec. Next: Load 1060614012 to see if pickup is there. |
| Jun 20 2006 10:02:04:463AM | 1060620003 | Alexandre Parisot | Disrupted at 1.13 sec. J ran to 2.5 MW, heating phase.
FRC-ECE is back. We're in business for loop voltage physics ! Not seeing much electron heating though. Next: 3He puff duration to 200 ms. |
| Jun 20 2006 10:09:52:840AM | 1060620004 | Alexandre Parisot | Disrupted at 0.6sec. |
| Jun 20 2006 10:14:44:110AM | 1060620004 | Alexandre Parisot | Disrupted at 0.6sec.
Since the pickup is apparently gone, we'll spend a couple of shots on MP#356. The conditions are not optimal (no boronization) but Zeff ~ 2.5 and ne0 ~ 1.4 x 10^20 m^-3, which is good. We'll do some phasing scans after making sure the 3He concentration is right. After this, we'll switch back to MP#447. |
| Jun 20 2006 10:34:29:273AM | 1060620005 | Alexandre Parisot | Disrupted at 1.08sec. J-port ran with programmed notches.
The 3He monitor has less signal than last Wednesday, any problem with the valve ? Next. Try turning the valve on by 150ms, i.e [150-400ms] |
| Jun 20 2006 10:47:34:590AM | 1060620006 | Alexandre Parisot | Looks like the 3He is making it in. The break-in-slope data is clearer this time.
Concentration estimate is ~ 20 %. Next: Ramp D&E to 2MW to figure out the H-mode threshold (we want to stay right below it). Lower puff time by 50 ms. |
| Jun 20 2006 11:19:35:853AM | 1060620008 | Alexandre Parisot | J-port will not run above 2 MW, the radiated power is very high.
Looks like we will not go anywhere with the loop voltage measurements. Next: Go back to the ramp-up experiments. |
| Jun 20 2006 11:33:46:127AM | 1060620009 | Alexandre Parisot | Good starting point for ramp-up studies. 1.5 MW from J-port, 2 from D&E.
Density goes up to nl04 = 0.8 Some hints of faint activity on the PCI. Next: Raise power. |
| Jun 20 2006 11:54:43:537AM | 1060620010 | Alexandre Parisot | E struggled. Nothing on the PCI.
J-port (co-current drive) 2 faults early, match is good. Next: Add notches to J-port after 0.4 sec, go to opposite phasing. |
| Jun 20 2006 12:08:51:257PM | 1060620011 | Alexandre Parisot | Good shot.
Next: Opposite phasing again. |
| Jun 20 2006 12:19:33:950PM | 1060620012 | Alexandre Parisot | High voltage fault on J after 220 ms.
J-port co-current drive. Next: Repeat. More power from D and E. |
| Jun 20 2006 12:36:14:870PM | 1060620013 | Alexandre Parisot | Good shot. J-port ran to 350 ms.
Very faint data on the PCI: is the density too high ? Next: Opposite phasing. |
| Jun 20 2006 12:51:08:480PM | 1060620014 | Alexandre Parisot | Good shot. -90deg. Very good comparison with shot 13.
Next: Raise power from D&E. |
| Jun 20 2006 01:02:27:227PM | 1060620015 | Alexandre Parisot | Still nothing on the PCI. We need a slower nl04 rise.
Next: No D puff in segment 1, puff 3He [0-100ms] |
| Jun 20 2006 01:16:46:563PM | 1060620016 | Alexandre Parisot | Density did not go down.
Next: Lower 3He puff to 50 ms. |
| Jun 20 2006 01:19:53:927PM | 1060620016 | Alexandre Parisot | Density did not go down.
Next: Lower 3He puff to 50 ms. Put some notches on J-port. |
| Jun 20 2006 01:34:38:507PM | 1060620017 | Alexandre Parisot | Density did not go down more.
It is coming from the antenna (or the RF) ? We have some good break-in-slope at 0.44, when JT's He II monitor crosses the value it had in the flattop discharges. Next: No 3He. |
| Jun 20 2006 01:54:34:733PM | 1060620018 | Alexandre Parisot | OK, 3He seems way down, no break-in-slope data.
It looks like we need that 3He puff, but we won't get lower density then. Next: Put back 3He puff 0-100ms. |
| Jun 20 2006 02:00:54:720PM | 1060620019 | Alexandre Parisot | Fizzle.
Next: Turn off J-port. No 3He puff, look at Afven cascades, hopefully with less nl04. |
| Jun 20 2006 02:24:55:813PM | 1060620020 | Alexandre Parisot | Good shot. J-port off. Still nothing on the PCI.
Next: Try to get a faster current rise, turn on D&E at 70 ms. |
| Jun 20 2006 03:10:01:283PM | 1060620022 | Alexandre Parisot | Still nothing on the PCI.
Next: Reload 14. |
| Jun 20 2006 03:17:51:067PM | 1060620023 | Alexandre Parisot | Disrupted at 0.50s. Got 5 keV.
Next: 5.35T |
| Jun 20 2006 03:31:07:960PM | 1060620024 | Alexandre Parisot | Good shot.
Next: Opposite phasing. |
| Jun 20 2006 03:49:12:643PM | 1060620025 | Alexandre Parisot | J faults early.
Next: Repeat. |
| Jun 20 2006 03:58:45:477PM | 1060620026 | Alexandre Parisot | Good comparison with shot 24
Next: Increase 3He puff duration to 150 ms. |
| Jun 20 2006 04:12:00:820PM | 1060620027 | Alexandre Parisot | Next: Opposite phasing |
| Jun 20 2006 04:32:22:000PM | 1060620028 | Alexandre Parisot | Next: Heating phasing |
| Physics Operator Comments | |||
| Jun 20 2006 07:48:58:723AM | Steve Wolfe | Setting up for run 1060620: Bring up pcs3-Beta. Got the dpcs config_id warning, which implies nobody has used the beta version since 2-Jun. Load_from 1060614031. Active segment is seg4, 0.8MA Upper Null Ip rampdown starts at 1sec, TF rampdown normal. NL04 rampdown is also not until 1.6sec, which might be a mistake if it weren't at such a low density (5e19) anyway. In seg1 Change PG2 puff to be [0,.120]sec Copy PG2 trace from seg1 to seg4. In seg4, zero acoil_cur waveform, integrator C gate to .25sec Load at 20-Jun-2006 07:48:26.00 Open tree /home/wolfe/pcs_scratch -1 Open tree done | |
| Jun 20 2006 09:15:24:493AM | 1060620001 | Steve Wolfe | Shot#1: plasma, full (short) length, some injections Bz looks a bit negative in startup, but who knows what the trace really means now. No runaways. Slow current rise. Not seeing pickup from J on the magnetics Next: reduce pg3 puff in seg1 |
| Jun 20 2006 09:43:28:143AM | 1060620002 | Steve Wolfe | Shot#2: reduce pg3 puff in seg1, ic_ef4 from -1325 to -1315 plasma, maybe some runaways? Yes, it bounced on startup. Early density still too high. Next: Load from 1060614012 to check on pickup. Load the whole shot, startup and all. |
| Jun 20 2006 09:56:59:820AM | 1060620003 | Steve Wolfe | Shot#3: Load from 1060614012 to check on pickup. Load the whole shot, startup and all. Note that this shot used seg3 active. It also has the bad Acoil_cur and integrator gate, and a different He3 puff, as well as different current and maybe field? plasma: disrupted at 1.2sec, no pickup on magnetics. Next: Change of plans, SL wants to use this shot instead of the current rise. |
| Jun 20 2006 10:12:53:437AM | 1060620004 | Steve Wolfe | Shot#4: Ef4 from -1335 to -1325, try to fix late bd (6.5ms) Acoil_cur to zero in seg3, IntC gate to .3sec Increase PG2 puff from 175ms to 200ms Early disruption, I think this shot is from before Ian fixed the vertical instability problem? No this one disrupts at .635sec; we're still seeing the vertical burst at 0.3sec, but that's not what killed it. This looks like an injection, definite runaways early, and a bounce in startup. Could be related. Next: increase pg4, rcur offset, try to fix the startup. |
| Jun 20 2006 10:34:17:117AM | 1060620005 | Steve Wolfe | Shot#5: PG4 from 19 to 22msec, RCUR offset from 1600 to 2000 Delay Ip gain switch from 0.5 to 0.7sec (after crossover) Still disrupting in flattop, around 1.1sec. Startup looks better, no bounce no runaways. Doesn't look like a locked mode, I think we're still getting hit by injections. Gas is off after 0.1sec, nl04 running around 0.5e20. Alex thinks the He3 valve isn't giving enough puff. Next: increase pg2 (earlier) |
| Jun 20 2006 10:45:59:590AM | 1060620006 | Steve Wolfe | Shot#6: Pg2 puff from .15 to .4sec. Plasma into ramp-down, got more He3 according to JT's signal Next: reduce he3 (.15 to .35) |
| Jun 20 2006 11:02:38:517AM | 1060620007 | Steve Wolfe | Shot#7: Pg2 puff from .15 to .35sec. Rf Adding D&E for heating, hope it doesn't make the injections worse. plasma to 1.2sec, 4.4MW when it disrupts, lots of injections. Looks like something heats up at 0.95sec or so. Next: repeat with co-CD phasing |
| Jun 20 2006 11:17:01:697AM | 1060620008 | Steve Wolfe | Shot#8: Repeat, change phase. plasma to 1.42sec, got some runaways early on this one, Looks like J faults around .8sec Back to the current ramp case. Back to shot 2 and lower pg3 in seg1. Put back the other startup tweaks I've done since. |
| Jun 20 2006 11:32:16:467AM | 1060620009 | Steve Wolfe | Shot#9: Reload shot 2, Back to the original program. PG4 to 22msec, RCUR offset to 2000, leave Ic_ef4 at -1315 Drop PG3 in seg1 and in seg4 plasma full (short) length. Early density at 8e19, flattop around 2e19. The PG3 feedforward is negative after 0.7sec or so, I'll just zero it. |
| Jun 20 2006 11:52:57:397AM | 1060620010 | Steve Wolfe | Shot#10: Zero Seg4 PG3 puff, otherwise repeat. 20 minute delay for data system hang. plasma ok, flattop density still low, around 3e19. Still getting some early runaway bursting. Getting up to 4.4MW of RF, but E and J look a little ratty early. Next: No changes |
| Jun 20 2006 12:04:57:537PM | 1060620011 | Steve Wolfe | Shot#11: plasma, no runaways this time E looks clean, J still has a few faults. next: no PCS changes |
| Jun 20 2006 12:17:19:770PM | 1060620012 | Steve Wolfe | Shot#12: No PCS change, reverse phasing again plasma ok, RF faulted (J) around 220msec next: no PCS changes |
| Jun 20 2006 12:31:12:357PM | 1060620013 | Steve Wolfe | Shot#13: No PCS change, try that one again plasma ok, looks like a clean pulse until J faults out at .34sec next: No PCS changes |
| Jun 20 2006 12:52:02:730PM | 1060620014 | Steve Wolfe | Shot#14: No PCS changes, reverse phase again plasma ok. Looks like some injections starting around .37sec RF clean before that, over 4.6MW. Wide 2 view shows something lighting up near G-port next: No PCS changes |
| Jun 20 2006 01:02:28:100PM | 1060620015 | Steve Wolfe | Shot#15: plasma ok. RF ok, no cascades next: reduce He3 puff to 0.1sec, eliminate pg3 in seg1 completely trying to reduce density in current rise |
| Jun 20 2006 01:15:46:267PM | 1060620016 | Steve Wolfe | Shot#16: reduce He3 puff to 0.1sec, eliminate pg3 in seg1 completely trying to reduce density in current rise plasma, density didn't drop much if at all. next: drop He3 to 50msec (all in seg1) |
| Jun 20 2006 01:31:13:307PM | 1060620017 | Steve Wolfe | Shot#17: drop He3 to 50msec (0 to .05s) plasma, short. disruption at 0.5sec. PF breaker pulled after; OH1 xbar. Density is still over 8e19 at .33sec Next: Eliminate He3 puff completely! |
| Jun 20 2006 01:56:30:687PM | 1060620018 | Steve Wolfe | Shot#18: Eliminate He3 puff completely! plasma, short. Disrupts at .5sec. Density is down to 0.6e20. He monitor signal is well down, about 10% of max level seen earlier. Prad is up. Te looks very high, neutrons too. No break in slope on the ECE profile at the notches, so it's not clear we're getting electron heating now. Next: back to 100ms He3 |
| Jun 20 2006 01:58:15:470PM | 1060620019 | Steve Wolfe | Shot#19: back to 100ms He3 Fizzle. One disruption to many, I guess. |
| Jun 20 2006 02:24:40:687PM | 1060620020 | Steve Wolfe | Shot#20: Turn He3 back off, turn off J-port for a shot to see if the cascades come back. Hopefully the plasma will just come back with no tweaks; it looked like it was just a bit slow on 19. Another disruption, later this time around 0.8sec. RF crowbarred Big runaway buildup after the RF is off? nl04 in flattop is around 0.35e20 startup is still a little slow, maybe I'd better drop pg4 a little next time. |
| Jun 20 2006 02:48:51:763PM | 1060620021 | Steve Wolfe | Shot#21: PG3 puff back on in seg1, drop pg4 from 22 to 20ms Turn on IP gain in seg1: Gain =2 after .06sec, Program 650kA at 0.1sec Controller=XCONTIHH, TAUOPT=0.3 Trying to get a faster current rise, as on 1040406018 (which got it naturally). Disrupted early, .35sec. Current rise is very slightly faster 525 vs 505ka at 100msec Looks like runaways before the RF, which turned on at .08sec this shot. next shot: Increase Ip gain to 4 in seg1 |
| Jun 20 2006 03:04:29:497PM | 1060620022 | Steve Wolfe | Shot#22: Increase Ip gain to 4 in seg1, raise Ip program at 0.1 and 0.15 in seg4. Plasma no disruption this time. Current rise is faster, got to 570kA at 0.1sec this time. Still no cascades. give up on cascades. Go back to shot#14 |
| Jun 20 2006 03:17:26:707PM | 1060620023 | Steve Wolfe | Shot#23: Reload shot 1060620014 (120ms He3 puff, No Ip gain in seg1,...) Note: PCS trapped the cursor in the all_v screen and I had to blow away the PCS from another ws and restart before this shot. plasma disrupts at 0.5sec, PF breaker pulled after. J had a little trouble early in the RF pulse. Next: change field from 5.4 to 5.35 |
| Jun 20 2006 03:30:48:730PM | 1060620024 | Steve Wolfe | Shot#24: Change TF Cur from -150000 to -148600 (seg1 and seg4) Plasma disrupts at 0.5sec. Next: Delay Ip gain switch from 0.5 to 0.7sec (I did this earlier, but it got lost). |
| Jun 20 2006 03:45:20:970PM | 1060620025 | Steve Wolfe | Shot#25: Delay Ip gain switch from 0.5 to 0.7sec (I did this earlier, but it got lost). Probably not related to the disruption, which was actually a bit before .5sec. No other PCS changes. RF is changing phase. Disrupted again, around 0.38sec. ECE gate valve was closed from the last disruption. J faulted early on this one. next: drop PG4 by 1msec |
| Jun 20 2006 03:58:06:587PM | 1060620026 | Steve Wolfe | Shot#26:PG4 from 22 to 21msec, post-disruption. Disrupts at 0.45sec, breaker pulled after. Wide 2 shows lots of injections and glowing things. Next: Increase PG2 to 150msec |
| Jun 20 2006 04:10:44:413PM | 1060620027 | Steve Wolfe | Shot#27:Increase PG2 from 120 to 150msec Disrupts at .53sec. We're clearly overheating something. Next: drop PG4 again, post-disrupt |
| Jun 20 2006 04:29:34:717PM | 1060620028 | Steve Wolfe | Shot#28: PG4 from 21 to 20msec plasma disrupts at .43sec That one had some early runaways. |
| Jun 20 2006 04:42:25:260PM | 1060620029 | Steve Wolfe | Shot#29: No pcs changes. These disruptions seem to be from major injections associated with the high RF power into these low density targets. The wide 2 view looks like the J antenna lower corner on the H-port side is one of the sources, but also injections are coming from all around the machine. Plasma with lots of early runaways. Looks like an injection or something scraping at 20 to 25msec, not a bounce, but the current drops and then rises again. Xrays saturating the detector. next: increase pg4, just to do something |
| Jun 20 2006 04:56:03:367PM | 1060620030 | Steve Wolfe | Shot#30: PG4 from 20 to 22msec; probably going to fizzle Very short plasma, .17sec, never sawtooths. Startup looks clean, but Prad just goes through the roof. One more try, no PCS changes. |
| Jun 20 2006 05:08:20:887PM | 1060620031 | Steve Wolfe | Shot#31: no PCS changes, still trying to get the heating phase case. plasma to .4sec or so, some early runaways but not as bad as 29. J stays on until about 0.3sec, then J3 has an overload fault. End of Run. |
| Engineering Operator Comments | ||||
| Shot | Time | Type | Status | Comment |
| 1 | 09:03:10:520AM | Plasma | Ok | |
| 2 | 09:32:34:060AM | Plasma | Ok | |
| 3 | 09:50:26:613AM | Plasma | Ok | |
| 4 | 10:06:21:713AM | Plasma | Bad | OH1 Type 1 Flt |
| 5 | 10:22:44:660AM | Plasma | Ok | |
| 6 | 10:35:50:257AM | Plasma | Ok | |
| 7 | 10:52:35:327AM | Plasma | Ok | |
| 8 | 11:08:43:270AM | Plasma | Ok | |
| 9 | 11:24:02:760AM | Test | Bad | |
| 10 | 11:47:22:110AM | Plasma | Ok | |
| 11 | 12:00:08:273PM | Plasma | Ok | |
| 12 | 12:13:10:173PM | Plasma | Ok | |
| 13 | 12:25:46:323PM | Plasma | Ok | |
| 14 | 12:40:52:997PM | Plasma | Ok | |
| 15 | 12:56:20:123PM | Plasma | Ok | |
| 16 | 01:09:31:980PM | Plasma | Ok | |
| 17 | 01:23:00:973PM | Plasma | Bad | OH1 fault opened breaker. |
| 18 | 01:41:05:223PM | Plasma | Ok | |
| 19 | 01:54:40:220PM | Plasma | Ok | |
| 20 | 02:07:09:643PM | Plasma | Bad | OH2U (Misc. Fault) |
| 21 | 02:33:39:943PM | Plasma | Ok | OH2 type 3 misc fault |
| 22 | 02:52:00:437PM | Plasma | Ok | |
| 23 | 03:11:00:907PM | Plasma | Ok | OH1 self power circuit fired |
| 24 | 03:25:47:760PM | Plasma | Ok | |
| 25 | 03:38:23:970PM | Plasma | Ok | |
| 26 | 03:51:00:410PM | Plasma | Ok | OH1 self powered circuit fired |
| 27 | 04:04:54:510PM | Plasma | Ok | |
| 28 | 04:21:09:633PM | Plasma | Ok | OH1 self powered circuit fired |
| 29 | 04:36:40:377PM | Plasma | Ok | |
| 30 | 04:49:29:003PM | Plasma | Ok | |
| 31 | 05:01:58:820PM | Plasma | Ok | OH1 self powered circuit fired |