| Miniproposals | ||||||||||
|
| Operators | |
| Session leader(s): | Robert Granetz |
| Physics operator(s): | Earl Marmar |
| Engineering operator(s): | Bill Cochran,Ed Fitzgerald,Bill Parkin |
| Engineering Operator Run Comment |
| MP #424 Initial tests of disruption mitigation using a gas jet |
| Session Leader Plans |
| Entered: Jun 2 2005 04:53:42:250PM |
| Author: Robert Granetz |
| Engineering setup for Friday, 03 June 2005 MP #424: Initial tests of disruption mitigation using a gas jet Session leader: R. Granetz (possibly also Dennis Whyte via remote access) Physics operator: E. Marmar NO overnight ECDC, but bake at 60 C. Run begins at 09:00 and ends at 17:00. Power systems as on 1050526026 (1.0 MA, 5.4 T, SNL fiducial) 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 with whatever Hybrid disabled fill B-main (C-side) with 30 psi D2 Hybrid enabled (PG3) NINJA not used today Torvac setup: unnecessary diagnostic (ECE, VUV) gate valves should be kept closed on all gas jet shots. Enable the following gate valves, assuming no vacuum problems: Z-bolo shutters Necessary diagnostics: Fast PSI camera on B-horizontal, starting at t=0.800 s, He+ filter Thomson scattering, with 2 lasers set to fire about 2 ms apart Bolometry Halo current Rogowskis ------------------------------------------------------------------------------- ICRF Setup: All transmitters in run on at 08:30. ------------------------------------------------------------------------------- Run plan: Start with a standard 1 MA fiducial with no gas jet, just as a baseline. Shot 1050526026 is good, but raise nl_04 to 1e20 m-2. Begin the day with no RF power. First few shots: Fire 1 ms helium gas jet at t=0.800 s. Plenum pressure = 70 bar. Observe camera image, bolometry, halo currents, Te profiles. Optimize diagnostic timings. If halo currents are much higher than normal (200 kA at these parameters), drop Ip to 0.8 MA. Likewise if plasma recovery is a problem. During the day: - Vary gas jet pulse length and gas jet plenum pressure. - Turn on RF heating to change plasma pressure - Change PSI filter to He0, and perhaps no filter - Change to neon (late in the day, since the neon bottle that we have only as 35 bar, which is questionable for sealing the fast valve). At some point in the day: Cause one or two disruptions without the gas jet by turning off the ZCUR feedback, for comparison |
| Physics Operators Plans |
| Entered: Jun 2 2005 05:31:35:060PM |
| Author: Earl Marmar |
| Granetz has already posted this in the SL_PLAN topic, but for completeness:
Engineering setup for Friday, 03 June 2005 MP #424: Initial tests of disruption mitigation using a gas jet Session leader: R. Granetz (possibly also Dennis Whyte via remote access) Physics operator: E. Marmar NO overnight ECDC, but bake at 60 C. Run begins at 09:00 and ends at 17:00. Power systems as on 1050526026 (1.0 MA, 5.4 T, SNL fiducial) 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 with whatever Hybrid disabled fill B-main (C-side) with 30 psi D2 Hybrid enabled (PG3) NINJA not used today Torvac setup: (ECE, VUV, DNB) gate valves should be kept closed on all gas jet shots. Enable the following: Z-bolo shutter Necessary diagnostics: Fast PSI camera on B-horizontal, starting at t=0.800 s, He+ filter Thomson scattering, with 2 lasers set to fire about 2 ms apart Bolometry Halo current Rogowskis ------------------------------------------------------------------------------- ICRF Setup: All transmitters in run on at 08:30. ------------------------------------------------------------------------------- |
| Session Leader Summaries |
| Entered: Jun 3 2005 09:27:36:147PM |
| Author: Robert Granetz |
| Run summary for Friday 03 June 2005: MP #424: Initial tests of disruption mitigation using a gas jet Session leader: R. Granetz, and D. Whyte via remote access Physics operator: E. Marmar This was a very successful run. The gas jet hardware worked well right from the first shot. We tried two gases (He and Ne), a range of pulse lengths (1-5 ms), and ohmic (55 kJ) and RF plasmas (80-110 kJ). The gas jet reliably disrupted the plasma with very good reproducibility. Timing jitter was only about 0.5 ms, which made it easier to optimize the timing of the Thomson system and the fast camera imaging. The TS gave good temporal information on the Te profiles which should be very useful for the NIMROD modeling. The camera captured good sequences in He0, He+, and Ne0 light. Helium gas jets did not change the usual disruption timescales, nor did it reduce halo currents. Neon (at only 49 bar) did speed up the quench, and reduced the halo currents. We also have lots of bolometry and AXUV profiles data to look at. It's clear that there are lots of things we still need to try in future runs (full pressure neon and argon, H-mode plasmas with higher Wth, etcetera). Finally, we showed unequivocably that gas jet mitigation did not have a negative impact on disruption recovery...we had no fizzles today. |
| Physics Operator Summaries |
| Entered: Jun 3 2005 05:56:48:033PM |
| Author: Earl Marmar |
| MP #424: Initial tests of disruption mitigation using a gas jet
Session leader: R. Granetz (with Dennis Whyte via remote access from the Netherlands) Physics operator: E. Marmar NO overnight ECDC, but bake at 60 C. Run begins at 09:00 and ends at 17:00. Power systems as on 1050526026 (1.0 MA, 5.4 T, SNL fiducial) A-coil configuration: normal [+Dtop -Dbot -Jtop +Jbot] and enabled. From the physop point of view this was an excellent day. The startup was robust. Some shots hesitated on current rise and had early hards. The only segment 1 pcs change all day was to decrease the prepuff by 2 msec for shot 4, which followed the first disruption. All plasma shots from #3 on had 1 MA disruptions. The only one that was not by design was on shot 9, which died early after a natural injection. Shots 4 and 5 were programmed vde disruptions, with zcur gains set to 0 after 0.8 seconds. Shot 4 went up, shot 5 went down. Both were programmed to move down before the gains went off: shot 4 about 2 cm, shot 5 about 3.5 cm. The gas jet experiments went very well, with both helium and neon being tested. See the session leader summary for details. Many of the shots had 2 to 3 MW of RF, with Wmhd up to nearly 115 kJ just before the disruptions. The main non-mp related delay came around 4:15 pm, when some water leaked from a DNB system, also causing the torvac turbos to shut down because of the low water flow. This was between shots 26 and 27. Shot 27 was a power supply dud; it appeared there was a computer network problem around the time we went into pulse, and most supplies did not fire. With no changes, shot 28, the last of the day, went through normally. Scorecard: Plasmas 27 Fizzles 0 Power supply dud 1 Total cycles 28 |
| Session Leader Comments | |||
| Jun 3 2005 09:13:31:203AM | 1050603001 | Robert Granetz | Plasma. Good shot. 1 MA, 5.4 T fiducial. nl_04=1e20 m-2. Ohmic. Next shot: 1 ms gas jet, helium, 70 bar, t=0.800 s. |
| Jun 3 2005 09:26:27:860AM | 1050603002 | Robert Granetz | Plasma. Good shot. No disruption. I think we fired...there was a small density increase at t=0.8 s. The fast pressure transducer says that we got some gas in. Plenum gas: He Plenum pre -pulse pressure (bar): 73 Plenum post-pulse pressure (bar): 72 Plenum change in pressure (bar): 1 Next shot: 1.5 ms pulse, 72 bar. |
| Jun 3 2005 09:59:19:423AM | 1050603003 | Robert Granetz | Plasma. Success! Good shot. Disruption started at t=0.809 s. Quench was not particularly fast. Plasma still went down. I_halo_lower=160 kA. Got some good H+ images. One Thomson point pair was at t=0.810 s, which is during the disruption, but there's too much background for the automatic analysis program. It may be possible to recover some information with some post-processing. Plenum gas: He Pulse length (ms): Plenum pre -pulse pressure (bar): 72 Plenum post-pulse pressure (bar): 57 Plenum change in pressure (bar): 1 Next shot: VDE disruption by programming feedback gain off in ZCUR at t=0.8 s. NO GAS JET on next shot. |
| Jun 3 2005 10:14:25:860AM | 1050603004 | Robert Granetz | Plasma. Force VDE disruption started at t=0.836 s, but it went up. Next shot: tweak the ZCUR programming to try and get a downward-going VDE. NO GAS JET. |
| Jun 3 2005 10:22:36:237AM | 1050603005 | Robert Granetz | Plasma. Successfully forced VDE downwards...good for comparison to gas-jet-induced disruptions. I_halo_lower=160 kA (same as shot 3 gas jet disruption), but not toroidally symmetric, unlike the shot 3 thermal quench disruption. Next shot: 1.3 ms gas jet, 70 bar, helium. |
| Jun 3 2005 10:48:21:160AM | 1050603006 | Robert Granetz | Plasma. Success again. Good shot. Disruption started at t=0.809 s again...very good reproducibility Quench was similar to earlier shot. I_halo_lower=183 ka, not as toroidally symmetric as before. TCI and TS gate valves stayed open. Plenum gas: He Pulse length (ms): 1.3 Plenum pre -pulse pressure (bar): 74 Plenum post-pulse pressure (bar): 62 Plenum change in pressure (bar): 12 Next shot: repeat. Jim Terry turned down the camera gain. |
| Jun 3 2005 10:49:48:847AM | 1050603006 | Robert Granetz | The AXUV array is giving useful data, although some of the core channels saturate during part of the disruption. |
| Jun 3 2005 11:13:21:503AM | 1050603007 | Robert Granetz | Plasma. Good shot. Disruption started at t=0.809 s. Quench was a litle slower than before. I_halo_lower=197 kA. Plenum gas: He Pulse length (ms): 1.3 Plenum pre -pulse pressure (bar): 62 Plenum post-pulse pressure (bar): 50 Plenum change in pressure (bar): 12 Next shot: repeat. Plenum has been topped off. |
| Jun 3 2005 11:11:23:690AM | 1050603008 | Robert Granetz | Plasma. Good shot. Disruption started at t=0.8085 s. Very similar to preceding shot. Plenum gas: He Pulse length (ms): 1.3 Plenum pre -pulse pressure (bar): 74 Plenum post-pulse pressure (bar): 62 Plenum change in pressure (bar): 12 Next shot: repeat. |
| Jun 3 2005 11:36:34:440AM | 1050603009 | Robert Granetz | Plasma. Disrupted, but at t=0.62 s, well before the gas jet fired. Went down. This could be used as another non-gas-jet disruption baseline shot. Next shot: repeat. Still ohmic. JT is trying to get an image with the ND filter in. Plenum has been topped off. |
| Jun 3 2005 11:52:17:813AM | 1050603010 | Robert Granetz | Plasma. Good disruption shot. Fast camera images are no longer saturated. At Dennis's suggestion, Bruce has switch Chromex to look at 486 He+ line to monitor helium retention. Plenum gas: He Pulse length (ms): 1.3 Plenum pre -pulse pressure (bar): 74 Plenum post-pulse pressure (bar): 62 Plenum change in pressure (bar): 12 Next shot: repeat with different timing on fast camera. JT is trying to get the entire disruption sequence on one shot. |
| Jun 3 2005 11:58:32:393AM | 1050603011 | Robert Granetz | Plasma. Good disruption shot. Very reproducible current quenches and halo currents. JT got a full sequence of images (300 microsecond spacing, 28 images). Plenum gas: He Pulse length (ms): 1.3 Plenum pre -pulse pressure (bar): 74 Plenum post-pulse pressure (bar): 62 Plenum change in pressure (bar): 12 Next shot: Turn on the RF, J-port only, 2.5 MW, starting at t=0.65 s. |
| Jun 3 2005 12:01:24:347PM | 1050603011 | Robert Granetz | Bruce reports the following about shot-to-shot helium retention: "Getting 400 counts or so on many channels (peak- shot 11 before disruption). Yesterday ~0. But, when we have done He puffing in the past for diagnostic purposes, the brightness was more like 1e3 and higher. So this is lower. Note that the Zeff is ~ 1." |
| Jun 3 2005 12:12:07:033PM | 1050603012 | Robert Granetz | Plasma. Good disruption shot. This one had 2.5 MW of RF. Wth is about 80 kJ on this shot (compared to 55 kJ on earlier ohmic shots). Fast camera mis-triggered... didn't get the disruption. Plenum gas: He Pulse length (ms): 1.3 Plenum pre -pulse pressure (bar): 74 Plenum post-pulse pressure (bar): 62 Plenum change in pressure (bar): 12 Next shot: no changes, repeat for fast camera |
| Jun 3 2005 12:30:16:190PM | 1050603013 | Robert Granetz | Plasma. Good RF-heated disruption shot. Wth=80 kJ (L-mode) again. Got good camera sequence this time (He+ filter) Plenum gas: He Pulse length (ms): 1.3 Plenum pre -pulse pressure (bar): 74 Plenum post-pulse pressure (bar): 62 Plenum change in pressure (bar): 12 Next shot: Change camera filter to look at neutral helium. |
| Jun 3 2005 12:53:52:847PM | 1050603014 | Robert Granetz | Plasma. Good RF disruption shot. L-mode. Camera mis-triggered. Plenum gas: He Pulse length (ms): 1.3 Plenum pre -pulse pressure (bar): 74 Plenum post-pulse pressure (bar): 62 Plenum change in pressure (bar): 12 Next shot: repeat for the camera (He0). |
| Jun 3 2005 01:05:22:470PM | 1050603015 | Robert Granetz | Plasma. Good disruption shot. Very reproducible current quenches and halo currents. The fast camera triggered properly, but it was satured. Plenum gas: He Pulse length (ms): 1.3 Plenum pre -pulse pressure (bar): 74 Plenum post-pulse pressure (bar): 62 Plenum change in pressure (bar): 12 Next shot: repeat with different ND filter. More RF if possible. |
| Jun 3 2005 01:21:37:300PM | 1050603016 | Robert Granetz | Plasma. Good disruption shot. Getting better on the ND filter for the fast camera. JT will change aperature after this shot. RF on; Wth=100 kJ. Plenum gas: He Pulse length (ms): 1.3 Plenum pre -pulse pressure (bar): 74 Plenum post-pulse pressure (bar): 62 Plenum change in pressure (bar): 12 Next shot: repeat with different camera aperature setting. |
| Jun 3 2005 01:34:30:347PM | 1050603017 | Robert Granetz | Plasma. Good RF disruption shot. These shots are all incredibly reproducible. Good image sequence of He0 showing the gas jet coming out of the nozzle. Plenum gas: He Pulse length (ms): 1.3 Plenum pre -pulse pressure (bar): 74 Plenum post-pulse pressure (bar): 62 Plenum change in pressure (bar): 12 Next shot: repeat...continuing to tweak camera and TS timing. |
| Jun 3 2005 02:03:32:347PM | 1050603018 | Robert Granetz | Plasma. Good RF disruption shot. Wth=100 kJ. We tried to get ECE GPC and Amanda says it worked. PRF=2.5 MW, clean pulse. Plenum gas: He Pulse length (ms): 1.3 Plenum pre -pulse pressure (bar): 74 Plenum post-pulse pressure (bar): 62 Plenum change in pressure (bar): 12 Next shot: repeat, no GPC. |
| Jun 3 2005 02:17:52:630PM | 1050603019 | Robert Granetz | Plasma. Good RF disruption shot. Wth=100 kJ. Plenum gas: He Pulse length (ms): 1.3 Plenum pre -pulse pressure (bar): 74 Plenum post-pulse pressure (bar): 62 Plenum change in pressure (bar): 12 Next shot: Increase jet pulse length to 2.0 ms. This will trip every gate valve on the machine. We want to see if we can speed up the current quench. |
| Jun 3 2005 03:11:34:440PM | 1050603020 | Robert Granetz | Plasma. Good RF disruption shot. But the 2.0 ms pulse only put in a little more gas, and the disruption current quench wasn't any different, nor was the halo current. Plenum gas: He Pulse length (ms): 2.0 Plenum pre -pulse pressure (bar): 74 Plenum post-pulse pressure (bar): 57 Plenum change in pressure (bar): 14 Next shot: increase gas jet pulse to 3.0 ms. |
| Jun 3 2005 03:11:52:940PM | 1050603020 | Robert Granetz | Plasma. Good RF disruption shot. But the 2.0 ms pulse only put in a little more gas, and the disruption current quench wasn't any different, nor was the halo current. Plenum gas: He Pulse length (ms): 2.0 Plenum pre -pulse pressure (bar): 74 Plenum post-pulse pressure (bar): 57 Plenum change in pressure (bar): 14 Next shot: increase gas jet pulse to 3.0 ms. |
| Jun 3 2005 03:15:20:020PM | 1050603021 | Robert Granetz | Plasma. Good RF disruption shot. Marginally more gas. Plenum gas: He Pulse length (ms): 3.0 Plenum pre -pulse pressure (bar): 74 Plenum post-pulse pressure (bar): 57 Plenum change in pressure (bar): 14 Next shot: 5 ms pulse. |
| Jun 3 2005 03:14:16:003PM | 1050603022 | Robert Granetz | Plasma. Good RF disruption shot. Still no more gas. We think the GV2 and maybe the GV1 valves are changing state during the discharge. Joe Bosco is looking at the PLC logic. Plenum gas: He Pulse length (ms): 5.0 Plenum pre -pulse pressure (bar): 74 Plenum post-pulse pressure (bar): 55 Plenum change in pressure (bar): 19 Next shot: Joe Bosco increase a pressure limit on our CG gauge in the PLC ladder logic. |
| Jun 3 2005 03:13:48:533PM | 1050603023 | Robert Granetz | Plasma. Good RF disruption shot. Plenum gas: He Pulse length (ms): 2.0 Plenum pre -pulse pressure (bar): 74 Plenum post-pulse pressure (bar): 58 Plenum change in pressure (bar): 16 Next shot: install the neon bottle |
| Jun 3 2005 03:38:08:270PM | 1050603024 | Robert Granetz | Jim has put a filter for neutral neon in the camera system, starting with this shot. |
| Jun 3 2005 03:54:04:923PM | 1050603024 | Robert Granetz | Plasma. Good RF disruption shot. Neon gas jet. The current quench starts later (since neon is slower), but it is definitely a quicker quench. And the halo current is somewhat less (143 kA). We'll need to adjust the TS timing. Plenum gas: Neon Pulse length (ms): 1.5 Plenum pre -pulse pressure (bar): 48 Plenum post-pulse pressure (bar): 43 Plenum change in pressure (bar): 5 Next shot: increase pulse length to 2.0 ms, and move the start of the gas jet earlier by 1.7 ms so that the TS point fixed at t=0.810 s is just after the beginning of the current quench. |
| Jun 3 2005 04:06:59:690PM | 1050603025 | Robert Granetz | Plasma. Good RF disruption shot. 100 kJ. Good camera sequence. The start of the quench did indeed move earlier. Plenum gas: Neon Pulse length (ms): 2.0 Plenum pre -pulse pressure (bar): 48 Plenum post-pulse pressure (bar): 43 Plenum change in pressure (bar): 5 Next shot: repeat, change TS timing and camera timing. |
| Jun 3 2005 04:21:43:380PM | 1050603026 | Robert Granetz | Plasma. Good RF disruption shot. Camera mis-triggered. I_halo_lower=135 kA. Plenum gas: Neon Pulse length (ms): 2.0 Plenum pre -pulse pressure (bar): 48 Plenum post-pulse pressure (bar): 43 Plenum change in pressure (bar): 5 Next shot: Repeat, tweak camera and TS timings. |
| Jun 3 2005 05:04:54:753PM | 1050603028 | Robert Granetz | Plasma. Good RF disruption shot. But the fast camera still didn't trigger at the correct time. Plenum gas: Neon Pulse length (ms): 2.0 Plenum pre -pulse pressure (bar): 49 Plenum post-pulse pressure (bar): 43 Plenum change in pressure (bar): 6 End of run. Great day. |
| Physics Operator Comments | |||
| Jun 3 2005 09:16:46:487AM | 1050603001 | Earl Marmar | First shot programmed for 1 MA LSN fiducial
load from 1050526026, increase nl_04 target to 1.e20 load segment 1 from 1050601022 plasma ohmic H-mode during ramp-down? (density goes up, h-alpha goes down, wtot goes up, z-meter profile flattens) |
| Jun 3 2005 09:23:49:500AM | 1050603002 | Earl Marmar | no pcs changes
plasma through ramp-down small puff from the gas jet (helium) at 0.8 seconds nl_04 increases from 9e19 to 1.3e20 |
| Jun 3 2005 09:49:16:767AM | 1050603003 | Earl Marmar | no pcs changes
enable Argon puff plasma Got the disruption 0.81 s, went down |
| Jun 3 2005 10:15:55:550AM | 1050603004 | Earl Marmar | two cell entries to reset gate valves (Thomson and TCI) before this shot
reduce prefill puff by 2 msec (now 27 msec) start plasma moving down at .75 seconds (ramp position down 2 cm between .75 and .8 s) turn off zcur feedback at 0.8 seconds no granetz helium puff plasma hard x-rays early (bouncy startup) got the disruption (.832 s), but it went up, not down. |
| Jun 3 2005 10:24:35:633AM | 1050603005 | Earl Marmar | push zcur down another 1.5 cm, and start it going down sooner (0.7 s, instead of 0.75)
zcur gains all still off at .8 seconds plasma no hards this time; better startup disrupt at .857 s; this one went down. |
| Jun 3 2005 10:46:57:470AM | 1050603006 | Earl Marmar | restore zcur programming from shot 3
plasma disrupt from fast helium puff |
| Jun 3 2005 10:58:51:643AM | 1050603007 | Earl Marmar | no pcs changes
plasma disrupt from helium gas jet at about the same time |
| Jun 3 2005 11:13:36:970AM | 1050603008 | Earl Marmar | no pcs changes
plasma disrupt from helium gas jet, similar to previous |
| Jun 3 2005 11:30:43:533AM | 1050603009 | Earl Marmar | no pcs changes
plasma early disruption (not from gas jet) something fell in at .57s, disrupt at .62 |
| Jun 3 2005 11:48:42:643AM | 1050603010 | Earl Marmar | no pcs changes
plasma disrupt from helium gas jet, usual time |
| Jun 3 2005 11:55:59:753AM | 1050603011 | Earl Marmar | no pcs changes
plasma disrupt from helium gas jet, usual time |
| Jun 3 2005 12:22:02:830PM | 1050603012 | Earl Marmar | no pcs changes
RF (J-port only) for this shot plasma disrupt during H-mode from helium gas jet |
| Jun 3 2005 12:36:55:113PM | 1050603013 | Earl Marmar | no pcs changes
plasma RF not steady; in and out of H-mode |
| Jun 3 2005 12:58:30:360PM | 1050603014 | Earl Marmar | no pcs changes
plasma helium gas jet disruption at same time |
| Jun 3 2005 12:59:41:643PM | 1050603015 | Earl Marmar | no pcs changes
plasma RF started later, clean pulse, disrupt in H-mode |
| Jun 3 2005 01:16:10:173PM | 1050603016 | Earl Marmar | no pcs changes
plasma startup barely made it; lots of hards helium gas jet disruption at the usual time; more RF power (E-port added); one J-port trip; H-mode until disruption |
| Jun 3 2005 01:29:28:987PM | 1050603017 | Earl Marmar | no pcs changes
plasma better startup; no hards helium gas jet disruption at usual time |
| Jun 3 2005 01:43:26:893PM | 1050603018 | Earl Marmar | no pcs changes
plasma hesitation in startup; lots of hards early usual helium gas jet disruption clean 2.6MW RF |
| Jun 3 2005 02:08:45:220PM | 1050603019 | Earl Marmar | no pcs changes
plasma nice startup, no hards helium gas jet disruption, plasma in H-Mode |
| Jun 3 2005 02:27:31:237PM | 1050603020 | Earl Marmar | no pcs changes
plasma good startup He jet disrupt |
| Jun 3 2005 02:51:00:190PM | 1050603021 | Earl Marmar | no pcs changes
plasma good startup better RF He jet disruption |
| Jun 3 2005 02:52:18:737PM | 1050603022 | Earl Marmar | no pcs changes
lost the voice of Pat Stewart before this shot plasma hesitation during startup; hards early He jet disruption |
| Jun 3 2005 03:11:11:520PM | 1050603023 | Earl Marmar | no pcs changes
plasma long hesitation during startup; more early hards 3 MW RF, H-mode to He jet disruption |
| Jun 3 2005 03:20:17:377PM | 1050603024 | Earl Marmar | no pcs changes
changing the disruption gas jet from helium to neon |
| Jun 3 2005 03:48:22:550PM | 1050603024 | Earl Marmar | no pcs changes
changing the disruption gas jet from helium to neon plasma nice startup, no hards 3 MW RF, Ne gas jet disruption |
| Jun 3 2005 04:56:11:770PM | 1050603025 | Earl Marmar | no pcs changes
plasma decent startup, a few hards some RF trips, Ne gas jet disruption |
| Jun 3 2005 04:54:52:423PM | 1050603026 | Earl Marmar | no pcs changes
plasma decent startup, a few hards some RF trips, Ne gas jet disruption |
| Jun 3 2005 04:56:56:503PM | 1050603027 | Earl Marmar | no pcs changes
PS Dud no current in most supplies. Network problem right around the time of pulse. |
| Jun 3 2005 05:04:57:220PM | 1050603028 | Earl Marmar | no pcs changes
plasma decent startup, some hards Ne gas jet disruption |
| Engineering Operator Comments | ||||
| Shot | Time | Type | Status | Comment |
| 1 | 09:04:13:470AM | Plasma | Ok | |
| 2 | 09:18:59:517AM | Plasma | Ok | |
| 3 | 09:32:03:267AM | Plasma | Ok | |
| 4 | 10:03:41:610AM | Plasma | Ok | |
| 5 | 10:16:29:110AM | Plasma | Ok | |
| 6 | 10:29:29:277AM | Plasma | Ok | |
| 7 | 10:49:40:440AM | Plasma | Ok | |
| 8 | 11:04:12:410AM | Plasma | Ok | |
| 9 | 11:26:28:080AM | Plasma | Ok | |
| 10 | 11:39:10:130AM | Plasma | Ok | |
| 11 | 11:51:47:643AM | Plasma | Ok | |
| 12 | 12:04:25:753PM | Plasma | Ok | |
| 13 | 12:17:56:097PM | Plasma | Ok | |
| 14 | 12:36:10:753PM | Plasma | Ok | |
| 15 | 12:53:35:033PM | Plasma | Ok | |
| 16 | 01:10:24:630PM | Plasma | Ok | |
| 17 | 01:23:32:720PM | Plasma | Ok | |
| 18 | 01:37:22:033PM | Plasma | Ok | |
| 19 | 02:02:55:677PM | Plasma | Ok | |
| 20 | 02:19:22:427PM | Plasma | Ok | |
| 21 | 02:33:04:003PM | Plasma | Ok | |
| 22 | 02:46:39:830PM | Test | Bad | |
| 23 | 03:03:07:330PM | Plasma | Ok | |
| 24 | 03:38:11:970PM | Plasma | Ok | |
| 25 | 03:57:16:737PM | Plasma | Ok | |
| 26 | 04:10:37:800PM | Plasma | Ok | |
| 27 | 04:47:50:207PM | Plasma | Bad | network melt down? |
| 28 | 05:00:33:050PM | Plasma | Ok | |