| Miniproposals | ||||||||||
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| Operators | |
| Session leader(s): | Theodore Golfinopoulos,Robert Granetz |
| Physics operator(s): | Earl Marmar |
| Engineering operator(s): | Andy Pfeiffer,Bill Byford,Ed Fitzgerald |
| Engineering Operator Run Comment |
| MP432/MP590: TAEs and RF tail losses/Characterization of driven AEs SL: |
| Session Leader Plans |
| Entered: Jan 22 2010 09:02:45:227AM |
| Author: Theodore Golfinopoulos |
| Goal:
***** Excite Alfven eigenmodes using modulation of ICRF. Shots 1-3: ********** Establish wall-limited plasma; determine threshold for MARFEs. Start at: B_T: 5.0 T I_P: 0.6 MA nl04: 1.0E20 If can't get nl04 sufficiently high (around 1.5E20), can switch to He plasma. Calibrate HIREX Sr Shots 4-10: *********** P_ICRF from D at 0.75 MW, modulated B_T 5.0 T (or higher) nl04=1.5E20 I_P=0.6 MA Shots 4-5, modulate from 100 kHz to 1 MHz -Look for AE modes. Shots 6-7 -Modify frequency range to focus around resonances from 4-5 Shots 8-10, switch to AMHD (if functioning) and perform frequency sweeps to compare with ICRF modulation scheme. Shots 11-22: ************ Go to lower densities, analyze CNPA data and examine reheat after sawteeth to look for fast ion losses, affects of AEs on heating efficiency. B_T=5.4 T nl04=0.5-0.8 E20 I_P=0.6 MA Shots 23-end: ************* B-field sweep to verify scaling of AE frequency. Shot to shot variation of B_T from 5.0 to 5.75 in 0.15 T steps. |
| Physics Operators Plans |
| Entered: Jan 21 2010 05:02:06:480PM |
| Author: Earl Marmar |
| Setup for Friday, January 22, 2010
MP432/MP590: TAEs and RF tail losses/Characterization of driven AEs SL: Granetz/Golfinopoulos PO: Marmar Overnight ECDC Gas: D2 sweep: 44/45/103 cm scan: 20/120 s Pressure: 2e-4 Torr (gauge) ----------------- Engineering Setup ----------------- Run begins at 09:00 and ends at 17:00 Power systems as on: 1091208026 Acoil: +Dtop -Dbot -Jtop +Jbot (standard) Hybrid Enabled Gas setup: Fill B-Top with 6 psi D2 Hybrid enabled (PG4) fill B-side lower with 1 psi Ar Hybrid ENABLED (PG1) leave B-side upper as is Hybrid DISABLED (PG2) fill B-main (C-side) with 40 psi D2 Hybrid enabled (PG3) leave H-bottom as is Hybrid DISABLED (PG5) fill NINJA with 10 psi D2 DISABLED Enable gatevalves and shutters: ECE, VUV, HiREX Sr, Z-bolo, B-spectrometer Torvac gatevalve toggle (yes/no): No Boronization(yes/no): no Overnight ECDC (yes/no): yes ICRF(yes/no): YES, D ready to go with frequency modulation, E on standby (no J). LH(yes/no): no Cryopump (yes/no): no Vessel temperature: 35/35/35 |
| Session Leader Summaries |
| Entered: Jan 22 2010 05:58:20:963PM |
| Author: Robert Granetz |
Here's my run summary: I didn't see any clear evidence of driven AE resonances, but I probably shouldn't have expected to see anything obvious. I guess we'll have to go back to some of the best shots (21, 28, 30) and look in more detail at the phase analysis. But we have lots of additional things to try in future runs, such as diverted equilibria, helium plasmas, using the D+E beat wave instead of modulating D,... |
| Entered: Jan 22 2010 07:20:13:277PM |
| Author: Theodore Golfinopoulos |
| GOAL:
***** 1. Drive Alfven eigenmodes by modulating ICRF with signal at AE frqeuenc; characterize the structure of those modes 2. Compare ICRF modulation drive with active MHD drive. 3. Look for fast ion losses induced by (strongly-driven) AEs excited by modulation antenna 4. Look for affects on heating efficiency of strongly-driven AEs. It is noteworthy that there is no direct coupling between the modulated signal in the ICRF antenna and the magnetics probes, as there is between the active MHD antenna and the probes. Only the nonlinearity of the plasma creates a coherent signal at the modulation signal. This may simplify analysis of the probes. RESULT: ******* -Explored B_T from 5.0 T (e.g. Shot 4) to 6.0 T (e.g. Shot 28) -Explored density from nl04 = 0.65E20 (Shot 28) to 1.2E20 (Shot 4) m^-2. -ICRF modulation functional, clearly visible on magnetics probes, and often on some PCI channels, as well. -Ran AMHD antenna without ICRF modulation on Shots 11-13, 24 -Locked mode shot on 27 for HIREX Sr calibration -Overall, very good plasmas - great job, Earl and crew. MARFEs -MARFEs in early shots. -filling total ICRF power to around 2 MW with use of J antenna (at 78 MHz per Steve Wolfe's suggestion so as to put the beat of D (at around 80.5 MHz) well out of range of the AE mode, though perhaps alias is visible in some diagnostics?). -This is in accordance with experience from 1080403 run. PCI -Consistently saw an excitation in the PCI spectrograms following the modulation frequency. -Especially visible after Shot 16 (higher field, 5.4 T on this shot) -This was true for Channels 9 and 10, marginally Channel 1, and almost nothing on all other channels. -The fact that the signal was strongest in Channels 9 and 10 did not change even as B_T, and the ICRF deposition location, was changed shot to shot. -Naoto Tsujii warns that Channels 9 and 10 are typically the noisiest. Is it the case that what normally amounts to noise in the PCI is now being driven by the ICRF modulation? And that the excitation visible in the PCI at the modulation frequency is not actually due to density fluctuations, but some other (accidental) coupling of the diagnostic to the plasma? -Time index in PCI shifted by around 0.023 s for Shot 21. CNPA -Good counts on many shots. -No clear evidence of large fast ion losses as yet. -May need more dwell time at a resonant frequency to see the effect. Heating Efficiency -No clear evidence of AE effects. -Again, may need more dwell time at a resonant frequency to see the effect. Background Modes -Excitations present over several narrow bands, the frequencies of which vary during the shot. -Multiple bands, perhaps 25-50 kHz bandwidth, between 300 and 900 kHz. -These excitations are present before, during, and after ICRF is turned on. Their frequencies seem to decrease when ICRF is turned on, perhaps according to the density jump. -The frequency of the bands may scale with V_alfven in general - need to verify. If so, are they AEs? What is driving them? Can/do we drive them when our excitation frequency crosses them? -Bands are generally more apparent at lower densities. Compare Shots 21 and 28 (density 0.65-0.8E20 nl04) to 29 and 30 (density around nl04=1.0E20). Some good shots: -Shots 21 and 28 - background modes clearly visible, and ICRF modulation frequency crosses through them. -Shots 29 (no ICRF) and 30 (with ICRF) make a good pair for comparison TO DO: ****** 1. Go through shots with synchronous detection to carefully look for resonances. 2. Determine whether frequencies of "background modes" are, in fact, scaling with V_alfven. 3. Compare ICRF modulation with active MHD antenna drive method in more detail. 4. Determine whether we are ever driving the "background modes" when the drive frequency crosses their bands. 5. If modes are identified, characterize mode structure, and make use of HIREX Sr data/Doppler shift for comparison of toroidal mode number. 6. etc. MISCELLANEOUS NOTES: ******************* 1. PCI Calibration note: Naoto suggests trying a shot where the phase plate of PCI is removed. In this case, the PCI is not capable of measuring density fluctuations, so that the background is isolated. This may be a good calibration procedure for the PCI, in general. 2. Time index in PCI shifted by around 0.023 s for Shot 21. |
| Physics Operator Summaries |
| Session Leader Comments | |||
| Jan 22 2010 09:03:47:447AM | 1100122001 | Theodore Golfinopoulos | No power shot. |
| Jan 22 2010 09:27:14:737AM | 1100122002 | Theodore Golfinopoulos | Shot Summary:
Goal: ***** Find MARFE threshold density. Result: ******* Disruption around 0.9 s MARFEs, even at low density. Bt: 5.0 T Ip: 0.6 MA Nl04: 1.0E20 Picrf: 0.75 MW (D modulated 20 %, 100 kHz to 1 MHz) Next Shot: ********** Increase I_P to 0.8 MA, increase power on D antenna to 1.3 MA - try to avoid MARFEs. |
| Jan 22 2010 09:38:06:090AM | 1100122003 | Theodore Golfinopoulos | Shot Summary:
Goal: ***** Find MARFE threshold. Result: ******* Disruption at 0.8 s Bt: 5.0 T Ip: 0.8 MA Nl04: 1.2E20 (RF kicked it up) Picrf: 1.3 MW Next Shot: ********** 1.3 MW D antenna, 0.7 MW J antenna Less argon |
| Jan 22 2010 09:50:12:980AM | 1100122004 | Robert Granetz | This shot had increased Prf (D=1.3 MW, J=0.85 MW), and a greatly reduced argon puff. It's now 70 ms instead of 170 ms. So this shot didn't disrupt. This probably means we could go back to Ip=0.6 MA to match the 1080403 run. |
| Jan 22 2010 10:11:47:097AM | 1100122004 | Theodore Golfinopoulos | Shot Summary:
Goal: ***** Reduce MARFE Result: ******* Plasma Higher RF power defeated MARFE Bt:5.0 T Ip: 0.8 MA Nl04: 1.2E20 Picrf: 2 MW Magnetics showing modulation sweep. Next Shot: ********** Same thing. |
| Jan 22 2010 10:07:05:303AM | 1100122005 | Robert Granetz | I'm using Martin's sawtooth reheat program. As expected, I don't see anything corresponding to the ICRF frequency sweep. (The sweep goes from t=0.5 to t=1.5 s, starting at 500 kHz, increasing to 1 MHz at t=0.75 s, then back down to 0.5 MHz at t=1.0 s, then down to 0 MHz, then back to 500 kHz (i.e. one modulation cycle over 1.0 s. |
| Jan 22 2010 10:18:33:093AM | 1100122005 | Theodore Golfinopoulos | Shot Summary:
Goal: ***** Repeat Result: ******* Plasma Bt:5.0 T Ip: 0.8 MA Nl04: 1.2E20 Picrf: 2 MW Next Shot: ********** Same thing. |
| Jan 22 2010 10:37:14:503AM | 1100122006 | Robert Granetz | BP01_GHK shows misleading signs of a resonance around t=1.3-1.5 s, but on closer examination, the plasma is changing a bit after t=1.3 s. We tracked this down to a programming feature in CLEARIN that was inherited from the starting shot. Earl removed it prior to shot 8. |
| Jan 22 2010 10:42:01:090AM | 1100122007 | Theodore Golfinopoulos | Shot Summary:
Goal: ***** Higher density, higher ICRF modulation Result: ******* Plasma Density not much higher than before. Bt: 5.0 T Ip: 0.8 MA Nl04: 1.2E20 Picrf: 2MW Next Shot: ********** Removed CLEARIN jump that was causing more elongation toward end of shot. Higher density. |
| Jan 22 2010 10:54:18:243AM | 1100122008 | Robert Granetz | Shot 08 -- Still no signs of any AE resonances at this higher density, but there's a huge marfe for nearly the entire shot. |
| Jan 22 2010 11:00:11:297AM | 1100122009 | Theodore Golfinopoulos | Reduced frequency sweep range to 350 kHz to 650 kHz while keeping sweep rate the same.
Bring the density back down to avoid MARFE. At this lower density, scaling from 1080403022-025 suggests resonance near 510 kHz. |
| Jan 22 2010 11:30:11:950AM | 1100122009 | Theodore Golfinopoulos | Reduced frequency sweep range to 350 kHz to 650 kHz while keeping sweep rate the same.
Bring the density back down to avoid MARFE. At this lower density, scaling from 1080403022-025 suggests resonance near 510 kHz. |
| Jan 22 2010 11:32:08:027AM | 1100122011 | Theodore Golfinopoulos | Steve Wukitch and I pulled out transformer from J114<->ACQ216_3 - shorting the driver on the ICRF rack and that is why we saw no modulation signal. (And connected directly without isolation => giant ground loop, ouch.)
Turned off modulation. Turned on active MHD antenna, set to have 450-550 kHz sweep, 5.1 V tuning. |
| Jan 22 2010 11:46:56:370AM | 1100122012 | Theodore Golfinopoulos | Repeat - process to look for AEs using synchronous detection.
Now seeing signal on ACQ216_3 Channel 14 thanks to removing isolation transformer. |
| Jan 22 2010 12:39:22:920PM | 1100122013 | Theodore Golfinopoulos | AMHD range 550-650 kHz to explore different frequency range. No modulation on ICRF. Same plasma configuration. |
| Jan 22 2010 12:41:54:097PM | 1100122014 | Theodore Golfinopoulos | Modulate ICRF on D with frequency sweep, 400-600 kHz, at higher sweep rate (2.5 Hz, 0.4 s triangle period).
Turn off active MHD antenna. Still not getting clean signal of ICRF modulation - Steve Wukitch will go in to fix (after Shot 15). |
| Jan 22 2010 01:02:35:540PM | 1100122015 | Theodore Golfinopoulos | Density down to 0.8E20 nl04.
Didn't get full ICRF pulse For next shot: Increase field to 5.4 T. f_res should be around 680 kHz - adjusted center of amhd and ICRF modulation sweeps to be around this frequency - ICRF now runs from 630-730 kHz with 1 s triangle period. AMHD runs from 630-730 kHz with 0.4 s triangle period. Run ICRF modulation on next shot. Current Amplitude Signal: Cable looks fine - not sure why we are not able to digitize the signal. |
| Jan 22 2010 01:46:14:603PM | 1100122016 | Theodore Golfinopoulos | B_T 5.4 T, nl04=0.8E20 target, 1.0E20 actual.
ICRF modulation sweep was from 620 to 720 kHz, where expected resonance with actual density is around 600 kHz. On PCI channels 9, 10, can see a strong signal. Earl suggests that ICRF deposition location is now in view of PCI. Also, we seem to be able to do synchronous detection with ICRF amplitude probe, after all. Next Shot: Lower target density to 0.6E20 Sweep frequency 630 kHz to 730 kHz. |
| Jan 22 2010 01:39:02:287PM | 1100122017 | Robert Granetz | Shot 17 -- When the B-field was raised to 5.4 T starting with shot 16, the sawtooth reheat rates went all over the map...much less consistent than the 5.0 T shots (up to shot 15 inclusive). |
| Jan 22 2010 01:52:58:657PM | 1100122017 | Theodore Golfinopoulos | B_T 5.4 T, nl04=0.6E20 target, 1.0E20 actual.
ICRF modulation sweep was from 630 to 730 kHz, where expected resonance with actual density is again around 600 kHz. Seems to be hard to get density down below 1.0E20. Amplitude variation of ICRF modulation seems lower. Next Shot: Lower target density to 0.6E20 Sweep frequency 560 kHz to 710 kHz - don't know where density is going to be. Try to increase ICRF modulation. |
| Jan 22 2010 02:10:03:643PM | 1100122018 | Robert Granetz | Shot 18 -- I thought I saw an excited mode just after D-port turned off prematurely, but it turns out that it was due to the periodic retries of the D-port transmitter. |
| Jan 22 2010 02:15:51:463PM | 1100122018 | Theodore Golfinopoulos | B_T 5.4 T, nl04=0.5E20 target, 0.9E20 actual until D antenna turned off.
Lost D antenna between 0.9 and 1.0 s. Still seems to be hard to get density down below 1.0E20. Magnetics probes are picking up (modes?) at several frequencies - frequency of these modes seems to vary with density. They are present with and without RF, with and without modulation. Seem to skirt just outside of modulated frequency range while D antenna is on. Next Shot: ICRF modulation - move sweep frequency 300 kHz to 800 kHz to try to interact with these modes? in the background. |
| Jan 22 2010 02:23:06:203PM | 1100122019 | Theodore Golfinopoulos | B_T 5.4 T, nl04=0.5E20 target, 0.7E20 actual.
ICRF sputtering and then out. Odd background modes still seem present, and now that RF was largely off the whole time (and density constant), their frequencies stay relatively constant. Next Shot: Same thing - try to get ICRF back. Still broad modulation to try to interact with background modes. |
| Jan 22 2010 03:24:32:300PM | 1100122021 | Theodore Golfinopoulos | B_T 5.8 T, nl04=0.5E20 target, 0.8E20 actual.
Modulation frequency sweep visible on same PCI channels despite the fact that the field has increased and the ICRF deposition location has changed. Sweep crosses background modes. It seems that there is brightening around crossings of these background modes in spectrogram, for example from t = 0.63-0.76 s, but so far, synchronous detection (to amplitude modulation signal on ACQ216_3 Channel 14) does not indicate the crossing of a resonant pole. Next Shot: ********** Reduce field to 5.6 T. |
| Jan 22 2010 04:46:03:147PM | 1100122021 | Robert Granetz | Shot 21 -- good shot for further analysis; 0.8 MA, 5.8 tesla, 0.8e20 m-2, w/ ICRF frequency sweep |
| Jan 22 2010 05:09:22:983PM | 1100122024 | Theodore Golfinopoulos | B_T 5.8 T
Turn of ICRF modulation, turn on active MHD antenna, sweep from 340 to 540 kHz (tuning voltage at 4.40 V). Motivation: perhaps excitation with ICRF is in wrong location - try to excite at the edge. Frequency range is chosen to reflect brightening in shot 21 between t=0.63-0.76 s. Runaways on this shot. Next Shot: ********** Locked-mode shot for HIREX Sr calibration. |
| Jan 22 2010 03:58:31:297PM | 1100122025 | Theodore Golfinopoulos | Fizzle. |
| Jan 22 2010 04:34:45:913PM | 1100122027 | Theodore Golfinopoulos | Successful locked mode shot, despite disruption. |
| Jan 22 2010 04:34:06:053PM | 1100122028 | Theodore Golfinopoulos | B_T 6.0 T
ICRF modulation back on repeat of Shot 21 with higher field. Idea is that maybe excitation is localized in the wrong place relative to those background modes. No AMHD excitation. Next Shot: ********** Higher density, field back around 5.8 T |
| Jan 22 2010 04:46:23:037PM | 1100122028 | Theodore Golfinopoulos | B_T 6.0 T
ICRF modulation back on repeat of Shot 21 with higher field. Idea is that maybe excitation is localized in the wrong place relative to those background modes. No AMHD excitation. Quick analysis on spectrogram - maybe a brightening between 1.3 and 1.35 as we cross a background mode. Next Shot: ********** Higher density, same field. |
| Jan 22 2010 04:49:00:930PM | 1100122028 | Robert Granetz |
Shot 28 -- good shot for further analysis; 0.8 MA, 6 tesla, 0.65e20 m-2, w/ ICRF frequency sweep
Note: no ECE because gate valve had closed on the previous disruption.
|
| Jan 22 2010 04:52:07:027PM | 1100122029 | Theodore Golfinopoulos | B_T 6.0 T, density target 1.0E20, up from 0.5E20, where it has been for the past shots (minus the locked mode shots, 25-27).
Result: ******* D antenna didn't come on => no modulation. Reference shot! (Assuming we get D on 30.) Impurity injection around 1.4 s. Next Shot: ********** Same thing - B_T = 6.0 T, nl04 target = 1.0E20. |
| Jan 22 2010 05:12:28:003PM | 1100122030 | Theodore Golfinopoulos | B_T 6.0 T, density target 1.0E20.
Result: ******* D antenna functioning for the most part (a little trip around 1 s). It seems that the background modes were fainter in Shots 29 and 30, and also drop to lower frequency (and note the higher density - perhaps scaling with k_par * V_alfven). Last shot of the day - good job, all. |
| Physics Operator Comments | |||
| Jan 22 2010 09:03:59:697AM | 1100122001 | Earl Marmar | Start with the inner wall limited shot
load from 1080403025 zero segments 3 and 4 call all magnetics in segment 2 nl_04 to 1e20 Toroidal field current to -139. kA import segment 1 from 1100120027 into segment 1 no excitation on alternator - no power shot |
| Jan 22 2010 09:27:36:050AM | 1100122002 | Earl Marmar | Start with the inner wall limited shot
load from 1100120027 import segment 2 from 1100122001 into segment 2 plasma disrupt at 0.9 s marfing through most of the shot |
| Jan 22 2010 09:50:26:357AM | 1100122003 | Earl Marmar | Ip to 0.8 MA
plasma, disrupt at 0.82 s full on marfe Matt points out that the argon puff is "aggressive"; set up was from a shot that had cryopumping |
| Jan 22 2010 09:54:22:063AM | 1100122004 | Earl Marmar | reduce argon puff (now 70 ms, starting at 0.3 s)
plasma, full length total ICRF power now 2 MW, kills the marfe shortly after RF turn-on |
| Jan 22 2010 10:12:02:177AM | 1100122005 | Earl Marmar | no dpcs changes
plasma, full length bounce on the startup, a few hards showing up |
| Jan 22 2010 01:33:38:030PM | 1100122006 | Earl Marmar | prefill puff to 22 ms (from 20 ms)
plasma, full length startup bounce about the same |
| Jan 22 2010 10:38:29:257AM | 1100122007 | Earl Marmar | nl_04 target to 1.2e20
reduce argon puff (now 50 ms, starting at 0.3 s) plasma, full length bounce, hards creeping up |
| Jan 22 2010 10:49:27:410AM | 1100122008 | Earl Marmar | eliminate the clearin change after 1.2 seconds, keep the shape from getting more elongated
nl_04 target to 1.3e20 plasma, nearly full length OH2_l hits PLC limit during rampdown |
| Jan 22 2010 11:09:25:103AM | 1100122009 | Earl Marmar | IC_EF4 10 A less negative (now -1290 A)
nl_04 target to 1.0e20 plasma, full length startup still bouncing |
| Jan 22 2010 11:29:52:450AM | 1100122010 | Earl Marmar | no dpcs changes
plasma, full length |
| Jan 22 2010 11:39:13:597AM | 1100122011 | Earl Marmar | no dpcs changes
plasma, full length |
| Jan 22 2010 11:56:52:710AM | 1100122012 | Earl Marmar | no dpcs changes
plasma, full length startup bounce is worse, hards up |
| Jan 22 2010 12:45:11:443PM | 1100122013 | Earl Marmar | no dpcs changes
plasma, full length |
| Jan 22 2010 12:49:22:853PM | 1100122014 | Earl Marmar | no dpcs changes
plasma, full length |
| Jan 22 2010 12:40:32:000PM | 1100122015 | Earl Marmar | nl_04 target to 0.8e20
plasma, full length |
| Jan 22 2010 01:20:16:560PM | 1100122016 | Earl Marmar | Bt to 5.4 tesla (from 5.0)
plasma, full length |
| Jan 22 2010 01:37:22:523PM | 1100122017 | Earl Marmar | nl_04 target to .6e20
plasma, full length big bounce during startup |
| Jan 22 2010 02:09:58:313PM | 1100122018 | Earl Marmar | prefill puff to 25 msec (from 22 ms)
nl_04 target to 5e19 plasma, full length |
| Jan 22 2010 02:18:48:670PM | 1100122019 | Earl Marmar | no dpcs changes
plasma, full length hards are worse |
| Jan 22 2010 02:43:25:063PM | 1100122020 | Earl Marmar | no dpcs changes
plasma, full length bounce is better, still plenty of early hards |
| Jan 22 2010 02:57:06:737PM | 1100122021 | Earl Marmar | Toroidal field current to-160 kA (~5.8 T)
plasma, full length bounce, hards |
| Jan 22 2010 03:16:55:570PM | 1100122022 | Earl Marmar | Toroidal field current to -155 kA (~5.6 T)
plasma, full length hards |
| Jan 22 2010 03:17:24:383PM | 1100122023 | Earl Marmar | no dpcs changes
plasma, full length hards |
| Jan 22 2010 03:39:01:860PM | 1100122024 | Earl Marmar | prefill puff to 27 ms (from 25 ms)
toroidal field current to -160 kA (~5.8 T) plasma, full length plenty of hards |
| Jan 22 2010 04:01:37:050PM | 1100122025 | Earl Marmar | locked mode shot
load from 1091208026 import segment 1 from 1100122024 into segment 1 fizzle |
| Jan 22 2010 04:15:26:703PM | 1100122026 | Earl Marmar | reduce prefill puff to 26 ms (from 27 ms).
plasma mega runaways, disrupts at 1.0 s |
| Jan 22 2010 04:35:23:557PM | 1100122027 | Earl Marmar | prefill to 31 ms (from 25 ms)
no hards locks at .7 s, disrupts at 1.05 s |
| Jan 22 2010 04:46:51:333PM | 1100122028 | Earl Marmar | reload shot 21
import segment 1 from shot 27 into segment 1 toroidal field current to -167 kA (~6.0 T) [PLC limit changed to 175 kA, from 165] plasma, full length |
| Jan 22 2010 04:48:39:070PM | 1100122029 | Earl Marmar | nl_04 target to 1e20
plasma, full length hards are back |
| Jan 22 2010 04:52:54:623PM | 1100122030 | Earl Marmar | IC_EF4 15 A less negative before t=0 (now -1275 A)
|
| Engineering Operator Comments | ||||
| Shot | Time | Type | Status | Comment |
| 1 | 09:01:06:523AM | Plasma | Bad | ALT fault |
| 2 | 09:14:47:423AM | Plasma | Ok | |
| 3 | 09:29:26:427AM | Plasma | Ok | |
| 4 | 09:42:35:910AM | Plasma | Ok | |
| 5 | 09:57:27:397AM | Plasma | Ok | |
| 6 | 10:12:06:003AM | Plasma | Ok | |
| 7 | 10:25:20:053AM | Plasma | Ok | |
| 8 | 10:39:49:100AM | Plasma | Ok | |
| 9 | 10:57:48:763AM | Plasma | Ok | |
| 10 | 11:11:24:793AM | Plasma | Ok | |
| 11 | 11:30:26:247AM | Plasma | Ok | |
| 12 | 11:46:21:933AM | Plasma | Ok | |
| 13 | 11:59:11:150AM | Plasma | Ok | |
| 14 | 12:13:03:027PM | Plasma | Ok | |
| 15 | 12:38:15:123PM | Plasma | Ok | |
| 16 | 01:03:10:493PM | Plasma | Ok | |
| 17 | 01:29:08:383PM | Plasma | Ok | |
| 18 | 01:50:36:107PM | Plasma | Ok | |
| 19 | 02:10:03:910PM | Plasma | Ok | |
| 20 | 02:22:45:987PM | Plasma | Ok | |
| 21 | 02:42:42:300PM | Plasma | Ok | |
| 22 | 02:57:46:313PM | Plasma | Ok | |
| 23 | 03:11:15:750PM | Plasma | Ok | |
| 24 | 03:29:50:100PM | Plasma | Ok | |
| 25 | 03:52:20:990PM | Plasma | Ok | |
| 26 | 04:05:04:100PM | Plasma | Ok | |
| 27 | 04:17:50:160PM | Plasma | Ok | |
| 28 | 04:33:04:943PM | Plasma | Ok | |
| 29 | 04:46:23:253PM | Plasma | Ok | |
| 30 | 04:59:05:740PM | Plasma | Ok | |
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