| Miniproposals | ||||||||||
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| Operators | |
| Session leader(s): | Aaron Bader ,Brian Labombard |
| Physics operator(s): | Jim Irby |
| Engineering operator(s): | Andy Pfeiffer,Bill Cochran,Gary Dekow |
| Engineering Operator Run Comment |
| Finish up MP 562 SL Aaron Bader PO Jim Irby |
| Session Leader Plans |
| Entered: Jul 30 2009 05:45:49:740PM |
| Author: Aaron Bader |
| Finish up MP 562 started yesterday with a density and current scan in He plasmas
1. Start with shot 1090730027. Use the modulated ICRF signal from the same shot 2. We may need a shot or two to get density control, but once density control is established, run a current and density scan by getting 2 shots at each of these conditions. nl04=0.8 *10^20, Ip = 1.0 MA nl04=0.8 *10^20, Ip = 0.6 MA nl04=0.5 *10^20, Ip = 0.6 MA 3. Also may want to get another shot at nl04 = 0.5*10^20 and Ip = 1.0 MA to compare with yesterday when we had deuterium problems. 4. If time, take two more shots at Ip = 0.8 MA at the two densities. 5. If yet more time, switch back to deuterium and try to get data at nl04=0.8*10^20 but it may be very difficult to get good CNPA data in those conditions. |
| Entered: Jul 31 2009 01:21:17:357PM |
| Author: Brian Labombard |
| Run Plan for second half of 1090731 MP#563 "Toroidal asymmetry of impurity seeding in support of ITER divertor gas injection requirements" Goal Perform some scoping studies on the the toroidal variation of divertor radiation in response to N2 puffing. This is support of Phase 0 of MP#563. Approach We will dial up some 1.0 MA dishcarges and begin puffing N2 through various divertor capillaries, adjusting drive pressure as necessary to optimize signals. Initially, we will start with He plasmas, then change to D. RF conditioning will be piggy-backing on these shots, starting at 1.2 seconds. Shot Plan i. Set up 1.0 MA, 5.4 tesla, NL04 ~ 0.6x1020 m-2 Optimize NINJA drive pressures. Vary toroidal puff locations. ii. Vary density. |
| Physics Operators Plans |
| Entered: Jul 30 2009 07:57:24:373PM |
| Author: Jim Irby |
| Run Plan: We will continue Aaron's CNPA run in helium plasmas for the first 1/2 day or so. We will need J-Port antenna only with modulation similar to what we had on the 1090730 run for the first part of the run. However, all transmitters should be prepared for operation since we are not sure what MP will be run following the CNPA run.
----------------- Engineering Setup ----------------- Run begins at 09:00 and ends at 17:00 Power systems as on: 1090730027 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 DISABLED (PG1) leave B-side upper as is Hybrid DISABLED (PG2) fill B-main (C-side) with 40 psi He4 Hybrid enabled (PG3) fill NINJA with 10 psi D2 DISABLED Enable gatevalves and shutters: ECE, VUV, DNB, Z-bolo Torvac gatevalve toggle (yes/no): NO Boronization(yes/no): no Overnight ECDC (yes/no): no ICRF(yes/no): yes LH(yes/no): no DNB(yes/no): no Cryopump (yes/no): no Vessel temperature: 60/60/60 overnight as usual |
| Session Leader Summaries |
| Entered: Aug 2 2009 02:34:09:283PM |
| Author: Aaron Bader |
| Summary for the first half of today's run - Continuation of mapping out the fast-ion decay tail.
We ran helium plasmas in an attempt to further qualify the fast-ion decay tails. We attempted helium densities nl04=0.8 * 10^20 and 0.5 * 10^20 at several different currents (1 MA, 0.6 MA and 0.4 MA) and different ICRF powers. We seem to have found a decay tail dependence on current on the lower density shots, but the calculation was made difficult by a significant worsening of the detector signals throughout the day, making comparisons harder. We ended the day with an ICRF power scan at nl04 = 0.5 * 10^20 and Ip = 0.6 MA, but these shots will be difficult to analyze because of an increasing density throughout the shot, and only one useful CNPA channel. |
| Entered: Aug 3 2009 12:19:02:540PM |
| Author: Brian Labombard |
| Run Summary for second half of 1090731
MP#563 "Toroidal asymmetry of impurity seeding in support of ITER divertor gas injection requirements" This second half run started with shot #19. We stayed with helium plasmas except for the last good shot (33) which was deuterium. The advantage of sticking with helium plasmas was that Matt's Ledge and Wall Box Lyman arrays could be used to monitor N V emission, giving us some nice spatially resolved signals. We puffed N2 gas via two capillary locations, D30-012 and K30-012, slowly increasing the drive pressure shot-by-shot until Matt could see some clear signals on the Ledge and Wall Box arrays. NII and NIII lines were also seen on the Chromex spectrometer, looking at fibers from the K-divertor periscope. We discovered two important behaviors today, which will help in planning experiments for this MP. First, the nitrogen takes a long time to 'pump out' after the capillary turns off - a 100 ms decay time or longer. We tried puffing twice during each shot from the two different capillaries (0.5 and 1.2 seconds with 0.15 seconds puff time after shot#27) but this did not work well. At the second puff, nitrogen from the previous puff was hanging around enhancing the N level and changing divertor conditions. So, we will need to puff just once in future experiments, taking more shots to map things out. Second, despite the fact that capillary D30-012 and K-30-012 differ in toroidal location by 144 degrees, there was no obvious difference in the resultant nitrogen level (NV, NII, or NIII). One could not tell if the puff was close to (K30-012) or far away from (D30-012) the K-port instruments. We will need to look at this more carefully, but we may have a clean and easy result to report to ITER - no significant toroidal variation is seen in injected impurities, even with just one puffer location. 12 PSI N2 was fine for the NINJA fill pressure. We could probably increase this further. Shot log: NINJA setup: 4 psi N2 18-LSN, helium, NL04=0.58, Ip=1.0, Bt=5.4 no gas puffing 19-dies at 0.03 s, K-limiter takes a hit. NINJA 202 torr D30-012 - 0.5s, 0.1s duration - 1.3 torr-liters K30-012 - 0.9s, 0.1s duration - 1.1 torr-l 20-LSN, helium, NL04=0.7, Ip=1.0, Bt=5.4 RF from 1.4 to 1.5 lights up a midplane tile on GH limiter. NINJA 200 torr D30-012 - 0.4s, 0.1s duration - 1.2 torr-liters K30-012 - 0.8s, 0.1s duration - 1.3 torr-l Weak N signals on Chromex Change to 8 PSI N2, 0.2 s duration 21-dies hard early, runaways, K-limiter and AB-limiters take a major hit. 7.7 kJ deposited on a K-limiter tile. NINJA 390 Torr D30-012 - 0.4s, 0.2s duration - 3.5 torr-liters K30-012 - 0.8s, 0.2s duration - 3.0 torr-l 22 - fizzle 23 - fizzle 24 - fizzle 25-LSN, helium, NL04=0.7, Ip=1.0, Bt=5.4 No NINJA puff 26-LSN, helium, NL04=0.9, Ip=1.0, Bt=5.4 NINJA 385 Torr D30-012 - 0.4s, 0.15s duration - 3.2 torr-liters K30-012 - 0.8s, 0.15s duration - 2.7 torr-l puffs arrive at 0.5 and 0.9 seconds Increase NINJA pressure, RF off 27 - fizzle 28-LSN, helium, NL04=0.8 to 0.92, Ip=1.0, Bt=5.4 NINJA 617 Torr D30-012 - 0.4s, 0.15s duration - 5.4 torr-liters K30-012 - 1.1s, 0.15s duration - 4.5 torr-l puffs arrive at 0.5 and 1.2 seconds Divertor Lyman sees puffs. Divertor conditions evolve with Te dropping lower after second puff. Radiation appears to be stronger in divertor on second puff. Change order of puffs - K then D 29 - fizzle 30-LSN, helium, NL04=0.77 to 0.92, Ip=1.0, Bt=5.4 NINJA 597 Torr K30-012 - 0.4s, 0.15s duration - 4.9 torr-liters D30-012 - 1.1s, 0.15s duration - 5.0 torr-l puffs arrive at 0.5 and 1.2 seconds Argon puff was left on at 1.3 seconds.Divertor detaches at 1.35 s. 31 - fizzle Change to D plasma. 32 - fizzle 33-LSN, deuterium, NL04=0.57 to 0.7, Ip=1.0, Bt=5.4 NINJA 578 Torr K30-012 - 0.4s, 0.15s duration - 4.7 torr-liters D30-012 - 1.1s, 0.15s duration - 4.7 torr-l puffs arrive at 0.5 and 1.2 seconds Divertor detaches at second pulse. Change order of capillary puffs. 34 - fizzle. |
| Physics Operator Summaries |
| Entered: Jul 31 2009 05:46:15:083PM |
| Author: Jim Irby |
| We had a lot of fizzles today. Generally fields and gas looked ok, but we had very high runaway levels in the first half of the run. We eventually had a couple of serious early disruptions that had early (t ~ 30 ms) high levels of hards associated with them. We clearly caused some damage to the K and GH limiters (impressive videos). Steve Wolfe suggested going back to the helium startup from last week which solved the runaway problem. It is probably a good idea to continue using helium rather than deuterium for startup from now on (or possibly a gas mixture). We ran helium discharges most of the day, but changed over to deuterium for the last could of discharges. We also puffed nitrogen during the second half of the run, which may have contributed to our fizzle rate (no proof of course). It was a plasma/fizzle/plasma sequence or worse during the second half of the run today. A change in the RCUR offset on shot 33 resulted in a plasma, but then we had a fizzle on shot 34, so not clear if that mattered.
On shot 16 we enabled modified dpcs_fizzle parameters: imported segment 4 from 1090729016 to seg 4 fizzle changes: oh2u, oh2l request to 22 kA, gains from 2 to 4 seg 4 on and async dpcs_fizzle shot from 1090729016 to $shot build seg 4 load Caution should be used by physops in reloads of shots 15, 16, or 17 since they have seg 4 turned on which is used by the dpcs_fizzle routine. dpcs_fizzle $shot was changed to 1090731017 on on shot 18. This modification clearly helped reduce contact resistances of the oh coaxes. They continued falling even during the large number of fizzles we had. We will assess on Monday if we should increase oh2u and oh2l requests more, and if oh1 should also be increased beyond it current 15 kA. score: plasma 01,02,03,04,05,06,08,09,10,12,13,16,17,18,20 21,25,26,28,30,33 fizzles 11,14,15,19 (>100 kA),22,23,24,27,29,31,32,34 dud 07 --- no PLC gas enable |
| Session Leader Comments | |||
| Jul 31 2009 09:13:39:167AM | 1090731001 | Aaron Bader | Good plasma, density pretty good, ICRF power good.
Channel 3 seems to get even less signal than previous. Decay time consistent with what we found on this shot yesterday. Next shot: repeat |
| Jul 31 2009 09:35:00:747AM | 1090731002 | Aaron Bader | Good plasma, density drops a little towards the ened, ICRF power good.
No H/D measurement on this shot which probably means were getting closer to a helium plasma. Next shot: move ICRF pulses back a little where we will have more density control. ICRF pulses will start at 0.75 s and end at 1.35 s. |
| Jul 31 2009 09:42:11:407AM | 1090731003 | Aaron Bader | Good plasma, density more constant over the ICRF pulse train.
Next shot: move current to 0.6 MA |
| Jul 31 2009 10:00:06:733AM | 1090731003 | Aaron Bader | Good plasma, Good ICRF
Channel 3 is pretty much dead at this point, both noise and signal are down. Channels 1 and 2 are both working well though. Neutrons no longer present during ICRF pulses. Next shot: repeat |
| Jul 31 2009 10:13:55:743AM | 1090731004 | Aaron Bader | Good plasma, Good ICRF
We see a faster decay on the fast neutrals, first time we've seen this on different currents. Next shot: repeat |
| Jul 31 2009 10:14:43:277AM | 1090731005 | Aaron Bader | Good plasma, Good ICRF
Again, decay time is fast, hopefully a current effect, but could be a cleaning the machine of deuterium effect. We'll have to check back at 1 MA Next shot: try to lower current more. |
| Jul 31 2009 10:32:15:993AM | 1090731006 | Aaron Bader | Good plasma, Good ICRF
CNPA signal is lower on channel two as well. Opened aperture more. Next shot: try again. |
| Jul 31 2009 10:43:31:987AM | 1090731007 | Aaron Bader | No high voltage on the gas, no plasma
Next shot: try again. |
| Jul 31 2009 11:12:34:100AM | 1090731008 | Aaron Bader | Decay time constants very low, but signal is dropping fast. Not sure why, could be much lower hydrogen concentration.
Next shot: try again |
| Jul 31 2009 11:13:11:523AM | 1090731009 | Aaron Bader | Similar signals to shot 9
Next shot: Go back to 1 MA, see if we can get a reproducible result to earlier. changed aperture back to original setting to compare. |
| Jul 31 2009 11:34:04:040AM | 1090731010 | Aaron Bader | Good shot
Decay times back to longer, though not quite as long as shot 3 earlier. Still, much longer than on the previous shot. Next shot: Lower density to 0.5 * 10^20, and change current to 600 kA |
| Jul 31 2009 11:38:57:340AM | 1090731011 | Aaron Bader | No plasma
Next shot: try again. |
| Jul 31 2009 11:55:33:073AM | 1090731012 | Aaron Bader | Good plasma
Channel 3 still getting ratty signal. Next shot: lower ICRF power to 0.8 MW and hope to see signal. |
| Jul 31 2009 12:18:39:247PM | 1090731013 | Aaron Bader | Good plasma
CNPA signals disturbing, but channel 1 is still holding out Next shot: Raise ICRF power to 2 MW |
| Jul 31 2009 12:24:40:610PM | 1090731014 | Aaron Bader | Fizzle
Next shot: try again at ICRF 2 MW. |
| Jul 31 2009 12:39:14:090PM | 1090731015 | Aaron Bader | Fizzle
Next shot: one more chance at ICRF 2 MW. |
| Jul 31 2009 12:56:09:603PM | 1090731016 | Aaron Bader | Good shot
CNPA channels continue to decay. Channel 1 still seems ok Next shot: return ICRF to 1.2 MW |
| Jul 31 2009 01:07:38:970PM | 1090731017 | Aaron Bader | Good shot, got the comparison shot.
Next shot: switch to Brian's run |
| Jul 31 2009 01:28:46:270PM | 1090731018 | Brian Labombard | 18-LSN, helium, NL04=0.58, Ip=1.0, Bt=5.4 no gas puffing 4 MW RF at 1.2s, He H-mode Next: NL04 ~ 0.8 with NINJA puffs |
| Jul 31 2009 01:52:50:913PM | 1090731019 | Brian Labombard | 19 - dies at 0.03 s, K-limiter takes a runaway hit. Ashes flying in the camera - probably the boron coating... NINJA 202 torr D30-012 - 0.5s, 0.1s duration - 1.3 torr-liters K30-012 - 0.9s, 0.1s duration - 1.1 torr-l Puffs got in with ~.100 s delay |
| Jul 31 2009 02:23:09:147PM | 1090731020 | Brian Labombard | 20-LSN, helium, NL04=0.7, Ip=1.0, Bt=5.4 RF from 1.4 to 1.5 lights up a midplane tile on GH limiter. NINJA 200 torr D30-012 - 0.4s, 0.1s duration - 1.2 torr-liters K30-012 - 0.8s, 0.1s duration - 1.3 torr-l Weak N signals on Chromex |
| Jul 31 2009 02:34:03:157PM | 1090731021 | Brian Labombard | 21- dies hard early, K-limiter and AB-limiters take major hits. 7.7 kJ deposited on a K-limiter tile. NINJA 390 Torr D30-012 - 0.4s, 0.2s duration - 3.5 torr-liters K30-012 - 0.8s, 0.2s duration - 3.0 torr-l |
| Jul 31 2009 03:12:08:060PM | 1090731025 | Brian Labombard | 25-LSN, helium, NL04=0.7, Ip=1.0, Bt=5.4 No NINJA Next: NL04 ~ 0.9, NINJA on |
| Jul 31 2009 03:37:13:750PM | 1090731026 | Brian Labombard | 26-LSN, helium, NL04=0.9, Ip=1.0, Bt=5.4 NINJA 385 Torr D30-012 - 0.4s, 0.15s duration - 3.2 torr-liters K30-012 - 0.8s, 0.15s duration - 2.7 torr-l puffs arrive at 0.5 and 0.9 seconds |
| Jul 31 2009 04:07:26:587PM | 1090731028 | Brian Labombard | 28-LSN, helium, NL04=0.8 to 0.92, Ip=1.0, Bt=5.4 NINJA 617 Torr D30-012 - 0.4s, 0.15s duration - 5.4 torr-liters K30-012 - 1.1s, 0.15s duration - 4.5 torr-l puffs arrive at 0.5 and 1.2 seconds Divertor Lyman sees puffs. Divertor conditions evolve, with Te dropping lower after second puff. Radiation appears to be stronger in divertor on second puff. Next: Change order of puffs - K then D |
| Jul 31 2009 04:41:24:580PM | 1090731030 | Brian Labombard | 30-LSN, helium, NL04=0.77 to 0.92, Ip=1.0, Bt=5.4 NINJA 597 Torr K30-012 - 0.4s, 0.15s duration - 4.9 torr-liters D30-012 - 1.1s, 0.15s duration - 5.0 torr-l puffs arrive at 0.5 and 1.2 seconds. Argon puff was left on at 1.3 seconds. Divertor detaches at 1.35 s. Next: take another shot and then go to deuterium plasma |
| Jul 31 2009 05:11:44:917PM | 1090731033 | Brian Labombard | 33-LSN, deuterium, NL04=0.57 to 0.7, Ip=1.0, Bt=5.4 NINJA 578 Torr K30-012 - 0.4s, 0.15s duration - 4.7 torr-liters D30-012 - 1.1s, 0.15s duration - 4.7 torr-l puffs arrive at 0.5 and 1.2 seconds Divertor detaches at second pulse. |
| Physics Operator Comments | |||
| Jul 31 2009 09:16:30:607AM | 1090731001 | Jim Irby | load from 1090730027 --- 152.8kA, 24 ms fill, 1 MA, 8e19/m^3
open tree done plasma into rampdown -- neuts/hards above 10e12 early h_alpha down a factor of 2 or 3 at 0.1 s compared to shot 27 CIII down somewhat also h/(h+d) 35% at 1.075 s |
| Jul 31 2009 09:30:04:790AM | 1090731002 | Jim Irby | no DPCS changes
plasma into rampdown neuts/hards offscale |
| Jul 31 2009 09:42:35:313AM | 1090731003 | Jim Irby | no DCPS changes --- see what neuts will do
Aaron has asked for a delay in the rf pulses to better match density plasma into rampdown neuts becoming a square pulse |
| Jul 31 2009 10:01:34:797AM | 1090731004 | Jim Irby | Ip to 600 kA from 1000 kA
pg3 early pulse start from 16 ms to 13 ms open tree done plasma into rampdown --- 600 kA, neuts better but still saturated neutrons rate showing very little change during rf pulses |
| Jul 31 2009 10:17:31:450AM | 1090731005 | Jim Irby | no changes
plasma into rampdown |
| Jul 31 2009 10:31:27:930AM | 1090731006 | Jim Irby | Ip from 600 to 400 kA (I hope)
open tree done plasma into rampdown --- got 400 kA neuts/hards out of saturation |
| Jul 31 2009 10:44:38:830AM | 1090731007 | Jim Irby | no changes
but no HV PLC enable on the gas system?? dud |
| Jul 31 2009 11:01:56:030AM | 1090731008 | Jim Irby | try again --- no changes --- nothing found on PLC
plasma into rampdown |
| Jul 31 2009 11:10:40:477AM | 1090731009 | Jim Irby | repeat
Plasma into rampdown Brian notices changes in equilibrium with rf pulses |
| Jul 31 2009 11:32:16:900AM | 1090731010 | Jim Irby | going back to 1000 kA
load from 1090731003 open tree done plasma into rampdown |
| Jul 31 2009 03:13:30:530PM | 1090731011 | Jim Irby | loaded from 1090731005 --- back to 600 kA
nl04 request from 0.8e20 to 0.5e20/m^2 open tree done fizzle -- two bounces |
| Jul 31 2009 11:57:40:417AM | 1090731012 | Jim Irby | prefill from 24 to 25 ms
open tree done plasma into rampdown -- still a little bounce |
| Jul 31 2009 12:13:55:807PM | 1090731013 | Jim Irby | prefill to 26 ms from 25 ms
open tree done Aaron asking for less rf power plasma into rampdown --- almost lost it --- hesitation at 15 ms |
| Jul 31 2009 12:26:10:520PM | 1090731014 | Jim Irby | prefill back to 25 ms from 26 ms
fizzle --- put gas back |
| Jul 31 2009 12:43:41:657PM | 1090731015 | Jim Irby | prefill back to 26 ms from 25
open tree done imported segment 4 from 1090729016 to seg 4 fizzle changes: oh2u, oh2l request to 22 kA, gains from 2 to 4 (seg 4 off and not loaded for this shot) fizzle! |
| Jul 31 2009 12:59:50:933PM | 1090731016 | Jim Irby | br0 from 0.0005 to 0.0000 T
open tree done prefill from 26 to 27 ms changes made to fizzle: imported segment 4 from 1090729016 to seg 4 fizzle changes: oh2u, oh2l request to 22 kA, gains from 2 to 4 seg 4 on and async dpcs_fizzle shot from 1090729016 to $shot build seg 4 load open tree done plasma into rampdown OHs swing up to 20 kA ---ok |
| Jul 31 2009 01:08:47:363PM | 1090731017 | Jim Irby | repeat |
| Jul 31 2009 01:25:26:657PM | 1090731018 | Jim Irby | import seg 2 from 1090731001 into seg 2 ---- 1000 kA
import seg 4 from 1090731001 into seg 4 seg 4 turned off nl04 request to 0.6e20 from 0.8e20/m^3 dpcs_fizzle $shot changes to 1090731017 session leader switch from Aaron to Brian plasma into rampdown --- helium h-mode --- 4 MW ICRF --- 113 kJ |
| Jul 31 2009 03:12:43:903PM | 1090731019 | Jim Irby | nl04 request from 0.6 to 0.8e19/m^2
open tree done pseudo-fizzle at 115 kA level --- shrapnel from disruption: k-limter lost some boron. ---- large neuts/hards very early (20 ms) |
| Jul 31 2009 02:04:04:497PM | 1090731020 | Jim Irby | no changes
plasma into rampdown --- 4.5 MW of rf --- lots of neuts/hards |
| Jul 31 2009 02:19:50:630PM | 1090731021 | Jim Irby | pg3 seg 1 puff start from 13 to 11 ms
open tree done nitrogen puff should be seen from about 0.5 to 0.9 s 600 kA disruption at 0.63 s ---- current never rises properly. Early, saturated neuts/hards hit k-limiter hard --- 160C delta --- lots of light |
| Jul 31 2009 02:35:36:780PM | 1090731022 | Jim Irby | pumped out and then filled b-top with 6 psi He4
import seg 1 from 1090724009 into seg 4 prefill from 24 to 22 ms open tree done fizzle |
| Jul 31 2009 02:46:50:603PM | 1090731023 | Jim Irby | prefill from 22 to 20 ms
open tree done fizzle --- even less current than on 22 |
| Jul 31 2009 02:56:39:940PM | 1090731024 | Jim Irby | prefill from 21 to 23 ms
open tree done asked that nitrogen puff be turned off until we get a plasma fizzle |
| Jul 31 2009 03:11:51:280PM | 1090731025 | Jim Irby | ef4 from -1290 to -1310
open tree done plasma into rampdown --- neuts/hards factor of 100 down |
| Jul 31 2009 03:27:25:883PM | 1090731026 | Jim Irby | nl04 request to 0.9e19/m^2
open tree done ninja back on plasma into rampdown |
| Jul 31 2009 04:41:14:440PM | 1090731027 | Jim Irby | no changes
fizzle |
| Jul 31 2009 04:00:04:190PM | 1090731028 | Jim Irby | no changes --- fields and gas looked ok
plasma --- 400 kA disruption at 1.81 s --- no icrf so that second puff could be seen. |
| Jul 31 2009 04:08:15:650PM | 1090731029 | Jim Irby | no changes
fizzle --- last disruption? fields fine, gas ok, hit something at 13.5 ms |
| Jul 31 2009 04:25:42:960PM | 1090731030 | Jim Irby | no changes
plasma --- 700 kA disruption at 1.64 s --- detach late |
| Jul 31 2009 04:31:21:213PM | 1090731031 | Jim Irby | argon puff off
prefill from 23 to 21 ms open tree done we got our fizzle |
| Jul 31 2009 04:48:32:070PM | 1090731032 | Jim Irby | pumpout and then fill b-main with 40 psi D2
leave 6 psi He4 in b-top fizzle --- we are hitting something at 14 ms again Steve suggests RCUR mod |
| Jul 31 2009 05:07:02:240PM | 1090731033 | Jim Irby | RCUR offset from 2000 to 1000
open tree done plasma into rampdown --- H_alpha about a factor of two larger neuts/hards around 8e12 --- not bad |
| Jul 31 2009 05:46:10:473PM | 1090731034 | Jim Irby | repeat
fizzle --- what a surprise |
| Engineering Operator Comments | ||||
| Shot | Time | Type | Status | Comment |
| 1 | 09:00:43:047AM | Plasma | Ok | |
| 2 | 09:20:33:733AM | Plasma | Ok | |
| 3 | 09:37:07:823AM | Plasma | Ok | |
| 4 | 09:54:04:167AM | Plasma | Ok | |
| 5 | 10:06:32:240AM | Plasma | Ok | |
| 6 | 10:20:51:140AM | Plasma | Ok | |
| 7 | 10:41:02:720AM | Plasma | Bad | no gas |
| 8 | 10:53:57:277AM | Plasma | Ok | |
| 9 | 11:06:46:910AM | Plasma | Ok | |
| 10 | 11:22:59:063AM | Plasma | Ok | |
| 11 | 11:36:56:167AM | Plasma | Ok | |
| 12 | 11:49:38:710AM | Plasma | Ok | |
| 13 | 12:05:56:580PM | Plasma | Ok | |
| 14 | 12:22:28:343PM | Plasma | Ok | |
| 15 | 12:37:11:637PM | Plasma | Ok | |
| 16 | 12:50:53:740PM | Plasma | Ok | |
| 17 | 01:04:39:343PM | Plasma | Ok | |
| 18 | 01:17:24:697PM | Plasma | Ok | |
| 19 | 01:33:34:680PM | Plasma | Ok | |
| 20 | 01:50:22:427PM | Plasma | Ok | |
| 21 | 02:08:59:800PM | Plasma | Ok | |
| 22 | 02:27:43:573PM | Plasma | Ok | |
| 23 | 02:41:08:397PM | Plasma | Ok | |
| 24 | 02:54:27:250PM | Plasma | Ok | |
| 25 | 03:07:05:633PM | Plasma | Ok | |
| 26 | 03:19:47:220PM | Plasma | Ok | |
| 27 | 03:37:19:690PM | Plasma | Ok | |
| 28 | 03:51:02:417PM | Plasma | Ok | |
| 29 | 04:03:50:757PM | Plasma | Ok | |
| 30 | 04:16:35:063PM | Plasma | Ok | |
| 31 | 04:29:16:980PM | Plasma | Ok | |
| 32 | 04:42:04:707PM | Plasma | Ok | |
| 33 | 04:54:54:187PM | Plasma | Ok | |
| 34 | 05:07:33:307PM | Plasma | Ok | |
| System Availability | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Jul 31 2009 09:00:25:017AM | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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