| Miniproposals | ||||||||||
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| Operators | |
| Session leader(s): | Martin Greenwald,Brian Labombard |
| Physics operator(s): | Jim Irby |
| Engineering operator(s): | Andy Pfeiffer,Bill Byford,Gary Dekow |
| Engineering Operator Run Comment |
| automatically entered by signon - please replace with real comment |
| Session Leader Plans |
| Entered: Aug 5 2009 01:49:55:403PM |
| Author: Brian Labombard |
| Run Plan for second half of 1090806 (starts around 1:00 pm, local time)
MP#563 "Toroidal asymmetry of impurity seeding in support of ITER divertor gas injection requirements" Goal We will be performing part 1.B of this minproposal today - Ohmic L-Mode Density Scan. This involves setting up a reference discharge (1.0 MA, 5.4 Tesla, NL04 ~ 0.9e20) and puffing N2 at it from various diviertor floor capillaries. This should be a boring run from the Phys-Op's perspective. Setup NINJA should be filled to 12 PSI N2. Reload shot#1090731033. Program density to NL04 ~ 0.8e20. No ICRF. Shot Plan i. Set up 1.0 MA, 5.4 tesla, NL04 ~ 0.8e20 m-2 Take a shot without N2 injection. Set up NINJA to puff N2 starting at 0.8 seconds for 0.2 seconds duration. Verify that N diagnostic signals are good: Chromex, VUV, CXRS (NV) Run through the capillary sequence (one shot for each): K30-012 D30-012 H30-012 B30-012 F30-012 Take a shot without N2 puff. Run through capillary sequence again (or a sparser set) ii. Increase density to achieve partial detachment prior to puff (NL04 ~ 1.2) Compare puffs through capillaries: K30-012 D30-012 |
| Entered: Aug 6 2009 08:53:59:383AM |
| Author: Martin Greenwald |
| The experiment that look at the interplay of fueling, transport and the
density limit. We're covering te first part of MP 560: 1. How does the temperature profile, on closed field lines, evolve as the density limit is approached? We will operate at nominal current ~ 0.8 MA, 5.3T - ramp density to limit w/ strong gas puffing and accumulate enough TS and probe data in reproducible shots to get the edge Te profile evolution. Weâ??re interested in the profile from r/a ~ 0.8-1.0 We'll start with a "typical" LSN equilibrium from this campaign - this may also be tweaked to get the best coverage with the edge Thomson system.After we get a reproducible density limit discharge, we'll collect data from the Thomson and use the scanning probes for the SOL profiles - these latter need not scan deeply (as in the past). There should be enough variability in the density evolution to get a "scan" over time. If necessary, we can change the gas programming to ensure this. Data from the Ly and bolometer arrays will also be collected. These shots should also provide TS density calibrations via ECE cut-off. If we don't get all the way to the core, we would lower the field for the last couple of shots. |
| Physics Operators Plans |
| Entered: Aug 5 2009 04:14:09:780PM |
| Author: Jim Irby |
| Session leaders: Greenwald, Pitts, LaBombard
Physop: Irby ----------------- Engineering Setup ----------------- Run begins at 09:00 and ends at 17:00 Power systems as on: 1090805015 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) fill B-side upper with 40 psi D2 Hybrid enables (PG2) fill B-main (C-side) with 40 psi D2 Hybrid enabled (PG3) fill NINJA with 40 psi D2 DISABLED Enable gatevalves and shutters: ECE, VUV, Z-bolo Torvac gatevalve toggle (yes/no): no Boronization(yes/no): no Overnight ECDC (yes/no): YES ICRF(yes/no): no LH(yes/no): no DNB(yes/no): no Cryopump (yes/no): no Vessel temperature: 60/60/60 overnight ------------------------------ ECDC Parameters ------------------------------ gas and pressure: D2 at 2e-4 Torr sweep: 44/45/103 cm scan: 20/120 s |
| Session Leader Summaries |
| Entered: Aug 6 2009 03:16:57:810PM |
| Author: Martin Greenwald |
| Moderate success. Puffing with the piezo valves led either to disruptions or insufficient density rise. Plasma light was very high making analysis of the TS data difficult.
We then switched to the ninja system, using capillaries near the inner divertor nose. 40 psi turned out to be too high a fill pressure - the best results were at about 25 psi. Shot 12 was the best shot reach 94% of the density limit at the disruption. The TS data will require non-automated analysis to make best use of the data. Additional time, perhaps after the machine is better conditioned, might be fruitful. The higher density shots could be used for TS density calibration Shots for further analysis 1090806010 n/nlimit ~ 0.7 1090806011 n/nlimit ~ 0.67 1090806012 n/nlimit ~ 0.94 1090806015 n/nlimit ~ 0.65 1090806016 n/nlimit ~ 0.8 |
| Entered: Aug 6 2009 10:53:26:473PM |
| Author: Brian Labombard |
| Run Summary for second half of 1090806
MP#563 "Toroidal asymmetry of impurity seeding in support of ITER divertor gas injection requirements" This half day run began with shot #19. We kept to the run plan, executing a series of identical 1.0 MA, 5.4 Tesla, NL04 ~ 0.8e20 discharges with N2 puffing from one of the five capillaries in the divertor floor. The idea was to look for changes in N levels, correlated to the toroidal location of the puff. The plan was executed almost flawlessly. Shots 20 and 31 were baseline shots (no NINJA puff). Shots 21 - 30 had N2 puffs, one per shot, from floor capillaries K, D, H, B, and F and then repeating that same sequence. Trigger time was 0.8 seconds for a duration of 0.2 seconds. The gas hit the plasma around 0.9 seconds, depending on which capillary was fired. (The different arrival times are probably caused by unique delays in the drive solenoids - this will be investigated in off-line tests.) The plan was executed 'almost flawlessly' because shot#25 had a lower density that all the others, NL04 ~ 0.74e20. Apparently this is due to the end-of-shot disruption on shot#24, which probably degassed the walls. As a result of the lower discharge density, the pressure rise in the divertor in response to the N2 puff as measured by the CB_DivL Penning gauge, was lower in shot#25 than when the shot was repeated (#30). Perhaps we should have repeated this shot before moving on (my fault). During the run, Matt monitored closely the NV signals on three K-port divertor periscope fibers. At first, we thought we saw some correlations with gas puff location. It quickly became apparent that the variations were more associated with the 'degree of detachment' of the outer divertor. In some shots, Te near the strike point was lower (~3 eV) than others (~7eV), apparently causing the NV radiation to reduce in the divertor's private flux region and increase just above the X-pt, while the X-pt NV radiation (the dominant signal by far) remained about the same. Associate with this, plasma's Zeff tended to be higher when the divertor strike point was becoming detached. We have seen this before (see J. Goetz, et al.) - the screening of N2 by the divertor plasma decreases when the divertor detaches. So, the shot-to-shot variation in NV signals had more to do with subtle shot-to-shot variations in divertor power balance. Not surprisingly then, no correlation between NV signals levels and toroidal location of N2 injection was detected. In contrast, we saw clear correlations between the divertor pressure rise measured by the CB_DivL Penning gauge and the toroidal puff location. Puffing gas at D or B lead to higher divertor pressures on this gauge compared to K, H and F. So it appears that the gas is toroidally asymmetric but the NV radiation is not. (We need to do some off-line testing of the NINJA puff rates to assess possible differences in the gas flow rate among capillaries before any firm conclusions should be made.) We would expect that lower ionization states (NII and NIII) might also show some dependence on puff location. Certainly, the gas must ionize preferentially near the puff. These data were collected today by the Chromex spectrometer. Matt is going to take a look at these... The final shot (#32), taken after 5:00 pm today, was not a fizzle. It was a higher density plasma (NL04 ~ 1.0e20) with the standard N2 puff from D30-012. Prior to the puff, the divertor was already in a high-recycling regime, so the perturbation from the N2 puff was less. We will need to schedule some NINJA shot-cycle test shots (next Monday) with the gate-valves closed in order to assess the N2 flow rates from each of the capillaries. Quick shot log: 19 -LSN, 1.0 MA, 5.4T, NL04 = 0.6 - 0.68 No NINJA 20 -LSN, 1.0 MA, 5.4T, NL04 = 0.74 - 0.8 No NINJA 21 -LSN, 1.0 MA, 5.4T, NL04 ~ 0.77 - 0.79 NINJA 581 torr, Trigger 0.8, Duration: 0.2 Capillary: K30-012, Torr-Liters: 4.7 Gas arrives at 0.95, according to CB_DivL Penning gauge Divertor changes to high-recycling at that time. 22 -LSN, 1.0 MA, 5.4T, NL04 ~ 0.78 - 0.8 NINJA 580 torr, Trigger 0.8, Duration: 0.2 Capillary: D30-012, Torr-Liters: 5.1 Higher pressure on CB_DivL 23 -LSN, 1.0 MA, 5.4T, NL04 ~ 0.78 - 0.8 NINJA 579 torr, Trigger 0.8, Duration: 0.2 Capillary: H30-012, Torr-Liters: 4.8 24 -LSN, 1.0 MA, 5.4T, NL04 ~ 0.78 - 0.8 NINJA 578 torr, Trigger 0.8, Duration: 0.2 Capillary: B30-012, Torr-Liters: 5.1 25 -LSN, 1.0 MA, 5.4T, NL04 ~ 0.74 NINJA 578 torr, Trigger 0.8, Duration: 0.2 Capillary: F30-012, Torr-Liters: 5.1 26 -LSN, 1.0 MA, 5.4T, NL04 ~ 0.76 - 0.78 NINJA 577 torr, Trigger 0.8, Duration: 0.2 Capillary: K30-012, Torr-Liters: 4.8 27 -LSN, 1.0 MA, 5.4T, NL04 ~ 0.76 - 0.79 NINJA 576 torr, Trigger 0.8, Duration: 0.2 Capillary: D30-012, Torr-Liters: 5.3 28 -LSN, 1.0 MA, 5.4T, NL04 ~ 0.78 - 0.79 NINJA 574 torr, Trigger 0.8, Duration: 0.2 Capillary: H30-012, Torr-Liters: 4.9 29 -LSN, 1.0 MA, 5.4T, NL04 ~ 0.77 NINJA 574 torr, Trigger 0.8, Duration: 0.2 Capillary: B30-012, Torr-Liters: 5.2 30 -LSN, 1.0 MA, 5.4T, NL04 ~ 0.77 NINJA 574 torr, Trigger 0.8, Duration: 0.2 Capillary: F30-012, Torr-Liters: 5.0 31 -LSN, 1.0 MA, 5.4T, NL04 ~ 0.78 - 0.8 No NINJA 32 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.0 NINJA 574 torr, Trigger 0.8, Duration: 0.2 Capillary: D30-012, Torr-Liters: 5.1 |
| Physics Operator Summaries |
| Entered: Aug 6 2009 05:43:21:797PM |
| Author: Jim Irby |
| The machine ran extremely well today. Almost no tweaks were required by
the physop to maintain a good startup. Recovery from disruptions was also extremely robust (no changes were made to the startup following any of the disruptions). We had one fizzle (shot 17), after which a very minor adjustments to EF4 and the pre-puff were made. We then had plasmas for the rest of the run. We went back to a D2 startup today because of concerns about disruption recovery with helium prefills. Adjustments to the seg 1 pg3 programming kept the hards at a low level. The first half of the run today (shots 1 to 19) was devoted to a study of density limits (MP560). We used primarily NINJA D2 puffing to reach line integrated densities as high as 3e20/m^2. We had difficulty exceeding this value because the EF1 and OH supplies reached their voltage and current limits. nl04 requests of up to 4e20/m^2 were programmed. For the first couple of tries at this level I had the density ramp rate too high, and we generated a serious MARFE and eventual disruption. We eventually dropped the request back down to 1e20/m^2 since it was clear that the NINJA could handle whatever fueling was required. For the first couple of discharges we also used pg2 (b-side upper)to push up the density. Shot 2 showed a very interesting fluctuation on TCI associated with this gas puff. Again, this puff was not needed when the NINJA came on line. Because the high density required by MP560 resulted in higher demands on the OH and EF1 supplies, we reached limits in both voltage and current, and an interaction with the dpcs_fizzle program caused oscillations on the OH supplies. We went back for a few shots to the original dpcs_fizzle ref shot (1060308026), and stopped the oscillation, but the oh coax resistances began to increase. Since the second half of the run day was much less demanding on the supplies, we returned to the most recent ref shot (1090731017) with no oscillation. The oh coax resistances dropped quickly following this change. Shifting to MP563 was from the physop standpoint rather painless. We had nothing but plasmas from shot 19 to the end of the run (shot 32). We had some difficulty keeping the vessel temps at reasonable levels today (big display as low as -12C). Because of the long TF pulses needed by the dpcs_fizzle program, and slow cooling on one of the quad arms, large amounts of LN2 were being expended. Gary will investigate. The #2 alternator bearing vibration levels were back to their normal, low values today. No delays caused by alternator issues. Score: fizzle 17 plasmas 01-16,18-32 no duds |
| Session Leader Comments | |||
| Aug 6 2009 09:38:13:387AM | 1090806001 | Martin Greenwald | Plasma, density only to 2e20 more gas needed
Adjusting equilibrium to put more edge TS channels inside LCFS |
| Aug 6 2009 09:54:44:947AM | 1090806002 | Martin Greenwald | Disrupts but density still well below the limit
nebar ~ 2.6e20 |
| Aug 6 2009 10:11:13:490AM | 1090806003 | Martin Greenwald | disrupts very early
use ninja for fueling on next shot |
| Aug 6 2009 10:22:57:390AM | 1090806004 | Martin Greenwald | disrupts early again |
| Aug 6 2009 10:36:16:493AM | 1090806005 | Martin Greenwald | lasts a bit longer, but disrupts before ninja could have much effect |
| Aug 6 2009 11:01:14:513AM | 1090806007 | Martin Greenwald | similar to last shot |
| Aug 6 2009 11:28:36:993AM | 1090806009 | Martin Greenwald | reduced ninja pulse length - discharge lasted to 1.2 sec
density to 2.6 n/nlimit ~ 0.5 |
| Aug 6 2009 11:43:42:833AM | 1090806010 | Martin Greenwald | disrupted early in current ramp-down
marfe at 1.2 sec greater than 50% of the limit during flattop |
| Aug 6 2009 11:59:28:237AM | 1090806011 | Martin Greenwald | disrupts at rampdown again
density peaks at 3.4e20 about 65% of limit |
| Aug 6 2009 12:14:17:453PM | 1090806012 | Martin Greenwald | Disrupts during flat-top
density to 4.6, 94% of the limit |
| Aug 6 2009 12:22:07:457PM | 1090806013 | Martin Greenwald | disrupted very early |
| Aug 6 2009 12:43:01:457PM | 1090806014 | Martin Greenwald | ninja pressure raised to 30 psi
disrupts at 0.7, density at 0.85 of limit probably a little too aggressive with gas |
| Aug 6 2009 12:52:34:560PM | 1090806015 | Martin Greenwald | disrupted at 1. second
only at 65% of limit |
| Aug 6 2009 01:05:16:803PM | 1090806016 | Martin Greenwald | Lasts til 1.5 sec
density at 4.e20, 85% of limit |
| Aug 6 2009 01:35:50:577PM | 1090806018 | Martin Greenwald | only reached about 2.5e20
end of MP for today |
| Aug 6 2009 01:37:36:157PM | 1090806019 | Brian Labombard | Change to MP#563 "Toroidal asymmetry of impurity seeding in support of ITER divertor gas injection requirements" |
| Aug 6 2009 01:49:08:570PM | 1090806019 | Brian Labombard | 19 -LSN, 1.0 MA, 5.4T, NL04 = 0.6 - 0.68 No NINJA Next: adjust to NL04 ~0.8, no NINJA |
| Aug 6 2009 02:01:19:173PM | 1090806020 | Brian Labombard | 20 -LSN, 1.0 MA, 5.4T, NL04 = 0.74 - 0.8 No NINJA Next: Start divertor puff sequence |
| Aug 6 2009 02:21:39:860PM | 1090806021 | Brian Labombard | 21 -LSN, 1.0 MA, 5.4T, NL04 ~ 0.77 - 0.79 NINJA 581 torr, Trigger 0.8, Duration: 0.2 Capillary: K30-012, Torr-Liters: 4.7 Gas arrives at 0.95, according to CB_DivL Penning gauge Divertor detaches at that time. |
| Aug 6 2009 02:34:37:513PM | 1090806022 | Brian Labombard | 22 -LSN, 1.0 MA, 5.4T, NL04 ~ 0.78 - 0.8 NINJA 580 torr, Trigger 0.8, Duration: 0.2 Capillary: D30-012, Torr-Liters: 5.1 Higher pressure on CB_DivL |
| Aug 6 2009 02:48:52:320PM | 1090806023 | Brian Labombard | 23 -LSN, 1.0 MA, 5.4T, NL04 ~ 0.78 - 0.8 NINJA 579 torr, Trigger 0.8, Duration: 0.2 Capillary: H30-012, Torr-Liters: 4.8 |
| Aug 6 2009 03:01:43:063PM | 1090806024 | Brian Labombard | 24 -LSN, 1.0 MA, 5.4T, NL04 ~ 0.78 - 0.8 NINJA 578 torr, Trigger 0.8, Duration: 0.2 Capillary: B30-012, Torr-Liters: 5.1 |
| Aug 6 2009 03:22:38:783PM | 1090806025 | Brian Labombard | 25 -LSN, 1.0 MA, 5.4T, NL04 ~ 0.74 NINJA 578 torr, Trigger 0.8, Duration: 0.2 Capillary: F30-012, Torr-Liters: 5.1 |
| Aug 6 2009 03:36:30:170PM | 1090806026 | Brian Labombard | 26 -LSN, 1.0 MA, 5.4T, NL04 ~ 0.76 - 0.78 NINJA 577 torr, Trigger 0.8, Duration: 0.2 Capillary: K30-012, Torr-Liters: 4.8 |
| Aug 6 2009 03:57:11:077PM | 1090806027 | Brian Labombard | 27 -LSN, 1.0 MA, 5.4T, NL04 ~ 0.76 - 0.79 NINJA 576 torr, Trigger 0.8, Duration: 0.2 Capillary: D30-012, Torr-Liters: 5.3 |
| Aug 6 2009 04:52:48:930PM | 1090806028 | Brian Labombard | 28 -LSN, 1.0 MA, 5.4T, NL04 ~ 0.78 - 0.79 NINJA 574 torr, Trigger 0.8, Duration: 0.2 Capillary: H30-012, Torr-Liters: 4.9 |
| Aug 6 2009 04:53:00:400PM | 1090806029 | Brian Labombard | 29 -LSN, 1.0 MA, 5.4T, NL04 ~ 0.77 NINJA 574 torr, Trigger 0.8, Duration: 0.2 Capillary: B30-012, Torr-Liters: 5.2 |
| Aug 6 2009 04:55:33:590PM | 1090806030 | Brian Labombard | 30 -LSN, 1.0 MA, 5.4T, NL04 ~ 0.77 NINJA 574 torr, Trigger 0.8, Duration: 0.2 Capillary: F30-012, Torr-Liters: 5.0 |
| Aug 6 2009 05:14:56:573PM | 1090806031 | Brian Labombard | 31 -LSN, 1.0 MA, 5.4T, NL04 ~ 0.78 - 0.8 No NINJA |
| Aug 6 2009 05:15:11:620PM | 1090806032 | Brian Labombard | 32 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.0 NINJA 574 torr, Trigger 0.8, Duration: 0.2 Capillary: D30-012, Torr-Liters: 5.1 |
| Physics Operator Comments | |||
| Aug 6 2009 09:29:47:507AM | 1090806001 | Jim Irby | ****
Alternator will be 30 minutes late in startup this morning. We will still closeup at 8:30, but then allow controlled access until we are ready to start. **** Setting up for MP560 (Greenwald) TF rampdown start from 1.5 to 2.0 s (for first few shots) TF invert 2 s, delay 600 ms OH invert 2.3 s, delay 500 ms Fizzle from 0.08 to 2.1 s dpcs_fizzle ref shot 1090731017 Ip from 1.2 to 0.8 MA nl04 request to 1e20/m^2 open tree done prefill gas is D2 (disruption recovery): prefill from 14 to 18 ms open tree done pg3 puff from 18 to 23 ms in seg 1 for hards open tree done pg2 puff from 0.5 to 1.0 s at 100% open tree done plasma into rampdown pg2 opened, but very little effect on density lots of hards --- pg3 puff too narrow |
| Aug 6 2009 09:52:46:993AM | 1090806002 | Jim Irby | pg2 from 18 to 100 ms at 100%
ZXU from 0.05 by 0.3 s to 0.03 by 0.3 s (move plasma a little for a better Thomson view) open tree done pg2 from 0.2 to 1.5 s at 100% open tree done plasma for 1.4 s --- lots of h-alpha |
| Aug 6 2009 10:10:30:367AM | 1090806003 | Jim Irby | nl04 from 1 to 4e20/m^2
open tree done shot 2 was limited by OH rail --- primarily OH1 OH limits (positive current) from [-27,-26,-26] to [-35,-35,-35] [0H1,OH2L,OH2U] plasma for 0.2 s --- asked for too much nl04 early |
| Aug 6 2009 10:28:53:223AM | 1090806004 | Jim Irby | nl04 ramp rate decreased. Peak at 4e20/m^2 at 0.5 s instead of 0.2 s
pg2 gas turned off --- replace with NINJA plasma for 0.24 s --- still too fast a density ramp |
| Aug 6 2009 10:39:48:403AM | 1090806005 | Jim Irby | nl04 request slowed down still more
pg3 puff in seg 1 from a square pulse to a ramp open tree done plasma for > 0.5 s --- looks like NINJA killed it |
| Aug 6 2009 10:55:32:790AM | 1090806006 | Jim Irby | Another adjustment to PG3 seg one puff to help hards (we hope)
prefill from 20 to 23 ms loaded plasma 0.55 s --- MARFE early and late |
| Aug 6 2009 11:04:16:323AM | 1090806007 | Jim Irby | pg3 seg 1 gas reduced by starting rampdown earlier
loaded plasma for 0.527 s --- NINJA was at 0.7 s |
| Aug 6 2009 11:19:39:117AM | 1090806008 | Jim Irby | nl04 request to 1e20/m^2 --- Let NINJA kill it
plasma for 0.8 s --- NINJA?? neuts/hards ok |
| Aug 6 2009 11:31:55:933AM | 1090806009 | Jim Irby | no DPCS changes ---- Brian makes some adjustments to the NINJA
|
| Aug 6 2009 11:46:05:227AM | 1090806010 | Jim Irby | ZXU from 0.03 to 0.02 cm --- tweak Thomson view
loaded Brian/Ronald drop NINJA pressure to 18.5 psi from ~38 psi plasma for 1.6 s Oscillation on OH2 currents after disruption --- dpcs_fizzle issue |
| Aug 6 2009 11:53:58:607AM | 1090806011 | Jim Irby | ZCUR from -0.015 to -0.010 cm
plasma to 1.53 s --- More NINJA for this shot |
| Aug 6 2009 12:16:24:970PM | 1090806012 | Jim Irby | no dpcs changes
plasma for 1.373 s oh1 and ef1 at voltage limits |
| Aug 6 2009 12:35:34:140PM | 1090806013 | Jim Irby | no dpcs changes
plasma for only 0.346 s --- but in trouble by 70 or 80 ms looks like something dropped in --- 2pi up to 3 MW by 0.1 s commutation failures --- into cell to check no fuses blown --- all OHs checked |
| Aug 6 2009 12:39:57:627PM | 1090806014 | Jim Irby | no dpcs changes --- we will change dpcs_fizzle ref shot for next shot
plasma for 0.70 s |
| Aug 6 2009 12:56:01:610PM | 1090806015 | Jim Irby | loaded 1060308026 into dpcs_fizzle ref shot --- lower gain, but also lower current limits. May make adjustments to 1090731017 ref shot when there is time or if coax resistances increase.
no other dpcs changes, but NINJA pressure down to 26 psi loaded plasma for 1.01 s ---- injection may have killed plasma oscillation gone on the oh supplies --- but didn't exceed fizzle current neuts/hards at 2e13 by 100 ms |
| Aug 6 2009 01:11:52:857PM | 1090806016 | Jim Irby | try again w/o injection
a little more gas in seg 1 (full on for 5 more ms) --- loaded plasma for 1.49 s --- power supply current limits? |
| Aug 6 2009 01:21:53:457PM | 1090806017 | Jim Irby | no dcps changes
fizzle --- |
| Aug 6 2009 01:40:25:860PM | 1090806018 | Jim Irby | ef4 from -1295 to -1300 A
prefill from 23 to 24 ms loaded plasma for 0.7513 s h/(h+d) was at the 3 to 5% level today going to Brian/Pitts run |
| Aug 6 2009 01:49:19:773PM | 1090806019 | Jim Irby | loaded 1090731033 seg 2 into seg 2
nl04 density request from 9e19 to 8e19/m^2 loaded plasma into rampdown |
| Aug 6 2009 01:56:12:467PM | 1090806020 | Jim Irby | nl04 request from 8e19 to 9.5e19/m^2
loaded plasma into rampdown |
| Aug 6 2009 02:17:32:203PM | 1090806021 | Jim Irby | dpcs_fizzle ref shot back to 1090731017
plasma into rampdown RGA sees large increase in m28 and m14 dpcs_fizzle programming behaved properly -- resistance going down h/(h+d) at 10% |
| Aug 6 2009 02:33:53:247PM | 1090806022 | Jim Irby | no dpcs changes
plasma into rampdown neuts/hards staying low |
| Aug 6 2009 02:53:51:497PM | 1090806023 | Jim Irby | no dpcs changes
plasma into rampdown |
| Aug 6 2009 03:12:19:807PM | 1090806024 | Jim Irby | no dpcs changes
disruption at 1.59 s |
| Aug 6 2009 03:12:57:340PM | 1090806025 | Jim Irby | no dpcs changes
plasma into rampdown |
| Aug 6 2009 03:33:37:073PM | 1090806026 | Jim Irby | no dpcs changes
plasma into rampdown |
| Aug 6 2009 03:50:29:680PM | 1090806027 | Jim Irby | no dpcs changes
plasma into rampdown |
| Aug 6 2009 04:07:18:163PM | 1090806028 | Jim Irby | no dpcs changes
plasma into rampdown |
| Aug 6 2009 04:26:44:397PM | 1090806029 | Jim Irby | no dpcs changes
plasma into rampdown |
| Aug 6 2009 04:42:50:500PM | 1090806030 | Jim Irby | no dpcs changes
plasma into rampdown |
| Aug 6 2009 05:02:50:813PM | 1090806031 | Jim Irby | no dpcs changes
No N2 --- baseline discharge plasma into rampdown |
| Aug 6 2009 05:41:43:187PM | 1090806032 | Jim Irby | nl04 density request 9.5e19/m^2 to 12e19/m^2 (should give 10e19/m^2 with nl04 gain a 2)
plasma into rampdown --- nl04 ok |
| Engineering Operator Comments | ||||
| Shot | Time | Type | Status | Comment |
| 1 | 09:20:36:030AM | Plasma | Ok | |
| 2 | 09:44:15:190AM | Plasma | Ok | |
| 3 | 10:06:52:970AM | Plasma | Ok | OH1&2's set to -35ka limit |
| 4 | 10:20:02:123AM | Plasma | Ok | |
| 5 | 10:32:44:193AM | Plasma | Ok | |
| 6 | 10:45:53:813AM | Plasma | Ok | |
| 7 | 10:58:51:813AM | Plasma | Ok | |
| 8 | 11:11:37:133AM | Plasma | Ok | |
| 9 | 11:24:24:460AM | Plasma | Ok | |
| 10 | 11:37:12:517AM | Plasma | Ok | |
| 11 | 11:50:27:607AM | Plasma | Ok | |
| 12 | 12:05:34:850PM | Plasma | Ok | |
| 13 | 12:18:37:110PM | Plasma | Bad | OH2 Commutation Failure |
| 14 | 12:36:04:593PM | Plasma | Ok | |
| 15 | 12:49:11:273PM | Plasma | Ok | |
| 16 | 01:01:56:660PM | Plasma | Ok | |
| 17 | 01:15:10:293PM | Plasma | Ok | |
| 18 | 01:28:04:617PM | Plasma | Ok | |
| 19 | 01:41:29:957PM | Plasma | Ok | |
| 20 | 01:54:06:607PM | Plasma | Ok | |
| 21 | 02:07:04:570PM | Plasma | Ok | |
| 22 | 02:24:35:787PM | Plasma | Ok | |
| 23 | 02:40:54:893PM | Plasma | Ok | |
| 24 | 02:55:21:293PM | Plasma | Ok | |
| 25 | 03:09:54:023PM | Plasma | Ok | |
| 26 | 03:23:29:987PM | Plasma | Ok | |
| 27 | 03:44:21:113PM | Plasma | Ok | |
| 28 | 04:03:53:470PM | Plasma | Ok | |
| 29 | 04:21:13:907PM | Plasma | Ok | |
| 30 | 04:39:48:390PM | Plasma | Ok | |
| 31 | 04:53:05:417PM | Plasma | Ok | |
| 32 | 05:08:27:553PM | Plasma | Ok | |
| System Availability | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Aug 6 2009 09:20:13:577AM | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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