| Miniproposals | ||||||||||
|
| Operators | |
| Session leader(s): | Brian Labombard |
| Physics operator(s): | Robert Granetz |
| Engineering operator(s): | Bill Parkin,Bill Byford,Gary Dekow |
| Engineering Operator Run Comment |
| MP#591 - Boundary layer heat transport, in H-modes |
| Session Leader Plans |
| Entered: Aug 18 2010 11:43:20:137AM |
| Author: Brian Labombard |
| MP#591 - Boundary layer heat transport experiments in H-mode plasmas
Primary targets for today are: (1) Revisit heat flux footprint measurements in LSN EDA H-mode discharges with improved ramped tile diagnostics and with the strike point on vertical target face (not having to avoid the tungsten tile row). We will use two types of discharges to study EDAs: (a) fixed strike point and (b) strike point sweeping up the divetor plate beyond the nose. We will vary Psol (via ICRF) and explore different plasma currents. (2) Explore the effect of field line length on heat flux footprint widths. We will perform SSEP sweeps at 0.5 MA and 1.0 MA at constant ICRF power Setup: Overnight boronization with ECDC cleanup, using parameters identical to 03/10/10. All shots today will be 5.4 tesla. NINJA will be used. Set up will be done at run-time by GPI scientists. ICRF up to 4.5 MW Cryopump will be used to assist boronization recovery and disruption recovery. Shot Plan: Reload shot#1100212024. This was a 0.9 MA, 5.4 tesla shot with outer boundary shape parameters closely matched to DIII-D 'similarity' discharges. Reprogram plasma current to 0.8 MA. Set RXL and ZXL programming to be the same as shot#1100811013. This produced the desired strike-point sweep up the outer divertor plate. Set L-mode target density to NL04 ~ 0.9e20 at RF turn-on Set ICRF from 0.6 to 1.5 seconds. Condition RF as needed to 3.0 MW flattop. A. Boronization cleanup, 0.8 MA EDA with L-mode target NL04~0.9e20 1. Establish steady EDA, PICRF~ 3.0 MW Multiple shots to condition RF to 3.0 MW and sweep strike point over divertor to remove boron layer. Optimize plasma shape, IR camera, vary density as needed ~8 shots 2. Repeat with strike point fixed on tile#3. ~2 shots 3. Program ramp in ICRF power, 0.5 MW @ 0.6 s to 4MW at 1.5 seconds ~2 shots B. 1.0 MA EDA with L-mode target NL04~1.1e20 1. Establish steady EDA, PICRF~ 3.0 MW with strike point sweep ~2 shots 2. Repeat with strike point fixed on tile#3. ~2 shots 3. Program ramp in ICRF power, 1.0 MW @ 0.6 s to 4MW at 1.5 seconds ~2 shots 4. Program fixed ICRF power (highest value without trips) Load SSEP program from shot#1100224023. This produced a change from LSN to slightly USN over the time scale from 1 to 1.1 seconds. Program a similar switch back to LSN, starting at 1.2 seconds. ~2 shots C. 0.5 MA EDA with L-mode target NL04~0.6e20 1. Establish steady EDA, PICRF~ 3.0 MW (or highest without trips) with strike point sweep ~2 shots 2. Repeat with strike point fixed on tile#3. ~2 shots 3. Program ramp in ICRF power, 0.5 MW @ 0.6 s to 4MW at 1.5 seconds ~2 shots 4. Program fixed ICRF power (highest value without trips) Load SSEP program from step B.4 above ~2 shots |
| Physics Operators Plans |
| Entered: Aug 18 2010 03:43:53:740PM |
| Author: Robert Granetz |
Engineering setup for Thursday 2010/08/19
MP591 - Boundary layer heat transport experiments in H-mode plasmas
Session leader: B. LaBombard
Physics operator: R. Granetz
Asst PO: S. Scott
Overnight boronization. Standard ECDC after boronization (2 hours in
helium, followed by 1 hour in D2)
Run will start at 09:00 and end at 17:00.
Power systems as on 1100212024 (Ip=0.9 MA, 5.4 T, 1.2e20 m-2 (target), LSN)
A-coil configuration: +Dtop -Dbot -Jtop +Jbot; Hybrid enabled (standard
configuration)
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)
fill NINJA with 10 psi D2
Enable the following gate valves and shutters, assuming no vacuum problems:
ECE, VUV, Z-bolo, HIREX-Sr, B-spectrometer GV
Torvac setup: keep gate valves open during pulse
Specific diagnostics: divertor IR camera
------------------------------------------------------------------------------
Boronization: overnight; no between-shot
Impurity injector: no
ICRF: yes, 3.0 MW to begin with, eventually going up to 4.5 MW on some
shots; Set ICRF to go from t=0.6 s to 1.5 s
LH: no
DNB: yes
Cryopump: yes
------------------------------------------------------------------------------
Run plan: Run LSN EDA H-mode discharges with the improved edge heat flow
diagnostics. For part of the run we will be sweeping the
outboard strike point. If time permits, we will also perform
some SSEP sweeps.
Load seg 1 from seg 1 of 1100818001
Load seg 2 from seg 2 of 1100212024
Changes:
Reduce Ip to 0.8 MA;
Set target nl_04 to 0.9e20 m-2
Set RXL and ZXL programming to be the same as shot 1100811013.
This produced the desired strike-point sweep up the outer
divertor plate.
Start the day with several shots for boronization cleanup and ICRF
conditioning. Then establish a steady EDA H-mode. See the
session leader's run plan for further details.
|
| Session Leader Summaries |
| Entered: Aug 19 2010 10:31:40:220PM |
| Author: Brian Labombard |
| Run Summary for 1100819
MP#591 "Boundary layer heat transport experiments in H-mode plasmas" The run proceeded mostly as planned. We started with 0.8 MA boronization recovery discharges (EDA attempts), sweeping the strike point up the outer divertor plate to clean off the boron layer and to get measurements of heat flux profiles on the embedded sensors. Shots#2 through 14 were spent accomplishing this (with exception of a no-TF shot#8). Large parallel heat fluxes, some exceeding 1 GW/m^2, where reported by the Langmuir probes in EDA as the strike point passed over them. But these seemed to be associated with the 'death ray' phenomenon seen before in ohmic discharges and were not taken seriously as a measure of the parallel heat flux in the 'unperturbed' plasma (i.e., not perturbed by the probe bias). Shots#12, 13, 14 are good examples with constant RF power in EDA. The surface TCs and IR indicated lower q// values. However, as we moved to a fixed or slowly sweeping strike point program (shots #14, 15) the 'death ray' really did become a death ray for the Langmuir probes. JDIV probe#3 died at the end of shot#15 (became shorted) because of the strike point remaining on it for too long. In retrospect, we should have maintained the strike point sweep in order to preserve the LP sensors. But we already had decided to optimize the IR camera signals, which meant holding the strike point fixed so that the local tile surface would heat to high temperatures. Shot# 16 had ~constant Prf (2.5 to 3 MW) and was fixed strike point EDA discharge. Unfortunately the radiation levels were a bit high, ~ 1.7 MW Prad_main foil. Shot#17 and 18 had a ramp-up in RF power, with 18 being the best one ('trophy'). But this action yielded just a modest variation in Psol because the radiative power ramped up also. Next we turned our attention to 1.0 MA EDA discharges. These were shots#19-24 (with 23 being a fizzle). On shot#19 (L-mode with ICRF power ramp), the slow-sweep strike point programming hit JDIV probe#4 real hard, causing it to report 1.5 GW/m^2 parallel heat flux and tripping its thermal breaker on the probe electronics. On shot#22 it got hit again, this time causing the probe to melt and short out. This caused us to tweak the sweep programming to a larger amplitude later on in the run. Too little, too late. We never got a 'trophy' shot at 1.0 MA, with a series of ELM-free like H-modes with high impurity content. Surface TC#7 had some very impressive clean signals on shots #19 (L-mode) and 22 (L-mode) which mapped out the footprint nicely. We should work this sensor into our future run plans by programming the same sweeps. Finally, we dialed up some 0.5 MA EDAs (25-28). These discharges went well with shot#27 being the 'trophy' Prf ramp up shot with good IR camera data. We did not make any progress on single-null versus double-null footprint comparisons at 0.5 and 1.0 MA and will need to attack these on the next (and final?) outing for MP#591 in FY2010. Shot Log 1 -fizzle 2 -LSN, 5.4T, 0.8 MA, NL04~0.95, no probes scanning divertor probes are boron-coated strike point sweep, as desired left gap: 1.3 cm, right gap: 1.2, kappa: 1.6 many RF trips 3 -LSN, 5.4T, 0.8 MA, NL04~1, no probes scanning strike point sweep RF conditioning 4 -LSN, 5.4T, 0.8 MA, NL04~0.9 at RF turn on EDAs with ratty RF power from J, D looking better strike point sweep 5 -LSN, 5.4T, 0.8 MA, NL04~0.9 at RF turn on RF conditioning strike point sweep 6 -LSN, 5.4T, 0.8 MA, NL04~0.9 at RF turn on Steady EDA, NL04 ~ 1.7, with various levels of RF power from many trips edge thomson data improved (HV had dropped on previous shots) strike point sweep 7 -LSN, 5.4T, 0.8 MA, NL04~0.9 at RF turn on again steady EDA, NL04 ~ 1.7, with various RF trips Prad_main foil ~ 0.9 MW strike point sweep 8 - no TF 9 -LSN, 5.4T, 0.8 MA, NL04~0.9 at RF turn on, ASP(-5), WASP(rho=0) @ 0.8, 1.0, 1.2s again steady EDA, NL04 ~ 1.7, with various RF trips, PRF ~ 1.7 MW late ASP in far SOL WASP cleaning up boron layer JDIV, FDIV probes are clean on vertical face. 2 ohm range on JDIV.G06.p0 is out of spec again. Running on 0.5 ohms (no auto gain) strike point sweep IR camera saturated 10 -LSN, 5.4T, 0.8 MA, NL04~0.9 at RF turn on, ASP(-3), WASP(rho=0) @ 0.8, 1.0, 1.2s EDA with increasing radiation that kills it at 1.3s. Prf almost steady at 2MW. strike point sweep West electrodes on WASP still coated. ASP in far SOL IR camera timing issues Next: Argon puff off, go for steady 2MW RF 11 -LSN, 5.4T, 0.8 MA, NL04~0.9 at RF turn on, ASP(-1), WASP(17, 17, 17V) @ 0.8, 1.0, 1.2 s EDA, turning to mostly radiation at 1.15 s Prf 2 dropping to 1.5MW at 1 s. ASP in far SOL 12 -LSN, 5.4T, 0.8 MA, NL04~0.9 at RF turn on, ASP(-1), WASP(17, 17, 17V) @ 0.8, 1.0, 1.2 s EDA,NL04~1.5, with bump up in radiation at 1.1 s Prf steady at 2 MW - best shot yet ASP in far SOL, WASP in far SOL (west electrodes coated?) 13 -LSN, 5.4T, 0.8 MA, NL04~0.9 at RF turn on, ASP(-1), WASP(18, 18, 18V) @ 0.8, 1.0, 1.2 s steady EDA with density ramp up ASP, WASP in far SOL (west electrodes on WASP clean up on this shot) Prf ~ 2.5 MW with some trips Prad_main foil ~ 1.6 MW 14 -LSN, 5.4T, 0.8 MA, NL04~0.9 at RF turn on, ASP(-1), WASP(18, 18, 18V) @ 0.8, 1.0, 1.2 s EDA to 0.98 s then a couple of EFH-like modes after that WASP over-inserted at 1 s fixed strike point to 1 s then ramps up nose Prad_main foil ~ 1.6 MW 15 -LSN, 5.4T, 0.8 MA, NL04~0.9 at RF turn on, ASP(-1), WASP(17, 17, 17V) @ 0.8, 1.0, 1.2 s Steady EDA, Prf ~ 2.5 MW ASP, WASP in far SOL, clean very slight ramp up tile#3 JDIV.G3.p0 shorts out at the end of this shot 16 -LSN, 5.4T, 0.8 MA, NL04~0.9 at RF turn on, ASP(-1), WASP(17, 17, 17V) @ 0.8, 1.0, 1.2 s Steady EDA, Prf ~ 2.7 MW with trips ASP, WASP in far SOL, clean slight ramp up tile#3 17 -LSN, 5.4T, 0.8 MA, NL04~0.9 at RF turn on, ASP(-1), WASP(17, 17, 17V) @ 0.8, 1.0, 1.2 s Steady EDA, Prf power ramp 0.5 to 3 MW ASP, WASP in far SOL, clean RANGES problem on DT216 at A-port - will need to correct (Note: this was done after the run) slight strike point ramp up tile#3 18 -LSN, 5.4T, 0.8 MA, NL04~0.9 at RF turn on, ASP(-1), WASP(17, 17, 17V) @ 0.8, 1.0, 1.2 s Steady EDA, very nice Prf power ramp 0.5 to 3 MW - trophy shot No A-port CPCI data - DTs stayed in ARM, did not trigger slight strike point ramp up tile#3 Next: goto 1.0 MA, NL04 ~ 1.1 19 -LSN, 5.4T, 1.0 MA, NL04~1.0 at RF turn on, no probes scanning Late H-mode, Prf power ramp 0.5 to 2.3 MW. E faulted out. slight strike point ramp up tile#4 SurfaceTC#7 maps out heat flux footprint 20 -LSN, 5.4T, 1.0 MA, NL04~1.0 at RF turn on, ASP(-3), WASP(16, 16, 16V) @ 0.8, 1.0, 1.2 s Late H-mode at 0.9s Prf power ramp 1 to 4 MW, J faulting. slight strike point ramp up tile#4 21 -LSN, 5.4T, 1.0 MA, NL04~1.0 at RF turn on, ASP(-3), WASP(16, 16, 16V) @ 0.8, 1.0, 1.2 s 3 H-modes, each accumulating impurities. SurfaceTC#7 maps out heat flux footprint slight strike point ramp up tile#4 22 -LSN, 5.4T, 1.0 MA, NL04~1.0 at RF turn on, ASP(-3), WASP(16, 16, 16V) @ 0.8, 1.0, 1.2 s late H-mode. D faulted. Prf ramp from 1.3 to 2.6 MW SurfaceTC#7 maps out heat flux footprint 23 -fizzle 24 -LSN, 5.4T, 1.0 MA, NL04~1.1 at RF turn on, ASP(-3), WASP(16, 16, 16V) @ 0.8, 1.0, 1.2 s JDIV probe#3 and probe#4 are both shorted and unplugged. 3 EFHs, Prf very trippy Next: go to 0.5 MA 25 -LSN, 5.4T, 0.5 MA, NL04~0.6 at RF turn on,no probes scanning Steady EDA, Prf ramping from 0.6 to 2 MW with trips. 26 -LSN, 5.4T, 0.5 MA, NL04~0.6 at RF turn on,ASP(-3), WASP(16, 16, 16V) @ 0.8, 1.0, 1.2 s Steady EDA, Prf ramping from 0.6 to 2.6 MW, almost clean with trips from E ASP, WASP data ok fixed strike point IR data may be slightly saturated. 27 -LSN, 5.4T, 0.5 MA, NL04~0.6 at RF turn on,ASP(-3), WASP(16, 16, 16V) @ 0.8, 1.0, 1.2 s Steady EDA, Prf very clean ramp from 0.6 to 2.8 MW - trophy shot ASP, WASP data ok fixed strike point IR data excellent 28 -LSN, 5.4T, 0.5 MA, NL04~0.8 at RF turn on,ASP(-3), WASP(16, 16, 16V) @ 0.8, 1.0, 1.2 s D and E off, L-mode, Prf ramp (trippy) from 0.6 to 2 MW ASP, WASP data ok detached divertor |
| Physics Operator Summaries |
| Entered: Aug 19 2010 05:05:10:787PM |
| Author: Robert Granetz |
Run summary for Thursday 2010/08/19
MP591 - Boundary layer heat transport experiments in H-mode plasmas
Session leader: B. LaBombard
Physics operator: R. Granetz
The tokamak ran very well today, with all plasmas going full length. We
boronized last night, and the first 10 plasmas were devoted to ICRF
post-boronization recovery. After that we had plenty of EDA H-modes with
ICRF power ramps on many shots, outboard strikepoint sweeps on many shots,
several plasma currents (0.8, 1.0, and 0.5 MA), and several different
densities.
Early in the run their was a problem with the DPCS computer which was
resolved by rebooting it.
Scorecard: 25 plasmas (no early shutdowns)
1 dud (no TF)
2 fizzles
0 power supply tests
1 no-power MDS shot cycle
--------------
Total: 29 shot cycles (but only 28 were "registered"; shot 3 occurred
twice, with the first one being a no-power cycle)
|
| Session Leader Comments | |||
| Aug 19 2010 09:30:24:707AM | 1100819002 | Brian Labombard | 2 -LSN, 5.4T, 0.8 MA, NL04~0.95, no probes scanning divertor probes are boron-coated strike point sweep, as desired left gap: 1.3 cm, right gap: 1.2, kappa: 1.6 many RF trips |
| Aug 19 2010 10:03:30:530AM | 1100819003 | Brian Labombard | 3 -LSN, 5.4T, 0.8 MA, NL04~1, no probes scanning strike point sweep RF conditioning |
| Aug 19 2010 10:28:23:297AM | 1100819004 | Brian Labombard | 4 -LSN, 5.4T, 0.8 MA, NL04~0.9 at RF turn on EDAs with ratty RF power from J, D looking better strike point sweep |
| Aug 19 2010 11:08:19:330AM | 1100819005 | Brian Labombard | 5 -LSN, 5.4T, 0.8 MA, NL04~0.9 at RF turn on RF conditioning strike point sweep |
| Aug 19 2010 11:08:28:450AM | 1100819006 | Brian Labombard | 6 -LSN, 5.4T, 0.8 MA, NL04~0.9 at RF turn on Steady EDA, NL04 ~ 1.7, with various levels of RF power from many trips edge thomson data improved (HV had dropped on previous shots) strike point sweep |
| Aug 19 2010 11:08:45:783AM | 1100819007 | Brian Labombard | 7 -LSN, 5.4T, 0.8 MA, NL04~0.9 at RF turn on again steady EDA, NL04 ~ 1.7, with various RF trips strike point sweep |
| Aug 19 2010 12:08:19:593PM | 1100819009 | Brian Labombard | 9 -LSN, 5.4T, 0.8 MA, NL04~0.9 at RF turn on, ASP(-5), WASP(rho=0) @ 0.8, 1.0, 1.2 s again steady EDA, NL04 ~ 1.7, with various RF trips, PRF ~ 1.7 MW late ASP in far SOL WASP cleaning up boron layer JDIV, FDIV probes are clean on vertical face. 2 ohm range on JDIV.G06.p0 is out of spec again. Running on 0.5 ohms (no auto gain) strike point sweep IR camera saturated |
| Aug 19 2010 12:08:02:947PM | 1100819010 | Brian Labombard | 10 -LSN, 5.4T, 0.8 MA, NL04~0.9 at RF turn on, ASP(-3), WASP(rho=0) @ 0.8, 1.0, 1.2 s EDA with increasing radiation that kills it at 1.3s. Prf almost steady at 2MW. strike point sweep West electrodes on WASP still coated. ASP in far SOL IR camera timing issues Next: Argon puff off, go for steady 2MW RF |
| Aug 19 2010 12:42:07:560PM | 1100819011 | Brian Labombard | 11 -LSN, 5.4T, 0.8 MA, NL04~0.9 at RF turn on, ASP(-1), WASP(17, 17, 17V) @ 0.8, 1.0, 1.2 s EDA, turning to mostly radiation at 1.15 s Prf 2 dropping to 1.5MW at 1 s. ASP in far SOL |
| Aug 19 2010 12:42:26:630PM | 1100819012 | Brian Labombard | 12 -LSN, 5.4T, 0.8 MA, NL04~0.9 at RF turn on, ASP(-1), WASP(17, 17, 17V) @ 0.8, 1.0, 1.2 s EDA,NL04~1.5, with bump up in radiation at 1.1 s Prf steady at 2 MW - best shot yet ASP in far SOL, WASP in far SOL (west electrodes coated?) |
| Aug 19 2010 01:20:30:137PM | 1100819013 | Brian Labombard | 13 -LSN, 5.4T, 0.8 MA, NL04~0.9 at RF turn on, ASP(-1), WASP(18, 18, 18V) @ 0.8, 1.0, 1.2 s steady EDA with density ramp u p ASP, WASP in far SOL (west electrodes on WASP clean up on this shot) Prf ~ 2.5 MW w ith some trips Prad_main foil ~ 1.6 MW |
| Aug 19 2010 01:20:46:880PM | 1100819014 | Brian Labombard | 14 -LSN, 5.4T, 0.8 MA, NL04~0.9 at RF turn on, ASP(-1), WASP(18, 18, 18V) @ 0.8, 1.0, 1.2 s EDA to 0.98 s then a couple of EFH-like modes after that WASP over-inserted at 1 s fixed strike point to 1 s then ramps up nose Prad_main foil ~ 1.6 MW |
| Aug 19 2010 02:21:16:753PM | 1100819015 | Brian Labombard | 15 -LSN, 5.4T, 0.8 MA, NL04~0.9 at RF turn on, ASP(-1), WASP(17, 17, 17V) @ 0.8, 1.0, 1.2 s Steady EDA, Prf ~ 2.5 MW ASP, WASP in far SOL, clean very slight ramp up tile#3 JDIV.G3.p0 shorts out at the end of this shot |
| Aug 19 2010 02:21:38:203PM | 1100819016 | Brian Labombard | 16 -LSN, 5.4T, 0.8 MA, NL04~0.9 at RF turn on, ASP(-1), WASP(17, 17, 17V) @ 0.8, 1.0, 1.2 s Steady EDA, Prf ~ 2.7 MW with trips ASP, WASP in far SOL, clean slight ramp up tile#3 |
| Aug 19 2010 02:21:52:057PM | 1100819017 | Brian Labombard | 17 -LSN, 5.4T, 0.8 MA, NL04~0.9 at RF turn on, ASP(-1), WASP(17, 17, 17V) @ 0.8, 1.0, 1.2 s Steady EDA, Prf power ramp 0.5 to 3 MW ASP, WASP in far SOL, clean RANGES problem on DT216 at A-port - will need to correct slight strike point ramp up tile#3 |
| Aug 19 2010 02:22:06:027PM | 1100819018 | Brian Labombard | 18 -LSN, 5.4T, 0.8 MA, NL04~0.9 at RF turn on, ASP(-1), WASP(17, 17, 17V) @ 0.8, 1.0, 1.2 s Steady EDA, very nice Prf power ramp 0.5 to 3 MW - trophy shot No A-port CPCI data - DTs stayed in ARM, did not trigger slight strike point ramp up tile#3 Next: goto 1.0 MA, NL04 ~ 1.1 |
| Aug 19 2010 02:47:00:823PM | 1100819019 | Brian Labombard | 19 -LSN, 5.4T, 1.0 MA, NL04~1.0 at RF turn on, no probes scanning Late H-mode, Prf power ramp 0.5 to 2.3 MW. E faulted out. slight strike point ramp up tile#4 |
| Aug 19 2010 04:34:58:793PM | 1100819020 | Brian Labombard | 20 -LSN, 5.4T, 1.0 MA, NL04~1.0 at RF turn on, ASP(-3), WASP(16, 16, 16V) @ 0.8, 1.0, 1.2 s Late H-mode at 0.9s Prf power ramp 1 to 4 MW, J faulting. SurfaceTC#7 maps out heat flux footprint slight strike point ramp up tile#4 |
| Aug 19 2010 04:35:08:063PM | 1100819021 | Brian Labombard | 21 -LSN, 5.4T, 1.0 MA, NL04~1.0 at RF turn on, ASP(-3), WASP(16, 16, 16V) @ 0.8, 1.0, 1.2 s 3 H-modes, each accumulating impurities. SurfaceTC#7 maps out heat flux footprint slight strike point ramp up tile#4 |
| Aug 19 2010 04:35:24:343PM | 1100819022 | Brian Labombard | 22 -LSN, 5.4T, 1.0 MA, NL04~1.0 at RF turn on, ASP(-3), WASP(16, 16, 16V) @ 0.8, 1.0, 1.2 s late H-mode. D faulted. Prf ramp from 1.3 to 2.6 MW |
| Aug 19 2010 04:35:37:767PM | 1100819024 | Brian Labombard | 24 -LSN, 5.4T, 1.0 MA, NL04~1.1 at RF turn on, ASP(-3), WASP(16, 16, 16V) @ 0.8, 1.0, 1.2 s JDIV probe#3 and probe#4 are both shorted and unplugged. 3 ELHs, Prf very trippy |
| Aug 19 2010 04:36:10:687PM | 1100819025 | Brian Labombard | 25 -LSN, 5.4T, 0.5 MA, NL04~0.6 at RF turn on,no probes scanning Steady EDA, Prf ramping from 0.6 to 2 MW with trips |
| Aug 19 2010 04:36:20:703PM | 1100819026 | Brian Labombard | 26 -LSN, 5.4T, 0.5 MA, NL04~0.6 at RF turn on,ASP(-3), WASP(16, 16, 16V) @ 0.8, 1.0, 1.2 s Steady EDA, Prf ramping from 0.6 to 2.6 MW with trips from E ASP, WASP data ok fixed strike point IR data may be slightly saturated. |
| Aug 19 2010 05:20:43:237PM | 1100819027 | Brian Labombard | 27 -LSN, 5.4T, 0.5 MA, NL04~0.6 at RF turn on,ASP(-3), WASP(16, 16, 16V) @ 0.8, 1.0, 1.2 s Steady EDA, Prf very clean ramp from 0.6 to 2.8 MW - trophy shot ASP, WASP data ok fixed strike point IR data excellent |
| Aug 19 2010 05:20:56:123PM | 1100819028 | Brian Labombard | 28 -LSN, 5.4T, 0.5 MA, NL04~0.8 at RF turn on,ASP(-3), WASP(16, 16, 16V) @ 0.8, 1.0, 1.2 s D and E off, L-mode, Prf ramp (trippy) from 0.6 to 2 MW ASP, WASP data ok detached divertor |
| Physics Operator Comments | |||
| Aug 19 2010 09:10:09:610AM | 1100819001 | Robert Granetz | Shot 01 -- Fizzle. Fields look okay, pre-fill pressure is a bit high Next shot: reduce pre-fill pulse to 55 ms |
| Aug 19 2010 09:23:29:757AM | 1100819002 | Robert Granetz |
Shot 02 -- Plasma, full length. 0.8 MA, 5.4 T, 0.9e20 m-2, LSN, cryopump, x-pt sweep. Lots of faulting
on all RF antennas.
Next shot: repeat for RF boronization recovery
|
| Aug 19 2010 09:45:50:173AM | 1100819003 | Robert Granetz | Shot 03 -- No-power shot due to hang in INIT. Problem with DPCS. Steve Wolfe is rebooting DPCS. Next shot: no-power test shot |
| Aug 19 2010 10:08:48:713AM | 1100819003 | Robert Granetz |
Shot 03 -- Plasma, full length. 0.8 MA, 5.4 T, 0.9-1.0e20 m-2, LSN, cryopump, x-pt sweep. ICRF not
doing well.
Next shot: no DPCS changes
|
| Aug 19 2010 10:20:43:887AM | 1100819004 | Robert Granetz |
Shot 04 -- Plasma, full length. 0.8 MA, 5.4 T, 0.9e20 m-2 (target), LSN, cryopump, x-pt sweep.
D-port ran well, so we got an EDA H-mode, but E and J are still not doing well.
Next shot: repeat, no DPCS changes
|
| Aug 19 2010 10:37:01:170AM | 1100819005 | Robert Granetz |
Shot 05 -- Plasma, full length. 0.8 MA, 5.4 T, 0.9e20 m-2 (target), LSN, cryopump, x-pt sweep.
Two EDA H-modes. Still conditioning ICRF.
Next shot: repeat, no DPCS changes
|
| Aug 19 2010 10:51:30:247AM | 1100819006 | Robert Granetz |
Shot 06 -- Plasma, full length. 0.8 MA, 5.4 T, 0.9e20 m-2 (target), LSN, cryopump, x-pt sweep.
One longish EDA H-mode. Finally got some steadier power from J-port. E-port is still
not doing well.
Next shot: repeat, no DPCS changes
|
| Aug 19 2010 11:06:31:853AM | 1100819007 | Robert Granetz |
Shot 07 -- Plasma, full length. 0.8 MA, 5.4 T, 0.9e20 m-2 (target), LSN, cryopump, x-pt sweep.
One long EDA H-mode. J-port is now ramping pretty well; D & E still need work.
Next shot: repeat, no DPCS changes
|
| Aug 19 2010 11:25:31:483AM | 1100819008 | Robert Granetz | Shot 08 -- Dud, no TF Next shot: plasma |
| Aug 19 2010 11:44:39:587AM | 1100819009 | Robert Granetz |
Shot 09 -- Plasma, full length. 0.8 MA, 5.4 T, 0.9e20 m-2 (target), LSN, cryopump, x-pt sweep.
One long EDA H-mode. J-port ramping pretty well; D & E still need work.
Next shot: repeat, no DPCS changes
|
| Aug 19 2010 12:07:30:873PM | 1100819010 | Robert Granetz |
Shot 10 -- Plasma, full length. 0.8 MA, 5.4 T, 0.9e20 m-2 (target), LSN, cryopump, x-pt sweep.
EDA H-modes. Constant RF power (i.e. no ramps). D & J ran well; E still need works.
Next shot: repeat, no DPCS changes
|
| Aug 19 2010 12:11:57:090PM | 1100819011 | Robert Granetz |
Shot 11 -- Plasma, full length. 0.8 MA, 5.4 T, 0.9e20 m-2 (target), LSN, cryopump, x-pt sweep.
EDA H-mode. Constant RF power (i.e. no ramps). J ran well, D shut down early, E is off.
Next shot: repeat, no DPCS changes
|
| Aug 19 2010 12:38:15:670PM | 1100819012 | Robert Granetz |
Shot 12 -- Plasma, full length. 0.8 MA, 5.4 T, 0.9e20 m-2 (target), LSN, cryopump, x-pt sweep.
One long EDA H-mode. Constant RF power (i.e. no ramps). D, E, and J ran very well.
Next shot: repeat, no DPCS changes
|
| Aug 19 2010 12:56:02:463PM | 1100819013 | Robert Granetz |
Shot 13 -- Plasma, full length. 0.8 MA, 5.4 T, 0.9e20 m-2 (target), LSN, cryopump, x-pt sweep.
One long EDA H-mode. Prf=2.5 MW; D, E, and J ran well.
Next shot: program RXL and ZXL to remain constant at the value they formerly had at t=0.90 s during
the ramp on the previous shots; also add -0.0002 T to BR_0 offset
|
| Aug 19 2010 01:17:12:923PM | 1100819014 | Robert Granetz |
Shot 14 -- Plasma, full length. 0.8 MA, 5.4 T, 0.9e20 m-2 (target), LSN, cryopump.
Several EDA H-modes. Prf=2.5 MW from D,E,J, with some faults. The outboard
strikepoint stayed pretty constant until t=1.15 s.
Next shot: change RXL as per Brian's directions; also extend flattop on ZXL
|
| Aug 19 2010 01:32:07:433PM | 1100819015 | Robert Granetz |
Shot 15 -- Plasma, full length. 0.8 MA, 5.4 T, 0.9e20 m-2 (target), LSN, cryopump.
One long EDA H-mode. Prf=2.5 MW from D,E,J. The outboard
strikepoint stayed pretty constant.
Next shot: more RXL changes as directed by SL
|
| Aug 19 2010 01:40:49:223PM | 1100819016 | Robert Granetz |
Shot 16 -- Plasma, full length. 0.8 MA, 5.4 T, 0.9e20 m-2 (target), LSN, cryopump.
One long EDA H-mode. Prf=2.7 MW from D,E,J.
Next shot: no DPCS changes; ramp the RF power
|
| Aug 19 2010 01:58:35:080PM | 1100819017 | Robert Granetz |
Shot 17 -- Plasma, full length. 0.8 MA, 5.4 T, 0.9e20 m-2 (target), LSN, cryopump.
EDA H-modes. Prf ramped up to 2.7 MW from D,E,J.
Next shot: repeat, no DPCS changes
|
| Aug 19 2010 02:15:34:477PM | 1100819018 | Robert Granetz |
Shot 18 -- Plasma, full length. 0.8 MA, 5.4 T, 0.9e20 m-2 (target), LSN, cryopump.
One long EDA H-mode. Prf ramped up to 2.9 MW from D,E,J. Trophy shot.
Next shot: set Ip to 1.0 MA; set nl_04 to 1.1e20 m-2 (target)
|
| Aug 19 2010 02:43:45:667PM | 1100819019 | Robert Granetz |
Shot 19 -- Plasma, full length. 1.0 MA, 5.4 T, 1.0-1.1e20 m-2 (target), LSN, cryopump.
Didn't get an H-mode until very late in the flattop. Prf ramped up to 2.5 MW from D,E,J.
Next shot: add 3 ms to pre-fill pulse; more RF power
|
| Aug 19 2010 02:56:28:627PM | 1100819020 | Robert Granetz |
Shot 20 -- Plasma, full length. 1.0 MA, 5.4 T, 1.0e20 m-2 (target), LSN, cryopump.
Prf ramped up to 3.1+ MW from D,E,J. Lots of faulting about 3.1 MW.
Next shot: ramp RXL out and then in
|
| Aug 19 2010 03:18:45:363PM | 1100819021 | Robert Granetz |
Shot 21 -- Plasma, nearly full length. 1.0 MA, 5.4 T, 1.0e20 m-2 (target), LSN, cryopump.
Multiple H-modes. Prf ramped up to 3.7+ MW from D,E,J.
Next shot: set nl_04 to 1.1e20 m-2 (It had been 1.0, which was a mistake on my part.)
|
| Aug 19 2010 03:28:15:490PM | 1100819022 | Robert Granetz |
Shot 22 -- Plasma, full length. 1.0 MA, 5.4 T, 1.1e20 m-2 (target), LSN, cryopump.
Didn't get an H-mode until nearly the end of flattop. Prf ramped up to 2.6 MW
from E,J. D-port didn't fire.
Next shot: program a larger ramp up and down on RXL
|
| Aug 19 2010 03:44:01:323PM | 1100819023 | Robert Granetz | Shot 23 -- Fizzle. No obvious problem. Next shot: repeat, no changes; Let's see if it comes back by itself. |
| Aug 19 2010 03:59:43:963PM | 1100819024 | Robert Granetz |
Shot 24 -- Plasma, full length. 1.0 MA, 5.4 T, 1.1e20 m-2 (target), LSN, cryopump.
Several ELM-free H-modes. E-port ramped nicely, but D & J had many faults.
Next shot: set Ip to 0.5 MA and nl_04 to 0.6e20 m-2
|
| Aug 19 2010 04:21:40:573PM | 1100819025 | Robert Granetz |
Shot 25 -- Plasma, full length. 0.5 MA, 5.4 T, 0.6e20 m-2 (target), LSN, cryopump.
No H-modes? Prf ramped up to 2+ MW from D,E,J.
Next shot: remove the RXL sweep
|
| Aug 19 2010 04:33:19:800PM | 1100819026 | Robert Granetz |
Shot 26 -- Plasma, full length. 0.5 MA, 5.4 T, 0.6e20 m-2 (target), LSN, cryopump.
No H-mode? or maybe a very weak pedestal. Prf ramped up to 2.5 MW from D,E,J.
Next shot: repeat, no changes
|
| Aug 19 2010 04:48:58:510PM | 1100819027 | Robert Granetz |
Shot 27 -- Plasma, full length. 0.5 MA, 5.4 T, 0.6e20 m-2 (target), LSN, cryopump.
EDA H-mode. Prf ramped up to 3 MW from D,E,J, no faults.
Next shot: set nl_04 (target) to 0.8e20 m-2
|
| Aug 19 2010 05:01:59:213PM | 1100819028 | Robert Granetz |
Shot 28 -- Plasma, full length. 0.5 MA, 5.4 T, 0.8e20 m-2 (target), LSN, cryopump.
No H-modes. Prf ramped up to 1.4+ MW from J only. D,E didn't fire.
End of run
|
| Engineering Operator Comments | ||||
| Shot | Time | Type | Status | Comment |
| 1 | 09:01:54:477AM | Plasma | Ok | |
| 2 | 09:15:04:410AM | Plasma | Ok | |
| 3 | 09:54:26:987AM | Plasma | Ok | |
| 4 | 10:13:58:497AM | Plasma | Ok | |
| 5 | 10:27:22:380AM | Plasma | Ok | |
| 6 | 10:44:17:810AM | Plasma | Ok | |
| 7 | 11:00:53:650AM | Plasma | Ok | |
| 8 | 11:17:40:650AM | Plasma | Bad | No TF |
| 9 | 11:34:50:217AM | Plasma | Ok | |
| 10 | 11:52:02:707AM | Plasma | Ok | |
| 11 | 12:06:56:173PM | Plasma | Ok | |
| 12 | 12:25:42:080PM | Plasma | Ok | |
| 13 | 12:40:29:140PM | Plasma | Ok | |
| 14 | 12:57:14:897PM | Plasma | Ok | |
| 15 | 01:17:05:990PM | Plasma | Ok | |
| 16 | 01:33:48:107PM | Plasma | Ok | |
| 17 | 01:49:32:020PM | Plasma | Ok | |
| 18 | 02:07:05:183PM | Plasma | Ok | |
| 19 | 02:25:13:877PM | Plasma | Ok | |
| 20 | 02:43:57:163PM | Plasma | Ok | |
| 21 | 03:00:40:523PM | Plasma | Ok | |
| 22 | 03:20:03:513PM | Plasma | Ok | |
| 23 | 03:37:22:450PM | Plasma | Ok | |
| 24 | 03:53:05:270PM | Plasma | Ok | |
| 25 | 04:07:47:580PM | Plasma | Ok | |
| 26 | 04:24:21:200PM | Plasma | Ok | |
| 27 | 04:40:02:233PM | Plasma | Ok | |
| 28 | 04:56:44:480PM | Plasma | Ok | |
| System Availability | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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