Miniproposals

Miniproposal: Date Filed: Title: First Author: Session Leader: Martin Greenwald (shots 1-17) Session Leader: Gary McCracken (shots 18-33)

Engineering Operator Run Comment

Continuation of yesterday's dimensionless scaling run. Maybe also metha

Session Leader Plans

Physics Operators Plans

Session Leader Summaries

Entered: Jul 7 2004 03:49:12:350PM

Author: To Be Determined

Summary for Run 950303 - Dimensionless Scaling Comparisons Continuation of 950302 M. Greenwald Run Plan -------- The basic outline of the run are power scans at two fixed densities - nebar = 1.5 and 3.0 e20 (nel ~ .9 and 1.8). The other conditions are R= .67, a = .22, kappa = 1.65, Ip = 1.02 with a SNB equilibrium. Inner and outer gaps should be about 1 cm. We start with shot 950301026, with the current nudged down to 1 MA. We tweak the density and equilibrium as needed from there. We start with the lower density. Once the equilibrium and density are established we should start increasing the RF power to its maximum value. Steps of .5 MW are probably appropriate. The RF waveform should be a simple square wave, the pulse length should cover most of the flattop. When we reach the maximum power at ne = 1.5, we will raise the density to 3.0 and repeat the power scan. .................................. Results - better than yesterday, maybe the effects of the D2 ECDC. The following were all good shots, all at 1.0 MA and nebar ~ 2.6e20 950303004 Prf = 1.3 MW 950303005 Prf < .3MW 950303006 Prf < .7MW 950303009 Prf = 1.1 950303010 Prf = 1.5 950303011 Prf = 1.2 950303012 Prf = 1.1 950303015 Prf = .8 950303016 Prf = 0.5 950303017 Prf = 0.0 .................................. Details 950303001 Test 950303002 Dud - PLC setting incorrect 950303003 Good shot but not magnetics data Ip = 1.0 MA, disupted in the middle of rampdown nel reached 1.9e20 950303004 Good Shot nel reach 1.9e20 but no flattop Ip = 1.0 MA Prf = 1.3 MW 950303005 Disrupts early in rampdown Ip = 1.0 MA nel = 1.8 Prf < .3MW 950303006 Increased outer gap to 1.4 Disrupts at start of rampdown Ip = 1.0 MA nel = 1.8 Prf < .7MW 950303007 Disrupts at start of flattop 950303008 Disrupts early again 950303009 Disrupted at begining of rampdown Ip = 1.0 nel = 1.8 Prf = 1.1 950303010 Good Shot Ip = 1.0 MA Prf = 1.5 nel = 1.8 950303011 Good Shot Ip = 1.0 MA Prf = 1.2 nel = 1.8 950303012 Good Shot Ip = 1.0 MA Prf = 1.1 nel = 1.8 950303013 fizzle 950303014 disrupted early 950303015 Good Shot Ip = 1.0 MA nel = 1.8 Prf = .8 950303016 Good Shot - disrupts halfway down rampdown Ip = 1.0 MA nel = 1.8 Prf = 0.5 950303017 Good Shot but disrupts at start of rampdown Ip = 1.0 MA nel = 1.8 Prf = 0.0

Entered: Jul 7 2004 03:49:12:350PM

Author: To Be Determined

RUN_SUMMARY_950303.TXT Engineering operator: J Daigle Physics operator R Granetz Session Leader G. McCracken This run was for mini-proposal #087, Impurity Transport using Non-recycling Impurities. It was a continuation of run 950217 but now using CH4 instead of N2 Purpose (1) Study trace impurity screening for comparison with N2,Ar, Ne; and (2) raise the CH4 levels to try and maximize the impurity radiation in the SOL relative to that in the core plasma. We started at 1.30 pm after the confinement run in the am. We copied the equilibrium from the N2 run, shot 950217034 There were a number of disruptions to begin with and the first good shot injecting CH4 was #024. We started with B-side upper piezo valve with a plenum pressure of 5 psi. Good signals were observed on the McPherson, the CII monitor at C-port and on the CX detector, which saw the increase in the hydrogen due to the methane injection. There was a significant increase in nel04 due to the methane injection in some shots. The carbon acted as a non-recycling impurity (like the N2) as expected. It decayed rapidly at the end of injection and came up to an equilibrium level during constant injection. As far as we could see on preliminary examination the carbon did not make it into the divertor when injected at B-side. There was no clear signature on the oma. This was also true for the N2. Up to shot 29 there was very little sign of detaching. In shot 30 we raised the density to 1.2 e20 and got a clear detachment. It was not as fast as the one we got with N2 on 950217. On shot 32 we injected through NINJA to fuel in the divertor. there was a much slower and smaller rise on CII at Cport, but there was significant hydrogen fuelling as seen on the CX detector. The hydrogen fraction went up to 24 % . There was an indication of detachment at 0.82 s. We need to explore the NINJA fuelling further. We did not get a chance to inject through the inner wall midplane capillary., This should particularly interesting for following the carbon streaming along field lines. Shot summary: shot 18: Early current rampdown. Power supply problem shot 19: No methane injection. Disruption at 0.4 s shot 20: Maximum current 200 kA shot 21: Disruption at 0.4 s shot 22: First good shot nl04=1.0e20 no CH4. shot 23: Disruption at 0.4 s shot 24: Better shot, CH4 injected at 0.6 s for 40 ms, plenum 5 psi. clear increase on CII at C-port, following the injection rate quite closely. No obvious rise of CII on the oma . Clear signal of hydrogen like carbon on the McPherson shot 25: Good shot; CH4 injection at 0.6 s for 40 ms, plenum 5psi similar to 24 shot 26: Good, no CH4, background. shot 27: Good , CH4 injected at 0.6 s for 200 ms. plenum still 5psi. CII signal again good shot 28: Good , CH4 injected at 0.6 s for 200 ms. plenum pressure increased to 9.5 psi shot 29: Good, no CH4, background shot shot 30: Good , CH4 injected at 0.6 s for 200 ms. plenum pressure 9.5 psi Higher density nel04=1.2e20 shot 31: Fizzle shot 32: Good, CH4 injected from NINJA, pressure 411 torr. Trigger at 0.2 s shot 33: Gas calibration using B-side piezo, plenum pressure 9.5 psi, 200ms. Unfortunately the A-side valve was also enabled so the D2 went in also, spoiling the calibration

Physics Operator Summaries

Entered: Jul 7 2004 04:36:53:427PM

Author: To Be Determined

Physics operator's summary for run 950303. SL: M. Greenwald and then G. McCracken PO: R. Granetz EO: V. Bertolino The first half of today's run is a continuation of yesterday's run to gather confinement data for the purposes of dimensionless scaling with DIII-D. Start with the last shot from yesterday, except program the density to ramp up more slowly. Repeat with varying amounts of ICRF power. The second half of today's run is devoted to Gary McCracken's MP #087. This is an impurity transport run, using a non-recycling impurity, namely methane. Start from shot 950217034, and inject varying amounts of methane. If there's time, vary the density with a fixed amount of methane. Due to problems with the CYCLE software (and the absence of our software engineers), there was about an hour's delay in starting up this run. Surprisingly, we managed to get through all of the planned tasks for today. After two tests, shots 003 - 017 were devoted to the dimensionless scaling mini-proposal. Most of these 1 MA plasmas disrupted during the current rampdown, some due to VDE's, some due to OH1 faults, and some...? As the day progressed, the density rampdown became slower and slower. Also, low amounts of hard x-rays occurred on many shots today, even though the pre-fill pressure and the early gas fueling were incrementally increased as well. There were several shots that disrupted during the flattop due to a growing vertical instability, and these were fixed by LOWERING the proportional gain on the slow ZCUR. Maximum ICRF power was 1.5 MW. Read the first session leader's summary for information on the confinement scaling results. Shots 018 to 032 were devoted to studying methane impurity injection, using the B-side-upper valve. It took several shots to get reproducible behavior again, but shots 022, 024 - 030, and 032 were good 0.8 MA plasmas with no disruptions. Background shots (i.e. no methane puffing) were interspersed with injection shots. Low amounts of hard x-rays again were seen on numerous shots, even though the pre-fill and early gas were being steadily increased. The last plasma shot had methane puffed through the NINJA system into the private flux region, but more run time is needed to finish the NINJA section of this mini-proposal. See the second session leader's summary for information on the carbon behavior. Scorecard: 3 tests &/or gas calibration shots 2 fizzles 1 runaway shot 27 plasmas (many 1 MA disruptions) Detailed shot log: Shot 001: Test of shot cycle software only. Shot 002: Dud. OH2 PLC current limits were set way too low (a remnant of earlier power supply tests). The EFC chopper supply also faulted. Shot 003: Plasma, disrupted late in rampdown. Ip=1.0 MA, duration=1.40 s. The density ramped up nicely. The disruption may have been due to excessive density during the rampdown, resulting in a detached plasma. Next shot: Lower the density faster after t=1 second, and ramp the density up a little faster in order to have a short flattop. Shot 004: Plasma, current made it just about all the way down. There was still detachment during the rampdown though. Also, the density rampup didn't give a good flattop. Prf=1.2 MW. Next shot: tweak the density programming a little, including a still faster rampdown. Shot 005: Plasma, disrupted at 1.3 s during rampdown. This was a VDE, kappa was about 1.7. Little or no RF power. Next shot: increase length of density flattop a little more, and increase the outer gap to 1.5 cm from 1.0 cm by decrease RCUR by 2.5 mm Shot 006: Plasma, disrupted at 1.13 s, possibly due to an OH1 fault. This was a thermal quench disruption, and the plasma may have stayed on the midplane, since the only significant halo current was on the midplane partial rogowski. Density had a nice flattop. Outer gap was indeed 1.5 cm. Next shot: no changes. Shot 007: Plasma, disrupted at 0.69 s during the flattop. Probably a VDE. Next shot: reduce elongation (which was 1.73) by lowering ZXU by 1 cm. Shot 008: Plasma, disrupted at 0.65 s during flattop. Again a VDE, with classic growing oscillations on the x-ray zcentroid. So the change to ZXU didn't do much. Next shot: return ZXU to its former value, and now try reducing the proportional gain on the slow ZCUR from 3 to 2 after t=0.5 s. Shot 009: Plasma, disrupted at 1.16 s, again due to an OH1 fault. This shot was very similar to shot 006, in that there was a thermal quench caused by the OH1 failure forcing the plasma into the inboard wall, and the disrupting plasma remained on the midplane. Prf=1.1 MW. Next shot: no changes. Shot 010: Plasma, current made it almost all the way down. Prf=1.4 MW. Next shot: increase duration of density flattop by another 0.1 s. Shot 011: Plasma, another nice shot. Density flattop is good. Prf=1.2 MW. Next shot: no changes. Shot 012: Plasma, disrupted at 1.30 s. Prf=1.1 MW. Density stays up too high...we need those cryo pumps! Next shot: no changes. Shot 013: Fizzle. No obvious reason why, except we've had a long delay between this shot and the last one (due to software problems). Next shot: try again. Shot 014: Plasma, became disruptive at 0.45 s, and terminated at 0.54 s. Looks dirty. Slow current rise. Next shot: try again. Shot 015: Plasma, disrupts at 1.30 s during rampdown. Prf=0.75 MW. Density won't go down much at end of shot. Next shot: no changes Shot 016: Plasma, disrupts at 1.30 s during rampdown. Prf=0.5 MW. Next shot: no RF. If it's a good shot, it will be the last one in this mini-proposal. Shot 017: Plasma, disrupts at 1.2 s, just at the beginning of rampdown. No RF, as requested. This was an upward going disruption, and had a particularly fast dI/dt of 0.93 MA/ms. This concludes the dimensionless scaling mini-proposal. From here on, Gary McCracken will be the session leader, and we will be working on MP #087, impurity transport using a non-recycling impurity, namely methane. Setup segment 2 from shot 950217034, but have a baseline shot before enabling the methane puffing from the B_side_upper valve. Shot 018: Plasma, but very short duration, due to power supply faults. There was no disruption, the loop voltage just pooped out. Next shot: try again. Shot 019: Plasma, disrupted at 0.39 s. Plasma went upwards. There was an OH2 fault, but the engineers claim this was just after the disruption Next shot: try again. Shot 020: Runaways, lots of hard x-rays. Next shot: raise pre-fill from 2.0 to 2.2e-5 torr. Shot 021: Plasma, disrupted at 0.39 s. Very similar to shot 019, in that there was a growing vertical instability (but this one went down). No power supply faults. Next shot: reduce proportional gain on slow ZCUR from 3 to 2. Shot 022: Plasma, beauty of a shot. Current ramped all the way down. nl_04=1.0e20 m-2, as requested. Inner and outer gaps are both 2 cm. Next shot: turn on methane pulse (40 ms, starting at 0.6 s.) Shot 023: Plasma, disrupted at 0.44 s. It was vertically unstable again. Next shot: reduce slow ZCUR proportional gain from 2 to 1.5, and keep fast ZCUR gain up until 0.5 s. Also zero out STRKPSI. Shot 024: Plasma, nice shot. Some hard x-rays. Methane pulse was visible on the C-side camera. Next shot: raise early gas puffing. Keep methane puff the same. Shot 025: Plasma, nice shot. No hard x-rays. Methane pulse was again visible on C-side camera. Next shot: no methane puff. Shot 026: Plasma, nice shot. Next shot: increase methane pulse width from 40 to 200 ms. Shot 027: Plasma, nice shot, some hard x-rays. Methane is clearly visible on the TV. Next shot: increase CH4 plenum pressure from 5 psi to 10 psi, and keep pulse length at 200 ms. Also tweak up early gas puff. Shot 028: Plasma, nice shot, no hard x-rays. The methane puff is very bright on the TV. Next shot: no methane puff. Shot 029: Plasma, nice background shot. Next shot: raise nl_04 from 1.0 to 1.2e20 m-2 and re-enable the strong methane puff (10 psi, 200 ms). Shot 030: Plasma, nice shot. Good divertor detachment at the higher density during the methane puff. Next shot: Same density (nl_04=1.2e20 m-2), turn off methane puff from B-side-upper, and enable methane puff using the NINJA system. For this shot, puff into the private flux zone. Shot 031: Fizzle. Next shot: raise pre-fill to 2.4e-5 torr and try again. Shot 032: Plasma, nice shot. This is the last plasma shot. Shot 033: Gas calibration shot. No power supplies. Fizzle detector effectively disabled. B-side-upper valve enabled, Ninja disabled. End of run. Oops! We forgot to turn off the A-side valve, so the density feedback ended up puffing in a lot of deuterium. This probably renders this calibration shot useless.

Session Leader Comments
Mar 3 1995 09:30:11:370AM	950303001	Martin Greenwald	Test
Mar 3 1995 09:35:14:150AM	950303002	Martin Greenwald	Dud - PLC setting incorrect
Mar 3 1995 09:58:16:750AM	950303003	Martin Greenwald	Good shot but not magnetics data Ip = 1.0 MA, disupted in the middle of rampdown nel reached 1.9e20
Mar 3 1995 10:12:39:700AM	950303004	Martin Greenwald	Good Shot nel reach 1.9e20 but no flattop Ip = 1.0 MA Prf = 1.3 MW
Mar 3 1995 10:31:47:530AM	950303005	Martin Greenwald	Disrupts early in rampdown Ip = 1.0 MA nel = 1.8 Prf < .3MW
Mar 3 1995 10:39:55:430AM	950303006	Martin Greenwald	Increased outer gap to 1.4 Disrupts at start of rampdown Ip = 1.0 MA nel = 1.8 Prf < .7MW
Mar 3 1995 10:56:54:920AM	950303007	Martin Greenwald	Disrupts at start of flattop
Mar 3 1995 11:00:32:710AM	950303008	Martin Greenwald	Disrupts early again
Mar 3 1995 11:14:28:670AM	950303009	Martin Greenwald	Disrupted at begining of rampdown Ip = 1.0 nel = 1.8 Prf = 1.1
Mar 3 1995 11:31:01:650AM	950303010	Martin Greenwald	Good Shot Ip = 1.0 MA Prf = 1.5 nel = 1.8
Mar 3 1995 11:44:39:670AM	950303011	Martin Greenwald	Good Shot Ip = 1.0 MA Prf = 1.2 nel = 1.8
Mar 3 1995 11:57:43:720AM	950303012	Martin Greenwald	Good Shot Ip = 1.0 MA Prf = 1.1 nel = 1.8
Mar 3 1995 12:34:10:260PM	950303013	Martin Greenwald	fizzle
Mar 3 1995 12:39:35:500PM	950303014	Martin Greenwald	disrupted early
Mar 3 1995 12:51:46:690PM	950303015	Martin Greenwald	Good Shot Ip = 1.0 MA nel = 1.8 Prf = 0
Mar 3 1995 12:52:41:000PM	950303015	Martin Greenwald	Good Shot Ip = 1.0 MA nel = 1.8 Prf = 0.0
Mar 3 1995 12:54:03:370PM	950303015	Martin Greenwald	Good Shot Ip = 1.0 MA nel = 1.8 Prf = 0.8
Mar 3 1995 01:30:52:810PM	950303015	Martin Greenwald	Good Shot Ip = 1.0 MA nel = 1.8 Prf = .8
Mar 3 1995 01:08:00:440PM	950303016	Martin Greenwald	Good Shot - disrupts halfway down rampdown Ip = 1.0 MA nel = 1.8 Prf = 0.5
Mar 3 1995 01:31:25:820PM	950303016	Martin Greenwald	Good Shot - disrupts halfway down rampdown Ip = 1.0 MA nel = 1.8 Prf = 0.5
Mar 3 1995 01:31:46:350PM	950303016	Martin Greenwald	Good Shot but disrupts at start of rampdown Ip = 1.0 MA nel = 1.8 Prf = 0.0
Mar 3 1995 01:16:22:820PM	950303017	Martin Greenwald	Good Shot - disrupts at start of rampdown Ip = 1.0 MA nel = 1.8 Prf = 0.0
Mar 3 1995 01:39:32:040PM	950303017	Martin Greenwald	Good Shot but disrupts at start of rampdown Ip = 1.0 MA nel = 1.8 Prf = 0.0

Physics Operator Comments
Mar 2 1995 05:49:49:570PM		Robert Granetz	SL: M. Greenwald (and maybe G. McCracken in the pm) PO: R. Granetz EO: V. Bertolino This a continuation of yesterday's run to gather confinement data for the purposes of dimensionless scaling with DIII-D. Start with the last shot from yesterday, except program the density to ramp up more slowly. In the unlikely event that the desired parameter space of RF power and density is completed early enough, we may switch to Gary McCracken's MP #087. This is an impurity transport run, using a non-recycling impurity (methane).
Mar 3 1995 09:21:08:730AM		Robert Granetz	Due to problems with the CYCLE software (and the absence of our software engineers), there was about an hour's delay in starting up this run.
Mar 3 1995 09:21:27:010AM	950303001	Robert Granetz	Shot 001: Test of shot cycle software only.
Mar 3 1995 09:37:09:210AM	950303002	Robert Granetz	Shot 002: Dud. OH2 PLC current limits were set way too low (a remnant of earlier power supply tests). The EFC chopper supply also faulted.
Mar 3 1995 10:07:28:950AM	950303003	Robert Granetz	Shot 003: Plasma, disrupted late in rampdown. Ip=1.0 MA, duration=1.40 s. The density ramped up nicely. The disruption may have been due to excessive density during the rampdown, resulting in a detached plasma. Next shot: Lower the density faster after t=1 second, and ramp the density up a little faster in order to have a short flattop.
Mar 3 1995 10:11:08:050AM	950303004	Robert Granetz	Shot 004: Plasma, current made it just about all the way down. There was still detachment during the rampdown though. Also, the density rampup didn't give a good flattop. Next shot: tweak the density programming a little, including a still faster rampdown.
Mar 3 1995 10:27:28:810AM	950303005	Robert Granetz	Shot 005: Plasma, disrupted at 1.3 s during rampdown. This was a VDE, kappa was about 1.7. Little or no RF power. Next shot: increase length of density flattop a little more, and increase the outer gap to 1.5 cm from 1.0 cm by decrease RCUR by 2.5 mm
Mar 3 1995 10:46:28:250AM	950303006	Robert Granetz	Shot 006: Plasma, disrupted at 1.13 s, possibly due to an OH1 fault. This was a thermal quench disruption, and the plasma may have stayed on the midplane, since the only significant halo current was on the midplane partial rogowski. Density had a nice flattop. Outer gap was indeed 1.5 cm. Next shot: no changes.
Mar 3 1995 10:58:34:380AM	950303007	Robert Granetz	Shot 007: Plasma, disrupted at 0.69 s during the flattop. Probably a VDE. Next shot: reduce elongation (which was 1.73) by lowering ZXU by 1 cm.
Mar 3 1995 11:06:32:580AM	950303008	Robert Granetz	Shot 008: Plasma, disrupted at 0.65 s during flattop. Again a VDE, with classic growing oscillations on the x-ray zcentroid. So the change to ZXU didn't do much. Next shot: return ZXU to its former value, and now try reducing the proportional gain on the slow ZCUR from 3 to 2 after t=0.5 s.
Mar 3 1995 11:13:41:010AM	950303009	Robert Granetz	Shot 009: Plasma, disrupted at 1.16 s, again due to an OH1 fault. This shot was very similar to shot 006, in that there was a thermal quench caused by the OH1 failure forcing the plasma into the inboard wall, and the disrupting plasma remained on the midplane. Next shot: no changes.
Mar 3 1995 11:31:33:060AM	950303010	Robert Granetz	Shot 010: Plasma, current made it almost all the way down. Prf=1.4 MW. Next shot: increase duration of density flattop by another 0.1 s.
Mar 3 1995 11:43:48:270AM	950303011	Robert Granetz	Shot 011: Plasma, another nice shot. Density flattop is good. Prf=1.2 MW. Next shot: no changes.
Mar 3 1995 12:04:08:150PM	950303012	Robert Granetz	Shot 012: Plasma, disrupted at 1.30 s. Prf=1.1 MW. Density stays up too high...we need those cryo pumps! Next shot: no changes.
Mar 3 1995 12:34:10:940PM	950303013	Robert Granetz	Shot 013: Fizzle. No obvious reason why, except we've had a long delay between this shot and the last one (due to software problems). Next shot: try again.
Mar 3 1995 12:45:24:550PM	950303014	Robert Granetz	Shot 014: Plasma, became disruptive at 0.45 s, and terminated at 0.54 s. Looks dirty. Slow current rise. Next shot: try again.
Mar 3 1995 12:54:40:530PM	950303015	Robert Granetz	Shot 015: Plasma, disrupts at 1.30 s during rampdown. Prf=0.75 MW. Density won't go down much at end of shot. Next shot: no changes
Mar 3 1995 01:09:30:250PM	950303016	Robert Granetz	Shot 016: Plasma, disrupts at 1.30 s during rampdown. Prf=0.5 MW. Next shot: no RF. If it's a good shot, it will be the last one in this mini-proposal.
Mar 3 1995 01:27:31:550PM	950303017	Robert Granetz	Shot 017: Plasma, disrupts at 1.2 s, just at the beginning of rampdown. No RF, as requested. This was an upward going disruption, and had a particularly fast dI/dt of 0.93 MA/ms.
Mar 3 1995 01:28:57:750PM	950303017	Robert Granetz	This concludes the dimensionless scaling mini-proposal. From here on, Gary McCracken will be the session leader, and we will be working on MP #087, impurity transport using a non-recycling impurity, namely methane.
Mar 3 1995 01:29:11:950PM	950303018	Robert Granetz	Setup segment 2 from shot 950217034, but have a baseline shot before enabling the methane puffing from the B_side_upper valve.
Mar 3 1995 01:39:18:510PM	950303018	Robert Granetz	Shot 018: Plasma, but very short duration, due to power supply faults. There was no disruption, the loop voltage just pooped out. Next shot: try again.
Mar 3 1995 01:55:26:950PM	950303019	Robert Granetz	Shot 019: Plasma, disrupted at 0.39 s due to OH2U fault. Plasma went upwards. Next shot: try again.
Mar 3 1995 02:10:39:420PM	950303020	Robert Granetz	Shot 020: Runaways, lots of hard x-rays. Next shot: raise pre-fill from 2.0 to 2.2e-5 torr.
Mar 3 1995 02:27:11:110PM	950303021	Robert Granetz	Shot 021: Plasma, disrupted at 0.39 s. Very similar to shot 019, in that there was a growing vertical instability (but this one went down). No power supply faults. Next shot: reduce proportional gain on slow ZCUR from 3 to 2.
Mar 3 1995 02:41:37:370PM	950303022	Robert Granetz	Shot 022: Plasma, beauty of a shot. Current ramped all the way down. nl_04=1.0e20 m-2, as requested. Inner and outer gaps are both 2 cm. Next shot: turn on methane pulse (40 ms, starting at 0.6 s.)
Mar 3 1995 02:56:49:570PM	950303023	Robert Granetz	Shot 023: Plasma, disrupted at 0.44 s. It was vertically unstable again. Next shot: reduce slow ZCUR proportional gain from 2 to 1.5, and keep fast ZCUR gain up until 0.5 s. Also zero out STRKPSI.
Mar 3 1995 03:03:15:990PM	950303024	Robert Granetz	Shot 024: Plasma, nice shot. Some hard x-rays. Methane pulse was visible on the C-side camera. Next shot: raise early gas puffing. Keep methane puff the same.
Mar 3 1995 03:34:19:720PM	950303025	Robert Granetz	Shot 025: Plasma, nice shot. No hard x-rays. Methane pulse was again visible on C-side camera. Next shot: no methane puff.
Mar 3 1995 03:34:35:640PM	950303026	Robert Granetz	Shot 026: Plasma, nice shot. Next shot: increase methane pulse width from 40 to 200 ms.
Mar 3 1995 03:51:52:520PM	950303027	Robert Granetz	Shot 027: Plasma, nice shot, some hard x-rays. Methane is clearly visible on the TV. Next shot: increase CH4 plenum pressure from 5 psi to 15 psi, and decrease pulse length from 200 to 100 ms. Also tweak up early gas puff.
Mar 3 1995 03:59:51:390PM	950303028	Robert Granetz	Correction: the gas injection system is not able to fill the plenum to 15 psi, it max's out at 10 psi. The pulse width will therefore remain at 200 ms on this shot.
Mar 3 1995 04:06:16:860PM	950303028	Robert Granetz	Shot 028: Plasma, nice shot, no hard x-rays. The methane puff is very bright on the TV. Next shot: no methane puff.
Mar 3 1995 04:17:18:460PM	950303029	Robert Granetz	Shot 029: Plasma, nice background shot. Next shot: raise nl_04 from 1.0 to 1.2e20 m-2 and re-enable the strong methane puff (10 psi, 200 ms).
Mar 3 1995 04:36:47:420PM	950303030	Robert Granetz	Shot 030: Plasma, nice shot. Good divertor detachment at the higher density during the methane puff. Next shot: Same density (nl_04=1.2e20 m-2), turn off methane puff from B-side-upper, and enable methane puff using the NINJA system. For this shot, puff into the private flux zone.
Mar 3 1995 04:48:22:210PM	950303031	Robert Granetz	Shot 031: Fizzle. Next shot: raise pre-fill to 2.4e-5 torr and try again.
Mar 3 1995 05:00:01:810PM	950303032	Robert Granetz	Shot 032: Plasma, nice shot. This is the last plasma shot.
Mar 3 1995 05:00:31:370PM	950303033	Robert Granetz	Shot 033: Gas calibration shot. No power supplies. Fizzle detector effectively disabled. B-side-upper valve enabled, Ninja disabled. End of run.

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	09:17:33:870AM	Test	Ok	data system test
2	09:31:14:570AM	Plasma	Bad	chopper ioc, oh2 current limits too low
3	09:46:43:930AM	Plasma	Ok	no faults
4	10:01:56:300AM	Plasma	Ok	no faults
5	10:12:10:020AM	Plasma	Ok	no faults
6	10:29:56:650AM	Plasma	Bad	oh1 cond fault
7	10:44:10:130AM	Plasma	Ok	no faults
8	10:57:46:600AM	Plasma	Ok	no faults
9	11:08:21:190AM	Plasma	Ok	no faults
10	11:24:51:310AM	Plasma	Ok	no faults
11	11:35:55:270AM	Plasma	Ok	no faults
12	11:51:49:470AM	Plasma	Ok	no faults
13	12:27:22:750PM	Plasma	Ok	no faults
14	12:37:48:130PM	Plasma	Ok	no faults
15	12:47:49:900PM	Plasma	Ok	no faults
16	01:02:21:310PM	Plasma	Ok	no faults
17	01:13:12:060PM	Plasma	Ok	no faults
18	01:33:57:330PM	Plasma	Ok	Comm faults oh1 oh2 ef1
19	01:47:32:540PM	Plasma	Ok	OH2L Comm Fail
20	02:05:10:610PM	Plasma	Ok	No Faults.
21	02:15:48:870PM	Plasma	Ok	No Faults.
22	02:33:08:210PM	Plasma	Ok	No Faults.
23	02:44:59:880PM	Plasma	Ok	No Faults.
24	02:57:48:600PM	Plasma	Ok	No Faults.
25	03:17:37:640PM	Plasma	Ok	No Faults.
26	03:29:46:200PM	Plasma	Ok	No Faults.
27	03:42:06:880PM	Plasma	Ok	No Faults.
28	04:00:47:540PM	Plasma	Ok	No Faults.
29	04:12:48:100PM	Plasma	Ok	No Faults.
30	04:27:35:250PM	Plasma	Ok	No Faults
31	04:42:04:690PM	Plasma	Ok	No Faults.
32	04:51:02:980PM	Plasma	Ok	No Faults.
33	05:01:12:540PM	Test	Ok	gas only