Miniproposals

Miniproposal: 083a Date Filed: 2/3/1995 Title: Initial Test of the Oak Ridge Polarimeter First Author: Jim Irby Session Leader: Jim Irby (shots 1-14)

Miniproposal: 091 Date Filed: 3/2/1995 Title: Non-recycling impurity screening study in diverted and limited First Author: Ying Wang Wang Session Leader: Ying Wang Wang (shots 15-39)

Engineering Operator Run Comment

Granetz

Session Leader Plans

Physics Operators Plans

Session Leader Summaries

Entered: Jul 7 2004 03:49:13:757PM

Author: To Be Determined

Session Leader's summary of run 950519B MP# 091 Non-recycling impurity screening study in diverted and limited plasmas + some other impurity screening scaling studies Physics Operator: Granetz Session Leader: YWang Engineering Operator: V. Bertolino/J. Daigle The goal of this run is to finish the high density part of MP091 which compares impurity screening between single null diverted and limited plasmas. Since the run went better than we had expected and MP091 was completed before the end of the day, an outer gap scan and a divertor strike points scan for medium density diverted plasmas were carried out. The following is a shot-by-shot description of the run. --------------------------------------------------------------------------- This part of the run day started with shots 15 through shot 31 shot 15 -- Medium density (nl=1.2e20) shot to test the repeatability of the system in comparison with the run 950316. Nothing out of ordinary happened. Argon was injected at .5 sec with 30 ms long 90 V pulse at plenum pressure of 4psi. Good plasma. shot 16 -- High density shot.(nl=1.7e20) Disrupted at .87sec. Argon pulse was lenghthened to 35 ms. Scandium was injected but failed to get into the plasma for some unknown reasons. Diverted plasma. shot 17 -- Good plasma. Argon pulse was shortened to 30 ms. Good argon signal. Zirconium was injected instead of scandium but still failed to show up in the plasma. shot 18 -- Repeat last shot except methane was puff along with argon. Zirconium was injected at .6 sec. Methane injection made no noticable change on the argon signal. shot 19 -- Repeat of last shot except the zirconium injection was moved to .75s. Still saw no zirconium in plasma. shot 20 -- Change to limited plasma at the same density. The plasma touched the outer limiter. Good argon signal. shot 21 -- Good limited plasma, no disruption. shot 22 -- Repeat of the last shot, disrupted at .73 sec. shot 23 -- Repeat of the last shot, disrupted at .58 sec. shot 24 -- Repeat of the last shot. Dud. shot 25 -- The density was lowered.(nl=1.2e20) Back to the diverted plasmas to do outer gap scan. Plasma, disrupted at .73 sec. No methane injection. shot 26 -- Repeat of the last shot. Good plasma. Outer gap was 2.2 cm. shot 27 -- Good plasma. Outer gap was 1.7cm. shot 28 -- Good plasma. Outer gap was 1.2cm. shot 29 -- Good plasma. Outer gap was 0.7cm. shot 30 -- The outer gap was moved back to 2.2cm. The outer strike point was moved down 5 mm by moveing RXL inward. Good plasma shot. shot 31 -- The outer strike point was moved further down to hit the floor plate. Good plasma shot. ______________________________________________________________________________ Preliminary result: 1. For density of nl_04=1.7e20, the percentage of argon penetrated into the plasma for a limited plasma is roughly 1.5 times that for a diverted plasma. 2. Argon screening shows no dependancy on outer gap. 3. Argon screening shows no dependancy on strike points location.

Physics Operator Summaries

Entered: Jul 7 2004 04:36:54:457PM

Author: To Be Determined

Run summary for 950519. 1st half -- MP 083a -- Test of Faraday polarimetry 2nd half -- MP 091 -- Limiter/Divertor comparison of impurities SL: Jim Irby (1st half), Ying Wang (2nd half) PO: R. Granetz EO: V. Bertolino/J. Daigle MP 083a requires running high density shots at several currents (0.4-0.8 MA), and some shots with a 100 kA step in the current. Also a couple of shots with steps in the density. Start with shot 950518007, with density set at ne0=2.e20 m-3. MP 091 requires running high density shots and toggling between limited and diverted plasmas. Scandium (via laser blow-off) and argon are the impurities that will be used. NOTE: due to the use of the TCI as a Faraday polarimeter today, the density feedback will have to done with the Z-meter wire. The Z-meter signal is on hybrid input #83, and the central density is given by: ne0 = sqrt(input_83) * 2.9e20 m-3 Thus programmed demand = (ne0/2.9e20)**2 For ne0=2.0e20 m-3, wire 14 must be programmed for 0.48 Z-meter units. Both halves of this run went pretty much as planned. Shots 1-14 were devoted to checking out the Faraday rotation diagnostic, shots 15-31 were devoted to various aspects of impurity screening measurements, and shot 32-39 were for calibrating the impurity gas puffing valve. The machine ran very well today, with no engineering problems. The laser ablation impurity injector did have some problems, and that part of the screening measurements was not accomplished, but everything else was. As found previously, argon screening is no more than a factor of two different in similar limited vs diverted configurations. A scan of the outer gap and a scan of the strike point position showed no effect on argon screening in a moderate density (nl_04= 1.2e20 m-2), diverted plasma. Unfortunately, there was no time to do any experiments with methane today. Shot 01 -- Plasma. Good shot, ramped all the way down. Ne0=1.6e20 m-3, perhaps because Zeff=1.7. Next shot: put a fast 100 kA step in the current at 0.6 s (from 0.8 to 0.9 MA). Shot 02 -- Plasma. Ramped all the way down. Step in current looks really good, with a time response of about 30 ms. Next shot: no changes. There is a hold before the next shot while Jim Irby and C.H. Ma go down to the cell to turn on some equipment for the Faraday rotation measurement. Shot 03 -- Plasma. Good shot. Good current step. Ne0=1.7e20 m-3. TCI had a data acquisition failure...no data. Next shot: no changes. Shot 04 -- Plasma. Good shot. Good current step. Next shot: change step in current to be 200 kA at 0.6 s (from 0.7 MA to 0.9 MA). Also enable LPI at 0.9 s. Shot 05 -- Plasma, disrupted at 0.63 s, due to hitting voltage rail on OH1. We asked for a little too fast of a current ramp, I guess. Next shot: put current step back to 100 kA (copy Ip programming from shot 004). Shot 06 -- Plasma, disrupted at 1.03 s. May have been due to lithium pellet at 0.9 s. Good current step of 100 kA at 0.6 s. Next shot: no changes. There is a hold before the next shot while Jim Irby and C.H. Ma go down to the cell to change a polarizer for the Faraday rotation measurement. Shot 07 -- Plasma, disrupted at 1.00 s, probably by lithium pellet again. Good current step. Faraday rotation is having a lot of electronic noise problems. Next shot: try killer gold-doped pellet at 0.8 s. Shot 08 -- Plasma, lots of hard x-rays, disrupted 0.65 s. Next shot: raise pre-fill from 1.8 to 2.0e-5 torr. Move killer gold-doped (1-2 mg) lithium pellet injection to 0.9 s. There is a hold before the next shot while Jim Irby and C.H. Ma go down to the cell to check on the Faraday rotation diagnostic. Shot 09 -- Plasma, good shot. No gold was seen, although small bits of lithium did get in. Still a lot of noise on the Faraday diagnostic. Next shot: no changes. There is a hold before the next shot while Jim Irby and C.H. Ma go down to the cell to check on the Faraday rotation diagnostic. Shot 10 -- Plasma. Killed by gold-doped pellet at 0.918 s, but current quench was not noticeably faster. Next shot: repeat, except no lithium pellet injection. Shot 11 -- Plasma, good shot. Next shot: repeat, except with plain lithium pellet injection at 0.9 s (no gold). Shot 12 -- Plasma, good shot. Medium size lithium pellet at 0.9 s. Next shot: program in a factor of 2 jump in density, starting at t=0.5 s. (from ne0=2.0 to 4.0e20 m-3) Shot 13 -- Plasma, disrupted at 1.01 s due to lithium pellet. Density ramp in center was unimpressive, to put it mildly, but there was a large rise in the edge Thomson channels. Next shot: program in a density jump from ne0=2.0 to 3.0e20 m-3. No lithium pellet injection. Shot 14 -- Plasma, good shot. Definitely saw something on the Faraday rotation signal. End of first half of run. There's a break in the run while Jim Irby re-enables the interferometer for density measurements. Shot 15 -- Start of MP 091. Remove the jump in the plasma current, and switch density feedback to use NL_04 instead of the Z-meter. Set density to nl_04=1.2e20 m-2 and current to 0.8 MA, keeping the same diverted configuration that we ran during the first half of today. Program in a 30 ms argon puff from t=0.50 to 0.53 s. Plasma, good shot. NL_04=1.2e20 m-2. Next shot: increase density to nl_04=1.7e20 m-2, and stretch argon pulse length from 30 to 35 ms. Shot 16 -- Plasma, disrupted at 0.87 s. Density made it to nl_04=1.7e20 m-2. Next shot: shorten argon pulse from 35 to 30 ms. Shot 17 -- Plasma, disrupted at 1.00 s. Good argon signal. No scandium. Next shot: have both an argon puff and a methane puff. Shot 18 -- Plasma, disrupted at 0.86 s. Argon and methane puffed in, and zirconium injected at 0.6 s. Next shot: repeat, except move zirconium injection to 0.75 s, and turn off methane puff. Shot 19 -- Plasma, disrupted at 0.88 s. Impurity injector does not seen to be working today. Good argon signal. Next shot: change to limited configuration. Program CLEARIN for -0.05 (instead of 0.) and ZXL for -0.05 (instead of 0). Also shorten argon pulse from 30 to 25 ms. Shot 20 -- Plasma, disrupted at 0.62 s. It was limited, but it touched the outer limiter also. It was also just 2 mm out of range of the fast scanning probe. Next shot: move RCUR in by 8 mm and ZCUR down by 8 mm. Shot 21 -- Plasma, good limited shot, no disruption. Fairly well limited according to Brian's flush mount probes and a detailed flux mapping. Argon is a factor of 2 higher than in shot 19 (the last diverted shot). Next shot: repeat, with the fast scanning probe enabled. Shot 22 -- Plasma, disrupted at 0.73 s, maybe due to a molybdenum injection. Fast scanning probe got one scan of SOL. Next shot: repeat, with methane puff enabled also. Shot 23 -- Plasma, disrupted at 0.58 s. Next shot: try one more time, no changes. Shot 24 -- Dud! No obvious reason why. Because of time constraints, we have to give up on these limited plasmas now. Next shot: back to diverted plasmas, at densities of nl_04=1.2e20. Leave argon puff on, but turn off methane. Shot 25 -- Plasma, disrupted at 0.73 s. Unexplained injection or something. Magnetics traq_2 failed, so no EFIT. Next shot: repeat with no changes. Shot 26 -- Plasma, good shot. Good argon signal. NL_04=1.2e20 m-2. Outer gap is 2.2 cm. Next shot: reduce outer gap to 1.5 cm by moving RCUR out by 3.5 mm. Shot 27 -- Plasma, good shot. Good argon signal. Outer gap is 1.7 cm. Next shot: reduce outer gap to 1.2 cm by moving RCUR out again by another 2.5 mm. Shot 28 -- Plasma, good shot. Good argon signal. Outer gap is 1.2 cm. Next shot: reduce outer gap to 0.5 cm by moving RCUR out again by a further 4 mm. Shot 29 -- Plasma, good shot. Good argon signal. Outer gap is 0.7 cm. Next shot: return to original outer gap (shot 026) and start strike point scan. Do this by moving RXL in by 1 cm. Ying Wang reports that this gap scan (shots 26 to 29, outer gap=22 to 7 mm) showed virtually no variation in argon screening. There was, however, a noticeable difference between argon content of shots 26 and 15. These were identical shots, with the only difference being that 15 was the first shot with argon today. Apparently, clean walls do indeed pump a little argon. Shot 30 -- Plasma, good shot. Strike point moved down by 5 mm. Next shot: move strike point further down by moving RXL in by another 0.8 cm. Shot 31 -- Plasma, good shot. Strike point moved further down and hit the floor plate! Ying Wang reports that there is virtually no variation in argon screening with outer strike point position. Last plasma shot of the run. There will now be a number of gas calibration test shots (no power supplies). The deuterium valve (A-side) and the fizzle detector will be disabled. All argon and methane puffing will be through the B-side-lower valve (pulse-gas-1, hybrid wire 15) Shot 32 -- Argon, 4 psi, 90 volts, 30 ms pulse width No gas went in. I should have done the pulse in segment 1, since the pulse is requested to start at t=0 s. Shot 33 -- Argon, 4 psi, 90 volts, 30 ms pulse width Shot 34 -- Argon, 4 psi, 90 volts, 1.50 s pulse width The pulse only lasted 100 ms, because segment 1 switches off at t=0.1 s. Another screw up by yours truly. On the following shots I'll delay the start of segment 2 as needed. Shot 35 -- Methane, 3 psi, 100 volts, 100 ms pulse width There was a gas fill fault. No gas was puffed. Shot 36 -- Methane, 3 psi, 100 volts, 100 ms pulse width (retry) Shot 37 -- Methane, 3 psi, 100 volts, 400 ms pulse width Shot 38 -- Methane, 6.6 psi, 100 volts, 100 ms pulse width Shot 39 -- Methane, 6.6 psi, 100 volts, 400 ms pulse width End of run

Session Leader Comments

Physics Operator Comments
May 18 1995 06:20:58:400PM		Robert Granetz	Run summary for 950518. 1st half -- MP 083a -- Test of Faraday polarimetry 2nd half -- MP 091 -- Limiter/Divertor comparison of impurities SL: Jim Irby (1st half), Ying Wang (2nd half) PO: R. Granetz EO: MP 083a requires running high density shots at several currents (0.4-0.8 MA), and some shots with a 100 kA step in the current. Also a couple of shots with steps in the density. Start with shot 950518007, with density set at ne0=2.e20 m-3. MP 091 requires running high density shots and toggling between limited and diverted plasmas. Scandium (via laser blow-off) and carbon (via methane injection) are the impurities that will be used.
May 18 1995 06:21:35:470PM		Robert Granetz	NOTE: due to the use of the TCI as a Faraday polarimeter today, the density feedback will have to done with the Z-meter wire. The Z-meter signal is on hybrid input #83, and the central density is given by: ne0 = sqrt(input_83) * 2.9e20 m-3 Thus programmed demand = (ne0/2.9e20)**2 For ne0=2.0e20 m-3, wire 14 must be programmed for 0.48 Z-meter units.
May 19 1995 08:37:04:930AM	950519001	Robert Granetz	Shot 01 -- Plasma. Good shot, ramped all the way down. Ne0=1.6e20 m-3, perhaps because Zeff=1.7. Next shot: put a fast 100 kA step in the current at 0.6 s (from 0.8 to 0.9 MA).
May 19 1995 08:43:24:320AM	950519002	Robert Granetz	Shot 02 -- Plasma. Ramped all the way down. Step in current looks really good, with a time response of about 30 ms. Next shot: repeat.
May 19 1995 08:44:41:290AM	950519002	Robert Granetz	There is a hold before the next shot while Jim Irby and C.H. Ma go down to the cell to turn on some equipment for the Faraday rotation measurement.
May 19 1995 09:08:06:170AM	950519003	Robert Granetz	Shot 03 -- Plasma. Good shot. Good current step. Ne0=1.7e20 m-3. TCI had a data acquisition failure...no data. Next shot: no changes.
May 19 1995 09:21:11:900AM	950519004	Robert Granetz	Shot 04 -- Plasma. Good shot. Good current step. Next shot: change step in current to be 200 kA at 0.6 s (from 0.7 MA to 0.9 MA). Also enable LPI at 0.9 s.
May 19 1995 09:32:43:980AM	950519005	Robert Granetz	Shot 05 -- Plasma, disrupted at 0.63 s, due to hitting voltage rail on OH1. We asked for a little too fast of a current ramp, I guess. Next shot: put current step back to 100 kA (copy Ip programming from shot 004).
May 19 1995 09:48:47:670AM	950519006	Robert Granetz	Shot 06 -- Plasma, disrupted at 1.03 s. May have been due to lithium pellet at 0.9 s. Good current step of 100 kA at 0.6 s. Next shot: no changes.
May 19 1995 09:49:05:170AM	950519006	Robert Granetz	There is a hold before the next shot while Jim Irby and C.H. Ma go down to the cell to change a polarizer for the Faraday rotation measurement.
May 19 1995 10:24:56:590AM	950519007	Robert Granetz	Shot 07 -- Plasma, disrupted at 1.00 s, probably by lithium pellet again. Good current step. Faraday rotation is having a lot of electronic noise problems. Next shot: try killer gold-doped pellet at 0.8 s.
May 19 1995 10:28:42:120AM	950519008	Robert Granetz	Shot 08 -- Plasma, lots of hard x-rays, disrupted 0.65 s. Next shot: raise pre-fill from 1.8 to 2.0e-5 torr. Move killer gold-doped (1-2 mg) lithium pellet injection to 0.9 s.
May 19 1995 10:29:04:520AM	950519008	Robert Granetz	There is a hold before the next shot while Jim Irby and C.H. Ma go down to the cell to check on the Faraday rotation diagnostic.
May 19 1995 10:53:20:910AM	950519009	Robert Granetz	Shot 09 -- Plasma, good shot. No gold was seen, although small bits of lithium did get in. Still a lot of noise on the Faraday diagnostic. Next shot: no changes.
May 19 1995 10:53:33:260AM	950519009	Robert Granetz	There is a hold before the next shot while Jim Irby and C.H. Ma go down to the cell to check on the Faraday rotation diagnostic.
May 19 1995 11:42:48:740AM	950519010	Robert Granetz	Shot 10 -- Plasma. Killed by gold-doped pellet at 0.918 s, but current quench was not noticeably faster. Next shot: repeat, except no lithium pellet injection.
May 19 1995 11:47:15:930AM	950519011	Robert Granetz	Shot 11 -- Plasma, good shot. Next shot: repeat, except with plain lithium pellet injection at 0.9 s (no gold).
May 19 1995 12:08:18:900PM	950519012	Robert Granetz	Shot 12 -- Plasma, good shot. Medium size lithium pellet at 0.9 s. Next shot: program in a factor of 2 jump in density, starting at t=0.5 s.
May 19 1995 12:22:03:520PM	950519013	Robert Granetz	Shot 13 -- Plasma, disrupted at 1.01 s due to lithium pellet. Density ramp in center was unimpressive, to put it mildly, but there was a large rise in the edge Thomson channels. Next shot: program in a density jump from ne0=2.0 to 3.0e20 m-3. No lithium pellet injection.
May 19 1995 12:35:49:090PM	950519014	Robert Granetz	Shot 14 -- Plasma, good shot. Definitely saw something on the Faraday rotation signal. End of first half of run.
May 19 1995 12:39:19:530PM	950519015	Robert Granetz	There's a break in the run while Jim Irby re-enables the interferometer for density measurements.
May 19 1995 12:49:28:440PM	950519015	Robert Granetz	Shot 15 -- Start of MP 091. Remove the jump in the plasma current, and switch density feedback to use NL_04 instead of the Z-meter. Set density to nl_04=1.2e20 m-2 and current to 0.8 MA, keeping the same diverted configuration that we ran during the first half of today. Program in a 30 ms argon puff from t=0.50 to 0.53 s.
May 19 1995 01:37:38:510PM	950519016	Robert Granetz	Shot 16 -- Plasma, disrupted at 0.87 s. Density made it to nl_04=1.7e20 m-2. Next shot: shorten argon pulse from 35 to 30 ms.
May 19 1995 01:37:51:460PM	950519017	Robert Granetz	Shot 17 -- Plasma, disrupted at 1.00 s. Good argon signal. No scandium. Next shot: have both an argon puff and a methane puff.
May 19 1995 01:52:02:990PM	950519018	Robert Granetz	Shot 18 -- Plasma, disrupted at 0.86 s. Argon and methane puffed in, and zirconium injected at 0.6 s. Next shot: repeat, except move zirconium injection to 0.75 s, and turn off methane puff.
May 19 1995 02:02:33:520PM	950519019	Robert Granetz	Shot 19 -- Plasma, disrupted at 0.88 s. Impurity injector does not seen to be working today. Good argon signal. Next shot: change to limited configuration. Program CLEARIN for -0.05 (instead of 0.) and ZXL for -0.05 (instead of 0). Also shorten argon pulse from 30 to 25 ms.
May 19 1995 02:20:17:700PM	950519020	Robert Granetz	Shot 20 -- Plasma, disrupted at 0.62 s. It was limited, but it touched the outer limiter also. It was also just 2 mm out of range of the fast scanning probe. Next shot: move RCUR in by 8 mm and ZCUR down by 8 mm.
May 19 1995 02:34:50:510PM	950519021	Robert Granetz	Shot 21 -- Plasma, good limited shot, no disruption. Fairly well limited according to Brian's flush mount probes, but perhaps not as good as we've had previously. Argon is a factor of 2 higher than in shot 19 (the last diverted shot). Next shot: repeat, with the fast scanning probe enabled.
May 19 1995 02:44:05:980PM	950519022	Robert Granetz	Shot 22 -- Plasma, disrupted at 0.73 s, maybe due to a molybdenum injection. Fast scanning probe got one scan of SOL. Next shot: repeat, with methane puff enabled also.
May 19 1995 02:55:18:460PM	950519023	Robert Granetz	Shot 23 -- Plasma, disrupted at 0.58 s. Next shot: try one more time, no changes.
May 19 1995 03:09:01:710PM	950519024	Robert Granetz	Shot 24 -- Dud! No obvious reason why. Because of time constraints, we have to give up on these limited plasmas now. Next shot: back to diverted plasmas, at densities of nl_04=1.2e20. Leave argon puff on, but turn off methane.
May 19 1995 03:21:46:730PM	950519025	Robert Granetz	Shot 25 -- Plasma, disrupted at 0.73 s. Unexplained injection or something. Magnetics traq_2 failed, so no EFIT. Next shot: repeat with no changes.
May 19 1995 03:34:54:510PM	950519026	Robert Granetz	Shot 26 -- Plasma, good shot. Good argon signal. NL_04=1.2e20 m-2. Outer gap is 2.2 cm. Next shot: reduce outer gap to 1.5 cm by moving RCUR out by 3.5 mm.
May 19 1995 03:43:08:960PM	950519027	Robert Granetz	Shot 27 -- Plasma, good shot. Good argon signal. Outer gap is Next shot: reduce outer gap to 1.0 cm by moving RCUR out again by another 2.5 mm.
May 19 1995 03:56:48:360PM	950519028	Robert Granetz	Shot 28 -- Plasma, good shot. Good argon signal. Outer gap is 1.2 cm. Next shot: reduce outer gap to 0.5 cm by moving RCUR out again by a further 4 mm.
May 19 1995 04:13:37:810PM	950519029	Robert Granetz	Shot 29 -- Plasma, good shot. Good argon signal. Outer gap is 0.7 cm. Next shot: return to original outer gap (shot 026) and start strike point scan. Do this by moving RXL in by 1 cm.
May 19 1995 04:27:34:440PM	950519030	Robert Granetz	Shot 30 -- Plasma, good shot. Strike point moved down by 5 mm. Next shot: move strike point further down by moving RXL in by another 0.8 cm.
May 19 1995 04:48:33:790PM	950519031	Robert Granetz	Shot 31 -- Plasma, good shot. Strike point moved further down and hit the floor plate! Ying Wang reports that there is virtually no variation in argon screening with outer strike point position. Last plasma shot of the run.
May 19 1995 04:49:03:950PM	950519032	Robert Granetz	There will now be a number of gas calibration test shots (no power supplies). The deuterium valve (A-side) and the fizzle detector will be disabled. All argon and methane puffing will be through the B-side-lower valve (pulse-gas-1, hybrid wire 15) Shot 32 -- Argon, 4 psi, 90 volts, 30 ms pulse width No gas went in. I should have done the pulse in segment 1, since the pulse is requested to start at t=0 s.
May 19 1995 04:52:49:730PM	950519033	Robert Granetz	Shot 33 -- Argon, 4 psi, 90 volts, 30 ms pulse width
May 19 1995 04:58:21:090PM	950519034	Robert Granetz	Shot 34 -- Argon, 4 psi, 90 volts, 1.50 s pulse width
May 19 1995 05:08:25:220PM	950519034	Robert Granetz	The pulse only lasted 100 ms, because segment 1 switches off at t=0.1 s. Another screw up by yours truly.
May 19 1995 05:08:11:910PM	950519035	Robert Granetz	Shot 35 -- Methane, 3 psi, 100 volts, 100 ms pulse width
May 19 1995 05:10:18:830PM	950519035	Robert Granetz	There was a gas fill fault. No gas was puffed.
May 19 1995 05:15:45:220PM	950519036	Robert Granetz	Shot 36 -- Methane, 3 psi, 100 volts, 100 ms pulse width (retry)
May 19 1995 05:22:07:040PM	950519037	Robert Granetz	Shot 37 -- Methane, 3 psi, 100 volts, 400 ms pulse width
May 19 1995 05:29:09:250PM	950519038	Robert Granetz	Shot 38 -- Methane, 6.6 psi, 100 volts, 100 ms pulse width
May 19 1995 05:36:37:130PM	950519039	Robert Granetz	Shot 39 -- Methane, 6.6 psi, 100 volts, 400 ms pulse width

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	08:20:37:930AM	Plasma	Ok
2	08:35:33:290AM	Plasma	Ok
3	09:00:52:010AM	Plasma	Ok
4	09:12:52:620AM	Plasma	Ok
5	09:24:36:240AM	Plasma	Ok
6	09:37:07:540AM	Plasma	Ok
7	10:07:12:580AM	Plasma	Ok	oh2l comm fault after disruption
8	10:20:44:380AM	Plasma	Ok	oh2l comm fault after the disruption
9	10:39:56:670AM	Plasma	Ok
10	11:29:54:800AM	Plasma	Ok
11	11:42:04:300AM	Plasma	Ok
12	11:55:14:040AM	Plasma	Ok
13	12:10:14:370PM	Plasma	Ok
14	12:22:59:040PM	Plasma	Ok
15	12:56:33:350PM	Plasma	Ok
16	01:08:38:540PM	Plasma	Ok
17	01:22:30:680PM	Plasma	Ok
18	01:41:28:450PM	Plasma	Ok
19	01:53:45:580PM	Plasma	Ok
20	02:06:51:860PM	Plasma	Ok
21	02:20:20:130PM	Plasma	Ok
22	02:35:09:230PM	Plasma	Ok
23	02:48:23:580PM	Plasma	Ok
24	03:00:15:600PM	Plasma	Ok
25	03:14:11:440PM	Plasma	Ok
26	03:25:48:220PM	Plasma	Ok
27	03:37:50:980PM	Plasma	Ok
28	03:49:37:470PM	Plasma	Ok
29	04:01:06:600PM	Plasma	Ok
30	04:16:03:660PM	Plasma	Ok
31	04:30:48:240PM	Plasma	Ok	no faults
32	04:42:08:880PM	Test	Ok	Gas PuFF Test.
33	04:49:09:430PM	Test	Ok	Gas puff test.
34	04:55:35:670PM	Test	Ok	Gas Puff Test.
35	05:07:19:850PM	Test	Ok	Gas Puff Test.
36	05:13:55:620PM	Test	Ok	Gas Puff Test .
37	05:20:50:210PM	Test	Ok	Gas Puff TesT.
38	05:27:55:960PM	Test	Ok	Gas PUFF Test.
39	05:35:31:310PM	Test	Ok	Gas Puff Test .