| Miniproposals | ||||||||||
|
| Operators | |
| Session leader(s): | Steve Wukitch |
| Physics operator(s): | Robert Granetz |
| Engineering operator(s): | Gary Dekow,Bill Cochran |
| Engineering Operator Run Comment |
| MP 268 ICRF Commissioning.Wukitch/Granetz/Cochran. |
| Session Leader Plans |
| Physics Operators Plans |
| Session Leader Summaries |
| Entered: Jul 7 2004 03:49:23:320PM |
| Author: To Be Determined |
| Date: 15-MAY-2000 13:14 Expires: 20-MAY-2000 13:14 From: SPANNA::GRANETZ Subj: Engineering setup and run plan for Tuesday, 1000516. Engineering setup for Tuesday, 1000516: Overnight ECDC in D2, stopping 1-2 hours prior to the run. Run begins at 9:00 and ends at 17:00. Power system setup as on 1000512001 (last Friday morning). Set OH1, OH2U and OH2L fizzle delays at 300 ms. Set TF fizzle delay at 400 ms. Gas setup - fill B-top with 6 psi of D2 Hybrid enabled fill B-side lower with 1 psi of Ar Hybrid DISABLED --> **** fill B-side upper with 2 psi of Kr Hybrid DISABLED *** <-- NOTE fill C-side with 30 psi of D2 Hybrid enabled leave J-bottom as is Hybrid DISABLED The following gate valves should be enabled, assuming no vacuum problems: ECE, VUV, DNB The first two shots will be a standard OH test and a 50 kA TF test. ---------------------------------------------------------------------------- Run plan for Tuesday, 1000516: Boronization recovery shots, and MP 268 -- ICRF Commissioning Session leader: S. Wukitch Physics operator: R. Granetz Start with an OH test, followed by a 50 kA TF test. For first plasma shot, load from 1000512001 (1.0 MA, 5.2 T). During the day, we may try some inner-wall limited discharges, at the requestof the session leader. John Rice may also puff some krypton. 1. J-port as a single antenna comparison with D-port inner wall limited standard 2. density scan 1.0,1.5,2.0 nl_04 3. power scan for loading 001 OH test 002 OH test next shot: first plasma attempt step D and J-port up in power 003 fizzle 004 fizzle 005 fizzle 006 D-port made H-mode at 0.9MW Js tried to turn on into H-mode and max faulted next shot: turn off D 50ms early; delay Js by 50ms 007 fizzle 008 plasma H-mode with D only; earlier this time J3 faulted early then turned on J4 max faults at turn on looks like multipacting next shot: retune both J3 and J4 a little more power in the first step to get through the multipacting also, D gave [0.5,0.9,1.2]MW so change J programming to [0.25,0.45,0.6]MW each 009 fizzle 010 plasma late H-mode with D only, looks ELMfree J3 max faults early J4 eventually ran next shot: go to limited discharge retune J3 and J4 011 plasma - inner wall limited D as programmed J3 max faults J4 max faults next shot: go to limited discharge retune D and J 012 plasma - inner wall limited D as programmed J3 ran without faults J4 max faults but ran longer next shot: square power waveforms on J-port (it appears to be cleaning up slowly) limited discharge retune D and J 013 fizzle 014 plasma - inner wall limited early disruption ~1.37 sec D as programmed J3 ran with faults J4 max faults next shot: reduce J power to 1.4 MW 015 plasma - inner wall limited early disruption ~1.48 sec D as programmed, but had an AC phase fault after the discharge J-port ran wahoo! next shot: repeat with retune on J and power steps 016 plasma - inner wall limited D as programmed J-port ras programmed good comparison shot next shot: repeat 017 plasma - inner wall limited D as programmed J-port ras programmed good comparison shot next shot: repeat with identical power levels in D and J 018 plasma - inner wall limited D as programmed J-port ras programmed good comparison shot next shot: repeat with j4 compared to D comment: D: t=[0.97,1.04] 1.63 MW avden= 0.876 TCI = 2.65 RFheat = 5.77 3.54 MW/m3/MWinc J: t=[1.38,1.48] 1.56 MW avden= 0.9 TCI = 2.92 RFheat = 4.34 2.78 MW/m3/MWinc 019 plasma - inner wall limited D as programmed J4 ran programmed with faults at high power decent comparison shot next shot: repeat comment: D: t=[0.83,.93] 1.06 MW avden= 0.911 TCI = 2.85 RFheat = 4.04 3.81 MW/m3/MWinc J: t=[1.18,1.28] 1.19 MW avden= 0.9 TCI = 2.94 RFheat = 3.17 2.66 MW/m3/MWinc 020 plasma - inner wall limited D as programmed J4 ran programmed good comparison shot next shot: diverted with J-port first and over lap D late begin density scan comment: appears that J-port operates better as a four strap than two strap comment: D: t=[0.98,1.05] 1.66 MW avden= 0.885 TCI = 2.72 RFheat = 6.21 3.74 MW/m3/MWinc J: t=[1.37,1.47] 1.45 MW avden= 0.907 TCI = 2.91 RFheat = 3.87 2.67 MW/m3/MWinc 021 fizzle 022 plasma -H-modes D ran as programmed J faulted J3 screen overload next shot: separate D and J raise nl_04 to 1.5 023 plasma -H-modes D and J faulted next shot: ramp to obtain some RF data shorten pulse to avoid EF4 overload 024 fizzle 025 fizzle 026 plasma D-port ran J-port faulted but ran bit longer Summary: J-port heating effectiveness (relative to D-port) was improved compared to friday, but J is still less effective than D. We began a density scan to test the antenna operational density limit. In the two discharges we had, a solution appears feasible, but we need further discharges to complete the density scan. |
| Physics Operator Summaries |
| Entered: Jul 7 2004 04:37:10:753PM |
| Author: To Be Determined |
| Physics operator summary for run 1000516: Boronization recovery shots, and MP 268 -- ICRF Commissioning Session leader: S. Wukitch Physics operator: R. Granetz Engineering operators: B. Cochran/G. Dekow Summary: Not bad for a post-boronization run. There was a preponderance of fizzles, but no major problems. Shot 18 was an excellent comparison of the D-antenna and the J3+J4 antenna in a limited discharge (i.e. L-mode). It had nearly identical staircase RF power programming, and showed only a slight difference in the neutron production efficiency of the two RF systems. See the session leader's summary for more details on the ICRF performance. Scorecard: 15 plasmas 9 fizzles 0 duds 2 tests 0 aborted ---------- 26 total ------------------------------------------------------------------------------- Engineering setup for Tuesday, 1000516: Overnight ECDC in D2, stopping 1-2 hours prior to the run. Run begins at 9:00 and ends at 17:00. Power system setup as on 1000512001 (last Friday morning). Set OH1, OH2U and OH2L fizzle delays at 300 ms. Set TF fizzle delay at 400 ms. Gas setup - fill B-top with 6 psi of D2 Hybrid enabled fill B-side lower with 1 psi of Ar Hybrid DISABLED --> **** fill B-side upper with 2 psi of Kr Hybrid DISABLED *** <-- NOTE fill C-side with 30 psi of D2 Hybrid enabled leave J-bottom as is Hybrid DISABLED The following gate valves should be enabled, assuming no vacuum problems: ECE, VUV, DNB The first two shots will be a standard OH test and a 50 kA TF test. ------------------------------------------------------------------------------- Run plan for Tuesday, 1000516: Boronization recovery shots, and MP 268 -- ICRF Commissioning Session leader: S. Wukitch Physics operator: R. Granetz Start with an OH test, followed by a 50 kA TF test. For first plasma shot, load from 1000512001 (1.0 MA, 5.2 T). During the day, we may try some inner-wall limited discharges, at the request of the session leader. John Rice may also puff some krypton. ------------------------------------------------------------------------------- More than 200 nm of boron was deposited during yesterday evening's boronization. Overnight ECDC in D2 was done for 7 hours, stopping 2 hours prior to the run Hybrid coldstart done; no errors found Loaded 1000516000 (saved from yesterday), based on shot 1000512001 ------------------------------------------------------------------------------- Shot 01 -- Test; Usual Tuesday OH coax test. Coax Resis (uohm) ---- ------------ OH1 1.00 OH2U 0.27 OH2L 0.30 Irby says 'Go'. Shot 02 -- Test; 50 kA TF test under PLC control. Looks good. Next shot: go for plasma. Shot 03 -- Fizzle. Br0 is too negative. Next shot: change Br0 by +0.001 T, add 2 ms to pre-fill puff, and change IC_EF4 by +10 amps. Shot 04 -- Fizzle. Field and gas look good. Next shot: put IC_EF4 back were it was (remove 10 amps) Shot 05 -- Fizzle. Fields and gas still looking good. No obvious changes to make. Next shot: change IC_EF4 by -10 amps (yes, negative), and Br0 by -0.0003 T. If that doesn't do it, then I'll reverse direction on EF4 tweaks. Shot 06 -- Plasma. Good shot. 1.0 MA, 5.2 T, diverted, EDA H-mode. Prf=1.25 MW from D. J3 and J4 didn't run. Wp=100 kJ. Inner gap=14 mm, outer gap=18 mm. Next shot: repeat, trying to get J-port RF on. Shot 07 -- Fizzle. Fields and gas look good. Next shot: no changes, just try again Shot 08 -- Plasma. Good shot. Same as shot 06, but now with 0.5 MW from J3. Next shot: repeat, trying to get J4 going before we switch to limited plasmas. Also, enable the argon valve for this shot. Shot 09 -- Fizzle. Next shot: no changes Shot 10 -- Plasma. Good shot. Short ELMfree H-mode. J3 and J4 both came on. Next shot: change to a limited plasma. Set CLEARIN at -26 mm. (Actually, copy wire 4 from segment 2 from shot 1000512016.) Shot 11 -- Plasma. Good shot. Limited on inboard wall. D-antenna worked well, but J3, J4 didn't. Outer gap was less than 1 cm. Next shot: move RCUR in by 5 mm to expand outer gap to 18 mm. Shot 12 -- Plasma. Good shot. Limited on inboard wall. Outer gap=17 mm. D and J3 ran well. J4 ran, but not too well. Next shot: no PCS changes. Shot 13 -- Fizzle. Next shot: no changes, try again. Shot 14 -- Plasma. 1 MA disruption at t=1.37 s. D ran well, J3 so-so, J4 not to good. Barely limited on inner wall. Next shot: tweak density after t=0.8 s to keep it even more constant Shot 15 -- Plasma. 1 MA disruption at t=1.49 s. All three RF systems worked very well. Next shot: repeat, no changes Shot 16 -- Plasma. Good shot. Limited (barely) on inner wall. All RF systems worked well. H/D=3% (all day so far). Plasma startup was good on this shot (finally). Next shot: repeat, no PCS changes. Try to overlap D and J3,J4. Shot 17 -- Plasma. Good shot. Limited on inner wall. All RF systems executed nice staircases. J port heating efficiency looks nearly as good as D port (neutrons). Next shot: repeat one more time. Shot 18 -- Plasma. Good shot. Limited on inner wall. All RF systems executed nearly identical staircases. J port heating efficiency looks nearly as good as D port (neutrons). Crummy plasma startup. Next shot: repeat one more time, this time with just D and J4 (turn off J3). Also puff krypton at t=1.50 s. Shot 19 -- Plasma. Good shot. Limited on inner wall. J4 did not run well at the highest power setting. I forget to ask for the krypton valve to be enabled. Next shot: One more repeat. Also, enable krypton valve. Krypton puff is still at t=1.5 s. Shot 20 -- Plasma. Good shot. Limited on inner wall. D and J4 antennas both ran well. (J3 was off). John Rice did not see any krypton. Next shot: change to diverted plasmas by reloading RCUR and CLEARIN from segment 2 of shot 10. Also move the krypton puff to t=0.5 s. Shot 21 -- Fizzle. Next shot: change IC_EF4 by +10 amps Shot 22 -- Plasma. Good shot. Diverted. EDA H-mode. Still no sign of krypton. Max Prf=2.3 MW, with J4 and D overlapped. Next shot: raise density to nl_04=1.5e20 m-2, and increase krypton puff from 60 to 100 ms. Shot 23 -- Plasma. VDE disruption at t=1.46 s, due to EF1U railing. I'll have to shorten the flattop, since the EF1's are already set at the administrative limit. nl_04=1.4e20 m-2. No significant RF. Next shot: shorten flattop to 1.2 seconds (from 1.5 s). (Ip, ZCUR, CLEARIN, IC_EF4, and NL_04 shortened/modified) Also, reduce krypton puff back to 60 ms. Shot 24 -- Fizzle. Chalk it up to the preceding upward disruption. Next shot: try again, no changes Shot 25 -- Fizzle. Nothing obvious. Next shot: reduce pre-fill puff by 2 ms. There is a delay due to a computer crash. Shot 26 -- Plasma. Disrupted at t=1.38 s, partway down the current ramp. Prf=1.5 MW, from D only. End of run |
| Session Leader Comments | |||
| May 16 2000 09:24:30:983AM | Steve Wukitch | Date: 15-MAY-2000 13:14 Expires: 20-MAY-2000 13:14 From: SPANNA::GRANETZ Subj: Engineering setup and run plan for Tuesday, 1000516. Engineering setup for Tuesday, 1000516: Overnight ECDC in D2, stopping 1-2 hours prior to the run. Run begins at 9:00 and ends at 17:00. Power system setup as on 1000512001 (last Friday morning). Set OH1, OH2U and OH2L fizzle delays at 300 ms. Set TF fizzle delay at 400 ms. Gas setup - fill B-top with 6 psi of D2 Hybrid enabled fill B-side lower with 1 psi of Ar Hybrid DISABLED --> **** fill B-side upper with 2 psi of Kr Hybrid DISABLED *** <-- NOTE fill C-side with 30 psi of D2 Hybrid enabled leave J-bottom as is Hybrid DISABLED The following gate valves should be enabled, assuming no vacuum problems: ECE, VUV, DNB The first two shots will be a standard OH test and a 50 kA TF test. ---------------------------------------------------------------------------- Run plan for Tuesday, 1000516: Boronization recovery shots, and MP 268 -- ICRF Commissioning Session leader: S. Wukitch Physics operator: R. Granetz Start with an OH test, followed by a 50 kA TF test. For first plasma shot, load from 1000512001 (1.0 MA, 5.2 T). During the day, we may try some inner-wall limited discharges, at the requestof the session leader. John Rice may also puff some krypton. 1. J-port as a single antenna comparison with D-port inner wall limited standard 2. density scan 1.0,1.5,2.0 nl_04 3. power scan for loading 001 OH test 002 OH test | |
| May 16 2000 09:27:27:403AM | 1000516003 | Steve Wukitch | next shot: first plasma attempt step D and J-port up in power 003 fizzle |
| May 16 2000 09:44:15:187AM | 1000516004 | Steve Wukitch | 004 fizzle |
| May 16 2000 10:18:56:280AM | 1000516005 | Steve Wukitch | 005 fizzle |
| May 16 2000 10:30:32:107AM | 1000516006 | Steve Wukitch | 006 plasma H-mode from D at 0.9MW both Js had max faults at turn-on into the H-mode next shot turn D off 50ms earlier and turn Js on 50ms later |
| May 16 2000 10:39:45:327AM | 1000516007 | Steve Wukitch | 007 fizzle |
| May 16 2000 11:07:47:967AM | 1000516008 | Steve Wukitch | 008 plasma H-mode with D only; earlier this time J3 faulted early then turned on J4 max faults at turn on looks like multipacting next shot: retune both J3 and J4 a little more power in the first step to get through the multipacting also, D gave [0.5,0.9,1.2]MW so change J programming to [0.25,0.45,0.6]MW each |
| May 16 2000 11:48:30:403AM | 1000516009 | Steve Wukitch | 009 fizzle |
| May 16 2000 11:51:07:247AM | 1000516010 | Steve Wukitch | 010 plasma late H-mode with D only, looks ELMfree J3 max faults early J4 eventually ran next shot: go to limited discharge retune J3 and J4 |
| May 16 2000 12:10:56:483PM | 1000516011 | Steve Wukitch | 011 plasma - inner wall limited D as programmed J3 max faults J4 max faults next shot: go to limited discharge retune D and J |
| May 16 2000 12:23:06:780PM | 1000516012 | Steve Wukitch | 012 plasma - inner wall limited D as programmed J3 ran without faults J4 max faults but ran longer next shot: square power waveforms on J-port (it appears to be cleaning up slowly) limited discharge retune D and J |
| May 16 2000 01:11:57:373PM | 1000516014 | Steve Wukitch | 014 plasma - inner wall limited early disruption ~1.37 sec D as programmed J3 ran with faults J4 max faults next shot: reduce J power to 1.4 MW |
| May 16 2000 01:27:09:560PM | 1000516015 | Steve Wukitch | 015 plasma - inner wall limited early disruption ~1.48 sec D as programmed, but had an AC phase fault after the discharge J-port ran wahoo! next shot: repeat with retune on J |
| May 16 2000 02:37:41:497PM | 1000516016 | Steve Wukitch | 016 plasma - inner wall limited D as programmed J-port ras programmed good comparison shot next shot: repeat |
| May 16 2000 02:08:00:657PM | 1000516017 | Steve Wukitch | 017 plasma - inner wall limited D as programmed J-port ras programmed good comparison shot next shot: repeat with identical power levels in D and J |
| May 16 2000 02:23:03:560PM | 1000516018 | Steve Wukitch | 018 plasma - inner wall limited D as programmed J-port ras programmed good comparison shot next shot: repeat with j4 compared to D |
| May 16 2000 02:48:49:060PM | 1000516019 | Steve Wukitch | 019 plasma - inner wall limited D as programmed J4 ran programmed with faults at high power decent comparison shot next shot: repeat |
| May 16 2000 03:11:29:090PM | 1000516020 | Steve Wukitch | 020 plasma - inner wall limited D as programmed J4 ran programmed good comparison shot next shot: diverted with J-port first and over lap D late begin density scan |
| May 16 2000 03:46:25:170PM | 1000516021 | Steve Wukitch | 021 fizzle |
| May 16 2000 04:02:34:467PM | 1000516022 | Steve Wukitch | 022 plasma -H-modes D ran as programmed J faulted J3 screen overload next shot: separate D and J raise nl_04 to 1.5 |
| May 16 2000 04:19:02:327PM | 1000516023 | Steve Wukitch | 023 plasma D and J faulted next shot: ramp to obtain some RF data shorten pulse to avoid EF4 overload |
| Physics Operator Comments | |||
| May 15 2000 01:43:03:483PM | Robert Granetz | Engineering setup for Tuesday, 1000516: Overnight ECDC in D2, stopping 1-2 hours prior to the run. Run begins at 9:00 and ends at 17:00. Power system setup as on 1000512001 (last Friday morning). Set OH1, OH2U and OH2L fizzle delays at 300 ms. Set TF fizzle delay at 400 ms. Gas setup - fill B-top with 6 psi of D2 Hybrid enabled fill B-side lower with 1 psi of Ar Hybrid DISABLED --> **** fill B-side upper with 2 psi of Kr Hybrid DISABLED *** <-- NOTE fill C-side with 30 psi of D2 Hybrid enabled leave J-bottom as is Hybrid DISABLED The following gate valves should be enabled, assuming no vacuum problems: ECE, VUV, DNB The first two shots will be a standard OH test and a 50 kA TF test. | |
| May 15 2000 01:43:37:373PM | Robert Granetz | Run plan for Tuesday, 1000516: Boronization recovery shots, and MP 268 -- ICRF Commissioning Session leader: S. Wukitch Physics operator: R. Granetz Start with an OH test, followed by a 50 kA TF test. For first plasma shot, load from 1000512001 (1.0 MA, 5.2 T). During the day, we may try some inner-wall limited discharges, at the request of the session leader. John Rice may also puff some krypton. | |
| May 16 2000 08:52:32:547AM | Robert Granetz | More than 200 nm of boron was deposited during yesterday evening's boronization. Overnight ECDC in D2 was done for 7 hours, stopping 2 hours prior to the run Hybrid coldstart done; no errors found Loaded 1000516000 (saved from yesterday), based on shot 1000512001 | |
| May 16 2000 09:05:31:953AM | 1000516001 | Robert Granetz | Shot 01 -- Test; Usual Tuesday OH coax test. Coax Resis (uohm) ---- ------------ OH1 1.00 OH2U 0.27 OH2L 0.30 Irby says 'Go'. |
| May 16 2000 09:10:53:513AM | 1000516002 | Robert Granetz | Shot 02 -- Test; 50 kA TF test under PLC control. Looks good. Next shot: go for plasma. |
| May 16 2000 09:38:30:560AM | 1000516003 | Robert Granetz | Shot 03 -- Fizzle. Br0 is too negative. Next shot: change Br0 by +0.001 T, add 2 ms to pre-fill puff, and change IC_EF4 by +10 amps. |
| May 16 2000 09:54:04:060AM | 1000516004 | Robert Granetz | Shot 04 -- Fizzle. Field and gas look good. Next shot: put IC_EF4 back were it was (remove 10 amps) |
| May 16 2000 10:11:49:153AM | 1000516005 | Robert Granetz | Shot 05 -- Fizzle. Fields and gas still looking good. No obvious changes to make. Next shot: change IC_EF4 by -10 amps (yes, negative), and Br0 by -0.0003 T. If that doesn't do it, then I'll reverse direction on EF4 tweaks. |
| May 16 2000 10:30:24:997AM | 1000516006 | Robert Granetz | Shot 06 -- Plasma. Good shot. 1.0 MA, 5.2 T, diverted, EDA H-mode. Prf=1.25 MW from D. J3 and J4 didn't run. Wp=100 kJ. Inner gap=14 mm, outer gap=18 mm. Next shot: repeat, trying to get J-port RF on. |
| May 16 2000 10:42:24:700AM | 1000516007 | Robert Granetz | Shot 07 -- Fizzle. Fields and gas look good. Next shot: no changes, just try again |
| May 16 2000 11:07:46:340AM | 1000516008 | Robert Granetz | Shot 08 -- Plasma. Good shot. Same as shot 06, but now with 0.5 MW from J3. Next shot: repeat, trying to get J4 going before we switch to limited plasmas. Also, enable the argon valve for this shot. |
| May 16 2000 11:34:32:950AM | 1000516009 | Robert Granetz | Shot 09 -- Fizzle. Next shot: no changes |
| May 16 2000 11:51:17:967AM | 1000516010 | Robert Granetz | Shot 10 -- Plasma. Good shot. Short ELMfree H-mode. J3 and J4 both came on. Next shot: change to a limited plasma. Set CLEARIN at -26 mm. (Actually, copy wire 4 from segment 2 from shot 1000512016.) |
| May 16 2000 12:04:00:437PM | 1000516011 | Robert Granetz | Shot 11 -- Plasma. Good shot. Limited on inboard wall. D-antenna worked well, but J3, J4 didn't. Outer gap was less than 1 cm. Next shot: move RCUR in by 5 mm to expand outer gap to 18 mm. |
| May 16 2000 12:22:05:327PM | 1000516012 | Robert Granetz | Shot 12 -- Plasma. Good shot. Limited on inboard wall. Outer gap=17 mm. D and J3 ran well. J4 ran, but not too well. Next shot: no PCS changes. |
| May 16 2000 12:43:02:030PM | 1000516013 | Robert Granetz | Shot 13 -- Fizzle. Next shot: no changes, try again. |
| May 16 2000 01:03:08:780PM | 1000516014 | Robert Granetz | Shot 14 -- Plasma. 1 MA disruption at t=1.37 s. D ran well, J3 so-so, J4 not to good. Barely limited on inner wall. Next shot: tweak density after t=0.8 s to keep it even more constant |
| May 16 2000 01:30:25:560PM | 1000516015 | Robert Granetz | Shot 15 -- Plasma. 1 MA disruption at t=1.49 s. All three RF systems worked very well. Next shot: repeat, no changes |
| May 16 2000 02:06:21:907PM | 1000516016 | Robert Granetz | Shot 16 -- Plasma. Good shot. Limited (barely) on inner wall. All RF systems worked well. H/D=3% (all day so far). Plasma startup was good on this shot (finally). Next shot: repeat, no PCS changes. Try to overlap D and J3,J4. |
| May 16 2000 02:06:03:187PM | 1000516017 | Robert Granetz | Shot 17 -- Plasma. Good shot. Limited on inner wall. All RF systems executed nice staircases. J port heating efficiency looks nearly as good as D port (neutrons). Next shot: repeat one more time. |
| May 16 2000 02:32:05:860PM | 1000516018 | Robert Granetz | Shot 18 -- Plasma. Good shot. Limited on inner wall. All RF systems executed nearly identical staircases. J port heating efficiency looks nearly as good as D port (neutrons). Crummy plasma startup. Next shot: repeat one more time, this time with just D and J4 (turn off J3). Also puff krypton at t=1.50 s. |
| May 16 2000 02:51:01:810PM | 1000516019 | Robert Granetz | Shot 19 -- Plasma. Good shot. Limited on inner wall. J4 did not run well at the highest power setting. I forget to ask for the krypton valve to be enabled. Next shot: One more repeat. Also, enable krypton valve. Krypton puff is still at t=1.5 s. |
| May 16 2000 03:09:31:747PM | 1000516020 | Robert Granetz | Shot 20 -- Plasma. Good shot. Limited on inner wall. D and J4 antennas both ran well. (J3 was off). John Rice did not see any krypton. Next shot: change to diverted plasmas by reloading RCUR and CLEARIN from segment 2 of shot 10. Also move the krypton puff to t=0.5 s. |
| May 16 2000 03:26:56:920PM | 1000516021 | Robert Granetz | Shot 21 -- Fizzle. Next shot: change IC_EF4 by +10 amps |
| May 16 2000 03:47:49:810PM | 1000516022 | Robert Granetz | Shot 22 -- Plasma. Good shot. Diverted. EDA H-mode. Still no sign of krypton. Max Prf=2.3 MW, with J4 and D overlapped. Next shot: raise density to nl_04=1.5e20 m-2, and increase krypton puff from 60 to 100 ms. |
| May 16 2000 04:17:11:953PM | 1000516023 | Robert Granetz | Shot 23 -- Plasma. VDE disruption at t=1.46 s, due to EF1U railing. I'll have to shorten the flattop, since the EF1's are already set at the administrative limit. nl_04=1.4e20 m-2. No significant RF. Next shot: shorten flattop to 1.2 seconds (from 1.5 s). (Ip, ZCUR, CLEARIN, IC_EF4, and NL_04 shortened/modified) Also, reduce krypton puff back to 60 ms. |
| May 16 2000 04:28:01:090PM | 1000516024 | Robert Granetz | Shot 24 -- Fizzle. Chalk it up to the preceding upward disruption. Next shot: try again, no changes |
| May 16 2000 04:45:08:670PM | 1000516025 | Robert Granetz | Shot 25 -- Fizzle. Nothing obvious. Next shot: reduce pre-fill puff by 2 ms. |
| May 16 2000 04:57:20:717PM | 1000516025 | Robert Granetz | There is a delay due to a computer crash. |
| May 16 2000 05:06:53:513PM | 1000516026 | Robert Granetz | Shot 26 -- Plasma. Disrupted at t=1.38 s, partway down the current ramp. Prf=1.5 MW, from D only. End of run |
| Engineering Operator Comments | ||||
| Shot | Time | Type | Status | Comment |
| 1 | 08:54:14:217AM | Test | Ok | OH Coax Test Shot Only |
| 2 | 09:07:20:467AM | Test | Ok | TF 50kamp test shot only |
| 3 | 09:25:43:390AM | Plasma | Ok | Fizzle |
| 4 | 09:41:08:513AM | Plasma | Ok | |
| 5 | 09:57:05:497AM | Plasma | Ok | |
| 6 | 10:15:18:013AM | Plasma | Ok | |
| 7 | 10:37:24:950AM | Plasma | Ok | |
| 8 | 10:53:17:530AM | Plasma | Ok | |
| 9 | 11:12:24:077AM | Plasma | Ok | |
| 10 | 11:30:47:170AM | Plasma | Ok | |
| 11 | 11:53:15:187AM | Plasma | Ok | |
| 12 | 12:14:10:013PM | Plasma | Ok | |
| 13 | 12:35:03:873PM | Plasma | Ok | |
| 14 | 12:52:21:297PM | Plasma | Ok | |
| 15 | 01:13:03:717PM | Plasma | Ok | |
| 16 | 01:34:24:340PM | Plasma | Ok | |
| 17 | 01:55:02:263PM | Plasma | Ok | |
| 18 | 02:14:48:123PM | Plasma | Ok | |
| 19 | 02:36:13:827PM | Plasma | Ok | |
| 20 | 02:57:35:153PM | Plasma | Ok | |
| 21 | 03:17:42:810PM | Plasma | Ok | |
| 22 | 03:35:37:560PM | Plasma | Ok | |
| 23 | 03:55:47:640PM | Plasma | Ok | |
| 24 | 04:19:13:047PM | Plasma | Ok | |
| 25 | 04:35:45:733PM | Plasma | Ok | |
| 26 | 04:59:02:247PM | Plasma | Ok | |
| 27 | 05:21:57:687PM | Test | Ok | |