| Miniproposals | ||||||||||
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| Operators | |
| Session leader(s): | Steve Wukitch |
| Physics operator(s): | Robert Granetz |
| Engineering operator(s): | Unknown |
| Engineering Operator Run Comment |
| MP#214 |
| Session Leader Plans |
| Physics Operators Plans |
| Session Leader Summaries |
| Physics Operator Summaries |
| Entered: Jul 7 2004 04:37:09:710PM |
| Author: To Be Determined |
| Physics operator summary for run 991019: MP 214 -- ICRF commissioning SL: S. Wukitch PO: R. Granetz Summary: By the end of the day, significant power was coming out of all the transmitters and antennas. Prf transiently surpassed 4 MW on several shots. Significant molybdenum was also being generated. The H/D ratio was noticeably increased by puffing H2 through the B-side-upper valve with a plenum pressure of 10 psi and a pulse length of 0.3 s. It was also discovered that reliable TF magnet resistance readings could be obtained by making the measurements during a 50 kA flattop immediately after the end of the plasma. The TF programmed rampdown and control settings for shots 10-14 are therefore very different from normal practice. Scorecard: 8 plasmas 0 fizzles 1 dud (0 due to lack of one or more power supplies) 4 tests 1 aborted ---------- 14 total ------------------------------------------------------------------------------- Engineering Setup for Tuesday, 991019: Run will begin at 10:00. Setup power supplies from shot 991018019 (0.8 MA, 5.4 T, flattop to 1.5 s) Two hours of ECDC in D2 prior to the run. Gas setup - fill B-top with 6 psi of D2 Hybrid enabled fill B-side lower with 1 psi of Ar Hybrid enabled fill B-side upper with 6 psi of H2 Hybrid DISABLED 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 ------------------------------------------------------------------------------- Run Plan for Tuesday, 991019: MP 214 -- ICRF commissioning Session leader: S. Wukitch Physics operator: R. Granetz Load shot 991018019, with no changes, at least to begin with. Later on, we may go to 1.0 MA. ------------------------------------------------------------------------------- Note: There were two hours of ECDC in D2 prior to this run. Hybrid coldstart done; no errors found ($set default cmod$models:[hybrid.tcl] $@hybinit_dispatch $@show_bitbus_log Use editor search to verify no occurrences of "error" nor "not respond") Load 991018019; no changes Shot 01 -- Test. Data cycle test; no power. Shot 02 -- Plasma. Good shot. 0.8 MA, 1.0e20 m-2, flattop to t=1.5 s, rampdown to t=1.87 s. Prf <= 1.8 MW total, from D, J3, and J4. Short H-modes from t=1.2-1.4 s. H/D spectrometer was looking at calibration lamp on this shot...ignore the processed signal. Prad approaches 2 MW during the H-modes. There will be a delay to allow access to the RF power systems. Next shot: Steve Wukitch needs Ip flattop to be really, really flat (it's drooping by 35-40 kA). Program in a 40 kA ramp to try and compensate. Shot 03 -- Plasma. Good shot. Plasma current varies only about +/- 10 kA during the flattop. Prf <= 3 MW total, from D, J3, and J4. Short H-modes from t=1.2-1.4 s. Prad approaches 3 MW during H-modes. H/D is valid again. Next shot: reduce Btor from 5.4 to 5.2 tesla (Itf=144.4 kA) Shot 04 -- Test cycle with no power; First attempt hung. Shot 05 -- Plasma. Good shot. J-port worked really well, executing 3 steps up to 2.0 MW, each step lasting 0.3 s. D-port gave 1.5 MW as well. H-mode from t=1.2-1.4. Prad again reaches almost 3 MW. Lots of core x-ray emission. Next shot: TF-only test at full current (disable fizzle detector). Shot 06 -- Test. TF-only, at full current (144.4 kA) under hybrid control. Resistances are still increasing. TF took longer than normal to reach flattop. Next shot: Plasma. Puff in H2. Set B-side-upper pulse at 300 ms. (H2 pressure is 6 psi.) Shot 07 -- Plasma. Good shot. Two short H-modes. J-port didn't do as well as the previous shot. There was a small increase in H/D, with timing that matches the programmed H2 puff. Jim Terry puffed helium through the NINJA. Next shot: TF-only test under PLC control. Shot 08 -- Test. TF-only, at 50 kA, under PLC control. Shot 09 -- Test. Shot cycle with no power...to get TF scanner data. Next shot: Plasma and TF test. The plasma will be at 5.2 tesla, and will be immediately followed by a 50 kA TF test. Fizzle detector will be moved to t=1.5 s, to prevent it from turning off hybrid control during the extended TF rampdown. The PLC TF invert time will also be delayed to t=3.3 s for the same reason. The 50 kA flattop will be from t=2.65 to 3.25 s. Shot 10 -- Dud! Fields are not much different from earlier plasmas. Gas was okay. Next shot: reduce BR by 0.5 mT, and reduce (i.e. make more negative) EF4 by 15 amps. Shot 11 -- Plasma. Good shot. Similar to previous plasmas today, except the E-port antenna was turned on also, and gave 1.3 MW. Btor rampdown to 50 kA level after the shot took longer than expected, so the 50 kA flattop went from t=2.90 to t=3.25. There was a noticeable increase in H/D. It peaked at 8% at t=0.6 s, and then remained at 5% for the rest of the shot. Next shot: program the TF to rampdown a little faster after the end of the plasma, in order to a longer flattop at 50 kA. Shot 12 -- Plasma. Good shot. Similar to previous shot. Prf transiently surpassed 4 MW. TF flattopped at 50 kA from t=2.8 to 3.3 s. Next shot: stretch the 50 kA TF flattop to t=3.6 s. Set PLC TF invert at t=3.65 s. Shot 13 -- Plasma. Good shot. Similar to previous shot. TF flattopped at 50 kA from t=2.9 to 3.6 s. Next shot: repeat with no changes. Shot 14 -- Plasma. Disrupted at end of flattop. PF and TF crowbarred. End of run. |
| Session Leader Comments |
| Physics Operator Comments | |||
| Oct 18 1999 05:50:31:280PM | Robert Granetz | Engineering Setup for Tuesday, 991019: Run will begin at 10:00. Setup power supplies from shot 991018019 (0.8 MA, 5.4 T, flattop to 1.5 s) Two hours of ECDC in D2 prior to the run. Gas setup - fill B-top with 6 psi of D2 Hybrid enabled fill B-side lower with 1 psi of Ar Hybrid enabled fill B-side upper with 6 psi of H2 Hybrid DISABLED 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 | |
| Oct 18 1999 05:50:45:827PM | Robert Granetz | Run Plan for Tuesday, 991019: MP 214 -- ICRF commissioning Session leader: S. Wukitch Physics operator: R. Granetz Load shot 991018019, with no changes, at least to begin with. Later on, we may go to 1.0 MA. | |
| Oct 19 1999 09:35:54:890AM | Robert Granetz | Note: There were two hours of ECDC in D2 prior to this run. Hybrid coldstart done; no errors found ($set default cmod$models:[hybrid.tcl] $@hybinit_dispatch $@show_bitbus_log Use editor search to verify no occurrences of "error" nor "not respond") Load 991018019; no changes | |
| Oct 19 1999 11:42:27:043AM | 991019001 | Robert Granetz | Shot 01 -- Test. Data cycle test; no power. |
| Oct 19 1999 11:41:57:403AM | 991019002 | Robert Granetz | Shot 02 -- Plasma. Good shot. 0.8 MA, 1.0e20 m-2, flattop to t=1.5 s, rampdown to t=1.87 s. Prf <= 1.8 MW total, from D, J3, and J4. Short H-modes from t=1.2-1.4 s. H/D spectrometer was looking at calibration lamp on this shot...ignore the processed signal. Prad approaches 2 MW during the H-modes. There will be a delay to allow access to the RF power systems. Next shot: Steve Wukitch needs Ip flattop to be really, really flat (it's drooping by 35-40 kA). Program in a 40 kA ramp to try and compensate. |
| Oct 19 1999 11:40:47:733AM | 991019003 | Robert Granetz | Shot 03 -- Plasma. Good shot. Plasma current varies only about +/- 10 kA during the flattop. Prf <= 3 MW total, from D, J3, and J4. Short H-modes from t=1.2-1.4 s. Prad approaches 3 MW during H-modes. H/D is valid again. Next shot: reduce Btor from 5.4 to 5.2 tesla (Itf=144.4 kA) |
| Oct 19 1999 12:22:10:980PM | 991019004 | Robert Granetz | Shot 04 -- Test cycle with no power; First attempt hung. |
| Oct 19 1999 12:48:18:873PM | 991019005 | Robert Granetz | Shot 05 -- Plasma. Good shot. J-port worked really well, executing 3 steps up to 2.0 MW, each step lasting 0.3 s. D-port gave 1.5 MW as well. H-mode from t=1.2-1.4. Prad again reaches almost 3 MW. Lots of core x-ray emission. Next shot: TF-only test at full current (disable fizzle detector). |
| Oct 19 1999 01:08:20:577PM | 991019006 | Robert Granetz | Shot 06 -- Test. TF-only, at full current (144.4 kA) under hybrid control. Resistances are still increasing. TF took longer than normal to reach flattop. Next shot: Plasma. Puff in H2. Set B-side-upper pulse at 300 ms. (H2 pressure is 6 psi.) |
| Oct 19 1999 01:45:13:997PM | 991019007 | Robert Granetz | Shot 07 -- Plasma. Good shot. Two short H-modes. J-port didn't do as well as the previous shot. There was a small increase in H/D, with timing that matches the programmed H2 puff. Jim Terry puffed helium through the NINJA. Next shot: TF-only test under PLC control. |
| Oct 19 1999 02:32:01:873PM | 991019008 | Robert Granetz | Shot 08 -- Test. TF-only, at 50 kA, under PLC control. Next shot: Plasma. Raise H2 pressure from 6 psi to 10 psi. Keep pulse at 300 ms. |
| Oct 19 1999 04:03:45:187PM | 991019009 | Robert Granetz | Shot 09 -- Test. Shot cycle with no power...to get TF scanner data. Next shot: Plasma and TF test. The plasma will be at 5.2 tesla, and will be immediately followed by a 50 kA TF test. Fizzle detector will be moved to t=1.5 s, to prevent it from turning off hybrid control during the extended TF rampdown. The PLC TF invert time will also be delayed to t=3.3 s for the same reason. The 50 kA flattop will be from t=2.65 to 3.25 s. |
| Oct 19 1999 04:09:07:873PM | 991019010 | Robert Granetz | Shot 10 -- Dud! Fields are not much different from earlier plasmas. Gas was okay. Next shot: reduce BR by 0.5 mT, and reduce (i.e. make more negative) EF4 by 15 amps. |
| Oct 19 1999 04:18:56:280PM | 991019011 | Robert Granetz | Shot 11 -- Plasma. Good shot. Similar to previous plasmas today, except the E-port antenna was turned on also, and gave 1.3 MW. Btor rampdown to 50 kA level after the shot took longer than expected, so the 50 kA flattop went from t=2.90 to t=3.25. There was a noticeable increase in H/D. It peaked at 8% at t=0.6 s, and then remained at 5% for the rest of the shot. Next shot: program the TF to rampdown a little faster after the end of the plasma, in order to a longer flattop at 50 kA. |
| Oct 19 1999 04:42:06:107PM | 991019012 | Robert Granetz | Shot 12 -- Plasma. Good shot. Similar to previous shot. Prf transiently surpassed 4 MW. TF flattopped at 50 kA from t=2.8 to 3.3 s. Next shot: stretch the 50 kA TF flattop to t=3.6 s. Set PLC TF invert at t=3.65 s. |
| Oct 19 1999 04:58:34:967PM | 991019013 | Robert Granetz | Shot 13 -- Plasma. Good shot. Similar to previous shot. TF flattopped at 50 kA from t=2.9 to 3.6 s. Next shot: repeat with no changes. |
| Oct 19 1999 05:38:28:233PM | 991019014 | Robert Granetz | Shot 14 -- Plasma. Disrupted at end of flattop. PF and TF crowbarred. End of run. |
| Engineering Operator Comments | ||||
| Shot | Time | Type | Status | Comment |
| 1 | 06:18:31:607AM | Test | Ok | TF PEI Scanner test |
| 2 | 10:07:01:047AM | Plasma | Ok | no faults/plasma |
| 3 | 11:26:09:763AM | Plasma | Ok | (null) |
| 4 | 12:11:13:090PM | Test | Ok | No Power cycle test shot |
| 5 | 12:34:45:357PM | Plasma | Ok | (null) |
| 6 | 12:49:41:640PM | Plasma | Ok | TF Only Test |
| 7 | 01:29:19:937PM | Plasma | Ok | Plasma |
| 8 | 01:46:10:890PM | Test | Ok | TF test shot only (50kamps). |
| 9 | 02:40:06:780PM | Test | Ok | scanner test only |
| 10 | 03:49:17:060PM | Plasma | Ok | Plasma shot (fizzle) |
| 11 | 04:02:35:983PM | Plasma | Ok | No faults (plasma) |
| 12 | 04:32:30:920PM | Plasma | Ok | (null) |
| 13 | 04:51:48:310PM | Plasma | Ok | (null) |
| 14 | 05:10:55:687PM | Plasma | Bad | TF and PF type 1 faults |