| Miniproposals | ||||||||||
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| Operators | |
| Session leader(s): | Steve Wukitch |
| Physics operator(s): | Robert Granetz |
| Engineering operator(s): | Unknown |
| Engineering Operator Run Comment |
| ^z |
| Session Leader Plans |
| Physics Operators Plans |
| Session Leader Summaries |
| Entered: Jul 7 2004 03:49:18:790PM |
| Author: To Be Determined |
| 990203 Feb 3 1999 Engineering Setup for Wednesday, 990203 Load from 990202026 (last shot yesterday): Overnight ECDC in D2 TF under hybrid control 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 24 psi of He for between-shot ECDC fill C-side with 30 psi of D2 Hybrid enabled The following gate valves should be enabled, assuming no vacuum problems: ECE only Run Plan for 990203: ------------------------------------------------------------------------------- RF conditioning requires many fiducial-like plasmas (0.8 MA to start with). Start from 990202026. The outer gap feedback signal will not be used today. Don't know about the TCI for density feedback yet. Currently the visible bremsstrahlung is being used for density control. We will try the first 5 shots without between-shot ECDC. If we get more than 2 fizzles in those first 5 shots, we'll enable ECDC between all remaining shots. Hybrid coldstart done; no errors Shot 990202026 re-loaded from yesterday into PCS. NL_ZMETER currently being used for density feedback. RF feedback confirmed off. In case TCI fails again today, reload discharge 990202012 to have a successful example to use. 001 start from where we left off yesterday rampup power from 0.1 - 0.8 MW with overlap ST1: 557 PS1: 439 ST2: 2278 PS2:1073 early disruption 002 early disruption 003 plasma - no RF trigger 004 plasma - offset in RF data (that which we collected). RF power measured in the power room. 005 RF ran with poor match on #1 but #2 ramped to 1 MW plasma 006 ST1: 557 PS1: 439 ST2: 2239 PS2:936 increased power to 1 MW both ran with few faults to about 1 MW 007 plasma ST1: 573 PS1: 423 ST2: 2239 PS2:936 increased power to 1.5 MW and had several faults in #1 HV overload on FMIT#1 008 plasma good ramp changed timing to: D-port: ramp .5-1. and E-port: ramp .5-1. 009 changed timing so D and E port ramp together D-port did not run at all 010 plasma - early disruption moved D-port before E and lowered the power 011 early disruption lowered RF power calculated new MW coef from 008 for D-port: [-.619328,.91256,-3.44056] fitting to high power (0.1-2 MW) resulted in much different coefficients than low power. The function cannot fit a range from 0.01-2 MW without a more complicated expression. calculated new MW coef from 007 for E-port: [-.736524,.622806,-2.83363] 012 plasma ST1:581 PS1:416 ST2: 2276 PS2: 1022 D port no power output. 013 low power on #1 - recalculate coefficients because the voltage appears too low from the Bira ***** NOTE ABOUT THE rf_power_done event: in the tree, the action \top.antenna.RF_POWER_S was waiting for when the rf_power_e and rf_power_d processes were done, but it was looking on SONIC. They have been changed to MHERTZ. And since we had "set noon" (set no error messages on) the synchronize command couldn't find it and just went on, assuming it was already done. Thus the seteven rf_power_done was being set prematurely. It should now be fixed. **** 014 low power on #1 again - operator error good power on #2 015 plasma good separate RF pulses ~900 kW each 016 no EF3 ST1: 582 PS1: 423 ST2: 2324 PS2: 1045 overlap #1 and #2 with #1 coming on 100 msec earlier Summary: After a rough start due to a CAMAC problem, the RF power was increased up to 3 MW for about 40 msec within a few shots. The performance then degraded and power needed to be reduced. The system resumed running cleanly at lower power before the run was terminated by a blown EF3 fuse. New MW_coefficients and DC2 and stub calibration factors for D and E-port were obtained. We also seem to have an intermittant CAMAC problem which need some attention. The RF system is not yet reliable. |
| Physics Operator Summaries |
| Entered: Jul 7 2004 04:36:59:973PM |
| Author: To Be Determined |
| Physics operator summary for run 990203. MP 214 -- ICRF conditioning SL: S. Wukitch PO: R. Granetz (asst: R. Parker; no show) The goal for today: Condition both the D and E antennas to get 2.5 MW total for 0.5 s. Summary: Today was a breeze for the physics operator. There was plasma on every shot until EF3 blew a fuse on shot 16. Most shots lasted well into rampdown. BETWEEN-SHOT ECDC IS NOT NEEDED !! Some progress was made on antenna conditioning (see session leader's summary), but the H/D ratio was very high all day, so no heating was seen. Problems: cooling was slow today. Wait times of 15 minutes were the norm. The RF camac wasn't working initially, and a long break for cell access was required to check it out. It took a very long time to bring the O2 levels up in the cell. EF3 blew a fuse on shot 16, which terminated the run prematurely. Note: the visible bremsstrahlung is still being used to control the density. Scorecard: 15 plasmas 0 fizzles 1 dud (due to power supply fault) 0 tests ---------- 16 total ------------------------------------------------------------------------------ Engineering Setup for Wednesday, 990203 Load from 990202026 (last shot yesterday): Overnight ECDC in D2 TF under hybrid control 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 24 psi of He for between-shot ECDC fill C-side with 30 psi of D2 Hybrid enabled The following gate valves should be enabled, assuming no vacuum problems: ECE only ------------------------------------------------------------------------------- Run Plan for 990203: ------------------------------------------------------------------------------- RF conditioning requires many fiducial-like plasmas (0.8 MA to start with). Start from 990202026. The outer gap feedback signal will not be used today. Don't know about the TCI for density feedback yet. Currently the visible bremsstrahlung is being used for density control. We will try the first 5 shots without between-shot ECDC. If we get more than 2 fizzles in those first 5 shots, we'll enable ECDC between all remaining shots. ------------------------------------------------------------------------------ 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") Reload 990202026 (last shot from yesterday) Confirm that RF feedback on RCUR is turned off (RF_LOAD_E = 0.0) Shot 01 -- Plasma. Short, disruptive. Terminated at 0.40 s. Vloop=4 V. NL_04=1.0e20 m-2. Vibrations on TCI are too big to use for feedback (we were using VB anyway). Next shot: no changes, no between-shot ECDC Shot 02 -- Plasma. Short. Got to 0.8 MA, then hit by brick. Terminated at t=0.41 s. Vloop got down to 2 volts. OH1 faulted due to disruption. Next shot: no changes, no between-shot ECDC Shot 03 -- Plasma. Good shot, but no RF...should have been on. Ip=0.8 MA. Duration=1.37 s. NL_04=1.0-1.2e20 m-2. Right gap=1.0 cm. Next shot: no changes. Not even thinking of between-shot ECDC any more. Shot 04 -- Plasma. Good shot, but still no RF...they're scratching their heads. Wait a minute, there was RF, but their recording CAMAC has a problem. About 1.25 MW? ECE and x-ray sawteeth get bigger around the time the RF is ostensibly on. Cell access required for RF camac, and Thomson camac. Next shot: no changes. The cell access required an extended break due to O2 levels. RF camac was made to work, but preceding problems are not understood. There was about 1.5 hours between shots 4 and 5. Shot 05 -- Plasma. Good shot. Prf=1 MW, from E antenna. Ip=0.8 MA, nl_04=1.0e20 m-2, outer gap=1.0 cm. Still using VB for density feedback. Next shot: no changes Shot 06 -- Plasma. Good shot. Prf=1.9 MW. No heating, no H-modes. Soft x-rays increase, most likely due to RF impurity generation. H/D ratio surpasses 50%, which may explain the lack of heating. Next shot: no changes Shot 07 -- Plasma. Good shot, except disrupted at 1.19 s, just after start of rampdown. Prf surpassed 2.5 MW, but with multiple faults. Soft x-rays clearly affected by the RF, including the dropouts. But still no sign of heating or H-mode. Next shot: no changes Shot 08 -- Plasma. Good shot. Max Prf=2.8 MW. It's starting to tickle the sawteeth. Outer gap is still 1.0 cm. Next shot: increase argon puff from 25 to 30 ms (at t=0.3 s) Shot 09 -- Plasma. Good shot. Only E antenna coupled. Prf=1 MW. Big effect on soft x-rays, almost nothing on ECE Next shot: no changes ECDC in helium for 5 minutes between shots 9 and 10, at Jim Terry's request (for diagnostic check out) Shot 10 -- Plasma, disrupted at t=0.81 s. Prf=2.4 MW, and it causes the density to take off. Big, sudden increase in SXR also. Vloop begins to climb too. Next shot: no changes ECDC in helium for 5 minutes between shots 10 and 11, at Jim Terry's request (for diagnostic check out) Shot 11 -- Plasma, but boy was it ugly. Disrupted at 0.66 s. Density trace shows multiple injections starting at 0.46 s. Very large x-ray emission early in the shot. Next shot: no changes, no ECDC Shot 12 -- Plasma. Good shot. Prf=1-2 MW, with lots of faulting. H/D still starts at 40% and climbs to 60+%. No signs of heating. Next shot: no changes. Shot 13 -- Plasma. Good shot. Prf=1 MW (from E only). Power room access required to check D amplifier. H/D down a couple of % from previous shots, but still huge. No heating. Next shot: no changes Shot 14 -- Plasma. Good shot. Prf=0.9 MW. H/D ratio is still creeping down, it's now at 34% before the RF. Next shot: no changes. D-port antenna should work better next shot. Shot 15 -- Plasma. Good shot. Prf=0.9 MW from each antenna, but not simultaneously (on purpose). Next shot: no PCS changes. D and E antennas should have substantial overlap on the next shot. Shot 16 -- Dud. No EF3. Next shot: extend flattop to 1.4 s to help Jim Terry debug a diagnostic problem. This entails extending nearly every active wire (except density) by 0.2 s, and extending TF current programming by 0.2 s, and changing all PLC invert times by 0.2 s. Between shots 16 and 17, a long power room access was required to work on the EF3 supply. Repairs to EF3 necessitate cancelling the remainder of the run. Changes to PCS (i.e. lengthening flattop to 1.4 s) have been saved in the pcs$data area as shot 990204000 (since John Goetz/Spencer Pitcher want this for tomorrow's run as well). Note: PLC invert times still need to be extended. |
| Session Leader Comments | |||
| Feb 3 1999 11:43:31:250AM | 990203003 | Steve Wukitch | 003 plasma - no RF trigger |
| Feb 3 1999 11:43:47:107AM | 990203004 | Steve Wukitch | 004 plasma - offset in RF data (that which we collected). RF power measured in the power room. |
| Feb 3 1999 11:44:14:467AM | 990203005 | Steve Wukitch | 005 RF ran with poor match on #1 but #2 ramped to 1 MW plasma |
| Feb 3 1999 11:59:20:170AM | 990203006 | Steve Wukitch | 006 ST1: 557 PS1: 439 ST2: 2239 PS2:936 increased power to 1 MW both ran with few faults to about 1 MW |
| Feb 3 1999 01:05:36:043PM | 990203007 | Steve Wukitch | 007 plasma ST1: 573 PS1: 423 ST2: 2239 PS2:936 increased power to 1.5 MW and had several faults in #1 HV overload on FMIT#1 |
| Feb 3 1999 02:11:21:687PM | 990203008 | Steve Wukitch | 008 plasma good ramp changed timing to: D-port: ramp .5-1. and E-port: ramp .5-1. |
| Feb 3 1999 02:11:38:450PM | 990203009 | Steve Wukitch | 009 changed timing so D and E port ramp together D-port did not run at all |
| Feb 3 1999 02:12:01:310PM | 990203010 | Steve Wukitch | 010 plasma - early disruption moved D-port before E and lowered the power |
| Feb 3 1999 02:12:40:233PM | 990203011 | Steve Wukitch | 011 early disruption lowered RF power |
| Feb 3 1999 04:19:37:653PM | 990203012 | Steve Wukitch | 012 plasma ST1:581 PS1:416 ST2: 2276 PS2: 1022 D port no power output. |
| Feb 3 1999 04:23:00:483PM | 990203013 | Steve Wukitch | 013 low power on #1 - recalculate coefficients because the voltage appears too low from the Bira |
| Feb 3 1999 04:23:18:030PM | 990203014 | Steve Wukitch | 014 low power on #1 again - operator error good power on #2 |
| Feb 3 1999 04:27:44:280PM | 990203015 | Steve Wukitch | 015 plasma good separate RF pulses ~900 kW each |
| Feb 3 1999 04:27:58:357PM | 990203016 | Steve Wukitch | 016 no EF3 ST1: 582 PS1: 423 ST2: 2324 PS2: 1045 overlap #1 and #2 with #1 coming on 100 msec earlier |
| Physics Operator Comments | |||
| Feb 3 1999 08:20:50:543AM | Robert Granetz | Engineering Setup for Wednesday, 990203 Load from 990202026 (last shot yesterday): Overnight ECDC in D2 TF under hybrid control 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 24 psi of He for between-shot ECDC fill C-side with 30 psi of D2 Hybrid enabled The following gate valves should be enabled, assuming no vacuum problems: ECE only | |
| Feb 3 1999 08:21:21:590AM | Robert Granetz | Run Plan for 990203: ------------------------------------------------------------------------------- RF conditioning requires many fiducial-like plasmas (0.8 MA to start with). Start from 990202026. The outer gap feedback signal will not be used today. Don't know about the TCI for density feedback yet. Currently the visible bremsstrahlung is being used for density control. We will try the first 5 shots without between-shot ECDC. If we get more than 2 fizzles in those first 5 shots, we'll enable ECDC between all remaining shots. | |
| Feb 3 1999 08:23:33:357AM | Robert Granetz | Hybrid coldstart done; no errors Shot 990202026 re-loaded from yesterday into PCS. NL_ZMETER currently being used for density feedback. RF feedback confirmed off. | |
| Feb 3 1999 09:35:31:403AM | 990203001 | Robert Granetz | Shot 01 -- Plasma. Short, disruptive. Terminated at 0.40 s. Vloop=4 V. NL_04=1.0e20 m-2. Vibrations on TCI are too big to use for feedback (we were using VB anyway). Next shot: no changes, no between-shot ECDC |
| Feb 3 1999 09:35:50:640AM | 990203002 | Robert Granetz | Shot 02 -- Plasma. Short. Got to 0.8 MA, then hit by brick. Terminated at t=0.41 s. Vloop got down to 2 volts. OH1 faulted due to disruption. Next shot: no changes, no between-shot ECDC |
| Feb 3 1999 09:51:56:090AM | 990203003 | Robert Granetz | Shot 03 -- Plasma. Good shot, but no RF...should have been on. Ip=0.8 MA. Duration=1.37 s. NL_04=1.0-1.2e20 m-2. Right gap=1.0 cm. Next shot: no changes. Not even thinking of between-shot ECDC any more. |
| Feb 3 1999 10:11:29:857AM | 990203004 | Robert Granetz | Shot 04 -- Plasma. Good shot, but still no RF...they're scratching their heads. Wait a minute, there was RF, but their recording CAMAC has a problem. About 1.25 MW? ECE and x-ray sawteeth get bigger around the time the RF is ostensibly on. Cell access required for RF camac, and Thomson camac. Next shot: no changes. |
| Feb 3 1999 11:45:44:513AM | 990203005 | Robert Granetz | The cell access required an extended break due to O2 levels. RF camac was made to work, but preceding problems are not understood. There was about 1.5 hours between shots 4 and 5. |
| Feb 3 1999 11:51:09:750AM | 990203005 | Robert Granetz | Shot 05 -- Plasma. Good shot. Prf=1 MW, from E antenna. Ip=0.8 MA, nl_04=1.0e20 m-2, outer gap=1.0 cm. Still using VB for density feedback. Next shot: no changes |
| Feb 3 1999 12:18:37:357PM | 990203006 | Robert Granetz | Shot 06 -- Plasma. Good shot. Prf=1.9 MW. No heating, no H-modes. Soft x-rays increase, most likely due to RF impurity generation. H/D ratio surpasses 50%, which may explain the lack of heating. Next shot: no changes |
| Feb 3 1999 12:18:46:390PM | 990203007 | Robert Granetz | Shot 07 -- Plasma. Good shot, except disrupted at 1.19 s, just after start of rampdown. Prf surpassed 2.5 MW, but with multiple faults. Soft x-rays clearly affected by the RF, including the dropouts. But still no sign of heating or H-mode. Next shot: no changes |
| Feb 3 1999 12:42:43:250PM | 990203008 | Robert Granetz | Shot 08 -- Plasma. Good shot. Max Prf=2.8 MW. It's starting to tickle the sawteeth. Outer gap is still 1.0 cm. Next shot: increase argon puff from 25 to 30 ms (at t=0.3 s) |
| Feb 3 1999 01:03:12:217PM | 990203009 | Robert Granetz | Shot 09 -- Plasma. Good shot. Only E antenna coupled. Prf=1 MW. Big effect on soft x-rays, almost nothing on ECE Next shot: no changes ECDC in helium for 5 minutes between shots 9 and 10, at Jim Terry's request (for diagnostic check out) |
| Feb 3 1999 01:36:00:403PM | 990203010 | Robert Granetz | Shot 10 -- Plasma, disrupted at t=0.81 s. Prf=2.4 MW, and it causes the density to take off. Big, sudden increase in SXR also. Vloop begins to climb too. Next shot: no changes ECDC in helium for 5 minutes between shots 10 and 11, at Jim Terry's request (for diagnostic check out) |
| Feb 3 1999 01:47:12:937PM | 990203011 | Robert Granetz | Shot 11 -- Plasma, but boy was it ugly. Disrupted at 0.66 s. Density trace shows multiple injections starting at 0.46 s. Very large x-ray emission early in the shot. Next shot: no changes, no ECDC |
| Feb 3 1999 02:06:22:500PM | 990203012 | Robert Granetz | Shot 12 -- Plasma. Good shot. Prf=1-2 MW, with lots of faulting. H/D still starts at 40% and climbs to 60+%. No signs of heating. Next shot: no changes. |
| Feb 3 1999 02:23:48:653PM | 990203013 | Robert Granetz | Shot 13 -- Plasma. Good shot. Prf=1 MW (from E only). Power room access required to check D amplifier. H/D down a couple of % from previous shots, but still huge. No heating. Next shot: no changes |
| Feb 3 1999 02:43:24:077PM | 990203014 | Robert Granetz | Shot 14 -- Plasma. Good shot. Prf=0.9 MW. H/D ratio is still creeping down, it's now at 34% before the RF. Next shot: no changes. D-port antenna should work better next shot. |
| Feb 3 1999 03:03:32:733PM | 990203015 | Robert Granetz | Shot 15 -- Plasma. Good shot. Prf=0.9 MW from each antenna, but not simultaneously (on purpose). Next shot: no PCS changes. D and E antennas should have substantial overlap on the next shot. |
| Feb 3 1999 03:31:57:090PM | 990203016 | Robert Granetz | Between shots 16 and 17, a long power room access was required to work on the EF3 supply. |
| Feb 3 1999 03:57:27:653PM | 990203016 | Robert Granetz | Shot 16 -- Dud. No EF3. Next shot: extend flattop to 1.4 s to help Jim Terry debug a diagnostic problem. This entails extending nearly every active wire (except density) by 0.2 s, and extending TF current programming by 0.2 s, and changing all PLC invert times by 0.2 s. |
| Feb 3 1999 04:07:21:733PM | 990203016 | Robert Granetz | Repairs to EF3 necessitate cancelling the remainder of the run. |
| Feb 3 1999 04:36:30:687PM | 990203016 | Robert Granetz | Changes to PCS (i.e. lengthening flattop to 1.4 s) have been saved in the pcs$data area as shot 990204000 (since John Goetz/Spencer Pitcher want this for tomorrow's run as well). Note: PLC invert times still need to be extended. |
| Engineering Operator Comments | ||||
| Shot | Time | Type | Status | Comment |
| 1 | 09:10:20:577AM | Plasma | Ok | NO FAULTS/FIZZEL |
| 2 | 09:23:57:653AM | Plasma | Ok | OH1 SELF POWERED CKT. FIRED |
| 3 | 09:41:59:483AM | Plasma | Ok | NO FAULTS/PLASMA |
| 4 | 09:59:36:733AM | Plasma | Ok | NO FAULTS |
| 5 | 11:35:03:233AM | Plasma | Ok | NO FAULTS |
| 6 | 11:52:38:060AM | Plasma | Ok | NO FAULTS |
| 7 | 12:09:35:903PM | Plasma | Ok | NO FAULTS |
| 8 | 12:31:24:607PM | Plasma | Ok | NO FAULTS |
| 9 | 12:50:34:857PM | Plasma | Ok | NO FAULTS |
| 10 | 01:11:49:293PM | Plasma | Ok | NO FAULTS |
| 11 | 01:34:38:780PM | Plasma | Ok | No Faults |
| 12 | 01:50:44:903PM | Plasma | Ok | No Faults |
| 13 | 02:12:03:060PM | Plasma | Ok | No Faults |
| 14 | 02:30:54:763PM | Plasma | Ok | No Faults |
| 15 | 02:54:37:840PM | Plasma | Ok | No Faults |
| 16 | 03:15:22:857PM | Plasma | Ok | EF3 Overvoltage Fuse Fault |