| Miniproposals | ||||||||||
|
| Operators | |
| Session leader(s): | Steve Wukitch |
| Physics operator(s): | Steve Wolfe |
| Engineering operator(s): | Bill Cochran,Bill Byford,Bill Parkin,Gary Dekow |
| Engineering Operator Run Comment |
| Purpose: MP #345 MCCD/Wukitch/Wolfe/Cochran/Dekow |
| Session Leader Plans |
| Physics Operators Plans |
| Session Leader Summaries |
| Entered: Jul 7 2004 03:49:01:587PM |
| Author: Steve Wukitch |
| Engineering setup and run plan for Wednesday, July 16, 2003 MP#345 MCCD SL: Wukitch PO: wolfe This run requires 8T operation. All required bus work inspections/re-torques should be performed prior to the run. Bus temperatures need to be monitored between shots. Engineering Setup: overnight ECDC in D2, stopping 1-2 hours prior to the run. Power system as on 1010803010 Except: TF PLC current limit at 175kA (we'll change this as the run proceeds) digitizer start at -1.6sec Acoils as on 1030711040 (+Dtop -Dbot -Jtop +Jbot) and enabled 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 15 psi of He3 Hybrid Enabled (as is) fill C-side with 30 psi of D2 Hybrid enabled The following gate valves should be enabled, assuming no vacuum problems: ECE, VUV, DNB, PCI, Zbolo-shutter RF setup: in RUN ON by 8:00AM ---------------------------------------------------- Run Plan: We will start with a lower single null 800kA discharge as on 1030710010 with target density of nl04=8e19. Raise TF over 6 shots to 8T as follows: Nominal BT hybrid current PLC limit -------- ------------- ---------- 5.4 150 175 6 170 175 6.5 185 190 7 200 205 7.5 215 220 8 230 235 Since we will just be verifying proper TF operation during this sequence, we won't need to repeat shots because of fizzles. While we're doing that we can try adjusting the He3 puff, starting with an 80msec pulse as on 1010803010 (but note that the plenum pressure was only 6psi for that run). Once we're up to 8T, we can scan the He3 puff to optimize the near-axis mode conversion, then vary RF phasing for co and counter current drive. Assuming MSE is seeing an effect, we may need to reserve the final 60 to 90 minutes for calibration shots. *********************************************************************************** Lost the driver bias on FMIT#2. We suspect a problem with its transformer and fan. We will investigate later. 001 BT~5.4, Ip~0.8 MA, nl_04~0.8, SNL D: 0.6 [0.7,1.3] sec J: 1.2 [0.7,1.3] sec result: plasma D: no gate J: ran one fault next field is 6 T 002 BT~6, Ip~0.8 MA, nl_04~0.8, SNL D: 0.6 [0.7,1.3] sec J: 1.2 [0.7,1.3] sec result: plasma D: ran clean J: ran clean next field is 6.5 T Disconnected the driver bias at the output of the supply and the supply appears fine. 003 BT~6.5, Ip~0.8 MA, nl_04~0.8, SNL D: 0.6 [0.7,1.3] sec J: 1.8 [0.7,1.3] sec result: plasma D: ran multiple faults J: ran two faults next field is 7 T 004 BT~7, Ip~0.8 MA, nl_04~0.8, SNL D: 0. [0.7,1.3] sec J: 0. [0.7,1.3] sec result: plasma next field is 7.6 T 005 BT~7.6, Ip~0.8 MA, nl_04~0.8, SNL D: 0.6 [0.7,1.2] sec J: 1.8 [0.7,1.2] sec result: plasma D: ran faults J: ran faults next field is 8 T fairly strong response in the e- temperature at ~0.75 m 006 BT~8, Ip~0.8 MA, nl_04~0.8, SNL D: 0.6 [0.7,1.2] sec J: 1.8 [0.7,1.2] sec result: plasma - marfe D: ran faults J: ran faults mode conversion is inside q=1 lower He3 puff from 80 msec to 60 msec 007 BT~8, Ip~0.8 MA, nl_04~0.8, SNL D: 1.0 [0.7,1.2] sec J: 2.0 [0.7,1.2] sec phase is [0,pi,pi,0] (digital phase shifter is 140deg) result: plasma D: ran 6 faults J: ran max faults next field is 8.1 T 008 BT~8.1, Ip~0.8 MA, nl_04~0.8, SNL D: 1.0 [0.7,1.2] sec J: 2.0 [0.7,1.2] sec phase is [0,pi,pi,0] (digital phase shifter is 140deg) result: plasma D: ran 4 faults J: ran 3 faults lower target density to 0.6 008 BT~8.1, Ip~0.8 MA, nl_04~0.8, SNL D: 1.0 [0.7,1.2] sec J: 2.0 [0.7,1.2] sec phase is [0,pi,pi,0] (digital phase shifter is 140deg) result: plasma D: ran 4 faults J: ran 3 faults next field is 8.0T 009 BT~8.1, Ip~0.8 MA, nl_04~0.8, SNL D: 1.0 [0.7,1.2] sec J: 1.2 [0.7,1.2] sec phase is [0,pi,pi,0] (digital phase shifter is 140deg) result: plasma D: ran 4 faults J: ran clean observe two (for 78 and 80.5) mode conversion surfaces sawtooth inversion radius appears to shrink with electron heating next phase is -90deg (digital phase shifter is 30deg) 010 BT~8.0, Ip~0.8 MA, nl_04~0.8, SNL D: 0.9 [0.7,1.2] sec J: 1.5 [0.7,1.2] sec -90deg (dps=30deg) result: plasma D: ran 3 faults J: ran 5 trips sawteeth are modified 011 BT~8.0, Ip~0.8 MA, nl_04~0.8, SNL D: 1.0 [0.7,1.2] sec J: 1.5 [0.7,1.2] sec -90deg (dps=30deg) result: plasma D: ran clean J: ran faults but better towards end of shot sawteeth are modified with J-port 012 BT~8.0, Ip~0.8 MA, nl_04~0.8, SNL D: 1.0 [0.6,1.25] sec J: 1.3 [0.7,1.2] sec -90deg (dps=30deg) result: plasma D: ran 3 faults J: ran clean sawteeth become shorter with J-port 013 BT~8.0, Ip~0.8 MA, nl_04~0.8, SNL D: 1.0 [0.6,1.25] sec J: 1.3 [0.7,1.2] sec +90deg (dps=220deg) result: plasma D: ran 2 faults J: ran 3 faults sawteeth still change with J-port 014 BT~8.0, Ip~0.8 MA, nl_04~0.8, SNL D: 1.0 [0.6,1.25] sec J: 1.3 [0.7,1.2] sec +90deg (dps=220deg) result: plasma D: ran 2 faults J: ran 2 faults change gas puff to 30 msec appears the He3 has creeped upward from Chromex 015 BT~8.0, Ip~0.8 MA, nl_04~0.8, SNL D: 1.0 [0.6,1.25] sec J: 1.3 [0.7,1.2] sec +90deg (dps=220deg) result: plasma D: ran 3 faults J: ran 2 faults He3 is back to 010 but still off axis - H fraction has increased lower puff to 15 msec 016 BT~8.0, Ip~0.8 MA, nl_04~0.8, SNL D: 1.0 [0.6,1.25] sec J: 1.3 [0.7,1.2] sec +90deg (dps=220deg) result: plasma D: ran 3 faults J: ran clean He3 is back to 010 but still off axis - H fraction has increased lower puff to 15 msec nice shot 017 BT~8.0, Ip~0.8 MA, nl_04~0.8, SNL D: 1.0 [0.6,1.25] sec J: 1.3 [0.7,1.2] sec -90deg (dps=30deg) result: plasma D: ran 8 faults J: ran clean mode conversion is at 66 cm nice shot 018 BT~8.0, Ip~0.8 MA, nl_04~0.8, SNL D: 1.0 [0.6,1.25] sec J: 1.3 [0.7,1.2] sec 0deg (dps=140deg) result: plasma D: ran 3 faults J: ran max faults mode conversion is at 66 cm 019 BT~8.0, Ip~0.8 MA, nl_04~0.8, SNL D: 1.0 [0.6,1.25] sec J: 1.3 [0.7,1.2] sec 0deg (dps=140deg) result: plasma D: ran 8 faults J: ran clean mode conversion is at 66 cm good comparison to +/-90deg dithering 020 BT~8.0, Ip~0.8 MA, nl_04~0.8, SNL D: 0.75 [0.6,1.25] sec J: 2.0 [0.7,1.2] sec +90deg (dps=220deg) result: plasma D: ran 4 faults J: ran 2 faults mode conversion is at 66 cm sawteeth period is no different than during D-port dithering 021 BT~8.0, Ip~0.8 MA, nl_04~0.8, SNL D: 0.75 [0.6,1.25] sec J: 2.0 [0.7,1.2] sec -90deg (dps=30deg) result: plasma D: ran 3 faults J: ran 3 faults mode conversion is at 66 cm sawteeth period is longer than during D-port dithering Summary The run was successful in that mode conversion electron heating was readily obtained. Monitoring the GPC measured electron temperature response, a 3He transition at ~469 nm with the Chromex, and the H/D, we could obtain fairly repeatable deposition profiles. The deposition was peaked at Rmaj~0.66. On shot 010, strong modification of the central channels was observed. We were unsuccessful obtaining a comparable discharge at heating or +90deg for a number of reasons. More experiments will be necessary and these early results strongly motivate developing an RF scenario at ~ 5 T for MCCD. |
| Entered: Jul 7 2004 03:49:34:240PM |
| Author: Steve Wukitch |
| Engineering setup and run plan for Wednesday, July 16, 2003 MP#345 MCCD SL: Wukitch PO: wolfe This run requires 8T operation. All required bus work inspections/re-torques should be performed prior to the run. Bus temperatures need to be monitored between shots. Engineering Setup: overnight ECDC in D2, stopping 1-2 hours prior to the run. Power system as on 1010803010 Except: TF PLC current limit at 175kA (we'll change this as the run proceeds) digitizer start at -1.6sec Acoils as on 1030711040 (+Dtop -Dbot -Jtop +Jbot) and enabled 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 15 psi of He3 Hybrid Enabled (as is) fill C-side with 30 psi of D2 Hybrid enabled The following gate valves should be enabled, assuming no vacuum problems: ECE, VUV, DNB, PCI, Zbolo-shutter RF setup: in RUN ON by 8:00AM ---------------------------------------------------- Run Plan: We will start with a lower single null 800kA discharge as on 1030710010 with target density of nl04=8e19. Raise TF over 6 shots to 8T as follows: Nominal BT hybrid current PLC limit -------- ------------- ---------- 5.4 150 175 6 170 175 6.5 185 190 7 200 205 7.5 215 220 8 230 235 Since we will just be verifying proper TF operation during this sequence, we won't need to repeat shots because of fizzles. While we're doing that we can try adjusting the He3 puff, starting with an 80msec pulse as on 1010803010 (but note that the plenum pressure was only 6psi for that run). Once we're up to 8T, we can scan the He3 puff to optimize the near-axis mode conversion, then vary RF phasing for co and counter current drive. Assuming MSE is seeing an effect, we may need to reserve the final 60 to 90 minutes for calibration shots. *********************************************************************************** Lost the driver bias on FMIT#2. We suspect a problem with its transformer and fan. We will investigate later. 001 BT~5.4, Ip~0.8 MA, nl_04~0.8, SNL D: 0.6 [0.7,1.3] sec J: 1.2 [0.7,1.3] sec result: plasma D: no gate J: ran one fault next field is 6 T 002 BT~6, Ip~0.8 MA, nl_04~0.8, SNL D: 0.6 [0.7,1.3] sec J: 1.2 [0.7,1.3] sec result: plasma D: ran clean J: ran clean next field is 6.5 T Disconnected the driver bias at the output of the supply and the supply appears fine. 003 BT~6.5, Ip~0.8 MA, nl_04~0.8, SNL D: 0.6 [0.7,1.3] sec J: 1.8 [0.7,1.3] sec result: plasma D: ran multiple faults J: ran two faults next field is 7 T 004 BT~7, Ip~0.8 MA, nl_04~0.8, SNL D: 0. [0.7,1.3] sec J: 0. [0.7,1.3] sec result: plasma next field is 7.6 T 005 BT~7.6, Ip~0.8 MA, nl_04~0.8, SNL D: 0.6 [0.7,1.2] sec J: 1.8 [0.7,1.2] sec result: plasma D: ran faults J: ran faults next field is 8 T fairly strong response in the e- temperature at ~0.75 m 006 BT~8, Ip~0.8 MA, nl_04~0.8, SNL D: 0.6 [0.7,1.2] sec J: 1.8 [0.7,1.2] sec result: plasma - marfe D: ran faults J: ran faults mode conversion is inside q=1 lower He3 puff from 80 msec to 60 msec 007 BT~8, Ip~0.8 MA, nl_04~0.8, SNL D: 1.0 [0.7,1.2] sec J: 2.0 [0.7,1.2] sec phase is [0,pi,pi,0] (digital phase shifter is 140deg) result: plasma D: ran 6 faults J: ran max faults next field is 8.1 T 008 BT~8.1, Ip~0.8 MA, nl_04~0.8, SNL D: 1.0 [0.7,1.2] sec J: 2.0 [0.7,1.2] sec phase is [0,pi,pi,0] (digital phase shifter is 140deg) result: plasma D: ran 4 faults J: ran 3 faults lower target density to 0.6 009 BT~8.1, Ip~0.8 MA, nl_04~0.8, SNL D: 1.0 [0.7,1.2] sec J: 1.2 [0.7,1.2] sec phase is [0,pi,pi,0] (digital phase shifter is 140deg) result: plasma D: ran 4 faults J: ran clean observe two (for 78 and 80.5) mode conversion surfaces sawtooth inversion radius appears to shrink with electron heating next phase is -90deg (digital phase shifter is 30deg) 010 BT~8.0, Ip~0.8 MA, nl_04~0.8, SNL D: 0.9 [0.7,1.2] sec J: 1.5 [0.7,1.2] sec -90deg (dps=30deg) result: plasma D: ran 3 faults J: ran 5 trips sawteeth are modified 011 BT~8.0, Ip~0.8 MA, nl_04~0.8, SNL D: 1.0 [0.7,1.2] sec J: 1.5 [0.7,1.2] sec -90deg (dps=30deg) result: plasma D: ran clean J: ran faults but better towards end of shot sawteeth are modified with J-port 012 BT~8.0, Ip~0.8 MA, nl_04~0.8, SNL D: 1.0 [0.6,1.25] sec J: 1.3 [0.7,1.2] sec -90deg (dps=30deg) result: plasma D: ran 3 faults J: ran clean sawteeth become shorter with J-port 013 BT~8.0, Ip~0.8 MA, nl_04~0.8, SNL D: 1.0 [0.6,1.25] sec J: 1.3 [0.7,1.2] sec +90deg (dps=220deg) result: plasma D: ran 2 faults J: ran 3 faults sawteeth still change with J-port 014 BT~8.0, Ip~0.8 MA, nl_04~0.8, SNL D: 1.0 [0.6,1.25] sec J: 1.3 [0.7,1.2] sec +90deg (dps=220deg) result: plasma D: ran 2 faults J: ran 2 faults change gas puff to 30 msec appears the He3 has creeped upward from Chromex 015 BT~8.0, Ip~0.8 MA, nl_04~0.8, SNL D: 1.0 [0.6,1.25] sec J: 1.3 [0.7,1.2] sec +90deg (dps=220deg) result: plasma D: ran 3 faults J: ran 2 faults He3 is back to 010 but still off axis - H fraction has increased lower puff to 15 msec 016 BT~8.0, Ip~0.8 MA, nl_04~0.8, SNL D: 1.0 [0.6,1.25] sec J: 1.3 [0.7,1.2] sec +90deg (dps=220deg) result: plasma D: ran 3 faults J: ran clean He3 is back to 010 but still off axis - H fraction has increased lower puff to 15 msec nice shot 017 BT~8.0, Ip~0.8 MA, nl_04~0.8, SNL D: 1.0 [0.6,1.25] sec J: 1.3 [0.7,1.2] sec -90deg (dps=30deg) result: plasma D: ran 8 faults J: ran clean mode conversion is at 66 cm nice shot 018 BT~8.0, Ip~0.8 MA, nl_04~0.8, SNL D: 1.0 [0.6,1.25] sec J: 1.3 [0.7,1.2] sec 0deg (dps=140deg) result: plasma D: ran 3 faults J: ran max faults mode conversion is at 66 cm 019 BT~8.0, Ip~0.8 MA, nl_04~0.8, SNL D: 1.0 [0.6,1.25] sec J: 1.3 [0.7,1.2] sec 0deg (dps=140deg) result: plasma D: ran 8 faults J: ran clean mode conversion is at 66 cm good comparison to +/-90deg dithering 020 BT~8.0, Ip~0.8 MA, nl_04~0.8, SNL D: 0.75 [0.6,1.25] sec J: 2.0 [0.7,1.2] sec +90deg (dps=220deg) result: plasma D: ran 4 faults J: ran 2 faults mode conversion is at 66 cm sawteeth period is no different than during D-port dithering 021 BT~8.0, Ip~0.8 MA, nl_04~0.8, SNL D: 0.75 [0.6,1.25] sec J: 2.0 [0.7,1.2] sec -90deg (dps=30deg) result: plasma D: ran 3 faults J: ran 3 faults mode conversion is at 66 cm sawteeth period is longer than during D-port dithering Summary The run was successful in that mode conversion electron heating was readily obtained. Monitoring the GPC measured electron temperature response, a 3He transition at ~469 nm with the Chromex, and the H/D, we could obtain fairly repeatable deposition profiles. The deposition was peaked at Rmaj~0.66. On shot 010, strong modification of the central channels was observed. We were unsuccessful obtaining a comparable discharge at heating or +90deg for a number of reasons. More experiments will be necessary and these early results strongly motivate developing an RF scenario at ~ 5 T for MCCD. |
| Physics Operator Summaries |
| Entered: Jul 7 2004 04:37:18:833PM |
| Author: Steve Wolfe |
| Physop Summary for Wed., 7/16/03 MP#345: MCCD SL: wukitch PO: wolfe EO: Cochran/Dekow/Byford/Parkin CW*: Irby * CW=Chief Worrier Engineering setup and run plan for Wednesday, July 16, 2003 MP#345 MCCD SL: Wukitch PO: wolfe This run requires 8T operation. All required bus work inspections/re-torques should be performed prior to the run. Bus temperatures need to be monitored between shots. Engineering Setup: overnight ECDC in D2, stopping 1-2 hours prior to the run. Power system as on 1010803010 Except: TF PLC current limit at 175kA (we'll change this as the run proceeds) digitizer start at -1.6sec Acoils as on 1030711040 (+Dtop -Dbot -Jtop +Jbot) and enabled 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 15 psi of He3 Hybrid Enabled (as is) fill C-side with 30 psi of D2 Hybrid enabled The following gate valves should be enabled, assuming no vacuum problems: ECE, VUV, DNB, PCI, Zbolo-shutter RF setup: in RUN ON by 8:00AM ---------------------------------------------------- Run Plan: We will start with a lower single null 800kA discharge as on 1030710010 with target density of nl04=8e19. Raise TF over 6 shots to 8T as follows: Nominal BT hybrid current PLC limit TFstart -------- ------------- ---------- ----------- 5.4 150 175 -1.0 6 170 175 -1.1 6.5 185 190 -1.2 7 200 205 -1.3 7.5 215 220 -1.4 8 230 235 -1.5 Since we will just be verifying proper TF operation during this sequence, we won't need to repeat shots because of fizzles. While we're doing that we can try adjusting the He3 puff, starting with an 80msec pulse as on 1010803010 (but note that the plenum pressure was only 6psi for that run). Once we're up to 8T, we can scan the He3 puff to optimize the near-axis mode conversion, then vary RF phasing for co and counter current drive. Assuming MSE is seeing an effect, we may need to reserve the final 60 to 90 minutes for calibration shots. Execution ---------- Prior to the run, modified the engineering setup to put the TF start at -1.0; we'll bring that earlier as we increase the current. TF invert set back to +1.6sec since we aren't using the back porch Also, noted fizzle detector on 1010803 was off at 1.0; moved that to 1.8. From the physop standpoint, everything went as planned. We had 21 shots, 16 at 8.0T or above (one at 8.1T). All plasmas were full length. Startups were robust, and only a few gas tweaks were needed to get rid of runaways. No adjustment was needed to compensate for the increased TF at t=0, which got to -7.07T for the 8.0T shots with TFstart at -1.5sec. The actual PCS waveform to get 8.0T turned out to be 225kA, with a PLC limit of 230. From shot #5 on we moved the TF invert time to 1.2sec (from 1.6) to reduce magnet heating. Also from shot#5 on, we waited a minimum of 20min in recool. Well-localized mode conversion damping was observed on ECE in all phasings. The species mix was varied by decreasing the He3 puff from the initial value of 80ms to 15msec, which seemed to be the appropriate value to move the layer close to the axis. Current drive effects were not so clear. Changes in sawtooth period were observed, but it was not clear that the effects made sense. Shot 16 seemed to indicate a significant increase in period with co-current phasing, but shots 20 and 21, at higher power, seemed to exhibit the opposite effect. The DNB had some problems but MSE did get some data near the center, which hopefully will be suitable for analysis. A vibration was noted in the alternator when the speed dropped to 1520rpm. This was avoided by increasing the initial speed from 1703 to 1718rpm at shot#12. The interphase transformers on the TF ratcheted up to 75C on the outer windings over the course of the day. We do need additional cooling but this temp is well within allowables. The magnet temperature after the pulses showed no ratcheting after we increased the recool time to 20min. On the last shot (#21) we blew a fuse in one of the TF cabinets; the PLC showed a "1 SCR not conducting" fault, but the shot ran through normally. Since it was already after five o'clock, we did not take the planned MSE calibration shot at the end of the day. If possible, we'll try to get it in at the end of the run tomorrow. Scorecard --------- Tests 0 Duds 0 Fizzles 0 Plasmas 21 ====== == shots 21 |
| Session Leader Comments | |||
| Jul 16 2003 09:51:38:000AM | 1030716001 | Steve Wukitch | 001 BT~5.4, Ip~0.8 MA, nl_04~0.8, SNL D: 0.6 [0.7,1.3] sec J: 1.2 [0.7,1.3] sec result: plasma D: no gate J: ran one fault next field is 6 T |
| Jul 16 2003 09:55:10:507AM | 1030716001 | Steve Wukitch | 001 BT~5.4, Ip~0.8 MA, nl_04~0.8, SNL D: 0.6 [0.7,1.3] sec J: 1.2 [0.7,1.3] sec result: plasma D: no gate J: ran one fault next field is 6 T |
| Jul 16 2003 09:55:23:973AM | 1030716002 | Steve Wukitch | 002 BT~6, Ip~0.8 MA, nl_04~0.8, SNL D: 0.6 [0.7,1.3] sec J: 1.2 [0.7,1.3] sec result: plasma D: ran clean J: ran clean next field is 6.5 T |
| Jul 16 2003 09:56:07:180AM | 1030716003 | Steve Wukitch | 003 BT~6.5, Ip~0.8 MA, nl_04~0.8, SNL D: 0.6 [0.7,1.3] sec J: 1.2 [0.7,1.3] sec result: plasma D: ran multiple faults J: ran two faults next field is 7 T |
| Jul 16 2003 10:12:28:440AM | 1030716004 | Steve Wukitch | 004 BT~7, Ip~0.8 MA, nl_04~0.8, SNL D: 0. [0.7,1.3] sec J: 0. [0.7,1.3] sec result: plasma next field is 7.6 T |
| Jul 16 2003 10:53:26:500AM | 1030716005 | Steve Wukitch | 005 BT~7.6, Ip~0.8 MA, nl_04~0.8, SNL D: 0.6 [0.7,1.2] sec J: 1.8 [0.7,1.2] sec result: plasma D: ran faults J: ran faults fairly strong response in the e- temperature at ~0.75 m next field is 8 T |
| Jul 16 2003 12:27:42:570PM | 1030716008 | Steve Wukitch | 008 BT~8.1, Ip~0.8 MA, nl_04~0.8, SNL D: 1.0 [0.7,1.2] sec J: 2.0 [0.7,1.2] sec phase is [0,pi,pi,0] (digital phase shifter is 140deg) result: plasma D: ran 4 faults J: ran 3 faults next field is 8.0T |
| Jul 16 2003 12:27:56:897PM | 1030716009 | Steve Wukitch | 009 BT~8.1, Ip~0.8 MA, nl_04~0.8, SNL D: 1.0 [0.7,1.2] sec J: 2.0 [0.7,1.2] sec phase is [0,pi,pi,0] (digital phase shifter is 140deg) result: plasma D: ran 4 faults J: ran clean observe two (for 78 and 80.5) mode conversion surfaces next phase is -90deg (digital phase shifter is 30deg) |
| Jul 16 2003 01:01:00:743PM | 1030716010 | Steve Wukitch | 010 BT~8.0, Ip~0.8 MA, nl_04~0.8, SNL D: 0.9 [0.7,1.2] sec J: 1.5 [0.7,1.2] sec -90deg (dps=30deg) result: plasma D: ran 3 faults J: ran 5 trips sawteeth are modified |
| Jul 16 2003 01:01:33:197PM | 1030716011 | Steve Wukitch | 011 BT~8.0, Ip~0.8 MA, nl_04~0.8, SNL D: 1.0 [0.7,1.2] sec J: 1.5 [0.7,1.2] sec -90deg (dps=30deg) result: plasma D: ran clean J: ran faults but better towards end of shot sawteeth are modified with J-port |
| Jul 16 2003 01:40:32:023PM | 1030716012 | Steve Wukitch | 012 BT~8.0, Ip~0.8 MA, nl_04~0.8, SNL D: 1.0 [0.6,1.25] sec J: 1.3 [0.7,1.2] sec -90deg (dps=30deg) result: plasma D: ran 3 faults J: ran clean sawteeth become shorter with J-port |
| Jul 16 2003 02:20:12:570PM | 1030716013 | Steve Wukitch | 013 BT~8.0, Ip~0.8 MA, nl_04~0.8, SNL D: 1.0 [0.6,1.25] sec J: 1.3 [0.7,1.2] sec +90deg (dps=220deg) result: plasma D: ran 2 faults J: ran 3 faults |
| Jul 16 2003 02:20:43:943PM | 1030716014 | Steve Wukitch | 014 BT~8.0, Ip~0.8 MA, nl_04~0.8, SNL D: 1.0 [0.6,1.25] sec J: 1.3 [0.7,1.2] sec +90deg (dps=220deg) result: plasma D: ran 2 faults J: ran 2 faults |
| Jul 16 2003 02:43:25:823PM | 1030716015 | Steve Wukitch | 015 BT~8.0, Ip~0.8 MA, nl_04~0.8, SNL D: 1.0 [0.6,1.25] sec J: 1.3 [0.7,1.2] sec +90deg (dps=220deg) result: plasma D: ran 3 faults J: ran 2 faults He3 is back to 010 but still off axis - H fraction has increased lower puff to 15 msec |
| Jul 16 2003 04:11:48:117PM | 1030716016 | Steve Wukitch | 016 BT~8.0, Ip~0.8 MA, nl_04~0.8, SNL D: 1.0 [0.6,1.25] sec J: 1.3 [0.7,1.2] sec +90deg (dps=220deg) result: plasma D: ran 3 faults J: ran clean He3 is back to 010 but still off axis - H fraction has increased lower puff to 15 msec nice shot |
| Jul 16 2003 04:12:01:553PM | 1030716017 | Steve Wukitch | 017 BT~8.0, Ip~0.8 MA, nl_04~0.8, SNL D: 1.0 [0.6,1.25] sec J: 1.3 [0.7,1.2] sec -90deg (dps=30deg) result: plasma D: ran 8 faults J: ran clean mode conversion is at 66 cm nice shot |
| Jul 16 2003 04:12:14:757PM | 1030716018 | Steve Wukitch | 018 BT~8.0, Ip~0.8 MA, nl_04~0.8, SNL D: 1.0 [0.6,1.25] sec J: 1.3 [0.7,1.2] sec 0deg (dps=140deg) result: plasma D: ran 3 faults J: ran max faults mode conversion is at 66 cm |
| Jul 16 2003 04:27:06:810PM | 1030716019 | Steve Wukitch | 019 BT~8.0, Ip~0.8 MA, nl_04~0.8, SNL D: 1.0 [0.6,1.25] sec J: 1.3 [0.7,1.2] sec 0deg (dps=140deg) result: plasma D: ran 8 faults J: ran clean mode conversion is at 66 cm good comparison to +/-90deg |
| Physics Operator Comments | |||
| Jul 15 2003 05:31:08:680PM | Steve Wolfe | Begin PCS setup for 1030716 run Startup from 1030715033 Seg2 from 1030710010 (change title) Do a build, get two factor ack messages and a wirename warning. Touch the wire and rebuild. Save as /home/wolfe/pcs_trees/pcs_1030716999 | |
| Jul 16 2003 08:05:40:500AM | Steve Wolfe | Loaded from previously prepared (and mis-named) /home/wolfe/pcs_trees/pcs_1030717999 replace pg2 (He3 in bside-upper) waveform as on 1010803010 : 80msec at .3sec copy a pg3 waveform from seg3 (seg2 was basically zero pre-program) load/clean Load at 16-Jul-2003 08:05:28.00 Open tree /home/wolfe/pcs_scratch -1 Open tree done | |
| Jul 16 2003 09:18:42:537AM | 1030716001 | Steve Wolfe | shot#1: setup for standard 5.4T 800kA SNL shot, w/80msec He3 puff E-port will not be operational today - crowbar ready problem plasma, full length. next shot:Tf to 170kA, start at -1.1sec |
| Jul 16 2003 09:34:48:020AM | 1030716002 | Steve Wolfe | shot#2:Tf to 170kA (6T) in seg1 and 2, start at -1.1sec pg4 from 23 to 25msec plasma full length. 6.1T, bad bounce on startup. next shot: TF to 6.5T, 185ka (PLC to 190) start at -1.2sec pg4 up again. |
| Jul 16 2003 09:50:12:123AM | 1030716003 | Steve Wolfe | shot#3: TF to 6.5T, 185ka (PLC to 190) start at -1.2sec pg4 to 28msec plasma full length, startup looks good. next shot: tf to 7.1T (200kA) PLC to 205, start at -1.3sec |
| Jul 16 2003 10:07:53:570AM | 1030716004 | Steve Wolfe | shot#4: tf to 7.1T (200kA) PLC to 205, start at -1.3sec RF off for this shot, avoid resonance in antenna boxes plasma, full length 7.1T (6.6@t=0) next shot: 7.6T (215ka) 220 on PLC, TF start at -1.4s |
| Jul 16 2003 10:08:59:060AM | 1030716004 | Steve Wolfe | shot#4: tf to 7.1T (200kA) PLC to 205, start at -1.3sec RF off for this shot, avoid resonance in antenna boxes plasma, full length 7.1T (6.6@t=0) next shot: 7.6T (215ka) 220 on PLC, TF start at -1.4s |
| Jul 16 2003 10:33:48:410AM | 1030716005 | Steve Wolfe | shot#5: tf to 7.6T (215ka) 220 on PLC, TF start at -1.4s rf back on. Now waiting 20 minutes in recool. Move tf invert to +1.2sec for now to reduce heating; will move it out once we start doing physics. plasma full length, 7.65T reaches flattop at ~.6sec RF not too happy. next shot:8.0T (225kA) PLC to 230 tstart=-1.5sec |
| Jul 16 2003 11:02:41:487AM | 1030716006 | Steve Wolfe | shot#6: tf to 8.0T (225kA) PLC to 230 tstart=-1.5sec 7.99T plasma full length but marfed early. flattop at ~.62sec TCI feedback went nuts. TS says density got to 6e20 Steve says on-axis heating based on ece. next shot: drop He3 puff from 80 to 60msec also drop pg4 by 2msec |
| Jul 16 2003 11:30:15:183AM | 1030716007 | Steve Wolfe | shot#7: drop He3 puff from 80 to 60msec also drop pg4 by 2msec to 26msec plasma full length, current rise still a little slow. No marfe this time RF still not staying on. next shot: drop pg4 to 24msec slow down density rise Go to 8.1T (228kA) PLC to 235 |
| Jul 16 2003 11:48:09:773AM | 1030716008 | Steve Wolfe | shot#8: drop pg4 to 24msec slow down density rise Go to 8.1T (228kA) PLC to 235 8.1T plasma full length; startup was faster this time. next shot: drop nl4 to 6e19 |
| Jul 16 2003 12:16:33:490PM | 1030716009 | Steve Wolfe | shot#9: drop nl4 to 6e19, lower pg3 in seg2 Drop tf back to 8.0T, 225kA, PLC to 230 8.0 T plasma full length; bad bounce on startup, some hards. next shot: raise pg4 back to 28msec Wukie is going to start changing phase |
| Jul 16 2003 12:36:11:143PM | 1030716010 | Steve Wolfe | shot#10: raise pg4 back to 28msec Wukie is going to start changing phase plasma full length, startup ok next shot: no changes, RF still tweaking |
| Jul 16 2003 12:58:44:710PM | 1030716011 | Steve Wolfe | shot#11: no changes, RF still tweaking plasma full length, startup ok. next shot: no change |
| Jul 16 2003 01:18:18:803PM | 1030716012 | Steve Wolfe | shot#12: no changes, RF still tweaking plasma full length, startup ok, rf moer or less clean. next shot: change the phase |
| Jul 16 2003 01:50:30:413PM | 1030716013 | Steve Wolfe | shot#13: no pcs changes; rf will change the phase engineers have raised the alternator speed to 1718 to try to avoid a vibration near the minimum speed on these pulses. plasma full lenth, startup ok. sawtooth effect looks the same to me. next shot: no changes |
| Jul 16 2003 02:08:54:927PM | 1030716014 | Steve Wolfe | shot#14: no pcs changes plasma full length, startup ok sawteeth are still smaller with J on. next shot: drop pg2 from 60ms to 30ms |
| Jul 16 2003 02:33:28:933PM | 1030716015 | Steve Wolfe | shot#15: drop pg2 He3 from 60ms to 30ms plasma full length, startup ok. still small sawteeth during J pulses next shot:pg2 to 15msec |
| Jul 16 2003 02:55:23:560PM | 1030716016 | Steve Wolfe | shot#16:pg2 He3 to 15msec plasma full length, startup ok some longer sawteeth. next shot: change the phase again |
| Jul 16 2003 03:15:59:780PM | 1030716017 | Steve Wolfe | shot#17: change the phase again plasma full length, startup ok, moves back in a little bit sawteeth look smaller. Maybe a result. next shot: no changes, rf to 0-pi-pi-0 |
| Jul 16 2003 03:41:28:287PM | 1030716018 | Steve Wolfe | shot#18: no changes, rf to 0-pi-pi-0 plasma full length, startup ok sawteeth are short, but J was mostly faulting. next shot: repeat |
| Jul 16 2003 04:03:51:650PM | 1030716019 | Steve Wolfe | shot#19: repeat rf at 0-pi-pi-0 plasma full length, startup ok rf looks good. next shot: raise the rf power in current drive phase |
| Jul 16 2003 04:32:22:740PM | 1030716020 | Steve Wolfe | shot#20: raise the rf power in current drive phase plasma full length, startup ok; J at 2MW short sawteeth, not what we were expecting. next shot: change phase to counter, same power |
| Jul 16 2003 04:51:34:397PM | 1030716021 | Steve Wolfe | shot#21: change phase to counter, same power plasma full length. startup ok sawteeth are longer than previous shot. There was a TF supply fault on the plc (1 scr not conducting) next shot: if there is one, will be a TF +EF4 +EF3 for MSE cal. |
| Jul 16 2003 05:05:18:447PM | 1030716021 | Steve Wolfe | shot#22: TF +EF4 +EF3 for MSE cal. import seg1 from 1030521014, copy tf from seg2, turn off seg2 tf, ef4, ef3 enabled; all others off f.d on at 1sec off at 1.1sec btop gas enabled, all others disabled. fuse was blown in tf suppply, and it's after five, so we won't take this shot. It's loaded in PCS and we can take it tomorrow if there's time. |
| Engineering Operator Comments | ||||
| Shot | Time | Type | Status | Comment |
| 1 | 09:14:24:043AM | Plasma | Ok | |
| 2 | 09:29:27:067AM | Plasma | Ok | |
| 3 | 09:46:08:960AM | Plasma | Ok | |
| 4 | 10:04:22:300AM | Plasma | Ok | |
| 5 | 10:27:20:900AM | Plasma | Ok | |
| 6 | 10:53:28:830AM | Plasma | Ok | |
| 7 | 11:17:35:820AM | Plasma | Ok | |
| 8 | 11:41:17:920AM | Plasma | Ok | |
| 9 | 12:04:05:140PM | Plasma | Ok | |
| 10 | 12:28:04:333PM | Plasma | Ok | |
| 11 | 12:50:49:370PM | Plasma | Ok | |
| 12 | 01:14:09:733PM | Plasma | Ok | |
| 13 | 01:37:12:160PM | Plasma | Ok | |
| 14 | 02:00:45:977PM | Plasma | Ok | |
| 15 | 02:24:29:310PM | Plasma | Ok | |
| 16 | 02:48:02:910PM | Plasma | Ok | |
| 17 | 03:11:22:943PM | Plasma | Ok | |
| 18 | 03:35:21:247PM | Plasma | Ok | |
| 19 | 03:59:06:003PM | Plasma | Ok | |
| 20 | 04:21:55:520PM | Plasma | Ok | |
| 21 | 04:45:37:543PM | Plasma | Ok | Shot OK, 1 SCR not cond in Aux cab |