| Miniproposals | ||||||||||
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| Operators | |
| Session leader(s): | Earl Marmar |
| Physics operator(s): | Earl Marmar |
| Engineering operator(s): | Gary Dekow |
| Engineering Operator Run Comment |
| MP 307 High Bootstrap Fraction ITBs; SL R. Parker; PO E. Marmar; EO: G. |
| Session Leader Plans |
| Physics Operators Plans |
| Session Leader Summaries |
| Physics Operator Summaries |
| Entered: Jul 7 2004 04:37:15:880PM |
| Author: To Be Determined |
| Engineering Setup for 1020821 MP 307 High Bootstrap Fraction ITBs SL R. Parker PO E. Marmar EO G. Dekow Power Systems as on 1020820002 Plasmas to begin at 9:00 AM ECDC overnight at 2e-4 T D2; stop at 7:00 am Gas setup: B-Top 6 psi D2 Hybrid Enabled (PG4) B-side lower 1 psi Ar Hybrid Enabled (PG1) B-side upper 10 psi D2 Hybrid DISABLED (PG2, for ECDC) C-Side 30 psi D2 Hybrid Enabled (PG3) J-Bottom as is, Hybrid DISABLED Gate valves ECE,VUV,DNB RF Setup: Transmitters #2,3,4 in run-on by 7:00 Run Plan: Assuming E-port is available, start at 4.5 Tesla, 0.8 MA; high-field side off-axis, 1.5 MW or more if possible If ITB formation, use J-port (~0.5 MW) on-axis to stabilize Scan current down to as low a value as possible while maintaining ITB Results: After the first plasma (shot 3), a problem with an alternator drive motor contactor caused the run to end. There was no progress made on the MP. Shot 3 was an L-mode at 4.5 Tesla, with intermittent power from E-port. Scorecard: Plasmas 1 Fizzles 1 Duds 1 Cycles 3 ----------------------------------------------------------------------------- 1020821xxx marmar PHYSICS_OPERATOR Aug 21 2002 8:49:18:680AM . . . . . . . . . . . . . . . . . . . . Hybrid coldstart No errors; all matrices respond ----------------------------------------------------------------------------- 1020821001 marmar PHYSICS_OPERATOR Aug 21 2002 9:12:46:090AM . . . . . . . . . . . . . . . . . . . . Load from 1020820003 Increase nl_04 target to 1e20 from 8e19 start at 5.4 Tesla for 1 shot dud; RF was conditioning just before the run; fill pressure on the low side ECDC for 10 minutes before next shot ----------------------------------------------------------------------------- 1020821002 marmar PHYSICS_OPERATOR Aug 21 2002 9:38:56:050AM . . . . . . . . . . . . . . . . . . . . 10 minutes ECDC before shot TF to -127 kA at 0.5 seconds (4.5 Tesla) fizzle; fill is higher (0.065 mTorr vs .045 from shot 1) B_z looks a bit high at 10 msec ----------------------------------------------------------------------------- 1020821003 marmar PHYSICS_OPERATOR Aug 21 2002 9:55:02:513AM . . . . . . . . . . . . . . . . . . . . no PCS changes plasma E was on and off; no H-mode ----------------------------------------------------------------------------- 1020821003 marmar PHYSICS_OPERATOR Aug 21 2002 11:19:21:836AM . . . . . . . . . . . . . . . . . . . . After shot 3, a problem with a contactor for the alternator drive motor caused an early end to the run. |
| Session Leader Comments |
| Physics Operator Comments | |||
| Aug 21 2002 08:48:30:070AM | Earl Marmar | Engineering Setup for 1020821 MP 307 High Bootstrap Fraction ITBs SL R. Parker PO E. Marmar EO G. Dekow Power Systems as on 1020820002 Plasmas to begin at 9:00 AM ECDC overnight at 2e-4 T D2; stop at 7:00 am Gas setup: B-Top 6 psi D2 Hybrid Enabled (PG4) B-side lower 1 psi Ar Hybrid Enabled (PG1) B-side upper 10 psi D2 Hybrid DISABLED (PG2, for ECDC) C-Side 30 psi D2 Hybrid Enabled (PG3) J-Bottom as is, Hybrid DISABLED Gate valves ECE,VUV,DNB RF Setup: Transmitters #2,3,4 in run-on by 7:00 Run Plan: Assuming E-port is available, start at 4.5 Tesla, 0.8 MA; high-field side off-axis, 1.5 MW or more if possible If ITB formation, use J-port (~0.5 MW) on-axis to stabilize Scan current down to as low a value as possible while maintaining ITB | |
| Aug 21 2002 08:49:18:680AM | Earl Marmar | Hybrid coldstart No errors; all matrices respond | |
| Aug 21 2002 09:12:46:090AM | 1020821001 | Earl Marmar | Load from 1020820003 Increase nl_04 target to 1e20 from 8e19 start at 5.4 Tesla for 1 shot dud; RF was conditioning just before the run; fill pressure on the low side ECDC for 10 minutes before next shot |
| Aug 21 2002 09:38:56:050AM | 1020821002 | Earl Marmar | 10 minutes ECDC before shot TF to -127 kA at 0.5 seconds (4.5 Tesla) fizzle; fill is higher (0.065 mTorr vs .045 from shot 1) B_z looks a bit high at 10 msec |
| Aug 21 2002 09:55:02:513AM | 1020821003 | Earl Marmar | no PCS changes plasma E was on and off; no H-mode |
| Aug 21 2002 11:19:21:837AM | 1020821003 | Earl Marmar | After shot 3, a problem with a contactor for the alternator drive motor caused an early end to the run. |
| Engineering Operator Comments | ||||
| Shot | Time | Type | Status | Comment |
| 1 | 09:00:58:207AM | Plasma | Ok | |
| 2 | 09:29:33:290AM | Plasma | Ok | |
| 3 | 09:42:22:943AM | Plasma | Ok | |