| Miniproposals | ||||||||||||
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| Operators | |
| Session leader(s): | Yijun Lin,Steve Wukitch |
| Physics operator(s): | Bill Rowan |
| Engineering operator(s): | Unknown |
| Engineering Operator Run Comment |
| RFD Conditioning and Machine Cleanup. Wukitch/Lin |
| Session Leader Plans |
| Physics Operators Plans |
| Session Leader Summaries |
| Entered: Jul 7 2004 03:49:30:460PM |
| Author: To Be Determined |
| Run Plan and Engineering Setup for Thurs. 9/12/2002 RF Conditioning and Machine Cleanup SL: Wukitch/Lin PO: Rowan Engineering Setup Power Systems as on 1020911017 Overnight ECDC in D2 at 2e-4 torr Run to begin at 9:00 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 Enable the following gate valves, assuming no vacuum problems: ECE,VUV,DNB RF Setup: Transmitters #1,2,3,4 in run-on by 7:00 Run Plan: Begin with a "standard" 5.3T, 1MA SN target shot, e.g. 1020911017 Do RF conditioning and monitor ohmic performance, H/D, Prad to assess clean-up 006: Plasma request: 5.4 T, 1.0 MA, ne 0.8e20, SN RF request: D: 1.5 MW, [1, 1.25] sec E: 1.5 MW, [1.25, 1.5] sec J: 1.4 MW, [0.6, 1.0] sec Result: plasma.Late H-mode when E on D: ran fine E: ran fine J: ran fine Next: Swap the order of D and E to see if we can get H-mode with D. 010 lower SN, BT~5.4 T,nl04~0.8, Ip~1 MA D: 1.4 MW [1.0,1.3] sec E: 1.4 MW [1.2,1.5] sec J: 1.8 MW [0.5,1.0] sec result: plasma - two little H-modes D: 1.4 MW faults on overlap E: 1.4 MW clean J: 1.7 MW 4 faults 012 lower SN, BT~5.4 T,nl04~0.8, Ip~1 MA D: 1.6 MW [1.0,1.25] sec and ramp @1.4 E: 1.6 MW [1.25,1.4] sec and ramp @1.4 J: 2.0 MW [0.5,1.0] sec result: plasma - two little H-modes D: 1.4 MW one fault E: 1.4 MW clean J: 2.0 MW max faults overlap actually worked for a brief time 015 lower SN, BT~5.4 T,nl04~0.8, Ip~1 MA D: 1.6 MW [1.0,1.25] sec and ramp @1.4 E: 1.6 MW [1.25,1.4] sec and ramp @1.4 J: 2.0 MW [0.5,1.0] sec result: plasma - two little H-modes D: 1.4 MW one fault E: 1.4 MW one fault J: 2.0 MW max faults 019 lower SN, BT~5.15 T,nl04~0.8, Ip~1 MA D: 1.6 MW [1.0,1.25] sec and ramp @1.4 E: 1.6 MW [1.25,1.4] sec and ramp @1.4 J: 2.0 MW [0.5,1.0] sec result: plasma D: 1.4 MW one fault E: 1.4 MW one fault J: 2.0 MW max faults near axis mode conversion at 70 MHz 022 lower SN, BT~5.7 T,nl04~0.8, Ip~1 MA D: 1.5 MW [1.0,1.25] sec and ramp @1.4 E: 1.5 MW [1.25,1.4] sec and ramp @1.4 result: plasma D: mistuned E: 1.5 MW no evidence of central mode conversion 023 lower SN, BT~5.8 T,nl04~0.8, Ip~1 MA D: 1.5 MW [1.0,1.25] sec and ramp @1.4 E: 1.5 MW [1.25,1.4] sec and ramp @1.4 result: plasma D: 1.5 MW mistuned E: faulted mode conversion appears a bit off axis 025 lower SN, BT~5.9 T,nl04~0.8, Ip~1 MA D: 1.5 MW [1.0,1.25] sec and ramp @1.4 E: 1.5 MW [1.25,1.4] sec and ramp @1.4 result: plasma - lost control of density D: 1.1 MW mistuned E: 1.4 MW faulted as requested good central D(H) mode conversion Summary: Although plasmas were few, central mode conversion heating was observed with all antennas. For J-port, the field required was 5.15 T (019) and D and E-port required 5.9 T (025). Off-axis mode conversion heating appears to require more power for reasonable signal to noise on the modulation. |
| Physics Operator Summaries |
| Entered: Jul 7 2004 04:37:16:113PM |
| Author: To Be Determined |
| Physop Summary for 1020912 Engineering Setup and Run Plan--------------------------------------------- Run Plan and Engineering Setup for Thurs. 9/12/2002 RF Conditioning and Machine Cleanup SL: Wukitch/Lin PO: Rowan Engineering Setup Power Systems as on 1020911017 Overnight ECDC in D2 at 2e-4 torr Run to begin at 9:00 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 Enable the following gate valves, assuming no vacuum problems: ECE,VUV,DNB RF Setup: Transmitters #1,2,3,4 in run-on by 7:00 Run Plan: Begin with a "standard" 5.3T, 1MA SN target shot, e.g. 1020911017 Do RF conditioning and monitor ohmic performance, H/D, Prad to assess clean-up Summary----------------------------------------------------------------- There was a vacuum leak at the start of the day. It was associated with the ratiomatic. A gate valve was closed but the high pressure side of the valve was exposed to atmosphere. The leak was stopped by pumping on the high pressure side of the valve. The run was further delayed by RF camac problems. The reference shot for this run was 1020911017. The were a number of duds and fizzles probably due to the leak at the beginning of the day. BR_0, BZ_0, and the prefill were changed throughout the day. Plasmas seemed to be produced independently of these changes. On shot 019, the sparker voltage was increased from setpoint 8.0 to 8.75 On shot 025, the sparker was moved earlier by 100 ms. The run ended with blown explosive fuses on the output of the alternator. Scorecard-------------------------------------------------------------- Plasmas 8 Fizzles 8 Duds 9 Engineering 2 Total 27 Shotlog---------------------------------------------------------------- Started pcs Loaded shot 1020911017 Did a coldstart 12-SEP-2002 08:39:26.16 *************** END COLDSTART ****************** Delay to look for a vacuum leak. Leak repaired. It was associated with the ratiomatic. Pumping behind a closed gate valve solved the problem. Delay to repair RF camac May have been a LEMO T. At least removal made things better 001. Fizzle Small change in BZ for the next shot. ICEF4 from -1310 to -1300 002. Dud Changed the BR by moving it down 0.5 mT 003. Dud. Try 10 minutes of ecdc between shots 004. Dud ECDC after this shot again. For the next shot. increased the gas puff from 20 ms to 22 ms Lowered BZ. IC_EFF4U from -1300 to -1315 Raised BR_0 by 0.5 mT 005. Dud Further reduction in BZ. IC_EF4 from -1315 to -1325 Increase the gas puff from 22 ms to 29 ms 006. Plasma No changes for the next shot. 007. Fizzle Late breakdown. 12 ms. For the next shot, add 3 ms to the gas . So the change is from 29 to 32 ms 008. Fizzle Breakdown was improved on this shot. For the next shot, add another 3 ms to the gas. So, 35 ms pulse 009. Dud. For the next shot, reduce the gas puff. Back to 29 ms 010. Plasma No changes for the next shot 011. Fizzle. No changes for the next shot. 012. Plasma. For the next shot, reduce the gas pulse by 2 ms. Pre puff will be 27 ms. 013. Dud. For the next shot, return the gas to 30 ms. Reduce BZ. IC_EF4 changed from -1325 to -1330 014. Fizzle Increase BZ. IC_EF4 changed from -1330 to -1315 015. Plasma Changed the TF for SL. Reduced it to 5.1 T. -144700A Changed the ar gas feed by increasing it by 10 ms. 016. Dud For the next shot, no changes. 017. Fizzle. For the next shot, no changes 018. Dud For the next shot, raise the sparker voltge. Increased it from 8.0 to 8.75 Also, 019. Plasma Next shot. Changed the TF to 5.8 T 020. Dud Next shot. No changes. 021. Fizzle. Next shot. Reduced BR_0 by 0.3 mT 022. Plasma Next shot. Increased the TF. Current will be 165500A. Expect this to be 5.8 T 023. Plasma. Next shot. No changes 024. Fizzle Next shot. Increased the TF. Requested current is 168304. Expect this to produce approx 5.9 T. Moved the sparker earlier by 100 ms. 025. Plasma. Density feedback problem TF is approximately 5.9 T 026. No power shot. 027. Engineering problem. |
| Session Leader Comments | |||
| Sep 12 2002 11:45:34:130AM | 1020912006 | Yijun Lin | shot 6: Plasma request: 5.4 T, 1.0 MA, ne 0.8e20, SN RF request: D: 1.5 MW, [1, 1.25] sec E: 1.5 MW, [1.25, 1.5] sec J: 1.4 MW, [0.6, 1.0] sec Result: plasma.Late H-mode when E on D: ran fine E: ran fine J: ran fine Next: Swap the order of D and E to see if we can get H-mode with D. |
| Sep 12 2002 12:01:22:687PM | 1020912008 | Yijun Lin | fizzle |
| Physics Operator Comments | |||
| Sep 12 2002 08:49:02:620AM | Bill Rowan | Run Plan and Engineering Setup for Thurs. 9/12/2002 RF Conditioning and Machine Cleanup SL: Wukitch/Lin PO: Rowan Engineering Setup Power Systems as on 1020911017 Overnight ECDC in D2 at 2e-4 torr Run to begin at 9:00 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 Enable the following gate valves, assuming no vacuum problems: ECE,VUV,DNB RF Setup: Transmitters #1,2,3,4 in run-on by 7:00 Run Plan: Begin with a "standard" 5.3T, 1MA SN target shot, e.g. 1020911017 Do RF conditioning and monitor ohmic performance, H/D, Prad to assess clean-up Started pcs Loaded shot 1020911017 Did a coldstart 12-SEP-2002 08:39:26.16 *************** END COLDSTART ****************** | |
| Sep 12 2002 09:16:58:173AM | Bill Rowan | Delay to look for a vacuum leak. | |
| Sep 12 2002 09:25:28:960AM | Bill Rowan | Leak repaired. It was associated with the ratiomatic. Pumping behind a closed gate valve solved the problem. | |
| Sep 12 2002 09:36:02:160AM | Bill Rowan | Delay to repair RF camac | |
| Sep 12 2002 09:50:20:450AM | Bill Rowan | May have been a LEMO T. At least removal made things better | |
| Sep 12 2002 11:15:13:800AM | 1020912001 | Bill Rowan | 001. Dud Small change in BZ for the next shot. ICEF4 from -1310 to -1300 |
| Sep 12 2002 11:15:36:597AM | 1020912002 | Bill Rowan | 002. Fizzle Changed the BR by moving it down 0.5 mT |
| Sep 12 2002 11:12:53:597AM | 1020912003 | Bill Rowan | 003. Dud. Try 10 minutes of ecdc between shots |
| Sep 12 2002 11:05:53:710AM | 1020912004 | Bill Rowan | 004. Dud ECDC after this shot again. For the next shot. increased the gas puff from 20 ms to 22 ms Lowered BZ. IC_EFF4U from -1300 to -1315 Raised BR_0 by 0.5 mT |
| Sep 12 2002 11:26:38:810AM | 1020912005 | Bill Rowan | 005. Dud Further reduction in BZ. IC_EF4 from -1315 to -1325 Increase the gas puff from 22 ms to 29 ms |
| Sep 12 2002 11:42:30:490AM | 1020912006 | Bill Rowan | 006. Plasma No changes for the next shot. |
| Sep 12 2002 11:57:28:110AM | 1020912007 | Bill Rowan | 007. Fizzle Late breakdown. 12 ms. For the next shot, add 3 ms to the gas . So the change is from 29 to 32 ms |
| Sep 12 2002 12:10:29:590PM | 1020912008 | Bill Rowan | 008. Fizzle Breakdown was improved on this shot. For the next shot, add another 3 ms to the gas. So, 35 ms pulse |
| Sep 12 2002 12:22:29:600PM | 1020912009 | Bill Rowan | 009. Dud. For the next shot, reduce the gas puff. Back to 29 ms |
| Sep 12 2002 12:35:39:627PM | 1020912010 | Bill Rowan | 010. Plasma No changes for the next shot |
| Sep 12 2002 12:50:46:323PM | 1020912011 | Bill Rowan | 011. Fizzle. No changes for the next shot. |
| Sep 12 2002 01:00:17:820PM | 1020912012 | Bill Rowan | 012. Plasma. For the next shot, reduce the gas pulse by 2 ms. Pre puff will be 27 ms. |
| Sep 12 2002 01:17:50:580PM | 1020912013 | Bill Rowan | 013. Dud. For the next shot, return the gas to 30 ms. Reduce BZ. IC_EF4 changed from -1325 to -1330 |
| Sep 12 2002 01:28:05:793PM | 1020912014 | Bill Rowan | 014. Fizzle Increase BZ. IC_EF4 changed from -1330 to -1315 |
| Sep 12 2002 02:10:15:747PM | 1020912015 | Bill Rowan | 015. Plasma Changed the TF for SL. Reduced it to 5.1 T. -144700A Changed the ar gas feed by increasing it by 10 ms. |
| Sep 12 2002 01:52:59:847PM | 1020912016 | Bill Rowan | 015. Plasma Changed the TF for SL. Reduced it to 5.1 T. -144700A Changed the ar gas feed by increasing it by 10 ms. |
| Sep 12 2002 02:05:46:890PM | 1020912016 | Bill Rowan | 016. Dud For the next shot, no changes. |
| Sep 12 2002 02:17:27:870PM | 1020912017 | Bill Rowan | 017. Fizzle. For the next shot, no changes |
| Sep 12 2002 02:28:04:240PM | 1020912018 | Bill Rowan | 018. Dud For the next shot, raise the sparker voltge. Increased it from 8.0 to 8.75 |
| Sep 12 2002 02:56:27:747PM | 1020912019 | Bill Rowan | 019. Plasma Next shot. Increased the magnetic field to 5.8 T |
| Sep 12 2002 03:10:12:287PM | 1020912020 | Bill Rowan | 020. Dud Next shot. No changes. |
| Sep 12 2002 03:18:12:987PM | 1020912021 | Bill Rowan | 021. Fizzle. Next shot. Reduced BR_0 by 0.3 mT |
| Sep 12 2002 03:42:56:977PM | 1020912022 | Bill Rowan | 022. Plasma Next shot. Increased the TF. Current will be 165500A. Expect this to be 5.8 T |
| Sep 12 2002 04:07:41:547PM | 1020912023 | Bill Rowan | 023. Plasma. Next shot. No changes |
| Sep 12 2002 04:14:14:200PM | 1020912024 | Bill Rowan | 024. Fizzle Next shot. Increase the TF. TF current request is 168304. Expect this to produce 5.9 T |
| Sep 17 2002 10:05:10:833AM | 1020912025 | Bill Rowan | 025. Plasma. For this shot, the sparker was moved 100 ms earlier. Density feedback problem TF is approximately 5.9 T |
| Sep 12 2002 04:39:03:330PM | 1020912026 | Bill Rowan | 026. No power shot. |
| Sep 12 2002 04:52:33:217PM | 1020912027 | Bill Rowan | 027. Engineering problem. |
| Engineering Operator Comments | ||||
| Shot | Time | Type | Status | Comment |
| 1 | 10:04:10:490AM | Plasma | Ok | |
| 2 | 10:18:04:847AM | Plasma | Ok | |
| 3 | 10:32:14:327AM | Plasma | Ok | |
| 4 | 10:53:04:900AM | Plasma | Ok | |
| 5 | 11:17:35:547AM | Plasma | Ok | |
| 6 | 11:31:44:887AM | Plasma | Ok | |
| 7 | 11:45:27:537AM | Plasma | Ok | |
| 8 | 11:59:16:907AM | Plasma | Ok | |
| 9 | 12:14:14:930PM | Plasma | Ok | |
| 10 | 12:27:01:303PM | Plasma | Ok | |
| 11 | 12:39:59:860PM | Plasma | Ok | |
| 12 | 12:52:58:963PM | Plasma | Ok | |
| 13 | 01:08:17:160PM | Plasma | Ok | |
| 14 | 01:21:25:063PM | Plasma | Ok | |
| 15 | 01:34:47:743PM | Plasma | Ok | |
| 16 | 01:52:49:300PM | Plasma | Ok | |
| 17 | 02:07:07:920PM | Plasma | Ok | |
| 18 | 02:20:03:460PM | Plasma | Ok | |
| 19 | 02:41:21:657PM | Plasma | Ok | |
| 20 | 03:00:13:620PM | Plasma | Ok | |
| 21 | 03:13:16:630PM | Plasma | Ok | |
| 22 | 03:27:30:750PM | Plasma | Ok | |
| 23 | 03:45:21:100PM | Plasma | Ok | |
| 24 | 04:01:11:157PM | Plasma | Ok | |
| 25 | 04:16:01:527PM | Plasma | Ok | |
| 26 | 04:35:02:143PM | Plasma | Bad | Problem with the Air switch |
| 27 | 04:50:12:170PM | Plasma | Bad | Alternator explosive fuses blew prior to shot. |