| Miniproposals | ||||||||||
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| Operators | |
| Session leader(s): | Steve Wukitch |
| Physics operator(s): | Robert Granetz |
| Engineering operator(s): | Bill Parkin,Ed Fitzgerald,Bill Cochran |
| Engineering Operator Run Comment |
| PO-Granetz,SL-Wukitch,EO-Fitzgerald,Cochran,Parkin. Run Plan MP 215: J |
| Session Leader Plans |
| Physics Operators Plans |
| Session Leader Summaries |
| Entered: Jul 7 2004 03:49:26:320PM |
| Author: To Be Determined |
| Engineering setup: ECDC in D2 overnight prior to run. Be prepared for ECDC in D2 between shots (using B-top valve). Power systems as on 1010605012. Gas setup: fill B-top with 6 psi of D2 Hybrid enabled (PG4) fill B-side lower with 1 psi of Ar Hybrid enabled (PG1) fill B-side upper with 6 psi of He Hybrid enabled (PG2) fill C-side with 30 psi of D2 Hybrid enabled (PG3) fill J-bottom with nothing Hybrid DISABLED (PG5) Enable the following gate valves: ECE, DNB, VUV Run starts at 09:00 and ends at 17:00. ------------------------------------------------------------------------------- RF Setup: Transmitters 1, 2, 3, and 4 should be in run-on by 08:00. ------------------------------------------------------------------------------- Run Plan: MP 215 : J antenna conditioning Start from a recent shot (1010605016). Between-shot ECDC will probably be used to reduce the H/D ratio further. Helium will be puffed for DNB/CXRS. We will also try to do some more shaping changes for the ASDEX comparison MP. This will primarily involve increasing CLEARIN (keeping outer gap constant). 1. Increase power and pulse length 2. Maximize Joules through D, E, and J-port, ie overlap 3. Raise density -> nl04~1x10^20 4. Raise plasma current -> 1 MA ------------------------------------------------------------------------------ FMIT#4 failed this morning: driver bias is shorted. 001 demand: begin with 1010605015 Ip~0.8 MA, nl04~0.5x10^20 D: 0.8 MW [0.5,1.4] sec E: 0.8 MW [0.5,1.4] sec result: plasma nl04~0.8x10^20, Ip~0.8 MA D: 0.8 MW one fault E: 0 no power - low power control failed tested #2 into dummy load - okay match was poor because the auto malfunctioned and moved it to some other position. 002 OH test 003 OH test 004 demand: Ip~1 MA, nl04~0.8x10^20 D: 0.8 MW [0.5,1.4] sec E: 0.8 MW [0.5,1.4] sec result: plasma nl04~0.8x10^20, Ip~1 MA D: 0.8 MW faulted off E: 0.8 MW clean 005 power test 006 computer test 007 demand : Ip~1MA, nl04~0.8x10^20 D: 0.8 MW [0.5,1.4] sec E 0.8 MW [0.5,1.4] sec result: plasma nl04~1.0x10^20, Ip~1MA D: 0.6-0.8 MW faulted off (max # of faults) E: 0.6-0.8 MW one fault 1.11 sec 008 demand : Ip~1MA, nl04~0.8x10^20 D: 0.8 MW [0.5,1.4] sec E 0.8 MW [0.5,1.4] sec result: plasma - disrupted @1.169 s nl04~1.0x10^20, Ip~1MA D: 0.6-0.8 MW faulted off (max # of faults) E: 0.6-0.8 MW two faults .905, 1.17 sec 009 demand : Ip~1MA, nl04~0.8x10^20 D: 0.8 MW [0.5,1.4] sec E 0.8 MW [0.5,1.4] sec result: fizzle 010 demand : Ip~1MA, nl04~0.8x10^20 D: 0.8 MW [0.5,1.4] sec E 0.8 MW [0.5,1.4] sec result: plasma nl04~1.0x10^20, Ip~1MA D: 0.6-0.8 MW clean E: 0.6-0.8 MW clean 011 demand : Ip~1MA, nl04~0.8x10^20 D: 1.0 MW [0.5,1.5] sec E 1.0 MW [0.5,1.5] sec result: plasma nl04~1.0x10^20, Ip~1MA D: 0.8 MW fulted off after 0.59 s (max # of faults) E: 0.6-1.0 MW clean 012 demand : Ip~1MA, nl04~0.8x10^20 D: 1.0 MW [0.5,1.5] sec E 1.0 MW [0.5,1.5] sec result: plasma nl04~1.1x10^20, Ip~1MA D: 0.9 MW faulted off after 0.82 s (max # of faults) E: 0.6-1.0 MW clean 013 demand : Ip~1MA, nl04~0.8x10^20 D: 1.0 MW [0.5,1.5] sec E 1.0 MW [0.5,1.5] sec result: plasma nl04~1.1x10^20, Ip~1MA D: 0.6-1.0 MW faulted off after 0.95 s (max # of faults) E: 0.6-1.0 MW clean 014 demand : Ip~1MA, nl04~0.8x10^20 D: 1.0 MW [0.5,1.5] sec E 1.2 MW [0.5,1.5] sec result: plasma - disrupted at 1.00 s nl04~1.0x10^20, Ip~1MA D: 0.6-1.0 MW clean to disruption E: 0.6-1.2 MW clean to disruption 015 demand : Ip~1MA, nl04~0.8x10^20 D: 1.0 MW [0.5,1.5] sec E 1.2 MW [0.5,1.5] sec result: plasma nl04~1.0x10^20, Ip~1MA D: 0.6-1.0 MW clean to disruption E: 0.6-1.2 MW faulted on voltage limit @ 0.87 (was ~28 kV) (after shot we reset E limit to 35 kV) D: 0.6-1.0 MW clean to disruption E: 0.6-1.2 MW clean to disruption 016 demand : Ip~1MA, nl04~0.8x10^20 D: 1.2 MW [0.5,1.5] sec E 1.3 MW [0.5,1.5] sec result: plasma nl04~1.0x10^20, Ip~1MA D: 0.6-1.2 MW clean until injection that caused disruption E: 0.6-1.3 MW clean until injection that caused disruption 017 demand : Ip~1MA, nl04~0.8x10^20 D: 1.4 MW ramped [0.5,1.5] sec E 1.4 MW ramped [0.5,1.5] sec result: fizzle ____________________ Overall D and E conditioning was improved to 1.25 MW on each, 2.5 MW total. See shot 016. The density rise associated with the RF pulse is essentially gone now. |
| Physics Operator Summaries |
| Entered: Jul 7 2004 04:37:13:160PM |
| Author: To Be Determined |
| Physics operator summary for run 1010606 (Wednesday): MP 215 : J antenna conditioning Session leader: Boivin Physics operator: R. Granetz Engineer: G. Dekow/B. Cochran Summary: We couldn't run the J-antenna at all today because of a fault in the J4 driver. So we ran mostly 1 MA plasmas to continue conditioning the D and E antennas, as well as the machine. There were many nuisance problems today (EF2L misbehavior, hung shot cycles, etc.), which limited the number of plasma shots. But the plasmas we did get had Prf up to 2.2 MW (from D and E). The H/D was reduced to about 0.8 by the end of the run, thanks to ECDC between shots (with the dwell set at R=89 cm, and the fill pressure doubled). Scorecard: 10 plasmas 2 fizzles 0 duds 2 tests 3 aborted and/or screwed up by computer problems ---------- 17 total ------------------------------------------------------------------------------- Engineering setup: ECDC in D2 overnight prior to run. Be prepared for ECDC in D2 between shots (using B-top valve). Power systems as on 1010605012. Gas setup: fill B-top with 6 psi of D2 Hybrid enabled (PG4) fill B-side lower with 1 psi of Ar Hybrid enabled (PG1) fill B-side upper with 6 psi of He Hybrid enabled (PG2) fill C-side with 30 psi of D2 Hybrid enabled (PG3) fill J-bottom with nothing Hybrid DISABLED (PG5) Enable the following gate valves: ECE, DNB, VUV Run starts at 09:00 and ends at 17:00. ------------------------------------------------------------------------------- RF Setup: Transmitters 1, 2, 3, and 4 should be in run-on by 08:00. ------------------------------------------------------------------------------- Run Plan: MP 215 : J antenna conditioning Start from a recent shot (1010605016). Between-shot ECDC will probably be used to reduce the H/D ratio further. Helium will be puffed for DNB/CXRS. We will also try to do some more shaping changes for the ASDEX comparison MP. This will primarily involve increasing CLEARIN (keeping outer gap constant). ------------------------------------------------------------------------------- Overnight ECDC in D2 was NOT done, due to a fault occurring with the PEI supply sometime during the night. Hybrid coldstart done; no errors found ------------------------------------------------------------------------------- The start of the run will be delayed in order to fix a problem with the J4 transmitter. Shot 01 -- Plasma. Ip=0.8 MA, Btor=5.4 T, nl_04=0.8e20 m-2. EF2L had a large oscillation. Prf=0.85 MW from D. H/D asymptotes at 1.55. Next shot: PLC test of EF2's Shot 02 -- Test. EF2's under PLC control, 2.5 kA. Looks okay. Shot 03 -- Test. EF2's under hybrid control, to test feedback. Looks good. Next shot: go to 1 MA, reduce CLEARIN and RXL to improve stability and get strike point off of outer nose. Shot 04 -- Plasma. Ip=0.96 MA. nl_04=0.9e20 m-2. Prf up to 1.3 MW from both D and E. H/D ramps up to 1.1. Start between-shot ECDC in D2. Set the ECDC to dwell at a radius of 89 cm, rather than on the inboard wall. Next shot: raise nl_04 to 0.8e20 m-2. Shot 05 -- Test. No-power shot cycle. A spurious fault from the I2t will require a no power test cycle. Next shot: plasma. 1 MA, 0.8e20 m-2. Joe Snipes is taking over as physics operator for 2 hours. Shot 06 -- Test. No-power shot cycle. See Joe Snipes's logbook comments. Shot 07 -- Test. No-power shot cycle. See Joe Snipes's logbook comments. Shot 08 -- Plasma. 1 MA. Disrupted at t=1.17 s. See Joe Snipes's logbook comments. Shot 09 -- Fizzle. See Joe Snipes's logbook comments Shot 10 -- Plasma. 1 MA. Prf=1.65 MW from D and E. H/D ramps up to 1.5. Granetz returns as physics operator. Shot 11 -- Plasma. 1 MA. Prf=1.0 MW from E only. H/D ramps up to 1.5. Re-start between-shot ECDC in D2, with dwell set at R=89 cm. Next shot: delay helium puff to t=1.2 s (for DNB), and increase outer gap by 4 mm (reduce RCUR by 2 mm). Shot 12 -- Plasma. 1 MA. Prf=1.7 Mw, then 1.0 after D arced out at t=0.81 s. A flash is seen on the video from D antenna at that time, and an impurity injection is seen on Prad. H/D peaks at 1.0, which is a noticeable improvement compared to before the between-shot ECDC was turned back on after shot 11. Between-shot ECDC. Next shot: move He puff back to start at t=0.4 s. Increase argon puff by 10 ms (to 45 ms). Shot 13 -- Plasma. H/D rises to 0.9, still improving. Prf=2.0 MW, then 1.0 MW after D trips at t=0.94 s. There's a small amount of heating (on previous shot also). Outer gap is at 10 mm, which is what the RF wants. Between-shot ECDC. Next shot: no changes. Shot 14 -- Plasma. Disrupted at t=1.00 s. Prf=2.0-2.2 MW from both D and E. H/D was lower, but only because plasma didn't last as long. Between-shot ECDC. Next shot: no changes (disruption recovery) Shot 15 -- Plasma. Good shot, inspite of the previous disruption. H/D=0.8 ! Prf=2.0 MW. Noticeable heating. Between-shot ECDC. Next shot: no changes Shot 16 -- Plasma. Disrupted at t=0.87 s, due to an injection at 0.84 s. Prf=2.3 MW max. H/D=0.5 before the disruption. Next shot: no changes Shot 17 -- Fizzle. End of run. |
| Session Leader Comments |
| Physics Operator Comments | |||
| Jun 5 2001 07:17:36:110PM | Robert Granetz | ------------------------------------------------------------------------------- Engineering setup: ECDC in D2 overnight prior to run. Be prepared for ECDC in D2 between shots (using B-top valve). Power systems as on 1010605012. Gas setup: fill B-top with 6 psi of D2 Hybrid enabled (PG4) fill B-side lower with 1 psi of Ar Hybrid enabled (PG1) fill B-side upper with 6 psi of He Hybrid enabled (PG2) fill C-side with 30 psi of D2 Hybrid enabled (PG3) fill J-bottom with nothing Hybrid DISABLED (PG5) Enable the following gate valves: ECE, DNB, VUV Run starts at 09:00 and ends at 17:00. ------------------------------------------------------------------------------- RF Setup: Transmitters 1, 2, 3, and 4 should be in run-on by 08:00. ------------------------------------------------------------------------------- Run Plan: MP 215 : J antenna conditioning Start from a recent shot (1010605016). Between-shot ECDC will probably be used to reduce the H/D ratio further. Helium will be puffed for DNB/CXRS. We will also try to do some more shaping changes for the ASDEX comparison MP. This will primarily involve increasing CLEARIN (keeping outer gap constant). ------------------------------------------------------------------------------- | |
| Jun 6 2001 09:09:25:457AM | Robert Granetz | ------------------------------------------------------------------------------- Overnight ECDC in D2 was NOT done, due to a fault occurring with the PEI supply sometime during the night. Hybrid coldstart done; no errors found ------------------------------------------------------------------------------- | |
| Jun 6 2001 09:21:03:473AM | Robert Granetz | The start of the run will be delayed in order to fix a problem with the J4 transmitter. | |
| Jun 6 2001 10:38:21:640AM | 1010606001 | Robert Granetz | Shot 01 -- Plasma. Ip=0.8 MA, Btor=5.4 T, nl_04=0.8e20 m-2. EF2L had a large oscillation. Prf=0.85 MW from D. H/D asymptotes at 1.55. Next shot: PLC test of EF2's |
| Jun 6 2001 10:47:04:463AM | 1010606002 | Robert Granetz | Shot 02 -- Test. EF2's under PLC control, 2.5 kA. Looks okay. |
| Jun 6 2001 10:57:03:527AM | 1010606003 | Robert Granetz | Shot 03 -- Test. EF2's under hybrid control, to test feedback. Looks good. Next shot: go to 1 MA, reduce CLEARIN and RXL to improve stability and get strike point off of outer nose. |
| Jun 6 2001 11:20:16:923AM | 1010606004 | Robert Granetz | Shot 04 -- Plasma. Ip=0.96 MA. nl_04=0.9e20 m-2. Prf up to 1.3 MW from both D and E. H/D ramps up to 1.1. Start between-shot ECDC in D2. Set the ECDC to dwell at a radius of 89 cm, rather than on the inboard wall. Next shot: raise nl_04 to 0.8e20 m-2. |
| Jun 6 2001 11:34:19:147AM | 1010606005 | Robert Granetz | Shot 05 -- Test. No-power shot cycle. A spurious fault from the I2t will require a no power test cycle. Next shot: plasma. 1 MA, 0.8e20 m-2. |
| Jun 6 2001 11:46:11:650AM | 1010606005 | Robert Granetz | Joe Snipes is taking over as physics operator for 2 hours. |
| Jun 6 2001 12:22:17:830PM | 1010606005 | Joseph Snipes | Due to computer problems, we are going to run a no-power test for shot 6. |
| Jun 6 2001 01:20:24:013PM | 1010606007 | Joseph Snipes | Shot 7: Good shot full length plasma. Ratiomatic oscillating wildly so no pressure measurement at breakdown. |
| Jun 6 2001 01:34:20:063PM | 1010606008 | Joseph Snipes | Shot 8: Disrupted at 1.2 s perhaps due to something that fell into the plasma. |
| Jun 6 2001 02:08:36:290PM | 1010606009 | Joseph Snipes | Shot 9: Repeat hopefully, without the disruption. As hoped, we did not get the disruption. However, we got a fizzle! |
| Jun 6 2001 02:09:32:713PM | 1010606010 | Joseph Snipes | Shot 10: Reduced pre-puff by 5 msec to 20 ms duration. Good shot. |
| Jun 6 2001 02:19:23:383PM | 1010606010 | Joseph Snipes | Shot 11: Since the pressure at breakdown came down, I raised the pre-puff again for this shot back to 25 ms duration. |
| Jun 6 2001 02:50:11:400PM | 1010606011 | Robert Granetz | Granetz returns as physics operator. Shot 11 -- Plasma. 1 MA. Prf=1.0 MW from E only. H/D ramps up to 1.5. Re-start between-shot ECDC in D2, with dwell set at R=89 cm. Next shot: delay helium puff to t=1.2 s (for DNB), and increase outer gap by 4 mm (reduce RCUR by 2 mm). |
| Jun 6 2001 03:35:27:547PM | 1010606012 | Robert Granetz | Shot 12 -- Plasma. 1 MA. Prf=1.7 Mw, then 1.0 after D arced out at t=0.81 s. A flash is seen on the video from D antenna at that time, and an impurity injection is seen on Prad. H/D peaks at 1.0, which is a noticeable improvement compared to before the between-shot ECDC was turned back on after shot 11. Between-shot ECDC. Next shot: move He puff back to start at t=0.4 s. Increase argon puff by 10 ms (to 45 ms). |
| Jun 6 2001 03:40:55:260PM | 1010606013 | Robert Granetz | Shot 13 -- Plasma. H/D rises to 0.9, still improving. Prf=2.0 MW, then 1.0 MW after D trips at t=0.94 s. There's a small amount of heating (on previous shot also). Outer gap is at 10 mm, which is what the RF wants. Between-shot ECDC. Next shot: no changes. |
| Jun 6 2001 04:01:22:463PM | 1010606014 | Robert Granetz | Shot 14 -- Plasma. Disrupted at t=1.00 s. Prf=2.0-2.2 MW from both D and E. H/D was lower, but only because plasma didn't last as long. Between-shot ECDC. Next shot: no changes (disruption recovery) |
| Jun 6 2001 04:41:52:633PM | 1010606015 | Robert Granetz | Shot 15 -- Plasma. Good shot, inspite of the previous disruption. H/D=0.8 ! Prf=2.0 MW. Noticeable heating. Between-shot ECDC. Next shot: no changes |
| Jun 6 2001 05:07:06:313PM | 1010606016 | Robert Granetz | Shot 16 -- Plasma. Disrupted at t=0.87 s, due to an injection at 0.84 s. Prf=2.3 MW max. H/D=0.5 before the disruption. Next shot: no changes |
| Jun 6 2001 05:17:17:190PM | 1010606017 | Robert Granetz | Shot 17 -- Fizzle. End of run. |
| Engineering Operator Comments | ||||
| Shot | Time | Type | Status | Comment |
| 1 | 10:10:20:423AM | Plasma | Ok | |
| 2 | 10:40:15:157AM | Test | Ok | EF2 U/L PLC power supply test |
| 3 | 10:52:24:020AM | Test | Ok | EF2U/L hybrid control test |
| 4 | 11:04:48:553AM | Plasma | Ok | |
| 5 | 11:29:16:250AM | Plasma | Bad | Bad i2t type 2 fault prevented power shot. |
| 6 | 12:20:03:077PM | Test | Ok | |
| 7 | 12:35:04:677PM | Plasma | Ok | |
| 8 | 01:26:29:240PM | Plasma | Ok | |
| 9 | 01:49:04:883PM | Plasma | Ok | |
| 10 | 02:07:48:337PM | Plasma | Ok | |
| 11 | 02:34:07:453PM | Plasma | Ok | |
| 12 | 02:57:52:943PM | Plasma | Ok | |
| 13 | 03:24:41:187PM | Plasma | Ok | |
| 14 | 03:52:52:090PM | Plasma | Ok | |
| 15 | 04:18:35:693PM | Plasma | Ok | |
| 16 | 04:44:27:560PM | Plasma | Ok | |
| 17 | 05:11:04:430PM | Plasma | Ok | |