| Miniproposals | ||||||||||||
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| Operators | |
| Session leader(s): | Rejean Boivin,Steve Wukitch |
| Physics operator(s): | Earl Marmar |
| Engineering operator(s): | Bill Parkin,Ed Fitzgerald |
| Engineering Operator Run Comment |
| MP #268 RF conditioning SL:Wukitch/Boivin EO:Fitzgerald/Parkin |
| Session Leader Plans |
| Physics Operators Plans |
| Session Leader Summaries |
| Entered: Jul 7 2004 03:49:26:007PM |
| Author: To Be Determined |
| Engineering setup and run plan for 1001208 MP #268 RF conditioning Session leaders: Wukitch/Boivin Physics operator: Marmar ------------------------------------------------------------------------------- Engineering setup: ECDC in D2 overnight, stopping 2 hours before the run. Power systems as on 1001207017. 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 35 psi of D2 Hybrid DISABLED, for ECDC fill C-side with 30 psi of D2 Hybrid enabled leave J-bot as is Hybrid DISABLED Enable the following gate valves: ECE, VUV, Beast, DNB Run starts at 09:00 and ends at 17:00. ------------------------------------------------------------------------------- RF Setup: XMTRs 3 and 4 should be made ready by 8:00 (run-on). XMTRs 1 and 2 should be in standby mode. ------------------------------------------------------------------------------- Run Plan: Further tests of J-port performance as a four-strap. Re-load 1001207017, and lower nl_04. Fire J-port into plasma. There is a plan to do a current scan. ------------------------------------------------------------------------------- 001 request: reload 1001207017 BT=5.2 T, Ip=0.8 MA, nl_04~1e20 m^-2 J ramp to 1 MW [.6,1.4] sec result: plasma J3: 0.5 MW 3 faults J4: 0.5 MW 3 faults + reflected power spikes observed on pci data (200 kHz) #3 and #4 002 request:BT=5.2 T, Ip=0.8 MA, nl_04~1e20 m^-2 J ramp to 1.5 MW [.6,1.4] sec result: plasma, 2 elmfree H-modes J3: 0.75 MW J4: 0.75 MW injections are not from J-port 003 request:BT=5.2 T, Ip=0.8 MA, nl_04~0.8e20 m^-2 J ramp to 2 MW [.6,1.4] sec result: plasma, 2 elmfree H-modes J3: 1.0 MW J4: 1.0 MW max faults by 1 sec + neutral pressure is 0.1 mtorr 004 request:BT=5.2 T, Ip=0.8 MA, nl_04~0.8e20 m^-2 J ramp to 2.5 MW [.6,1.4] sec result: plasma, 2 elmfree H-modes J3: 1.3 MW J4: 1.3 MW max faults by 1 sec + nasty injection from upper K-side (last front tile) 005 request:BT=5.2 T, Ip=1.0 MA, nl_04~0.8e20 m^-2 J ramp to 2.5 MW [.6,1.4] sec result: plasma, 2 elmfree H-modes J3: 1. MW J4: 1.0 MW max faults by 1 sec + nasty injection from upper K-side (last front tile) 006 request:BT=5.2 T, Ip=1.2 MA, nl_04~0.8e20 m^-2 J ramp to 2.5 MW [.6,1.4] sec result: plasma, 2 elmfree H-modes J3: 1.2 MW J4: 1.2 MW max faults by 1 sec + nasty injection from upper K-side (last front tile) + nasty spark from FS in front of strap 1 007 request:BT=5.2 T, Ip=0.8 MA, nl_04~0.8e20 m^-2 J ramp to 2.5 MW [.6,1.4] sec phase [0,0,0,0] digital phase shifter set to 230 deg result: plasma J3: 0.0 MW J4: 0.0 MW max faults early 008 request:BT=5.2 T, Ip=0.8 MA, nl_04~0.8e20 m^-2 J ramp to 2.5 MW [.6,1.4] sec phase [0,0,0,0] digital phase shifter set to 230 deg result: plasma - disrupted earlier (@800 kW) J3: 0.4 MW J4: 0.4 MW 009 fizzle 010 request:BT=5.2 T, Ip=0.8 MA, nl_04~0.8e20 m^-2 J ramp to 2.0 MW [.6,1.4] sec phase [0,1,0,1] digital phase shifter set to 25 deg result: plasma, EDA J3: 1 MW J4: 1 MW *** no activity on the antenna begin discharge cleaning between shots 011 request:BT=5.2 T, Ip=0.8 MA, nl_04~0.8e20 m^-2 J ramp to 2.5 MW [.6,1.4] sec phase [0,1,0,1] digital phase shifter set to 25 deg result: plasma, disrupted at 1.1 sec J3: 1.25 MW J4: 1.25 MW antenna structure is quiet up to disruption - RF pickup in EF1 supplies? 012 request:BT=5.2 T, Ip=0.8 MA, nl_04~0.8e20 m^-2 J ramp to 2.5 MW [.6,1.4] sec phase [0,1,0,1] digital phase shifter set to 25 deg result: plasma - H-modes with injections J3: 1.25 MW 4 faults J4: 1.25 MW nasty glow from K-side upper corner 013 request:BT=5.2 T, Ip=0.8 MA, nl_04~0.8e20 m^-2 J ramp to 2.5 MW [.6,1.4] sec phase [0,1,0,1] digital phase shifter set to 25 deg result: plasma - same results with more faults J3: 1.25 MW J4: 1.25 MW nasty glow from K-side upper corner 014 request:BT=5.2 T, Ip=0.8 MA, nl_04~0.8e20 m^-2 J ramp to 2.5 MW [.6,1.4] sec phase [0,1,0,1] digital phase shifter set to 0 deg result: plasma - 1.0 sec J3: 0.9 MW J4: 0.9 MW nasty glow from H-side lower corner disrupted from 1.8 MW 015 request:BT=5.2 T, Ip=0.8 MA, nl_04~0.8e20 m^-2 J ramp to 2.5 MW [.6,1.4] sec phase [0,1,0,1] digital phase shifter set to 0 deg result: plasma - disrupted earlier J3: 0.7 MW J4: 0.7 MW nasty glow from H-side lower corner disrupted from 1.4 MW 016 request:BT=5.2 T, Ip=0.8 MA, nl_04~0.8e20 m^-2 D ramp to 0.75 MW E ramp to 0.75 MW J ramp to 2.0 MW [.6,1.4] sec phase [0,1,0,1] digital phase shifter set to 25 deg result: plasma - multiple H-modes D: 0.8 before H-mode E: 0 signal generator disconnected J3: 0.9 MW J4: 1 MW need to tune all of the antennas and raise power level 017 request:BT=5.2 T, Ip=0.8 MA, nl_04~0.8e20 m^-2 D ramp to MW E ramp to 0.75 MW J ramp to 2.0 MW [.6,1.4] sec phase [0,1,0,1] digital phase shifter set to 25 deg result: plasma - multiple H-modes D: 0.8 before H-mode E: 0 signal generator disconnected J3: 0.9 MW J4: 1 MW 018 request: BT=5.2 T, Ip=0.8 MA, nl_04~0.8e20 m^-2 J squarish ramp to 1.8 MW [.6,1.4] sec normal phase D squarish pulse [0.6,1.5]sec 1.2 MW E " " " 1.1 MW result: plasma, multiple H-modes D 1.2 MW 1 trip E 1.1 MW 1trip J3: 0.9 MW many trips J4: 0.9 MW many trips next shot reduce J a bit in power, raise D and E. 019 request: BT=5.2 T, Ip=0.8 MA, nl_04~0.8e20 m^-2 J squarish ramp to 1.8 MW [0.6,1.5] sec normal phase D squarish pulse [0.6,1.5]sec 1.5 MW E " " " 1.5 MW result: plasma, multiple H-modes D 1.5 MW 4 trips E 1.5 MW 1 trip J3: 0.9 MW 0 trip good pulse J4: 0.9 MW 0 trip but disrupted! Summary: We lowered the neutral pressure by decreasing the target density. The visible emission over the straps appeared to decrease, but the antenna corner light emission was still present. From spectroscopic measurements, increased N concentrations were associated with the corner emission. Disruptions were also correlated with excessive emission from the antenna corner. Small changes in phase from [0,pi,0,pi] decreased the power level from 2.5 MW at which the disruption would occur [004,012,014] to ~1.8 MW and [0,0,0,0] phase resulted in disruptions at 800 kW. Changing the current did not change the corner emission. However, the corresponding hot spot location on the H-side tiles changed consistent with the change in q (compare 006 frame 64 and 012 frame 89). This suggests there is an electric field developing on a field line. |
| Physics Operator Summaries |
| Session Leader Comments |
| Physics Operator Comments | |||
| Dec 8 2000 08:43:24:093AM | Earl Marmar | Engineering setup and run plan for 1001208 MP #268 RF conditioning Session leaders: Wukitch/Boivin Physics operator: Marmar ------------------------------------------------------------------------------- Engineering setup: ECDC in D2 overnight, stopping 2 hours before the run. Power systems as on 1001207017. 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 35 psi of D2 Hybrid DISABLED, for ECDC fill C-side with 30 psi of D2 Hybrid enabled leave J-bot as is Hybrid DISABLED Enable the following gate valves: ECE, VUV, Beast, DNB Run starts at 09:00 and ends at 17:00. ------------------------------------------------------------------------------- RF Setup: XMTRs 3 and 4 should be made ready by 8:00 (run-on). XMTRs 1 and 2 should be in standby mode. ------------------------------------------------------------------------------- Run Plan: Further tests of J-port performance as a four-strap. Re-load 1001207017, and lower nl_04. Fire J-port into plasma. There is a plan to do a current scan. | |
| Dec 8 2000 08:43:55:047AM | Earl Marmar | Hybrid coldstart no errors all matrices respond | |
| Dec 8 2000 09:07:58:903AM | 1001208001 | Earl Marmar | load from 1001207017 lower zcur by 5 mm increase rcur by 1 mm increase prepuff by 2 msec to 20 msec (no DNB on this shot) plasma |
| Dec 8 2000 09:46:38:640AM | 1001208001 | Earl Marmar | After shot 1, alternator had a problem. There will be a delay of at least 1 hour. |
| Dec 8 2000 10:54:02:670AM | 1001208002 | Earl Marmar | lower nl_zmeter target to 0.55 from 0.66 (attempt to reduce density by 10%) plasma 2 h-modes |
| Dec 8 2000 11:34:03:123AM | 1001208003 | Earl Marmar | lower nl_zmeter target to 0.4; reduce voltage preprog on PG3. Reduce prefill puff by 1 msec plasma |
| Dec 8 2000 11:34:50:000AM | 1001208004 | Earl Marmar | no pcs changes plasma |
| Dec 8 2000 11:56:49:107AM | 1001208005 | Earl Marmar | raise Ip to 1 MA plasma disrupt at 1.01 s one corner of the J antenna appears to be spewing |
| Dec 8 2000 12:12:35:093PM | 1001208006 | Earl Marmar | raise Ip to 1.2 MA plasma |
| Dec 8 2000 12:40:51:827PM | 1001208007 | Earl Marmar | Ip to 800 kA (load wire from shot 4) phase scan on J-port antenna plasma rf tripped repeatedly |
| Dec 8 2000 01:03:55:747PM | 1001208008 | Earl Marmar | no pcs changes plasma disrupt at .815 s some RF power; nominally 0,0,0,0 phasing |
| Dec 8 2000 01:15:58:280PM | 1001208009 | Earl Marmar | no pcs changes dud no EF3 --> no vertical field |
| Dec 8 2000 01:38:24:793PM | 1001208010 | Earl Marmar | no PCS changes plasma solid EDA h-mode at 2 MW RF Phase 0, pi, 0, pi |
| Dec 8 2000 02:04:38:263PM | 1001208011 | Earl Marmar | ECDC in deuterium for 5 minutes before this shot no PCS changes plasma disrupt at 1.11 s Steve Wolfe reports spurious voltage readings on EF1U just before disruption |
| Dec 8 2000 02:26:20:810PM | 1001208012 | Earl Marmar | no pcs changes plasma antenna lighting up at 2.25 MW |
| Dec 8 2000 02:52:51:123PM | 1001208013 | Earl Marmar | increase outer gap (RCUR in by 3.5 mm) plasma |
| Dec 8 2000 03:16:48:420PM | 1001208014 | Earl Marmar | no pcs changes plasma disrupt at .997 s |
| Dec 8 2000 03:34:47:187PM | 1001208015 | Earl Marmar | no pcs changes plasma disrupt at 0.916 |
| Dec 8 2000 04:03:40:560PM | 1001208016 | Earl Marmar | no PCS changes plasma bringing up D and E port in addition to J Got D and J, no E on this shot |
| Dec 8 2000 04:21:37:687PM | 1001208017 | Earl Marmar | no pcs changes plasma brief periods with 4 MW ICRF |
| Dec 8 2000 05:06:59:700PM | 1001208019 | Earl Marmar | no pcs changes plasma disrupt at 1.18s |
| Engineering Operator Comments | ||||
| Shot | Time | Type | Status | Comment |
| 1 | 08:58:20:733AM | Plasma | Ok | |
| 2 | 10:42:38:420AM | Plasma | Ok | |
| 3 | 11:00:49:623AM | Plasma | Ok | |
| 4 | 11:20:50:950AM | Plasma | Ok | |
| 5 | 11:41:56:200AM | Plasma | Ok | |
| 6 | 12:03:32:717PM | Plasma | Ok | |
| 7 | 12:25:17:857PM | Plasma | Ok | |
| 8 | 12:48:49:140PM | Plasma | Ok | |
| 9 | 01:09:03:607PM | Plasma | Bad | EF3 Fault, EF3 breaker opened during INIT |
| 10 | 01:22:23:200PM | Plasma | Ok | |
| 11 | 01:47:56:107PM | Plasma | Ok | |
| 12 | 02:14:46:200PM | Plasma | Ok | |
| 13 | 02:38:07:467PM | Plasma | Ok | |
| 14 | 03:00:55:840PM | Plasma | Ok | |
| 15 | 03:25:09:280PM | Plasma | Bad | OH1 type 1 flt, comm. failure |
| 16 | 03:50:04:327PM | Plasma | Ok | |
| 17 | 04:14:21:030PM | Plasma | Ok | |
| 18 | 04:38:40:950PM | Plasma | Ok | |
| 19 | 05:03:11:607PM | Plasma | Ok | |