| Miniproposals | ||||||||||
|
| Operators | |
| Session leader(s): | Steve Wukitch |
| Physics operator(s): | Earl Marmar |
| Engineering operator(s): | Bill Cochran,Ed Fitzgerald |
| Engineering Operator Run Comment |
| MP355 RF Conditioning |
| Session Leader Plans |
| Entered: Mar 21 2006 10:19:29:647AM |
| Author: Steve Wukitch |
| Engineering setup for Tuesday 21-Mar-2006
MP355 RF Conditioning Session leader: Wukitch Physics operator: Marmar Overnight ECDC in D2, and bake at 60 C. Run begins at 09:00 and ends at 17:00 Power systems as on 1060314003 (1.0 MA fiducial, 5.4 T, USN) A-coil configuration: normal [+Dtop -Dbot -Jtop +Jbot] and enabled. Gas Setup: fill B-Top with 6 psi D2 Hybrid enabled (PG4) fill B-side lower with 1 psi Ar + 2 psi Ne Hybrid DISABLED (PG1) leave B-side upper as is Hybrid DISABLED (PG2) fill B-main (C-side) with 40 psi D2 Hybrid enabled (PG3) fill NINJA with 12 psi D2 Enabled Enable the following gate valves and shutters, assuming no vacuum problems: ECE, VUV, Z-bolo shutters Torvac setup: Gate valves open Important Diagnostics: magnetics, standard impurity spectroscopy ------------------------------------------------------------------------------- ICRF Setup: FMIT#1-4 in run-on by 08:30. ------------------------------------------------------------------------------- Plan: Continue machine cleanup and ICRF conditioning (including Jport) in fiducial discharges. Once reasonable power is reached on J antenna, begin exploration of pulse length and power limits ------------------------------------------------------------------------------- |
| Physics Operators Plans |
| Entered: Mar 21 2006 08:46:42:347AM |
| Author: Earl Marmar |
| MP355 RF Conditioning
Session leader: Wukitch Physics operator: Marmar Overnight ECDC in D2, and bake at 60 C. Run begins at 09:00 and ends at 17:00 Power systems as on 1060315003 (1.0 MA fiducial, 5.4 T, upper single null) A-coil configuration: normal [+Dtop -Dbot -Jtop +Jbot] and enabled. Gas Setup: fill B-Top with 6 psi D2 Hybrid enabled (PG4) fill B-side lower with 1 psi Ar + 2 psi Ne Hybrid DISABLED (PG1) leave B-side upper as is Hybrid DISABLED (PG2) fill B-main (C-side) with 40 psi D2 Hybrid enabled (PG3) fill NINJA with 12 psi D2 Enabled Enable the following gate valves and shutters, assuming no vacuum problems: ECE, VUV, Z-bolo shutters Torvac setup: Gate valves open Important Diagnostics: magnetics, standard impurity spectroscopy ------------------------------------------------------------------------------- ICRF Setup: FMIT#1-4 in run-on by 08:30. ------------------------------------------------------------------------------- Plan: Continue machine cleanup and ICRF conditioning (including Jport) in fiducial discharges. |
| Session Leader Summaries |
| Entered: Mar 21 2006 05:10:06:963PM |
| Author: Steve Wukitch |
| Run Summary
I wish all the RF antennas worked as well as E antenna (probably will perform poorly tomorrow). E antenna is operating up to 1.0 MW reliably and required little conditioning to reach this level of performance. D antenna started off well but deteriorated after shot 002 and was a struggle for the remainder of the day. We observed similar problems last fall and we will vacuum condition before tomorrow's run. J antenna got to 2 MW but is inconsistent and is conditioning more slowly than operation without a screen. |
| Physics Operator Summaries |
| Entered: Mar 22 2006 03:16:48:290PM |
| Author: Earl Marmar |
| MP355 RF Conditioning
Session leader: Wukitch Physics operator: Marmar The run started well. After a dud on shot 1, I raised the fill pressure a bit, and got 10 good full-length plasmas in a row. On shot 12, a capacitor shorted in the OH1 commutation bank, apparently right around t=0; the resulting change in the fields (particularly Bz) in the first 10 msec probably caused the fizzle that resulted. After about two and a half hours to fix the supply, we managed to get only 3 more plasmas, with 5 duds and a late breakdown fizzle mixed in. The evolution of the fields at breakdown may have been subtly different after the OH1 capacitor was replaced, with the Bz ramp rate slightly increased. The ICRF made some progress conditioning: E-port behaved well; J-port was coming up in power (with many trips) and D-port seemed to get worse during the day (see the session leader's summary for details). Scorecard: Plasmas 13 Fizzles 2 Duds 6 Tests/no power 7 Total cycles 28 |
| Session Leader Comments | |||
| Mar 21 2006 09:43:42:350AM | 1060321001 | Steve Wukitch | dud |
| Mar 21 2006 09:44:13:503AM | 1060321002 | Steve Wukitch | 002 BT~5.4T, Ip=1 MA, nl04=0.8
D: 0.8 MW [1.2,1.5]sec E: 0.8 MW [1.2,1.5]sec J: 0.8->1.6 MW [0.6,1.5]sec result: plasma D: ran 1 fault E: ran J: max faults - poor match next: retune and repeat |
| Mar 21 2006 09:58:16:770AM | 1060321003 | Steve Wukitch | 003 BT~5.4T, Ip=1 MA, nl04=0.8
D: 0.8 MW [1.2,1.5]sec E: 0.8 MW [1.2,1.5]sec J: 0.8->1.6 MW [0.6,1.5]sec result: plasma D: ran 1 fault E: ran J: max faults - J3 match is poor perhaps over corrected next: repeat |
| Mar 21 2006 10:11:13:503AM | 1060321004 | Steve Wukitch | 004 BT~5.4T, Ip=1 MA, nl04=0.8
D: 0.8 MW [1.2,1.5]sec E: 0.8 MW [1.2,1.5]sec J: 0.8->1.6 MW [0.6,1.5]sec result: plasma D: ran 5 faults E: ran J: ran 6 faults next: raise power and repeat |
| Mar 21 2006 10:41:28:443AM | 1060321005 | Steve Wukitch | 005 BT~5.4T, Ip=1 MA, nl04=0.8
D: 1 MW [1.2,1.5]sec E: 1 MW [1.2,1.5]sec J: 0.8->2 MW [0.6,1.5]sec result: plasma D: ran max faults E: ran J: ran max faults next: repeat |
| Mar 21 2006 11:04:18:897AM | 1060321006 | Steve Wukitch | 006 BT~5.4T, Ip=1 MA, nl04=0.8
D: 1 MW [1.2,1.5]sec E: 1 MW [1.2,1.5]sec J: 0.8->2 MW [0.6,1.5]sec result: plasma D: ran max faults E: ran J: ran max faults next: repeat |
| Mar 21 2006 11:26:14:300AM | 1060321007 | Steve Wukitch | 007 BT~5.4T, Ip=1 MA, nl04=0.8
D: 0.8 MW [1.2,1.5]sec E: 1 MW [1.2,1.5]sec J: 0.8->2 MW [0.6,1.5]sec result: plasma D: ran max faults - match? E: ran J: ran max faults - improving in H-mode next: repeat with D isolated from E for 100 msec and new match |
| Mar 21 2006 11:26:34:943AM | 1060321008 | Steve Wukitch | 008 BT~5.4T, Ip=1 MA, nl04=0.8
D: 0.8 MW [1.2,1.5]sec E: 1 MW [1.2,1.5]sec J: 0.8->2 MW [0.6,1.5]sec result: plasma D: ran max faults E: ran J: ran max faults still struggling with E next: retune D |
| Mar 21 2006 11:31:05:410AM | 1060321009 | Steve Wukitch | 009 BT~5.4T, Ip=1 MA, nl04=0.8
D: 0.8 MW [1.2,1.5]sec E: 1 MW [1.2,1.5]sec J: 0.8->2 MW [0.6,1.5]sec result: plasma D: ran max faults yuck! E: ran J: ran max faults double yuck! next: ramp D from 0.3->0.8 MW |
| Mar 21 2006 12:06:05:787PM | 1060321010 | Steve Wukitch | 010 BT~5.4T, Ip=1 MA, nl04=0.8
D: 0.3->0.8 MW [1.1,1.5]sec E: 0.8 MW [1.2,1.5]sec J: 0.8->2 MW [0.6,1.5]sec result: plasma D: ran max faults yuck! E: ran J: ran max faults less yuck! |
| Mar 21 2006 12:05:38:130PM | 1060321011 | Steve Wukitch | 011 BT~5.4T, Ip=1 MA, nl04=0.8
D: 0.3->0.8 MW [1.0,1.5]sec E: 0.8 MW [1.2,1.5]sec J: 0.8->2 MW [0.6,1.5]sec result: plasma D: ran max faults but improved E: ran J: ran max faults progress next: repeat |
| Mar 21 2006 12:21:10:270PM | 1060321012 | Steve Wukitch | fizzle |
| Mar 21 2006 03:16:40:930PM | 1060321014 | Steve Wukitch | no power |
| Mar 21 2006 03:30:29:650PM | 1060321015 | Steve Wukitch | 015 power test |
| Mar 21 2006 03:30:38:790PM | 1060321016 | Steve Wukitch | power test |
| Mar 21 2006 03:30:45:353PM | 1060321017 | Steve Wukitch | power test |
| Mar 21 2006 03:30:50:057PM | 1060321018 | Steve Wukitch | power test |
| Mar 21 2006 03:31:00:697PM | 1060321019 | Steve Wukitch | dud |
| Mar 21 2006 03:31:06:680PM | 1060321020 | Steve Wukitch | dud |
| Mar 21 2006 03:35:27:460PM | 1060321021 | Steve Wukitch | dud |
| Mar 21 2006 03:48:15:777PM | 1060321022 | Steve Wukitch | 022 BT~5.4T, Ip=1 MA, nl04=0.8
D: 0.3->0.8 MW [1.0,1.5]sec E: 1 MW [1.3,1.5]sec J: 0.8->2 MW [0.6,1.5]sec result: plasma D: ran max faults but improved E: ran J: ran max faults - backwards we go next: repeat |
| Mar 21 2006 04:00:41:913PM | 1060321023 | Steve Wukitch | fizzle |
| Mar 21 2006 04:11:59:277PM | 1060321024 | Steve Wukitch | dud |
| Mar 21 2006 04:29:38:853PM | 1060321025 | Steve Wukitch | 025 BT~5.4T, Ip=1 MA, nl04=0.8
D: 0.3->0.8 MW [1.0,1.5]sec E: 1 MW [1.3,1.5]sec J: 0.8->2 MW [0.6,1.5]sec result: plasma D: ran max faults - arcing E: ran J: ran max faults - better next: repeat |
| Mar 21 2006 04:41:19:570PM | 1060321026 | Steve Wukitch | dud |
| Mar 21 2006 04:57:39:587PM | 1060321027 | Steve Wukitch | no power |
| Mar 21 2006 05:09:40:167PM | 1060321028 | Steve Wukitch | 028 BT~5.4T, Ip=1 MA, nl04=0.8
D: 0.3->0.8 MW [1.0,1.5]sec E: 1 MW [1.3,1.5]sec J: 0.8->2 MW [0.6,1.5]sec result: plasma - H modes D: ran max faults - arcing E: ran J: ran max faults - better |
| Physics Operator Comments | |||
| Mar 21 2006 09:20:13:520AM | 1060321001 | Earl Marmar | load from 1060315003 (requested by S.L.)
This was an Upper Single Null shot; however LSN is desired turn off segment 3 (USN) turn on segment 2 (LSN) reduce prefill puff to 20 msec increase nl_04 target to 9e19 dud fields look ok |
| Mar 21 2006 09:42:07:020AM | 1060321002 | Earl Marmar | add 5 msec to prefill puff (now 25 msec)
plasma early hards |
| Mar 21 2006 09:53:19:223AM | 1060321003 | Earl Marmar | no pcs changes
plasma hards are gone target density is lower than on shot 2 |
| Mar 21 2006 10:12:22:100AM | 1060321004 | Earl Marmar | no pcs changes
plasma |
| Mar 21 2006 10:30:22:693AM | 1060321005 | Earl Marmar | no pcs changes
plasma |
| Mar 21 2006 10:47:09:613AM | 1060321006 | Earl Marmar | no pcs changes
plasma |
| Mar 21 2006 11:09:14:007AM | 1060321007 | Earl Marmar | enable argon + neon (B side lower)
50 msec puff starting at 0.3 seconds no pcs changes plasma |
| Mar 21 2006 11:16:46:973AM | 1060321008 | Earl Marmar | no pcs changes
plasma |
| Mar 21 2006 11:30:21:693AM | 1060321009 | Earl Marmar | no pcs changes
plasma |
| Mar 21 2006 11:39:33:050AM | 1060321010 | Earl Marmar | no pcs changes
plasma |
| Mar 21 2006 11:58:34:613AM | 1060321011 | Earl Marmar | no pcs changes
plasma |
| Mar 21 2006 01:32:59:510PM | 1060321012 | Earl Marmar | no pcs changes
fizzle; Bz jumped up by 1.4 mT at t=.005 s It appears that OH1 had a problem right after t=0 (shorted capacitor); the current at 5 ms is about 200 amps more negative than on shot 11; I am happy to blame this for the fizzle. |
| Mar 21 2006 12:42:26:647PM | 1060321013 | Earl Marmar | no pcs changes
plc problem during check OH1 commutation bank is not charging no power shot |
| Mar 21 2006 12:43:02:020PM | 1060321014 | Earl Marmar | no pcs changes
same oh1 commutation bank charging problem no power shot |
| Mar 21 2006 02:29:20:620PM | 1060321015 | Earl Marmar | OH1 test |
| Mar 21 2006 02:49:09:480PM | 1060321016 | Earl Marmar | OH1 test |
| Mar 21 2006 02:49:58:027PM | 1060321017 | Earl Marmar | OH1 test |
| Mar 21 2006 02:52:17:103PM | 1060321018 | Earl Marmar | OH1 test |
| Mar 21 2006 03:05:49:337PM | 1060321019 | Earl Marmar | try for plasma
dud fields look ok fill is a bit lower than on earlier shots |
| Mar 21 2006 03:21:07:337PM | 1060321020 | Earl Marmar | no pcs changes
dud |
| Mar 21 2006 03:40:15:307PM | 1060321021 | Earl Marmar | add 3 ms to prepuff (now 28 msec)
Dud |
| Mar 21 2006 03:54:12:917PM | 1060321022 | Earl Marmar | prefill puff back to 25 msec
EF4 10 amps more negative before t=0 plasma early hards |
| Mar 21 2006 04:03:19:570PM | 1060321023 | Earl Marmar | no pcs changes
fizzle late breakdown |
| Mar 21 2006 04:15:13:883PM | 1060321024 | Earl Marmar | EF4 10 amps less negative before t=0 (back to where it was earlier in the run)
dud |
| Mar 21 2006 04:25:41:977PM | 1060321025 | Earl Marmar | EF4 to -1340 amp before t=0
plasma |
| Mar 21 2006 04:41:59:057PM | 1060321026 | Earl Marmar | reduce prefill puff by 2 msec
dud |
| Mar 21 2006 05:03:16:493PM | 1060321027 | Earl Marmar | add 2 msec to prefill puff
data system hung; no power shot |
| Mar 21 2006 05:05:57:057PM | 1060321028 | Earl Marmar | try again
plasma |
| Engineering Operator Comments | ||||
| Shot | Time | Type | Status | Comment |
| 1 | 09:10:55:253AM | Plasma | Ok | |
| 2 | 09:30:09:457AM | Plasma | Ok | |
| 3 | 09:47:17:460AM | Plasma | Ok | |
| 4 | 10:02:58:143AM | Plasma | Ok | |
| 5 | 10:26:02:910AM | Plasma | Ok | |
| 6 | 10:39:47:270AM | Plasma | Ok | |
| 7 | 10:58:02:440AM | Plasma | Ok | |
| 8 | 11:10:29:393AM | Plasma | Ok | |
| 9 | 11:22:54:350AM | Plasma | Ok | |
| 10 | 11:37:34:847AM | Plasma | Ok | |
| 11 | 11:54:12:600AM | Plasma | Ok | |
| 12 | 12:09:03:270PM | Plasma | Ok | |
| 13 | 12:21:26:910PM | Plasma | Bad | No power shot,OH breaker opened |
| 14 | 12:39:23:723PM | Plasma | Bad | Capacitor bank on OH1 did not charge |
| 15 | 02:26:42:760PM | Test | Ok | oh1 cap bank test |
| 16 | 02:37:43:963PM | Test | Ok | Oh1 Cap Bank Test 500V |
| 17 | 02:44:11:260PM | Test | Ok | OH1 Cap Bank Test 800V |
| 18 | 02:51:47:463PM | Test | Ok | OH1 Cap Bank Test 1000V |
| 19 | 03:01:30:540PM | Plasma | Ok | |
| 20 | 03:16:57:400PM | Plasma | Ok | |
| 21 | 03:29:32:103PM | Plasma | Ok | |
| 22 | 03:41:58:823PM | Plasma | Ok | |
| 23 | 03:57:11:337PM | Plasma | Ok | |
| 24 | 04:09:46:900PM | Plasma | Ok | |
| 25 | 04:22:26:777PM | Plasma | Ok | |
| 26 | 04:38:23:603PM | Plasma | Ok | |
| 27 | 04:52:56:430PM | Plasma | Bad | Act Mon Fault |
| 28 | 05:03:56:400PM | Plasma | Ok | |