| Miniproposals | ||||||||||
|
| Operators | |
| Session leader(s): | Martin Greenwald |
| Physics operator(s): | Earl Marmar |
| Engineering operator(s): | Unknown |
| Engineering Operator Run Comment |
| Boivin/Marmer |
| Session Leader Plans |
| Physics Operators Plans |
| Session Leader Summaries |
| Entered: Jul 7 2004 03:49:13:303PM |
| Author: To Be Determined |
| Run Plan -------- This run was part of MP 85 - Dimensionless scaling experiments. A continuation of runs on 950302 and 950303. The field was reserved to suppress H-modes at the higher powers. The basic outline of the run are power scans at two fixed densities - nebar = 1.5 and ~3.0 e20 (nel ~ .9 and 1.8). The other conditions are R= .67, a = .22, kappa = 1.7, Ip = 1.02 with a SNB equilibrium. Inner and outer gaps should be about 1 cm. We start with shot 950406036 (the last shot from yesterday), We tweak the density and equilibrium as needed from there, starting with the lower density. We then scan the RF power from its maximum value. When we reach the maximum power at ne = 1.5, we will raise the density to around 3.0 and repeat the power scan. +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Results: A mixed bag. Of 38 attempts, their were only 20 plasmas, 18 that lasted long enough for the RF to fire. (Most of the "good" shots disrupted at the end of flat-top or the beginning of ramp-down. The RF systems seemed to be working well - Prf up to 3.2 MW, Ptot = 4.7 MW on shot 16 Ip, kappa, a and R were near their specified values for all (good) shots. Many disrupted at the end of flattop or early during rampdown. We probably have adequate data at the lower density but nothing really at the higher density. Scorecard: "good" shots 18 (11 with late full-current disruptions) early disruptions - 2 fizzles - 18 Shots suitable for further analysis are: SHOT: 950407001 nebar = 2 ohmic SHOT: 950407004 nebar = 1.4 Prf = .65 MW SHOT: 950407005 nebar = 1.8 Prf = .95 MW SHOT: 950407006 nebar = 1.8 Prf = 1.0 MW (estimated) SHOT: 950407007 nebar = 1.9 Prf = 2.0 MW SHOT: 950407008 nebar = 1.9 Prf = 2.4 MW; (Ptot = 3.6MW) SHOT: 950407009 nebar = 2 Prf = 2.7 MW; but trips early to 1.3 MW (full power for a bit less than .1 sec) SHOT: 950407010 nebar = 1.9 Prf = 1.1 MW; trips on second transmitter SHOT: 950407011 Disrupted early SHOT: 950407013 nebar = 1.9 Prf = 2.5 MW SHOT: 950407014 nebar = 1.8 Prf = 2.7 MW (Ptot = 3.9 MW) SHOT: 950407016 nebar = 2.2 Prf = 3.2 MW; Ptot > 4.5 MW; Wmhhd > .11 MJ SHOT: 950407019 nebar = 1.5 RF power ~1.2 MW (trips) SHOT: 950407021 nebar = 1.6 Prf = 1.5 MW but for only 20 msec SHOT: 950407023 disrupts at end of flattop nebar = 1.6 Prf = 1.5 MW SHOT: 950407025 nebar = 1.7 Ohmic only SHOT: 950407027 Attempt to increase density nebar = 2.6 Prf = 1.3 MW for 80 msec SHOT: 950407033 nebar = 2.4 Prf = 1.4 MW with many trips at higher powers SHOT: 950407038 nebar = 2.6 Only short bursts on RF |
| Physics Operator Summaries |
| Session Leader Comments | |||
| Apr 7 1995 08:37:25:920AM | Martin Greenwald | Run Plan
-------- The basic outline of the run are power scans at two fixed densities - nebar = 1.5 and ~3.0 e20 (nel ~ .9 and 1.8). The other conditions are R= .67, a = .22, kappa = 1.7, Ip = 1.02 with a SNB equilibrium. Inner and outer gaps should be about 1 cm. We start with shot 950406036 (the last shot from yesterday), We tweak the density and equilibrium as needed from there, starting with the lower density. We then scan the RF power from its maximum value. When we reach the maximum power at ne = 1.5, we will raise the density to around 3.0 and repeat the power scan. | |
| Apr 7 1995 08:36:41:700AM | 950407001 | Martin Greenwald | 1 MA disrupts at 1.sec
nl04 = 1.3 no RF yet |
| Apr 7 1995 08:44:21:940AM | 950407002 | Martin Greenwald | fizzle
|
| Apr 7 1995 09:18:31:980AM | 950407003 | Martin Greenwald | fizzle
|
| Apr 7 1995 09:38:24:240AM | 950407004 | Martin Greenwald | Ip reached 1 MA
disrupted on rampdown nl04 = .9 Prf = .65 MW |
| Apr 7 1995 09:49:26:890AM | 950407005 | Martin Greenwald | Good Shot
Ip = 1.05 MA nl06 = 1.0, ne0yag = 1.4 Prf = .95 MW |
| Apr 7 1995 10:06:33:270AM | 950407006 | Martin Greenwald | Good Shot
Ip = 1.05 MA nl06 = 1.0, ne0yag = 1.4 Prf = 1.0 MW (estimated) |
| Apr 7 1995 10:18:18:410AM | 950407007 | Martin Greenwald | Good Shot
Ip = 1.05 MA nl06 = 1.0, ne0yag = 1.4 Prf = 2.0 MW - Te0 almost 4keV |
| Apr 7 1995 10:38:37:890AM | 950407008 | Martin Greenwald | Good Shot
Ip = 1.05 MA nl06 = 1.0, ne0yag = 1.4 Prf = 2.4 MW; (Ptot = 3.6MW) |
| Apr 7 1995 10:47:57:280AM | 950407009 | Martin Greenwald | Good Shot
Ip = 1.05 MA nl06 = 1.0 Prf = 2.7 MW; but trips early (full power for a bit less than .1 sec) |
| Apr 7 1995 11:05:46:350AM | 950407010 | Martin Greenwald | Disrupted
Ip = 1.05 MA nl06 = 1.0 Prf = 1. MW; trips on second transmitter |
| Apr 7 1995 11:22:37:420AM | 950407011 | Martin Greenwald | Disrupted
Ip = 1.05 MA nl06 = 1.0 |
| Apr 7 1995 11:28:35:300AM | 950407012 | Martin Greenwald | fizzle
|
| Apr 7 1995 11:38:56:450AM | 950407013 | Martin Greenwald | Good Shot
Started with some runaways Ip = 1 MA nl = 1. Prf = 2.5 MW |
| Apr 7 1995 11:54:45:810AM | 950407014 | Martin Greenwald | Disrupts on rampdown
Started with some runaways Ip = 1 MA nl = 1. Prf = 2.7 MW |
| Apr 7 1995 12:05:30:570PM | 950407015 | Martin Greenwald | fizzle
|
| Apr 7 1995 12:15:38:890PM | 950407016 | Martin Greenwald | Disrupts at the end of flat-top
Prf = 3.2 MW |
| Apr 7 1995 12:43:48:380PM | 950407017 | Martin Greenwald | fizzle
|
| Apr 7 1995 01:14:26:120PM | 950407019 | Martin Greenwald | Disrupts at end of flattop
RF power ~1.2 MW (trips) Ip = 1 MA |
| Apr 7 1995 01:26:45:290PM | 950407020 | Martin Greenwald | fizzle
|
| Apr 7 1995 01:40:27:140PM | 950407021 | Martin Greenwald | Disrupts at end of flattop
Ip = 1 MA Prf = 1.5 MW but for only 20 msec |
| Apr 7 1995 01:58:12:620PM | 950407022 | Martin Greenwald | fizzle
|
| Apr 7 1995 02:06:53:380PM | 950407022 | Martin Greenwald | disrupts at end of flattop
Ip = 1 MA Prf = 1.4 MW |
| Apr 7 1995 02:07:04:700PM | 950407023 | Martin Greenwald | disrupts at end of flattop
Ip = 1 MA Prf = 1.4 MW |
| Apr 7 1995 02:17:22:690PM | 950407024 | Martin Greenwald | fizzes
|
| Apr 7 1995 02:28:29:320PM | 950407025 | Martin Greenwald | disrupted on rampdown
Ip = 1 MA Ohmic only |
| Apr 7 1995 02:44:44:550PM | 950407026 | Martin Greenwald | fizz
|
| Apr 7 1995 03:03:06:730PM | 950407027 | Martin Greenwald | Attempt to increase density
disrupts during flattop Ip = 1. MA Prf = 1.3 MW for 80 msec |
| Apr 7 1995 03:13:04:180PM | 950407028 | Martin Greenwald | Fizz
|
| Apr 7 1995 03:21:13:440PM | 950407029 | Martin Greenwald | Fizz
|
| Apr 7 1995 03:29:31:720PM | 950407030 | Martin Greenwald | Fizz
|
| Apr 7 1995 03:43:47:600PM | 950407031 | Martin Greenwald | Fizz
|
| Apr 7 1995 04:07:32:710PM | 950407032 | Martin Greenwald | Breakdown but early termination
|
| Apr 7 1995 04:13:35:060PM | 950407033 | Martin Greenwald | Good shot
Ip = 1. MA Prf = 1.4 MW with some higher peaks nel = 1.4 |
| Apr 7 1995 04:19:50:810PM | 950407034 | Martin Greenwald | fizzle
|
| Apr 7 1995 04:36:46:170PM | 950407035 | Martin Greenwald | fizzle
|
| Apr 7 1995 04:36:53:810PM | 950407036 | Martin Greenwald | fizzle
|
| Apr 7 1995 04:44:36:290PM | 950407037 | Martin Greenwald | fizzle
|
| Apr 7 1995 04:57:12:760PM | 950407038 | Martin Greenwald | Disrupts at rampdown
Ip = 1.0 MA Only short bursts on RF |
| Apr 7 1995 05:05:54:250PM | 950407039 | Martin Greenwald | fizzle
|
| Physics Operator Comments | |||
| Apr 7 1995 08:38:00:490AM | 950407001 | Earl Marmar | Start with last shot from yesterday, 950406036, 1MA, but lower nl_04
to 1.2e20. Fill and puff from A-side, D2. Fill 2.0e-5. Plasma; disrupt at 1 s, EF2U hit current limit |
| Apr 7 1995 08:42:38:060AM | 950407002 | Earl Marmar | Lower nl_04 to 0.9e20
increase EF4/EF2 gain to 1 from 0.5 fill 2.2e-5 fizzle |
| Apr 7 1995 09:19:12:360AM | 950407003 | Earl Marmar | fill 2.0 e-5
decrease clearin ramp by 3 mm at 1 s. fizzle |
| Apr 7 1995 09:40:32:560AM | 950407004 | Earl Marmar | fill 2.1 e-5
add 5e-4 Br offset plasma, disrupt at .92 MA |
| Apr 7 1995 09:53:43:620AM | 950407005 | Earl Marmar | fill 2.1 e-5
raise nl_04 to 1.1e20 remove clearin ramp (flat during flat-top) plasma, disrupt at .92 MA |
| Apr 7 1995 09:53:58:400AM | 950407005 | Earl Marmar | fill 2.1 e-5
raise nl_04 to 1.1e20 remove clearin ramp (flat during flat-top) plasma, ramped down all the way |
| Apr 7 1995 10:01:53:510AM | 950407006 | Earl Marmar | fill 2.1 e-5
delay current flat-top by 50 msec add argon tweak zxu (slightly lower) good plasma |
| Apr 7 1995 10:38:28:190AM | 950407007 | Earl Marmar | fill 2.1 e-5
minor clearin tweak good plasma, 2 MW RF, 4keV Te at tops of sawteeth |
| Apr 7 1995 10:38:50:420AM | 950407008 | Earl Marmar | fill 2.1 e-5
good plasma, 2 MW RF |
| Apr 7 1995 10:43:03:160AM | 950407008 | Earl Marmar | was actually 2.4 MW
|
| Apr 7 1995 10:54:57:140AM | 950407009 | Earl Marmar | fill 2.1e-5
jog rcur (out 2 mm between .7 and .9 s) good plasma, 2.7 MW for some time |
| Apr 7 1995 11:13:18:070AM | 950407010 | Earl Marmar | fill 2.1e-5
increase clearin by 5 mm, rcur by 2 mm (try to increase kappa slightly), make the rcur jog at .7 sec into a ramp disrupt at 0.9 s ef2's were oscillating slowly, lost it vertically got the kappa we wanted (1.7) |
| Apr 7 1995 11:21:02:080AM | 950407011 | Earl Marmar | fill 2.1e-5
change ef2/ef4 to ask for 3kA on ef2's disrupted at .9, ef2's hit 4000 A |
| Apr 7 1995 11:40:40:370AM | 950407012 | Earl Marmar | fill 2.1e-5
re-load shot 9 fizzle |
| Apr 7 1995 11:55:42:590AM | 950407012 | Earl Marmar | fill 2.2e-5
plasma, some hards early |
| Apr 7 1995 11:55:56:840AM | 950407013 | Earl Marmar | fill 2.3e-5
plasma |
| Apr 7 1995 11:58:41:200AM | 950407014 | Earl Marmar | fill 2.3e-5
plasma, disrupt at .9 s halo current >200 ka |
| Apr 7 1995 12:05:35:120PM | 950407015 | Earl Marmar | fill 2.1e-5
fizzle |
| Apr 7 1995 12:26:47:470PM | 950407016 | Earl Marmar | fill 2.1e-5
move rxu down by 1 cm plasma, disrupt at end of flat-top, 3.2 MW RF |
| Apr 7 1995 12:53:25:210PM | 950407017 | Earl Marmar | fill 2.1e-5
lower ef2/ef4 gain to .3 at .72 s, Br offset to 0 from +5e-4 fizzle |
| Apr 7 1995 01:02:32:160PM | 950407018 | Earl Marmar | fill 2.2e-5
add 50 to IC_oh1 in segment 1 add 5e-4 offset to Br draw RXU up by 1 cm fizzle |
| Apr 7 1995 01:23:16:450PM | 950407019 | Earl Marmar | fill 2.2e-5
50 more amps on OH1, 5e-4 more offset on Br |
| Apr 7 1995 01:24:38:920PM | 950407019 | Earl Marmar | plasma, disrupt at end of flattop
|
| Apr 7 1995 01:33:20:350PM | 950407020 | Earl Marmar | fill 2.2 e-5
BR_0 offset to 0 fizzle |
| Apr 7 1995 01:50:10:310PM | 950407021 | Earl Marmar | fill 2.2 e-5
BR_0 offset to +1e-3, 20 amp decrease in ef4 lose FSP control, increase zxl propgain after .5 sec plasma, disrupt at 1.05, rf tripped |
| Apr 7 1995 01:55:56:420PM | 950407022 | Earl Marmar | fill 2.2 e-5
BR_0 offset to 1.5e-3, tweak RXU, lower zcur by 3 mm, ZXL by 3 mm fizzle |
| Apr 7 1995 02:15:00:850PM | 950407023 | Earl Marmar | fill 2.2 e-5
BR_0 offset to 1.0e-3 plasma, 1.5 MW rf, disrupt at 1.05 s |
| Apr 7 1995 02:19:54:010PM | 950407024 | Earl Marmar | fill 2.2 e-5
add some RXL propgain after 1 second, 0 strkpsi gain after 1 s fizzle |
| Apr 7 1995 02:37:07:010PM | 950407025 | Earl Marmar | fill 2.2 e-5
no changes no rf (on purpose), disrupt at end of flat-top |
| Apr 7 1995 02:45:58:680PM | 950407026 | Earl Marmar | fill 2.2 e-5
decrease late I_ef4 propgain after 1 s, increase gaps by 5 mm fizzle |
| Apr 7 1995 03:07:50:340PM | 950407027 | Earl Marmar | fill 2.2 e-5
reload segment 1 from 950406036 plasma, disrupt at .9 s |
| Apr 7 1995 03:13:06:820PM | 950407028 | Earl Marmar | fill 2.2 e-5
reload segment 2 from 950407009 increase nl_04 to 1.7e20 fizzle |
| Apr 7 1995 03:21:23:850PM | 950407029 | Earl Marmar | fill 2.2 e-5
no changes fizzle |
| Apr 7 1995 03:40:00:650PM | 950407030 | Earl Marmar | fill 2.2 e-5
B_R offset +1e-3 fizzle |
| Apr 7 1995 03:43:58:610PM | 950407031 | Earl Marmar | fill 2.2 e-5
lower ef1u&l by 200 amp at t=0 fizzle |
| Apr 7 1995 04:00:41:690PM | 950407032 | Earl Marmar | fill 2.2 e-5
add 30 amps to ef4 plasma, disrupt just after crossover. looks like something fell into the plasma (Mo monitor saturates). |
| Apr 7 1995 04:16:37:220PM | 950407033 | Earl Marmar | fill 2.2 e-5
repeat plasma, made it through most of rampdown |
| Apr 7 1995 04:20:21:320PM | 950407034 | Earl Marmar | fill 2.4 e-5
increase nl_04 to 1.9e20, tweak rxl (out) and zxl (down) fizzle |
| Apr 7 1995 04:28:00:700PM | 950407035 | Earl Marmar | fill 2.2 e-5
add 20 amps to ef4 at t=0 fizzle |
| Apr 7 1995 04:39:42:760PM | 950407036 | Earl Marmar | fill 2.2 e-5
subtract 25 amp from ef4 bouncer fizzle |
| Apr 7 1995 04:48:42:040PM | 950407037 | Earl Marmar | fill 2.2 e-5
fizzle bouncer, |
| Apr 7 1995 05:02:46:830PM | 950407038 | Earl Marmar | fill 2.4 e-5
10 amps less in ef4's plasma, disrupt at .95 s |
| Apr 7 1995 05:08:14:540PM | 950407039 | Earl Marmar | fill 2.4 e-5
repeat try fizzle |
| Engineering Operator Comments | ||||
| Shot | Time | Type | Status | Comment |
| 1 | 08:24:51:740AM | Plasma | Ok | no faults |
| 2 | 08:39:50:270AM | Plasma | Ok | no faults |
| 3 | 09:16:07:730AM | Plasma | Ok | no faults |
| 4 | 09:25:48:350AM | Plasma | Ok | no faults |
| 5 | 09:40:26:500AM | Plasma | Ok | no faults |
| 6 | 09:56:51:940AM | Plasma | Ok | no faults |
| 7 | 10:08:52:810AM | Plasma | Ok | no faults |
| 8 | 10:26:00:290AM | Plasma | Ok | no faults |
| 9 | 10:43:43:410AM | Plasma | Ok | no faults |
| 10 | 10:58:57:820AM | Plasma | Ok | No Faults. |
| 11 | 11:14:38:140AM | Plasma | Ok | no faults |
| 12 | 11:26:53:930AM | Plasma | Ok | no faults |
| 13 | 11:34:37:060AM | Plasma | Ok | no faults |
| 14 | 11:50:14:640AM | Plasma | Ok | no faults |
| 15 | 12:03:55:040PM | Plasma | Ok | no faults |
| 16 | 12:11:54:040PM | Plasma | Ok | no faults |
| 17 | 12:42:20:310PM | Plasma | Ok | no faults |
| 18 | 12:56:41:200PM | Plasma | Ok | No faults. |
| 19 | 01:08:32:280PM | Plasma | Ok | No Faults. |
| 20 | 01:25:08:810PM | Plasma | Ok | No faults. |
| 21 | 01:35:14:100PM | Plasma | Ok | No Faults. |
| 22 | 01:51:46:380PM | Plasma | Ok | No Faults. |
| 23 | 02:01:44:000PM | Plasma | Ok | Comm. Fault OH1 & OH2L |
| 24 | 02:15:56:810PM | Plasma | Ok | |
| 25 | 02:23:55:460PM | Plasma | Ok | Comm. Fault OH1, OH2L,and EF1U. |
| 26 | 02:41:07:300PM | Plasma | Ok | No faults. |
| 27 | 02:50:08:500PM | Plasma | Ok | No Faults. |
| 28 | 03:11:25:880PM | Plasma | Ok | No Faults. |
| 29 | 03:19:37:610PM | Plasma | Ok | No faults. |
| 30 | 03:28:03:590PM | Plasma | Ok | No faults. |
| 31 | 03:42:09:040PM | Plasma | Ok | No faults. |
| 32 | 03:51:06:900PM | Plasma | Ok | OH1 IOC fault TYpe 1 |
| 33 | 04:02:54:140PM | Plasma | Ok | No Faults. |
| 34 | 04:18:15:930PM | Plasma | Ok | no faults |
| 35 | 04:26:19:410PM | Plasma | Ok | no faults |
| 36 | 04:34:55:080PM | Plasma | Ok | no faults |
| 37 | 04:43:14:520PM | Plasma | Ok | no faults |
| 38 | 04:52:11:510PM | Plasma | Ok | no faults |
| 39 | 05:04:13:180PM | Plasma | Ok | no faults |