| Miniproposals | ||||||||||
|
| Operators | |
| Session leader(s): | Martin Greenwald |
| Physics operator(s): | Dmitri Mossessian |
| Engineering operator(s): | Gary Dekow,Ed Fitzgerald |
| Engineering Operator Run Comment |
| MP#304 H-mode regimes; SL Greenwald; PO Mossessian; EO: Dekow/Fitz |
| Session Leader Plans |
| Physics Operators Plans |
| Session Leader Summaries |
| Entered: Jul 7 2004 03:49:31:633PM |
| Author: To Be Determined |
| Run Summary for 1021031 mp 304 H-mode regimes Session Leader - Greenwald Phys Op - Mossessian ============================ Plan: Given machine constraints, Emphasis will be on the EDA/ELMfree boundary as a function of delta. The hope is that the loose tile will not cause too much trouble. The overall strategy is to pick a triangularity, get an H-mode. If it is EDA, we scan up in current (down in q) till the discharge goes ELMfree. If it is ELMfree, we scan down in current till it goes EDA. Then go to next value of triangularity. - Bt = 5.3 or whatever value it is these days that puts the D&E antennas squarely on the magnetic axis - no power scans - steady power at about 2 MW - start at 1 MA for the high triangularity. we can probably drop the base current as the triangularity is lowered. ============================== Results: pretty good - Most of the run had high radiated power - moly apparently some of the results may be colored by the presence of type III elms we never saw a really good eda - that is with low radiated power but the fluctuation diagnostics saw the qc mode appear and disappear as the parameters were varied. We ran delta_av from .3 to .75 At the lower delta, the EDA/ELMfree boundary was 4.5 ~ 5.5. We tended to see coherent bursts - perhaps some type of ELM when q95 was below 6. These were particularly clear on the magnetics. At the higher triangularities, the qc mode didn't disappear until q was dropped below 4-3.5. This is about the same as the q threshold for our standard delta~0.4. ================================ Shots for further analysis: 1021031004 delta ~ 0.6 q95 ~ 4.3 1021031005 delta ~ 0.6 q95 ~ 3.5 1021031007 delta ~ 0.6 q95 ~ 3.5 1021031011 delta ~ 0.55 q95 ~ 3.4 1021031012 delta ~ 0.55 q95 ~ 4. 1021031013 delta ~ 0.57 q95 ~ 5.3 1021031014 delta ~ 0.57 q95 ~ 5.3 1021031016 delta ~ 0.35 q95 ~ 4.5 1021031017 delta ~ 0.35 q95 ~ 6. 1021031018 delta ~ 036. q95 ~ 6.1 1021031019 delta ~ 0.35 q95 ~ 6. 1021031020 delta ~ 0.31 q95 ~ 6.1 1021031021 delta ~ 0.30 q95 ~ 4.7 1021031022 delta ~ 0.31 q95 ~ 4.7 1021031023 delta ~ 0.30 q95 ~ 4.0 1021031025 delta ~ 0.30 q95 ~ 4.2 1021031026 delta ~ 0.31 q95 ~ 5.3 1021031027 delta ~ 0.31 q95 ~ 5.3 1021031029 delta ~ 0.30 q95 ~ 5.4 1021031030 delta ~ 0.75 q95 ~ 4.3 1021031032 delta ~ 0.70 q95 ~ 3.2 |
| Physics Operator Summaries |
| Entered: Jul 7 2004 04:37:16:740PM |
| Author: To Be Determined |
| Physop summary for 1021031: ---------------------------------------------------------------------------- 1021031xxx mossessian PHYSICS_OPERATOR Oct 31 2002 9:02:31:796AM . . . . . . . . . . . . . . . . . . . . MP#304 H-mode regimes SL Greenwald PO Mossessian Power Systems as on 1021009015 ECDC overnight in D2 at 2e-4 Torr, stopping by 07:00. Run begins at 09:00 and ends at 17:00. Gas setup: fill B-Top with 6 psi D2 Hybrid enabled (PG4) fill B-side lower with 1 psi Ar Hybrid enabled (PG1) fill B-side upper with 10 psi D2 Hybrid DISABLED (PG2) (for ECDC) fill C-side with 30 psi D2 Hybrid enabled (PG3) leave J-Bottom as is Hybrid DISABLED (PG5) Enable the following gate valve, assuming no vacuum problems: DNB,ECE, VUV RF setup - 3 MW from D,E,J Plan: We will study effect of plasma shape on EDA/ELM-free boundary. We'll start with 1021009015 - high triangularity discharge, Ip=0.8, nl=0.8e20 and max reliably available obtain good EDA. Then scan Ip to get q95 scan in H-mode. Scan Ip from 0.8 to 1.5 MA to get to q95 below 3.5. Do current scan at different triangularities. Time permitting, perform current scan in double null configuration. _____________________________________________ Summary: Startup was very good throughout the run. Several high current disruptions did not cause the following fizzle, and small prepuff tweaks were enough to keep plasma running. We had only two fizzles. We started by loading segment 2 from 1021009015 - high triangularity (delta_ave=.7) and did several current scans up to 1.4 MA. It disrupted every time, forcingus to move to lower triangularity. The disruption was caused by sweeping outer strike point hitting the tile in the divertor during current scan. We tried higher delta_lower on the last two shots to keep outer strike point on the inner divertor shelf. It worked on shot 30 but on shot 32 the 1.4 MA plasma touched the inner divertor and disrupted. Total - 32 shots 3 tests 2 fizzles 28 plasmas Details: ---------------------------------------------------------------------------- 1021031003 mossessian PHYSICS_OPERATOR Oct 31 2002 9:05:39:763AM . . . . . . . . . . . . . . . . . . . . First three shots were tests. For the first plasma shot use high triangularity 1021009015, but get rid of curent ramp in H-mode, move current up to 1 MA. Target 1e20. ---------------------------------------------------------------------------- 1021031004 mossessian PHYSICS_OPERATOR Oct 31 2002 9:24:07:250AM . . . . . . . . . . . . . . . . . . . . Plasma. Late breakdown, otherwise a fine startup. RF at 2 MW, trips at 1 s - 2 H-modes. Next shot - ramp current up to 1.4 MA from 0.7 to 1.2 sec ---------------------------------------------------------------------------- 1021031006 mossessian PHYSICS_OPERATOR Oct 31 2002 9:51:29:640AM . . . . . . . . . . . . . . . . . . . . Fizzle. Next shot - pg4 up to 27 ms from 24 ms ---------------------------------------------------------------------------- 1021031007 mossessian PHYSICS_OPERATOR Oct 31 2002 10:15:35:953AM . . . . . . . . . . . . . . . . . . . . Plasma. Disrupts again as soon as current starts ramping down. Next shot - reduce currenmt ramp to 1.3 MA. Drop pg4 to 20 ms for afterdisruption startup. Increase upper triangularity to 0.7 ---------------------------------------------------------------------------- 1021031008 mossessian PHYSICS_OPERATOR Oct 31 2002 10:26:25:890AM . . . . . . . . . . . . . . . . . . . . Plasma. Disrupts at 1.08 s. PO error - I changed RXL instaed of RXU changing lower delta to above 0.8 so the plasma was running on the inner divertor. Next shot - fixed deltas. Move lower back to where it was, change RXU to get 0.7 ---------------------------------------------------------------------------- 1021031009 mossessian PHYSICS_OPERATOR Oct 31 2002 10:41:54:076AM . . . . . . . . . . . . . . . . . . . . Plasma. Disrupts at 1.14 sec, delta_lower=.7, delta_upper=.7 Next shot - move RXL, RXU to make delta_lower=0.6, delta_upper=0.5 ---------------------------------------------------------------------------- 1021031010 mossessian PHYSICS_OPERATOR Oct 31 2002 10:54:02:576AM . . . . . . . . . . . . . . . . . . . . Plasma. Disrupts at 1.2 sec, delta_lower=.6, delta_upper=.6 Next shot - drop RFU 1.5 cm to get to delta_upper=0.5 ---------------------------------------------------------------------------- 1021031011 mossessian PHYSICS_OPERATOR Oct 31 2002 11:07:32:623AM . . . . . . . . . . . . . . . . . . . . Plasma. delta_lower=.6, delta_upper=.5 Next shot - get rid of current ramp -Ip steady at 1 MA ---------------------------------------------------------------------------- 1021031011 mossessian PHYSICS_OPERATOR Oct 31 2002 11:08:44:390AM . . . . . . . . . . . . . . . . . . . . Plasma. delta_lower=.6, delta_upper=.5 Next shot - get rid of current ramp -Ip steady at 1 MA. PG4 20 -> 25 ms ---------------------------------------------------------------------------- 1021031012 mossessian PHYSICS_OPERATOR Oct 31 2002 11:27:27:483AM . . . . . . . . . . . . . . . . . . . . Plasma. Multiple H-mode that look more like ELM-free than EDA Next shot - drop Ip to 0.8 MA. ---------------------------------------------------------------------------- 1021031013 mossessian PHYSICS_OPERATOR Oct 31 2002 11:44:02:436AM . . . . . . . . . . . . . . . . . . . . Plasma. Multiple H-mode that look more like ELM-free than EDA. Next shot - no change ---------------------------------------------------------------------------- 1021031015 mossessian PHYSICS_OPERATOR Oct 31 2002 12:18:16:313PM . . . . . . . . . . . . . . . . . . . . Plasma. In H-mode delta_u=.25, delta_l=.45. Next shot - PG4 to 20 ms ---------------------------------------------------------------------------- 1021031016 mossessian PHYSICS_OPERATOR Oct 31 2002 12:32:17:780PM . . . . . . . . . . . . . . . . . . . . Plasma. Next shot - Ip to 0.6 MA ---------------------------------------------------------------------------- 1021031017 mossessian PHYSICS_OPERATOR Oct 31 2002 1:05:58:436PM . . . . . . . . . . . . . . . . . . . . Plasma. Density feedback did not work. Next shot - repeat ---------------------------------------------------------------------------- 1021031018 mossessian PHYSICS_OPERATOR Oct 31 2002 1:27:44:406PM . . . . . . . . . . . . . . . . . . . . Plasma. Long staedy H-mode Next shot - PG4 up 25 -> 30 ms. RXU + 1 cm trying to get lower delta_u ---------------------------------------------------------------------------- 1021031019 mossessian PHYSICS_OPERATOR Oct 31 2002 1:44:55:483PM . . . . . . . . . . . . . . . . . . . . Plasma. Next shot - RXU up to 4.5 cm, RXL tweak to get constant delta_l, RCUR and CLEARIN in 6 mm ---------------------------------------------------------------------------- 1021031020 mossessian PHYSICS_OPERATOR Oct 31 2002 2:17:11:793PM . . . . . . . . . . . . . . . . . . . . Plasma. EDA with a wide QC mode. Delta_u=0.18 Next shot - Ip to 0.8 MA ---------------------------------------------------------------------------- 1021031021 mossessian PHYSICS_OPERATOR Oct 31 2002 2:17:22:920PM . . . . . . . . . . . . . . . . . . . . Plasma. Next shot - repeat ---------------------------------------------------------------------------- 1021031022 mossessian PHYSICS_OPERATOR Oct 31 2002 2:37:47:966PM . . . . . . . . . . . . . . . . . . . . Plasma. Next shot - Ip up to 0.9 MA ---------------------------------------------------------------------------- 1021031023 mossessian PHYSICS_OPERATOR Oct 31 2002 2:54:44:810PM . . . . . . . . . . . . . . . . . . . . Plasma. Disrupts at 1.4 s. Next shot - RCUR up 5 mm, CLEARIN down 1 cm ---------------------------------------------------------------------------- 1021031024 mossessian PHYSICS_OPERATOR Oct 31 2002 3:10:57:716PM . . . . . . . . . . . . . . . . . . . . Plasma. Outer wall limited. Moved RCUR wrong way. Next shot - RCUR down 5 mm ---------------------------------------------------------------------------- 1021031025 mossessian PHYSICS_OPERATOR Oct 31 2002 3:28:03:026PM . . . . . . . . . . . . . . . . . . . . Plasma. Shape OK Next shot - Ip to 0.7 MA, PG4 up to 35 ms ---------------------------------------------------------------------------- 1021031029 mossessian PHYSICS_OPERATOR Oct 31 2002 4:32:10:830PM . . . . . . . . . . . . . . . . . . . . Plasma. Go to high triangularity - load segment 2 from 1021031009 Next shot - Ip to1 MA, RXL down 2 cm to get to 0.8 delta_l to avoid hitting the tile. ---------------------------------------------------------------------------- 1021031031 mossessian PHYSICS_OPERATOR Oct 31 2002 4:59:03:360PM . . . . . . . . . . . . . . . . . . . . Fizzle. Next shot - lower PG4 to 28 ms, go to 1.4 MA from 0.6 to 1.2 sec ---------------------------------------------------------------------------- 1021031032 mossessian PHYSICS_OPERATOR Oct 31 2002 5:14:58:266PM . . . . . . . . . . . . . . . . . . . . Plasma - |
| Session Leader Comments | |||
| Oct 31 2002 09:06:52:873AM | Martin Greenwald | mp 304 H-mode regimes Session Leader - Greenwald Phys Op - Mossessian ============================ Plan: Given machine constraints, Emphasis will be on the EDA/ELMfree boundary as a function of delta. The hope is that the loose tile will not cause too much trouble. The overall strategy is to pick a triangularity, get an H-mode. If it is EDA, we scan up in current (down in q) till the discharge goes ELMfree. If it is ELMfree, we scan down in current till it goes EDA. Then go to next value of triangularity. - start at the highest triangularity, maybe delta_av = 0.7, then scan to 0.55 and 0.35. - Bt = 5.3 or whatever value it is these days that puts the D&E antennas squarely on the magnetic axis - no power scans - steady power at about 2-2.5 MW - start at 1 MA for the high triangularity. | |
| Oct 31 2002 05:56:14:923PM | Martin Greenwald | Run Summary for 1021031 mp 304 H-mode regimes Session Leader - Greenwald Phys Op - Mossessian ============================ Plan: Given machine constraints, Emphasis will be on the EDA/ELMfree boundary as a function of delta. The hope is that the loose tile will not cause too much trouble. The overall strategy is to pick a triangularity, get an H-mode. If it is EDA, we scan up in current (down in q) till the discharge goes ELMfree. If it is ELMfree, we scan down in current till it goes EDA. Then go to next value of triangularity. - Bt = 5.3 or whatever value it is these days that puts the D&E antennas squarely on the magnetic axis - no power scans - steady power at about 2 MW - start at 1 MA for the high triangularity. we can probably drop the base current as the triangularity is lowered. ============================== Results: pretty good - Most of the run had high radiated power - moly apparently some of the results may be colored by the presence of type III elms we never saw a really good eda - that is with low radiated power but the fluctuation diagnostics saw the qc mode appear and disappear as the parameters were varied. We ran delta_av from .3 to .75 At the lower delta, the EDA/ELMfree boundary was 4.5 ~ 5.5. We tended to see coherent bursts - perhaps some type of ELM when q95 was below 6. These were particularly clear on the magnetics. At the higher triangularities, the qc mode didn't disappear until q was dropped below 4-3.5. This is about the same as the q threshold for our standard delta~0.4. ================================ Shots for further analysis: 1021031004 delta ~ 0.6 q95 ~ 4.3 1021031005 delta ~ 0.6 q95 ~ 3.5 1021031007 delta ~ 0.6 q95 ~ 3.5 1021031011 delta ~ 0.55 q95 ~ 3.4 1021031012 delta ~ 0.55 q95 ~ 4. 1021031013 delta ~ 0.57 q95 ~ 5.3 1021031014 delta ~ 0.57 q95 ~ 5.3 1021031016 delta ~ 0.35 q95 ~ 4.5 1021031017 delta ~ 0.35 q95 ~ 6. 1021031018 delta ~ 036. q95 ~ 6.1 1021031019 delta ~ 0.35 q95 ~ 6. 1021031020 delta ~ 0.31 q95 ~ 6.1 1021031021 delta ~ 0.30 q95 ~ 4.7 1021031022 delta ~ 0.31 q95 ~ 4.7 1021031023 delta ~ 0.30 q95 ~ 4.0 1021031025 delta ~ 0.30 q95 ~ 4.2 1021031026 delta ~ 0.31 q95 ~ 5.3 1021031027 delta ~ 0.31 q95 ~ 5.3 1021031029 delta ~ 0.30 q95 ~ 5.4 1021031030 delta ~ 0.75 q95 ~ 4.3 1021031032 delta ~ 0.70 q95 ~ 3.2 | |
| Oct 31 2002 09:34:44:500AM | 1021031004 | Martin Greenwald | Plasma - two hmode periods pci set only for .005 duration - should be fixed on next shot qc mode seen clearly on reflectometer but density and Prad rising delta = 0.6, q95 = 4.3 |
| Oct 31 2002 09:34:19:750AM | 1021031005 | Martin Greenwald | Good H-mode, current to 1.35 MA, disrupts during rampdown multiple h-modes rf power steady at 2 MW qc mode til 1.1 second, delta = 0.6, q95 down to 3.5 |
| Oct 31 2002 09:44:23:827AM | 1021031006 | Martin Greenwald | fizzle |
| Oct 31 2002 10:12:42:750AM | 1021031007 | Martin Greenwald | multiple h-modes disrupts at 1.26 seconds qc seen on pci, mode disappears at about 1.0 second when q95 ~ 3.5 and delta = 0.6 |
| Oct 31 2002 10:24:14:000AM | 1021031008 | Martin Greenwald | Two h-modes, disrupts at 1.1 sec lower triangularity increased (too much) |
| Oct 31 2002 10:49:02:420AM | 1021031010 | Martin Greenwald | early disruption - too much triangularity maybe - touching inner wall qc mode seen on reflectometer but q95 never got below 4. |
| Oct 31 2002 11:01:26:700AM | 1021031010 | Martin Greenwald | H-mode lost early Prad quite high |
| Oct 31 2002 11:11:52:187AM | 1021031011 | Martin Greenwald | similar to last shot, but delta to 0.55 lost of radiation, multiple h-modes qc mode weak one very late elm-free period at low q ~ 3.4 |
| Oct 31 2002 11:27:00:217AM | 1021031012 | Martin Greenwald | multiple h-modes qc mode seen, but lots of radiation delta ~ 0.55, q95 ~ 4. |
| Oct 31 2002 11:45:12:763AM | 1021031013 | Martin Greenwald | down to 0.8 MA still multiple h-modes and lots of radiation qc mode much stronger than at 1 MA q95 ~ 5.3, delta ~ .57 |
| Oct 31 2002 12:12:14:030PM | 1021031014 | Martin Greenwald | Similar to previous shot |
| Oct 31 2002 12:24:39:420PM | 1021031016 | Martin Greenwald | Dropped triangularity to 0.35 still multiple h-modes qc mode on PCI is very very broad ~ 100 kHz on later h-modes refl sees it as narrow on the first - t < 0.85 q95 ~ 4.5 |
| Oct 31 2002 12:31:18:203PM | 1021031016 | Martin Greenwald | repeat more or less Multiple h-modes, not much loss of density in between pci spectra still very broad reflectometer sees more coherent mode delta ~ 0.35, q95 ~ 4.6 |
| Oct 31 2002 12:56:15:123PM | 1021031017 | Martin Greenwald | drop current to 0.6 MA problem with TCI and density feedback Still - we get an EDA H-mode with very low density ~ 2.5e20 delta ~ 0.35, q95 ~ 6 |
| Oct 31 2002 01:21:46:703PM | 1021031018 | Martin Greenwald | steady h-mode with 200 kHz bursting on the halpha also qc mode bursts on pci and reflectometer delta ~ .36, q95 ~ 6.1 |
| Oct 31 2002 01:37:27:313PM | 1021031019 | Martin Greenwald | Similar to last shot bursty qc mode delta ~ 0.35, q95 ~ 6 |
| Oct 31 2002 01:58:05:093PM | 1021031020 | Martin Greenwald | weak and bursty EDA delta ~ 0.31, q95 ~ 6.1 radiated power lower |
| Oct 31 2002 02:21:44:653PM | 1021031021 | Martin Greenwald | current to 0.8 MA q ~ 4.7, delta ~ 0.3 bursty elm-like things on Halpha only broad feature on pci and refl radiated power up again |
| Oct 31 2002 02:31:27:170PM | 1021031022 | Martin Greenwald | 0.8 MA mixture of bursts and spikes on Halpha delta ~ .31 q95~ 4.7 very broad spectra on PCI hint of eda on reflectometer |
| Oct 31 2002 02:55:17:140PM | 1021031023 | Martin Greenwald | ip to 0.9 MA Faults on the RF (right gap has gone up to 2 cm) Bursts on halpha (and magnetics) very broad pci spectrum weak qc mode on reflectometer still lots of radiation delta ~0.3, q95 ~ 4 |
| Oct 31 2002 03:07:50:717PM | 1021031024 | Martin Greenwald | problem with shape limited on outside elongation dropped to 1.4 delta dropped to 0.25 Lots of bursts on halpha and magnetics again very broad pci spectrum |
| Oct 31 2002 03:39:45:120PM | 1021031026 | Martin Greenwald | current down to 0.7 MA right gap closed down to 0 toward the end of the flat-top looks like qc mode early overtaken by mhd bursts delta ~ 0.31, q95 ~ 5.3 |
| Oct 31 2002 03:57:30:340PM | 1021031027 | Martin Greenwald | very similar to last shot |
| Oct 31 2002 04:19:28:840PM | 1021031028 | Martin Greenwald | no-power test |
| Oct 31 2002 04:47:51:580PM | 1021031030 | Martin Greenwald | back to high triangularity multiple h-modes strong qc mode on reflectometer no signal on pci delta ~ .75, q95 ~ 4.3 |
| Oct 31 2002 04:56:11:437PM | 1021031031 | Martin Greenwald | fizzle |
| Oct 31 2002 05:16:25:173PM | 1021031032 | Martin Greenwald | disrupts early but got up to 1.4 MA ELMfree delta ~ 0.7, q95 ~ 3.2 |
| Physics Operator Comments | |||
| Oct 31 2002 09:02:31:797AM | Dmitri Mossessian | MP#304 H-mode regimes SL Greenwald PO Mossessian Power Systems as on 1021009015 ECDC overnight in D2 at 2e-4 Torr, stopping by 07:00. Run begins at 09:00 and ends at 17:00. Gas setup: fill B-Top with 6 psi D2 Hybrid enabled (PG4) fill B-side lower with 1 psi Ar Hybrid enabled (PG1) fill B-side upper with 10 psi D2 Hybrid DISABLED (PG2) (for ECDC) fill C-side with 30 psi D2 Hybrid enabled (PG3) leave J-Bottom as is Hybrid DISABLED (PG5) Enable the following gate valve, assuming no vacuum problems: DNB,ECE, VUV RF setup - 3 MW from D,E,J Plan: We will study effect of plasma shape on EDA/ELM-free boundary. We'll start with 1021009015 - high triangularity discharge, Ip=0.8, nl=0.8e20 and max reliably available obtain good EDA. Then scan Ip to get q95 scan in H-mode. Scan Ip from 0.8 to 1.5 MA to get to q95 below 3.5. Do current scan at different triangularities. Time permitting, perform current scan in double null configuration. _____________________________________________ Leave segment 1 as on last shot yesterday (PG4 at 24 ms). Load segment 2 from 1021009015. | |
| Oct 31 2002 09:05:39:763AM | 1021031003 | Dmitri Mossessian | First three shots were tests. For the first plasma shot use high triangularity 1021009015, but get rid of curent ramp in H-mode, move current up to 1 MA. Target 1e20. |
| Oct 31 2002 09:24:07:250AM | 1021031004 | Dmitri Mossessian | Plasma. Late breakdown, otherwise a fine startup. RF at 2 MW, trips at 1 s - 2 H-modes. Next shot - ramp current up to 1.4 MA from 0.7 to 1.2 sec |
| Oct 31 2002 09:51:29:640AM | 1021031006 | Dmitri Mossessian | Fizzle. Next shot - pg4 up to 27 ms from 24 ms |
| Oct 31 2002 10:15:35:953AM | 1021031007 | Dmitri Mossessian | Plasma. Disrupts again as soon as current starts ramping down. Next shot - reduce currenmt ramp to 1.3 MA. Drop pg4 to 20 ms for afterdisruption startup. Increase upper triangularity to 0.7 |
| Oct 31 2002 10:26:25:890AM | 1021031008 | Dmitri Mossessian | Plasma. Disrupts at 1.08 s. PO error - I changed RXL instaed of RXU changing lower delta to above 0.8 so the plasma was running on the inner divertor. Next shot - fixed deltas. Move lower back to where it was, change RXU to get 0.7 |
| Oct 31 2002 10:41:54:077AM | 1021031009 | Dmitri Mossessian | Plasma. Disrupts at 1.14 sec, delta_lower=.7, delta_upper=.7 Next shot - move RXL, RXU to make delta_lower=0.6, delta_upper=0.5 |
| Oct 31 2002 10:54:02:577AM | 1021031010 | Dmitri Mossessian | Plasma. Disrupts at 1.2 sec, delta_lower=.6, delta_upper=.6 Next shot - drop RFU 1.5 cm to get to delta_upper=0.5 |
| Oct 31 2002 11:07:32:623AM | 1021031011 | Dmitri Mossessian | Plasma. delta_lower=.6, delta_upper=.5 Next shot - get rid of current ramp -Ip steady at 1 MA |
| Oct 31 2002 11:08:44:390AM | 1021031011 | Dmitri Mossessian | Plasma. delta_lower=.6, delta_upper=.5 Next shot - get rid of current ramp -Ip steady at 1 MA. PG4 20 -> 25 ms |
| Oct 31 2002 11:27:27:483AM | 1021031012 | Dmitri Mossessian | Plasma. Multiple H-mode that look more like ELM-free than EDA Next shot - drop Ip to 0.8 MA. |
| Oct 31 2002 11:44:02:437AM | 1021031013 | Dmitri Mossessian | Plasma. Multiple H-mode that look more like ELM-free than EDA. Next shot - no change |
| Oct 31 2002 12:18:16:313PM | 1021031015 | Dmitri Mossessian | Plasma. In H-mode delta_u=.25, delta_l=.45. Next shot - PG4 to 20 ms |
| Oct 31 2002 12:32:17:780PM | 1021031016 | Dmitri Mossessian | Plasma. Next shot - Ip to 0.6 MA |
| Oct 31 2002 01:05:58:437PM | 1021031017 | Dmitri Mossessian | Plasma. Density feedback did not work. Next shot - repeat |
| Oct 31 2002 01:27:44:407PM | 1021031018 | Dmitri Mossessian | Plasma. Long staedy H-mode Next shot - PG4 up 25 -> 30 ms. RXU + 1 cm trying to get lower delta_u |
| Oct 31 2002 01:44:55:483PM | 1021031019 | Dmitri Mossessian | Plasma. Next shot - RXU up to 4.5 cm, RXL tweak to get constant delta_l, RCUR and CLEARIN in 6 mm |
| Oct 31 2002 02:17:11:793PM | 1021031020 | Dmitri Mossessian | Plasma. EDA with a wide QC mode. Delta_u=0.18 Next shot - Ip to 0.8 MA |
| Oct 31 2002 02:17:22:920PM | 1021031021 | Dmitri Mossessian | Plasma. Next shot - repeat |
| Oct 31 2002 02:37:47:967PM | 1021031022 | Dmitri Mossessian | Plasma. Next shot - Ip up to 0.9 MA |
| Oct 31 2002 02:54:44:810PM | 1021031023 | Dmitri Mossessian | Plasma. Disrupts at 1.4 s. Next shot - RCUR up 5 mm, CLEARIN down 1 cm |
| Oct 31 2002 03:10:57:717PM | 1021031024 | Dmitri Mossessian | Plasma. Outer wall limited. Moved RCUR wrong way. Next shot - RCUR down 5 mm |
| Oct 31 2002 03:28:03:027PM | 1021031025 | Dmitri Mossessian | Plasma. Shape OK Next shot - Ip to 0.7 MA, PG4 up to 35 ms |
| Oct 31 2002 04:32:10:830PM | 1021031029 | Dmitri Mossessian | Plasma. Go to high triangularity - load segment 2 from 1021031009 Next shot - Ip to1 MA, RXL down 2 cm to get to 0.8 delta_l to avoid hitting the tile. |
| Oct 31 2002 04:59:03:360PM | 1021031031 | Dmitri Mossessian | Fizzle. Next shot - lower PG4 to 28 ms, go to 1.4 MA from 0.6 to 1.2 sec |
| Oct 31 2002 05:14:58:267PM | 1021031032 | Dmitri Mossessian | Plasma |
| Engineering Operator Comments | ||||
| Shot | Time | Type | Status | Comment |
| 1 | 07:29:59:813AM | Test | Bad | Cycle Test which hung during store |
| 2 | 08:24:02:467AM | Test | Bad | Cycle Test data system hung during store |
| 3 | 08:40:22:233AM | Test | Ok | Cycle Test |
| 4 | 09:05:05:763AM | Plasma | Ok | |
| 5 | 09:24:35:530AM | Plasma | Ok | |
| 6 | 09:42:46:767AM | Plasma | Ok | |
| 7 | 09:58:28:547AM | Plasma | Ok | |
| 8 | 10:17:16:187AM | Plasma | Ok | |
| 9 | 10:32:11:500AM | Plasma | Ok | |
| 10 | 10:46:54:843AM | Plasma | Ok | |
| 11 | 11:02:19:827AM | Plasma | Ok | |
| 12 | 11:17:37:700AM | Plasma | Ok | |
| 13 | 11:34:05:967AM | Plasma | Ok | |
| 14 | 11:49:18:937AM | Plasma | Ok | |
| 15 | 12:08:51:077PM | Plasma | Ok | |
| 16 | 12:22:23:937PM | Plasma | Ok | |
| 17 | 12:41:29:000PM | Plasma | Ok | |
| 18 | 01:07:31:937PM | Plasma | Ok | |
| 19 | 01:28:17:890PM | Plasma | Ok | |
| 20 | 01:46:25:093PM | Plasma | Ok | |
| 21 | 02:03:17:780PM | Plasma | Ok | |
| 22 | 02:22:57:013PM | Plasma | Ok | |
| 23 | 02:41:29:387PM | Plasma | Ok | |
| 24 | 02:57:31:120PM | Plasma | Ok | |
| 25 | 03:13:45:013PM | Plasma | Ok | |
| 26 | 03:28:43:480PM | Plasma | Ok | |
| 27 | 03:44:29:323PM | Plasma | Ok | |
| 28 | 04:07:41:497PM | Plasma | Bad | I2 T Fault in INIT |
| 29 | 04:22:09:730PM | Plasma | Ok | |
| 30 | 04:39:50:953PM | Plasma | Ok | |
| 31 | 04:54:06:237PM | Plasma | Ok | |
| 32 | 05:07:17:940PM | Plasma | Ok | |