| Miniproposals | ||||||||||
|
| Operators | |
| Session leader(s): | Amanda Hubbard |
| Physics operator(s): | Bill Rowan |
| Engineering operator(s): | Andy Pfeiffer,Gary Dekow,Ed Fitzgerald |
| Engineering Operator Run Comment |
| Run Plan for 1050623: MP 397 Comparison of C-Mod EDA regime with JFT2M H |
| Session Leader Plans |
| Entered: Jun 22 2005 04:28:01:480PM |
| Author: Amanda Hubbard |
| Run Plan for 1050623: MP 397 Comparison of C-Mod EDA regime with
JFT2M HRS regime Session Leader: Amanda Hubbard Physics Operator: Bill Rowan Purpose: This run follows a boronization carried out overnight on 6/21. We aim to complete the q and ne scans for this MP. Specific goals are: 1) Repeat moderately high ne shots in JFT2M shape from 1050407, q95=3.5 (unboronized run), to enable direct comparison with that run, and with 1040416. Expect to reestablish EDA H-mode as in 1040416. 2) Raise q95 to 4.8 (Ip about 655 kA). Carry out density scan, starting at higher densities, with some puffing as needed and tolerated by J-port. Then reduce target ne shot to shot. Establish boundaries for EDA, ELMy and perhaps large ELM operation. 3) Return to q95 = 3.5. Repeat lowest density shots), try to reestablish large ELMs as in 1040416024,26. This would help establish the conditions for later carrying out MP 426 (Hubbard, Terry et al, Structure and stability of Type I ELMs) 4) Fill in some missing points in ne scan at q_95=2.9 Run Plan: 1) Start with shape, density programming from 1050407017, 5.4 T, 900 kA, target 9e19 m-3. Add 3 MW RF. Document H-mode type, fluctuations (hopefully EDA). Compare pedestal density to that of 1040416011 (ne_95=1.85e20 m-3). Adjust target if necessary to match. (3 shots) 2) Lower Ip to 655 kA. Adjust Ip as needed to get q_95=4.8 (3 shots). 3) Density scan. Start by raising ne, puffing during pulse. Then reduce ne shot to shot, to lowest target at which we see H-modes. Step RF during pulse: 2 MW, 3 MW, 4 MW (if avail). Monitor edge pedestals (Edge TS, ECE), edge fluctuations (PCI, reflectometry if available), ELMs (D_alpha, magnetics), radiation profiles (bolos) (~10+ shots). If needed, use between shot ECDC to keep H/D below 5%. 4) Return to q=3.5, low density (target ~4e19 m-2), high power. Spend several shots trying to get large ELMs. If successful, repeat for good ETS data, and get ELM sizes for Jim. 5) Time permitting, go to q_95=2.9, 1.12 MA. Fill in some points on last year's density scan, in particular at high density (target ~1.2 e20 m-2) and power, and at lowest density (target < 6e19 m-3); prior run on 1040416 had a rather limited ne range. |
| Physics Operators Plans |
| Entered: Jun 22 2005 05:23:33:993PM |
| Author: Bill Rowan |
| ngineering setup for Wednesday, 23 June 2005
MP397: Comparison of C-Mod EDA with JFT2M HRS Session leaders: A. Hubbard Physics operator: W. Rowan No overnight ECDC, but bake at 60 C. Run begins at 09:00 and ends at 17:00. Power systems as on 1050407017 (5.4T, 0.9MA) 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 Hybrid DISABLED (PG1) leave B-side upper with whatever Hybrid disabled fill B-main (C-side) with 30 psi D2 Hybrid enabled (PG3) NINJA 10 psi D2 Enable the following gate valves and shutters, assuming no vacuum problems: ECE, VUV, Z-bolo shutters ------------------------------------------------------------------------------- ICRF Setup: All transmitters in run on at 08:30. |
| Session Leader Summaries |
| Entered: Jun 24 2005 02:52:50:130PM |
| Author: Amanda Hubbard |
| Run Summary for 1050623: MP 397 Comparison of C-Mod EDA regime with
JFT2M HRS regime Session Leader: Amanda Hubbard, remote participation from N Oyama, K. Kamiya, at JAERI. Physics Operator: Bill Rowan Purpose: This run follows a boronization carried out overnight on 6/21. We aim to complete the q and ne scans for this MP. Specific goals are: 1) Repeat moderately high ne shots in JFT2M shape from 1050407, q95=3.5 (unboronized run), to enable direct comparison with that run, and with 1040416. Expect to reestablish EDA H-mode as in 1040416. 2) Raise q95 to 4.8 (Ip about 655 kA). Carry out density scan, starting at higher densities, with some puffing as needed and tolerated by J-port. Then reduce target ne shot to shot. Establish boundaries for EDA, ELMy and perhaps large ELM operation. 3) Return to q95 = 3.5. Repeat lowest density shots), try to reestablish large ELMs as in 1040416024,26. This would help establish the conditions for later carrying out MP 426 (Hubbard, Terry et al, Structure and stability of Type I ELMs) 4) Fill in some missing points in ne scan at q_95=2.9 Results: A fairly successful and interesting run. We had time to cover the first three points above. It is worth noting the recent conditioning history: A boronization was carried out overnight on 6/21, followed by a half day of fiducial discharges. However, we covered a smaller area, and with a lesser amount of boron than usual; in retrospect this seems to have been less than optimal for H-mode conditions. Started with q95=3.5, fairly high densities (target ~9e19 m-2). However, this led torather high neutral pressure, and J-port had trouble coupling, leading to low ~ 1 MW powers (shots 1-7), and correspondingly cold edges, frequent back-transitions. Shot 4 did exhibit a distinct, typical QC mode at 130 kHz, though conditions were not completely steady and confinement was poor. Shot 5, which had only 1 MW (very cold edge, Te95 ~300-350 eV) has steady ne but no apparent ELMs or strong coherent mode (a very weak one visible on PCI at ~130 kHz) . The best shot was #7, with a period of 3.5 MW Rf, fairly steady until impurity injections occurred. QC mode was still quite weak. We decided not to spend too many shots at this q95, which was well documented in 1040416. Shots 8-24 were spent on the main objective of the day, a density scan at high q, ~ 630 kA. Target density started at 10^20 m-2 (at which J-port again had difficult staying on),and was progressively reduced to 3e19 m-2 (at which there were large impurity injections, and a delayed H-mode). A few shots (15, 17,18) had lower than programmed ne due to TCI feedback problems. At the higher densities, we got long, steady H-modes which globally looked like EDA, but without a coherent mode visible on PCI - shots 8-14. This deserves more quantitative analysis of fluctuation spectra; by eye, there seemed to be higher than usual levels of broadband turbulence, Shot 16, with lower target nel6e19 m-2, gave the clearest example of a QC mode in this series. At the lower densities (19,20, 21) it became intermittent and the H-modes less steady, as is typical. Labelling the regimes is going to be tricky. Shot 23 was the lowest density sustained H-Mode. After a brief transient, it developed a very cold edge ~300 eV, and small (Type III?) ELMs or dithers; conditions did not seem suitable for reaching pressure limits. Shots 25-33 were spent on Goal 3, revisiting the conditions which had previously produced large ELMs at q_95=3.5, low nu*. While we did not achieve the long, sustained periods of ELMs seen on 1040416, we did achieve transient periods with the needed high pedestal temperatures (~700-800 eV) and low densities (~1.2e20 m-3). Under these conditions, a series of discrete ELMs were reproducibly seen. Good examples are shots 28,29,31 and 33, around 0.76-0.8 seconds. Jim Terry was able to trigger his fast camera on several of these, which bodes well for a future dedicated run. And, Joe Snipes measured clear MHD precursors. Later in these discharges, the edge was much colder, and confinement poor; there were D-alpha spikes but likely not the same cause; probably dithers/back-transitions. But MHD signatures were similar, bears further investigation. The conditions for low nu* were close to the low density limit for H-mode; shots 30 and 32 remained in L-Mode despite 3 MW of RF ; target nebar was ~8e19 m-2 on the L-mode shots. There are many data to analyse, and we hope they will be sufficient to complete MP 397 and the ITPA Intermachine Experiment PEP-12. Results will be presented at the IAEA on H-mode and Transport barriers, St. Petursburg, Sept 2005. Effective remote participation of N. Oyama and K. Kamiya from JAERI (see many logbook comments from them and others), despite the 13 hour time difference (!) is gratefully acknowledged. |
| Physics Operator Summaries |
| Entered: Jun 24 2005 07:41:49:327AM |
| Author: Bill Rowan |
| PhysOp Summary for June 23, 2005; run 1050623
MP397: Comparison of C-Mod EDA with JFT2M HRS Session leaders: A. Hubbard Physics operator: W. Rowan -------------------------------------------------------------------- Engineering Setup No overnight ECDC, but bake at 60 C. Run begins at 09:00 and ends at 17:00. Power systems as on 1050407017 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 Hybrid DISABLED (PG1) leave B-side upper with whatever Hybrid disabled fill B-main (C-side) with 30 psi D2 Hybrid enabled (PG3) NINJA 10 psi D2 Enable the following gate valves and shutters, assuming no vacuum problems: ECE, VUV, Z-bolo shutters -------------------------------------------------------------------- -------------------------------------------------------------------- Results Loaded segment 2 (the plasma for the experiment) from 1050407017. Loaded the segment 1 (breakdown and current rise) from segment 1 of 1050622015, the last full length shot from the day before the run. For MP397, a shape similar to that used for the JFT2M HRS regime was generated. The shape was setup during run 1050407. No changes to the shape were made during the day. For the experiment, the RF target density was scanned for two values of q_95. In addition to MP397, the boron shaker was operated intermittently during the run. The intent was for it to drop boron into the plasma during rampdown. Also, pellets were fired into the rampdown on some shots. A data cycle test before the start of the run indicated problems with the data acquisition system. Due to this, the run started about 40 minutes late. TCI density feedback control failed on a few shots. There were three duds. Only minor changes were made to recover from the duds. Breakdown fields and prefill for each dud was the same as for previous shots in which plasma was produced. There were two shots with disruptions after 1s. Data system cycle test 1 001 Plasma 29 002,003,004,005,006,007,008,010,011,012,013, 014,015,016,017,018,019,020,021,022,024,025, 026,028,029,030(disruption at 1.1s),031, 032(disruption at 1.3s),033 Duds 3 009,023,027 Total 33 |
| Session Leader Comments | |||
| Jun 23 2005 09:12:28:133AM | 1050623001 | Amanda Hubbard | Minor (I hope) delay to sort out computer, shot cycle issues. |
| Jun 23 2005 09:14:13:603AM | 1050623001 | Oyama | We are ready to join the experiment.
Good luck in fixing the problem. |
| Jun 23 2005 09:41:00:270AM | 1050623002 | Amanda Hubbard | Shot OK. RF has trouble coupling (only 1 MW), get short H-modes , low ne rise.
Retune RF, and double-check shape. |
| Jun 23 2005 09:56:00:333AM | 1050623003 | Amanda Hubbard | Shape is good, identical to 1050407. RF still not staying on, only ~0.7 MW sustained.
Note we are getting an ohmic H-mode at 0.57 secs. Followed by a series of short H-modes, with Prad rising rapidly, clear back-transitions which destroy pedestal. This isn't what we were expecting at this condition... Try again for more RF. |
| Jun 23 2005 10:01:14:207AM | 1050623003 | Oyama | Some pulse in Dalpha intensity were observed.
Are they ELMs? or just back transition? |
| Jun 23 2005 10:27:06:143AM | 1050623004 | Amanda Hubbard |
Better, got a longer first H-mode, and 3 MW RF for part of the time though still many trips. Note Prad rise correlated with J-port. Leads to H-L at 0.9 secs. Strong QC mode seen throughout H-mode on PCI. Raise target nel from 0.9 to 1.0e20 m-2 for next shot. |
| Jun 23 2005 10:24:26:957AM | 1050623005 | Amanda Hubbard | Higher ne gave a much longer, steadier H-mode (no ohmic H-mode).
But, J-port did not stay on, (brief 3 MW RF, then 1 MW). As a result, cool edge Te95 240 eV. nel 1.0 to 1.45 e20 m-2, steady. Could be interesting high nu* case. Very weak QC mode compared to previous shot. Repeat for higher RF power. |
| Jun 23 2005 10:36:58:393AM | 1050623006 | Amanda Hubbard | Similar to shot 5. Long, steady H-mode. 1.2 MW from D and E, J does not stay on.
May be a neutral pressure issue. Give it one more try. Weak QC mode, ~ 140 kHz. ne95 3e20 m -2, Te95 ~350 eV. |
| Jun 23 2005 10:54:51:143AM | 1050623007 | Amanda Hubbard | Better RF. First 100 ms had 3.4 MW. Prad was low, and Te95 higher (Te8 450 eV, YAG Te95~350 eV) unitl a big, unexplained injection at 0.79 secs.
Only a weak QC mode again, not sure why given the H-mode quite steady. Next shot: Reduce Ip and target ne, go to h igh q95 part of run since that is what we most want today. |
| Jun 23 2005 11:13:37:253AM | 1050623008 | Amanda Hubbard | First shot at high q. Got 660 kA, q95=4.6
L-H at 0.8 secs. J-port doesn't stay on until then but D+E give steady 1.4 MW. Long, steady H-mode. ne95 1.7e20, te95 300 eV, Te8 400 eV, Te9 290 eV But, no apparent QC mode on PCI. |
| Jun 23 2005 11:44:40:863AM | 1050623010 | Amanda Hubbard | Similar to shot 8. Long H-mode, very wimpy pedestal
Ip=640 kA, but q95 still 4.6. 1.5 MW, nothing from J. Seems to be a neutral pressure issue. Reduce target ne for next shot. ne, Te don't jump much at L-H. ne_95 ~1.7e20 m -2, Te_95~300 eV. No QC mode! |
| Jun 24 2005 12:30:36:187PM | 1050623011 | Amanda Hubbard | Long H-mode, target 8e19 m-2. Brief 3.7 MW, then 1.5 MW.
Steady ne, nebar ~ 2.2e20. QC mode not evident |
| Jun 23 2005 12:02:40:113PM | 1050623012 | Amanda Hubbard | RF better, got up to 4 MW but J still tripping. Te8 gets over 500 eV, Te95 up to 400, transiently.
Once again, ne pretty steady (nel~1.2e20, ne95 1.8e20) but no QC mode. What's controlling it? Seems to be a general increase in bband fluctuation level in H-mode. Lower J power next shot, try to get more steady. |
| Jun 23 2005 12:49:16:490PM | 1050623013 | Amanda Hubbard |
The best shot yet today! Nice steady RF, 3.3 MW, and H-mode, between 0.7 and 0.9 secs. Target nel8e19, H-mode 1.22 m-2. |
| Jun 23 2005 12:39:38:427PM | 1050623014 | Oyama | RF coupling in 013 and 014 seems to be similar.
Do you think that higher target density make RF coupling bad again? |
| Jun 23 2005 02:46:22:333PM | 1050623014 | Amanda Hubbard | Another good one. Quite steady RF, 3.4 MW, and H-mode. Target nel 7e19, H-mode 1.1 m-2.
Steady Te8 570 eV, Te95 ~ 400 eV, ne95 ~1.8e20. |
| Jun 23 2005 01:08:20:097PM | 1050623015 | Amanda Hubbard | Due to feedback prblems, target nel was low, 4e19 m-2.
RF, not surprisingly, was unhappy and tripped. Prad was rising rapidly. Brief bursts of "QC" modes? |
| Jun 23 2005 12:53:06:817PM | 1050623016 | Oyama | More visible QC mode was observed at f~110kHz than 013 and 014.
|
| Jun 23 2005 01:06:54:003PM | 1050623016 | Amanda Hubbard | Good shot. Target 6.5e19 m-2, H-mode 1.05. 3 MW RF. Prad 1.9 MW (2pi foil, steady).
Again, nice steady H-mode, ne_95 ~1.6e20, Te_95 530 to 400. A QC mode is visible for the first time in many shots. One wonders if it may have been masked by a general high turbulence level at higher ne; we'll need to compare spectra to check. |
| Jun 23 2005 01:15:40:050PM | 1050623017 | Amanda Hubbard | More feedback prblems, target nel was low, 2.7 e19 m-2.
RF was pretty good, but there were many impurity injections, not steady. |
| Jun 23 2005 01:30:37:800PM | 1050623018 | Amanda Hubbard | Again, TCI/ feedback prblems, target nel was low, 2.6 e19 m-2.
Big injection early, then fairly steady but little RF (1.5-2 MW, trips), Note we have a series of smallish ELMs. What Type? ne95~10^20 m-3, Te_95 600 to 500 eV. (Higher than usual for Type III, but then the ne is lower than we've tried before). No evident QC mode. |
| Jun 23 2005 01:56:36:643PM | 1050623019 | Amanda Hubbard | Better shot. Got the requested target density of 5e19 m-2.
RF 3 MW but trips, needs to tune. Did seem more ELM-free than shot 16, with some ELMy periods (large ones ~0.8 s, smaller ones from 0.9 to 1.1 secs) In first H-mode, Te8 to 680 eV, Te95 ~600 eV, ne95 ~1.4e20. Later, Te95 to 400 eV. QC mode briefly visible ~0.76 secs, mostly absent. |
| Jun 23 2005 02:00:52:567PM | 1050623020 | Oyama | Intermittent QC mode was observed. |
| Jun 23 2005 02:06:25:003PM | 1050623020 | Amanda Hubbard | Repeat. Target density of 5.5 e19 m-2.
RF 3 MW, fewer trips. First H-mode looks ELM-free, Prad rising, ne rising. H-L at 0.81 when pedestal has eroded. Later, get periodic, unsteady H-modes, maybe a few small ELMs. Still some periods with QC mode visible, though we're likely pushing the low ne limit. Repeat this condition, try for a little more RF to push pressure limit, reduce nu*. |
| Jun 23 2005 02:48:19:037PM | 1050623021 | Amanda Hubbard | Target density of 5.5 e19 m-2. RF 3.7 MW, fewer trips.
First H-mode has hot edge, Te95 ~500 eV, but Prad rising. H transiently ~1.6. Later, get steady 3.7 MW, higher nel but cold edge~350 eV, few small ELMs. QC mode is still visible, stronger in later, colder, period. Reduce target nel next shot, to 4e19 m-2. See if it persists or not. |
| Jun 23 2005 02:37:40:363PM | 1050623022 | Amanda Hubbard | Target density of 4.5 e19 m-2. RF 3 MW, quite steady.
Edge Te briefly rises at L-H transition, but is quickly eroded by rising Prad. Te8 ~470 e, Te95~300 eV, ne95~1.5e20 m-3. Seems to be quasi-steady, Type III ELM regime, not much prospect of raising P to get Type I ELMs. Reduce target further for next shot. |
| Jun 23 2005 03:04:31:143PM | 1050623024 | Amanda Hubbard | Not a pretty plasma. Target 3e19 m-3. Large impurity influxes cool the edge, apparently preventing H-mode until nearly 1 second when ne is higher.
Sawteeth disappear around 0.8 secs, may be a locked mode. This seems to be as low in ne as it is productive to go at this q. Next shot, go back to 900 kA (q=3.5), low density ~5e19 m-2, look for large ELMs. |
| Jun 23 2005 03:23:30:490PM | 1050623025 | Amanda Hubbard |
900 kA, q=3.4. Programmed target ne 5e19, got 6.5. 3 MW, some trips. Initial hot edge (te8 540 eV) , but it cools quickly to near L-mode. Te95 370 eV. There are large D-alpha spikes ~1-1.2 s, but we think they are back-transitions. Also some activity around 0.85 secs. Lower ne some more, pedestals are higher than on 1040416014 |
| Jun 23 2005 03:40:03:630PM | 1050623026 | Amanda Hubbard | 900 kA, q=3.4. Programmed target ne 4e19, got 5.3.
3 MW, some trips. Better. Starts with quite hot edge, and we do get a few ELMs ~0.78 secs that are reminiscent of those on 1040416024. But, edge cools afterward, subsequent ELMs are likely Type III or dithers. Transient H~1.7 in hot period, only ~1.1 later. ne_95~1.7, Te_95 ~500 eV, still denser and cooler than prior large ELMs but closer than shot 25. No QC mode. Bursts of fluctuations in later period. Repeat. |
| Jun 23 2005 04:47:34:207PM | 1050623028 | Oyama | I think that this shot is similar to 1050407019 under pre-bolonized condition in terms of pedestal parameters and behavior of D-alpha intensity.
|
| Jun 24 2005 01:21:10:240PM | 1050623028 | Amanda Hubbard | 900 kA.
Target 5.5e19 m-2. RF 3 MW, one early trip. Te8 briefly 780 eV. ne_95 1.7620 5discrete ELMs in early period, 0.77- 0.8 secs. Te95 800, drops to 400 eV. Leter, higher ne, edge cools, dithering. |
| Jun 24 2005 12:46:32:630PM | 1050623029 | Amanda Hubbard | Target 4.3e19 m-2. Early RF 3 MW. Edge Te starts high, Te95 to 800 eV. Cools to ~ 400 eV for rest of shot, while ne_95 rises.
See a few discrete ELMs in early period, ~ 0.8 secs. Looks more like dithering in later period, when W is much lower. |
| Jun 23 2005 04:25:45:537PM | 1050623030 | Amanda Hubbard | Got target 3.5 e19 m-2. Apparently this is below the low density limit, got clean 3 MW RF but no H-mode. Raise target to level of shot 29. |
| Jun 23 2005 04:41:38:520PM | 1050623031 | Amanda Hubbard | Raised the target, got the H-mode and ELMs back. Joe is seeing clear MHD signals.
Te95 700 eV, ne95 1.4 e20. Repeat for better camera data. |
| Jun 23 2005 04:53:32:550PM | 1050623032 | Amanda Hubbard | Nominally a repeat of shot 31, but no H-mode this time. Must be very close to a limit.
Raise target slightly, repeat for last shot. |
| Jun 23 2005 05:02:07:190PM | 1050623033 | Amanda Hubbard | Last shot is good. Regained H-mode, and ELMs.
No ECE (I missed the gate valve). But Jim got camera data. Te95 to 800 eV |
| Physics Operator Comments | |||
| Jun 23 2005 08:32:07:667AM | Bill Rowan | Loaded 1050407017.
Loaded segment 1 from 1050622015 Load clean | |
| Jun 23 2005 08:42:47:417AM | 1050623001 | Bill Rowan | Cycle test
Igor failure |
| Jun 23 2005 09:13:52:620AM | 1050623001 | Bill Rowan | Delay: computer problems |
| Jun 23 2005 09:40:35:630AM | 1050623002 | Bill Rowan | Plasma
No pcs changes. Will try to improve by increasing RF |
| Jun 23 2005 09:52:42:583AM | 1050623003 | Bill Rowan | Plasma
No pcs changes |
| Jun 23 2005 10:05:47:490AM | 1050623004 | Bill Rowan | Plasma
Next shot: target nl_04 to 1e20 |
| Jun 23 2005 10:22:22:723AM | 1050623005 | Bill Rowan | Plasma
Steady H-mode nl_04 = 1.1e+20 before H-mode Next shot: No pcs changes |
| Jun 23 2005 10:37:26:567AM | 1050623006 | Bill Rowan | Plasma
Next shot: No pcs changes |
| Jun 23 2005 10:49:27:863AM | 1050623007 | Bill Rowan | Plasma
Injection at 0.8s Next shot |
| Jun 23 2005 10:52:17:270AM | 1050623007 | Bill Rowan | Lower nl_04 to 0.9e+20
Lower current to 655 kA. Looking for q95=4.8 |
| Jun 23 2005 11:07:33:707AM | 1050623008 | Bill Rowan | Plasma
nl_04 = 9.3e+19 q95 = 4.6 Next shot. reduce current to 630 kA |
| Jun 23 2005 11:16:05:067AM | 1050623009 | Bill Rowan | Dud
Next shot Increase prepuff from 17 ms to 19 ms |
| Jun 23 2005 11:30:38:753AM | 1050623010 | Bill Rowan | Plasma
Next shot Reduce the current to 610 kA (raise q95) Reduce the density to 8.0e+19 (attempting to reduce neutral pressure for RF) |
| Jun 23 2005 11:44:46:597AM | 1050623011 | Bill Rowan | Plasma
Next shot. Reduced PG3 in segment 2 |
| Jun 23 2005 12:00:44:347PM | 1050623012 | Bill Rowan | Plasma
Neutral pressure reduced Next shot. No PCS changes |
| Jun 23 2005 12:09:02:490PM | 1050623013 | Bill Rowan | Plasma
Next shot. Reduce nl_04 to 0.7e+20 |
| Jun 23 2005 12:31:14:473PM | 1050623014 | Bill Rowan | Plasma
nl_04=7.2e+19 |
| Jun 23 2005 12:33:08:597PM | 1050623014 | Bill Rowan |
Next shot: no pcs changes |
| Jun 23 2005 12:46:04:770PM | 1050623015 | Bill Rowan | Plasma
ne low due to TCI feedback problem Next shot nl_04=0.6e+20 |
| Jun 23 2005 12:52:52:660PM | 1050623016 | Bill Rowan | Plasma
nl_04=6.1e+19 Next shot. nl_04=0.5e+20 |
| Jun 23 2005 01:11:25:317PM | 1050623017 | Bill Rowan | 017.
Plasma ne low due to TCI feedback problem nl_04 = 2.7e+19 Next shot. No pcs changes |
| Jun 23 2005 01:24:54:990PM | 1050623018 | Bill Rowan | 018.
Plasma ne low due to TCI feedback problem nl_04 = 2.8e+19 Next shot. No pcs changes |
| Jun 23 2005 01:49:03:130PM | 1050623019 | Bill Rowan | 019
Plasma Next shot. No pcs changes |
| Jun 23 2005 02:06:46:240PM | 1050623020 | Bill Rowan | 020.
Plasma Next shot. No pcs changes |
| Jun 23 2005 02:17:01:300PM | 1050623021 | Bill Rowan | Plasma
Next shot. nl_04=4.0e+19 |
| Jun 23 2005 02:33:21:113PM | 1050623022 | Bill Rowan | Plasma
Next shot nl_04=3e+19 |
| Jun 23 2005 02:45:02:537PM | 1050623023 | Bill Rowan | Dud
Next shot. Reduce the prefill by 1 ms to 18 ms |
| Jun 23 2005 03:03:09:927PM | 1050623024 | Bill Rowan | Plasma
nl_04 target for RF is 3.1e+19 Next shot reload 1050623007 increase prefill puff to 19 ms reduce nl_04 to 5.0e+19 |
| Jun 23 2005 03:28:25:833PM | 1050623026 | Bill Rowan | Plasma
nl_04=5.0e+19 Next shot No pcs changes |
| Jun 23 2005 03:39:14:677PM | 1050623027 | Bill Rowan | Dud
Next shot. Add 1 ms to prefill. Prefill will be 19 ms |
| Jun 23 2005 03:58:03:740PM | 1050623028 | Bill Rowan | Plasma
disruption at 1.7s (during rampdown) nl_04=4.0e+19 Next shot. nl_04=4.0e+19 |
| Jun 23 2005 04:16:56:143PM | 1050623029 | Bill Rowan | 029
Plasma nl_04=4.6e+19 Next |
| Jun 23 2005 04:28:35:380PM | 1050623030 | Bill Rowan | Plasma. Disruption at 1.1s
nl=4.3e+19 at the start of the RF Next shot. nl=3.0e+19 |
| Jun 23 2005 04:36:13:800PM | 1050623031 | Bill Rowan | Plasma.
nl=3.8e+19 Next shot. No PCS changes |
| Jun 23 2005 04:50:19:893PM | 1050623032 | Bill Rowan | Plasma
Disruption at 1.3s Next shot nl=3.5e+19 |
| Engineering Operator Comments | ||||
| Shot | Time | Type | Status | Comment |
| 1 | 08:37:36:463AM | Test | Ok | |
| 2 | 09:28:26:573AM | Plasma | Ok | |
| 3 | 09:41:54:177AM | Plasma | Ok | |
| 4 | 09:58:00:503AM | Plasma | Ok | |
| 5 | 10:11:46:287AM | Plasma | Ok | |
| 6 | 10:26:20:707AM | Plasma | Ok | |
| 7 | 10:41:40:020AM | Plasma | Ok | |
| 8 | 10:55:10:287AM | Plasma | Ok | |
| 9 | 11:08:50:863AM | Plasma | Ok | |
| 10 | 11:21:21:537AM | Plasma | Ok | |
| 11 | 11:35:37:410AM | Plasma | Ok | |
| 12 | 11:49:02:707AM | Plasma | Ok | |
| 13 | 12:01:57:723PM | Plasma | Ok | |
| 14 | 12:21:37:113PM | Plasma | Ok | |
| 15 | 12:34:17:833PM | Plasma | Ok | |
| 16 | 12:47:33:253PM | Plasma | Ok | |
| 17 | 01:06:14:690PM | Plasma | Ok | |
| 18 | 01:20:38:223PM | Plasma | Ok | |
| 19 | 01:39:56:567PM | Plasma | Ok | |
| 20 | 01:52:26:537PM | Plasma | Ok | |
| 21 | 02:11:06:380PM | Plasma | Ok | |
| 22 | 02:24:30:440PM | Plasma | Ok | |
| 23 | 02:38:28:630PM | Plasma | Ok | |
| 24 | 02:51:06:957PM | Plasma | Ok | |
| 25 | 03:09:16:490PM | Plasma | Ok | |
| 26 | 03:21:47:083PM | Plasma | Ok | |
| 27 | 03:34:07:380PM | Plasma | Ok | |
| 28 | 03:46:35:240PM | Plasma | Ok | |
| 29 | 04:04:47:410PM | Plasma | Ok | |
| 30 | 04:18:04:550PM | Plasma | Ok | |
| 31 | 04:30:39:347PM | Plasma | Ok | |
| 32 | 04:43:55:677PM | Plasma | Ok | |
| 33 | 04:56:41:740PM | Plasma | Ok | |