| Miniproposals | ||||||||||
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| Operators | |
| Session leader(s): | Paul Bonoli,Dmitri Mossessian |
| Physics operator(s): | Bill Rowan |
| Engineering operator(s): | Gary Dekow,Bill Cochran |
| Engineering Operator Run Comment |
| MP 269 ICRF Rotation/MP 271 Pedestal Scaling. Bonoli/Mossessian/Rowan/Co |
| Session Leader Plans |
| Physics Operators Plans |
| Session Leader Summaries |
| Entered: Jul 7 2004 03:49:23:993PM |
| Author: To Be Determined |
| Run Summary for 1000601A - MP 269 ICRF Rotation Session Leader: P. Bonoli Physics Operator: W. Rowan Engineering Operators: G. Dekow/B. Cochran We were unsuccessful in completing this mini-proposal (MP 269). We were frustrated by plasma fizzles and rf power shutdowns on D-port at high toroidal field (6 T). Our objectives were to get high power, ICRF heated H-modes (> 2 MW) at 5.7 T and 6.0 T and measure the toroidal rotation from HIREXjr and sawtooth precursors. We also wanted to go back to low field (4.5T - 4.7T) and reproduce discharges from 1000523 with internal density barrier formation and a reversal in V-tor (as measured by HIREXjr). We successfully made a baseline rotation measurement of V-tor at 5.3 T with 2.2 MW of ICRF power (Shot 4). The stored energy was 95 kJ and V-tor was about 40 km/s from HIREXjr. We also obtained rotation data at 5.7 T on Shot 8, with 2.55 MW of ICRF power. The measured V-tor was still about 40 km/s in the co-current direction with 100 kJ of stored energy. The (H) cyclotron resonance was 5.6 cm to the LFS at 5.7T. At 6.0 T with the (H) resonance located 9.4 cm to the LFS, we could not obtain high power (> 2 MW) H-modes because the D-port transmitter kept on shutting down. We did obtain H-modes however with the 1.1 MW of ICRF power provided by E-port (Shots 10, 12, and 14). The stored energies on these shots were about 75-80 kJ and V-tor was measured to be about 20 km / s from HIREXjr in the co-current direction. Because the rf power was limited, We could not conclusively determine if an ITB could be formed with the ICRF located far off-axis, as was the case at 4.5 T. No evidence of density peaking was found. The values of V-tor measured from sawtooth precursor were consistently higher than those from HIREXjr. The D-port transmitter shutdowns at 6.0 T must be fixed before this mini- proposal is continued. Also, an entire day of run-time should be set aside to do it properly. A shot by shot description of this misery is included below for those who are interested. ---------------------------------------------------------------------------- 1000601001 bonoli SESSION_LEADER Jun 1 2000 8:42:45:686AM . . . . . . . . . . . . . . . . . . . . Shot 1: Get baseline rotation mesaurement at 5.3 T B_o = 5.3 T (flat-top) I_p = 800 kA Ar gas enabled RF (D & E) set to 2 MW Fizzle ---------------------------------------------------------------------------- 1000601002 bonoli SESSION_LEADER Jun 1 2000 9:11:02:653AM . . . . . . . . . . . . . . . . . . . . Shot 2: Get baseline rotation mesaurement at 5.3 T B_o = 5.3 T (flat-top) I_p = 800 kA Ar gas enabled RF (D & E) set to 2 MW Plasma ! Brief EDA H-mode with nl_04 = 1.5 and W = 95 kJ D-port ran well and E-port ran with 1 fatal trip caused by a Mo injection at 0.886 sec. P_rf = 2.15 MW total with both transmitters on. Take shot again. ---------------------------------------------------------------------------- 1000601003 bonoli SESSION_LEADER Jun 1 2000 9:37:05:390AM . . . . . . . . . . . . . . . . . . . . Shot 3: Get baseline rotation mesaurement at 5.3 T B_o = 5.3 T (flat-top) I_p = 800 kA Ar gas enabled RF (D & E) set to 2 MW Fizzle - decrease fill pressure ---------------------------------------------------------------------------- 1000601004 bonoli SESSION_LEADER Jun 1 2000 9:47:12:513AM . . . . . . . . . . . . . . . . . . . . Shot 4: Get baseline rotation mesaurement at 5.3 T B_o = 5.3 T (flat-top) I_p = 800 kA Ar gas enabled RF (D & E) set to 2 MW Plasma! Got full rf power of 2.2 MW (D & E ran) EDA H-mode with W = 97 kJ and H_89 = 1.4 V-tor about 40 km/s from HIREXjr Step up B_o to 5.7T for next shot ---------------------------------------------------------------------------- 1000601005 bonoli SESSION_LEADER Jun 1 2000 10:45:21:513AM . . . . . . . . . . . . . . . . . . . . Shot 5: 5.7 T -> ICRF resonance 5.6 cm to LFS Increase P_rf to 2.75 MW to keep well above H_mode threshold B_o = 5.7 T (flat-top) I_p = 800 kA Ar gas enabled RF (D & E) set to 2.75 MW Fizzle Decrease fill pressure (again) ---------------------------------------------------------------------------- 1000601006 bonoli SESSION_LEADER Jun 1 2000 10:26:09:310AM . . . . . . . . . . . . . . . . . . . . Shot 6: 5.7 T -> ICRF resonance 5.6 cm to LFS Increase P_rf to 2.75 MW to keep well above H_mode threshold B_o = 5.7 T (flat-top) I_p = 800 kA Ar gas enabled RF (D & E) set to 2.75 MW Got plasma, but D-port tripped out at 0.91 sec. E-port survived with a few trips 2.8 MW with both transmitters on Got brief EDA H-mode with 100kJ Retune and drop D-port power by 100 kW. Take shot over ---------------------------------------------------------------------------- 1000601007 bonoli SESSION_LEADER Jun 1 2000 10:44:49:640AM . . . . . . . . . . . . . . . . . . . . Shot 7: 5.7 T -> ICRF resonance 5.6 cm to LFS Reduced ICRF power by about 100 kW and retune B_o = 5.7 T (flat-top) I_p = 800 kA Ar gas enabled RF (D & E) set to 2.75 MW Fizzle - try again ---------------------------------------------------------------------------- 1000601008 bonoli SESSION_LEADER Jun 1 2000 11:09:06:780AM . . . . . . . . . . . . . . . . . . . . Shot 8: 5.7 T -> ICRF resonance 5.6 cm to LFS Reduced ICRF power by about 100 kW and retune B_o = 5.7 T (flat-top) I_p = 800 kA Ar gas enabled RF (D & E) set to 2.65 MW Plasma - Good H-mode with 100 kJ until D-port tripped out at 0.95 sec. P_rf = 2.55 MW with D & E both on. Try 5.7 T again with D-port power reduced by 150 kW and retuned. ---------------------------------------------------------------------------- 1000601009 bonoli SESSION_LEADER Jun 1 2000 11:29:27:903AM . . . . . . . . . . . . . . . . . . . . Shot 9: 5.7 T -> ICRF resonance 5.6 cm to LFS Reduced ICRF power by about 100 kW (again) and retune B_o = 5.7 T (flat-top) I_p = 800 kA Ar gas enabled RF (D & E) set to 2.55 MW Fizzle - Go on to 6 T for next shot. ---------------------------------------------------------------------------- 1000601010 bonoli SESSION_LEADER Jun 1 2000 11:51:12:750AM . . . . . . . . . . . . . . . . . . . . Shot 10: 6.0 T -> ICRF resonance 9.4 cm to LFS Reduced B_Z B_o = 5.88 T (actual) I_p = 800 kA Ar gas enabled RF (D & E) set to 2.5 MW Plasma !, but only half the rf power (D-port shut down). Short H-mode with W = 80 kJ Reduce D-port power by 300 kW -> down to 1.0 MW and take shot over again. ---------------------------------------------------------------------------- 1000601011 bonoli SESSION_LEADER Jun 1 2000 12:08:56:966PM . . . . . . . . . . . . . . . . . . . . Shot 11: 6.0 T -> ICRF resonance 9.4 cm to LFS B_o = 5.88 T (actual) I_p = 800 kA Ar gas enabled RF (D & E) set to 2.2 MW Fizzle -> lower B_z again ---------------------------------------------------------------------------- 1000601012 bonoli SESSION_LEADER Jun 1 2000 1:11:48:420PM . . . . . . . . . . . . . . . . . . . . Shot 12: 6.0 T -> ICRF resonance 9.4 cm to LFS Lower B_z again B_o = 5.88 T (actual) I_p = 800 kA Ar gas enabled RF (D & E) set to 2.2 MW Plasma!, but again D-port shut down. E-port ran well at 1.1 MW Got an H-mode with about 73 kJ V-tor was co-current and about 20 km/s Try next shot again at 6.0T with D-port power reduced to 0.75 MW. ---------------------------------------------------------------------------- 1000601013 bonoli SESSION_LEADER Jun 1 2000 12:53:00:810PM . . . . . . . . . . . . . . . . . . . . Shot 13: 6.0 T -> ICRF resonance 9.4 cm to LFS B_o = 5.88 T (actual) I_p = 800 kA Ar gas enabled RF (D & E) set to (0.75 + 1.1) MW Fizzle Take one more shot at 6.0 T ---------------------------------------------------------------------------- 1000601014 bonoli SESSION_LEADER Jun 1 2000 1:11:14:856PM . . . . . . . . . . . . . . . . . . . . Shot 14: 6.0 T -> ICRF resonance 9.4 cm to LFS B_o = 5.88 T (actual) I_p = 800 kA Ar gas enabled RF (D & E) set to (0.75 + 1.1) MW Plasma! - but D-port shut down again. E-port ran through with 1.1 MW and one trip. Got an H-mode with 82 kJ. V-tor about 20 km/sec from HIREXjr End of mini-proposal for now. ---------------------------------------------------------------------------- 1000601xxx rowan PHYSICS_OPERATOR Jun 1 2000 8:01:59:496AM . . . . . . . . . . . . . . . . . . . . Run Plan and Engineering Setup for 1000601 MP 269 ICRF Rotation/MP 271 Pedestal Scaling Session Leader: P. Bonoli/D. Mossessian Physics Operator: W. Rowan Engineering Operators: G. Dekow/B. Cochran Engineering Setup: Overnight ECDC stopping at 7:00. Run begins at 8:30 and ends at 16:00. Power system setup: Same as for 1000531006 Gas setup: B-Top 6 psi D2 Hybrid Enabled B-side lower 1 psi Argon Hybrid DISABLED C-side 30 psi D2 Hybrid Enabled J-bottom leave as is Hybrid DISABLED The following Gate Valves should be ENABLED, assuming no vacuum problems: ECE, VUV, DNB Run Plan: MP 269. ICRF Rotation 1. Load shot 1000531006. Run a similar shot (5.3 T, 0.8 MA) with 2 MW of ICRF power to establish a baseline. 2. Step B_0 up to 5.7 T. Take 1 or 2 shots. 3. Step B_0 up to 6.0 T. Take 1 or 2 shots. 4. Reduce B_0 to to 4.5 T, 4.7 T, 4.9 T based on feeling of SL |
| Entered: Jul 7 2004 03:49:24:007PM |
| Author: To Be Determined |
Run summary 1000601B MP 271 Pedestal Scaling Session Leader: D. Mossessian Physics Operator: W. Rowan Engineering Operators: G. Dekow/B. Cochran The plan is to continue the current/power scans started on 05/25 and try to get good pedestal measurements at 1MA, 1,2MA and 1.4MA at different vvalues of RF power. The PO plan was: 1. Load shot 1000525002 and change current from 0.8 MA to 1 MA. Take three shots at various RF levels 2. Increase current to 1.2 MA. Take three shots at various RF levels 3. Increase or decrease current based on feeling of SL Run Summary. Again, only a small portion of the MP was completed. We menaged eventually to get some data at 1 MA. However, the edge conditions were apparently very different from 05/25. L-H transitions did not occur on most of the shots untill late in the RF pulse. Possible reason is that after the boronization the antennae injects too much impurities in the edge when turned on and cool the edge down, preventing L-H transition. The H-modes where quite different too. Some of them looked like EDA, but had lots of "grass" on top of H-alpha signal, most of them looked more like type-III ELMy. That undermined somewhat the idea of the scan, which was to compare pedestal parameters at different Ip/RF power keeping all other plasma parameters unchanged. Same dependance of the electron pressure pedestal amplitude and gradient on RF power was observed as on 05/25, but with higher scatter. Also, gradP and P_ped were measured higher at higher Ip (at const input power). At higher RF power values of total gradP higher than 5e6 Pa/m were observed To complete the Ip/RF scan part of the MP271 we need to get reliable data at lower current (0.6MA), preferably repeat 1MA scan with better wall conditions, and run at higher current looking for changes in pedestal parameters when transition to ELM-free regime occurs at low q values. Shots for analysis: 16,17,18,19,20,22,23 |
| Physics Operator Summaries |
| Entered: Jul 7 2004 04:37:11:050PM |
| Author: To Be Determined |
| Run Plan and Engineering Setup for 1000601 MP 269 ICRF Rotation/MP 271 Pedestal Scaling Session Leader: P. Bonoli/D. Mossessian Physics Operator: W. Rowan Engineering Operators: G. Dekow/B. Cochran Engineering Setup: Overnight ECDC stopping at 7:00. Run begins at 8:30 and ends at 16:00. Power system setup: Same as for 1000531006 Gas setup: B-Top 6 psi D2 Hybrid Enabled B-side lower 1 psi Argon Hybrid DISABLED C-side 30 psi D2 Hybrid Enabled J-bottom leave as is Hybrid DISABLED The following Gate Valves should be ENABLED, assuming no vacuum problems: ECE, VUV, DNB Run Plan: MP 269. ICRF Rotation 1. Load shot 1000531006. Run a similar shot (5.3 T, 0.8 MA) with 2 MW of ICRF power to establish a baseline. 2. Step B_0 up to 5.7 T. Take 1 or 2 shots. 3. Step B_0 up to 6.0 T. Take 1 or 2 shots. 4. Reduce B_0 to to 4.5 T or 4.7 T based on feeling of SL MP 271. Pedestal Scaling 1. Load shot 1000525002 and change current from 0.8 MA to 1 MA. Take three shots at various RF levels 2. Increase current to 1.2 MA. Take three shots at various RF levels 3. Increase or decrease current based on feeling of SL Run Summary. The first shot was a fizzle. With no changes, the second shot went as planned. That characterized the first part of the day: every other shot was good. BR, BZ, pressure, and breakdown time did not look that much different for fizzles. This was the judgement of other PhysOps as well. During the morning, I trimmed BZ and prefill downward. Prefill was tending to climb. BZ may have started a bit high. The pressure prior to a fizzle was approximately twice that for a plasma shot. This is interesting, but I do not see how it could be the immediate cause of the fizzles. May indicate something about wall conditioning. When we changed to the second MP, we also changed the shot. An initial problem with current rise, led me (with advice) to significantly reduce the prefill. There were no more fizzles during the day. Details Initial setup. Loaded shot 1000531006 Load at 1-Jun-2000 07:44:36.00 Cold start completed at 8am. Required two tries. Required execution of REMCAM. Enabled B-side lower to provide Ar for Rice's rotation measurements 001. First shot is at 5.3T and is intended as the first shot in a TF scan Fizzle Made no changes for the next shot. One option would have been a reduction in pressure 002. SL likes shots so will proceed. Very similar to reference shot -- 1000531006 003. Another fizzle. BZ/BR appear no different from shot 002 004. Good shot. Reduced prefill by 2 ms. Intend to match pressure for reference shot. 005. Fizzle Increased TF to 5.7 T 006. For this shot, decreased prefill by 1 ms Plasma. Shot ended at approx 1.3 s. Shot end correlates with Bolo spike so conclude that it ended on an impurity injection. 007. Fizzle. Cannot find a difference between this and previous shot. 008. Plasma. 009. For next shot will lower BZ Fizzle 010. For this shot, lowered Bz and changed TF to 6 T at request of SL Plasma 011. Fizzle 012. For this shot, lowered BZ Plasma 013. For this shot, lowered BZ Fizzle 014. For this shot, increased BZ and reduce prefill by 1 ms Plasma Last shot for MP 269 015 Starting MP 271. SL Mossessian Loaded shot 1000523008. Intentional deviation from run plan. Reduced BZ in that shot to the value used on the previous shot today Note that the loaded shot has 21 ms prepuff compared to 22 on shot 014 today. Fizzle 016. For this shot, lowered BR by 0.5 mT and reduced the prepuff by 3 ms. Plasma 017. Inserted TF oscillations for ECE starting at 0.8 and 1.2. Each oscillation is 100 ms long Plasma 018. Plasma 019. Plasma 020. Plasma 021. Plasma. Disabled B-side lower for this shot on request of SL. Suspicion that there is too much Ar in the discharge. Disruption at 0.53s. Spike on Bolo. Something fell in. 022. Plasma 023. Plasma |
| Session Leader Comments | |||
| Jun 1 2000 08:42:45:687AM | 1000601001 | Paul Bonoli | Shot 1: Get baseline rotation mesaurement at 5.3 T B_o = 5.3 T (flat-top) I_p = 800 kA Ar gas enabled RF (D & E) set to 2 MW Fizzle |
| Jun 1 2000 09:11:02:653AM | 1000601002 | Paul Bonoli | Shot 2: Get baseline rotation mesaurement at 5.3 T B_o = 5.3 T (flat-top) I_p = 800 kA Ar gas enabled RF (D & E) set to 2 MW Plasma ! Brief EDA H-mode with nl_04 = 1.5 and W = 95 kJ D-port ran well and E-port ran with 1 fatal trip caused by a Mo injection at 0.886 sec. P_rf = 2.15 MW total with both transmitters on. Take shot again. |
| Jun 1 2000 09:37:05:390AM | 1000601003 | Paul Bonoli | Shot 3: Get baseline rotation mesaurement at 5.3 T B_o = 5.3 T (flat-top) I_p = 800 kA Ar gas enabled RF (D & E) set to 2 MW Fizzle - decrease fill pressure |
| Jun 1 2000 09:47:12:513AM | 1000601004 | Paul Bonoli | Shot 4: Get baseline rotation mesaurement at 5.3 T B_o = 5.3 T (flat-top) I_p = 800 kA Ar gas enabled RF (D & E) set to 2 MW Plasma! Got full rf power of 2.2 MW (D & E ran) EDA H-mode with W = 97 kJ and H_89 = 1.4 V-tor about 40 km/s from HIREXjr Step up B_o to 5.7T for next shot |
| Jun 1 2000 10:45:21:513AM | 1000601005 | Paul Bonoli | Shot 5: 5.7 T -> ICRF resonance 5.6 cm to LFS Increase P_rf to 2.75 MW to keep well above H_mode threshold B_o = 5.7 T (flat-top) I_p = 800 kA Ar gas enabled RF (D & E) set to 2.75 MW Fizzle Decrease fill pressure (again) |
| Jun 1 2000 10:26:09:310AM | 1000601006 | Paul Bonoli | Shot 6: 5.7 T -> ICRF resonance 5.6 cm to LFS Increase P_rf to 2.75 MW to keep well above H_mode threshold B_o = 5.7 T (flat-top) I_p = 800 kA Ar gas enabled RF (D & E) set to 2.75 MW Got plasma, but D-port tripped out at 0.91 sec. E-port survived with a few trips 2.8 MW with both transmitters on Got brief EDA H-mode with 100kJ Retune and drop D-port power by 100 kW. Take shot over |
| Jun 1 2000 10:44:49:640AM | 1000601007 | Paul Bonoli | Shot 7: 5.7 T -> ICRF resonance 5.6 cm to LFS Reduced ICRF power by about 100 kW and retune B_o = 5.7 T (flat-top) I_p = 800 kA Ar gas enabled RF (D & E) set to 2.75 MW Fizzle - try again |
| Jun 1 2000 11:09:06:780AM | 1000601008 | Paul Bonoli | Shot 8: 5.7 T -> ICRF resonance 5.6 cm to LFS Reduced ICRF power by about 100 kW and retune B_o = 5.7 T (flat-top) I_p = 800 kA Ar gas enabled RF (D & E) set to 2.65 MW Plasma - Good H-mode with 100 kJ until D-port tripped out at 0.95 sec. P_rf = 2.55 MW with D & E both on. Try 5.7 T again with D-port power reduced by 150 kW and retuned. |
| Jun 1 2000 11:29:27:903AM | 1000601009 | Paul Bonoli | Shot 9: 5.7 T -> ICRF resonance 5.6 cm to LFS Reduced ICRF power by about 100 kW (again) and retune B_o = 5.7 T (flat-top) I_p = 800 kA Ar gas enabled RF (D & E) set to 2.55 MW Fizzle - Go on to 6 T for next shot. |
| Jun 1 2000 11:51:12:750AM | 1000601010 | Paul Bonoli | Shot 10: 6.0 T -> ICRF resonance 9.4 cm to LFS Reduced B_Z B_o = 5.88 T (actual) I_p = 800 kA Ar gas enabled RF (D & E) set to 2.5 MW Plasma !, but only half the rf power (D-port shut down). Short H-mode with W = 80 kJ Reduce D-port power by 300 kW -> down to 1.0 MW and take shot over again. |
| Jun 1 2000 12:08:56:967PM | 1000601011 | Paul Bonoli | Shot 11: 6.0 T -> ICRF resonance 9.4 cm to LFS B_o = 5.88 T (actual) I_p = 800 kA Ar gas enabled RF (D & E) set to 2.2 MW Fizzle -> lower B_z again |
| Jun 1 2000 01:11:48:420PM | 1000601012 | Paul Bonoli | Shot 12: 6.0 T -> ICRF resonance 9.4 cm to LFS Lower B_z again B_o = 5.88 T (actual) I_p = 800 kA Ar gas enabled RF (D & E) set to 2.2 MW Plasma!, but again D-port shut down. E-port ran well at 1.1 MW Got an H-mode with about 73 kJ V-tor was co-current and about 20 km/s Try next shot again at 6.0T with D-port power reduced to 0.75 MW. |
| Jun 1 2000 12:53:00:810PM | 1000601013 | Paul Bonoli | Shot 13: 6.0 T -> ICRF resonance 9.4 cm to LFS B_o = 5.88 T (actual) I_p = 800 kA Ar gas enabled RF (D & E) set to (0.75 + 1.1) MW Fizzle Take one more shot at 6.0 T |
| Jun 1 2000 01:11:14:857PM | 1000601014 | Paul Bonoli | Shot 14: 6.0 T -> ICRF resonance 9.4 cm to LFS B_o = 5.88 T (actual) I_p = 800 kA Ar gas enabled RF (D & E) set to (0.75 + 1.1) MW Plasma! - but D-port shut down again. E-port ran through with 1.1 MW and one trip. Got an H-mode with 82 kJ. V-tor about 20 km/sec from HIREXjr End of mini-proposal for now. |
| Physics Operator Comments | |||
| Jun 1 2000 08:01:59:497AM | Bill Rowan | Run Plan and Engineering Setup for 1000601 MP 269 ICRF Rotation/MP 271 Pedestal Scaling Session Leader: P. Bonoli/D. Mossessian Physics Operator: W. Rowan Engineering Operators: G. Dekow/B. Cochran Engineering Setup: Overnight ECDC stopping at 7:00. Run begins at 8:30 and ends at 16:00. Power system setup: Same as for 1000531006 Gas setup: B-Top 6 psi D2 Hybrid Enabled B-side lower 1 psi Argon Hybrid DISABLED C-side 30 psi D2 Hybrid Enabled J-bottom leave as is Hybrid DISABLED The following Gate Valves should be ENABLED, assuming no vacuum problems: ECE, VUV, DNB Run Plan: MP 269. ICRF Rotation 1. Load shot 1000531006. Run a similar shot (5.3 T, 0.8 MA) with 2 MW of ICRF power to establish a baseline. 2. Step B_0 up to 5.7 T. Take 1 or 2 shots. 3. Step B_0 up to 6.0 T. Take 1 or 2 shots. 4. Reduce B_0 to to 4.5 T, 4.7 T, 4.9 T based on feeling of SL MP 271. Pedestal Scaling 1. Load shot 1000525002 and change current from 0.8 MA to 1 MA. Take three shots at various RF levels 2. Increase current to 1.2 MA. Take three shots at various RF levels 3. Increase or decrease current based on feeling of SL Loaded shot 1000531006 Load at 1-Jun-2000 07:44:36.00 Cold start completed at 8am | |
| Jun 1 2000 08:21:11:217AM | Bill Rowan | Enabled B-side lower to provide Ar for Rice's rotation measurements | |
| Jun 1 2000 09:03:36:593AM | 1000601001 | Bill Rowan | 001. First shot is at 5.3T and is intended as the first shot in a TF scan Fizzle Made no changes for the next shot. One option would have been a reduction in pressure |
| Jun 1 2000 09:05:55:497AM | 1000601002 | Bill Rowan | 002. SL likes shots so will proceed. Very similar to reference shot -- 1000531006 |
| Jun 1 2000 09:29:29:607AM | 1000601003 | Bill Rowan | 003. Another fizzle. Will reduce gas fill for next shot. Intend to match pressure for reference shot. Reduced prefill by 2 ms. BZ/BR appear no different from shot 002 |
| Jun 1 2000 09:44:05:920AM | 1000601004 | Bill Rowan | 004. Good shot. Next shot: Increase TF to 5.7T |
| Jun 1 2000 10:10:30:437AM | 1000601005 | Bill Rowan | 005. Fizzle Next shot: Decrease prefill by 1 ms |
| Jun 1 2000 10:26:02:200AM | 1000601006 | Bill Rowan | 006. Plasma. Shot ended at approx 1.3 s. Shot end correlates with Bolo spike so conclude that it ended on an impurity injection. No change for next shot. |
| Jun 1 2000 10:50:49:810AM | 1000601007 | Bill Rowan | 007. Fizzle. Cannot find a difference between this and previous shot. No change for next shot. |
| Jun 1 2000 11:04:59:547AM | 1000601008 | Bill Rowan | 008. Plasma. For next shot will lower BZ |
| Jun 1 2000 11:35:33:547AM | 1000601009 | Bill Rowan | 009. Fizzle For next shot, lower Bz change TF to 6 T at request of SL |
| Jun 1 2000 12:16:28:467PM | 1000601011 | Bill Rowan | 011. Fizzle For next shot, lower BZ |
| Jun 1 2000 12:32:06:357PM | 1000601012 | Bill Rowan | 012. Plasma For next shot, lower BZ |
| Jun 1 2000 12:57:38:047PM | 1000601013 | Bill Rowan | 013. Fizzle For next shot, raise BZ and reduce prefill by 1 ms |
| Jun 1 2000 01:03:03:327PM | 1000601014 | Bill Rowan | 014. Plasma End of the shots for MP 269 |
| Jun 1 2000 01:20:25:123PM | 1000601014 | Bill Rowan | 015 Starting MP 271. SL Mossessian Loaded shot 1000523008 Reduced BZ in that shot to the value used on the previous shot today Note that this shot has 21 ms prepuff compared to 22 on shot 014 today. |
| Jun 1 2000 01:40:49:140PM | 1000601015 | Bill Rowan | 015 Starting MP 271. SL Mossessian Loaded shot 1000523008 Reduced BZ in that shot to the value used on the previous shot today Note that this shot has 21 ms prepuff compared to 22 on shot 014 today. Fizzle For the next shot. Lowered BR by 0.5 mT Reduced the prepuff by 3 ms. |
| Jun 1 2000 02:01:04:730PM | 1000601016 | Bill Rowan | 016. Plasma For next shot, inserted TF oscillations for ECE starting at 0.8 and 1.2. Each oscillation is 100 ms long |
| Jun 1 2000 02:18:17:013PM | 1000601017 | Bill Rowan | 017. Plasma For next shot. no changes. |
| Jun 1 2000 02:31:11:497PM | 1000601018 | Bill Rowan | 017. Plasma For next shot. no changes. |
| Jun 1 2000 02:39:42:170PM | 1000601018 | Bill Rowan | 018. Plasma For next shot, no changes |
| Jun 1 2000 02:56:26:230PM | 1000601019 | Bill Rowan | 019. Plasma For next shot, no changes. |
| Jun 1 2000 03:21:38:233PM | 1000601020 | Bill Rowan | 020. Plasma For next shot, no changes |
| Jun 1 2000 03:28:56:607PM | 1000601020 | Bill Rowan | EXCEPT: disabled B-side lower |
| Jun 1 2000 03:43:31:937PM | 1000601021 | Bill Rowan | 021. Plasma. Disruption at 0.53s. Spike on Bolo. Something fell in. For next shot, no changes. |
| Jun 1 2000 04:03:30:687PM | 1000601022 | Bill Rowan | 022. Plasma For next shot , no changes |
| Jun 1 2000 04:13:39:140PM | 1000601023 | Bill Rowan | 023. Plasma |
| Engineering Operator Comments | ||||
| Shot | Time | Type | Status | Comment |
| 1 | 08:39:16:187AM | Plasma | Ok | |
| 2 | 08:59:05:717AM | Plasma | Ok | |
| 3 | 09:18:21:140AM | Plasma | Ok | |
| 4 | 09:38:43:497AM | Plasma | Ok | |
| 5 | 10:00:47:577AM | Plasma | Ok | |
| 6 | 10:16:58:670AM | Plasma | Ok | |
| 7 | 10:39:46:373AM | Plasma | Ok | |
| 8 | 11:00:00:233AM | Plasma | Ok | |
| 9 | 11:25:58:280AM | Plasma | Ok | |
| 10 | 11:42:22:543AM | Plasma | Ok | |
| 11 | 12:05:22:700PM | Plasma | Ok | |
| 12 | 12:21:58:513PM | Plasma | Ok | |
| 13 | 12:44:29:030PM | Plasma | Ok | |
| 14 | 12:59:58:593PM | Plasma | Ok | |
| 15 | 01:27:30:093PM | Plasma | Ok | |
| 16 | 01:44:59:530PM | Plasma | Ok | |
| 17 | 02:06:09:200PM | Plasma | Ok | |
| 18 | 02:28:42:093PM | Plasma | Ok | |
| 19 | 02:49:07:090PM | Plasma | Ok | |
| 20 | 03:09:30:687PM | Plasma | Ok | |
| 21 | 03:31:26:297PM | Plasma | Ok | |
| 22 | 03:49:08:607PM | Plasma | Ok | |
| 23 | 04:11:29:980PM | Plasma | Ok | |