| Miniproposals | ||||||||||
|
| Operators | |
| Session leader(s): | Brian Labombard |
| Physics operator(s): | Jim Irby |
| Engineering operator(s): | Bill Cochran,Ed Fitzgerald,Bill Byford,Bill Parkin,Gary Dekow |
| Engineering Operator Run Comment |
| MP384; SL:Lambombard; PO:Irby; EO:Dekow/Ftiz/Byford |
| Session Leader Plans |
| Physics Operators Plans |
| Session Leader Summaries |
| Entered: Jul 7 2004 03:49:04:180PM |
| Author: Brian Labombard |
| Run Summary for 1040326 Physics Operator: J. Irby Session Leader: B. LaBombard ______________________________________________________________________________ Purpose: Explore relationships between edge plasma flows, magnetic topologies, and the L-H power threshold. This is a continuation from 1040325, focusing on lower-limited and lower x-point topologies. Shot Plan: All shots are 0.8MA, 5.4 tesla discharges. Start: reload from Shot#1040325031 - LIMITED on inner div. nose, running on segment#4 Note: This shot has the following setup: Shot A - Segment#2, a SNL discharge with NORMAL inner divertor nose gap. NL04=0.55e20 Shot B - Segment#3, a SNL discharge with SMALL inner divertor nose gap. NL04=0.55e20 Shot C - Segment#4, a LIMITED discharge on inner divertor nose NL04=0.55e20 Set probe scan times to 0.65, 0.85 and 1.05 seconds. Program RF power ramp of 0.5 to 1.5 MW over time interval 0.95 to 1.5 sec. We will be switching between Shots A,B,C most of the day. ........ Part C. Effect of inner divertor nose recycling on SOL/core momentum coupling - and - Part D. L-H Thresholds in Lower Limited versus Lower Diverted Discharges Start with Shot C and optimize probe scans Cycle through shots A, B, C until a good matched set is achieved. "good match" = clean RF ramp with same NL04 at L-H transition time. Repeat this for NL04=0.9e20 Repeat this for NL04=1.2e20 (or go directly to part E) ........ Part E. (Extra credit) Effect of Inner Gap Repeat Shot A at NL04=0.9e20 with successively reduced inner gaps: 4, 2, 0 mm Map change in L-H threshold powers Record flows => do not scan ISP! ______________________________________________________________________________ Result: A very productive run. We got good data on Parts C,D and E, completing the MP. Parts C and D We ran three equilibria - normal LSN, LSN with separatrix just grazing the inner divertor nose, and discharges limited on the inner divertor nose. L-H transitions were regularly attained in all three. At densities around NL04=0.7 the L-H threshold power was essentially the same. At NL04=1.0 there was some tendency to require more RF power (~1.2 versus ~1.0 MW) for the nose-limited case, but this may not be significant, given the typical shot-to-shot variations. Good flow data were recorded on probes and HIREX. Part E We scanned the inner gap from 15 mm to zero over about 9 shots. The L-H power threshold did not change from the nominal 1 MW until the gap was reduced to under 2 mm. Below this distance, it is a very strong function of gap. An L-H transition was achieved at 2.3 MW and 1.6 mm gap. Anything under 1.6 mm did not go into H-mode at 2.3 MW. Good flow data were recorded for these shots also. Helium was puffed from the inner wall capillary all day with flow data being recorded by the Chromex spectrometer. ______________________________________________________________________________ Detailed Shot log: 01-03 Data system tests. 04- LIMITED on inner divertor nose ASP(+17), FSP(+23.8), ISP => No H-mode, NL04=0.66 05- LIMITED on inner divertor nose ASP(+17), FSP(+23.8), ISP => L-H at 1.15s, 1.0 MW, NL04=0.78 06- LIMITED on inner divertor nose ASP(+17), FSP(+26), ISP => L-H at 1.09s, .84 MW, NL04=0.72 07- SNL, SMALL gap to inner divertor nose ASP(+10), FSP(+12), ISP => L-H near 1.5s, injection, NL04=0.69 08- SNL, SMALL gap to inner divertor nose, ASP(+13), FSP(+14), ISP => L-H at 1.17s, 1.07 MW, NL04=0.68 09- SNL, NORMAL inner divertor nose gap. ASP(+14), FSP(-4), ISP => L-H at 1.18 s, 1.09 MW, NL04=0.75 10- SNL, NORMAL inner divertor nose gap. ASP(+14), FSP(-4), ISP => L-H at 1.25 s, 1.25 MW, NL04=0.67 11- SNL, NORMAL inner divertor nose gap. ASP(+14), FSP(-4), ISP => L-H at 1.11 s, 0.96 MW, NL04=1.0 12- SNL, NORMAL inner divertor nose gap. ASP(+14), FSP(-4), ISP => L-H at 1.15 s, 1.0 MW, NL04=1.0 13- SNL, SMALL inner divertor nose gap. ASP(+13), FSP(+14), ISP => L-H at 1.09 s, 0.95 MW, NL04=0.95 14- SNL, SMALL inner divertor nose gap. ASP(+13), FSP(+14), ISP => L-H at 1.25 s, 1.2 MW, NL04=1.0 15- LIMITED on inner divertor nose ASP(+17), FSP(+26), ISP => L-H at 1.35s, 1.3 MW, NL04=1.0 16- LIMITED on inner divertor nose ASP(+17), FSP(+26), ISP => L-H at 1.32s, 1.2 MW, NL04=1.0 17- SNL, NORMAL inner divertor nose gap. ASP(+14), FSP(-4), ISP => disrupted at 0.67 s 18- SNL, NORMAL inner divertor nose gap. ASP(+14), FSP(-4), ISP => L-H at 1.07 s, 0.75 MW, NL04=0.9, FSP a bit too deep. 19- SNL, NORMAL inner divertor nose gap. ASP(+14), FSP(-4), ISP => L-H at 1.05 s, 0.85 MW, NL04=0.86 20- no power shot 21- LIMITED on inner divertor nose ASP(+17), FSP(+26), ISP => L-H at 1.23s, 1.2 MW, NL04=.97 22- SNL, NORMAL inner divertor nose gap. but REDUCED inner wall gap. ASP(+14), FSP(-4) Inner gap = 12 mm => L-H at 1.17s, 0.95 MW, NL04=.9, FSP a bit deep. 23- SNL, NORMAL inner divertor nose gap. but REDUCED inner wall gap. ASP(+14), FSP(-5) Inner gap = 8 mm. ASP causes disruption. 24- SNL, NORMAL inner divertor nose gap. but REDUCED inner wall gap. ASP(+10), FSP(-5) Inner gap = 6 mm => L-H at 1.19s, 1.0 MW, NL04=0.9 25- SNL, NORMAL inner divertor nose gap. but REDUCED inner wall gap. ASP(+10), FSP(-5) Inner gap = 2 mm => L-H at 1.28s, 1.2 MW, NL04=? no TCI 26- SNL, NORMAL inner divertor nose gap. but REDUCED inner wall gap. ASP(+10), FSP(-5) Inner gap = 2 mm => L-H at 1.28s, 1.1 MW, NL04=1.0, probe positions ok 27- SNL, NORMAL inner divertor nose gap. but REDUCED inner wall gap. ASP(+10), FSP(-5) Inner gap = 0 mm => L-H at 1.28s, 1.4 MW, NL04=1.0, ASP could be deeper 28- SNL, NORMAL inner divertor nose gap. but REDUCED inner wall gap. ASP(+12), FSP(-5) Inner gap = 0 mm => L-H at 1.37s, 1.9 MW, NL04=1.2 goes in H-mod when gap gets larger than zero 29- SNL, NORMAL inner divertor nose gap. but REDUCED inner wall gap. ASP(+12), FSP(-5) Inner gap = 0 mm => L-H at 1.35s, 2.3 MW, NL04=1.16 goes in H-mod when gap gets larger than zero 30- SNL, NORMAL inner divertor nose gap. but REDUCED inner wall gap. ASP(+12), FSP(-5) Inner gap wiggled => L-H at 1.09s, 2.3 MW, NL04=1.12, gap=2 mm and L-H at 1.4s, 2.35 MW, NL04=1.2, gap=1.6 mm |
| Physics Operator Summaries |
| Entered: Jul 7 2004 04:36:49:693PM |
| Author: Jim Irby |
| Engineering Setup for Run 1040326 --- Experiments on Plasma Flows and the L-H Threshold --- MP384 Engineering Operators: Dekow, Fitz, Byford, Parkin, Cochran Session leader: Labombard Physics operator: Irby, Rowan ECDC overnight in D2 at 2e-4 Torr, stopping by 07:00 Run begins at 09:00 and ends at 17:00. Power systems the same as last shot from run 1040325 A-coils should be disabled. Gas setup: fill B-Top with 6 psi D2 Hybrid enabled (PG4) fill B-side lower with 1 psi Ar Hybrid enabled (PG1) leave B-side upper as is Hybrid DISABLED (PG2) fill C-side with 30 psi D2 Hybrid enabled (PG3) Disable NINJA Enable the following gate valves: ECE, VUV, DNB ------------------------------------------------------------------------------- RF Setup: All four transmitters in RUN-ON by 08:00. D and E at 80 MHz J-Port antenna will not be needed ------------------------------------------------------------------------------- Summary ------- First of all, the machine ran extremely well with 100 percent startup during the run. Because of the development work done on run 1040325 it was very easy to generate the plasmas the session leader needed since all that was required was a segment switch and adjustment in density feedback. The PO did forget to tune RCUR to keep the outer gap constant during some early shots, but we did correct this problem later on (after almost losing a probe). RF ran well and provided the power requested. Problems -------- We started out with three data system tests, first plasma on shot 4. The data system problem was related to a crash of the Lowbrid, which may have been related to upgrades made to the system last week. We had an OH2L crowbar on shots 17 and 27 that resulted in disruptions. Bill Cochran believes this problem was related to bad contacts on the OH2L power supply shunts. The contacts have been cleaned and we can hope this problem has been fixed. Tf breaker pulled in check on shot 20, lost shot. Score ----- plasmas 04,05,06,07,08,09,10,11,12,13,14,15,16,17,18,19,21,22,23 24,25,26,27,28,29,30 tests 01,02,03 breaker pull 20 |
| Session Leader Comments | |||
| Mar 26 2004 09:28:59:440AM | 1040326004 | Brian Labombard | Shot 04 LIMITED on inner div. nose, 0.8 MA, 5.4 tesla, No H-mode ASP, FSP, ISP scanning at 0.65, 0.85, 1.05 seconds ASP - ok FSP - ok ISP - ok, 10 mm outside sep. |
| Mar 26 2004 09:45:24:943AM | 1040326005 | Brian Labombard | Shot 05 LIMITED on inner div. nose, 0.8 MA, 5.4 tesla, L-H at 1.15 s, 1.0 MW, NL04=0.78 ASP, FSP, ISP scanning at 0.65, 0.85, 1.05 seconds ASP - ok FSP - ok ISP - ok, 10 mm outside sep. |
| Mar 26 2004 10:05:43:140AM | 1040326006 | Brian Labombard | Shot 06 LIMITED on inner div. nose, 0.8 MA, 5.4 tesla, L-H at 1.09 s, 0.84 MW, NL04=0.72 ASP, FSP, ISP scanning at 0.65, 0.85, 1.05 seconds ASP - ok FSP - ok ISP - ok, 10 mm outside sep. Next shot: go to SMALL gap to inner nose. |
| Mar 26 2004 10:13:59:430AM | 1040326007 | Brian Labombard | Shot 07 LSN, SMALL gap to inner div. nose, 0.8 MA, 5.4 tesla, injection, tiny H-mode late ASP, FSP, ISP scanning at 0.65, 0.85, 1.05 seconds ASP - ok, could be deeper FSP - ok, could be deeper ISP - ok, 3 mm out Next Shot: repeat |
| Mar 26 2004 10:26:53:973AM | 1040326008 | Brian Labombard | Shot 08 LSN, SMALL gap to inner div. nose, 0.8 MA, 5.4 tesla, L-H at 1.17, 1.07 MW, NL04=0.68 ASP, FSP, ISP scanning at 0.65, 0.85, 1.05 seconds ASP - ok FSP - ok ISP - ok, 3 mm out Next Shot: go to LSN with NORMAL gap |
| Mar 26 2004 10:43:25:480AM | 1040326009 | Brian Labombard | Shot 09 LSN, NORMAL gap to inner div. nose, 0.8 MA, 5.4 tesla, L-H at 1.18, 1.09 MW, NL04=0.75 ASP, FSP, ISP scanning at 0.65, 0.85, 1.05 seconds ASP - ok FSP - ok ISP - ok Next Shot: repeat |
| Mar 26 2004 10:55:23:587AM | 1040326010 | Brian Labombard | Shot 10 LSN, NORMAL gap to inner div. nose, 0.8 MA, 5.4 tesla, L-H at 1.25, 1.18 MW, NL04=0.67 ASP, FSP, ISP scanning at 0.65, 0.85, 1.05 seconds ASP - ok FSP - ok ISP - ok Next Shot: change to NL04=0.9 |
| Mar 26 2004 11:11:54:933AM | 1040326011 | Brian Labombard | Shot 11 LSN, NORMAL gap to inner div. nose, 0.8 MA, 5.4 tesla, L-H at 1.11, 0.96 MW, NL04=1.0 ASP, FSP, ISP scanning at 0.65, 0.85, 1.05 seconds ASP - ok FSP - ok ISP - ok Next Shot: Repeat with NL04=0.85 |
| Mar 26 2004 11:26:43:980AM | 1040326012 | Brian Labombard | Shot 12 LSN, NORMAL gap to inner div. nose, 0.8 MA, 5.4 tesla, L-H at 1.15, 1.0 MW, NL04=1.0 ASP, FSP, ISP scanning at 0.65, 0.85, 1.05 seconds ASP - ok FSP - ok ISP - ok Next Shot: go to LSN with SMALL gap to nose |
| Mar 26 2004 11:43:35:550AM | 1040326013 | Brian Labombard | Shot 13 LSN, SMALL gap to inner div. nose, 0.8 MA, 5.4 tesla, L-H at 1.09, 0.95 MW, NL04=0.95 ASP, FSP, ISP scanning at 0.65, 0.85, 1.05 seconds ASP - ok FSP - ok ISP - ok, 4 mm out Next Shot: repeat |
| Mar 26 2004 11:58:20:267AM | 1040326014 | Brian Labombard | Shot 14 LSN, SMALL gap to inner div. nose, 0.8 MA, 5.4 tesla, L-H at 1.25, 1.2 MW, NL04=1.0 ASP, FSP, ISP scanning at 0.65, 0.85, 1.05 seconds ASP - ok FSP - ok ISP - ok, 4 mm out Next Shot: go to LIMITED on inner div. nose |
| Mar 26 2004 12:14:56:130PM | 1040326015 | Brian Labombard | Shot 15 LIMITED on inner div. nose, 0.8 MA, 5.4 tesla, L-H at 1.35, 1.3 MW, NL04=1.0 ASP, FSP, ISP scanning at 0.65, 0.85, 1.05 seconds ASP - ok FSP - ok ISP - ok, 9 mm out Next Shot: repeat |
| Mar 26 2004 12:25:49:940PM | 1040326016 | Brian Labombard | Shot 16 LIMITED on inner div. nose, 0.8 MA, 5.4 tesla, L-H at 1.32, 1.2 MW, NL04=1.0 ASP, FSP, ISP scanning at 0.65, 0.85, 1.05 seconds ASP - ok FSP - ok ISP - ok, 9 mm out Next Shot: go back to LSN, with NORMAL gap |
| Mar 26 2004 12:39:53:723PM | 1040326017 | Brian Labombard | Shot 17 LSN with NORMAL gap to inner div. nose, 0.8 MA, 5.4 tesla, disrupted at 0.67 ASP, FSP, ISP scanning at 0.65, 0.85, 1.05 seconds ASP - ok FSP - ok, but may have been damaged. ISP - ok Next Shot: try again |
| Mar 26 2004 01:16:03:280PM | 1040326018 | Brian Labombard | Shot 18 LSN with NORMAL gap to inner div. nose, 0.8 MA, 5.4 tesla, L-H at 1.07s, 0.75MW, NL04=0.9 RF not clean. ASP, FSP, ISP scanning at 0.65, 0.85, 1.05 seconds ASP - ok FSP - ok, a bit deep ISP - ok Next Shot: repeat |
| Mar 26 2004 01:22:34:957PM | 1040326019 | Brian Labombard | Shot 19 LSN with NORMAL gap to inner div. nose, 0.8 MA, 5.4 tesla, L-H at 1.05s, 0.85MW, NL04=0.86 RF not clean. ASP, FSP, ISP scanning at 0.65, 0.85, 1.05 seconds ASP - ok FSP - ok ISP - ok Next Shot: go back to LIMITED on inner div. nose. |
| Mar 26 2004 02:16:54:020PM | 1040326021 | Brian Labombard | Shot 21 LIMITED on inner div. nose, 0.8 MA, 5.4 tesla, L-H at 1.23s, 1.2MW, NL04=0.97 ASP, FSP, ISP scanning at 0.65, 0.85, 1.05 seconds ASP - ok FSP - ok ISP - ok, 10 mm out Next Shot: go to LSN with NORMAL gap to inner nose but REDUCED inner wall gap |
| Mar 26 2004 02:27:00:377PM | 1040326022 | Brian Labombard | Shot 22 LSN, NORMAL gap on inner div. nose, with REDUCED inner wall gap Inner gap = 12 mm 0.8 MA, 5.4 tesla, L-H at 1.17s, 0.95MW, NL04=0.9 ASP, FSP scanning at 0.65, 0.85, 1.05 seconds ASP - ok FSP - ok, bit deep Next Shot: go to 5 mm gap |
| Mar 26 2004 02:47:49:947PM | 1040326023 | Brian Labombard | Shot 23 LSN, NORMAL gap on inner div. nose, with REDUCED inner wall gap Inner gap = 8 mm 0.8 MA, 5.4 tesla, probe-induced disruption at 1.06 s ASP, FSP scanning at 0.65, 0.85, 1.05 seconds ASP - ok, too deep FSP - ok Next Shot: go to 5 mm gap |
| Mar 26 2004 03:04:08:217PM | 1040326024 | Brian Labombard | Shot 24 LSN, NORMAL gap on inner div. nose, with REDUCED inner wall gap Inner gap = 6 mm 0.8 MA, 5.4 tesla, L-H at 1.19, 1.0MW, NL04=0.9 ASP, FSP scanning at 0.65, 0.85, 1.05 seconds ASP - ok FSP - ok Next Shot: go to 2 mm gap |
| Mar 26 2004 03:18:35:577PM | 1040326025 | Brian Labombard | Shot 25 LSN, NORMAL gap on inner div. nose, with REDUCED inner wall gap Inner gap = 2 mm 0.8 MA, 5.4 tesla, L-H at 1.28s, 1.2MW, NL04=? ASP, FSP scanning at 0.65, 0.85, 1.05 seconds ASP - ok FSP - ok Next Shot: repeat |
| Mar 26 2004 03:32:25:953PM | 1040326026 | Brian Labombard | Shot 26 LSN, NORMAL gap on inner div. nose, with REDUCED inner wall gap Inner gap = 2 mm 0.8 MA, 5.4 tesla, L-H at 1.28s, 1.1MW, NL04=1.0 ASP, FSP scanning at 0.65, 0.85, 1.05 seconds ASP - ok FSP - ok Next Shot: go to 0 mm |
| Mar 26 2004 03:49:53:097PM | 1040326027 | Brian Labombard | Shot 27 LSN, NORMAL gap on inner div. nose, with REDUCED inner wall gap Inner gap = 0 mm 0.8 MA, 5.4 tesla, L-H at 1.28s, 1.4MW, NL04=1.0 ASP, FSP scanning at 0.65, 0.85, 1.05 seconds ASP - ok FSP - ok Next Shot: repeat, ASP deeper |
| Mar 26 2004 04:16:23:220PM | 1040326028 | Brian Labombard | Shot 28 LSN, NORMAL gap on inner div. nose, with REDUCED inner wall gap Inner gap = 0 mm 0.8 MA, 5.4 tesla, L-H at 1.37s, 1.9MW, NL04=1.2, when gap increases from zero. ASP, FSP scanning at 0.65, 0.85, 1.05 seconds ASP - ok FSP - ok Next Shot: repeat, more RF power |
| Mar 26 2004 05:05:51:193PM | 1040326029 | Brian Labombard | Shot 29 LSN, NORMAL gap on inner div. nose, with REDUCED inner wall gap Inner gap = 0 mm 0.8 MA, 5.4 tesla, L-H at 1.35s, 2.3MW, NL04=1.16, when gap increases from zero. ASP, FSP scanning at 0.65, 0.85, 1.05 seconds ASP - ok FSP - ok Next Shot: repeat, square RF power program with wiggle in inner gap. |
| Mar 26 2004 05:14:47:217PM | 1040326030 | Brian Labombard | Shot 30 LSN, NORMAL gap on inner div. nose, with REDUCED inner wall gap Inner gap = wiggled 0.8 MA, 5.4 tesla, L-H at 1.09s, 2.3MW, NL04=1.12, gap=2mm L-H at 1.4s, 2.3MW, NL04=1.2, gap=1.6mm ASP, FSP scanning at 0.65, 0.85, 1.05 seconds ASP - ok FSP - ok |
| Physics Operator Comments | |||
| Mar 26 2004 07:31:14:243AM | Jim Irby | Engineering Setup for Run 1040326 --- Experiments on Plasma Flows and the L-H Threshold --- MP384 Session leader: Labombard Physics operator: Irby ECDC overnight in D2 at 2e-4 Torr, stopping by 07:00 Run begins at 09:00 and ends at 17:00. Power systems the same as last shot from run 1040325 A-coils should be disabled. Gas setup: fill B-Top with 6 psi D2 Hybrid enabled (PG4) fill B-side lower with 1 psi Ar Hybrid enabled (PG1) leave B-side upper as is Hybrid DISABLED (PG2) fill C-side with 30 psi D2 Hybrid enabled (PG3) Disable NINJA Enable the following gate valves: ECE, VUV, DNB ------------------------------------------------------------------------------- RF Setup: All four transmitters in RUN-ON by 08:00. D and E at 80 MHz J-Port antenna will not be needed ------------------------------------------------------------------------------- | |
| Mar 26 2004 07:45:43:137AM | Jim Irby | Run Plan Prepared by Brian: Purpose: Explore relationships between edge plasma flows, magnetic topologies, and the L-H power threshold. This is a continuation from 1040325, focusing on lower-limited and lower x-point topologies. Shot Plan: All shots are 0.8MA, 5.4 tesla discharges. Start: reload from Shot#1040325031 - LIMITED on inner div. nose, running on segment#3 Note: This shot has the following setup: Shot A - Segment#2, a SNL discharge with NORMAL inner divertor nose gap. NL04=0.55e20 Shot B - Segment#3, a SNL discharge with SMALL inner divertor nose gap. NL04=0.55e20 Shot C - Segment#4, a LIMITED discharge on inner divertor nose NL04=0.55e20 Set probe scan times to 0.65, 0.85 and 1.05 seconds. Program RF power ramp of 0.5 to 1.5 MW over time interval 0.95 to 1.5 sec. We will be switching between Shots A,B,C most of the day. ........ Part C. Effect of inner divertor nose recycling on SOL/core momentum coupling - and - Part D. L-H Thresholds in Lower Limited versus Lower Diverted Discharges Start with Shot C and optimize probe scans Cycle through shots A, B, C until a good matched set is achieved. "good match" = clean RF ramp with same NL04 at L-H transition time. Repeat this for NL04=0.9e20 Repeat this for NL04=1.2e20 (or go directly to part E) ........ Part E. (Extra credit) Effect of Inner Gap Repeat Shot A at NL04=0.9e20 with successively reduced inner gaps: 4, 2, 0 mm Map change in L-H threshold powers Record flows => do not scan ISP! | |
| Mar 26 2004 09:09:02:713AM | 1040326001 | Jim Irby | Loaded shot 1040325031, seg #4 (SNL, 800kA, 5.4T, RXL -0.05) Several bugs have been found in the TF scanner that should be fixed today. Data system test |
| Mar 26 2004 09:09:19:557AM | 1040326002 | Jim Irby | Data system test |
| Mar 26 2004 09:09:34:060AM | 1040326003 | Jim Irby | data system test |
| Mar 26 2004 09:27:59:627AM | 1040326004 | Jim Irby | Added 2 ms to prepuff. Gas looked low from no power tests. Good shot ---- plasma into rampdown No h-mode, density higher than programmed and higher than shot 33 from yesterday |
| Mar 26 2004 09:43:38:393AM | 1040326005 | Jim Irby | Repeat and how density is under control this time Plasma Better density control |
| Mar 26 2004 09:59:12:817AM | 1040326006 | Jim Irby | Repeat. Brian wants to see the density drop more. Good shot Density down a little more and very close to 1040325033 |
| Mar 26 2004 10:19:31:497AM | 1040326007 | Jim Irby | Reduced prepuff by 1 ms Changed to segment #3 ( RXL from -.05 to -.03) Good shot |
| Mar 26 2004 10:25:55:800AM | 1040326008 | Jim Irby | Repeat Got nice h-mode --- Brian is happy |
| Mar 26 2004 10:42:55:510AM | 1040326009 | Jim Irby | Switched to segment #2 (normal inner nose gap) Good plasma |
| Mar 26 2004 10:55:34:460AM | 1040326010 | Jim Irby | Increased prepuff by 1 ms Good shot |
| Mar 26 2004 11:08:16:040AM | 1040326011 | Jim Irby | nl_04 from 5.5 to 9.0e19 /m^2 --- staying with segment #2 Good plasma |
| Mar 26 2004 11:22:45:837AM | 1040326012 | Jim Irby | Density request to 8.5e19/m^2 on nl04 --- staying with segment #2 Plasma |
| Mar 26 2004 11:43:40:140AM | 1040326013 | Jim Irby | Moved to segment #3, redrew density for 8.5e19/m^2 Plasma into rampdown |
| Mar 26 2004 11:52:11:900AM | 1040326014 | Jim Irby | Repeat Good shot |
| Mar 26 2004 12:05:30:870PM | 1040326015 | Jim Irby | going to segment #4 at nl04 of 8.5e19/m^2 good shot |
| Mar 26 2004 12:24:53:767PM | 1040326016 | Jim Irby | repeat good plasma |
| Mar 26 2004 12:46:04:917PM | 1040326017 | Jim Irby | back to seg 2 at 8.5e19/m^2 Disruption at 0.67 s OH2L crowbar --- going into power room to check fuses, etc. |
| Mar 26 2004 01:03:55:593PM | 1040326018 | Jim Irby | reduced prepuff by 1 ms: pressure was a little high, plus last shot disrupted plasma |
| Mar 26 2004 01:19:02:627PM | 1040326019 | Jim Irby | repeat good plasma |
| Mar 26 2004 01:24:50:117PM | 1040326020 | Jim Irby | Back to seg 4, nl04 at 8.5e19/m^2 |
| Mar 26 2004 01:32:28:847PM | 1040326020 | Jim Irby | No power shot. TF breaker pulled before the shot. |
| Mar 26 2004 02:13:44:800PM | 1040326021 | Jim Irby | Good shot |
| Mar 26 2004 02:27:02:283PM | 1040326022 | Jim Irby | moved to seg 2, nl04 at 8e19/m^2, clearin reduced by .007 m good shot |
| Mar 26 2004 02:39:41:610PM | 1040326023 | Jim Irby | reduced clearin by .005 m ---- shot 22 was not really chanded by .007 m, but closer to .0007 m! disruption at 1.05 s --- Brian thinks probe ventured too far in but survived |
| Mar 26 2004 03:00:46:680PM | 1040326024 | Jim Irby | reduced clearin another .002 m --- should set the gap at about .005 m good shot --- inner gap at 0.06 m |
| Mar 26 2004 03:12:37:930PM | 1040326025 | Jim Irby | reduced inner gap by .004 m rediced rcur by .002 m good plasma low laser level lost all by channel 6 of TCI --- still had feedback |
| Mar 26 2004 03:33:44:813PM | 1040326026 | Jim Irby | repeat good shot |
| Mar 26 2004 03:51:00:550PM | 1040326027 | Jim Irby | clearin reduced by .002 m, rcur reduced by .001 m Lost plasma a little early at 1.67 s --- OH2L crowbar again |
| Mar 26 2004 04:10:07:043PM | 1040326028 | Jim Irby | extended clearin time near wall about 100 ms to account for later h-mode formation good shot h-mode still starts about when we move away from the inner wall |
| Mar 26 2004 04:42:57:883PM | 1040326029 | Jim Irby | repeat with more rf power (delay as we check OH2L IOC again --- it went when the breakers were closed) good shot |
| Engineering Operator Comments | ||||
| Shot | Time | Type | Status | Comment |
| 1 | 08:18:33:780AM | Test | Bad | Igor Stopped |
| 2 | 08:48:06:503AM | Test | Ok | |
| 3 | 08:58:04:390AM | Test | Ok | |
| 4 | 09:18:47:740AM | Plasma | Ok | |
| 5 | 09:35:07:477AM | Plasma | Ok | |
| 6 | 09:50:45:590AM | Plasma | Ok | |
| 7 | 10:04:52:870AM | Plasma | Ok | |
| 8 | 10:19:51:497AM | Plasma | Ok | |
| 9 | 10:33:42:110AM | Plasma | Ok | |
| 10 | 10:47:36:310AM | Plasma | Ok | |
| 11 | 11:01:47:810AM | Plasma | Ok | |
| 12 | 11:17:13:033AM | Plasma | Ok | |
| 13 | 11:31:12:737AM | Plasma | Ok | |
| 14 | 11:45:10:330AM | Plasma | Ok | |
| 15 | 12:00:21:800PM | Plasma | Ok | |
| 16 | 12:18:31:730PM | Plasma | Ok | |
| 17 | 12:31:28:510PM | Plasma | Bad | OH@ and EF1 Comm flt |
| 18 | 01:00:15:247PM | Plasma | Ok | |
| 19 | 01:13:54:917PM | Plasma | Ok | |
| 20 | 01:28:39:137PM | Plasma | Bad | TF type 1 fault |
| 21 | 01:59:04:170PM | Plasma | Ok | |
| 22 | 02:17:28:270PM | Plasma | Ok | |
| 23 | 02:31:24:227PM | Plasma | Ok | |
| 24 | 02:53:25:923PM | Plasma | Ok | |
| 25 | 03:06:34:860PM | Plasma | Ok | |
| 26 | 03:23:30:973PM | Plasma | Ok | |
| 27 | 03:36:21:003PM | Plasma | Bad | OH2L IOC flt |
| 28 | 04:05:57:710PM | Plasma | Ok | |
| 29 | 04:36:08:877PM | Plasma | Ok | |
| 30 | 04:52:23:083PM | Plasma | Ok | |