| Miniproposals | ||||||||||
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| Operators | |
| Session leader(s): | Jim Terry |
| Physics operator(s): | Ron Parker |
| Engineering operator(s): | Andy Pfeiffer,Ed Fitzgerald,Gary Dekow |
| Engineering Operator Run Comment |
| MP453: Study of QC Mode with Unfavorable (for H-mode) Grad B Drift SL: J |
| Session Leader Plans |
| Entered: May 31 2006 01:15:35:903PM |
| Author: Jim Terry |
| We wish to examine the QC mode in a magnetic equilibrium with
the B x grad B drift in the direction unfavorable for H-mode. That is, in reversed field with a LSN configuration. Although this configuration is unfavorable for H-mode, it is known that for Ohmic L-mode plasmas the poloidal plasma flow direction in the SOL is in the same direction as in LSN with the normal field direction. We wish to test whether a change in the field direction will change the characteristics of the QCM. Thus we will be comparing QCM characteristics with reversed field in LSN and USN configurations. In order to use the poloidal array of the Gas-Puff-Imaging system (one of the key diagnostics), the outer gap should be 0.7 cm. In the reverse field USN configuration (i.e. favorable for H-mode) there is also the opportunity to change the major radial position of the X-pt over a wider range than with a LSN. This is because the outer nose is in the way for the LSN. The PCI diagnostic is presently configured with the widest possible range in major radius and, as such, can determine how close beyond R=0.60 m the QCM gets to the X-pt. This was determination was done during the 1060526 run with reversed field and USN. On shot 1060526009 PCI observed that the QCM did not extend inward of R= 0.62 m when the USN X-pt was at R=0.56 m. We wish to test whether this inward extent of the QCM moves in when the X-pt is moved in. The run plan is: After an overnight boronization: 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 + 1 psi Ne Hybrid DISABLED (PG1) leave B-side upper as is Hybrid DISABLED (PG2) fill B-main (C-side) with 40 psi D2 Hybrid enabled (PG3) fill NINJA with 10 psi D2 enabled Enable the following gate valves and shutters: ECE, VUV, Z-bolo shutters Torvac setup: Gate valves open Key diagnostics: Gas puff imaging, PCI, HIREX rotation, edge Thomson, FRC-ECE RF waveform: On at 0.7 s, off at 1.2 s Max power from E and D antennas plus 1 MW from J (if possible) for LSN configurations. Ideally 3.5 to 4 MW total. Max power from E and D antennas for USN configurations. Ideally 2.5 to 3 MW total. Load shot 1060524019, but with the following changes: Bt to 5.6 T for the FRC-ECE Outer gap from 1.0 cm to 0.7 cm for GPI Target NL04=0.8x10^20 Note that RXL is 55.6 cm 1) Obtain EDA H-mode with QCM - presumably RF power should be > 3 MW. If EDA is not obtained at the 0.8x10^20 target density, then raise the target to increase the edge collisonality in order to search for the EDA. (3 good shots, but it may take many shots to get the 3 good ones.) 2) If QC modes are obtained, then sweep outer gap in 0.13 s from 0.8 cm to 1.6 cm (3 good shots). 3) Now switch to USN with outer gap fixed at 0.7 cm (favorable direction for H-mode), keeping plasma parameters the same as those found for optimal QCM in LSN. Reduce RF power to 2MW. Note that RXU should be ~55.6 cm. (2 shots with QCM) 4) Pull upper X-pt in to RXU=52.1 cm and lower ZXU to 36.6 cm, keep target density the same. This is for PCI to see the innermost extent of the QCM move inward. (1 shot with the QCM) 5) Decrease the target density to 0.4x10^20 in order to see if the QCM disappears at low collisionality. |
| Physics Operators Plans |
| Entered: May 31 2006 03:38:04:903PM |
| Author: Ron Parker |
|
Engineering Setup and Run Plan for June 1, 2006 MP453: Study of QC Mode with Unfavorable (for H-mode) Grad B Drift SL: Jim Terry PO: Ron Parker Engineering setup: ------------------- Boronization, Helium ECDC and RF Conditioning Recipe: 10% B2D6 / 90% He 6L bottle. vessel temperature at 60/60/60. 120 psi to be deposited. PEI setting to 44/70/80 (Rmin/Rres/Rmax) with no pulser. 20 s/60 s sweep time Gas Pressures: TC3/TC6/TC9/TC6Request = [4 to 7]/150/95/150 Helium ECDC at 5e-5 Torr to be started after the boronization and to be completed at a maximum of 4 hours but no later than 6 am so that the RF can begin conditioning. PEI setting to 44/70/80 during Helium ECDC RF will require power room access by 06:00 in order to begin a boronization recovery recipe consisting of: 1.) vacuum tune, 2.) multipactor conditioning of J antenna, 3.) re-tune to vacuum and 4.) vacuum conditioning with RF pulses. B-Top Plenum of the gas system will need to be set up with D2 for static fill by 6:30 am. Gas pressure at 1.0e-3 torr (9.9e-4), under feedback control. GV1 Closed Bypass (SV4) at 300 clicks for RGA Data RGA: Set file writing rate to once/minute. Set High Mass to 50 Set Dwell time to 250 PEI 3000 A. No sweep. I_Min = 3000 I_Resis = 3000 I_Max = 3000 Multipactor cleaning J3/J4, post overnight boronization: Tune J3/J4 to vacuum with both to dummy-load. Tuning similar to previous. Use one of the HP RF source, set at 78 MHz, and connect to two kalmuses after a splitter. Connect the kalmus outputs to J3/J4 coaxial lines. Power system setup as on 1060524014 A-coil configuration: normal [-Dtop +Dbot +Jtop -Jbot] and enabled. Torvac setup: Gate valves open Gas Setup: fill B-Top with 6 psi D2 Hybrid enabled (PG4) fill B-side lower with 1 psi Ar +1 psi Ne Hybrid disabled (PG1) leave B-side upper as is. Hybrid disabled (PG2) fill B-main with 40 psi D2 Hybrid enabled (PG3) leave NINJA with 10 psi. Hybrid enabled. Enable the following gate valves and shutters, assuming no vacuum problems: ECE, VUV, Z-bolo shutters D&E transmitters in run on by 8:30 AM Run Plan We'll start with shot 1060524019 with tweaks as specified in the SL Plan. For detailed run plan, see SL Plan. |
| Session Leader Summaries |
| Entered: Jan 28 2009 11:00:12:130AM |
| Author: Jim Terry |
| We achieved 3 of the four things that we wanted to do. Unfortunately,
the one thing we didn't get was the primary goal of the run, i.e. to observe the poloidal propagation direction of the QCM in reversed-field LSN. We didn't get this because for the two "EDA" H-modes that we got in this configuration (shots 024,025) the GPI poloidal array didn't see the QCM. I'm not sure of the reason for this - possibly the H-modes were too poor or the QCM was inside the array location during the (short) H-modes. Findings from this run: 1) The QCM amplitude was observed (by the PCI) to decrease to zero as it approached the X-point (in this case the upper X-pt.) The radial distance from the X-pt to the radius at which it disappeared is from R=64 to 68 cm. (We caution that if k_radial is increasing to >/~10 this could aslo cause the amplitude to decrease. Further analysis will be done.) This "disappearance point" was observed to move (inward) with the radial position of the X-pt as it was moved from 55.9 cm (shots 013-014) to 53.9 cm (shots 015-016) and finally to 52.1 cm (shots 018-019). (The movement corresponding to R_XU moving to 52.1 cm was less clear.) 2) For the QCMs obtained in USN the dominant k_thetas (at Z=-2 cm) were ~-2 cm-1. The propagation direction (down at the outboard midplane) is expected, since this is exactly equivalent to the normal-field LSN case for which the direction was up. However, in addition to the strong feature at k_theta~-2 cm-1 and f~100-150 kHz, there were weaker features at the QCM frequency with k_theta= 3, 5, and 6.5 cm-1. This is seen reproducibly for shots 014-019. 3) In the reversed-field USN configuration, ELMs and QCM appeared in plasmas with upper triangularity >0.72 and lowish pedestal collisionality. Shot 022 was the best example. There were (rather poor) ELMs detected on the fast magnetics and fast-diodes at 0.83 and 0.88 s. The ELM burst at 0.88s was followed by a QCM whose freq. was observed (on the fast diodes) to sweep down after onset. This shot should allow comparison of the ELM precursor oscillations and the QCM. The toroidal array fast magnetic coils were operational for this shot. 4) On shot 027 we did see something interesting that relates to the QCM propagation direction in the reversed field LSN (unfavorable) configuration. There was no QCM mode detected by any of the typically responsive diagnostics, i.e. there is a very slight EHA-like increase in density from 0.79 to 0.96 s with the rise correlated with the RF turn on, but the decay not correlated with anything, however there is nothing obvious on the PCI. We see a small peak at k_theta=-2 cm-1 and f~90 kHz. |
| Physics Operator Summaries |
| Entered: Jun 1 2006 05:21:14:480PM |
| Author: Ron Parker |
| The machine ran fairly well for this run, although the ICRF had difficulty maintaining sufficient power for H-mode with unfavorable drift direction.
The run featured many variations in target density, outer gap and radial position of the upper X-point. Both upper and lower single null discharges were run. The startup was not robust, although breakdown is. This probably has to do with the vessel conditions and the time and power it takes to burn through. Scorecard: 32 "shots", 23 full length, 5 fizzles, 1 TF problem, 1 no power and 2 disruptions, one at 1 s, the other at 0.85 s. |
| Session Leader Comments | |||
| Jun 1 2006 10:30:19:870AM | Jim Terry | fast diode setup
after shot 005 the fast-diode data window was from 0.900 to 1.031 sec diode # trans fiber # view F/no 1 GPI #1 OUTER SOL 14 F/1.4 2 GPI #2 OUTER SOL 13 F/1.4 3 GPI #3 OUTER SOL 39 F/1.4 4 GPI #4 Inner SOL C F/5.6 5 GPI #5 OUTER SOL 3 F/1.4 6 #39 OUTER SOL 38 F/5.6 7 #40 OUTER SOL 40 F/4.0 8 #41 OUTER SOL 31 F/2.8 9 #42 OUTER SOL 32 F/2.0 10 #43 OUTER SOL 33 F/4.0 11 #44 OUTER SOL 7 F/1.4 12 #45 OUTER SOL 35 F/4.0 13 #46 OUTER SOL 36 F/4.0 14 #47 OUTER SOL 10 F/4.0 15 #48 OUTER SOL 11 F/2.8 16 #49 OUTER SOL 12 F/4.0 17 #50 OUTER SOL 37 F/4.0 18 #51 OUTER SOL 9 F/2.8 19 #52 OUTER SOL 23 F/1.4 20 #20 OUTER SOL 5 F/1.4 21 #21 OUTER SOL 34 F/2.8 22 #22 OUTER SOL 4 F/1.4 23 #26 OUTER SOL 6 F/1.4 | |
| Jun 1 2006 10:29:40:760AM | 1060601004 | Jim Terry | NINJA at A-B limiter and B16-001 - trigger at 0.96 s, for 0.12 s
plenum pressure is 457 Torr (D2) fast-diode trigger is at 1.10 s LSN - Outer gap is 6 mm Good fast diode data, view 11 is saturated occasionally no RF |
| Jun 1 2006 10:29:10:573AM | 1060601005 | Jim Terry | NINJA at A-B limiter - trigger at 0.96 s, for 0.12 s
plenum pressure is 457 Torr (D2) fast-diode trigger is at 1.10 s LSN - Outer gap is 5 -> 2 mm during window Good fast diode data, view 11 is saturated most of the time RF at 1 MW multiple faults |
| Jun 1 2006 10:57:54:513AM | 1060601006 | Jim Terry | NINJA at A-B limiter - trigger at 0.76 s, for 0.12 s
plenum pressure is 457 Torr (D2) fast-diode trigger is at 0.90 s LSN - Outer gap is 7 -> 6 mm during fd window Good fast diode data, view 11 is saturated most of the time RF at 1.5 MW multiple faults |
| Jun 1 2006 11:04:49:760AM | 1060601007 | Jim Terry | NINJA at A-B limiter - trigger at 0.76 s, for 0.12 s
plenum pressure is 457 Torr (D2) fast-diode trigger is at 0.90 s LSN - Outer gap is 7 mm during fd window Good fast diode data, view 11 is OK RF at 1.6 MW multiple faults |
| Jun 1 2006 11:42:06:777AM | 1060601008 | Jim Terry | NINJA at A-B limiter - trigger at 0.76 s, for 0.12 s
plenum pressure is 457 Torr (D2) fast-diode trigger is at 0.90 s LSN - Outer gap is 6.6 mm during fd window Good fast diode data RF at 2.2 MW multiple faults, no sign of H-mode |
| Jun 1 2006 12:03:23:853PM | 1060601009 | Jim Terry | NINJA at A-B limiter - trigger at 0.76 s, for 0.12 s
plenum pressure is 457 Torr (D2) fast-diode trigger is at 0.90 s LSN - Outer gap is 6.6 mm during fd window Good fast diode data RF at 1.6 MW pretty steady, no sign of H-mode |
| Jun 1 2006 12:09:32:870PM | 1060601010 | Jim Terry | NINJA at A-B limiter - trigger at 0.76 s, for 0.12 s
plenum pressure is 457 Torr (D2) fast-diode trigger is at 0.90 s Since RF power is limited to <2.5 MW for the forseeable future. Try for USN (after loading shot 1060526009, changing Bt to 5.6T, and reducing the outer gap from 8.5 mm to 7 mm) fizzle |
| Jun 1 2006 12:16:13:323PM | 1060601011 | Jim Terry | NINJA at A-B limiter - trigger at 0.76 s, for 0.12 s
plenum pressure is 457 Torr (D2) fast-diode trigger is at 0.90 s Since RF power is limited to <2.5 MW for the forseeable future. Try for USN (after loading shot 1060526009, changing Bt to 5.6T, and reducing the outer gap from 8.5 mm to 7 mm) plasma, but still LSN ??? Outer gap is 7 mm during fd window Good fast diode data RF at 2.1 MW multiple faults, no sign of H-mode |
| Jun 1 2006 12:25:32:323PM | 1060601012 | Jim Terry | NINJA at A-B limiter - trigger at 0.76 s, for 0.12 s
plenum pressure is 457 Torr (D2) fast-diode trigger is at 0.90 s Again, try for USN (after loading shot 1060526009, changing Bt to 5.6T, and reducing the outer gap from 8.5 mm to 7 mm) plasma, but still LSN ??? Outer gap is 6 mm during fd window Good fast diode data RF at 2.6 MW with multiple faults, no sign of H-mode |
| Jun 1 2006 12:44:29:573PM | 1060601013 | Jim Terry | NINJA at A-B limiter - trigger at 0.76 s, for 0.12 s
plenum pressure is 457 Torr (D2) fast-diode trigger is at 0.90 s Again, try for USN (after loading shot 1060526009, changing Bt to 5.6T, and reducing the outer gap from 8.5 mm to 7 mm) plasma, good USN with H-mode and QCM on PCI Outer gap is 10 mm during fd window Good fast diode data RF at 2.4 MW with multiple faults, short EDA raise target density and reduce the outer gap for next shot |
| Jun 1 2006 01:00:01:717PM | 1060601014 | Jim Terry | NINJA at A-B limiter - trigger at 0.76 s, for 0.12 s
plenum pressure is 457 Torr (D2) fast-diode trigger is at 0.90 s plasma, good USN with longer H-mode and QCM on PCI and diodes Outer gap is 6 mm during fd window Good fast diode data RF at 1.3 MW with multiple EDA periods good k_theta determination from diodes |
| Jun 1 2006 01:09:47:770PM | 1060601015 | Jim Terry | NINJA at A-B limiter - trigger at 0.76 s, for 0.12 s
plenum pressure is 457 Torr (D2) fast-diode trigger is at 0.90 s moved upper X-pt in by 2 cm from 55.9 cm to 53.9 cm plasma, good USN with longish H-mode and QCM on PCI and diodes Outer gap is 7.2 mm during fd window Good fast diode data RF at 2.4 MW with some trips good k_theta determination from diodes; k_theta is -2, but there is also some weak feature at k_theta ~6 cm (plus!) reduce the outer gap by 3 mm and repeat for next shot |
| Jun 1 2006 01:26:00:653PM | 1060601016 | Jim Terry | NINJA at A-B limiter - trigger at 0.76 s, for 0.12 s
plenum pressure is 457 Torr (D2) fast-diode trigger is at 0.90 s plasma, good USN with longish H-mode and QCM on PCI and diodes Outer gap is 3.4 mm during fd window Good fast diode data RF at 2.3 MW with some trips good k_theta determination from diodes; k_theta is -2, but there is also some weak feature at k_theta ~6 cm (plus!) R_XU=53.9 cm during fd window. For next shot change R_XU to 52.1 cm |
| Jun 1 2006 01:34:28:207PM | 1060601017 | Jim Terry | NINJA at A-B limiter - trigger at 0.76 s, for 0.12 s
plenum pressure is 457 Torr (D2) fast-diode trigger is at 0.90 s They was no change in R_XU, so it's still 53.9 cm plasma, good USN with longish H-mode and QCM on PCI and diodes Outer gap is 2.4 mm during fd window Good fast diode data RF at 2.2 MW with some trips good k_theta determination from diodes; k_theta is -2, but there is also some weak feature at k_theta ~6 cm (plus!) For next shot change R_XU to 52.1 cm and turn off J ANT for HIREX |
| Jun 1 2006 01:56:26:720PM | 1060601018 | Jim Terry | NINJA at A-B limiter - trigger at 0.76 s, for 0.12 s
plenum pressure is 457 Torr (D2) fast-diode trigger is at 0.90 s R_XU was 51.7 cm as desired plasma, good USN with very short H-mode and QCM on PCI and diodes Outer gap is 3.4 mm during fd window Good fast diode data RF at 2.3 MW with many trips OK k_theta determination from diodes; k_theta is -2, but there is also some weak feature at k_theta ~6 cm (plus!) next shot repeat |
| Jun 1 2006 02:10:16:270PM | 1060601019 | Jim Terry | NINJA at A-B limiter - trigger at 0.76 s, for 0.12 s
plenum pressure is 457 Torr (D2) fast-diode trigger is at 0.90 s R_XU was 51.7 cm as desired Upper triangularity is 0.73 plasma, good USN with short H-mode and QCM on PCI and diodes Outer gap is 3.4 mm during fd window Good fast diode data RF at 2.4 MW steady OK k_theta determination from diodes; k_theta is -2, but there is also some weak feature at k_theta ~6 cm next shot reduce R_XU by 5 mm, drop target density to 5x1019, and increase outer gap to 7 mm |
| Jun 1 2006 02:40:40:937PM | 1060601021 | Jim Terry | NINJA at A-B limiter - trigger at 0.76 s, for 0.12 s
plenum pressure is 446 Torr (D2) fast-diode trigger is at 0.90 s R_XU was 51.1 cm as desired Upper triangularity is 0.75 target density is still too high (0.75x10^20 instead of 0.5) ELMs on magnetics and Da at 0.835 and 0.875 s. plasma, good USN with H-mode and QCM on PCI and diodes Outer gap is changing during fd window Good fast diode data RF at 2.4 MW steady OK k_theta determination from diodes; k_theta is -2 next shot drop target density to 4x1019 |
| Jun 1 2006 03:32:15:847PM | 1060601023 | Jim Terry | NINJA at A-B limiter - trigger at 0.76 s, for 0.10 s
increase plenum pressure is 543 Torr (D2) fast-diode trigger is at 0.90 s R_XU was 51.1 cm as desired Upper triangularity is 0.75 target density is still too high (0.67x10^20 instead of 0.5) plasma, good USN with H-mode and QCM on PCI and diodes Outer gap is changing during fd window Good fast diode data RF at 2.9 MW with drop outs No ELMs OK k_theta determination from diodes; k_theta is -2 next shot go back to LSN by loading shot 1060601009 |
| Jun 1 2006 03:34:38:897PM | 1060601024 | Jim Terry | NINJA at A-B limiter - trigger at 0.76 s, for 0.10 s
increase plenum pressure is 543 Torr (D2) fast-diode trigger is at 0.90 s LSN plasma, with short H-mode and QCM on PCI and diodes, but not on poloidal array Short QCM from 0.8 to 0.83 Outer gap is changing during fd window Good fast diode data RF at 2.9 MW with drop outs next shot increase target density from 0.8 to 1.0 x10^20 and decrease outer gap by 3 mm to nominally 3 or 4 mm. |
| Jun 1 2006 03:37:01:147PM | 1060601025 | Jim Terry | NINJA at A-B limiter - trigger at 0.76 s, for 0.10 s
increase plenum pressure is 543 Torr (D2) fast-diode trigger is at 0.90 s LSN plasma, with short H-mode and QCM on PCI and diodes, but not on poloidal array Short QCM from 0.8 to 0.83 Outer gap is changing during fd window Good fast diode data, but view 12 is saturated. RF at 3.35 MW with drop outs next shot increase target density from 0.8 to 1.0 x10^20 and decrease outer gap by 3 mm to nominally 3 or 4 mm. |
| Jun 1 2006 03:51:44:090PM | 1060601026 | Jim Terry | NINJA at A-B limiter - trigger at 0.76 s, for 0.10 s
increase plenum pressure is 533 Torr (D2) fast-diode trigger is at 0.90 s increased target density caused a MARFE, LSN plasma, no H-mode Outer gap is changing during fd window Good fast diode data, but view 12 is saturated. RF at 3 MW with many drop outs next shot decrease target density back to 0.8 and increase Ip rise early in shot. |
| Jun 1 2006 04:53:50:470PM | 1060601027 | Jim Terry | NINJA at A-B limiter - trigger at 0.76 s, for 0.10 s
increase plenum pressure is 533 Torr (D2) fast-diode trigger is at 0.90 s target density unchanged, still 1x10^20 LSN plasma, no H-mode except that the poloidal array sees a feature at k_theta~-2 and at f~90 kHz. This is the only QCM feature that we see in LSN. Outer gap is changing during fd window Good fast diode data RF at 3.3 MW with many drop outs next shot decrease target density back to 0.8 |
| Jun 1 2006 04:18:25:177PM | 1060601028 | Jim Terry | NINJA at A-B limiter - trigger at 0.76 s, for 0.10 s
increase plenum pressure is 533 Torr (D2) fast-diode trigger is at 0.90 s target density is 0.8x10^20, but increases to 1.25 with the RF and doesn't go into H-mode LSN plasma, no H-mode Outer gap is changing during fd window Good fast diode data RF at 3.4 MW with many drop outs next shot decrease target density to 0.6 and reduce the view 12 F/no from F/4 to F/5.6 |
| Jun 1 2006 04:41:45:797PM | 1060601029 | Jim Terry | NINJA at A-B limiter - trigger at 0.76 s, for 0.10 s
increase plenum pressure is 533 Torr (D2) fast-diode trigger is at 0.90 s target density is 0.65x10^20, but increases to 1.06 with the RF and goes into dithering H-mode LSN plasma, good confinement Wp to 150 kJ before an injection kills it Outer gap is changing during fd window Good fast diode data, but no QCM on poloidal array RF at 3.5 MW during H-mode next shot decrease target density to 0.5 |
| Jun 1 2006 05:02:52:990PM | 1060601030 | Jim Terry | NINJA at A-B limiter - trigger at 0.76 s, for 0.10 s
increase plenum pressure is 533 Torr (D2) fast-diode trigger is at 0.90 s target density is 0.65x10^20, but increases to 0.96 with the RF short ELM-free H-mode from 0.79 to 0.81 s LSN plasma Outer gap is changing during fd window Good fast diode data, but no QCM on poloidal array RF at 3.3 MW during H-mode |
| Jun 1 2006 05:16:52:107PM | 1060601032 | Jim Terry | NINJA at A-B limiter - trigger at 0.76 s, for 0.10 s
increase plenum pressure is 533 Torr (D2) fast-diode trigger is at 0.90 s target density is 0.33x10^20, and only increases to 0.6 with the RF no H-mode before disrupting at 0.85 s LSN plasma Outer gap is changing during fd window very strange fast diode data quiet until 0.81 s, still no QCM on poloidal array RF at 3.4 MW during H-mode |
| Jun 2 2006 09:28:16:800AM | 1060601032 | Jim Terry | NINJA at A-B limiter - trigger at 0.76 s, for 0.10 s
increase plenum pressure is 533 Torr (D2) fast-diode trigger is at 0.90 s target density is 0.33x10^20, and only increases to 0.6 with the RF no H-mode before disrupting at 0.85 s LSN plasma very strange fast diode data quiet until 0.81 s RF up to 3.5 MW |
| Physics Operator Comments | |||
| Jun 1 2006 09:04:23:027AM | 1060601001 | Ron Parker | Slight delay. RF not ready and problem with EF2L PS breaker. |
| Jun 1 2006 09:18:53:010AM | 1060601001 | Ron Parker | First fizzle of the day, presumably not the last. Halpha rose to over 3 V, discharge choked before current could take off. |
| Jun 1 2006 09:35:33:620AM | 1060601002 | Ron Parker | Power room access to check TF control electronics. |
| Jun 1 2006 09:35:50:573AM | 1060601002 | Ron Parker | Something misfired -- the TF mystery? |
| Jun 1 2006 09:49:05:997AM | 1060601002 | Ron Parker | Shot 3 will be a no power shot. |
| Jun 1 2006 09:56:04:090AM | 1060601003 | Ron Parker | The test power shot looked good and next shot will be a plasma attempt. |
| Jun 1 2006 10:09:33:620AM | 1060601004 | Ron Parker | Shot 4 was full length, although the current rise was a bit ratty.
Outer gap was ~ 6 mm. We'll increase it to 8 mm for next shot. |
| Jun 1 2006 10:30:18:683AM | 1060601005 | Ron Parker | Shot 5 was full length. |
| Jun 1 2006 10:55:44:010AM | 1060601006 | Ron Parker | Shot 6 was full length. Next: Try to stabilize outer gap from 1-1.3 s. |
| Jun 1 2006 11:10:40:090AM | 1060601007 | Ron Parker | Shot 7 was full length. |
| Jun 1 2006 11:26:19:323AM | 1060601008 | Ron Parker | Shot 8 was full length. A short cell access to move LH coupler back 2 mm.
ICRF is making progress, but still several trips. Power room access for RF extends delay. |
| Jun 1 2006 11:38:50:293AM | 1060601009 | Ron Parker | Shot 9 was full length. Next: Go to part 3 of run plan, since RF cannot provide power for parts 1&2. |
| Jun 1 2006 11:51:10:840AM | 1060601010 | Ron Parker | Fizzle. |
| Jun 1 2006 12:20:10:403PM | 1060601011 | Ron Parker | Shot 11 ran full length, but was lower null. Wrong segment imported from shot 1060526009 |
| Jun 1 2006 12:28:01:747PM | 1060601012 | Ron Parker | Shot 12 ran, but was still lower null. Should be upper null for next shot. |
| Jun 1 2006 12:38:46:137PM | 1060601013 | Ron Parker | Shot 13 ran full length, finally upper null as specified by SL.
Next: Target density increased to 1.0e20 cm-2. Also, outer gap closed up by 3 mm. |
| Jun 1 2006 12:58:16:213PM | 1060601014 | Ron Parker | Shot 14 ran full length. Good outer gap, EDA.
Next:Repeat but with RXU pulled in 2 cm |
| Jun 1 2006 01:06:52:223PM | 1060601015 | Ron Parker | Shot 15 ran full length. Next: Reduce outer gap by 4 mm. |
| Jun 1 2006 01:22:03:570PM | 1060601016 | Ron Parker | Shot 16 ran well. Next: pull RXU in an additional 1.8 cm. |
| Jun 1 2006 01:38:46:497PM | 1060601017 | Ron Parker | Ooops, wrong segment. This shot was same as 16. Next: RXU in by 1.8 mm |
| Jun 1 2006 01:51:14:650PM | 1060601018 | Ron Parker | Shot 18 good, RF bad. Repeat. |
| Jun 1 2006 02:06:00:770PM | 1060601019 | Ron Parker | Shot 19 was OK, disrupting on the current rampdown at ~300 kA.
Next: Decrease target density to 0.5e20, pull RXU in by 5 mm, and increase outer gap by 4 mm. |
| Jun 1 2006 02:08:05:817PM | 1060601020 | Ron Parker | Fizzle. |
| Jun 1 2006 02:23:57:097PM | 1060601021 | Ron Parker | Shot 21 ran full length. RF was better, not great. |
| Jun 1 2006 02:28:42:273PM | 1060601021 | Ron Parker | Target density was a bit high on shot 21. Reduce to 0.4e19 cm-2 for next shot. |
| Jun 1 2006 02:43:50:500PM | 1060601022 | Ron Parker | Fizzle. not clear why, but Bz is a bit high. Reduce IC_EF4 by 10 A. |
| Jun 1 2006 02:57:11:070PM | 1060601023 | Ron Parker | Shot 23 ran full length. Any tuning was probably irrelevant.
OK, SL says we are finished with upper null and will revert to lower null by reloading shot 9 from today. |
| Jun 1 2006 03:22:10:030PM | 1060601024 | Ron Parker | Shot 24 ran full length. Next: Target density increased to 1e20 cm-2. |
| Jun 1 2006 03:45:26:290PM | 1060601025 | Ron Parker | Shot 25 ran full length, but target density was ~0.7e20 cm-2. |
| Jun 1 2006 03:48:24:837PM | 1060601026 | Ron Parker | Shot 26 ran full length and the target density was 1.1e20 cm-3.
Next: Density reduced to 0.8e20 cm-3, and current ramprate increased to hold off MARFE. |
| Jun 1 2006 04:06:17:330PM | 1060601027 | Ron Parker | Shot 27 ran full length but density too high. Reset to 0.8e20 cm-2.
|
| Jun 1 2006 04:20:08:350PM | 1060601028 | Ron Parker | Shot 28 ran full length with correct target density of 0.8e20 cm-2.
Next: Reduce target density to 0.6e20 cm-2 Snall delay, SL wanted cell access. Also, check fuses in TF supply. |
| Jun 1 2006 04:35:46:200PM | 1060601029 | Ron Parker | Shot 29 ran full term. Next: Target density dropped to 0.5e20 cm-3 |
| Jun 1 2006 04:43:25:797PM | 1060601030 | Ron Parker | Disruption at ~ 1 s. |
| Jun 1 2006 04:52:48:487PM | 1060601030 | Ron Parker | Last shot (?) of the run coming up. No changes.
|
| Jun 1 2006 04:54:21:300PM | 1060601031 | Ron Parker | Fizzle. |
| Jun 1 2006 05:22:07:793PM | 1060601032 | Ron Parker | Shot 32 started up OK, but disrupted at ~ 0.85 s. |
| Engineering Operator Comments | ||||
| Shot | Time | Type | Status | Comment |
| 1 | 09:13:34:387AM | Plasma | Ok | |
| 2 | 09:25:58:920AM | Plasma | Bad | TF didn't work Correctly |
| 3 | 09:51:04:043AM | Test | Ok | |
| 4 | 10:03:21:543AM | Plasma | Ok | |
| 5 | 10:16:42:323AM | Plasma | Ok | |
| 6 | 10:30:51:560AM | Plasma | Ok | |
| 7 | 10:54:45:763AM | Plasma | Ok | |
| 8 | 11:08:28:357AM | Plasma | Ok | |
| 9 | 11:35:17:403AM | Plasma | Ok | |
| 10 | 11:49:13:073AM | Plasma | Ok | |
| 11 | 12:01:41:027PM | Plasma | Ok | |
| 12 | 12:16:32:557PM | Plasma | Ok | |
| 13 | 12:28:52:763PM | Plasma | Ok | |
| 14 | 12:41:13:060PM | Plasma | Ok | |
| 15 | 12:58:46:887PM | Plasma | Ok | |
| 16 | 01:11:07:883PM | Plasma | Ok | |
| 17 | 01:23:49:550PM | Plasma | Ok | |
| 18 | 01:39:45:077PM | Plasma | Ok | |
| 19 | 01:53:41:467PM | Plasma | Ok | |
| 20 | 02:06:25:380PM | Plasma | Ok | |
| 21 | 02:19:05:360PM | Plasma | Ok | |
| 22 | 02:31:37:743PM | Plasma | Ok | |
| 23 | 02:44:56:500PM | Plasma | Ok | |
| 24 | 03:08:56:180PM | Plasma | Ok | |
| 25 | 03:24:22:453PM | Plasma | Ok | |
| 26 | 03:36:58:303PM | Plasma | Ok | |
| 27 | 03:50:52:573PM | Plasma | Ok | |
| 28 | 04:03:27:453PM | Plasma | Ok | |
| 29 | 04:27:15:917PM | Plasma | Ok | |
| 30 | 04:39:45:047PM | Plasma | Ok | |
| 31 | 04:52:01:427PM | Plasma | Ok | |
| 32 | 05:04:31:210PM | Plasma | Ok | |