Miniproposals

Miniproposal: 609a Date Filed: 9/17/2010 Title: Dependence of momentum and particle pinch on collisionality, R/Ln and q First Author: John Rice Session Leader: Tuomas Tala (shots 1-32)

Engineering Operator Run Comment

MP609a Feasibility study to create rotation perturbations to investigate

Session Leader Plans

Entered: Jan 17 2012 01:01:19:930PM

Author: Tuomas Tala

Essential diagnostics: Hirex-Sr, Thomson, q-profile (MSE), soft x-ray for impurities B-side lower enabled, 1 psi Ar. This shot plan is based on miniproposal 609a and on the run day on 13 January 2011. For each shot, perform impurity injection (Calcium Fluoride) 200ms before the end of the current flat-top, but after the ICRH or SSEP modulation has been finished so that the impurity injection is under stationary conditions. Run the locked-mode calibration pulse for Hirex: 1111215017 ICRH modulation part: There are two ways we try to get a good rotation modulation signal while still keeping the plasma stationary enough (no massive temperature or density modulation). i) ICRH modulation in L-mode (upper single null configuration) : Reference shot: 1110217032 --- Bt=5.2T, Ip=0.8MA, nl04=1.3e20m^-2 (this reference pulse is lower single null) a) Vary the amplitude of the ICRH modulation at 10Hz, Bt=5.4T, Ip=0.8MA, nl04=1.3e20m^-2 in upper single null configuration. Choose the appropriate amplitude that maximises the rotation modulation (~5km/s, ~10% modulation amplitude) and minimises the temperature and density modulation (~<10%). ICRH power modulation at 10% frequency on any level between 0-3MW OK, could be like 1MW base power, modulating then between 1-3MW. Still keep it in L-mode. b) Perform a 3-point q95 scan by choosing the best modulation settings above. 1) Bt=5.4T, Ip=0.8MA, nl04=0.8e20m^-2 2) Bt=5.4T, Ip=1.2MA, nl04=0.8e20m^-2 3) Bt=5.4T, Ip=0.5MA, nl04=0.8e20m^-2 c) Perform a 3-point density (collisionality) scan by choosing the best modulation settings above. 1) Bt=5.4T, Ip=0.8MA, nl04=0.8e20m^-2 (same pulse as in b.1, already done) 2) Bt=5.4T, Ip=0.8MA, nl04=0.4e20m^-2 3) Bt=5.4T, Ip=0.8MA, nl04=1.5e20m^-2 ii) ICRH modulation in L-mode by going to I-mode after every power step-up: Same as before, but going to higher power to get to I-mode. d) Vary the amplitude of the ICRH modulation at 10Hz, Bt=5.4T, Ip=0.8MA, nl04=0.8e20m^-2. Choose the appropriate amplitude that maximises the rotation modulation and minimises the temperature and density modulation. ICRH power modulation so that at high ICRH power ~2.5MW ON phase the plasma goes to I-mode and then at 0MW RF power OFF phase it returns to L-mode. e) Perform a 3-point q95 scan by using the scheme above. 1) Bt=5.4T, Ip=0.8MA, nl04=1.3e20m^-2 2) Bt=5.4T, Ip=1.2MA, nl04=1.3e20m^-2 3) Bt=5.4T, Ip=0.5MA, nl04=1.3e20m^-2 f) Perform a 3-point density (collisionality scan) by modulating ICRH power between 0-3MW, the actual modulation amplitude to be chosen from looking into after a few test pulses the data at 10Hz modulation frequency. 1) Bt=5.4T, Ip=0.8MA, nl04=1.3e20m^-2 (same pulse as in e.1, already done) 2) Bt=5.4T, Ip=0.8MA, nl04=2.0e20m^-2 3) Bt=5.4T, Ip=0.8MA, nl04=0.8e20m^-2 SSEP sweep part: Reference shot: 1110113030 --- Bt=5.4T, Ip=0.8MA, nl04=0.8e20m^-2, Ohmic Try to increase the rotation modulation amplitude while not disrupting the shot. Higher SSEP amplitude, slower modulation time, now 70ms, would be the things to try. Run all the pulses at higher rotation as the effect on rotation should be more visible then. Repeat at a factor of 2 higher density (Bt=5.4T, Ip=0.8MA, nl04=1.6e20m^-2) Repeat at higher Bt and Ip (Bt=7T, Ip=1.1MA, nl04=1.6e20m^-2) Repeat at lower Bt and Ip (Bt=3.4T, Ip=0.5MA, nl04=1.6e20m^-2)

Physics Operators Plans

Entered: Jan 18 2012 06:56:43:313AM

Author: Earl Marmar

PO plan for 18 Jan 2012 MP609a Feasibility study to create rotation perturbations to investigate the dependence of momentum pinch on collisionality, R/Ln and q SL: T. Tala PO: E. Marmar ----------------- Engineering Setup ----------------- Run begins at 09:00 and ends at 17:00 Power systems as on: 1120106024 (locked-mode shot) Acoil: +Dtop -Dbot -Jtop +Jbot (standard) Hybrid Enabled Gas setup: B-Top with 6 psi D2 Hybrid enabled (PG4) B-side lower with 1 psi Ar Hybrid ENABLED(PG1) B-side upper as is Hybrid DISABLED (PG2) B-main (C-side) with 40 psi D2 Hybrid enabled (PG3) H-bot as is, Hybrid DISABLED (PG5) NINJA as is, Hybrid DISABLED B-div, Hybrid DISABLED (PG6) H-div, Hybrid DISABLED (PG7) Enable gate-valves and shutters: ECE, VUV, HiREX Sr, Xeus + LoWEUS, Zbolo Check with the physop before opening other diagnostic gate-valves or shutters. Torvac gatevalve toggle (yes/no): no Boronization(yes/no): no Overnight ECDC (yes/no): YES ICRF(yes/no): YES LH(yes/no): not into plasma Cryopump (yes/no): yes DNB (yes/no): yes Impurity blow-off injection: yes Vessel temperature: 35/35/35 ------------------------------ ECDC Parameters ------------------------------ gas and pressure: D2 at 2e-4 Torr sweep: 44/45/103 cm scan: 20/120 s After a successful locked-mode shot, move to USN; see SL_PLAN for shot sequence.

Session Leader Summaries

Entered: Jan 19 2012 03:01:24:600PM

Author: Tuomas Tala

This run day had lots of technical difficulties, in particular in the early part of the run. In the first part of the program, the modulation between the I-mode and L-mode was tried, but probably the power level of the ICRH was too low so that I-mode was achieved. As a consequence, the main effort and most of the shots were spent on performing ICRH modulation in L-mode using the upper single null configuration. Most of the shots had the RF modulation between 0 and 1.7MW (or 1.0MW and 2.7MW), for one shot (shot 13) we decreased it to 0 and 1.2MW and the rotation modulation virtually disappeared. The pulse length was extended to 1.6s to accomodate the impurity injection at 1.5s after the RF modulation phase. Physics scans that were fully or partly successful: Density scans: 1120118015 Bt=5.4T, Ip=0.8MA, nl04=0.8e20m^-2 (decent rotation modulation, also high temperature modulation) 1120118027 Bt=5.4T, Ip=0.8MA, nl04=1.3e20m^-2 (disrupted after 1.3s, rotation modulation probably OK) 1120118022 Bt=5.4T, Ip=0.8MA, nl04=0.5e20m^-2 (modulation probably OK) q95 scan at higher density: 1120118015 Bt=5.4T, Ip=0.8MA, nl04=0.8e20m^-2 (decent rotation modulation, also high temperature modulation) 1120118017 Bt=5.4T, Ip=1.1MA, nl04=0.8e20m^-2 (disrupted at 1.2s) q95 scan at lower density: 1120118023 Bt=5.4T, Ip=0.6MA, nl04=0.6e20m^-2 (modulation probably OK) 1120118022 Bt=5.4T, Ip=0.8MA, nl04=0.5e20m^-2 (modulation probably OK) 1120118024 Bt=5.4T, Ip=1.0MA, nl04=0.6e20m^-2 (rotation modulation seems small, also Te modulation smaller than in the shots of this scan) Move to the SSEP part of the program: It was a difficult task to dial up the reference shot 1110113030 as it tended to disrupt in an early phase of the shot. Only two shots with a few modulation cycles before the disruption achieved - 1120118031 and 1120118032. However, the rotation modulation looks smaller than in the old reference shot. Future plans: To complete this miniproposal and this ITPA experiment, two other ways to modulate the rotation should be done. In a reversed field plasma, modulate RF power between the L-mode and I-mode phases. This has the benefit that rotation perturbation is coming from the edge and the analysis is simplified. The second method should be that during a steady I-mode plasma, modulate RF power on top as also in this case, we can expect the rotation modulation originating dominantly from the edge.

Physics Operator Summaries

Entered: Jan 25 2012 05:20:12:247PM

Author: Earl Marmar

MP609a Feasibility study to create rotation perturbations to investigate the dependence of momentum pinch on collisionality, R/Ln and q SL: T. Tala PO: E. Marmar We had some difficulties today, but a portion of the run plan was carried out. After a successful locked-mode shot, we had a problem on shot 2, apparently the result of loading a reversed field shot into PCS. Following the SL plan, 1110217032 was loaded. However, the PO realized that this was a reversed-field shot, the intention was to import and then load 1101208005, and I thought I had done that. However, after the shot (which was a dud, with no TF prior to t=0, and PF currents in the wrong direction), I checked the active PCS interface, and the active segments (1 and 2) still had provenance of 1110217032. This means that the "load from" 1101208005 never took, or I typed the wrong shot number. When I did the second last load before the shot, pcs gave me an error message indicating that the fizzle sequence shot had the wrong polarity for the TF, and I misinterpreted this, thinking it was a hold-over from the previous load. After changing the fizzle sequence to the correct shot, I loaded again, and the dud resulted. This also led to various faults on PF commutation systems, which were reset after shot 3, which was another dud. Shot 3 also had no TF. Shot 4 was a 50 kA TF only test, which was fine. Shot 5 was another attempt using 1101208005, which fizzled. Shot 6 was a plasma. This one disrupted at 1.1 seconds, looking vertically unstable. It also had a neon puff (pg5 enabled), which was not intended. After several disruptions, and an init_failure no-power shot (11), shot 12 was the first full-length USN discharge. From shot 28 on, we went to the SSEP sweep part of the run-plan; these discharges mostly disrupted in the middle of Ip flattop. Summary: Shot,Duration(s),Ipmax(MA),Result Shot,Duration(s),Ipmax,Result | 01 1.150 0.836 Plasma | 02 0.000 0.025 Dud | | 03 0.000 0.032 Dud | 04 0.000 0.004 Dud | | 05 0.000 0.033 Fizzle | 06 1.073 1.108 Plasma | | 07 0.000 0.035 Fizzle | 08 1.453 0.912 Plasma | | 09 1.265 0.906 Plasma | 10 0.000 0.043 Fizzle | | 11 0.000 0.003 Dud | 12 1.944 0.812 Plasma | | 13 1.641 0.817 Plasma | 14 1.633 0.810 Plasma | | 15 2.030 0.808 Plasma | 16 0.000 0.045 Fizzle | | 17 1.260 1.129 Plasma | 18 0.000 0.053 Fizzle | | 19 0.360 0.510 Plasma | 20 1.961 0.695 Plasma | | 21 0.000 0.044 Fizzle | 22 2.030 0.819 Plasma | | 23 2.030 0.702 Plasma | 24 1.630 1.010 Plasma | | 25 1.462 0.814 Plasma | 26 0.000 0.052 Fizzle | | 27 1.337 0.813 Plasma | 28 0.000 0.053 Fizzle | | 29 0.365 0.575 Plasma | 30 1.062 0.804 Plasma | | 31 1.261 0.808 Plasma | 32 1.152 0.811 Plasma | Date 1120118: 32 shots. 20 plasmas. 8 fizzles. 4 duds. 0 System Error. (Plasma = Ip gt 60.0 kA Dud = H_alpha lt 0.10 V) Total plasma duration: 28.10 s (exceeding -83 kA)

Session Leader Comments
Jan 18 2012 09:36:48:923AM	1120118001	Tuomas Tala	Locked-mode reference pulse for Hirex calibration. Locked but probably not good enough for the calibration. May need to be repeated later during the run,
Jan 18 2012 09:58:29:087AM	1120118002	Tuomas Tala	I-mode test by modulating ICRH between 1-3MW. The TF waveform very strange, repeating the pulse.
Jan 18 2012 10:29:43:427AM	1120118003	Tuomas Tala	I-mode test by modulating ICRH between 1-3MW. Same as before, TF waveform very strange, go to TF test.
Jan 18 2012 10:30:34:580AM	1120118004	Tuomas Tala	TF test pulse. Worked.
Jan 18 2012 11:01:49:580AM	1120118005	Tuomas Tala	Back to the program to make the I-mode pulse. Did not work.
Jan 18 2012 11:24:21:000AM	1120118006	Tuomas Tala	Disrupted at 1.05s.
Jan 18 2012 11:30:59:327AM	1120118007	Tuomas Tala	Not a proper shot, typical problems after the disruption.
Jan 18 2012 11:56:05:907AM	1120118009	Tuomas Tala	Disrupted at 1.25s, has some 7 ICRH modulation cycles and stationary density. Ip=0.9MA.
Jan 18 2012 12:12:04:120PM	1120118010	Tuomas Tala	Not a decent physics shot.
Jan 18 2012 12:56:24:237PM	1120118011	Tuomas Tala	Not a physics shot.
Jan 18 2012 01:06:48:437PM	1120118012	Tuomas Tala	First shot that has all the modulation cycles between 0.5-1s. Clear rotation modulation, also clear Te and Ti modulation of the order of 10%. Density modulation small. Decrease the RF power modulation from 1.7MW to 1.2MW and extend the pulse length by 100ms to inject impurities at 1.5s.
Jan 18 2012 01:12:26:487PM	1120118013	Tuomas Tala	Decreased the RF power modulation from 1.7MW to 1.2MW and extended the pulse length by 100ms to inject impurities at 1.5s. RF power tripped, the density non-stationary. Looks like the rotation modulation disappears. Impurity puffed at 1.5s.
Jan 18 2012 01:36:45:497PM	1120118014	Tuomas Tala	Went through until 1.6s, but rotation modulation much smaller. In the next shot remove the steady RF part so that the modulation is between 0-1.7MW as the rotation modulation is much larger during that phase.
Jan 18 2012 01:40:08:660PM	1120118015	Tuomas Tala	The RF modulation is between 0-1.7MW as the rotation modulation is much larger during that phase. A good pulse (reference case for the density and q95 scans) with impurity injection at 1.5s.
Jan 18 2012 01:40:52:817PM	1120118016	Tuomas Tala	q95 scan, go to higher current at 1.1MA. Keep the density the same. Not a physics pulse.
Jan 18 2012 01:59:49:137PM	1120118017	Tuomas Tala	Repeat the same pulse, q95 scan, go to higher current at 1.1MA. Disrupted at 1.25s. Still a few good cycles, rotation modulation significantly smaller than at low current (Ti modulation still very clear).
Jan 18 2012 02:07:36:627PM	1120118018	Tuomas Tala	Go to low current 0.6MA in the q95 scan. No pulse.
Jan 18 2012 02:22:23:267PM	1120118019	Tuomas Tala	Go to low current at 0.6MA in the q95 scan. Early disruption.
Jan 18 2012 02:44:11:740PM	1120118020	Tuomas Tala	Repeat. Very strange shot, density modulating wildly. Not a useful physics pulse although otherwise interesting shot.
Jan 18 2012 02:47:04:493PM	1120118021	Tuomas Tala	Go to density scan, repeating pulse 15 but at low density 0.5e^20. No plasma.
Jan 18 2012 03:09:12:427PM	1120118022	Tuomas Tala	Go to density scan, repeating pulse 15 but at low density 0.5e^20. Good pulse with clean RF waveform and density, but the rotation signal maybe weak.
Jan 18 2012 03:19:32:090PM	1120118023	Tuomas Tala	Going back to q95 scan but at lower density (same as in the previous shot). So, not a perfect q95 scan. Relatively steady shot with good modulation.
Jan 18 2012 03:31:43:997PM	1120118024	Tuomas Tala	Going back to q95 scan but at lower density but carry out a high current Ip=1.0MA case. A good shot, but no rotation modulation forwhatever reason. This completed the q95 scan although the high current shot does not give any modulation data.
Jan 18 2012 04:27:05:660PM	1120118025	Tuomas Tala	Doing the high density point in the density scan, nl04=1.3e20. Did not work out nicely, density behaviour irraticm RF modulation tripping.
Jan 18 2012 03:56:55:847PM	1120118026	Tuomas Tala	Doing the high density point in the density scan, nl04=1.3e20. Not a physics pulse.
Jan 18 2012 04:15:35:993PM	1120118027	Tuomas Tala	Doing the high density point in the density scan, nl04=1.3e20. Looks OK from the density and RF point of view.
Jan 18 2012 04:19:05:010PM	1120118028	Tuomas Tala	Move to the SSEP part of the program. Repeat the reference pulse 1110113030. Not a physics pulse.
Jan 18 2012 04:34:52:990PM	1120118029	Tuomas Tala	Repeat the previous one. Disrupted at 0.3s.
Jan 18 2012 04:54:06:157PM	1120118030	Tuomas Tala	Repeat the previous one. Disrupted at 1.05s. It looks like no modulation is coming from the SSEP which also looks very small.
Jan 18 2012 05:05:37:373PM	1120118032	Tuomas Tala	Repeat the previous one. Disrupted at 1.25s. Rotation modulation still looks very small if not zero.
Jan 18 2012 05:14:28:660PM	1120118032	Tuomas Tala	Repeat the previous one. Disrupted at 1.2s. Rotation modulation still looks very small if not zero.

Physics Operator Comments
Jan 18 2012 08:45:45:540AM	1120118001	Jim Irby	loaded 1120106024 --- locked mode shot open tree done prefill at 16 ms pg1 from 300 to 600 ms --- Argon at 1 psi
Jan 18 2012 09:50:00:933AM	1120118001	Earl Marmar	locked mode shot (from 1120106024) plasma locked around .55s, disrupt at 1.15s some early hards
Jan 18 2012 11:03:01:077AM	1120118002	Earl Marmar	go to upper null, 1.1 MA, cryopump startup (50 ms prefill puff) load from 1101208005 recalculate magnetics for segments 1 and 2 zero segments 3 and 4 change dpcs_fizzle target shot to 1090731017 dud, many missing power supplies For reasons I don't understand, actually had 1110217032 in segments 1 and 2, not 1101208005. The former was a reversed TF/OH shot (positive current programmed for TF). I had loaded from 1110217032 prior to loading from 1101208005, but somehow the second "load from" did not go through. This was not a case of forgetting to load; after the shot, in the DPCS interface, the source boxes for both segments 1 and 2 showed 1110217032.
Jan 18 2012 10:26:54:580AM	1120118003	Earl Marmar	go to upper null, 1.1 MA, cryopump startup (50 ms prefill puff) load from 1101208005 recalculate magnetics for segments 1 and 2 zero segments 3 and 4 dud, no TF, all other supplies went
Jan 18 2012 10:26:38:120AM	1120118004	Earl Marmar	50 kA TF only test, PLC control looks ok
Jan 18 2012 10:54:08:053AM	1120118005	Earl Marmar	another attempt at 1.1 MA, USN, with cryopump fizzle supplies look ok BR looks too negative, fill pressure a tad high
Jan 18 2012 11:21:17:657AM	1120118006	Earl Marmar	BR_0 offset to +0.001 (from 0.000) prefill puff to 45 ms (from 50 ms) plasma, disrupt at 1.1 s looks vertically unstable turns out PG5 was enabled, with neon puff starting at 0.5 s
Jan 18 2012 11:29:05:107AM	1120118007	Earl Marmar	Ip to 0.9 MA nl_04 to 9e19 ZCUR to +.005 (from -.005) disable H-bottom (neon) zero PG5 puff in segment 2 fizzle almost no current
Jan 18 2012 12:08:57:587PM	1120118008	Earl Marmar	no DPCS changes plasma disrupt at 1.45 s, vertical H/(H+D) ~15%
Jan 18 2012 12:03:33:747PM	1120118009	Earl Marmar	prefill puff to 42 ms (from 45) increase Ar (PG1) to 150 ms puff (from 75) ZCUR to +.01 (from +.005) ZXL to -.06 (from -.05) plasma disrupt at 1.25
Jan 18 2012 12:08:06:453PM	1120118010	Earl Marmar	ZXL to -.05 (from -.06) ZXU to +0.01 (from +0.015) Ip to 0.8 MA nl_04 target to 8e19 fizzle, late breakdown
Jan 18 2012 12:20:49:420PM	1120118011	Earl Marmar	no dpcs changes no power shot critical failure during init (RF?)
Jan 18 2012 12:36:50:077PM	1120118012	Earl Marmar	ZXL to -.04 (from -.05) plasma, full length
Jan 18 2012 01:07:18:293PM	1120118013	Earl Marmar	extend flattop 1.6 s plasma, disrupt just after end of flattop strange density time history on this shot
Jan 18 2012 01:07:44:360PM	1120118014	Earl Marmar	no dpcs changes
Jan 18 2012 01:33:13:963PM	1120118015	Earl Marmar	small tweak to ZXL (ramping through the flattop to reach -.03 at 1.6 s) plasma, full length
Jan 18 2012 01:49:10:570PM	1120118016	Earl Marmar	Ip to 1.1 MA, no change to nl_04 target (still 8e19) fizzle, late breakdown f-side ratiomatic significantly higher at t=0 than on recent good shots (cyro-burp?)
Jan 18 2012 02:26:21:903PM	1120118017	Earl Marmar	t<0 EF4 current to -1310A (from -1290) plasma disrupt at 1.25 s
Jan 18 2012 02:08:45:800PM	1120118018	Earl Marmar	Ip to 0.6 MA fizzle fill pressure looks ok breakdown not late (post 1.1 MA disruption fizzle?)
Jan 18 2012 02:27:20:680PM	1120118019	Earl Marmar	no dpcs changes plasma disrupt at 0.35s
Jan 18 2012 02:43:23:080PM	1120118020	Earl Marmar	tweak early segment 2 current waveform flattop target still 0.6 MA plasma, nearly full-length strange modulated density behavior during RF modulation
Jan 18 2012 02:50:56:053PM	1120118021	Earl Marmar	reload 1120118015 (0.8 MA) nl_04 target to 5e19 fizzle should probably not have taken segment 1 from shot 15 (EF4 offset change)
Jan 18 2012 03:10:54:453PM	1120118022	Earl Marmar	import segment 1 from 1120118020 into segment 1 plasma, full length
Jan 18 2012 03:55:11:607PM	1120118023	Earl Marmar	Argon (PG1) to 200 ms (from 150) Ip to 0.6 MA plasma, full length
Jan 18 2012 03:35:26:607PM	1120118024	Earl Marmar	Ip to 1.0 MA nl_04 target still 0.5e20 plasma disrupt at 1.63 s
Jan 18 2012 03:44:35:413PM	1120118025	Earl Marmar	load from shot 22 (0.8 MA) nl_04 target to 1.3e20 plasma, disrupt at 1.46 s marfing throughout (too much argon?)
Jan 18 2012 03:53:55:950PM	1120118026	Earl Marmar	argon (PG1) puff to 100 ms (from 150) fizzle
Jan 18 2012 04:05:22:907PM	1120118027	Earl Marmar	prefill puff to 40 ms (from 42) plasma, disrupt at 1.33s
Jan 18 2012 04:20:21:727PM	1120118028	Earl Marmar	load from 1110113030 DN, with small SSEP sweeps import segment 1 from 1120118027 into segment 1 zero segments 2 and 4 recalculate magnetics in segment 3 argon (PG1) to 150 ms (from 250) fizzle fields, breakdown time look ok ratiomatic tripped on previous disruption, off for this shot
Jan 18 2012 04:54:40:950PM	1120118029	Earl Marmar	no dpcs changes plasma early disruption, lots of marfe-like activity prior to the disruption
Jan 18 2012 04:55:05:103PM	1120118030	Earl Marmar	no dpcs changes plasma disrupt at 1.05s
Jan 18 2012 04:58:27:793PM	1120118031	Earl Marmar	nl_04 target to 8e19 (from 9.5e19) argon (PG1) to 250 ms (from 150) plasma, disrupt at 1.25 s
Jan 18 2012 05:19:14:887PM	1120118032	Earl Marmar	increase amplitude of ZCUR modulations; now from -7mm to +1 mm (previously -7mm to 0) plasma, disrupt at 1.15s (went up)

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	09:18:09:280AM	Plasma	Ok
2	09:50:15:723AM	Plasma	Bad	no EF2 and EF3
3	10:06:07:937AM	Plasma	Bad	no TF
4	10:19:11:813AM	Test	Ok	TF looks okay
5	10:45:08:960AM	Plasma	Ok
6	11:01:08:593AM	Plasma	Ok
7	11:18:58:033AM	Plasma	Ok
8	11:32:20:297AM	Plasma	Ok
9	11:47:31:350AM	Plasma	Ok
10	12:02:17:007PM	Plasma	Ok
11	12:15:35:563PM	Plasma	Bad	no power shot Critical Failure in init.
12	12:34:08:327PM	Plasma	Ok
13	12:52:33:503PM	Plasma	Ok
14	01:07:22:330PM	Plasma	Ok
15	01:21:45:417PM	Plasma	Ok
16	01:35:15:350PM	Plasma	Ok
17	01:48:07:643PM	Plasma	Ok
18	02:03:01:417PM	Plasma	Ok
19	02:15:51:390PM	Plasma	Ok	PF Breaker oped after the plasma disrupted
20	02:29:04:090PM	Plasma	Ok
21	02:43:55:997PM	Plasma	Ok
22	02:56:41:793PM	Plasma	Ok
23	03:09:28:283PM	Plasma	Ok
24	03:22:22:863PM	Plasma	Ok
25	03:35:18:800PM	Plasma	Ok
26	03:48:24:720PM	Plasma	Ok
27	04:01:08:273PM	Plasma	Ok
28	04:15:00:390PM	Plasma	Ok
29	04:27:38:813PM	Plasma	Ok
30	04:40:21:437PM	Plasma	Ok
31	04:53:10:817PM	Plasma	Ok
32	05:05:58:997PM	Plasma	Ok

System Availability

Jan 18 2012 09:17:47:683AM

System Available Comment Availability Changed Owner Description Who Can Change Active MHD no secured - tagged out Jun 02 2008 11:03AM (sears) Joe Snipes Active MHD Antenna golfit BES yes BES system is online Nov 22 2011 02:21PM (bespam) Bill Rowan Beam Emission Spectroscopy bespam,liao,rowan Bolometers yes 2pi and midplane AXUV diodes awaiting first plasma. Divertor diodes installed, but amplifiers need to be installed. Core and divertor bolometry not yet hooked up Nov 17 2011 02:45PM (mlreinke) Matt Reinke Bolometers hutch,mlreinke Boronization no Bottle Removed. System has been tested and will be ready once bottle is installed Jan 09 2012 06:32AM (dekow) Jim Irby Boronization dekow,irby CECE no   Jan 06 2012 03:48PM  Anne White Correlation ECE whitea CNPA yes Multiple channel CNPA available, no safety risk for in-vessel access Apr 14 2011 12:01PM (parker) Ron Parker Compact Neutral Analyzer parker Cryopump - Upper Divertor yes Operational. He level meter not working on 500L dewar. Frank will take manual readings. Jan 11 2012 11:46AM (labombard) Brian LaBombard Upper Divertor Cryopump dekow,irby,labombard CXRS yes core-CXRS system is online Nov 22 2011 02:21PM (bespam) Bill Rowan Charge Exchange Spectroscopy bespam,blip,liao,rachmcd,rowan CXRS edge yes Michael CHurchill has primary responsibility at the moment Apr 19 2011 11:44AM (blip) Bruce Lipshultz Measurement of CXR light in the pedestal region at both the high- and low-field sides blip,rmchurch D Alpha yes \ha2_bright is available; \SPECTROSCOPY::TOP.VUV.VIS_SIGNALS:MCP_VIS_SIG1 is not available Jul 01 2009 09:45AM (terry) Jim Terry Balmer Alpha Monitor irby,terry,wolfe Dalsa no system is is installed and aligned, but not functional (appears to be a broken cable) Dec 05 2011 02:41PM (marmar) Earl Marmar Visible Bremsstrahlung Imaging marmar Disruption Mitigation no gas jet valve disabled on 2011/04/13 Apr 13 2011 02:04PM (granetz) Robert Granetz Gas Jet granetz,whyte Divertor IR no   Mar 06 2007 10:50AM  Glen Wurden Divertor IR Digital Video gwurden,terry Divertor IR Spectroscopy no   Mar 06 2007 10:51AM  Glen Wurden Divertor IR Spectroscopy gwurden,terry DMBolo AXUV diodes no Diodes are taking data, but system is not fully operational yet. Post-acquisition data processing code is not yet functional. Dec 02 2011 03:27PM (golynyk) Geoff Olynyk Set of six AXUV diodes in a toroidal array of midplane wall boxes. golynyk,granetz,mlreinke,whyte DNB yes   Dec 01 2011 11:46AM (granetz) Robert Granetz Diagnostic Neutral Beam dterry,granetz,mochung ECDC yes Operational as of 11/19/11 Nov 22 2011 03:01PM (irby) Jim Irby 2.45 GHz, 3 kW, discharge cleaning system dekow,irby,pfeiffer FRC-ECE no Power off to RF and IF sections- Power on to DA Apr 11 2011 02:54PM (phillips) Perry Phillips Heterodyne ECE-32 channels bespam,liao,phillips,rowan,whitea FTCI no   Jan 06 2012 04:36PM  Jim Irby Fast two-color interferometer irby G-Side Ratiomatic yes   Dec 02 2011 12:24PM (toland) Brian LaBombard G-side ratiomatic ionization gauge labombard,toland Glow Discharge no Power supply unplugged and redtagged, HV cables removed Apr 14 2011 08:03AM (dekow) Jim Irby 1 kV, 5 A, glow discharge system dekow,dterry,irby GPC yes Using new preamps. Nov 30 2011 07:51AM (hubbard) Amanda Hubbard ECE Polychromater hubbard GPC2 yes Dewar cold. Nov 21 2011 09:55AM (hubbard) Amanda Hubbard ECE Polychromater hubbard GPI yes The Xpt-view, the midplane-view cameras are operational. The innerwall GPI (coupled to the fast-diodes) is available. Jul 01 2009 09:45AM (terry) Jim Terry Gas Puff Imaging terry,zweben H/D yes system is functional and taking data Dec 05 2011 02:42PM (marmar) Earl Marmar H/D Ratio marmar HEAT yes   Jan 09 2012 06:32AM (dekow) Gary Dekow - Machine Heaters - burke,dekow Hirex Jr yes Hirex-Jr has been installed Jun 28 2010 03:36PM (rice) John Rice High Resolution X-Ray ince,rice Hirex Sr yes Installed and aligned. Will be available for Ti/Vr profiles after focusing tests and locked modes are taken. Dec 06 2011 08:21AM (ypodpaly) John Rice High Resolution X-Ray cgao,ldelgado,rice,ypodpaly HXR yes 32 Channels operational,, no safety risk for in-vessel access Apr 14 2011 12:05PM (parker) Ron Parker Hard X-Ray Array faust,parker,schmidt ICRF D-Antenna no secured Apr 14 2011 08:55AM (wukitch) Steve Wukitch D-port antenna wukitch,ylin ICRF E-Antenna no secured Apr 14 2011 08:55AM (wukitch) Steve Wukitch E-port antenna wukitch,ylin ICRF J-Antenna no secured Apr 14 2011 08:56AM (wukitch) Steve Wukitch J-port antenna wukitch,ylin Impurity Spectroscopy yes Being upgraded with better optics and new spectrographs. Dan Miller has primary responsibility. Apr 19 2011 11:46AM (blip) Bruce Lipshultz Measurement of recycling light and impurity source rates at multiple surfaces around the tokamak blip,miller Laser Blow-Off yes Operational and tested Jan 06 2012 03:50PM (g) Martin Greenwald Impurity Injection System g,nthoward Lower Hybrid no LH HV Breaker Opened and Tagged, TPS Upgrade Underway Nov 10 2011 03:51PM (dterry) Ron Parker Lower Hybrid dterry,parker,wallaceg Lower Hybrid Reflectometer no off Apr 15 2011 08:24AM (dominguez) Arturo Dominguez Lower Hybrid Reflectometer dominguez,marmar,parker,sgbaek LoWEUS yes LoWEUS working with the shot cycle. Viewing Mo line-emission normally covered by McPherson. Raw data only in tree. Dec 01 2011 02:54PM (mlreinke) Matthew L. Reinke Long Wavelength Extreme Ultraviolet Spectrometer markchil,mlreinke LPI no Beam line removed May 30 2008 02:09PM (bose) Earl Marmar Lithium Pellet Injector bose,marmar Ly-alpha no Midplane Lyman awaiting first plasma. B-PORT and LEDGE arrays installed but do not yet have amplifiers hooked up. Nov 17 2011 02:42PM (mlreinke) Matt Reinke Lyman alpha cameras faustian,labombard,mlreinke Magnetics yes   Dec 01 2011 11:51AM (g) Robert Granetz Bp coils and flux loops for equilibrium control granetz,wolfe McPherson no new turbo pump, installed, McP pumping down. Almost ready to open to machine. Dec 06 2011 12:16PM (mlreinke) Jim Terry VUV Spectrometer markchil,mlreinke,terry Michelson yes Front end at 4.5e-8 T. Reduced speed for initial operation. Nov 30 2011 07:51AM (hubbard) Amanda Hubbard ECE Te Profiles hubbard,schmidt MKS yes   Dec 02 2011 12:27PM (toland) Brian LaBombard Baratron pressure gauges labombard,toland MLP no System is in edge lab. Version 2 drivers ready to test. Needs a student to help work on it. Jul 14 2009 09:20PM (labombard) Brian LaBombard Mirror Langmuir Probe Electronics System labombard MSE no 1/3/2011: push-pull mechanism broken. MSE inoperative Jan 03 2012 11:47AM (sscott) Steve Scott Motional Stark Effect jinseok,sscott Neutrons yes High voltage is on. We're ready for plasma. Nov 21 2011 12:58PM (fiore) Catherine Fiore Neutron Detectors fiore Neuts and Hards yes All detectors Powered On --- Waiting for neutrons for calibration Nov 22 2011 01:05PM (irby) Jim Irby X-Ray/Neutron Detectors at K-Hor irby NINJA yes C-bottom and new F-bottom system ready. Dec 02 2011 12:28PM (toland) Brian LaBombard NINJA gas puff labombard,terry,toland PCI yes Operational. Nov 30 2011 12:45PM (ntsujii) Miklos Porkolab Phase Contrast Imaging emd,ennever,ntsujii,porkolab Penning Gauges yes Operational. High voltage comes on during INIT and off at RECOOL. Dec 09 2011 09:48AM (labombard) Brian LaBombard Penning Ionization Gauges labombard Plasma TV yes WIDE1, WIDE2 (chan 33), DANT, JANT and DIV are operational. Jul 01 2009 09:46AM (terry) Jim Terry Video of plasma via several cameras dekow,irby,terry,wolfe Polarimeter yes 3 chords operational but with high noise level Jan 06 2012 04:22PM (irby) Jim Irby C-Mod Polarimeter irby Power - Alternator Air Switch yes   Jan 09 2012 06:33AM (dekow) Gary Dekow feeds all the other supplies cochran,dekow,dterry,irby Power - PEI yes   Jan 09 2012 06:33AM (dekow) Gary Dekow PEI System cochran,dekow,dterry,irby Power - TMX yes   Jan 09 2012 06:33AM (dekow) Gary Dekow Ef2s,. EFCs and A-Coils byford,cochran,dekow,dterry,irby Power Systems yes   Jan 09 2012 06:33AM (dekow) Jim Irby C-Mod Magnet Supplies byford,cochran,dekow,dterry,irby Probe Array - ISD yes Operational, except for probe #1 (open circuit) and probe #16 (not installed). Dec 09 2011 09:50AM (labombard) Brian Labombard Inner Lower Divertor Probe Array labombard Probe Array - LH yes Operational, except for bottom-D probe (open circuit). Dec 09 2011 09:52AM (labombard) Brian LaBombard Lower Hybrid Probe Array labombard Probe Array - OSD yes F-divertor ok. J-divertor ok, except for JDIV_06 which is shorted out. Dec 09 2011 09:54AM (labombard) Brian LaBombard Outer Lower Divertor Probe Array (F and J) labombard Probe Array - UDIV yes Operational except for probes #4, 5 and 13 (open) Dec 09 2011 09:56AM (labombard) Brian LaBombard Upper Divertor Probe Array labombard Reflectometer yes As of 1120105xxx, all channels are connected Jan 05 2012 09:14AM (dominguez) Earl Marmar Reflectometer dominguez,marmar Scanning Probe - ASP yes Ion Sensitive Probe head installed. Testing in piggy-back mode. Dec 20 2011 12:33PM (labombard) Brian LaBombard A-Port Scanning Probe labombard Scanning Probe - FSP yes Operational. Dec 09 2011 09:57AM (labombard) Brian LaBombard F-Port Scanning Probe labombard Scanning Probe - WASP yes A-port WASP is operational. K-port WASP is dead (all probes melted together). Dec 09 2011 09:58AM (labombard) Brian LaBombard Inner Wall Scanning Probe labombard,nsmick Shoelace Antenna yes Fixed frequency operation available (100kHz) at moderate power (< 0.5kW). Otherwise in receiver mode. Jan 11 2012 11:50AM (labombard) Brian LaBombard High-k active MHD antenna, for QCM, WCM studies golfit,labombard SOL reflectometer yes c-port waveguides operational, h-port waveguides are not. Nov 29 2011 12:04PM (cornwall) Cornwall Lau SOL reflectometer cornwall,wukitch,ylin Sparker yes New Type II sparker replaced Type I on 11/17/2011 Nov 23 2011 08:53AM (irby) Jim Irby Field Emission Preionization for C-Mod dekow,irby,parkin Surface Science Station no SSS is up to air, no safety issues Apr 14 2011 12:06PM (ochoukov) Bruce Lipschultz Radially scanning probe located on K-port blip,ochoukov TCI yes TCI Operational. Density feedback operational. Nov 10 2011 11:47AM (irby) Jim Irby Two-Color Interferometer irby,murray TS - Core no All lasers are shut down and cannot be fired into cell. Apr 11 2011 01:20PM (jwhughes) Jerry Hughes Core Thomson scattering jrwalk,jwhughes,yma TS - Edge no All lasers are shut down and cannot be fired into cell. Apr 11 2011 01:20PM (jwhughes) Jerry Hughes Millimeter resolution edge Thomson scattering jrwalk,jwhughes,yma Vispec no 350 and 670 nm, 4 spatial channels Nov 28 2007 09:58AM (agraf) Alex Graf Visible Spectrometer agraf XEUS yes XEUS working with the shot cycle. Viewing low-Z emission. Dec 01 2011 02:55PM (mlreinke) Matt Reinke X-ray Extended Ultraviolet Spectrometer markchil,mlreinke XTOMO yes ARRAY1->4 waiting first plasma, new core ARRAY5 needs debugging and the calibration data checked Nov 17 2011 02:44PM (mlreinke) Robert Granetz X-Ray Tomography faustian,granetz,mlreinke