Miniproposals

Miniproposal: 709 Date Filed: 6/22/2012 Title: Pedestal profile and fluctuation evolution in ELMy H-Mode First Author: Ahmed Diallo Session Leader: Ahmed Diallo (shots 1-28)

Engineering Operator Run Comment

July 31 2012

Session Leader Plans

Entered: Jul 30 2012 03:54:33:790PM

Author: Ahmed Diallo

1) Load 1120621025 (3 shots) 1. Achieve targetnl01 = 1.0 x 10^{20} m{-2} 2. Start ICRF (3 MW) at 600 ms 3. ICRF (3 MW) 4. Verify passive diagnostics 2) Establish good baseline with active diagnostics (4 shots) 1. CXRS 2. GPI start puff at 1.2 s 3. Plunge probe at 1.2 s 3) Trying the LH for collisionality scan 1. Start LH (700 KW) at 1.0 s (2 shots) 1. Stop probe and puffs 2. If LH density depletion is successful (4 shots) 1. Initiate probe plunges at different times (TBD) 2. start active diagnostics with GPI puffs (TBD) 4) Start density scans 1. nl04 = 0.9 to 0.5 in steps of 0.1 (2 shots each) 5) Find as suitable range of nl04 for ELMy H-mode (10 shots) 1. repeat with constant ICRF 2. Try LH at 1.0 s

Physics Operators Plans

Entered: Jul 30 2012 03:00:13:377PM

Author: Jerry Hughes

----------------- Engineering Setup ----------------- Run begins at 09:00 and ends nominally at 17:00. ***Extended run possible*** Run may be extended to 18:00 if shots are lost earlier in the day. This will be at the discretion of Wolfe. Power systems as on: 1120621025 Acoil: +Dtop -Dbot -Jtop +Jbot (standard) Hybrid Enabled Gas setup: Fill B-Top with 6 psi D2 Hybrid enabled (PG4) fill B-side lower with 1 psi Ar Hybrid DISABLED (PG1) leave B-side upper as is Hybrid DISABLED (PG2) fill B-main (C-side) with 40 psi D2 Hybrid enabled (PG3) fill H-bottom with 4 psi Ne Hybrid DISABLED (PG5) fill C-port NINJA plenum with 10 psi He DISABLED fill other NINJA plenum with 10psi D2 DISABLED Enable gate-valves and shutters: ECE, VUV, HiREX Sr, Xeus/LoWEUS Leave z-bolo shutter as is (should be open) Torvac gatevalve toggle (yes/no): no Boronization(yes/no): YES, overnight (use recipe from 1120725) Overnight ECDC (yes/no): 2 hours in He following boronization ICRF(yes/no): yes, all transmitters available LH(yes/no): yes, up to 600 kW, n//=1.9 Cryopump (yes/no): no DNB (yes/no): no Vessel temperature: 35/35/35 ----------------------------- post-boronization ECDC Parameters ------------------------------ gas and pressure: He at 5e-5 Torr sweep: 44/45/103 cm scan: 20/120 s duration: 2 hours -------------------------------- Shot plan: Load from 1120621025. Raise target nl04 to 1e20. PO changes will mostly consist of target density changes, shape tweaks if necessary. Field may be adjusted slightly for ECE coverage. SL will direct changes to ICRF, LHRF programs, puff timing for NINJA based diagnostics.

Session Leader Summaries

Entered: Aug 2 2012 07:50:11:237PM

Author: Ahmed Diallo

Summary of MP709 The day started with many disruptions, which we later attributed to magnetic issues. Once we sorted out the magnetic issues, H/(H+D) ratio was observed to be elevated (>30%) making H-mode regime less sustainable. After multiple attempts at reducing this ratio, we decided (through the relaxation of the shape to insure good ICRF coupling) to dedicate the remaining discharges to the restoration of H-D fraction to manageable levels. It is worth noting that during the course of the day, one of the port of the ICRF became unavailable. The H-D fraction was ultimately reduced during the discharge cleaning session. Shot 26 turned out to be the best shot with an EDA-H mode (with a clear QCM mode), but we were unable to achieve the shape required by the MP. Overall, the machine was not in a good condition to reliably pursue the MP goals, and we hope to have another chance to effectively start and complete MP709.

Physics Operator Summaries

Entered: Aug 1 2012 06:46:50:530AM

Author: Jerry Hughes

This was a tough one. The run followed a Friday run with H majority discharges, and then a weekend of ECDC in D. We had assumed we might have a little excess H left over in our initial discharges, but in fact in our early discharges today we saw H/(H+D) hit levels of 30--50%. Eventually we determined that the B-side plenum was delivering significant concentrations of H, because it had not been purged sufficiently well. After 2 purges of B-side during the run, we began to see the H fraction drop, and in the end we were able to run plasmas again with H/(H+D) between 5 and 8%. However, during most of the day, the D(H) heating scheme was not workable, and no progress toward physics goals could be achieved. LESSON: When making a main ion species changeover, have B-side (and B-top, if applicable) purged and filled 5 TIMES before running a plasma. Unfortunately because we were puffing a mix of H and D early on, we don't have a good sense of what the residual H in the walls looked like due to high power ops in H on Friday. We also don't know whether there might be some excess H still trapped under the boronization layer in places. The H contamination in B-side would have been identified earlier in the day, but we had a number of other issues that distracted us. On shot 4 there was a baseline offset warning for F12. After this, EFIT reported very high chi^2 values for a number of coils. We lost a lot of time while Wolfe and Granetz examined magnetics signals for anomalies. Nothing clear was seen, but it was obvious something was wrong, as MFLUX showed fields on startup that never should have allowed a clean breakdown. In the end, Granetz found some dungarees and had a cell access to zap F12, which had in fact developed a high resistance. While all this was going on, Bill Cochran was dealing with voltage spikes on a TF2 converter. I do not think these were causally connected. With these problem fixed, we then had a few shots (8--11) with poor vertical control. Reloading a known good shot from 1120725, I found that it disrupted in flattop. The control issue stemmed from a large difference between the voltage measured on the OH2L supply and the voltage on the bus. Wolfe spotted this, recognized the behavior from a previous run, and called Bill Cochran in to fix it. This was successful, and shot 13 ran full length without a disruption. Now it was well after lunch, and we had the high H to contend with. We had been thinking all morning that H was just stuck in the walls. However, we began to notice a correlation between the H/(H+D) signal and the B-side puff. The B-side plenum had been purged and refilled once prior to the run. We had it purged a second time following shot 14 (along with B-top). There was still plenty of H, so we purged a again after shot 15. Shot 16 was a gas test with all valves other than B-side disabled. The RGA registered mostly D. Shot 17 was a plasma, with H/(H+D) down at the 20% level, and no bump up associated with puffing. After shot 17, the H/(H+D) came down steadily with each shot. Unfortunately, by this time (14:30), J-port was out of commission and required a 30--60 minute repair. D+E were operable, but difficult to tune, and weren't doing much to heat, given that H/(H+D) was still on the high side. At around 15:00 we concluded that we had little hope of getting good pedestal data in the JFT-2M shape, and we decided to condition the machine for the remainder of the run. I dialed up a standard equilibrium from 1120725 and Wukitch started putting in joules from D+E. This was successful. H/(H+D) continued to drop and reached acceptable levels by 17:00. We put a little power on the upper divertor by sweeping SSEP negative, and saw an increase in H/(H+D). This did not persist when we went back to LSN. One other thing to note is that when we operated with the strike point in the slot today, injections were commonplace. Fe was the dominant impurity. This was an issue on some shots on 1120621 as well. The divertor floor may prove to be more inhospitable this campaign than in the past.

Session Leader Comments
Jul 31 2012 09:17:36:633AM	1120731002	Ahmed Diallo	Starting part 1 of shot plan: Reproduce target shot 1120621025 Result: RF struggling. need more cleaning. Disrupts at 0.8 s To be repeated.
Jul 31 2012 09:36:35:053AM	1120731003	Ahmed Diallo	Achieve reference shot 1120621025 result: Fizzle.
Jul 31 2012 09:59:53:217AM	1120731004	Ahmed Diallo	Repeat. Disrupts at 0.7 s.
Jul 31 2012 10:26:17:753AM	1120731005	Ahmed Diallo	Better discharge (extended to 1 s before disrupting)
Jul 31 2012 11:04:06:920AM	1120731006	Ahmed Diallo	H/(D+H) is too high and could be causing the difficulties encountered. Revert to a more conventional shaping to ensure a good and long discharges.
Jul 31 2012 11:40:15:190AM	1120731008	Ahmed Diallo	Repeat after changes in the strike point position.
Jul 31 2012 12:00:23:280PM	1120731010	Ahmed Diallo	Still struggling for good discharge
Jul 31 2012 12:54:24:273PM	1120731011	Ahmed Diallo	Attempt a different discharge for 06-21 for sanity check
Jul 31 2012 01:04:47:150PM	1120731013	Ahmed Diallo	First full length discharge! good
Jul 31 2012 01:28:31:530PM	1120731014	Ahmed Diallo	Start ICRF earlier at 0.6s and tweak shaping (see PO entry for details). Results: Good but H/(H+D) is still high. Need improvements for good H-mode.
Jul 31 2012 02:23:59:013PM	1120731015	Ahmed Diallo	Changing the shaping parameter to approach the target shape (see changes made by PO). results: Good repeat. Still elevated H/H+D
Jul 31 2012 02:39:59:850PM	1120731017	Ahmed Diallo	Repeat: H/(H+D) fraction at 20%.
Jul 31 2012 03:00:52:980PM	1120731018	Ahmed Diallo	Changing the shape back to reference shot. One of the ICRF (J) strap is down. Aim for 2MW ICRF Results: First good try at the targeted shaped. Good but Too many trips in ICRF.
Jul 31 2012 03:13:32:220PM	1120731019	Ahmed Diallo	Repeat with steady ICRF Results: Okay! Fewer trips.
Jul 31 2012 03:37:32:767PM	1120731021	Ahmed Diallo	Decision was made. Continue running with ICRF with relaxed plasma shaping to reduce the H/(H+D) fraction.

Physics Operator Comments
Jul 31 2012 08:24:45:823AM	1120731001	Jerry Hughes	Shot 1 Load from 1120621025. Active segment is 4! In seg 4, raise nl04 program to 1e20 at 0.6s. Now import seg 1 from 1120725002 into seg 1 (a recent good 5.4T, D2, post-boronization, non-cryopump startup) Load at 30-Jul-2012 15:46:58.00 Open tree /home/jwhughes/physop/pcs_scratch -1 Open tree done Result: No power test shot was taken by engineering well before I arrived. Successful cycle test.
Jul 31 2012 09:18:22:123AM	1120731002	Jerry Hughes	Shot 2. Plasma attempt based on 1120621025 with increased nl04. Result: More or less reaches target density. Many injections early. Disrupts at 0.8s following a large Prad increase. Chalk it up to boronization cleanup?
Jul 31 2012 09:31:45:823AM	1120731003	Jerry Hughes	Shot 3. Changes: Reduce pre-puff from 17ms to 15ms for post-disruption startup. Load at 31-Jul-2012 09:18:35.00 Open tree /home/jwhughes/physop/pcs_scratch -1 Open tree done Result: Fizzle. Pressure was a bit higher than on shot 2, but not extremely so. Bz is a bit negative.
Jul 31 2012 09:45:44:713AM	1120731004	Jerry Hughes	Shot 4 Changes: In seg 1, change IC_EF4U from -1300A to -1290A. Load at 31-Jul-2012 09:33:03.00 Open tree /home/jwhughes/physop/pcs_scratch -1 Open tree done Result: Disruption at 0.71s this time. Early injections improved, I think. There is still a substantial one before the RF comes on, and some after.
Jul 31 2012 10:27:55:137AM	1120731005	Jerry Hughes	Shot 5: Bill Cochran having a power room access. PO changes: In seg 4, change RCUR in flattop from 0.660 to 0.662 Load at 31-Jul-2012 09:52:08.00 Open tree /home/jwhughes/physop/pcs_scratch -1 Open tree done Result: Made it a bit farther. Disruption at 0.97s. Interesting. EFIT suggests the strike is on the EF1 corner. (although EFIT has huge chisquared on this shot . . . not clear why) This is where we saw I-modes before, and there does appear to be a Te pedestal in the Thomson, and possibly WCMs on reflectometry.
Jul 31 2012 10:39:43:890AM	1120731006	Jerry Hughes	Shot 6. Wolfe and Granetz can not easily explain the large chi squared errors on EFIT for shot 5. Flux loop signals look reasonable. Cautiously, we will proceed. Changes: In seg 4, Get RCUR up to 0.662 by 0.6s. Change RXL from -0.045 to -0.040. (Trying to move strike point more outboard) Load at 31-Jul-2012 10:25:51.00 Open tree /home/jwhughes/physop/pcs_scratch -1 Open tree done Result: Still disrupting. There is still a disconnect between magnetics and reality. Also there are persistent voltage spikes on the TF2 converter that Bill Cochran is diagnosing.
Jul 31 2012 11:09:35:983AM	1120731007	Jerry Hughes	Shot 7 Change to Seg 4: RXL from -0.04 to -0.03. Try to get the X/strike in a more conventional location and see if this can be made to run through. Load at 31-Jul-2012 11:01:36.00 Open tree /home/jwhughes/physop/pcs_scratch -1 Open tree done Result: Fizzle.
Jul 31 2012 11:34:27:923AM	1120731008	Jerry Hughes	Shot 8. Granetz has been in to zap F12. Change: Increase PG4 pre-puff form 15ms to 16ms. Load at 31-Jul-2012 11:18:36.00 Open tree /home/jwhughes/physop/pcs_scratch -1 Open tree done Result: Pretty early disruption, well before RF. H/(H+D) remains high. (near 30% even with no RF)
Jul 31 2012 11:50:53:440AM	1120731009	Jerry Hughes	Shot 9. No PO changes. Result: Basically a repeat of 8, with the disruptiojn in the same place. Vertical control is getting lost right as the plasma comes off the inner wall. Not clear why. The shape is not too abnormal and the n/ncrit is 0.85.
Jul 31 2012 11:58:54:260AM	1120731010	Jerry Hughes	Shot 10. Changes: In seg 4, slow down ZCUR, RXL ramps between 0.24s and 0.4s. Also hold CLEARIN fixed at 0.005 until 0.45s. Load at 31-Jul-2012 11:49:10.00 Open tree /home/jwhughes/physop/pcs_scratch -1 Open tree done Result: runs into vertical control issues even earlier. Disrupts again.
Jul 31 2012 12:31:45:357PM	1120731011	Jerry Hughes	Shot 11. Let's try to reproduce a good shot from July 25 (EDA H-modes) Import seg 2 from 1120725009 into seg 2. Turn off seg 4 and turn ON seg2. Change PG1 program in Seg 2 to be on for 50ms at 100V starting at 0.3s. Load at 31-Jul-2012 12:02:37.00 Open tree /home/jwhughes/physop/pcs_scratch -1 Open tree done results: Disrupts later. Still thrashing at segment switch.
Jul 31 2012 12:44:22:950PM	1120731012	Jerry Hughes	Shot 12. Change: In seg 1, change BR_0 offset from 0.001 to 0.002, at Wolfe's suggestion. Load at 31-Jul-2012 12:22:20.00 Open tree /home/jwhughes/physop/pcs_scratch -1 Open tree done Result: Fizzle. Fields look okay, but are they correct? It turns out that we have a new issue, spotted again by Wolfe, whereby the OH2L power supply voltage reads differently from the bus voltage. Cochran is in to diagnose and fix.
Jul 31 2012 12:54:58:280PM	1120731013	Jerry Hughes	Shot 13. Bill Cochran has returned from the power room. We will retry. Change: Reverse the BR_0 offset. 0.002-->0.001. Load at 31-Jul-2012 12:50:54.00 Open tree /home/jwhughes/physop/pcs_scratch -1 Open tree done Result: Full length plasma!
Jul 31 2012 01:25:59:767PM	1120731014	Jerry Hughes	Shot 14 Change: in seg 2, change RXL from 0.000 to -0.005 Load at 31-Jul-2012 13:06:50.00 Open tree /home/jwhughes/physop/pcs_scratch -1 Open tree done Other changes: More joules from RF. Result: Disrupt at 1.5s. Very ugly plasma with bad RF absorption. We are still suspicous about the amount of H in the plasma. Ron will purge both B-top and B-side and refill with D2 before next shot.
Jul 31 2012 01:45:15:403PM	1120731015	Jerry Hughes	Shot 15. In seg 2 change RXL from -0.005 to -0.010 . Change ZXL from 0.005 to -0.005 Change ZCUR from -0.01 to -0.015 Load at 31-Jul-2012 13:30:23.00 Open tree /home/jwhughes/physop/pcs_scratch -1 Open tree done Result: Plasma into rampdown. H-modes.
Jul 31 2012 02:01:19:260PM	1120731016	Jerry Hughes	Shot 16. H/D continues to track the main gas puff. Ron is doing a 2nd purge and refill with D2. We will take a gas test shot next and look at the RGA. In seg 1 set PG3 to 100V for 120ms Load at 31-Jul-2012 13:51:26.00 Open tree /home/jwhughes/physop/pcs_scratch -1 Open tree done No power shot. Disable everything but B-main. Result: RGA reads out mostly 4, some 3 and 2. Looks like a proper D2 fill
Jul 31 2012 02:37:26:007PM	1120731017	Jerry Hughes	Shot 17. Delay due to breaker replacement (fast!). Load from 1120731015. Load at 31-Jul-2012 14:03:52.00 Open tree /home/jwhughes/physop/pcs_scratch -1 Open tree done Result: Plasma into rampdown. Some power from D+E (FMIT3 was down) A little extra B-side gas comes in at ~1s. H/D definitely does not correlate with the main fueling puff now. Perhaps the 2nd purge was what was needed.
Jul 31 2012 02:51:39:500PM	1120731018	Jerry Hughes	Shot 18 J-port will take some time to fix, so we will proceed with D+E. Go back to JFT-2M shape. Turn OFF seg 2, turn ON seg 4. Load at 31-Jul-2012 14:39:52.00 Open tree /home/jwhughes/physop/pcs_scratch -1 Open tree done Result: Plasma into rampdown. Many H-modes.
Jul 31 2012 03:12:18:967PM	1120731019	Jerry Hughes	Shot 19. No PO changes. Result: Somewhat improved power, some longer H-modes. Still have Fe injections, which seems to be associated with the slot. H/(H+D) is down to the 15% level throughout the shot.
Jul 31 2012 03:20:48:417PM	1120731020	Jerry Hughes	Shot 20. Changes: Sweep RXL through flattop from -0.02 to -0.03. Load at 31-Jul-2012 15:10:06.00 Open tree /home/jwhughes/physop/pcs_scratch -1 Open tree done Result: Plasma into rampdown. Multiple H-modes. Bad matching on RF.
Jul 31 2012 03:35:22:393PM	1120731021	Jerry Hughes	Shot 21. Want to get back to the original JFT-2M target with 2cm. No RXL sweep. This may provide a steadier target for the ICRF. Import seg 4 from 1120731004 into seg 4. Load at 31-Jul-2012 15:25:30.00 Open tree /home/jwhughes/physop/pcs_scratch -1 Open tree done Result: The changes weren't very helpful. Still a large number of H-modes, radiative.
Jul 31 2012 03:48:51:687PM	1120731022	Jerry Hughes	Shot 22. After a high-level strategy meeting, we have decided to just switch to RF/wall conditioning, since the H/D is showing positive signs of decrease. We will try to maximize the number of Js in from D+E by running a more standard shape. Turn OFF seg4 and turn ON seg2. Import seg2 from 1120731013 into seg2. Load at 31-Jul-2012 15:39:01.00 Open tree /home/jwhughes/physop/pcs_scratch -1 Open tree done Result: Good steady RF. L-mode most of the way, short H-mode. H/(H+D)~12%. Heating is imporving.
Jul 31 2012 04:10:06:440PM	1120731023	Jerry Hughes	Shot 23. Changes: In seg 2 raise nl04 from 9.5e19 to 10.5e19. Load at 31-Jul-2012 15:51:57.00 Open tree /home/jwhughes/physop/pcs_scratch -1 Open tree done Result: Target nl04 looks good. Plasma just into rampdown. H/(H+D) down to ~11%.
Jul 31 2012 04:25:01:700PM	1120731024	Jerry Hughes	Shot 24. Inserted a ZCUR ramp from -0.01 to 0.00 and back during flattop. This should sweep SSEP toward and perhaps through 0. Load at 31-Jul-2012 16:09:29.00 Open tree /home/jwhughes/physop/pcs_scratch -1 Open tree done Result: More H-modes. This is the double null effect.
Jul 31 2012 04:37:53:290PM	1120731025	Jerry Hughes	Shot 25 Removed the ZCUR ramp in seg2 and lowered DC ZCUR by 2mm. Load at 31-Jul-2012 16:22:40.00 Open tree /home/jwhughes/physop/pcs_scratch -1 Open tree done Result: Mostly L-mode. H/(H+D) down to ~8--9%. Looks like we may be able to stop at 5pm.
Jul 31 2012 04:50:20:550PM	1120731026	Jerry Hughes	Shot 26. Try to run a mostly USN case. In seg2, raise ZCUR from -0.012 to +0.005 Load at 31-Jul-2012 16:36:07.00 Open tree /home/jwhughes/physop/pcs_scratch -1 Open tree done Result: Biased slightly USN, so we get some flux on the upper plate, but we still get an H/(H+D). Looks like it's up again slightly.
Jul 31 2012 05:01:11:313PM	1120731027	Jerry Hughes	Shot 27. In seg2 raise nl04 from 1.05e20 to 1.15e20. Load at 31-Jul-2012 16:51:16.00 Open tree /home/jwhughes/physop/pcs_scratch -1 Open tree done Result: H/(H+D) looks very manageable. There is heating.
Jul 31 2012 05:18:42:807PM	1120731028	Jerry Hughes	Shot 28. Changes: Put ZCUR back at -0.012 to go LSN again. Also add anegative ramp to RXL and ZXL throughout flattop. Load at 31-Jul-2012 17:00:49.00 Open tree /home/jwhughes/physop/pcs_scratch -1 Open tree done Result: H/(H+D) is between 5 and 8%.

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	07:17:41:267AM	Test	Ok	Shot Cycle Test
2	09:04:23:070AM	Plasma	Ok
3	09:21:41:333AM	Plasma	Ok
4	09:36:03:160AM	Plasma	Ok
5	09:55:23:790AM	Plasma	Ok
6	10:27:11:207AM	Plasma	Ok
7	11:02:19:977AM	Plasma	Ok
8	11:20:18:547AM	Plasma	Ok
9	11:34:12:527AM	Plasma	Ok
10	11:49:58:697AM	Plasma	Ok
11	12:03:34:437PM	Plasma	Ok
12	12:24:00:387PM	Plasma	Ok
13	12:52:16:607PM	Plasma	Ok
14	01:10:01:727PM	Plasma	Ok
15	01:32:01:730PM	Plasma	Ok
16	01:54:11:017PM	Test	Ok	Gas test, No Power Shot
17	02:21:08:800PM	Plasma	Ok
18	02:44:01:443PM	Plasma	Ok
19	02:57:14:937PM	Plasma	Ok
20	03:10:58:400PM	Plasma	Ok
21	03:25:58:620PM	Plasma	Ok
22	03:39:40:400PM	Plasma	Ok
23	03:54:47:817PM	Plasma	Ok
24	04:10:02:393PM	Plasma	Ok
25	04:23:39:170PM	Plasma	Ok
26	04:38:04:617PM	Plasma	Ok
27	04:53:36:133PM	Plasma	Ok
28	05:06:57:653PM	Plasma	Ok

System Availability

Jul 31 2012 07:17:23:113AM

System Available Comment Availability Changed Owner Description Who Can Change Active MHD no secured - tagged out Jun 2 2008 11:03:58:433AM (sears) Joe Snipes Active MHD Antenna golfit BES yes BES system is online Nov 22 2011 02:21:12:050PM (bespam) Bill Rowan Beam Emission Spectroscopy bespam,liao,rowan Bolometers yes Midplane diodes functioning properly. Midplane bolometers working and calibrated. DIV bolometers installed but not yet toaster calibrated Apr 20 2012 09:57:29:520AM (mlreinke) Matt Reinke Bolometers hutch,mlreinke Boronization yes   Jun 15 2012 05:02:46:313PM (dekow) Jim Irby Boronization dekow,irby CECE yes The system is currently operational for Te tilde measurement. Talk to Choongki about the current configuration Jul 3 2012 04:38:00:317PM (nthoward) Anne White Correlation ECE nthoward,sck83,whitea CNPA yes Multiple channel CNPA available, no safety risk for in-vessel access Apr 14 2011 12:01:59:693PM (parker) Ron Parker Compact Neutral Analyzer parker Cryopump - Upper Divertor yes   Jun 15 2012 05:02:31:550PM (dekow) Brian LaBombard Upper Divertor Cryopump dekow,irby,labombard CXRS yes core-CXRS system is online Nov 22 2011 02:21:22:280PM (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 11:44:46:247AM (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 1 2009 09:45:41:090AM (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 5 2011 02:41:42:867PM (marmar) Earl Marmar Visible Bremsstrahlung Imaging marmar Disruption Mitigation yes two gas jet valves active as of Feb 2012 May 15 2012 10:09:23:597AM (granetz) Robert Granetz Gas Jet granetz,whyte Divertor IR no   Mar 6 2007 10:50:41:677AM  Glen Wurden Divertor IR Digital Video gwurden,terry Divertor IR Spectroscopy no   Mar 6 2007 10:51:39:897AM  Glen Wurden Divertor IR Spectroscopy gwurden,terry DMBolo AXUV diodes yes Diodes are taking usable data. Not all post-processing code is working yet. Feb 1 2012 01:24:23:953PM (golynyk) Geoff Olynyk Set of six AXUV diodes in a toroidal array of midplane wall boxes. golynyk,granetz,mlreinke,whyte DNB yes "The beam could break at any moment." May 15 2012 10:09:52:470AM (granetz) Robert Granetz Diagnostic Neutral Beam dterry,granetz,mochung ECDC yes   Apr 26 2012 03:23:19:057PM (dekow) Jim Irby 2.45 GHz, 3 kW, discharge cleaning system dekow,irby,pfeiffer FRC-ECE yes FRC-ECE is online May 14 2012 11:53:01:693AM (bespam) Perry Phillips Heterodyne ECE-32 channels bespam,liao,phillips,rowan,whitea FTCI yes System Operational May 14 2012 11:50:45:590AM (irby) Jim Irby Fast two-color interferometer irby G-Side Ratiomatic yes Installed April 25,2012. New controller installed 5/29/2012 Jun 7 2012 10:40:00:957AM (toland) Brian LaBombard G-side ratiomatic ionization gauge labombard,toland Glow Discharge no HV cables disconnected and power supplies off. Electrical plugs have been disconnected, capped and red tagged. Mar 5 2012 10:21:53:460AM (dekow) Jim Irby 1 kV, 5 A, glow discharge system dekow,dterry,irby GPC yes Operational Apr 27 2012 07:41:46:907AM (hubbard) Amanda Hubbard ECE Polychromater hubbard GPC2 yes Operational Apr 27 2012 07:42:03:317AM (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 1 2009 09:45:50:933AM (terry) Jim Terry Gas Puff Imaging terry,zweben H/D yes system is functional and taking data Dec 5 2011 02:42:29:857PM (marmar) Earl Marmar H/D Ratio marmar HEAT yes   Apr 26 2012 03:23:49:607PM (dekow) Gary Dekow - Machine Heaters - burke,dekow Hirex Jr yes Hirex-Jr has been installed Jun 28 2010 03:36:33:420PM (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 6 2011 08:21:02:453AM (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 12:05:24:810PM (parker) Ron Parker Hard X-Ray Array faust,parker,schmidt ICRF D-Antenna yes   May 31 2012 09:20:06:827AM (wukitch) Steve Wukitch D-port antenna wukitch,ylin ICRF E-Antenna yes   May 31 2012 09:19:57:640AM (wukitch) Steve Wukitch E-port antenna wukitch,ylin ICRF J-Antenna yes   May 31 2012 09:19:47:443AM (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 11:46:02:193AM (blip) Bruce Lipshultz Measurement of recycling light and impurity source rates at multiple surfaces around the tokamak blip,miller Laser Blow-Off yes Pumped Down, Laser has not yet been tested but otherwise operational May 14 2012 04:31:17:037PM (nthoward) Martin Greenwald Impurity Injection System g,nthoward Lower Hybrid yes LH is now available for plasma operation up to ~900 kW net power. Jul 3 2012 02:50:00:693PM (wallaceg) Ron Parker Lower Hybrid dterry,parker,wallaceg Lower Hybrid Reflectometer no off Apr 15 2011 08:24:27:930AM (dominguez) Arturo Dominguez Lower Hybrid Reflectometer dominguez,marmar,parker,sgbaek LoWEUS yes LoWEUS viewing the 10-30 nm region, spectral brightness vs. lambda and time are being stored in tree. Apr 20 2012 10:43:34:077AM (mlreinke) Matthew L. Reinke Long Wavelength Extreme Ultraviolet Spectrometer markchil,mlreinke LPI no Beam line removed May 30 2008 02:09:12:833PM (bose) Earl Marmar Lithium Pellet Injector bose,marmar Ly-alpha no Midplane Lyman-a not functioning. New B-PORT Lyman (BPLY) still being debugged. Jul 12 2012 08:52:28:233AM (mlreinke) Matt Reinke Lyman alpha cameras faustian,labombard,mlreinke Magnetics yes   Dec 1 2011 11:51:51:970AM (g) Robert Granetz Bp coils and flux loops for equilibrium control granetz,wolfe McPherson no McPherson under vacuum but is not run on a day-to-day basis. Can be requested if desired. LoWEUS has taken over as the primary Mo monitor. Jul 12 2012 08:53:14:937AM (mlreinke) Jim Terry VUV Spectrometer markchil,mlreinke,terry Michelson yes Vacuum 3-4e-8 T. Starting with Michelson at reduced speed. Apr 27 2012 07:42:41:960AM (hubbard) Amanda Hubbard ECE Te Profiles hubbard,schmidt MKS yes   Dec 2 2011 12:27:47:163PM (toland) Brian LaBombard Baratron pressure gauges labombard,toland MLP yes Operational. Connected to A-port probe system May 10 2012 08:40:19:910AM (labombard) Brian LaBombard Mirror Langmuir Probe Electronics System labombard MSE yes 2/29/2012 MSE operational. No HV or vacuum safety issues Feb 29 2012 12:26:13:863PM (sscott) Steve Scott Motional Stark Effect jinseok,sscott Neutrons yes Voltage is on for He3 detectors on J port. Remaining voltages will be turned on for the first run. Apr 23 2012 09:31:22:063AM (fiore) Catherine Fiore Neutron Detectors fiore Neuts and Hards yes All detectors Powered On --- Waiting for neutrons for calibration Nov 22 2011 01:05:24:380PM (irby) Jim Irby X-Ray/Neutron Detectors at K-Hor irby NINJA yes C-bottom and new F-bottom system ready. Dec 2 2011 12:28:44:843PM (toland) Brian LaBombard NINJA gas puff labombard,terry,toland PCI yes Operational. Jul 10 2012 07:08:06:883PM (ntsujii) Miklos Porkolab Phase Contrast Imaging emd,ennever,ntsujii,porkolab Penning Gauges yes HV power supplies turned ON in INIT, off in RECOOL May 10 2012 08:41:03:000AM (labombard) Brian LaBombard Penning Ionization Gauges labombard Plasma TV yes WIDE1, WIDE2 (chan 33), DANT, JANT and DIV are operational. Jul 1 2009 09:46:29:543AM (terry) Jim Terry Video of plasma via several cameras dekow,irby,terry,wolfe Polarimeter yes 3 chords operational but with high noise level Jan 6 2012 04:22:20:903PM (irby) Jim Irby C-Mod Polarimeter irby Power - Alternator Air Switch yes   Apr 26 2012 03:24:21:607PM (dekow) Gary Dekow Alternator to Power Room Power Supply Connection cochran,dekow,dterry,irby Power - PEI yes   Apr 26 2012 03:24:41:250PM (dekow) Gary Dekow PEI System cochran,dekow,dterry,irby Power - TMX yes   Apr 26 2012 03:24:57:153PM (dekow) Gary Dekow Ef2s,. EFCs and A-Coils byford,cochran,dekow,dterry,irby Power Systems yes   Apr 26 2012 03:25:14:497PM (dekow) Jim Irby C-Mod Magnet Supplies byford,cochran,dekow,dterry,irby Probe Array - ISD yes Operational. Some dead probes. May 10 2012 08:41:58:120AM (labombard) Brian Labombard Inner Lower Divertor Probe Array labombard Probe Array - LH yes Operational. 4 out of 6 probes working. May 10 2012 08:41:40:557AM (labombard) Brian LaBombard Lower Hybrid Probe Array labombard Probe Array - OSD yes Operational. May 10 2012 08:42:13:733AM (labombard) Brian LaBombard Outer Lower Divertor Probe Array (F and J) labombard Probe Array - UDIV yes Operational. Some dead probes. May 10 2012 08:42:32:663AM (labombard) Brian LaBombard Upper Divertor Probe Array labombard Reflectometer yes On 1120608, the high frequency channels: 112, 140 and the variable, have been disconnected for some troubleshooting. All other channels are connected Jun 14 2012 11:28:59:603AM (dominguez) Earl Marmar Reflectometer dominguez,marmar Scanning Probe - ASP yes Operational. A variety of probe heads are ready for use. May 10 2012 08:43:10:937AM (labombard) Brian LaBombard A-Port Scanning Probe labombard Scanning Probe - FSP yes Operational. May 10 2012 08:43:24:887AM (labombard) Brian LaBombard F-Port Scanning Probe labombard Scanning Probe - WASP no Not functioning. Probe tips are melted. Repair not performed during break. May 10 2012 08:44:43:137AM (labombard) Brian LaBombard Inner Wall Scanning Probe labombard,nsmick Shoelace Antenna yes Operational May 10 2012 08:45:08:320AM (labombard) Brian LaBombard High-k active MHD antenna, for QCM, WCM studies golfit,labombard SOL reflectometer yes c-port (top, middle, bottom) and h-port available. Only 1 of 4 locations can be used for each discharge May 1 2012 04:54:58:820PM (cornwall) Cornwall Lau SOL reflectometer cornwall,wukitch,ylin Sparker yes Sparker Power Supply powered up. Connected at K port using red cable 4/23/12 9:25AM Apr 23 2012 12:06:10:983PM (parkin) Jim Irby Field Emission Preionization for C-Mod dekow,irby,parkin Surface Science Station yes SSS is under vacuum and fully available. Jul 3 2012 02:46:59:753PM (ochoukov) Bruce Lipschultz Radially scanning probe located on K-port blip,ochoukov TCI yes TCI lasers in operation May 14 2012 11:51:18:700AM (irby) Jim Irby Two-Color Interferometer irby,murray TS - Core yes Operating with both lasers, density calibration ongoing. Jul 19 2012 10:20:09:220AM (jrwalk) Jerry Hughes Core Thomson scattering jrwalk,jwhughes,yma TS - Edge yes Operating with both lasers, density calibration ongoing. Jul 19 2012 10:20:28:323AM (jrwalk) Jerry Hughes Millimeter resolution edge Thomson scattering jrwalk,jwhughes,yma Vispec no 350 and 670 nm, 4 spatial channels Nov 28 2007 09:58:35:493AM (agraf) Alex Graf Visible Spectrometer agraf XEUS yes XEUS viewing the 1-6 nm region, spectral brightness vs. lambda and time are being stored in tree. Apr 20 2012 10:43:43:107AM (mlreinke) Matt Reinke X-ray Extended Ultraviolet Spectrometer markchil,mlreinke XTOMO yes ARRAY1->5 available. Specific channels on various arrays display issues. Apr 20 2012 05:36:28:523PM (faustian) Robert Granetz X-Ray Tomography faustian,granetz,mlreinke