Miniproposals

Miniproposal: 564 Date Filed: 7/30/2009 Title: Power requirements for high confinement H-modes and the role of radiated power spatial distribution First Author: Alberto Loarte Session Leader: Matt Reinke (shots 1-28)

Engineering Operator Run Comment

MP564 - Power requirements for high confinement H-modes...

Session Leader Plans

Entered: Oct 26 2009 11:02:57:643AM

Author: Matt Reinke

Run Plan for MP564 - Power requirements for high confinement H-modes and the role of radiated power spatial distribution SL: Loarte/Reinke PO: Rowan/Hutch This run plan covers both 1091019 and 1091020 DIAGNOSTICS: ne/Te tools (TCI,TS, GPC1,2 FRCECE). Will be running at 5.4 T for most of both of the days. VUV/SXR spectroscopy. B-SIDE-LOWER will be impurity puffing but if B-SIDE-UPPER can be made to work for Ar puffs a trace can be used. Reflectometer setup for LH trans region (0.7-1.2 in ELMy and 0.5-1.0 in EDA) LBO (Ca/F2) can fire near the end of the H-mode, but I'll have my eye on the perturbation. NINJA can puff for turbulence/CXRS near the end of the H-mode but will likely need to use it for fueling during high density EDAs (1091020) Divertor IR imaging for heat-flux measurements Have N2, Ne and Ar available during the run w/o a cell access. Start with 1.0 psi Ne in B-SIDE-LOWER. The cryopump will be needed for 1091020 (Tuesday) only. The goal of this experiment is to create impurity seeded EDA and ELMy H-modes with net input power (P_NET=P_TOT-P_RAD) matching unseeded H-modes. Target EDA H-modes were made on 1090902 and the ELMy targets were made on 1090902 and 1090922. 1 MW ICRF ramps will be used to vary P_NET to ensure a good match. The 1090922 run focused on Ne and Ar in the EDA and Ar in the ELMy. This run will finish the Ne pressure scan in ELMy, extend the Ne gas pressure scan in EDA and complete an EDA and ELMy scan of N2 puffing. (most if not all of DAY1) Assuming the high confinement w/ seeding is repeatable, we will then attempt to recover high input power operations at the typical C-Mod ODIV strike point location that has been problematic for FY09/10, then proceed to an ITER shape. From there we will increase current and density (possibly Bt) to maintain the EDA H-mode. As a piggyback on this, we will be monitoring the evolution of the molybdenum vs. RF input Joules for MP568 and at the end of 1091020 will take a few shots at conditions repeating 1090827 and/or 1050610. Will do the ELMy with Ne then N2. Will repeat the H-mode threshold scan shot and two higher unseeded target powers then move to seeding. Ninja puffs allowed in late portion of the shot. 1) Load equilibrium from 1090922021 (JFT-2M shape, nl04=0.5, Ip=800 kA). ICRF ramp from 0.5-3 MW from t=0.8-1.5 sec. Verify similar threshold and proper diagnostic/aux system operations. 2) Change RF timing ICRF ramp 2.0-2.9 MW from t=0.8-0.1.0 sec and 2.9 MW from 1.0-1.5. Repeat, replacing peak power of 2.9 MW to 3.4 MW in RF programming. 3) Enable B-SIDE-LOW 1.5 psi Ne puff from 0.6-0.8 sec. ICRF ramp 2.5-4.0 MW from t=0.8-1.0 sec and 4.0-5.0 MW from t=1.0-1.5 sec. 4) Repeat shot, decreasing Ne pressure to 1.0 and then 0.5 5) Fill B-SIDE-LOW with 3.0 psi N2 and repeat target shot from (3) 6) Move N2 pressure up/down, getting points where the ELMy->ELM-Free and then reducing. Move to seeded EDA H-modes. Start with N2 and then Ne 7) Load equilibrium from 1090922007 (high strike point, nl04=0.8, Ip=800 kA). Run threshold scan with RF from 0.5-3.0 MW from 0.6-1.5 sec. 8) Enable N2 puff, choosing pressure based on knowledge from (5) and (6). Puff from 0.4-0.6 sec. Program ICRF to have 2.5-4.0 MW ramp from 0.6-0.8 and a 4.0-5.0 MW ramp from 0.8-1.5 sec. Scan N2 pressure to get a large range of PRAD/PTOT and H89 -> 1.0. 9) Fill B-SIDE-LOW with 1.5 psi Ne and repeat target from (8). Monitor proper change of radiating species. Repeat until clean Ne puff w/o significant N2 present. Increse Ne pressure to absurd pressure (2.5, 3.5 ->etc.) until L-mode confinement (H89~1.0) is demonstrated. 10) Modify equilibrium to see if we can run a lower strike point with seeding. Load 1090811006, lower Ip to 800 kA. Choose gas species and pressure from earlier shots showing peaking WTH and neutron rate. Modify RF programming to allow for maximum input power. Program ICRF to have 2.5-MAX MW ramp from 0.6-0.8 and remain constant until 1.5 seconds. 11) If (10) is run w/o tungsten injections then keep lower strike point otherwise return to high strike point from earlier. Increase Ip/nl04 ~ 900 kA/0.9 and then ~1.0 MA/1.0, keeping the EDA H-mode. Modify impurity gas pressure to adjust for changes in impurity transport. Move to higher current seeded H-modes to 1) demonstrate seeding at ITER target and/or 2) push high current H-mode performance. These will be moving to high densities that usually lead to neutral pressure limits on the ICRF. To start with, the cyropump will be used with LFS fueling to try and maintain a low pressure. If high current EDA's are not obtainable this way the shape will shifted towards DN and HFS fueling via the NINJA will be added. ***TURN ON CRYO*** 12) Move to ITER shape, loading 1080409016 (Ip=1.35, Bt=5.4, nl04=1.2). Tweak the outer strike point location if (10) was still showing tungsten. Do an RF power scan to get the threshold, ramping from 0.5-3.0 MW from t=0.7-1.15. Alternate starting shot is 1091006025 (Ip=1.25, Bt=5.4, nl04=1.25, fast Ip ramp) 13) Develop seeded H-mode using Ne at a reasonable pressure. Set puff timing to be from 0.5-0.7 sec. ICRF ramp from 2.5-4.0 from 0.7-0.85 and 4.0-5.0 from 0.85-1.2. Ramp power back down from 5.0-1.5 MW from 1.2-1.7 to help avoid disruption in the current ramp down. (These times are for the FY08 target. If using FY09 target, shift all start times back to 0.5 sec.) If this recipe is are not giving reliable target EDA H-modes, develop alternate high current/density target. Starting from ITER targets or 1070829029 increase SSEP to make plasma more DN and use NINJA to fuel from the HFS. 14) Vary the Ne gas pressure to scan PRAD/PTOT, showing both a return to L-mode at high pressure and a return to bad RF/PRAD at low pressure. 15) If time switch, N2 and repeat (14) 16) Return to 1 MA target from (11) and run 2-3 shots showing confinement after a substantial RF input energy.

Physics Operators Plans

Entered: Oct 19 2009 08:17:20:567AM

Author: Bill Rowan

Engineering setup for 1091019 Run Plan for MP564 - Power requirements for high confinement H-modes and the role of radiated power spatial distribution SL: Loarte/Reinke PO: Rowan ----------------- Engineering Setup ----------------- Run begins at 09:00 and ends at 17:00 Power systems as on: 1090922021 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 Ne Hybrid DISABLED (PG1) leave B-side upper with 1 psi Ar Hybrid DISABLED (PG2) fill B-main (C-side) with 40 psi D2 Hybrid enabled (PG3) fill NINJA with 10 psi D2 DISABLED NOTE: Have N2, Ne and Ar available during the run w/o a cell access. Enable gatevalves and shutters: ECE, VUV, Z-bolo Torvac gatevalve toggle (yes/no): no Boronization(yes/no): yes Overnight ECDC (yes/no): yes ICRF(yes/no): yes LH(yes/no): no DNB(yes/no): no Cryopump (yes/no): no Vessel temperature: 35/35/35 ------------------------------ ECDC Parameters (if requested) ------------------------------ gas and pressure: D2 at 2e-4 Torr sweep: 44/45/103 cm scan: 20/120 s

Session Leader Summaries

Entered: Oct 19 2009 07:52:05:430PM

Author: Matt Reinke

A generally successful day. We got a late start (10:30) due to alternator issues and only got 28 shots with 001 being a fizzle. The Ne and N2 EDA H-mode scans were completed (7),(8) and (9). 002-005 where in the "grazing" JFT-2M shape (1)-(6). The post-boronization and now He ECDC led to significant wall fueling. By shot 005 the fueling gas puff was shut off by 0.15 seconds and the target density got nl04~0.7 when we needed it at 0.5 to get good ELMs. We punted to the EDA portion with hopes to return to the ELMy late in the day but we ran out of time and will do it first thing on 1091020. 006 was a threshold scan showing P_LH ~ 0.7 MW from the ICRF (7) and then we started the seeding. This was an EDA H-mode, repeat of 1090922007, Ip=800 kA, nl04=0.8 with a standard shape although the high strike point. 007-018 were Ne seeded 019-028 were N2 seeded We had trouble repeating the high performance seeded Ne shots for awhile and this may have been due to the evolving wall conditions. Something funky was happening on the H-alpha and Lyman-alpha that needs a closer look. By 012 things had cleaned up and we could scan the gas pressure to vary PRAD. We had to add extra puffs after the LH transition because a 4.0 psi puff disrupted the plasma. Shots 012,013, 015, 017 and 018 can be used to as scan of confinement with 018 having a nice time evolving H89 during the shot. The N2 puffing needed to be much more aggressive than the Ne. After messing around with discrete puffs from 019-021 which amounted to little PRAD increase and a hot divertor and choppy RF we switch to steady-state puffs. 022 had 9 psi puff from 0.4-1.0 and showed a fast N2 pumpout after 1.0 seconds. Also the RF power started to become choppy and the confinement degrade (what is cause and effect I don't know) at this time. 023 moved to a 9 psi 0.4-1.5 puff which resulted in a very steady plasma with high confinement (H89~1.8). From there we modulated the pressure with 20 psi being too much. Also, shots 023 and 024 were repeated showing little to no N2 buildup. Shots 023,024,026 and 028 can be used as a scan of confinement.

Physics Operator Summaries

Entered: Oct 20 2009 07:19:05:170AM

Author: Bill Rowan

Physop Summary for 1091019 The experiment was based on MP564 "Power requirements for high confinement H-modes and the role of radiated power spatial distribution." C-Mod ran well today. Two configurations were used, and both were developed during previous runs. The first was the JFT-2M shape for which the model was 1090922021. The other was a more conventional C-Mod shape for which the model was 1090922007. Nitrogen and neon were puffed into the discharges. With the JFT-2M shape, the density was to have been nl_04=0.5e+20. That density was not reached due to wall fueling. The first shot of the day was a fizzle because the prefill was set too high. These can be traced to boronization on Friday (1091016). The only other wall conditioning prior to this run consisted of the usual short post-boronization sessions of He and D2 ECDC. Helium ECDC for the night before the run might have provided better control of density as it did for 1090923. There were spurious injections on several discharges. They may have been responsibile or contributors to early disruptions. Because of the impurity gas puffing, that would be difficulat to sort out. Early disruptions were 014, 025, and 027). There was a delay in starting the run. Quoting Mike Rowell "This morning the alternator drive system failed to start correctly due to a problem with the "soft start " circuit. The problem has been identified and the alternator was successfully restarted @7:20AM. As a result there will be a delay in the start of CMOD operations. We expect the alternator to be ready for CMOD operations run by 10:30 AM." The predicted start time in this message was accurate. The session leader kept excellent notes as the impurity gases were changed and the plenum pressures varied. Look for detail there. An interesting result was the reduction of ICRF faulting on shots with high levels of impurity puffing. May have been coincidence but is probably worth pursuing. Score card 27 plasmas (3 early disruptions due to impurities) 01 fizzle 28 Total

Session Leader Comments
Oct 19 2009 10:36:22:823AM	1091019001	Matt Reinke	Started late (10:30) but first shot was a fizzle :(
Oct 19 2009 10:58:18:783AM	1091019002	Matt Reinke	Lot of outgassing from this shot. The density wasn't under control and only got down to about nl04~0.8. If it doesn't look to be coming down after one or two more shots we'll switch to doing the EDA stuff. WIDE1 looks defocused or possible boronized over. NEXT: Repeat shot.
Oct 19 2009 11:11:49:947AM	1091019003	Matt Reinke	Good threshold shot (1), although for a higher density nl04~0.75. Still don't have density control. NEXT: Move to running the 2.9 MW ICRF pulse from (2). 2.0-2.9 MW from 0.8-1.0 and 2.9 MW from 1.0-1.5 MW.
Oct 19 2009 11:22:58:340AM	1091019004	Matt Reinke	Bad ICRF, no ELMs, still have nl04~0.75 at the LH trans. NEXT: Repeat once more then we'll move the EDA target while walls get degassed.
Oct 19 2009 11:35:45:203AM	1091019005	Matt Reinke	Still no density control, nl04~0.70. This is not giving me what I need so we'll punt to the EDA and come back to this later. NEXT: Move to (7) on the plan - Ip=800 kA, nl04=0.8, normal shape, high strike point. RF power ramp.
Oct 19 2009 11:55:05:697AM	1091019006	Matt Reinke	Steady EDA H-mode until a large Cu/Ni injection hits at 1.15 seconds. Don't have good edge TS data as no one's around to fix it. NEXT: Move to (9) with Ne seeding since it's in the plenum. 0.4-0.6 sec puff at 1.7 psi. RF 2.5-4.0 MW from 0.6-0.8 and 4.0-5.0 from 0.8-1.5.
Oct 19 2009 12:07:20:700PM	1091019007	Matt Reinke	The Ne made it in just fine. and the tile temperatures a lower than 006 despite more ICRF. ICRF has some trips and there is a large Mo injection. NEXT: Repeat shot, but IMPINJ at 1.4 and LFS/HFS NINJA puff before LH trans
Oct 19 2009 12:20:27:707PM	1091019008	Matt Reinke	Not getting similarly high H89's and with these shots compared to 1090922. JANT running into a HV limit, try reducing and increase D/E. NEXT: Repeat target plasma, increase Ne pressure to 2.5 psi
Oct 19 2009 12:36:48:213PM	1091019009	Matt Reinke	D and E ran well, J poorly. Confinement isn't as good as previous experiments, but the RF isn't at full power yet. If still not the same turn of AUX systems. NEXT: lower pressure 2.0 psi and repeat.
Oct 19 2009 12:54:16:907PM	1091019010	Matt Reinke	Performance was better with a higher WTH and neutron rate, but the J-ANT power information is stuck in limbo. Yijun says it was clean, though. Despite a puff pressure of 1.9 psi we're still getting a large amount of divertor heat flux. PRAD is down compared with similar puffs, so that's consistent. We're getting ELMs which is weird. NEXT: Repeat shot with puff pressure at 3.0 psi
Oct 19 2009 01:06:50:630PM	1091019011	Matt Reinke	Ratty J-ANT, but heat flux lower, PRAD higher. No ELMs on this one. NEXT: Repeat Ne gas pressure down to 2.3 psi.
Oct 19 2009 01:24:14:137PM	1091019012	Matt Reinke	Good shot, repeated the high WTH, H89 and neutron rate of the 1090922 shots. The IMPINJ perturbs at the end. NEXT: Turn of IMPINJ, leave off NINJA and repeat with Ne pressure at 3.0 psi
Oct 19 2009 01:30:55:077PM	1091019013	Matt Reinke	Large injection kills the early H-mode, but it recovers nicely. PRAD not too much higher and H89 drops from 1.8-1.7 from 012. NEXT: Repeat increase puff pressure to 4.0
Oct 19 2009 01:49:36:770PM	1091019014	Matt Reinke	The plasma disrupted before the RF and PRAD/edge Te traces look like the puff was too much, similar to 1090909 exploratory shots. Seems like we can't "pre-load" the impurity to the right level. NEXT: Lower pressure back to 3.0 psi and puff from 0.4-0.6 and 1.0-1.2
Oct 19 2009 02:03:26:607PM	1091019015	Matt Reinke	The 2nd gas puff didn't get loaded so this was a repeat of 013 (programming wise) but a cleaner version. NEXT: load the puff timing for the 1.0-1.2 puff
Oct 19 2009 02:19:13:580PM	1091019016	Matt Reinke	Early part of the plasma was very repeatable but the 2nd puff from 1.0-1.2 was too much for it. NEXT: Try x2 smaller puffs, 1.0-1.05 and 1.3-1.3.05. Also NINJA back on looking at LH transition.
Oct 19 2009 02:30:58:240PM	1091019017	Matt Reinke	REALLY nice ICRF power trace but not enough radiation. NEXT: puffs at 0.95-1.05, 1.25-1.35 in the H-mode
Oct 19 2009 02:43:53:603PM	1091019018	Matt Reinke	Excellent shot. With the 2nd puff see a trajectory of decreasing confinement and then a HL transition. NEXT: repeat but use 3.0 psi N2 instead of Ne. Keep same puff timing and work from there.
Oct 19 2009 02:55:58:593PM	1091019019	Matt Reinke	Clearly not enough PRAD on this shot, possibly causing the bad RF? NEXT: Increase N2 pressure to 5.0 psi
Oct 19 2009 03:12:42:823PM	1091019020	Matt Reinke	Again, not enough prad..needs more N2 puff NEXT: 9 psi pressure on B-SIDE-LOW
Oct 19 2009 03:29:11:190PM	1091019021	Matt Reinke	See the early radiation rise this time at 9 psi but no large rise during the shot. I thought that this would disrupt it but it still seems stable. NEXT: Make a big step. Steady puff at 9 psi from 0.4-1.0.
Oct 19 2009 03:39:33:347PM	1091019022	Matt Reinke	A steady state N2 puff works well and it pumps out quickly after the gas valve shuts off. This is good news that we've got a knob to turn on the radiation but bad news because we're probably making the machine quiet dirty. NEXT: Increase the length of the N2 puff from 0.9-1.5
Oct 19 2009 04:00:02:230PM	1091019023	Matt Reinke	Great shot. Steady RF now that seeding is during the whole shot. Confinement is good, H89 < 1.80. Still have lowish PRAD and high heat flux to the divertor. NEXT: Repeat to check for N2 buildup then raise the pressure.
Oct 19 2009 04:06:56:970PM	1091019024	Matt Reinke	Very repeatable NEXT: 14 psi puff, start puff at 0.5 seconds to prevent early disruption
Feb 9 2010 08:54:48:533AM	1091019024	Matt Reinke	Looking back at this shot there's appears to a be a change in transport that occurs ~1.20-1.25. Despite the ramped ICRF there is no evolution of Te, ne neutron rate or PRAD. By the H98 vs. PNET arguement confinement should be improving Looking at the fluctuations there is a mode at around 55 kHz seen on magnetics and the AXUV diodes from 0.97 < t < 1.23. Whatever this is might be responsible for enhanced energy transport. Once it dies down confinement continues to improve with RF input power.
Oct 19 2009 04:25:19:303PM	1091019025	Matt Reinke	Shot had problems before the N2 puff started, MARFE and injections. NEXT: Repeat
Oct 19 2009 04:41:07:200PM	1091019026	Matt Reinke	Good shot with higher PRAD. Confinement down slightly but not much. NEXT: Increase to 20 psi N2 puff. Let RF ramp from 4.0-6.0 MW from 0.8-1.5.
Oct 19 2009 05:01:04:240PM	1091019027	Matt Reinke	Early disruption which seems to be from the N2 puff NEXT: lower the puff pressure to 17 psi and repeat.
Oct 19 2009 07:24:31:497PM	1091019028	Matt Reinke	This showed a time evolving H89 making for a great last shot on the N2 scan in EDA. Also, the ICRF was programmed for 6 MW and did OK but probably because the confinement started to degrade resulting in transient H-modes. This makes me excited for tomorrow.

Physics Operator Comments
Oct 19 2009 08:13:48:393AM		Bill Rowan	There will be a delay of approximately 1 hour in the start of the run. Alternator got a late start. Lock up delayed until 9:30
Oct 19 2009 08:22:37:130AM		Bill Rowan	Boronization completed on Friday night (1091016)
Oct 19 2009 08:53:50:923AM		Bill Rowan	Loaded shot 1090922021. Warning appeared: need to recalculate the magnetics predictors for shots after 9/24/09 Recalculated magnetics predictors
Oct 19 2009 09:13:08:603AM		Bill Rowan	Load segment 1 from 1091014033 reduced prefill by 2 ms from 25 to 23
Oct 19 2009 09:22:11:997AM		Bill Rowan	ratiomatic is expected to be working today.(Willie and Tommy)
Oct 19 2009 10:40:24:667AM	1091019001	Bill Rowan	001. Fizzle. Delay before this shot due to late startup of alternator. Next shot. Reduce the prefill from 23 ms to 19 ms Ratiomatic is not working well. May need to fiddle to find the breakdown.
Oct 19 2009 10:54:33:127AM	1091019002	Bill Rowan	002. Plasma. Injections at 1.0 and 1.3 s Impurity injection not in operation. SL not concerned nl_04=0.76e+20 (high) and valve is off. Next shot No PCS changes
Oct 19 2009 11:07:45:040AM	1091019003	Bill Rowan	003. Plasma No injections H-mode at 0.85 s nl_04 = 0.75e+20
Oct 19 2009 11:26:09:793AM	1091019004	Bill Rowan	004. Plasma
Oct 19 2009 11:26:19:607AM	1091019004	Bill Rowan	Next shot. No PCS changes
Oct 19 2009 11:31:54:280AM	1091019005	Bill Rowan	005. Plasma
Oct 19 2009 11:40:44:440AM	1091019005	Bill Rowan	Next shot. Loaded 1090922007. Corrected predictors Loaded 1091019005 segment 1 into segment 1
Oct 19 2009 11:47:56:037AM	1091019006	Bill Rowan	006. Plasma Next shot. Enabled b-side lower (neon)
Oct 19 2009 12:00:08:090PM	1091019007	Bill Rowan	007. Plasma. Full length Disruption during ramp down 1.7 s Next shot. No PCS changes
Oct 19 2009 12:16:13:440PM	1091019008	Bill Rowan	008. Plasma
Oct 19 2009 12:19:43:160PM	1091019008	Bill Rowan	008. Plasma Next shot No PCS changes
Oct 19 2009 12:34:52:447PM	1091019009	Bill Rowan	009. Plasma Next shot. No PCS changes
Oct 19 2009 12:51:44:810PM	1091019010	Bill Rowan	010. Plasma Next shot No PCS changes
Oct 19 2009 12:58:52:457PM	1091019011	Bill Rowan	011. Plasma disruption at 1.6 s
Oct 19 2009 01:08:38:913PM	1091019011	Bill Rowan	Next shot No PCS changes
Oct 19 2009 01:24:26:793PM	1091019012	Bill Rowan	012. Plasma Next shot. no pcs changes
Oct 19 2009 01:36:41:470PM	1091019013	Bill Rowan	013. Plasma Few injections between 0.7 and 1 s next shot. No PCS changes
Oct 19 2009 01:51:58:850PM	1091019014	Bill Rowan	014. Plasma Disruption at 0.57 s Likely due to impurity injection. bp_04bc magnetics alarm Bob is watching it Next shot. Added a pulse to pg1 (b-side lower) from 1.0 to 1.2 s
Oct 19 2009 01:56:36:430PM	1091019015	Bill Rowan	015. Plasma Neglected to load the pcs changes Next shot. Added a pulse to pg1 (b-side lower) from 1.0 to 1.2 s
Oct 19 2009 02:13:07:873PM	1091019016	Bill Rowan	016. Plasma
Oct 19 2009 02:18:36:813PM	1091019016	Bill Rowan	016. Plasma Next shot Reduced the second pulse on pg1. Now from 1.0 to 1.05s Added a pulse to pg1 (b-side lower) from 1.3 to 1.35 s
Oct 19 2009 02:22:31:283PM	1091019017	Bill Rowan	017. Plasma
Oct 19 2009 02:32:32:833PM	1091019017	Bill Rowan	017. Plasma Next shot Changed the last two pg1 pulses Pulse 1: 0.4 to 0.6 Pulse 2: 0.95 to 1.05 Pulse 3: 1.25 to 1.35
Oct 19 2009 02:39:00:603PM	1091019018	Bill Rowan	018. Plasma Next shot. B-side lower: nitrogen
Oct 19 2009 03:07:07:043PM	1091019019	Bill Rowan	019. Plasma Next shot. No PCS changes
Oct 19 2009 03:15:58:040PM	1091019020	Bill Rowan	020. Plasma Next shot. No PCS changes
Oct 19 2009 03:28:21:063PM	1091019021	Bill Rowan	021. Plasma Next shot. Changed pg1. Now just one puff from 0.4 to 1.0
Oct 19 2009 03:41:43:210PM	1091019022	Bill Rowan	022. Plasma next shot. PG1 puff. From 0.4 s to 1.5 s
Oct 19 2009 03:53:59:697PM	1091019023	Bill Rowan	023. Plasma injection at 1.25 s Next shot. No pcs changes
Oct 19 2009 04:04:24:733PM	1091019024	Bill Rowan	024. Plasma
Oct 19 2009 04:08:39:030PM	1091019024	Bill Rowan	Next shot. PG1 puff. From 0.5 s to 1.5 s
Oct 19 2009 04:23:41:647PM	1091019025	Bill Rowan	025.Plasma Disrupted at 1.25 s Next shot. No PCS changes
Oct 19 2009 04:35:50:057PM	1091019026	Bill Rowan	026. Plasma
Oct 19 2009 04:41:52:733PM	1091019026	Bill Rowan	Next shot. No PCS changes
Oct 19 2009 04:57:52:190PM	1091019027	Bill Rowan	027. Plasma. Disruption at 0.6 s Next shot. No PCS changes
Oct 19 2009 05:07:04:287PM	1091019028	Bill Rowan	028. Plasma Last shot.

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	10:31:00:007AM	Plasma	Ok
2	10:46:36:967AM	Plasma	Ok
3	11:02:38:770AM	Plasma	Ok
4	11:15:53:510AM	Plasma	Ok
5	11:28:57:890AM	Plasma	Ok
6	11:41:32:720AM	Plasma	Ok
7	11:56:39:883AM	Plasma	Ok
8	12:09:35:750PM	Plasma	Ok
9	12:22:13:033PM	Plasma	Ok
10	12:40:51:200PM	Plasma	Ok
11	12:55:50:440PM	Plasma	Ok
12	01:11:57:350PM	Plasma	Ok
13	01:25:17:357PM	Plasma	Ok
14	01:40:35:563PM	Plasma	Ok
15	01:53:40:897PM	Plasma	Ok
16	02:06:29:247PM	Plasma	Ok
17	02:19:23:893PM	Plasma	Ok
18	02:33:19:680PM	Plasma	Ok
19	02:48:09:810PM	Plasma	Ok
20	03:02:40:947PM	Plasma	Ok
21	03:17:05:310PM	Plasma	Ok
22	03:32:44:500PM	Plasma	Ok
23	03:48:16:837PM	Plasma	Ok
24	04:00:50:810PM	Plasma	Ok
25	04:15:24:987PM	Plasma	Ok
26	04:31:50:930PM	Plasma	Ok
27	04:47:23:000PM	Plasma	Ok
28	05:04:27:570PM	Plasma	Ok

System Availability

Oct 19 2009 10:30:39:100AM

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 sears,snipes BES yes 7 horizontal views spread out R_maj=[0.72-0.9m], 3 cm over the tokamak midplane (beam) Jul 09 2009 05:12PM (bespam) Bill Rowan Beam Emission Spectroscopy bespam,liao,rowan Bolometers yes 2pi (diode+foil), AXA, AXJ, WB3AX, WB4AX, LEDGE-AX working fine. MID-FOILS working fine. The LEDGE/DIV foils still need calibrations applied Aug 27 2009 09:09AM (mlreinke) Matt Reinke Bolometers hutch,mlreinke Boronization no Bottle Removed from the Cell, Piezo box on Igloo Removed. System in safe mode for In-Vessel Access May 30 2008 02:25PM (dekow) Jim Irby Boronization dekow,irby CNPA no Single channel CNPA available as of 12/1707 Jun 10 2009 10:22AM (twf) Ron Parker Compact Neutral Analyzer parker Cryopump - Upper Divertor no Cyopump hardware is not yet reinstalled in the cell. Jul 14 2009 09:21PM (labombard) Brian LaBombard Upper Divertor Cryopump irby,labombard CXRS yes The wide-view toroidal array was installed, spatially and absolutely calibrated. There are 7 toroidal chords intersect the beam at the major_R_range=[74.2:83.6]cm. Spatial resolution: 1.2 cm. The F-top wide-view poloidal array was installed and spatially calibrated. There are 19 chords intersect the beam at the major_R_range=[0.65:0.9.]m. Spatial resolution: 1.22 cm. Jul 09 2009 05:16PM (bespam) Bill Rowan Charge Exchange Spectroscopy bespam,blip,liao,rachmcd,rowan 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 yes system is aligned and operating; not yet calibrated Jul 14 2009 02:22PM (marmar) Earl Marmar Visible Bremsstrahlung marmar Disruption Mitigation no safely disabled; ready to be dismantled May 28 2008 10:22AM (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 DNB no power locked & tagged out; gate valve disabled May 28 2008 10:03AM (granetz) Robert Granetz Diagnostic Neutral Beam dterry,granetz,gung ECDC no 6/10/09 Magnetron relocated to west wall in cell at H-port. All controls and hardware have been installed but need to be tested prior to full operation. Magnetron Unplugged and Red tagged, PEI breaker red tagged, Safe for In-Vessel Activity Jun 10 2009 02:35PM (dekow) Jim Irby 2.45 GHz, 3 kW, discharge cleaning system dekow,irby,pfeiffer FRC-ECE yes All 32 channels working and calibrated. Oct 06 2009 11:17AM (phillips) Perry Phillips Heterodyne ECE-32 channels phillips G-Side Ratiomatic yes Gauge installed. Controller repaired. Aug 23 2009 10:36PM (toland) Brian LaBombard G-side ratiomatic ionization gauge labombard,toland Glow Discharge no 6/10/09: Paddles meggered at 1000 v to machine ground (>300 Mohm) prior to closing the vacuum chamber. Plugs for Power Supply and Controls Unplugged and Red Tagged, Safe for In-Vessel Access Jun 10 2009 01:47PM (dekow) Jim Irby 1 kV, 5 A, glow discharge system dekow,dterry,irby GPC yes Operational. Jul 28 2009 04:23PM (hubbard) Amanda Hubbard ECE Polychromater hubbard,schmidt GPC2 yes Most channels operational. Jul 28 2009 04:23PM (hubbard) Amanda Hubbard ECE Polychromater hubbard,schmidt 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 poses no safety hazard for people working around the machine Jun 18 2009 01:04PM (marmar) Earl Marmar H/D Ratio marmar HEAT no Disconnect switch is open, reg tagged and locked. Shunt Trip Breaker is opened. Safe for in-vessel work. Jun 04 2008 12:24PM (dekow) Gary Dekow - Machine Heaters - burke,dekow Hirex Jr yes Hirex-Jr has been installed and tested Jun 17 2009 11:54AM (rice) John Rice High Resolution X-Ray ince,rice Hirex Sr yes currently only one detector is operational, off-axis He-like argon emission Jul 14 2009 10:01AM (rice) John Rice High Resolution X-Ray ince,rice HXR no In safe mode (high voltage turned off) May 27 2008 09:19PM (schmidt) Ron Parker Hard X-Ray Array parker,schmidt ICRF D-Antenna yes operational at 80 MHz Jul 21 2009 04:49PM (wukitch) Steve Wukitch D-port antenna wukitch,ylin ICRF E-Antenna yes antenna and FFT operational Jul 21 2009 04:49PM (wukitch) Steve Wukitch E-port antenna wukitch,ylin ICRF J-Antenna yes available at 80 MHz and [0,pi,0,pi] phasing Sep 04 2009 10:01AM (wukitch) Steve Wukitch J-port antenna wukitch,ylin Laser Blow-Off yes Requires some advance notice for laser start-up Oct 16 2009 12:46PM (g) Martin Greenwald Impurity Injection System g,nthoward Lower Hybrid no Breaker locked and tagged out. Waveguide disassembly started. Open Waveguides have been shorted. May 28 2008 09:47AM (dterry) Ron Parker Lower Hybrid dterry,parker,wallaceg LPI no Beam line removed May 30 2008 02:09PM (bose) Earl Marmar Lithium Pellet Injector bose,marmar Ly-alpha yes Midplane, WB4-LY, LEDGE-LY all collecting data. WB1-LY not attached. Aug 27 2009 09:10AM (mlreinke) Matt Reinke Lyman alpha cameras labombard,mlreinke McPherson yes Operating normally Aug 27 2009 09:10AM (mlreinke) Jim Terry VUV Spectrometer mlreinke,terry Michelson yes Operational. Recalibrated 7/27/09. Jul 28 2009 04:22PM (hubbard) Amanda Hubbard ECE Te Profiles hubbard,schmidt MKS yes Gauges are on. B-bottom is not operating - bad sensor head? Jul 14 2009 09:12PM (labombard) Brian LaBombard Baratron pressure gauges labombard 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 As of 6/10/09, MSE is calibrated & ready to go. Awaiting DNB. Jun 10 2009 10:34AM (sscott) Steve Scott Motional Stark Effect jinseok,sscott Neutrons yes Neutron detectors are calibrated and ready to go. Voltages will be turned on prior to first plasma. Jun 10 2009 10:35AM (fiore) Catherine Fiore Neutron Detectors fiore Neuts and Hards yes Operational --- Uncalibrated and needs to be positioned at port Jun 25 2009 05:08PM (irby) Jim Irby X-Ray/Neutron Detector at K-Hor irby NINJA no Capillaries were tested in-vessel. Plenum has a leak and needs fixing. Jul 14 2009 09:14PM (labombard) Brian LaBombard NINJA gas puff labombard,terry PCI no Down. Will not be fixed until vent. Sep 24 2009 09:10AM (ntsujii) Miklos Porkolab Phase Contrast Imaging arai,edlund,ennever,ntsujii,porkolab Penning Gauges yes High voltage is enabled (on during INIT, off during RECOOL). Jun 30 2009 09:42PM (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 no Safe for Machine Entry Sep 14 2007 12:17PM (irby) Jim Irby C-Mod Polarimeter irby Power - Alternator Air Switch yes Checked and Operational as of 06/18/09 Jun 19 2009 08:04AM (irby) Gary Dekow feeds all the other supplies cochran,dekow,dterry,irby Power - PEI yes Operational ---- ECDC running as required Jun 19 2009 08:06AM (irby) Gary Dekow PEI System cochran,dekow,dterry,irby Power - TMX yes Checked out and ready for Magnet Tests as of 06/18/09 Jun 19 2009 08:07AM (irby) Gary Dekow Ef2s,. EFCs and A-Coils byford,cochran,dekow,dterry,irby Power Systems yes Checked out and ready for Magnet Tests as of 06/18/09 Jun 19 2009 08:07AM (irby) Jim Irby C-Mod Magnet Supplies byford,cochran,dekow,dterry,irby Probe Array - ISD yes Array is operational with new cPCI data system. Probe 14 has open circuit. Jul 14 2009 09:17PM (labombard) Brian Labombard Inner Lower Divertor Probe Array labombard Probe Array - LH no LH launcher not installed. Cables are unplugged at the A-port rack. Jul 14 2009 09:16PM (labombard) Brian LaBombard Lower Hybrid Probe Array labombard Probe Array - OSD yes Array is operational with new cPCI data system. Jul 14 2009 09:16PM (labombard) Brian LaBombard Outer Lower Divertor Probe Array labombard Probe Array - UDIV yes Array is operational with new cPCI data system. Probe 13 has a bad cable (open). Jul 14 2009 09:17PM (labombard) Brian LaBombard Upper Divertor Probe Array labombard Reflectometer yes Since 1090824xxx, all channels are operational. Aug 25 2009 09:31AM (dominguez) Earl Marmar Reflectometer dominguez,marmar Scanning Probe - ASP yes Probe is operational. Needs plasma conditioning. Jul 14 2009 09:18PM (labombard) Brian LaBombard A-Port Scanning Probe labombard Scanning Probe - FSP yes Probe is operational. Needs plasma conditioning. Jul 14 2009 09:18PM (labombard) Brian LaBombard F-Port Scanning Probe labombard Scanning Probe - WASP yes System connected to A-port WASP. Needs plasma testing. Jul 14 2009 09:19PM (labombard) Brian LaBombard Inner Wall Scanning Probe labombard,nsmick Sparker yes Sparker now at K-Hor. Set for 100 uA of current. Will up to 200 uA before first plasma Jun 18 2009 01:01PM (irby) Jim Irby Field Emission Preionization for C-Mod dekow,irby,parkin TCI yes System restarted and aligned. Several chords available including NL04. Density Feedback available. Ready for plasma. Jun 18 2009 09:15AM (murray) Jim Irby Two-Color Interferometer irby,murray TS - Core yes 2 lasers working. 15 spatial channels operational. Calibrated Oct 13 2009 07:49PM (yma) Jerry Hughes Core Thomson scattering jwhughes,yma,zhang TS - Edge yes Operational, and calibrated. Oct 11 2009 03:01PM (jwhughes) Jerry Hughes Millimeter resolution edge Thomson scattering jwhughes,yma,zhang Vispec no 350 and 670 nm, 4 spatial channels Nov 28 2007 09:58AM (agraf) Alex Graf Visible Spectrometer agraf XTOMO yes Operating normally Aug 27 2009 09:10AM (mlreinke) Bob Granetz X-Ray Tomography granetz,mlreinke