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 1-29)

Miniproposal: 579 Date Filed: 9/3/2009 Title: Characterization and optimization of I-mode First Author: Dennis Whyte Session Leader: Matt Reinke (shots 30-34)

Engineering Operator Run Comment

automatically entered by signon - please replace with real comment

Session Leader Plans

Entered: Oct 19 2009 07:30:02:390PM

Author: Matt Reinke

see SL_PLAN of 1091019. We will start with (1)-(6) and then move to (10)-(16) We will need the cryopump for the this run but not for the first group of shots. ECDC in D2 overnight which should help cleanup some residual N2 Start with 1.5 psi of Ne in B-SIDE-LOWER. Pump and purge once to try and clean out and residual N2 from the Monday.

Entered: Oct 20 2009 08:31:42:323AM

Author: Matt Reinke

****REPOST OF THE 1091019 RUN PLAN**** 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

Session Leader Summaries

Entered: Oct 20 2009 05:30:55:763PM

Author: Matt Reinke

A very tough day. We ran into problems early and never recovered good H-mode performance that we ended with yesterday. At the end, we switched to MP579 and ran a few I-mode shots successfully demonstrating that a machine that was unable to run steady H-modes with good confinement can still run I-modes. Not a lot of physics done today, but some lessons learned. We ran unseeded and seeded (Ne only) ELMy H-modes from 001-009 but had a significant Mo impurity. Sort of a null result w/r/t MP564, but we have a lot of data for that MP to chew on w/ EDA's before we focus on the ELMy shots. Moved to repeat the seeded EDA shots from yesterday from 010-014 but was unable to get a steady H-mode and had problems with injections. A good demonstration that you can't seed your way out of bad wall conditions and our Mo problem is more than heat flux. Moved to the lower strike point shape from 015-029 to try and test seeding with the strike point on the tungsten tile. There was no tungsten injections, although we weren't getting any steady H-modes and we were varying the divertor deltaTs. I think this is an encouraging result for future BORONIZED experiments with a lower strike point.

Physics Operator Summaries

Entered: Oct 20 2009 04:55:58:890PM

Author: Ian Hutchinson

A tough day of injections and disruptions. Not much physop news. Scorecard: Shot,Duration(s),Ipmax(MA),Result Shot,Duration(s),Ipmax,Result | 01 1.957 0.816 Plasma | 02 0.690 0.864 Plasma | | 03 0.000 0.040 Fizzle | 04 1.959 0.818 Plasma | | 05 1.962 0.830 Plasma | 06 0.836 0.867 Plasma | | 07 0.000 0.048 Fizzle | 08 1.204 0.855 Plasma | | 09 1.204 0.837 Plasma | 10 0.896 0.841 Plasma | | 11 0.000 0.048 Fizzle | 12 1.566 0.825 Plasma | | 13 1.041 0.845 Plasma | 14 0.245 0.620 Plasma | | 15 1.379 0.832 Plasma | 16 0.706 1.111 Plasma | | 17 0.000 0.049 Fizzle | 18 1.984 1.006 Plasma | | 19 1.980 1.015 Plasma | 20 0.000 0.052 Fizzle | | 21 0.736 1.040 Plasma | 22 0.000 0.046 Fizzle | | 23 1.229 1.061 Plasma | 24 1.704 1.019 Plasma | | 25 1.847 1.019 Plasma | 26 0.618 1.037 Plasma | | 27 1.990 0.923 Plasma | 28 1.989 0.926 Plasma | | 29 1.993 0.921 Plasma | 30 1.175 1.275 Plasma | | 31 0.000 0.056 Fizzle | 32 0.000 0.052 Fizzle | | 33 1.975 1.224 Plasma | 34 1.610 1.317 Plasma | % Compiled module: MDSGETMSG. Date 1091020: 34 shots. 26 plasmas. 8 fizzles. 0 duds. 0 System Error. (Plasma = Ip gt 60.0 kA Dud = H_alpha lt 0.40 V) Total plasma duration: 36.47 s (exceeding -81 kA)

Session Leader Comments
Oct 20 2009 08:30:25:040AM	1091020001	Matt Reinke	Repeat of 1091019002 (JFT-2M 'grazing' shape with nl04~0.5 and Ip=800 kA). ICRF power ramp from 0.5-3.0 MW from 0.8-1.5 sec.
Oct 20 2009 09:19:16:577AM	1091020001	Matt Reinke	The density is around the range of interest but a bit wobbles as the RF comes in. No H-mode transition in this shot and an injection from the inner divertor around 1.3, Jerry says a bit of x-point creep after 1.0 seconds, Ian try to compensate a bit. Yujin says the RF can be better. Still showing residual nitrogen on CHROMEX, CXRS and MCP despite a D2 ECDC last night. NEXT: Repeat with some wirehead nonsense applied.
Oct 20 2009 09:36:51:643AM	1091020002	Matt Reinke	Large increase in PRAD after 0.66 seconds. Looks like high-Z and degrades temperature until a disruption. This was before the ICRF so it could just be random. NEXT: Repeat and if it happens again switch back to original 1090922021 programming.
Oct 20 2009 09:43:23:553AM	1091020003	Matt Reinke	Fizzle :(
Oct 20 2009 10:07:38:703AM	1091020004	Matt Reinke	Shot went just fine, got ELMy H-mode, although 2 MW threshold higher than before (1 MW on 1090922021). Mo injections and higher Mo in the H-mode possibly pushing up threshold. NEXT: same target,unseeded with ICRF @ 2.0-2.9 MW from 0.6-0.8 and 2.9 MW from 0.8-1.5
Oct 20 2009 10:15:48:550AM	1091020005	Matt Reinke	Got the ELMy H-mode but had evolving PRAD and input power. D-ANT drops out and lots of early Mo. NEXT: Increase steady RF power to 3.4 MW
Oct 20 2009 10:28:17:960AM	1091020006	Matt Reinke	Had a Fe injection that killed the plasma early in the H-Mode, but Mo was already on it's way up. The K-LIM tile has been maroon hot all day so perhaps Mo is from there and if we seed it will drop. NEXT: Start the seeding. 1.4 psi Ne from 0.4-0.6 and ICRF 2.5-4.0 MW from 0.6-0.8 and 4.0-5.0 MW from 0.8-1.5.
Oct 20 2009 10:34:32:450AM	1091020007	Matt Reinke	Fizzle :(
Oct 20 2009 10:57:48:660AM	1091020008	Matt Reinke	Disrupted early. Significant Mo and some W in this discharge. H-Mode but little to no ELMs. NEXT: Delay start of ICRF till 0.7 seconds and repeat.
Oct 20 2009 11:10:48:820AM	1091020009	Matt Reinke	Slightly improved over the last shot early on, but after 1.0 sec. getting large injections and Mo increases. Looking at AXA and WB2AX there is a large edge emitter. The K-LIM tile is getting a large power flux. NEXT: Decrease pressure 0.9 psi see if early ELMs return.
Oct 20 2009 11:18:37:277AM	1091020010	Matt Reinke	Yuck. Mo and W are killing me on these shots and we're not getting anything worthwhile. PUNT! NEXT: Repeat the Ne-seeded EDA from yesterday (012) w/ 2.0 psi Ne. Compare to yesterday's to see if Mo is higher before moving to the lower strike point shape.
Oct 20 2009 11:48:18:383AM	1091020012	Matt Reinke	The early H-modes have low Mo but after 0.9 Mo increases substantially. The K-LIM tile still has a VERY large deltaT (~400). Still getting edge emission on AXA. NEXT: Repeat and then try and change outer gap if still a problem.
Oct 20 2009 12:04:10:810PM	1091020013	Matt Reinke	This shot disrupted after the Mo injections start ~1.0 sec. Possibly something hanging in around the AB limiter? NEXT: Back off on the Ne puff to 1.4 psi. Increase the outer gap by 0.5 cm. Increase nl04 target to 0.85 and turn off NINJA.
Oct 20 2009 12:07:39:970PM	1091020014	Matt Reinke	early disruption NEXT: repeat w/o disruption
Oct 20 2009 12:32:11:730PM	1091020015	Matt Reinke	Still getting transient H-modes so it won't be a good comparison to previous seeded runs. Getting the injection on AXA right before disruption. AXUV midplane profile is nearly flat, not hollow indicative of substantial Ne NEXT: Move to lower strike point, 1 MA shot (1090811006).
Oct 20 2009 12:45:05:717PM	1091020016	Matt Reinke	Early disruption NEXT: Raise target density to nl04~1.05, turn off RF and B-SIDE-LOW, let IMPINJ fire at 1.2
Oct 20 2009 12:52:50:457PM	1091020017	Matt Reinke	fizzle...it's one of those days
Oct 20 2009 01:08:49:413PM	1091020018	Matt Reinke	FINALLY a good shot. Injection at 1.2 is the IMPINJ. NEXT: 3 RF pulses D,E and J separate to try and see if there's s problem.
Oct 20 2009 01:24:06:890PM	1091020019	Matt Reinke	Full length shot again. Got a number of injections during the RF pulses, but nothing localized to AXA this time. NEXT: Stack RF pulses, add Ne seeding from 0.4-0.6 w/ 1.4 psi
Oct 20 2009 01:53:52:133PM	1091020021	Matt Reinke	Early disruption at ~0.75 seconds. PRAD choppy but under control till 0.717 when I large injection came in. No sign of W NEXT: Remove D-ANT from the mix (MAX now ~4.0) based on the injections seen on 019. Increase Ne to 1.9 psi.
Oct 20 2009 02:17:33:097PM	1091020023	Matt Reinke	Disruption at 1.2 seconds. Very ratty J-ANT pulse, very low input power. Ne clearly getting in before the ICRF. NEXT: Same target, lower ICRF thru J-ANT, MAX~3.5 MW.
Oct 20 2009 02:33:32:010PM	1091020024	Matt Reinke	A post-disruption plasma and one that makes it to ramp down!! The emissivity profile on the AXUV diodes is hollow and Mo brightness is low (< 50) for most of these shots. No evidence of W lines either. Divertor deltaT is down. NEXT: Lower Ne pressure to 1.0 psi.
Oct 20 2009 02:42:59:950PM	1091020025	Matt Reinke	Another full length shot but still choppy RF. Divertor deltaT increases. Perhaps we're just not doing enough? Easy to test that theory. NEXT: Increase Ne pressure 3.6 psi
Oct 20 2009 02:55:40:190PM	1091020026	Matt Reinke	Early disruption due to too much Ne gas. Check. Yijun says the ELM-Free H-modes making it difficult for steady RF. NEXT: Reduce current to 900 kA, nl04~0.95 to try and bring back more EDA. Reduce Ne puff pressure to 0.9 psi.
Oct 20 2009 03:07:30:303PM	1091020027	Matt Reinke	More EDA-ish, longer H-modes. Higher delta's in the divertor. NEXT: Same target plasma, add 1 MW D-ANT.
Oct 20 2009 03:21:42:263PM	1091020028	Matt Reinke	D-ANT was added without and killer injections but less steady H-modes and poorer J-ANT performance. Mo getting up really high ~ 100 counts. NEXT: Change to N2 puff to see if there's a difference. 10 psi, steady puff from 0.5-1.1.
Oct 20 2009 03:42:37:600PM	1091020029	Matt Reinke	Another impurity ridden shot. The tokamak is clearly too dirty to be run in H-mode. NEXT: Demonstrate the I-mode can be run when an H-mode is hopeless. Load up 1091016033 (no cryopump). Switching to MP579.
Oct 20 2009 03:57:45:307PM	1091020030	Matt Reinke	Not half bad for a quick changeover of MP. The ICRF didn't have the correct steps but still was very steady. The density was too high, nl04~1.25, compared to ~1.1 from 1091016. NEXT: Repeat fixing RF timing and adding cryopump.
Oct 20 2009 04:08:14:890PM	1091020031	Matt Reinke	fizzle, looks like a cyroburp NEXT: Repeat
Oct 20 2009 04:39:28:807PM	1091020033	Matt Reinke	Brief I-modes before the H-modes. Surprising at this power level. NEXT: Increase current to 1.3 MA.
Oct 20 2009 04:54:27:547PM	1091020034	Matt Reinke	Good I-mode shot only a little injection spoiled it. NEXT: end since the RF is :(

Physics Operator Comments
Oct 20 2009 09:07:29:273AM		Ian Hutchinson	Load from 1091019002. Its segment 2 is what we are using: JFT2M shape. Program rxl inward by .45s to get shape earlier. Load.
Oct 20 2009 09:30:09:610AM	1091020001	Ian Hutchinson	Plasma to rampdown. No H-mode (worth mentioning). Ramp rxl out after 1s to prevent inward creep.
Oct 20 2009 09:43:59:990AM	1091020002	Ian Hutchinson	Plasma disrupts at .7s. Giant injection. Some runaways. Increase gas puff to 30ms from 20ms.
Oct 20 2009 09:55:17:870AM	1091020003	Ian Hutchinson	Fizzle. Set gas puff to 25ms.
Oct 20 2009 10:09:40:097AM	1091020004	Ian Hutchinson	Plasma to rampdown.
Oct 20 2009 10:23:12:990AM	1091020005	Ian Hutchinson	Plasma to rampdown. Got H-mode.
Oct 20 2009 10:35:02:653AM	1091020006	Ian Hutchinson	Plasma disrupts at .82s because of a big injection. Enable B-side lower. Ar at 1.? psi Pulse gas 1 puff .4 to .6s.
Oct 20 2009 10:47:12:640AM	1091020007	Ian Hutchinson	Fizzle.
Oct 20 2009 11:00:17:850AM	1091020008	Ian Hutchinson	Plasma Disrupts at 1.2s. Gas puff to 20ms.
Oct 20 2009 11:14:02:137AM	1091020009	Ian Hutchinson	Plasma disrupts at 1.2s. Decrease B-side lower neon pressure to 0.9psi.
Oct 20 2009 11:26:26:123AM	1091020010	Ian Hutchinson	Plasma disrupts at .9s. Load segment 2 from 1091019012
Oct 20 2009 11:39:08:223AM	1091020011	Ian Hutchinson	Fizzle.
Oct 20 2009 11:53:09:527AM	1091020012	Ian Hutchinson	Plasma disrupts in rampdown.
Oct 20 2009 12:05:26:950PM	1091020013	Ian Hutchinson	Plasma disrupts at 1.05s. Program rcur in by 2mm to .66 at .4s, then let drift out. Raise nl04 to .85 from .8e20.
Oct 20 2009 12:23:32:630PM	1091020014	Ian Hutchinson	Disrupts at .24s.
Oct 20 2009 12:39:16:637PM	1091020015	Ian Hutchinson	Plasma disrupts at 1.37s. Load seg 2 from 1090811006.
Oct 20 2009 12:52:21:313PM	1091020016	Ian Hutchinson	Plasma disrupts at 0.7s. Raise nl04 to 1.05e20.
Oct 20 2009 01:05:16:270PM	1091020017	Ian Hutchinson	Fizzle.
Oct 20 2009 01:18:34:887PM	1091020018	Ian Hutchinson	Plasma to rampdown. With no RF. Increase fill puff to 25ms.
Oct 20 2009 01:31:45:093PM	1091020019	Ian Hutchinson	Plasma to rampdown. With some RF. Reenable bsidelower .4-.6
Oct 20 2009 01:44:58:227PM	1091020020	Ian Hutchinson	Fizzle.
Oct 20 2009 02:05:36:217PM	1091020022	Steve Wolfe	Shot#22: Wolfe in as substiture Physop. pg4 from 25 to 23msec, add more pg3 in seg1 RF will remove D, reducing maximum rf level. Leave neon puff at 200msec, raising to 2psi Result: fizzle, moving in, hardly any current rise Next: repeat
Oct 20 2009 02:15:23:987PM	1091020023	Steve Wolfe	Shot#23: repeat, pg4 still at 23msec Result: plasma to 1.23sec, ratty looking H-modes; J very choppy, E stays on fast current rise, some runaways, if it hadn't disrupted I'd raise the puff. Next: drop pg4, risk the runaways
Oct 20 2009 02:25:27:647PM	1091020024	Steve Wolfe	Shot#24: pg4 from 23 to 20msec, raise pg3 in seg1 result: plasma into rampdown, multiple H-modes, rf still choppy (J and E) runaways as expected, nl04 just under Ian's magic 5e18 at .02 next: raise pg4 a tad
Oct 20 2009 02:40:33:853PM	1091020025	Steve Wolfe	Shot#25: pg4 from 20 to 22msec, reduce neon to 1psi Result: plasma to 1.84sec, multiple H-modes, runaways better but still there. Next: raising neon to 3.5psi, raise pg4 a bit more.
Oct 20 2009 02:49:05:797PM	1091020026	Steve Wolfe	Shot#26: pg4 from 22 to 23msec (I may be pushing my luck), increase neon to 3.5psi Result: disrupts at 0.6sec, still some runaways Next: back to 20msec on pg4, reduce the neon
Oct 20 2009 03:05:00:600PM	1091020027	Steve Wolfe	Shot#27: pg4 from 23 to 20msec Ip to 900kA. nl04 from 1.05 to .95 Neon to 1psi Ian is back, I'm blaming the upcoming fizzle on him. Result: plasma full length, no runaways, multiple H-modes, J still faulting, so is E somewhat. nl04 at .02sec is 6.3e18, satisfying the IHH runaway criterion Ian left the room again, so I guess I'm still in the hotseat. Next: pg4 back to 22msec
Oct 20 2009 03:14:29:870PM	1091020028	Steve Wolfe	Shot#28: pg4 from 20 to 22msec No target changes, RF turning D back on Result: plasma full length, runaways are back- didn't raise pg4 enough. Possibly a new record on number of h-modes Next: Ian is back and taking over.
Oct 20 2009 03:32:23:877PM	1091020028	Ian Hutchinson	Plasma. Hutch is back. Raise fill puff to 24ms. Bside-lower puf to .5-1.1s.
Oct 20 2009 03:48:46:630PM	1091020029	Ian Hutchinson	Plasma to rampdown. Load segment 2 from 1091016033
Oct 20 2009 04:04:22:637PM	1091020030	Ian Hutchinson	Plasma disrupts at 1.16s. Moving to cryopump usage. Load segment 1 from 1091016033.
Oct 20 2009 04:16:41:783PM	1091020031	Ian Hutchinson	Fizzle because cryo let go just before the shot. Repeat.
Oct 20 2009 04:28:57:960PM	1091020032	Ian Hutchinson	Fizzle. Same again.
Oct 20 2009 04:45:35:560PM	1091020033	Ian Hutchinson	Plasma to rampdown. Raise Ip to 1.3MA.
Oct 20 2009 04:54:24:030PM	1091020034	Ian Hutchinson	Plasma disrupts in rampdown.

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	09:05:31:303AM	Plasma	Ok
2	09:27:54:203AM	Plasma	Ok
3	09:40:39:490AM	Plasma	Ok
4	09:53:23:857AM	Plasma	Ok
5	10:06:18:780AM	Plasma	Ok
6	10:19:13:723AM	Plasma	Ok
7	10:32:18:637AM	Plasma	Ok
8	10:45:03:233AM	Plasma	Ok
9	10:58:10:363AM	Plasma	Ok
10	11:11:09:150AM	Plasma	Ok
11	11:24:05:670AM	Plasma	Ok
12	11:36:59:520AM	Plasma	Ok
13	11:50:04:227AM	Plasma	Ok
14	12:02:57:717PM	Plasma	Ok
15	12:21:20:520PM	Plasma	Ok
16	12:37:11:747PM	Plasma	Ok
17	12:50:06:703PM	Plasma	Ok
18	01:03:23:363PM	Plasma	Ok
19	01:16:07:183PM	Plasma	Ok
20	01:29:07:077PM	Plasma	Ok
21	01:41:40:457PM	Plasma	Ok
22	01:54:34:870PM	Plasma	Ok
23	02:07:20:060PM	Plasma	Ok
24	02:20:03:330PM	Plasma	Ok
25	02:33:18:650PM	Plasma	Ok
26	02:45:55:577PM	Plasma	Ok
27	02:58:39:080PM	Plasma	Ok
28	03:11:35:477PM	Plasma	Ok
29	03:28:47:953PM	Plasma	Ok
30	03:46:57:037PM	Plasma	Ok
31	04:01:41:857PM	Plasma	Ok
32	04:14:16:940PM	Plasma	Ok
33	04:27:04:100PM	Plasma	Ok
34	04:40:55:683PM	Plasma	Ok

System Availability

Oct 20 2009 09:05:06:693AM

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