Miniproposals

Miniproposal: 430 Date Filed: 7/26/2005 Title: Localization of the effect of boronization First Author: Bruce Lipschultz Session Leader: Bruce Lipschultz (shots 1-34)

Engineering Operator Run Comment

MP430 - Between shot boronization SL: Bruce Lipschultz PO: Jim Irby

Session Leader Plans

Entered: Jun 12 2007 10:25:28:287AM

Author: Bruce Lipschultz

MP430 - Between shot boronization ECDC a few hours in He or D2. Note - We will be using 10% diborane 90% He mixture. We will be operating at a foreline pressure of 35 mTorr. Probably will not use cryopump because of concern that, even at 77K, it will pump the diborane. Tests are needed. The estimated vapor pressure of diborane at 77K is 0.5mT which may be right at the pressure used for boronization. 1) Take 1-2 shots - 1070608021 is fine (or more recent 1 MA shot). 2.5-3MW or RF requested. Basically our 1 MA standard shot. This will be the un-boronized background 2) Process: Boronization between shots with a fixed radius (200 sec sweep, 20 sec dwell) for a minimum of 10 minutes at first (may want 15 minutes later). Take 2 shots to ascertain the effect. Make sure the last shot returns to shot in step 1. 3) The above sequence (boronization followed by 2 shots) will be started with the resonance centered at 70 cm to ascertain length of boronization. Make it longer if no effect. 4) Boronize sequence (1 shot to measure effect, 2nd shot to determine if it has worn off) using 10 cm wide scans to cover the range 90-50 cm. Work from outer major radius inward in 5 cm steps. (10 shots minimum not including fizzles) 5) Evaluate the effectiveness of boronization through several parameters - the rate of rise of radiation at the beginning of the H-mode, the radiation just before the tramsition, the H-factor, neutron level in H-mode. 5) Once done with the scan, return to the most effective location.

Physics Operators Plans

Entered: Jun 11 2007 01:05:20:260PM

Author: Jim Irby

Engineering Setup for Tuesday, 12 June 2007; Run 1070612 MP430 - Between shot boronization SL: Bruce Lipschultz PO: Jim Irby Engineering Setup ------------------ Bake at 60 C. Run begins at 08:00 and ends at 18:00 Power systems as on 1070605013 Acoil: +Dtop -Dbot -Jtop +Jbot (standard) Hybrid Enabled We require remote, between-shot control of EF4 to provide vertical field for boronization. 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) pump out NINJA then disable. Enable the following gate valves and shutters: ECE, VUV, Z-bolo DNB permissive enabled RF Systems: ---------- LH: not required ICRF: require all 3 antennas (D, E and J). J is in dipole configuration FMIT#1,2,4 in RUN-ON by 08:30 Desire up to 3 MW, 0.5 seconds in H-Mode for the MP

Session Leader Summaries

Entered: Jun 14 2007 10:38:42:027AM

Author: Bruce Lipschultz

MP#430 - Between shot boronization Goal of this run is to determine, under new conditions, the optimal boronization resonance location. We had previously done this scan in 1050810 with 20% diborane/80%He & 50MHz ICRF. This run was done with the vertical field on during the boronization to reduce radial losses, 35 mTorr on the foreline pressure (instead of 50 mT) to keep the boronization out of H-port, 10% diborane, & 78 MHz ICRF. We were limited to 2 MW today due to a loss of D antenna for the day. All boronizations were for 10 minutes with the resonance at a fixed radius (10 cm sweep on 1050810). As measured recently the deposition profile is of order 10-15 cm wide. Each boronization was followed by at least 2 discharges to make sure the boronization wore off before the next boronization. All plasmas were 1MA and nl04 ~ 1e20 m-2. The run started slowly as there were issues to deal with. The 2 fiducial shots, pre-boronization, are shots 6 & 7. Boronizations were done before the following shot #s 8 (R=70) 11 (R=90) 13 (R=85) 15 (R=80) 18 (R=75) 21 (R=70) 23 (R=65) 26 (R=60) 29 (R=87) 33 (R=83) As can be seen from the following figure the radiated power (2pi diode with x2 multiplier), the time derivative of the 2pi bolo_diode (no multiplier) before the H-mode and during the initial density rise, all show a minimum in the region of the resonance location of 80 cm. The radiated power can be replotted on the same graph with the Mo brightness measured by the McPherson (116 Angstroms) spectrograph. The Mo brightness value was averaged over the period before the H-mode when the RF power was on (Matt Reinke). The radiated power is taken just before the H-mode transition. Note that I have subtracted 280kW from the prad_diode. Note also the strong correlation between the 2 signals. The implication is that while the Mo radiation was essentially zeroed before the H-mode (during full RF power) the radiated power was reduced of order a factor of 2. Given the uncertainty in the 2pi_diode calibration (some people use a factor of 2, some others use a multiplier of 3) this means that 250-400 kW of radiation remains (~2MW ICRF, 1MW Ohmic), so about 10-15% radiated power. Lastly I plot the value of both the total stored energy and 'neuts and hards' signal vs boronization resonance radius. The wtot is the maximum value during the H-mode while the neuts and hards value is taken as an average over the first H-mode. They also show a clear maximum in the region of 80 cm for the resonance. - The 'sweet spot' appears to be around 80 cm. Note that there are 2 resonances the ECRH resonance which is what is discussed above and plotted, as well as the upper hybrid resonance, which is 8 cm further out. The Upper hybrid resonance correxponds to a higher plasma density. The innermost major radius of the limiters is around 82 cm. The midplane radius of the limiters is 90.5. So the sweet spot, which extends at least from 80 - 90 cm, corresponds to boronizing the outer limiter. The width of the sweet spot is slightly less than 20 cm. This is probably consistent with what was measured by the Surface Science Station (S^3) - see 5/14/07 C-Mod weekly meeting talk by Niels Gierse. Note also that the S^3 results show the deposition extends up to 20 outward in major radius from the ECRF resonance location. Issues - plan to optimize boronization further so we may need to repeat some of this. For example we plan to utilize S^3 to measure the boronization deposition rate as a function of the fill pressure and to compare 20% to 10% diborane.

Physics Operator Summaries

Entered: Jun 12 2007 06:25:14:873PM

Author: Jim Irby

Until we had a disruption on shot 29, the machine ran extremely well today. Cutting back the prefill to 8 ms for the first shot following boronization, and then going to 10 ms on the next shot worked all day until we had the disruption. Shot 09 fizzled because of too much gas (I tried to move back to more standard prefills following the second shot following boronization). The disruption, due to an injection, required several fizzles to recover from, and the carbon level never returned to its pre-disruption level. The carbon levels trended down all day, as did the h/d, probably indicating something interesting about their source location relative to the "sweet spot" for improved performance. On shot 17 we had no prepuff at all and no voltage to the b-top piezo. I believe we have seen this problem before, and we should work our way through the gas system maze of wiring. The TF did not follow programming and worked its way up near the PLC limit on shot 03. We could find nothing wrong with the DPCS signals going to the TF during subsequent no power test shots, and the TF performed properly the rest of the day. Boronization started for shot 08. score ----- Tests 01,02,04,05 plasmas 03,06,07,08,10,11,12,13,14,15 16,18,19,20,21,22,23,24,25,26 27,29,33,34 fizzles 09,28,30,31,32 duds 17 disruptions 29 Problems -------- Computer servers caused run delay. Restart required. TF went to 5.8 T when we asked for 5.4 T on shot 3. No prepuff on shot 17 produced a dud

Session Leader Comments
Jun 12 2007 08:36:12:253AM	1070612003	Bruce Lipschultz	Shot 3: First shot of the day. 1MW RF, BTor 5.9T, higher than programmed. Delay to check on this and RF breaker.
Jun 12 2007 09:44:22:100AM	1070612006	Bruce Lipschultz	Shot 6: Second plasma shot of the day after a few tests. We have lost D for the day due to a breaker problem. 2MW RF, BTor 5.4T. In and out of H-mode. One more shot with slightly higher density to optimize rf.
Jun 12 2007 10:51:02:363AM	1070612007	Bruce Lipschultz	Shot 7: 2MW RF, In and out of H-mode. 2*prad_2pi (diode) 484 kW before H-mode with RF on d/dt of prad_2pi ~ 4 before H-mode, 10 during H-mode density rise Now boronize, 70,70,70 for inner outer and pause locations of scan. 200s for sweep, 20 sec for pause. 35 mT for foreline pressure. Vertical field of 200 A. 53 minutes until ready for shot 8
Jun 12 2007 11:10:06:630AM	1070612008	Bruce Lipschultz	Shot 8: 2MW RF, In and out of H-mode. Boronization 70,70,70 for inner outer and pause locations of scan. 200s for sweep, 20 sec for pause. 35 mT for foreline pressure. Vertical field of 200 A. 2*prad_2pi (diode) 330 kW before H-mode with RF on d/dt of prad_2pi ~ 2 before H-mode, 5 during H-mode density rise all much lower 53 minutes from last shot
Jun 12 2007 11:27:49:253AM	1070612010	Bruce Lipschultz	Shot 10: 2MW RF, In and out of H-mode. 2nd shot after boronization (9 was a fizzle) at 70 cm 2*prad_2pi (diode) 410 kW before H-mode with RF on d/dt of prad_2pi ~ 3 before H-mode, 8 during H-mode density rise in between shots 7 and 8. next, boronize at 90 cm. Boronization started at 8 minutes past this shot.
Jun 12 2007 11:42:56:957AM	1070612011	Bruce Lipschultz	Shot 11: 2MW RF, In and out of H-mode. 1st shot after boronization at 90 cm 2*prad_2pi (diode) 565 kW before H-mode with RF on d/dt of prad_2pi ~ 2.4 before H-mode, 8 during H-mode density rise No problem for J-port even though the boronization location was at the antenna. repeat
Jun 12 2007 11:57:38:630AM	1070612012	Bruce Lipschultz	Shot 12: 2MW RF, In and out of H-mode. 2nd shot after boronization at 90 cm 2*prad_2pi (diode) 567 kW before H-mode with RF on d/dt of prad_2pi ~ 3.21 before H-mode, 8.5 during H-mode density rise next, boronize at 85 cm
Jun 12 2007 12:52:30:240PM	1070612013	Bruce Lipschultz	Shot 13: 2MW RF, In and out of H-mode. 1st shot after boronization at 85 cm Best shot so far in terms of stored energy (130 kJ) and radiated power. H89 ~ 1.35 2*prad_2pi (diode) 330 kW before H-mode with RF on d/dt of prad_2pi ~ 0.8 before H-mode, 2 during H-mode density rise repeat
Jun 12 2007 12:52:15:240PM	1070612014	Bruce Lipschultz	Shot 14: 2MW RF, In and out of H-mode. 2nd shot after boronization at 85 cm Stored energy lower (115 kJ) and radiated power. H89 ~ 1.2 2*prad_2pi (diode) 530 kW before H-mode with RF on d/dt of prad_2pi ~ 2.4 before H-mode, 6.8 during H-mode density rise boronize at 80 cm
Jun 12 2007 12:53:44:957PM	1070612015	Bruce Lipschultz	Shot 15: 2MW RF, In and out of H-mode. 1std shot after boronization at 80 cm Stored energy lower (135 kJ) and radiated power. H89 ~ 1.5 Injection at 0.8s jumped the radiated power up so it could have been better. Very good! 2*prad_2pi (diode) 250 kW before H-mode with RF on d/dt of prad_2pi ~ 0.3 before H-mode, 3 during H-mode density rise repeat
Jun 12 2007 01:35:30:897PM	1070612016	Bruce Lipschultz	Shot 16: 2MW RF, In and out of H-mode. 2nd shot after boronization at 80 cm Stored energy lower (120 kJ) and radiated power. H89 ~ 1.25 2*prad_2pi (diode) 475 kW before H-mode with RF on d/dt of prad_2pi ~ 1.6 before H-mode, 5.9 during H-mode density rise boronize at 75 cm
Jun 12 2007 02:33:09:100PM	1070612018	Bruce Lipschultz	Shot 18: 2MW RF, In and out of H-mode. 1st shot after boronization at 75 cm Stored energy 130 kJ. H89 ~ 1.7 2*prad_2pi (diode) 310 kW before H-mode with RF on d/dt of prad_2pi ~ 1.3 before H-mode, 4 during H-mode density rise repeat again
Jun 12 2007 02:00:52:473PM	1070612019	Bruce Lipschultz	Shot 19: 2MW RF, In and out of H-mode. 2nd shot after boronization at 75 cm Stored energy (120 kJ) , H89 ~ 1.25 2*prad_2pi (diode) 480 kW before H-mode with RF on d/dt of prad_2pi ~ 2.5 before H-mode, 6.4 during H-mode density rise repeat again to make sure we have done a good job of wearing it off
Jun 12 2007 02:03:26:630PM	1070612020	Bruce Lipschultz	Shot 20: 2MW RF, In and out of H-mode. 3rd shot after boronization at 75 cm Stored energy (120 kJ) , H89 ~ 1.25 2*prad_2pi (diode) 500 kW before H-mode with RF on d/dt of prad_2pi ~ 2.4 before H-mode, 7.5 during H-mode density rise boronize at R=70 cm now
Jun 12 2007 02:31:23:537PM	1070612021	Bruce Lipschultz	Shot 21: 2MW RF, In and out of H-mode. 1st shot after boronization at 70 cm Stored energy (123 kJ) , H89 ~ 1.3 2*prad_2pi (diode) 370 kW before H-mode with RF on d/dt of prad_2pi ~ 1.6 before H-mode, 5.5 during H-mode density rise This seems similar to R=70cm boronization done earlier (shot 8) repeat shot
Jun 12 2007 03:03:13:380PM	1070612022	Bruce Lipschultz	Shot 22: 2MW RF, In and out of H-mode. 2nd shot after boronization at 70 cm Stored energy (123 kJ) , H89 ~ 1.3 2*prad_2pi (diode) 544 kW before H-mode with RF on d/dt of prad_2pi ~ 2.5 before H-mode, 7.5 during H-mode density rise This seems similar to R=70cm boronization done earlier (shot 8) boronize at R=65 cm
Jun 12 2007 03:23:24:020PM	1070612023	Bruce Lipschultz	Shot 23: 2MW RF, In and out of H-mode. 1st shot after boronization at 65 cm Stored energy (115 kJ) , H89 ~ 1.25 2*prad_2pi (diode) 412 kW before H-mode with RF on d/dt of prad_2pi ~ 1.6 before H-mode, 6 during H-mode density rise repeat
Jun 12 2007 03:27:56:803PM	1070612024	Bruce Lipschultz	Shot 24: 1MW RF, J did not go, late H-mode. 2nd shot after boronization at 65 cm Stored energy (100 kJ) , H89 ~ 1.25 2*prad_2pi (diode) 300 kW before H-mode with RF on d/dt of prad_2pi ~ 1.5 before H-mode, 3.5 during H-mode density rise repeat to get full power
Jun 12 2007 04:03:26:357PM	1070612025	Bruce Lipschultz	Shot 25: 2MW RF 3rd shot after boronization at 65 cm Stored energy (113 kJ) , H89 ~ 1.17 2*prad_2pi (diode) 590 kW before H-mode with RF on d/dt of prad_2pi ~ 3 before H-mode, 8 during H-mode density rise next to R=60 boronization
Jun 12 2007 04:01:47:030PM	1070612026	Bruce Lipschultz	Shot 26: 2MW RF 1st shot after boronization at 60 cm Stored energy (117 kJ) , H89 ~ 1.25 2*prad_2pi (diode) 460 kW before H-mode with RF on d/dt of prad_2pi ~ 2.2 before H-mode, 7 during H-mode density rise repeat
Jun 12 2007 04:54:14:920PM	1070612027	Bruce Lipschultz	Shot 27: 2MW RF 2nd shot after boronization at 60 cm Stored energy (111 kJ) , H89 ~ 1.2 2*prad_2pi (diode) 480 kW before H-mode with RF on d/dt of prad_2pi ~ 3.2 before H-mode, 8 during H-mode density rise Next. boronization at 87 cm
Jun 12 2007 04:27:13:670PM	1070612028	Bruce Lipschultz	Shot 28: Fizzle
Jun 12 2007 04:56:04:640PM	1070612030	Bruce Lipschultz	Shot 30: fizzle go on to boronize at 83 cm
Jun 12 2007 05:27:47:903PM	1070612031	Bruce Lipschultz	Shot 31: Fizzle Try again
Jun 12 2007 05:57:43:513PM	1070612032	Bruce Lipschultz	Shot 32: fizzle try again
Jun 12 2007 06:01:12:327PM	1070612033	Bruce Lipschultz	Shot 33: 2MW RF 1st shot after boronization at 83 cm Stored energy (120 kJ) , H89 ~ 1.25 2*prad_2pi (diode) 395 kW before H-mode with RF on d/dt of prad_2pi ~ 1.6 before H-mode, 5.8 during H-mode density rise repeat
Jun 12 2007 06:02:47:390PM	1070612034	Bruce Lipschultz	Shot 34: 2MW RF 2nd shot after boronization at 83 cm Stored energy (116 kJ) , H89 ~ 1.25 2*prad_2pi (diode) 511 kW before H-mode with RF on d/dt of prad_2pi ~ 2.2 before H-mode, 7.8 during H-mode density rise done for today. Time to finish analysis

Physics Operator Comments
Jun 12 2007 07:16:31:303AM		Jim Irby	Loaded shot 1070608021 did load
Jun 12 2007 07:44:36:270AM		Jim Irby	RGA-0 and RGA-1 are off and valved off from the machine Servers had to be rebooted again this morning??! gatevalves will be toggled closed and kept closed for 5 minutes John Rice has asked that the HiREX gatevalve remain open
Jun 12 2007 08:12:53:427AM	1070612001	Jim Irby	no power shot --- test data system
Jun 12 2007 08:12:33:647AM	1070612002	Jim Irby	no power shot to test data system prepuff at 18 ms BP at 1.6e-7 Torr got prepuff
Jun 12 2007 09:26:07:927AM	1070612003	Jim Irby	try for plasma plasma into rampdown --- only .9 MW of ICRF TF went to 5.8 T instead of 5.4 T --- 163 kA with PLC limit at 165 kA Blown fuse in fmit#1 --- power room access to fix, cell and lab also for other reasons. Rick and Alan visit the hi-yard. Will have to get by with ~2 MW of ICRF for today.
Jun 12 2007 09:26:31:503AM	1070612004	Jim Irby	TF no power test
Jun 12 2007 09:26:43:113AM	1070612005	Jim Irby	TF no power test
Jun 12 2007 09:34:50:160AM	1070612006	Jim Irby	Bill checked DPCS demand signal to TF and found nothing wrong. Also verified that the PLC limit signal is the proper value Set TF PLC limit to 160 kA and will try for plasma Will try for 2 MW of ICRF --- no D-Port today BP at 3.8e-7 Torr Plasma into rampdown --- TF okay h-modes --- 1.8 MW of ICRF
Jun 12 2007 09:58:24:473AM	1070612007	Jim Irby	repeat with higher ICRF if possible then setup for boronization nl04 request from 0.9 to 1.0e20 /m^2 --- RF fiducial level plasma into rampdown --- 1.8 MW of ICRF w/o any trips h/(h+d) about 7 or 8% TF okay preparing to open diborane bottle
Jun 12 2007 10:52:19:003AM	1070612008	Jim Irby	diborane bottle is now open had to enter cell suited up to: reset ef4 and find out why the bolo shutter would not close. reduced prepuff from 18 to 8 ms BP 1.9e-6 Torr plasma into rampdown --- startup okay, but pressure was very low, could probably have left prepuff alone.
Jun 12 2007 11:10:02:990AM	1070612009	Jim Irby	prepuff to 15 ms from 8 ms fizzle --- fields okay, too much gas probably
Jun 12 2007 11:26:16:300AM	1070612010	Jim Irby	prepuff down to 10 ms BP 1.1e-6 Torr plasma into rampdown
Jun 12 2007 11:43:40:600AM	1070612011	Jim Irby	prepuff back to 8 ms loaded boronization for 10 minutes done at 11:30; 19 minutes into RECOOL BP 2.5e-6 Torr plasma into rampdown
Jun 12 2007 12:04:19:800PM	1070612012	Jim Irby	prepuff to 10 ms plasma into rampdown Something wrong with ICRF signals --- indicated timing not correct for fmit#3. Yijun thinks the antennas did run together.
Jun 12 2007 12:16:21:253PM	1070612013	Jim Irby	boronization start 6:43 into recool boronization end at 16:32 into recool into INIT at 20:00 into RECOOL --- BP 3.5e-6 Torr prepuff from 10 to 8 ms loaded at PULSE BP 2.9e-6 Torr plasma into rampdown -- much nicer looking h-modes -- stored energy up
Jun 12 2007 12:27:50:770PM	1070612014	Jim Irby	prepuff to 10 ms plasma into rampdown --- not is good
Jun 12 2007 12:49:20:287PM	1070612015	Jim Irby	prepuff to 8 ms loaded boronization started 6:36 into RECOOL boronization finished 16:36 into RECOOL diborane pressure overshot up to 61 mTorr BP at INIT 3.4e-6 Torr BP at PULSE 2.8e-6 Torr plasma into rampdown
Jun 12 2007 01:05:16:020PM	1070612016	Jim Irby	prepuff to 10 ms loaded plasma into rampdown
Jun 12 2007 01:27:34:223PM	1070612017	Jim Irby	prepuff to 8 ms loaded boronization started RECOOL+4:08 boronization stopped RECOOL+14:12 BP 3.9e-6 at INIT dud --- no prepuff gas
Jun 12 2007 01:43:23:940PM	1070612018	Jim Irby	on previous shot there was no voltage applied to the B-TOP PIEZO just try again plasma into rampdown --- piezo signal okay
Jun 12 2007 01:49:37:537PM	1070612019	Jim Irby	prepuff back to 10 ms BP 3.1e-6 at INIT plasma into rampdown
Jun 12 2007 02:03:04:880PM	1070612020	Jim Irby	prepuff from 10 to 11 ms --- since I'm not sure what to do, I did very little. plasma into rampdown --- starup looks good
Jun 12 2007 02:25:06:270PM	1070612021	Jim Irby	prepuff to 8 ms loaded boronization started RECOOL+07:15 boronization stopped RECOOL+16:55 BP at INIT 3.8e-6 Torr plasma into rampdown
Jun 12 2007 02:36:22:567PM	1070612022	Jim Irby	prepuff to 10 ms loaded plasma into rampdown
Jun 12 2007 03:00:54:787PM	1070612023	Jim Irby	prepuff back to 8 ms loaded boronization started at RECOOL+06:38 boronization stopped at RECOOL+16:38 plasma
Jun 12 2007 03:13:20:927PM	1070612024	Jim Irby	prepuff to 10 ms loaded BP 2.9e-6 Torr at INIT plasma
Jun 12 2007 03:29:09:613PM	1070612025	Jim Irby	repeat --- didn't have all the rf on shot 23 plasma --- rf okay
Jun 12 2007 03:52:03:713PM	1070612026	Jim Irby	prepuff to 8 ms boronization started at RECOOL+07:00 boronization stopped at RECOOL+17:00 20 minutes to get to INIT plasma
Jun 12 2007 04:04:25:327PM	1070612027	Jim Irby	prepuff to 10 ms loaded plasma
Jun 12 2007 04:39:37:717PM	1070612028	Jim Irby	prepuff to 8 ms loaded boronization started at RECOOL+06:25 boronization stopped at RECOOL+16:25 INIT RECOOL+20:00 fizzle --- fields okay,
Jun 12 2007 04:49:35:013PM	1070612029	Jim Irby	no changes plasma --- disruption at 0.98 s --- injection does us in
Jun 12 2007 04:59:27:937PM	1070612030	Jim Irby	prepuff to 10 ms --- not sure what disruption has done to the startup fizzle
Jun 12 2007 05:23:13:780PM	1070612031	Jim Irby	prefill to 8 ms loaded boron start 08:10 boron stop 18:10 fizzle!
Jun 12 2007 05:35:03:827PM	1070612032	Jim Irby	try again --- no changes fizzle --- large carbon peak, gas low, h-alpha high
Jun 12 2007 05:52:26:407PM	1070612033	Jim Irby	fill to 10 ms plasma at last into rampdown startup carbon still high --- still recovering from disruption?
Jun 12 2007 05:58:30:670PM	1070612034	Jim Irby	no changes BP at INIT 2.5e-6 Torr plasma into rampdown we are done...

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	07:31:07:520AM	Test	Bad	Igor -action monitor not responding
2	08:01:08:613AM	Test	Ok	Cycle test with gas
3	08:23:08:333AM	Plasma	Ok
4	09:03:26:503AM	Test	Ok	TF current
5	09:13:58:177AM	Test	Ok	TF current
6	09:30:16:943AM	Plasma	Ok
7	09:46:50:723AM	Plasma	Ok
8	10:43:14:490AM	Plasma	Ok
9	10:57:27:770AM	Plasma	Ok
10	11:09:49:723AM	Plasma	Ok
11	11:34:59:147AM	Plasma	Ok
12	11:47:22:660AM	Plasma	Ok
13	12:09:34:317PM	Plasma	Ok
14	12:22:23:473PM	Plasma	Ok
15	12:46:17:503PM	Plasma	Ok
16	12:59:17:927PM	Plasma	Ok
17	01:20:38:990PM	Plasma	Ok
18	01:33:16:740PM	Plasma	Ok
19	01:45:48:050PM	Plasma	Ok
20	01:58:13:770PM	Plasma	Ok
21	02:21:44:583PM	Plasma	Ok
22	02:34:21:943PM	Plasma	Ok
23	02:58:05:600PM	Plasma	Ok
24	03:11:38:003PM	Plasma	Ok
25	03:24:46:753PM	Plasma	Ok
26	03:49:06:320PM	Plasma	Ok
27	04:01:37:780PM	Plasma	Ok
28	04:23:59:450PM	Plasma	Ok
29	04:36:27:467PM	Plasma	Ok
30	04:49:42:437PM	Plasma	Ok
31	05:13:41:467PM	Plasma	Ok
32	05:26:42:857PM	Plasma	Ok
33	05:39:11:967PM	Plasma	Ok
34	05:51:50:107PM	Plasma	Ok

System Availability

Jun 12 2007 07:30:38:410AM

System Available Comment Availability Changed Owner Description Who Can Change Active MHD yes Fully operational Mar 28 2007 09:19PM (sears) Joe Snipes Active MHD Antenna sears,snipes BES yes vertical array of six views at R ~ 87.3 cm, radial array of three views out to R ~ 89 cm, both at outboard midplane. Three discrete fiber views of beam at R ~ 70.0, 76.5 and 82.5 cm. Feb 06 2007 10:00AM (bravenec) Ron Bravenec Beam Emission Spectroscopy bravenec Bolometers yes 2Pi diode operational, 2Pi foil being upgrade for noise resistance. Midplane foils calibrated for senstivity, still need better time constants. Midplane and divertor AXUV being digitized, processing calibration data. May 29 2007 11:22AM (mlreinke) Matt Reinke Bolometers hutch,mlreinke Boronization yes First Boronization 5/9/07 May 10 2007 04:55PM (irby) Jim Irby Boronization dekow,irby CNPA no   Jan 14 2007 02:06PM  Ron Parker Compact Neutral Analyzer parker Cryopump - Upper Divertor yes The cryopump is operational in a manual mode. We will be working on interfacing its control system with the C-Mod state machine for semi-automatic operation. May 30 2007 07:58PM (labombard) Brian LaBombard Upper Divertor Cryopump irby,labombard CXRS yes The pedestal toroidal array was installed, spatially and absolutely calibrated. There are 10 chords intersect the beam at the major_R_range=[75,4:87.4]cm. Spatial resolution: 1.2 cm. The F-top poloidal array was installed and spatially calibrated. There are 19 chords intersect the beam at the major_R_range=[67.8:91.0]cm. Spatial resolution: 1.22 cm. May 01 2007 12:31PM (bespam) Bill Rowan Charge Exchange Spectroscopy bespam,blip,rachmcd,rowan D Alpha yes \ha2_bright and \SPECTROSCOPY::TOP.VUV.VIS_SIGNALS:MCP_VIS_SIG1 are available Mar 11 2007 10:28PM (terry) Jim Terry Balmer Alpha Monitor irby,terry,wolfe Dalsa yes camera is re-installed, and view has been calibrated Feb 26 2007 03:28PM (marmar) Earl Marmar Visible Bremsstrahlung marmar Disruption Mitigation no   Jan 14 2007 02:02PM  Bob 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,ldorf,terry DNB yes All systems are operational, but as of 28 March 2007, the beam needs additional conditioning for full performance shots Mar 28 2007 09:36AM (beals) Bob Granetz Diagnostic Beam beals,granetz FRC-ECE yes All channels now working. Apr 04 2007 11:04AM (phillips) Perry Phillips Heterodyne ECE-32 channels phillips G-Side Ratiomatic yes The gauge is operational. Mar 30 2007 10:54AM (labombard) Brian LaBombard G-side ratiomatic ionization gauge labombard,toland GPC yes Chs 1-8 operational. May 24 2007 08:40AM (hubbard) Amanda Hubbard ECE Polychromater hubbard,schmidt GPC2 yes Most channels (except 1,5,8,10,17) operational. Jun 08 2007 08:29AM (hubbard) Amanda Hubbard ECE Polychromater hubbard,schmidt GPI yes New view just outside of the lower X-point is operational, but data is being archived locally , not to the tree. Midplane GPI is not operational. Mar 27 2007 01:59PM (terry) Jim Terry Gas Puff Imaging terry,zweben H/D yes spectral calibration needs to be checked, but system should be ready for the run Feb 26 2007 03:28PM (marmar) Earl Marmar H/D Ratio marmar Hirex Jr yes   Mar 06 2007 08:59AM (rice) John Rice High Resolution X-Ray ince,rice Hirex Sr yes Storing Data, but profiles not yet available Apr 27 2007 01:20PM (ince) John Rice High Resolution X-Ray ince,rice HXR yes Something might be wrong with channel 26; all others working fine. Mar 23 2007 10:43AM (schmidt) Ron Parker Hard X-Ray Array parker,schmidt ICRF D-Antenna yes 80.5 MHz. ready Mar 28 2007 08:50AM (ylin) Steve Wukitch D-port antenna wukitch,ylin ICRF E-Antenna no 80 MHz. FFT installation/coaxial line needs more work Mar 16 2007 09:32AM (ylin) Steve Wukitch E-port antenna wukitch,ylin ICRF J-Antenna yes 78 MHz Apr 04 2007 08:56AM (ylin) Steve Wukitch J-port antenna wukitch,ylin Lower Hybrid no 6B Pressure window failed. Arcing in 6B, 8B,9B & 23B. May 04 2007 03:44PM (dterry) Ron Parker Lower Hybrid dterry,parker LPI yes   Apr 26 2007 08:35PM (bose) Earl Marmar Lithium Pellet Injector bose,marmar Ly-alpha yes Midplane data being digitized, processing calibration data. Divertor views showing significant noise, and not available. Upper view being debugged. May 29 2007 11:23AM (mlreinke) Matt Reinke Lyman alpha cameras labombard,mlreinke McPherson yes Working normally. Apr 19 2007 09:52AM (mlreinke) Jim Terry VUV Spectrometer mlreinke,terry Michelson yes Operational. Mar 28 2007 08:33AM (hubbard) Amanda Hubbard ECE Te Profiles hubbard,schmidt MKS yes E-Top, E-Bottom, F-top (cryo), G-side, and B-bottom are operational. F-top gauge has a 'sniffer tube' to measure pressures in cryopump gas box. Mar 20 2007 06:42PM (g) Brian LaBombard Baratron pressure gauges labombard MLP no Initial tests on the A-port scanning probe went well. We need to take care of some control glitches that caused some component failures. May 30 2007 08:01PM (labombard) Brian LaBombard Mirror Langmuir Probe Electronics System labombard MSE no (1) Bandpass filters replacement underway (2) Beam-into-gas spectrum measurement underway (3) Shutter mechanism currently unstable; remains open. (4) Expect beam-into-gas calibrations complete about 4/24. Apr 03 2007 12:05PM (sscott) Steve Scott Motional Stark Effect jinseok,sscott Neutrons yes Both neutron systems are fully operational Apr 05 2007 11:19AM (fiore) Catherine Fiore Neutron Detectors fiore Neuts and Hards yes operational Mar 21 2007 04:29PM (irby) Jim Irby X-Ray/Neutron Detector at K-Hor irby NINJA yes All capillaries displayed by the NINJA_CONTROL GUI have been tested. NINJA puffed on 1070329009 (A-B limiter). Mar 29 2007 11:47AM (terry) Brian LaBombard NINJA gas puff labombard,terry PCI yes The system is to be optimized. May 30 2007 01:12PM (lianglin) Miklos Porkolab Phase Contrast Imaging edlund,lianglin,ntsujii,porkolab Penning Gauges yes 8 in-situ Penning ionization gauges appear to be operational: CB_DivU, CB_OutL, CB_DivL, KA_OutU, KA_OutL, B_DivL, Cryo_1, Cryo_2. Cryo_1 and Cryo_2 are new and installed in the upper cryopump 'gas-box'. Mar 13 2007 10:01PM (labombard) Brian LaBombard Penning Ionization Gauges labombard Plasma TV yes WIDE1, WIDE2 (chan 33), DANT, JANT and DIV (without an ND filter) are operational. Mar 27 2007 01:53PM (terry) Jim Terry Video of plasma via several cameras dekow,irby,terry,wolfe Polarimeter no Retro shutter closed Mar 15 2007 11:00AM (irby) Jim Irby C-Mod Polarimeter irby Probe Array - ISD yes Probes at 15 of the 16 poloidal locations ('ramped' geometry) are operational. n,Te, particle flux reported every 10 ms. Mar 13 2007 09:47PM (labombard) Brian Labombard Inner Lower Divertor Probe Array labombard Probe Array - LH yes All 6 probes on the lower hybrid launcher (tungsten, 1.5 mm projection) are operational. Mar 13 2007 09:46PM (labombard) Brian LaBombard Lower Hybrid Probe Array labombard Probe Array - OSD yes Probes at 10 poloidal locations (one 'ramped' and one 'flush') are operational. n,Te, particle flux reported every 10 ms. Mar 13 2007 09:45PM (labombard) Brian LaBombard Outer Lower Divertor Probe Array labombard Probe Array - UDIV yes 14 probes are operational ('ramped' geometry). n,Te, particle flux reported every 10 ms.Two high-gain channels are installed and operational for ECDC plasma diagnosis. Mar 13 2007 12:46PM (labombard) Brian LaBombard Upper Divertor Probe Array labombard Reflectometer yes The 60, 110, 88LSB, 88USB and 88 are connected but still being tested. The Swept frequency channel is running DC voltages from 5V-7V, also in the testing stage. Jun 01 2007 09:11AM (dominguez) Earl Marmar Reflectometer dominguez,marmar Scanning Probe - ASP yes Perpendicular Mach probe head is installed. The drive is operational. Mar 15 2007 09:09PM (labombard) Brian LaBombard A-Port Scanning Probe labombard Scanning Probe - FSP yes Perpendicular Mach probe head is installed. The probe drive is now operational. Mar 13 2007 09:51PM (labombard) Brian LaBombard F-Port Scanning Probe labombard Scanning Probe - WASP yes A-port WASP successfully collected data on 04/04. Some intermittent open circuit on SE Electrode. K-WASP took data on 04/11. Both ready to scan as needed. Apr 12 2007 04:18PM (nsmick) Brian LaBombard Inner Wall Scanning Probe labombard,nsmick TCI yes NL_04 at 71.04 cm from 3/9/07 calibration May 23 2007 07:38AM (irby) Jim Irby Two-Color Interferometer irby,murray TS - Core yes 2 lasers, 11 spatial channels. Density is calibrated based on ECE cutoffs obtained on 4 May 2007. Additional spatial channels will be added over the next several weeks. May 10 2007 10:37AM (jwhughes) Jerry Hughes Core Thomson scattering jwhughes TS - Edge yes 2 lasers, 20 spatial channels. Fiber holder position is -125mm (standard). Density is cross-calibrated to the core system, based on shots 1070504014, 016, and 019. May 21 2007 02:39PM (jwhughes) Jerry Hughes Millimeter resolution edge Thomson scattering jwhughes Vispec yes 350 and 670 nm, 4 spatial channels May 04 2007 01:02PM (agraf) Alex Graf Visible Spectrometer agraf