Alcator C-Mod Run 1120713 Information

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Miniproposals
Miniproposal:643
Date Filed: 1/27/2011
Title:Optimization of I-mode in normal field, USN
First Author:Earl Marmar
Session Leader:Earl Marmar (shots 1-31)

Operators
Session leader(s):Earl Marmar
Physics operator(s):Steve Wukitch
Engineering operator(s):Gary Dekow,Andy Pfeiffer,Ed Fitzgerald

Engineering Operator Run Comment
PO-plan: MP643 Optimization of I-mode in normal field, USN

Session Leader Plans
Entered: Jul 13 2012 08:54:55:570AM
Author: Earl Marmar
MP643 Optimization of I-mode in normal field, USN

SL: Marmar/Hubbard
PO: Wukitch

Shot sequence plan
1) Use 1101209026 as starting equilibrium, but lower Ip to 1.1 MA, raise Bt to 5.8 T
2) Post-boron ICRF recovery, until reliable 4 MW (6-8 shots)
3) Evaluate post-boron I-mode with target shot 1101209024/26, 4.5 MW ICRF, but reduce ICRF flattop time to 0.3 seconds, to reduce upper divertor energy deposition, as in figure 3. (3 shots)
4) Reduce density shot to shot, evaluating I-mode access, radiation, H-mode access (if reached). Densities (nl04) should be 1.0, 0.7, 0.5, 0.4e20. Watch for significant moly/radiated power and adjust neon as required. If flat-top runaways or locked modes become too problematic, stop the density scan and don't go lower. (8-10 shots).
5) From step 4, choose the lowest density with good I-mode performance. Assuming there was no transition to H-mode, repeat these conditions with 0.5 s ICRF flattop (2 shots).
6) If H-mode still not seen, apply maximum available ICRF power for these conditions (4 shots).
7) Do the high density scan (nl_04=1.5, 2.0, 2.25, 2.5 e20), 4.5 MW, 0.3 s ICRF flattop. If ICRF reaches high density limit (neutral pressure), truncate the scan. If there appears to be an L-mode target density limit for accessing I-mode (even with good RF), try fueling to higher density after getting into I-mode at lower target density. For these higher density cryopumped shots, additional fueling from the high field side with NINJA will probably be required; this has also been shown to be helpful with the ICRF density limit. (10 shots)
8) Using the highest density shot with good I-mode from step 7, increase ICRF flattop to 0.5 s, and, then, if no transition to H-mode seen, increase power in subsequent shots to max available (as in step 6). (6 shots)

The MP plan is based on a 10 hour run-day. Since we are planning for 8 hours today, we'll need to cut back on the later parts of the sequence. The low density shots, steps 4-6, are the highest priority.

Physics Operators Plans
Entered: Jul 12 2012 04:58:37:580PM
Author: Steve Wukitch
-----------------
Engineering Setup
-----------------
PO-plan: MP643 Optimization of I-mode in normal field, USN

Run begins at 09:00 and ends at 17:00

Power systems as on: 1101209026

Acoil: +Dtop -Dbot -Jtop +Jbot (standard) Hybrid Enabled

Gas setup:

Fill B-Top with 6 psi D2 Hybrid enabled (PG4)
fill B-side lower with 1 psi Ar Hybrid DISABLED (PG1)
leave B-side upper as is Hybrid DISABLED (PG2)
fill B-main (C-side) with 40 psi D2 Hybrid enabled (PG3)
fill NINJA with 10 psi D2 DISABLED
fill H-bottom with 3 psi Ne Hybrid DISABLED (PG5)

Enable gate-valves and shutters: ECE, VUV, HiREX Sr, Xeus/LoWEUS
Leave z-bolo shutter as is (should be open)

Torvac gatevalve toggle (yes/no): no

Boronization(yes/no): no
Overnight ECDC (yes/no): yes
ICRF(yes/no): yes
LH(yes/no): allowable
Cryopump (yes/no): yes
DNB (yes/no): allowable

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

------------------------------
Physop Plan
------------------------------
Startup will be from 1120711023 with modification to prepuff due to cryopump

Start with 1101209026 BT=5.6T, Ip=1.2 MA, nl04=1.1 which has lower
delta_upper than desired: kappa=1.7, delta_upper 0.7 to â?¥0.8
delta_lower .25 to â?¥.3

We chose Ne for low Z seeding:
allows Churchill to piggyback (N interfers with CXR signals)
easier to switch to N2
Seeding parameters will start with PG5 0.4-0.55s at 60 V

follow Session Leader plan
------------------------------

Session Leader Summaries
Entered: Jul 16 2012 01:56:39:333PM
Author: Earl Marmar
While there were a number of shots with early disruptions, we were able to make good progress on the miniproposal, particularly with respect to the density scan portion of the plan. Discharges of interest were at 1.1 MA (from the first part of the run) and 1.2 MA. Attempts to run 1.1 MA and 1.0 MA ran into difficulties later in the day (disruptions, impurity issues, poor heating, possible locked modes in some cases). Line average density was scanned from 1.5e20 to 2.8e20; most shots had ICRF power at or above 4 MW, and many had 5.0 or 5.5. I-mode access was clearly sensitive to density, and in no case was H98 larger than 0.8. Shots for further analysis: 1, 3, 6, 7, 10, 13, 16, 17, 18, 19, 22, 24, 30, 31. Shot 30 had the only clear I to H transition during the day.

There were a number of shots that exhibited mildly enhanced H98 (above 0.5) and high central Te, but did not show clear signs of an edge temperature barrier or obvious changes to fluctuations. Perhaps the best example is shot 10. Raising the density gave I-mode (see e.g. shots 17 and 19). Shot 19 had a density ramp-up, with the transition to I-mode occurring when nel reached about 1.3e20.

Physics Operator Summaries
Entered: Jul 13 2012 05:15:24:783PM
Author: Steve Wukitch
Run Summary

Run was plagued by disruptions which complicated the run plan. We had
a few disruptions ~0.45 s that appeared to be cured by changing the IP
gain at 0.32 s to 4 from 5. Plasmas were diverting near cross over and
we lost control at a critical time. We were unable to run a good
plasma at 1.1 MA in USN. We were either disrupting or experiencing
lock modes. I-modes that were obtained were not of particularly high
quality. Startup was fairly robust and we needed only to pay
attention to prefill pressure to control run aways.


attempts 31
disruptions 13
fizzles 1
plasmas 30

Session Leader Comments
Jul 13 2012 09:17:55:070AM1120713001Earl Marmarstep 1/2 - 1.1 MA, 5.9 T (will adjust to 5.8 for next shot)
density above target at start of RF, and then rises further
looks like a significant MARFE; very large signals on H/D spectrometer

not much heating; solidly L-mode (or below)
Jul 13 2012 09:27:55:273AM1120713002Earl Marmarnl_04 target to 0.9e20

good 2 MW ICRF shot (J-port faulting)

no MARFE this time, better heating, L-mode or slightly above
modest density rise during RF
Jul 13 2012 09:44:43:350AM1120713003Earl Marmargood 4 MW ICRF shot
H98 is starting to creep up above 0.5, at least until the density increases during the RF
NINJA also contributes some fueling after 1 second (helium)
Jul 13 2012 10:01:46:850AM1120713004Earl Marmardisrupt at very start of RF pulse
big increase in Prad just prior to the disruption
Jul 13 2012 10:32:43:770AM1120713005Earl Marmarearly disruption (200 msec)
Jul 13 2012 10:33:30:730AM1120713006Earl Marmargood 4 MW shot
still a bit of fueling with ICRF, but not much
might be getting close, but no clear I-mode
Jul 13 2012 10:39:32:480AM1120713007Earl Marmar4 MW shot
disrupt right after RF turnoff

Jul 13 2012 11:09:03:253AM1120713009Amanda Hubbard
Filling in for Earl. Disrupts 0.45 s, vertical instability.

Going to try going back to the lower B and Ip, but more power to see if we get I-mode that way.
Jul 13 2012 11:35:07:520AM1120713010Amanda HubbardGot full shot, 4.5 MW, (5.8 T, 1.1 MA).

Very high Te and big sawteeth, but not an evident edge barrier.

Next: Reduce Bt to 5.6 T to put ICRF more on axis, and try to reduce density which has been at nel 10^20, nebar 1.5, on the high side for I-modes at this current. Also request another 0.5 MW.

Radiation is fairly high, but Matt reports it is mostly Moly.

First, catch our I-mode. Then try to reduce density further as per run plan...
Jul 13 2012 11:48:23:073AM1120713011Amanda HubbardDisrupts - x-ray centroid indicates vertical instability at 0.4 secs. Try again.
Jul 13 2012 11:51:39:993AM1120713012Amanda HubbardDisruption at exactly the same time, unfortunately.
Jul 13 2012 04:36:05:577PM1120713024Earl Marmarrepeat 22 (1.2 MA) but add PG3 from 0.8 to 0.9 s

very small density increase, RF trips, briefly I-mode'ish and then never recovers after the trips
Jul 13 2012 04:35:34:653PM1120713029Earl Marmarrepeat 24 (1.2 MA) but increase magnitude of PG3 puff (still from 0.8 to 0.9 s)

I-mode'ish, then RF trips
Jul 13 2012 04:48:54:217PM1120713030Earl MarmarPG3 puff now from 0.8 to 0.95 s
Possible H-mode transition, RF trip

Physics Operator Comments
Jul 13 2012 09:20:56:317AM1120713001Steve Wukitch001 request: BT=5.8 T, Ip=1.1 MA, nl_04~1
H-bottom (PG5) enabled - 0.4-0.55s at 60 V
loaded seg1 startup from 11207011023
loaded seg2 from 1101209026
Load at 13-Jul-2012 08:55:04.00
result: plasma - BT=5.9 T, nl_04 ramping - too much neon?

next: reduce Ne to 25 V
reduce BT from 5.9 (163.6) to 5.8 T (161)
reduce nl04 to 0.9
Load at 13-Jul-2012 09:17:14.00
Jul 13 2012 09:28:20:890AM1120713002Steve Wukitch002 request: BT=5.8 T, Ip=1.1 MA, nl_04~0.9

result: plasma - BT~5.8 T, Ip~1.1, nl04~1 at RF turn on
J failed?
next: Ne to 50 V
Load at 13-Jul-2012 09:27:48.00

Jul 13 2012 09:40:48:300AM1120713003Steve Wukitch003 request: BT=5.8 T, Ip=1.1 MA, nl_04~0.9

result: plasma - RF fueling

next: lower nl04~0.8
Load at 13-Jul-2012 09:39:51.00

Jul 13 2012 10:02:22:003AM1120713004Steve Wukitch004 request: BT=5.8 T, Ip=1.1 MA, nl_04~0.8

result: plasma - disruption ~0.7 s
killer Fe injection

next: raise nl04~0.9
lower prepuff to 47 ms from 52 ms
move Ar puff to 0.3-0.4 s at 100 V (PG1)
Load at 13-Jul-2012 10:00:43.00

Jul 13 2012 10:15:21:500AM1120713005Steve Wukitch005 request: BT=5.8 T, Ip=1.1 MA, nl_04~0.8

result: plasma - disruption ~0.2 s
higher fill pressure - result
next: leave prepuff
fix Ar pulse
Load at 13-Jul-2012 10:13:55.00

Jul 13 2012 10:27:36:387AM1120713006Steve Wukitch006 request: BT=5.8 T, Ip=1.1 MA, nl_04~0.8

result: plasma - startup is back
prefill pressure is still higher than 003
next: Ne to 30 V (PG5)
leave prepuff

Jul 13 2012 10:30:06:427AM1120713006Steve Wukitch006 request: BT=5.8 T, Ip=1.1 MA, nl_04~0.8

result: plasma - startup is back
prefill pressure is still higher than 003
next: Ne to 30 V (PG5)
leave prepuff as is
Load at 13-Jul-2012 10:29:37.00
Jul 13 2012 10:42:57:850AM1120713007Steve Wukitch007 request: BT=5.8 T, Ip=1.1 MA, nl_04~0.9

result: plasma - disruption at 1.26s
prefill pressure better but disruption will mess it up again
next: reduce prepuff by 3 ms
BT to 5.6 T (158 kA)
Ip to 1.2 MA
Load at 13-Jul-2012 10:41:23.00

Jul 13 2012 10:59:39:943AM1120713008Steve Wukitch008 request: BT=5.6 T, Ip=1.2 MA, nl_04~0.9

result: plasma -remarkably similar to 005
prefill pressure is higher
current rise is too slow - need to reduce prepuff lower
next: reduce prepuff by 3 ms
BT to 5.6 T (158 kA)
Ip to 1.2 MA
Load at 13-Jul-2012 10:59:18.00

Jul 13 2012 11:19:22:477AM1120713009Steve Wukitch009 request: BT=5.6 T, Ip=1.2 MA, nl_04~0.9

result: plasma - disruption 0.45 s
prefill pressure is better
TMX breaker - vertically unstable as a result
next: reduce prepuff by 3 ms (41 ms)
BT to 5.8 T (161 kA)
Ip to 1.1 MA
Load at 13-Jul-2012 11:10:48.00
Jul 13 2012 11:32:58:940AM1120713010Steve Wukitch010 request: BT=5.8 T, Ip=1.1 MA, nl_04~0.9

result: plasma - better - I-mode looking
Prf=4.5
next: increase prepuff by 3 ms (44 ms)
BT to 5.6 T (158 kA)
nl04~0.8
raise PRF to 5 MW
Load at 13-Jul-2012 11:32:22.00

Jul 13 2012 11:51:04:520AM1120713011Steve Wukitch011 request: BT=5.6 T, Ip=1.1 MA, nl_04~0.8

result: plasma - had hards - looks like I should have increased prepuff further
disruption
vertically unstable
next: increase rcur prior to 0.4 s from 0.656 to 0.659
Load at 13-Jul-2012 11:47:36.00

Jul 13 2012 12:03:52:893PM1120713012Steve Wukitch012 request: BT=5.6 T, Ip=1.1 MA, nl_04~0.8

result: plasma - disruption
vertically unstable?
prefill pressure is low
next: increase prefill by 4 ms (45 ms)
ZXU reduced at 0.4 s to 0.005 from 0.01
Load at 13-Jul-2012 12:03:21.00
Jul 13 2012 12:19:18:350PM1120713013Steve Wukitch013 request: BT=5.6 T, Ip=1.1 MA, nl_04~0.8

result: plasma - FL
RF faulting
next: improve ZXU in rampdown (bring it down with the current)
Load at 13-Jul-2012 12:18:03.00
Jul 13 2012 12:34:56:940PM1120713014Steve Wukitch014 request: BT=5.6 T, Ip=1.1 MA, nl_04~0.8

result: plasma - another disruption at 0.45 s
vertical instability?
next: increase current to 1.2 MA
change Ip gain to 4 at 0.32 s instead of 5
Load at 13-Jul-2012 12:32:27.00
Jul 13 2012 12:57:51:123PM1120713015Steve Wukitch015 request: BT=5.7 T, Ip=1.2 MA, nl_04~0.8

result: plasma - rf is faulting
less hesitation at OH cross over

next: raise Ne to 50 V
nl04 to 1
Load at 13-Jul-2012 12:56:40.00
Jul 13 2012 01:12:23:530PM1120713016Steve Wukitch016 request: BT=5.6 T, Ip=1.2 MA, nl_04~1

result: plasma -

next: nl04 to 1.2
Load at 13-Jul-2012 13:10:55.00
Jul 13 2012 01:29:16:570PM1120713017Steve Wukitch017 request: BT=5.6 T, Ip=1.2 MA, nl_04~1.2

result: plasma -
hards during startup
next: nl04 to 1.1 at 0.8 s and ramp to 1.4 at 1.2 s
lengthen RF pulse to 1.2 s
increase prepuff by 2 ms (47 ms)
Load at 13-Jul-2012 13:26:45.00

Jul 13 2012 01:43:08:770PM1120713018Steve Wukitch018 request: BT=5.6 T, Ip=1.2 MA, nl_04~1.1-1.4

result: plasma - disruption at 1.1 s
hards during startup
next: pre-emptive lowering of prepuff by 5 ms (40 ms)
neon to 60 V and delay to 0.5 s

Jul 13 2012 02:04:51:250PM1120713019Steve Wukitch019 request: BT=5.6 T, Ip=1.2 MA, nl_04~1.1-1.4

result: plasma - disruption at 1.2 s
killer tungsten
next: BT~5.55 T
Ip~1.1 MA
nl04~1.1
shorten Prf to 1 s
Load at 13-Jul-2012 14:00:30.00
Jul 13 2012 02:21:39:343PM1120713020Steve Wukitch020 request: BT=5.55 T, Ip=1.1 MA, nl_04~1.1

result: plasma - disruption at 0.95 s
ugly - lets not repeat it
next: repeat 017
BT=5.5, Ip=1.2, nl04~1.1
Load at 13-Jul-2012 14:21:05.00
Jul 13 2012 02:34:41:397PM1120713021Steve Wukitch021 request: BT=5.5 T, Ip=1.2 MA, nl_04~1.1

result: plasma (fl)

next: reload 017
BT=5.5, Ip=1.2, nl04~1.1
Load at 13-Jul-2012 14:34:17.00
Jul 13 2012 02:49:26:127PM1120713022Steve Wukitch022 request: BT=5.5 T, Ip=1.1 MA, nl_04~1.1

result: plasma (fl)
keeper
next: Ip to 1.1 MA
nl04=1.1
Load at 13-Jul-2012 14:48:46
Jul 13 2012 03:25:51:457PM1120713024Steve Wukitch024 request: BT=5.5 T, Ip=1.2 MA, nl_04~1.2

result: plasma (fl)

next: recall 023
move upper xpoint to smaller major radius
RXU more negative by 5 mm. (from -0.015 to -.020)
Load at 13-Jul-2012 15:25:16
Jul 13 2012 03:37:19:567PM1120713025Steve Wukitch025 request: BT=5.5 T, Ip=1.1 MA, nl_04~1.1

result: plasma - disruption 0.7 s

next: lower Ip to 1 MA
Load at 13-Jul-2012 15:36:36
Jul 13 2012 03:44:50:390PM1120713025Steve Wukitch025 request: BT=5.5 T, Ip=1.1 MA, nl_04~1.1

result: plasma - disruption 0.7 s

next: lower Ip to 1 MA
Load at 13-Jul-2012 15:44:15

Jul 13 2012 03:55:26:790PM1120713026Steve Wukitch026 request: BT=5.5 T, Ip=1.0 MA, nl_04~1.1

result: plasma - locked mode?!?

next: nl04~0.9

Jul 13 2012 04:00:03:583PM1120713026Steve Wukitch026 request: BT=5.5 T, Ip=1.0 MA, nl_04~1.1

result: plasma - locked mode?!?

next: nl04~0.9
Load at 13-Jul-2012 15:59:48
Jul 13 2012 04:09:47:983PM1120713027Steve Wukitch027 request: BT=5.5 T, Ip=1.0 MA, nl_04~1

result: fizzle

next: raise fill pressure
pg4 from 40 to 45 ms
Load at 13-Jul-2012 16:08:09

Jul 13 2012 04:50:03:833PM1120713030Steve Wukitch030 request: BT=5.5 T, Ip=1.2 MA, nl_04~1.2

result: plasma

next: nl04~0.7
Load at 13-Jul-2012 16:47:55.00
Jul 13 2012 05:05:08:977PM1120713031Steve Wukitch031 request: BT=5.5 T, Ip=1.2 MA, nl_04~0.7

result: plasma

next: EoR

Engineering Operator Comments
ShotTimeTypeStatusComment
109:02:41:290AMPlasmaOk
209:18:02:180AMPlasmaOk
309:32:17:090AMPlasmaOk
409:47:06:470AMPlasmaOk
510:01:44:193AMPlasmaOk
610:15:32:430AMPlasmaOk
710:31:32:243AMPlasmaOk
810:46:51:097AMPlasmaOk
911:00:04:737AMPlasmaOk
1011:17:13:630AMPlasmaOk
1111:33:06:860AMPlasmaOk
1211:48:28:317AMPlasmaOk
1312:04:02:120PMPlasmaOk
1412:19:16:147PMPlasmaOk
1512:33:20:980PMPlasmaOk
1601:01:02:897PMPlasmaOk
1701:13:37:577PMPlasmaOk
1801:29:59:960PMPlasmaOk
1901:48:05:910PMPlasmaOk
2002:04:37:893PMPlasmaOk
2102:21:51:720PMPlasmaOk
2202:37:09:243PMPlasmaOk
2302:53:31:280PMPlasmaOk
2403:14:59:040PMPlasmaOk
2503:30:13:200PMPlasmaOk
2603:45:27:970PMPlasmaOk
2704:00:44:847PMPlasmaOk
2804:13:04:190PMPlasmaOk
2904:25:31:793PMPlasmaOk
3004:40:23:897PMPlasmaOk
3104:54:51:920PMPlasmaOk

System Availability
Jul 13 2012 09:02:04:763AM
SystemAvailableCommentAvailability
Changed
OwnerDescriptionWho Can
Change
Active MHDnosecured - tagged outJun 2 2008 11:03:58:433AM (sears)Joe SnipesActive MHD Antennagolfit
BESyesBES system is onlineNov 22 2011 02:21:12:050PM (bespam)Bill RowanBeam Emission Spectroscopybespam,liao,rowan
BolometersyesMidplane diodes functioning properly. Midplane bolometers working and calibrated. DIV bolometers installed but not yet toaster calibratedApr 20 2012 09:57:29:520AM (mlreinke)Matt ReinkeBolometershutch,mlreinke
Boronizationyes Jun 15 2012 05:02:46:313PM (dekow)Jim IrbyBoronizationdekow,irby
CECEyesThe system is currently operational for Te tilde measurement. Talk to Choongki about the current configuration Jul 3 2012 04:38:00:317PM (nthoward)Anne WhiteCorrelation ECEnthoward,sck83,whitea
CNPAyesMultiple channel CNPA available, no safety risk for in-vessel accessApr 14 2011 12:01:59:693PM (parker)Ron ParkerCompact Neutral Analyzerparker
Cryopump - Upper Divertoryes Jun 15 2012 05:02:31:550PM (dekow)Brian LaBombardUpper Divertor Cryopumpdekow,irby,labombard
CXRSyescore-CXRS system is onlineNov 22 2011 02:21:22:280PM (bespam)Bill RowanCharge Exchange Spectroscopybespam,blip,liao,rachmcd,rowan
CXRS edgeyesMichael CHurchill has primary responsibility at the momentApr 19 2011 11:44:46:247AM (blip)Bruce LipshultzMeasurement of CXR light in the pedestal region at both the high- and low-field sidesblip,rmchurch
D Alphayes\ha2_bright is available; \SPECTROSCOPY::TOP.VUV.VIS_SIGNALS:MCP_VIS_SIG1 is not availableJul 1 2009 09:45:41:090AM (terry)Jim TerryBalmer Alpha Monitorirby,terry,wolfe
Dalsanosystem is is installed and aligned, but not functional (appears to be a broken cable)Dec 5 2011 02:41:42:867PM (marmar)Earl MarmarVisible Bremsstrahlung Imagingmarmar
Disruption Mitigationyestwo gas jet valves active as of Feb 2012May 15 2012 10:09:23:597AM (granetz)Robert GranetzGas Jetgranetz,whyte
Divertor IRno Mar 6 2007 10:50:41:677AM Glen WurdenDivertor IR Digital Videogwurden,terry
Divertor IR Spectroscopyno Mar 6 2007 10:51:39:897AM Glen WurdenDivertor IR Spectroscopygwurden,terry
DMBolo AXUV diodesyesDiodes are taking usable data. Not all post-processing code is working yet.Feb 1 2012 01:24:23:953PM (golynyk)Geoff OlynykSet of six AXUV diodes in a toroidal array of midplane wall boxes.golynyk,granetz,mlreinke,whyte
DNByes"The beam could break at any moment."May 15 2012 10:09:52:470AM (granetz)Robert GranetzDiagnostic Neutral Beamdterry,granetz,mochung
ECDCyes Apr 26 2012 03:23:19:057PM (dekow)Jim Irby2.45 GHz, 3 kW, discharge cleaning systemdekow,irby,pfeiffer
FRC-ECEyesFRC-ECE is onlineMay 14 2012 11:53:01:693AM (bespam)Perry PhillipsHeterodyne ECE-32 channelsbespam,liao,phillips,rowan,whitea
FTCIyesSystem OperationalMay 14 2012 11:50:45:590AM (irby)Jim IrbyFast two-color interferometerirby
G-Side RatiomaticyesInstalled April 25,2012. New controller installed 5/29/2012Jun 7 2012 10:40:00:957AM (toland)Brian LaBombardG-side ratiomatic ionization gaugelabombard,toland
Glow DischargenoHV cables disconnected and power supplies off. Electrical plugs have been disconnected, capped and red tagged.Mar 5 2012 10:21:53:460AM (dekow)Jim Irby1 kV, 5 A, glow discharge systemdekow,dterry,irby
GPCyesOperationalApr 27 2012 07:41:46:907AM (hubbard)Amanda HubbardECE Polychromaterhubbard
GPC2yesOperationalApr 27 2012 07:42:03:317AM (hubbard)Amanda HubbardECE Polychromaterhubbard
GPIyesThe Xpt-view, the midplane-view cameras are operational. The innerwall GPI (coupled to the fast-diodes) is available. Jul 1 2009 09:45:50:933AM (terry)Jim TerryGas Puff Imagingterry,zweben
H/Dyessystem is functional and taking dataDec 5 2011 02:42:29:857PM (marmar)Earl MarmarH/D Ratiomarmar
HEATyes Apr 26 2012 03:23:49:607PM (dekow)Gary Dekow - Machine Heaters -burke,dekow
Hirex JryesHirex-Jr has been installedJun 28 2010 03:36:33:420PM (rice)John RiceHigh Resolution X-Rayince,rice
Hirex SryesInstalled and aligned. Will be available for Ti/Vr profiles after focusing tests and locked modes are taken.Dec 6 2011 08:21:02:453AM (ypodpaly)John RiceHigh Resolution X-Raycgao,ldelgado,rice,ypodpaly
HXRyes32 Channels operational,, no safety risk for in-vessel accessApr 14 2011 12:05:24:810PM (parker)Ron ParkerHard X-Ray Arrayfaust,parker,schmidt
ICRF D-Antennayes May 31 2012 09:20:06:827AM (wukitch)Steve WukitchD-port antennawukitch,ylin
ICRF E-Antennayes May 31 2012 09:19:57:640AM (wukitch)Steve WukitchE-port antennawukitch,ylin
ICRF J-Antennayes May 31 2012 09:19:47:443AM (wukitch)Steve WukitchJ-port antennawukitch,ylin
Impurity SpectroscopyyesBeing upgraded with better optics and new spectrographs. Dan Miller has primary responsibility.Apr 19 2011 11:46:02:193AM (blip)Bruce LipshultzMeasurement of recycling light and impurity source rates at multiple surfaces around the tokamakblip,miller
Laser Blow-OffyesPumped Down, Laser has not yet been tested but otherwise operationalMay 14 2012 04:31:17:037PM (nthoward)Martin GreenwaldImpurity Injection Systemg,nthoward
Lower HybridyesLH is now available for plasma operation up to ~900 kW net power.Jul 3 2012 02:50:00:693PM (wallaceg)Ron ParkerLower Hybriddterry,parker,wallaceg
Lower Hybrid ReflectometernooffApr 15 2011 08:24:27:930AM (dominguez)Arturo DominguezLower Hybrid Reflectometerdominguez,marmar,parker,sgbaek
LoWEUSyesLoWEUS viewing the 10-30 nm region, spectral brightness vs. lambda and time are being stored in tree.Apr 20 2012 10:43:34:077AM (mlreinke)Matthew L. Reinke Long Wavelength Extreme Ultraviolet Spectrometermarkchil,mlreinke
LPInoBeam line removedMay 30 2008 02:09:12:833PM (bose)Earl MarmarLithium Pellet Injectorbose,marmar
Ly-alphanoMidplane Lyman-a not functioning. New B-PORT Lyman (BPLY) still being debugged.Jul 12 2012 08:52:28:233AM (mlreinke)Matt ReinkeLyman alpha camerasfaustian,labombard,mlreinke
Magneticsyes Dec 1 2011 11:51:51:970AM (g)Robert GranetzBp coils and flux loops for equilibrium controlgranetz,wolfe
McPhersonnoMcPherson under vacuum but is not run on a day-to-day basis. Can be requested if desired. LoWEUS has taken over as the primary Mo monitor.Jul 12 2012 08:53:14:937AM (mlreinke)Jim TerryVUV Spectrometermarkchil,mlreinke,terry
MichelsonyesVacuum 3-4e-8 T. Starting with Michelson at reduced speed.Apr 27 2012 07:42:41:960AM (hubbard)Amanda HubbardECE Te Profileshubbard,schmidt
MKSyes Dec 2 2011 12:27:47:163PM (toland)Brian LaBombardBaratron pressure gaugeslabombard,toland
MLPyesOperational. Connected to A-port probe systemMay 10 2012 08:40:19:910AM (labombard)Brian LaBombardMirror Langmuir Probe Electronics Systemlabombard
MSEyes2/29/2012 MSE operational. No HV or vacuum safety issuesFeb 29 2012 12:26:13:863PM (sscott)Steve ScottMotional Stark Effectjinseok,sscott
NeutronsyesVoltage is on for He3 detectors on J port. Remaining voltages will be turned on for the first run.Apr 23 2012 09:31:22:063AM (fiore)Catherine FioreNeutron Detectorsfiore
Neuts and HardsyesAll detectors Powered On --- Waiting for neutrons for calibrationNov 22 2011 01:05:24:380PM (irby)Jim IrbyX-Ray/Neutron Detectors at K-Horirby
NINJAyesC-bottom and new F-bottom system ready.Dec 2 2011 12:28:44:843PM (toland)Brian LaBombardNINJA gas pufflabombard,terry,toland
PCIyesOperational.Jul 10 2012 07:08:06:883PM (ntsujii)Miklos PorkolabPhase Contrast Imagingemd,ennever,ntsujii,porkolab
Penning GaugesyesHV power supplies turned ON in INIT, off in RECOOLMay 10 2012 08:41:03:000AM (labombard)Brian LaBombardPenning Ionization Gaugeslabombard
Plasma TVyesWIDE1, WIDE2 (chan 33), DANT, JANT and DIV are operational.Jul 1 2009 09:46:29:543AM (terry)Jim TerryVideo of plasma via several camerasdekow,irby,terry,wolfe
Polarimeteryes3 chords operational but with high noise levelJan 6 2012 04:22:20:903PM (irby)Jim IrbyC-Mod Polarimeterirby
Power - Alternator Air Switchyes Apr 26 2012 03:24:21:607PM (dekow)Gary DekowAlternator to Power Room Power Supply Connectioncochran,dekow,dterry,irby
Power - PEIyes Apr 26 2012 03:24:41:250PM (dekow)Gary DekowPEI Systemcochran,dekow,dterry,irby
Power - TMXyes Apr 26 2012 03:24:57:153PM (dekow)Gary DekowEf2s,. EFCs and A-Coilsbyford,cochran,dekow,dterry,irby
Power Systemsyes Apr 26 2012 03:25:14:497PM (dekow)Jim IrbyC-Mod Magnet Suppliesbyford,cochran,dekow,dterry,irby
Probe Array - ISDyesOperational. Some dead probes.May 10 2012 08:41:58:120AM (labombard)Brian LabombardInner Lower Divertor Probe Arraylabombard
Probe Array - LHyesOperational. 4 out of 6 probes working.May 10 2012 08:41:40:557AM (labombard)Brian LaBombardLower Hybrid Probe Arraylabombard
Probe Array - OSDyesOperational.May 10 2012 08:42:13:733AM (labombard)Brian LaBombardOuter Lower Divertor Probe Array (F and J)labombard
Probe Array - UDIVyesOperational. Some dead probes.May 10 2012 08:42:32:663AM (labombard)Brian LaBombardUpper Divertor Probe Arraylabombard
ReflectometeryesOn 1120608, the high frequency channels: 112, 140 and the variable, have been disconnected for some troubleshooting. All other channels are connectedJun 14 2012 11:28:59:603AM (dominguez)Earl MarmarReflectometerdominguez,marmar
Scanning Probe - ASPyesOperational. A variety of probe heads are ready for use.May 10 2012 08:43:10:937AM (labombard)Brian LaBombardA-Port Scanning Probelabombard
Scanning Probe - FSPyesOperational.May 10 2012 08:43:24:887AM (labombard)Brian LaBombardF-Port Scanning Probelabombard
Scanning Probe - WASPnoNot functioning. Probe tips are melted. Repair not performed during break.May 10 2012 08:44:43:137AM (labombard)Brian LaBombardInner Wall Scanning Probelabombard,nsmick
Shoelace AntennayesOperationalMay 10 2012 08:45:08:320AM (labombard)Brian LaBombardHigh-k active MHD antenna, for QCM, WCM studiesgolfit,labombard
SOL reflectometeryesc-port (top, middle, bottom) and h-port available. Only 1 of 4 locations can be used for each dischargeMay 1 2012 04:54:58:820PM (cornwall)Cornwall LauSOL reflectometercornwall,wukitch,ylin
SparkeryesSparker Power Supply powered up. Connected at K port using red cable 4/23/12 9:25AMApr 23 2012 12:06:10:983PM (parkin)Jim IrbyField Emission Preionization for C-Moddekow,irby,parkin
Surface Science StationyesSSS is under vacuum and fully available.Jul 3 2012 02:46:59:753PM (ochoukov)Bruce LipschultzRadially scanning probe located on K-portblip,ochoukov
TCIyesTCI lasers in operation May 14 2012 11:51:18:700AM (irby)Jim IrbyTwo-Color Interferometerirby,murray
TS - CoreyesOperating with one 50Hz laser, precise density calibration still required.May 9 2012 03:12:32:050PM (jwhughes)Jerry HughesCore Thomson scatteringjrwalk,jwhughes,yma
TS - EdgeyesOperating with one 50Hz laser, precise density calibration still required.May 9 2012 03:12:51:363PM (jwhughes)Jerry HughesMillimeter resolution edge Thomson scatteringjrwalk,jwhughes,yma
Vispecno350 and 670 nm, 4 spatial channelsNov 28 2007 09:58:35:493AM (agraf)Alex GrafVisible Spectrometeragraf
XEUSyesXEUS viewing the 1-6 nm region, spectral brightness vs. lambda and time are being stored in tree.Apr 20 2012 10:43:43:107AM (mlreinke)Matt ReinkeX-ray Extended Ultraviolet Spectrometermarkchil,mlreinke
XTOMOyesARRAY1->5 available. Specific channels on various arrays display issues.Apr 20 2012 05:36:28:523PM (faustian)Robert GranetzX-Ray Tomographyfaustian,granetz,mlreinke