Alcator C-Mod Run 1100811 Information

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Miniproposals
Miniproposal:570
Date Filed: 8/21/2009
Title:Boundary layer heat transport experiments in L-mode plasmas
First Author:Brian Labombard
Session Leader:Brian Labombard (shots 1-20)

Operators
Session leader(s):Brian Labombard
Physics operator(s):Robert Granetz
Engineering operator(s):Gary Dekow,Ed Fitzgerald,Bill Byford

Engineering Operator Run Comment
MP#570 - Boundary layer heat transport experiments in L-mode plasmas

Session Leader Plans
Entered: Aug 10 2010 12:15:11:347PM
Author: Brian Labombard
Run Plan for 1100811

MP#570 - Boundary layer heat transport experiments in L-mode plasmas

Goal
8 tesla discharges today
We will target the 8 tesla data sets as outlined in the MP, performing density scans at 0.8 MA and 1.2 MA.

Setup
Reload shot#1100803007, with request for NL04 ~ 0.3. This shot had the desired strike point sweep on the outer divertor, with all gaps tuned up nicely, including a ramp of the outer gap for the ASP. We will adjust gap programming as needed. Program toroidal field to 8 tesla.

NINJA should be filled to 10 PSI He for GPI. Program gas to hit plasma at 1.2 s.
IR camera on and aligned.
Set ASP, FSP and WASP scanning probes to fire at 0.8, 1.0 and 1.2 seconds
Argon will be enabled for HIREX data at the same puff parameters as on 1100721.
Cryopump with be used from the start.
Helium ECDC for 1 hr prior to run.
No ICRF or LHRF.

A. LSN, 8 tesla, 0.8 MA
NL04~ 0.4, 0.55, 0.7, 0.85,1.0e20
Two shots at each density, probes scanning to resolve shear layer.

B. LSN, 8 tesla, 1.2 MA
NL04~ 0.6, 0.8, 1.0, 1.2, 1.4e20
Two shots at each density, probes scanning to resolve shear layer.

Physics Operators Plans
Entered: Aug 10 2010 03:59:08:860PM
Author: Robert Granetz

Engineering setup for Wednesday 2010/08/11

MP570 - Boundary layer heat transport experiments in L-mode plasmas

Session leader: B. LaBombard
Physics operator: R. Granetz
Asst PO: G. Wallace (scapegoat)

Overnight: no boronization.  Note non-standard ECDC:
  ECDC in D2 and 60 C bake for most of the night, but switch to
  ECDC in helium (5e-5 torr) for an hour before the run.

Run will start at 09:00 and end at 17:00.

Power systems as on 1100803007 (Ip=0.8 MA, 4.0 T, 0.4e20 m-2, LSN, cryopump)

NOTE: alternator RPM will have to be increased to ~1715 for this 8 tesla run.
NOTE: PLC limits on TF will have to be increased to be consistent with 224 kA.

A-coil configuration: +Dtop -Dbot -Jtop +Jbot; Hybrid enabled (standard
configuration)

Gas Setup:
   fill B-Top            with  6 psi D2  Hybrid enabled  (PG4)
   fill B-side lower     with  1 psi Ar  Hybrid enabled  (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 He  

Enable the following gate valves and shutters, assuming no vacuum problems:
  ECE, VUV, Z-bolo, HIREX-Sr, B-spectrometer GV
 
Torvac setup: keep gate valves open during PULSE

Specific diagnostics: divertor IR camera

------------------------------------------------------------------------------
Boronization: no overnight; no between-shot
Impurity injector: no
ICRF Setup: no
LH Setup: no
DNB: no
Cryopump: YES
------------------------------------------------------------------------------

Run plan: This will be an 8 tesla run, so I've loaded seg 1 from seg 1 of
          1100319018 (the most recent 7.8 T shot).  Changes: increase
          TF_current to 224 kA to get 8.0 T; set pre-fill pulse to 55 ms
          (cryopump startup).

          Load seg 2 from seg 2 of 1100803007.
          Changes: load TF_current waveform from seg 2 of 1100319018, then
            increase to 224 kA; start Ip rampdown at t=1.3 s (which is
            consistent with the TF programmed rampdown starting at 1.25 s)

          Alternator RPM will have to be increased to ~1715.
          PLC limits on TF will have to be increase to allow 224 kA


Session Leader Summaries
Entered: Aug 11 2010 10:13:08:207PM
Author: Brian Labombard
Run Summary for 1100811

MP#570 -- "Boundary layer heat transport experiments in L-mode plasmas"

It was a successful run day for MP#570. We managed to complete two density scans at 7.9 tesla toroidal field, one at 0.8 MA and one at 1.2 MA. Although we did not obtain the top-end densities that were called out in the run plan (target values: 1.0e20 @ 0.8 MA and 1.4e20 @ 1.2 MA), we got close enough to see the roll-over of the divertor conditions to a high-recycling regime where the divertor heatflux footprint begins to be affected (achieved values: 0.94e20 @ 0.8 MA and 1.2e20 @ 1.2 MA).

The IR camera was operated on most shots, but Jim Terry reported numerous cases where the camera dropped large blocks of frames (unrecoverable) or the software had trouble with saturated frames or stabilization problems (recoverable?). Apparently, the large toroidal field (~8 tesla) caused the periscope to swing with higher amplitude than usual, testing the limits of the stabilization algorithm.

Gas-puff imaging (diodes and phantom camera) was routinely performed with good data being reported.

We ran all shots with the strike-point programmed sweep up the divertor plate such that the embedded probes could sample the footprints with high resolution.

The run got off to a slow start, with two test shots dedicated to getting a pulsed-gas value conditioned plus a delay while blockage to an LN2 feed line for the cryopump could be resolved. Shot# 5 was the first 8 tesla shot, which ended in a TF crowbar and some blown fuses. Reducing the TF pulse length to limit temperature rises in the power supply fixed the problem. We cranked out a perfect string of 8 tesla shots after that time, with the exception of shot#8 which was a locked-mode reference shot (5.4 tesla) for Matt Reinke.

Shots 5 through 13 (except 8) were performed at 0.8 MA with increasing density. ASP, FSP and WASP scanning probes were successfully operated to map out the 'upstream' conditions in detail. We carefully monitored the heat flux profiles on the outer divertor as reported from embedded Langmuir probes and surface thermocouple sensors. In the sheath-limited regime, the profiles reported by these two separate measures agreed. An e-folding length of 2.8 mm in the common zone was a typical value. As the divertor transitioned into the high recycling regime (NL04 ~ 0.8), two things happened: (1) heat flux profiles from the LPs and TCs started to disagree, with the LPs reporting higher heat fluxes that the TCs, and (2) e-folding lengths by both measures got longer. It is clear from the thermal sensor data (surface TCs, tile TCs, calorimeters) that the LP data is not to be trusted for heat flux analysis in this regime; the LP-inferred heat flux simply does not arrive on the plate. We saw this same behavior play out previously in 5.4 tesla shots at 0.55, 0.8 and 1.04 MA at a similar densities normalized to the Greenwald density, so it is a very robust result.

Shots 14 through 20 were done a 1.2 MA. Running out of wall clock time, we had to rush through the density scan, taking only one shot instead of the usual 2 at each density point, with an elevated anxiety level about the fate of the scanning probes. Fortunately, the scanning probe targeting was adequately maintained, if not optimal -- at least we didn't toast anything. A similar behavior was found with regard to the divertor footprints recorded by the surface TCs and the Langmuir probes, but now with the power e-folding length in the common zone being ~ 2.2 mm at the 1.2 MA conditions.

Phys-Op Bob Granetz (with Greg Wallace as assistant) did an excellent job today. Many thanks to the entire operations staff for running the final shot after 5:00 pm -- a bad habit that this session leader will have to break.

Having more or less completed the 8 tesla data set, our plan is to let MP#570 lie fallow for a while to digest the results and to focus our attention back on EDA H-modes again (MP#591).

Shot Log:

1 -no power test

2 -no power test

3 -LSN, 6.0T, 0.8 MA, NL04~0.44, no probes scanning
Prad_main ~ 0.13MW with argon puff

4 -no power shot

5 -LSN, 7.9T, 0.8 MA, NL04~0.47, ASP(+3), FSP(-15.0), WASP(12.7,13.2,13) @ 0.8, 1.0, 1.2s
Prad_main ~ 0.1MW with argon puff

6 -LSN, 7.9T, 0.8 MA, NL04~0.47, ASP(+8), FSP(-10.0), WASP(15, 15, 15) @ 0.8, 1.0, 1.2s
Prad_main ~ 0.1MW with argon puff
ASP, FSP data ok.
IR periscope is moving more on these high field shots, causing stabilization
WASP electrodes have boron on them - reporting high Te values.

7 -LSN, 7.9T, 0.8 MA, NL04~0.47, ASP(+8), FSP(-10.0), WASP(17, 17, 17) @ 0.8, 1.0, 1.2s
Prad_main ~ 0.1MW with argon puff

8 -locked mode shot for Matt

9 -LSN, 7.9T, 0.8 MA, NL04~0.62, ASP(+8), FSP(-10.0), WASP(16.5, 17, 18.5) @ 0.8, 1.0, 1.2s
Prad_main ~ 0.13MW with argon puff
ASP,FSP, WASP data look ok.

10 -LSN, 7.9T, 0.8 MA, NL04~0.6, ASP(+8), FSP(-10.0), WASP(16.5, 17, 18.5) @ 0.8, 1.0, 1.2s
Prad_main ~ 0.11MW with argon puff
ASP,FSP, WASP data look ok
IR camera had timing problem on this shot.

11-LSN, 7.9T, 0.8 MA, NL04~0.77, ASP(+7.5), FSP(-10.0), WASP(16.5, 17, 18.5) @ 0.8, 1.0, 1.
Prad_main ~ 0.19 MW with argon puff
ASP,FSP, WASP data look ok.

12-LSN, 7.9T, 0.8 MA, NL04~0.7, ASP(+7.5), FSP(-10.0), WASP(16.5, 17, 18.5) @ 0.8, 1.0, 1.
Prad_main ~ 0.15 MW with argon puff
ASP,FSP, WASP data ok

13-LSN, 7.9T, 0.8 MA, NL04~0.94, ASP(+7.5), FSP(-10.0), WASP(16.5, 17, 18.5) @ 0.8, 1.0, 1.
Prad_main ~ 0.33 MW with argon puff
ASP,FSP, WASP data ok

Next: go to 1.2 MA

14-LSN, 7.9T, 1.2 MA, NL04~0.65 no probes scanning
Prad_main ~ 0.15 MW with argon puff

15-LSN, 7.9T, 1.2 MA, NL04~0.57, ASP(+5), FSP(-15.0), WASP(14.5, 15, 16.5) @ 0.8, 1.0, 1.2s
Prad_main ~ 0.15 MW with argon puff

16-LSN, 7.9T, 1.2 MA, NL04~0.6, ASP(+6), FSP(-11.0), WASP(16, 17.5, 18) @ 0.8, 1.0, 1.2s
Prad_main ~ 0.18 MW with argon puff

17-LSN, 7.9T, 1.2 MA, NL04~0.79, ASP(+6.5), FSP(-11.0), WASP(16.5, 18, 18.5) @ 0.8, 1.0, 1.2s
Prad_main ~ 0.14 MW with argon puff

18-LSN, 7.9T, 1.2 MA, NL04~0.94, ASP(+6.5), FSP(-11.0), WASP(16.5, 18, 18.5) @ 0.8, 1.0, 1.2s
Prad_main ~ 0.2 MW with argon puff

19-LSN, 7.9T, 1.2 MA, NL04~ wiggly 1.28 down to 1.1, ASP(+7.5), FSP(-11.0), WASP(16.5, 18, 18.5) @ 0.8, 1.0, 1.2s
Prad_main ~ 0.33 MW with argon puff

20-LSN, 7.9T, 1.2 MA, NL04~wiggly 1.2 down to 1, ASP(+7.5), FSP(-11.0), WASP(16, 17, 18) @ 0.8, 1.0, 1.2s
Prad_main ~ 0.14 MW with argon puff

Physics Operator Summaries
Entered: Aug 11 2010 04:54:35:517PM
Author: Robert Granetz

Run summary for Wednesday 2010/08/11

MP570 - Boundary layer heat transport experiments in L-mode plasmas

Session leader: B. LaBombard
Physics operator: R. Granetz

This run was all at 8 tesla (except the first plasma shot, 1100811003,
which was done at 6 T to make sure all the TF instrumentation was working
properly).  This required reloading the startup and PLC settings from the
most recent high-field run last March.  We ran two different plasma
currents, 0.8 MA and 1.2 MA, and a range of densities at each current.  The
tokamak ran very well at 8 T and both currents.  The only problem was on
shot 5, the first 8 T shot, on which some of the TF SCR's tripped their
overtemperature limit, resulting in a TF crowbar and two blown fuses.  I
worked around that problem by shortening the TF pulse by 200 ms, by
starting the TF later.  Everything went like clockwork after that.  In
order to keep the magnet temperature from rising much, we stayed in RECOOL
for 20 minutes to begin with, but eventually had to extend that by a few
extra minutes.

Scorecard: 17 plasmas (no early shutdowns)
            0 duds
            0 fizzles
            0 power supply tests
            3 no-power MDS shot cycles
           --------------
   Total:  20 shot cycles

Entered: Aug 12 2010 09:00:59:117AM
Author: Ron Parker
Loaded shot 1100804001 for initial plasma. Since cryo was not on for that shot, but will be for shot 1 today.

Session Leader Comments
Aug 11 2010 10:38:00:363AM1100811003Brian Labombard3 -LSN, 6.0T, 0.8 MA, NL04~0.44, no probes scanning
Prad_main ~ 0.13MW with argon puff
Aug 11 2010 10:38:13:953AM1100811005Brian Labombard5 -LSN, 7.9T, 0.8 MA, NL04~0.47, ASP(+3), FSP(-15.0), WASP(12.7,13.2,13) @ 0.8, 1.0, 1.2s
Prad_main ~ 0.1MW with argon puff
Aug 11 2010 11:17:35:250AM1100811006Brian Labombard6 -LSN, 7.9T, 0.8 MA, NL04~0.47, ASP(+8), FSP(-10.0), WASP(15, 15, 15) @ 0.8, 1.0, 1.2s
Prad_main ~ 0.1MW with argon puff
ASP, FSP data ok.
IR periscope is moving more on these high field shots, causing stabilization program to fail.
WASP electrodes have boron on them - reporting high Te values.
Aug 11 2010 11:53:26:383AM1100811007Brian Labombard7 -LSN, 7.9T, 0.8 MA, NL04~0.47, ASP(+8), FSP(-10.0), WASP(17, 17, 17) @ 0.8, 1.0, 1.2s
ASP, FSP ok. WASP is better. Still high Te on first scan.
Prad_main ~ 0.1MW with argon puff
Aug 11 2010 12:14:10:750PM1100811009Brian Labombard9 -LSN, 7.9T, 0.8 MA, NL04~0.62, ASP(+8), FSP(-10.0), WASP(16, 17, 18) @ 0.8, 1.0, 1.2s
Prad_main ~ 0.13MW with argon puff
ASP,FSP, WASP data look ok
Aug 11 2010 12:53:14:227PM1100811010Brian Labombard10 -LSN, 7.9T, 0.8 MA, NL04~0.6, ASP(+8), FSP(-10.0), WASP(16.5, 17, 18.5) @ 0.8, 1.0, 1.2s
Prad_main ~ 0.11 MW with argon puff
ASP,FSP, WASP data look ok
IR camera had timing problem on this shot.
Aug 11 2010 01:46:04:190PM1100811011Brian Labombard11-LSN, 7.9T, 0.8 MA, NL04~0.77, ASP(+7.5), FSP(-10.0), WASP(16.5, 17, 18.5) @ 0.8, 1.0, 1.
Prad_main ~ 0.19 MW with argon puff
ASP,FSP, WASP data look ok
Aug 11 2010 01:46:17:870PM1100811012Brian Labombard12-LSN, 7.9T, 0.8 MA, NL04~0.7, ASP(+7.5), FSP(-10.0), WASP(16.5, 17, 18.5) @ 0.8, 1.0, 1.
Prad_main ~ 0.15 MW with argon puff
ASP,FSP, WASP data ok
Aug 11 2010 02:34:17:530PM1100811013Brian Labombard13-LSN, 7.9T, 0.8 MA, NL04~0.94, ASP(+7.5), FSP(-10.0), WASP(16.5, 17, 18.5) @ 0.8, 1.0, 1.
Prad_main ~ 0.33 MW with argon puff
ASP,FSP, WASP data ok
Aug 11 2010 02:34:31:050PM1100811014Brian Labombard14-LSN, 7.9T, 1.2 MA, NL04~0.65 no probes scanning
Prad_main ~ 0.15 MW with argon puf
Aug 11 2010 04:01:00:073PM1100811016Brian Labombard16-LSN, 7.9T, 1.2 MA, NL04~0.6, ASP(+6), FSP(-11.0), WASP(16, 17.5, 18) @ 0.8, 1.0, 1.2s
Prad_main ~ 0.18 MW with argon puff
Aug 11 2010 04:01:36:027PM1100811017Brian Labombard17-LSN, 7.9T, 1.2 MA, NL04~0.79, ASP(+6.5), FSP(-11.0), WASP(16.5, 18, 18.5) @ 0.8, 1.0, 1.2s
Prad_main ~ 0.14 MW with argon puff
Aug 11 2010 04:42:30:070PM1100811018Brian Labombard18-LSN, 7.9T, 1.2 MA, NL04~0.94, ASP(+6.5), FSP(-11.0), WASP(16.5, 18, 18.5) @ 0.8, 1.0, 1.2s
Prad_main ~ 0.19 MW with argon puff

Physics Operator Comments
Aug 11 2010 09:42:02:937AM1100811001Robert Granetz
Shot 01 -- No-power cycle and gas test.  Got the pre-fill, but nothing from the main fueling valve.
           The F-side ratiomatic pressure gauge is working again.

Next shot: try another no-power gas test shot to unstick the valve

Aug 11 2010 09:40:59:297AM1100811002Robert Granetz
Shot 02 -- No-power gas valve test.  This time the B-main valve actually opened.

Next shot: Go for plasma, but at Jim Irby's suggestion, I have reduced Btor to 6 T for
           this first plasma shot, just to check that all TF diagnostics are working.

Aug 11 2010 09:39:23:617AM1100811003Robert Granetz
Shot 03 -- Plasma, full length.  0.8 MA, 6.0 T, 0.4e20 m-2, LSN, cryopump.
           The TF rampdown starts at t=1.25 s, as programmed, and the Ip
           rampdown starts at t=1.30 s, as programmed.

TF instrumentation is all working properly.

Next shot: go for 8 tesla plasma

Aug 11 2010 09:56:44:200AM1100811004Robert Granetz
Shot 04 -- No-power shot cycle because the cryopump was not ready.

Cell access to check on cryopump LN2 line

Next shot: 8 T plasma; I've tweaked RCUR programming to adjust outer gap, at the SL's request.

Aug 11 2010 10:56:29:157AM1100811005Robert Granetz
Shot 05 -- Plasma, full length.  TF crowbarred due to SCR overtemperature.  TF gets to flattop
           around t=0.4 s.  0.8 MA, 7.9 T, 0.4-0.5e20 m-2, LSN, cryopump.  Outer gap evolution
           is not quite what JT wants.

Long delay to change TF fuses.

Next shot: start TF 200 ms later (PLC set to -1.3 s instead of -1.5 s) to shorten TF flattop
           at the beginning end; tweak RCUR programming some more

Aug 11 2010 11:17:40:167AM1100811006Robert Granetz
Shot 06 -- Plasma, full length.  No TF overtemps.  0.8 MA, 7.9 T, 0.4-0.5e20 m-2, LSN, cryopump.  Outer
           gap evolution is improving.  

Next shot: a bit more tweaking of RCUR to tailor the outer gap scan around end-of-flattop;
           add -0.3 mT to BR_0

Aug 11 2010 11:29:44:500AM1100811007Robert Granetz
Shot 07 -- Plasma, full length.  0.8 MA, 7.9 T, 0.4-0.5e20 m-2, LSN, cryopump.  Good outer gap
           evolution.

Next shot: load locked-mode shot 1100721006 so Matt can calibrate HIREX rotation; also load
           the corresponding engineering PLC timings

Aug 11 2010 11:50:03:193AM1100811008Robert Granetz
Shot 08 -- Plasma, locked-mode calibration shot, disrupted at t=1.58 s; locked at t=0.71 s.
           0.8 MA, 5.4 T, 0.4e20 m-2, LSN, cryopump.

Next shot: reload the previous 8 tesla shot, 1100811007, along with the engineering PLC timings;
           change nl_04 to 0.55e20 m-2

Aug 11 2010 12:06:18:843PM1100811009Robert Granetz
Shot 09 -- Plasma, full length.  0.8 MA, 7.9 T, 0.6e20 m-2, LSN, cryopump.

Next shot: repeat, no changes

Aug 11 2010 12:33:17:953PM1100811010Robert Granetz
Shot 10 -- Plasma, full length.  0.8 MA, 7.9 T, 0.6e20 m-2, LSN, cryopump; startup is degrading again

Next shot: increase nl_04 to 0.7e20 m-2; add -0.2 mT to BR_0 (offset is now 0.0000 T)

Aug 11 2010 12:46:53:923PM1100811010Robert Granetz
I've noticed that the TF is not getting to flattop until t=0.7 s now (shots 7, 9, 10), whereas it
reached flattop by t=0.6 s on shot 6).  So the TF magnet must be heating up.  Jim Irby is checking
this.

Aug 11 2010 01:07:19:513PM1100811011Robert Granetz
Shot 11 -- Plasma, full length.  0.8 MA, 7.9 T, 0.8e20m-2, LSN, cryopump

Next shot: tweak nl_04 to 0.65e20 m-2

Aug 11 2010 01:38:28:007PM1100811012Robert Granetz
Shot 12 -- Plasma, full length.  0.8 MA, 7.9 T, 0.7e20 m-2, LSN, cryopump

Next shot: set nl_04 to 0.85e20 m-2; increase argon pulse to 60 ms (was 50 ms)

Aug 11 2010 02:00:18:617PM1100811013Robert Granetz
Shot 13 -- Plasma, nearly full length.  0.8 MA, 7.9 T, 0.95e20 m-2, LSN, cryopump

Next shot: set Ip to 1.2 MA; set nl_04 to 0.5e20m-2

Aug 11 2010 02:32:06:127PM1100811014Robert Granetz
Shot 14 -- Plasma, full length.  1.2 MA, 7.9 T  !!!  0.6e20 m-2, LSN, cryopump

Next shot: add -10 A to IC_EF4

Aug 11 2010 02:55:37:573PM1100811015Robert Granetz
Shot 15 -- Plasma, full length.  1.2 MA, 7.9 T, 0.5-0.6e20 m-2, LSN, cryopump

Next shot: repeat, no changes

Aug 11 2010 03:30:08:873PM1100811016Robert Granetz
Shot 16 -- Plasma, full length.  1.2 MA, 7.9 T, 0.6e20 m-2, LSN, cryopump

Next shot: set nl_04 to 0.7e20 m-2

Aug 11 2010 03:55:44:663PM1100811017Robert Granetz
Shot 17 -- Plasma, full length.  1.2 MA, 7.9 T, 0.8e20 m-2, LSN, cryopump

Next shot: set nl_04 to 0.9e20 m-2

Aug 11 2010 04:28:05:403PM1100811018Robert Granetz
Shot 18 -- Plasma, nearly full length.  1.2 MA, 7.9 T, 0.95e20 m-2, LSN, cryopump

Next shot: set nl_04 to 1.15e20 m-2

Aug 11 2010 04:53:52:903PM1100811019Robert Granetz
Shot 19 -- Plasma, nearly full length.  1.2 MA, 7.9 T, 1.1-1.3e20 m-2, LSN, cryopump

Next shot: tweak nl_04 to try getting a constant 1.1e20 m-2.  This will be the last shot.

Engineering Operator Comments
ShotTimeTypeStatusComment
108:58:06:790AMTestBadb Main piezo did open, repeat gas test
209:14:09:660AMTestOkGas Valve Worked
309:28:12:510AMPlasmaOk
409:41:43:317AMPlasmaBadNo Power Cryo not ready
510:18:38:910AMPlasmaOk
611:01:21:673AMPlasmaOk
711:20:42:857AMPlasmaOk
811:44:50:927AMPlasmaOk
912:00:40:883PMPlasmaOk
1012:25:35:567PMPlasmaOk
1112:53:29:963PMPlasmaOk
1201:19:46:190PMPlasmaOk
1301:46:53:910PMPlasmaOk
1402:14:09:747PMPlasmaOk
1502:44:27:543PMPlasmaOk
1603:17:48:080PMPlasmaOk
1703:45:39:563PMPlasmaOk
1804:13:34:517PMPlasmaOk
1904:41:40:450PMPlasmaOk
2005:09:38:637PMPlasmaOk

System Availability
Aug 11 2010 08:57:49:293AM
SystemAvailableCommentAvailability
Changed
OwnerDescriptionWho Can
Change
Active MHDnosecured - tagged outJun 02 2008 11:03AM (sears)Joe SnipesActive MHD Antennasears,snipes
BESnoBES system is ready for Up-to-air (Apr, 2010)Mar 31 2010 10:36AM (bespam)Bill RowanBeam Emission Spectroscopybespam,liao,rowan
Bolometersyes2pi (D+F) working. All midplane and off-midplane diode arrays working except WB1AX. Midplane foils calibrated and PRAD_MAIN is being filled. Divertor/Ledge foils not yet ready.Jul 15 2010 08:27AM (mlreinke)Matt ReinkeBolometershutch,mlreinke
Boronizationno3/26/10 Bottle Removed From Cell, monitors powered down, Autodialer function bypassedMar 26 2010 05:29PM (dekow)Jim IrbyBoronizationdekow,irby
CNPAnoSingle channel CNPA available as of 12/1707Jun 10 2009 10:22AM (twf)Ron ParkerCompact Neutral Analyzerparker
Cryopump - Upper DivertornoShut down. Helium dewar removed. LN2 manual valve and solenoid valves are closed and tagged.Apr 06 2010 10:51AM (labombard)Brian LaBombardUpper Divertor Cryopumpirby,labombard
CXRSnoWide-view CXRS system is power down and ready for up-to-air (Apr, 2010)Mar 31 2010 10:36AM (bespam)Bill RowanCharge Exchange Spectroscopybespam,blip,liao,rachmcd,rowan
D Alphayes\ha2_bright is available; \SPECTROSCOPY::TOP.VUV.VIS_SIGNALS:MCP_VIS_SIG1 is not availableJul 01 2009 09:45AM (terry)Jim TerryBalmer Alpha Monitorirby,terry,wolfe
Dalsayessystem is aligned; new calibrations (relative brightness and position) not yet implementedJun 29 2010 10:27AM (marmar)Earl MarmarVisible Bremsstrahlungmarmar
Disruption Mitigationyesoperational, but turned offNov 03 2009 04:59PM (granetz)Robert GranetzGas Jetgranetz,whyte
Divertor IRno Mar 06 2007 10:50AM Glen WurdenDivertor IR Digital Videogwurden,terry
Divertor IR Spectroscopyno Mar 06 2007 10:51AM Glen WurdenDivertor IR Spectroscopygwurden,terry
DNBnoin test mode onlyNov 03 2009 05:01PM (granetz)Robert GranetzDiagnostic Neutral Beamdterry,granetz,gung
ECDCyesOperationalJun 26 2010 09:28PM (irby)Jim Irby2.45 GHz, 3 kW, discharge cleaning systemdekow,irby,pfeiffer
FRC-ECEyesAll channels working and calibrated.Jul 30 2010 08:13AM (phillips)Perry PhillipsHeterodyne ECE-32 channelsphillips
G-Side RatiomaticyesGauges are operational.Jun 28 2010 08:02PM (labombard)Brian LaBombardG-side ratiomatic ionization gaugelabombard,toland
Glow DischargenoPlugs for Power Supply and Controls have been unplugged and red tagged making system safe for In-Vessel Access.Apr 05 2010 11:18AM (dekow)Jim Irby1 kV, 5 A, glow discharge systemdekow,dterry,irby
GPCyesOperational.Jul 28 2009 04:23PM (hubbard)Amanda HubbardECE Polychromaterhubbard,schmidt
GPC2yesMost channels operational. Ch 5 preamp replaced 6/18.Jun 22 2010 03:03PM (hubbard)Amanda HubbardECE Polychromaterhubbard,schmidt
GPIyesThe 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 TerryGas Puff Imagingterry,zweben
H/Dyesoperating normallyJun 29 2010 10:26AM (marmar)Earl MarmarH/D Ratiomarmar
HEATyes Jun 26 2010 11:19PM (dekow)Gary Dekow - Machine Heaters -burke,dekow
Hirex JryesHirex-Jr has been installedJun 28 2010 03:36PM (rice)John RiceHigh Resolution X-Rayince,rice
Hirex SryesSystem installed and aligned. Inverted profiles are still not available.Jul 22 2010 08:41AM (ypodpaly)John RiceHigh Resolution X-Rayince,rice,ypodpaly
HXRyes Jun 28 2010 12:12PM (schmidt)Ron ParkerHard X-Ray Arrayparker,schmidt
ICRF D-Antennayessystem checked out ok on 11006728. Jun 28 2010 04:57PM (ylin)Steve WukitchD-port antennawukitch,ylin
ICRF E-Antennayessystem checked out ok on 1100628Jun 28 2010 04:57PM (ylin)Steve WukitchE-port antennawukitch,ylin
ICRF J-Antennayessystem checked out ok. conditioned to vacuum. Jun 28 2010 04:58PM (ylin)Steve WukitchJ-port antennawukitch,ylin
Laser Blow-Offyesoperational and testedJul 20 2010 04:42PM (g)Martin GreenwaldImpurity Injection Systemg,nthoward
Lower HybridyesLH was tested into dummy loads synced to shot. Shorts have been removed. Probe Cal. 6/29/10 evening.Jun 29 2010 03:51PM (dterry)Ron ParkerLower Hybriddterry,parker,wallaceg
Lower Hybrid Reflectometeryes60 GHz system to detect upshifted signalJul 28 2010 01:39PM (sgbaek)Arturo DominguezLower Hybrid Reflectometerdominguez,marmar,parker,sgbaek
LPInoBeam line removedMay 30 2008 02:09PM (bose)Earl MarmarLithium Pellet Injectorbose,marmar
Ly-alphayesLYMID, WB4LY and LLY working. WB1LY not attached due to pickup problems.Jul 01 2010 11:58AM (mlreinke)Matt ReinkeLyman alpha cameraslabombard,mlreinke
McPhersonyesSpectra being collected and tree filled. Wavelength scan is broken so fixed on the Mo XXXI and XXXII lines.Jul 15 2010 08:28AM (mlreinke)Jim TerryVUV Spectrometermlreinke,terry
MichelsonyesOperational. Start at reduced speed.Jun 22 2010 03:02PM (hubbard)Amanda HubbardECE Te Profileshubbard,schmidt
MKSyesGauges are operationalJun 28 2010 08:02PM (labombard)Brian LaBombardBaratron pressure gaugeslabombard
MLPnoSystem 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 LaBombardMirror Langmuir Probe Electronics Systemlabombard
MSEnoAs of 6/10/09, MSE is calibrated & ready to go. Awaiting DNB.Jun 10 2009 10:34AM (sscott)Steve ScottMotional Stark Effectjinseok,sscott
NeutronsyesAll systems are on and functionalJun 29 2010 12:56PM (fiore)Catherine FioreNeutron Detectorsfiore
Neuts and HardsyesPMT Neuts_hards, ssd_x01, ssd_x02, ssd_x03Jun 26 2010 09:21PM (irby)Jim IrbyX-Ray/Neutron Detectors at K-Horirby
NINJAnoCapillaries tested in-vessel.Jun 28 2010 08:08PM (labombard)Brian LaBombardNINJA gas pufflabombard,terry
PCIyesOperational. AM (2 * 39.51) MHz.Jul 19 2010 05:54PM (ntsujii)Miklos PorkolabPhase Contrast Imagingarai,ennever,ntsujii,porkolab
Penning GaugesnoHigh voltage power supplies are turned off, waiting for work at A-port horizontal to be finished.Jun 28 2010 08:07PM (labombard)Brian LaBombardPenning Ionization Gaugeslabombard
Plasma TVyesWIDE1, WIDE2 (chan 33), DANT, JANT and DIV are operational.Jul 01 2009 09:46AM (terry)Jim TerryVideo of plasma via several camerasdekow,irby,terry,wolfe
PolarimeternoSafe for Machine EntrySep 14 2007 12:17PM (irby)Jim IrbyC-Mod Polarimeterirby
Power - Alternator Air Switchyes Jun 26 2010 11:19PM (dekow)Gary Dekowfeeds all the other suppliescochran,dekow,dterry,irby
Power - PEIyes Jun 26 2010 11:19PM (dekow)Gary DekowPEI Systemcochran,dekow,dterry,irby
Power - TMXyes Jun 26 2010 11:19PM (dekow)Gary DekowEf2s,. EFCs and A-Coilsbyford,cochran,dekow,dterry,irby
Power Systemsyes Jun 26 2010 11:20PM (dekow)Jim IrbyC-Mod Magnet Suppliesbyford,cochran,dekow,dterry,irby
Probe Array - ISDyesOperational.Jun 28 2010 08:03PM (labombard)Brian LabombardInner Lower Divertor Probe Arraylabombard
Probe Array - LHyesOperational.Jun 28 2010 08:03PM (labombard)Brian LaBombardLower Hybrid Probe Arraylabombard
Probe Array - OSDyesF and J outer divertor probes are operational.Jun 28 2010 08:04PM (labombard)Brian LaBombardOuter Lower Divertor Probe Arraylabombard
Probe Array - UDIVyesOperational, except probe#13Jun 28 2010 08:04PM (labombard)Brian LaBombardUpper Divertor Probe Arraylabombard
ReflectometeryesOn 1100811xxx the 50GHz channel has been reconnected with the original setup. The I/Q for the 50GHz is still in the previous setup (500kHz antialiasing).Aug 11 2010 08:33AM (dominguez)Earl MarmarReflectometerdominguez,marmar
Scanning Probe - ASPyesOperational. New Langmuir-Mach probe head installed.Jun 28 2010 08:05PM (labombard)Brian LaBombardA-Port Scanning Probelabombard
Scanning Probe - FSPyesOperational.Jun 28 2010 08:05PM (labombard)Brian LaBombardF-Port Scanning Probelabombard
Scanning Probe - WASPyesBoth A and K units are operational. Coil polarity needs to be checked.Jun 28 2010 08:06PM (labombard)Brian LaBombardInner Wall Scanning Probelabombard,nsmick
SparkeryesHV supply on, cable run to sparker at k-horJun 23 2010 02:41PM (irby)Jim IrbyField Emission Preionization for C-Moddekow,irby,parkin
Surface Science StationnoSSS installed and leak tested, individual probes not installedJun 28 2010 01:28PM (ochoukov)Bruce LipschultzRadially scanning probe located on K-portblip,ochoukov
TCIyesNo new CO2 detector, so still missing edge channelsJun 23 2010 02:40PM (irby)Jim IrbyTwo-Color Interferometerirby,murray
TS - CoreyesOperating with 2 lasers, but density is **uncalibrated**Jul 14 2010 11:54AM (jwhughes)Jerry HughesCore Thomson scatteringjwhughes,yma
TS - EdgeyesOperationalJul 14 2010 11:54AM (jwhughes)Jerry HughesMillimeter resolution edge Thomson scatteringjwhughes,yma
Vispecno350 and 670 nm, 4 spatial channelsNov 28 2007 09:58AM (agraf)Alex GrafVisible Spectrometeragraf
XEUSyesOperationalJul 01 2010 11:57AM (mlreinke)Matt ReinkeX-ray Extended Ultraviolet Spectrometermlreinke
XTOMOyesCore system working. Edge system waiting for H-modes.Jul 01 2010 11:55AM (mlreinke)Bob GranetzX-Ray Tomographygranetz,mlreinke

Aug 11 2010 09:45:18:110AM
digitizer #19: sweeping frequency, freq=81.3*volt+591
VCO setup: offset=6400mV, amplitude=0.8V, freq=10Hz

#20: reflected (75 GHz) detection, pow=21*volt-117,peak expected around at 1110 MHz of sweeping VCO
#21: relflected (60 GHz) detection, pow=21*volt-117,peak expected around at 1110 MHz of sweeping VCO

the splitters are connected so the fluctuation data available
S.A. avaiable for 50 GHz measurment for the reflected IF.

using S.A. in the morning
50: sig IF: 300.6 MHz: -20 dBm, ref IF: 300.6 MHz: -7.5dBm
60: sig IF: 1.099 GHz: -45 dBm, ref IF: 1.102 GHz: -15 dBm
75: sig IF: 1.0998 GHz: -65 dBm, ref IF: 1.0995 GHz: -20 dBm
88: sig IF: 445 MHz: -50 dBm, 556 MHz=-43dBm
112: sig IF: 2.01GHz: -39dBm
variable: sig IF: 303.5MHz: -12 dBm
140: sig IF: 793MHz: -49 dBm