Alcator C-Mod Run 1070330 Information

Miniproposals

Miniproposal: 464

Date Filed: 3/8/2007

Title: LHCD Coupling Optimization

First Author: Greg Wallace

Session Leader: Greg Wallace (shots 1-11)

Miniproposal: 473

Date Filed: 3/9/2007

Title: Lower Hybrid System Check-out and Initial operation

First Author: J. Randall Wilson

Session Leader: J. Randall Wilson (shots 12-18)

Session Leader: Greg Wallace (shots 19-23)

Operators
Session leader(s):	Greg Wallace,J. Randall Wilson,Greg Wallace
Physics operator(s):	Ron Parker
Engineering operator(s):	Ed Fitzgerald,Gary Dekow

Engineering Operator Run Comment
MP 473: Lower Hybrid Check-out and Initial Operation SL Wilson PO Parker

Session Leader Plans

Entered: Mar 29 2007 05:17:29:003PM

Author: J. Randall Wilson

Begin by completing mp 464 Lower hybrid couplin studies G Wallace

then continue mP 473 LH checkout and initial ops
These shots will concentrate on co conditioning at higher density.
vary phasing more than on 10/28
If ICRF at all available will check out possible interference

Entered: Mar 30 2007 09:45:12:293AM

Author: Greg Wallace

Continuation of yesterday's run. Complete density scan from yesterday with grill 2mm behind limiter (repeat shots 15,16,17,18), then turn things over to Randy for the afternoon.

Physics Operators Plans

Entered: Mar 29 2007 04:18:38:607PM

Author: Ron Parker

Engineering setup for Friday 30 March 2007

MP 473: Lower Hybrid Check-out and Initial Operation

Session leader: Wilson
Physics operator: Parker

ECDC overnight in D2, pressure=2e-4 Torr. Rmin/Rdwell/Rmax = 44/45/103 cm.
Bake at 60 C.

The run will start at 09:00 and end at 17:00.

Power systems as on 1070329012.

A-coil configuration: normal [Dtop -Dbot -Jtop +Jbot] and 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)
NINJA pumped out disabled

Enable the following gate valves and shutters: ECE, VUV, Z-bolo shutters

Torvac setup: Gate valves open during pulse.

-------------------------------------------------------------------------------
ICRF Setup: None

LH Setup: Plan to operate with power up to 2 MW
___________________________________

Start from shot 1070329012 as lower hybrid target.

Purpose of run is to begin process of bringing LH power and pulse length up to and ultimately exceeding levels achieved in the last run campaign. Some piggy backing in support of MP's 464, 467 and 468 will occur.

Session Leader Summaries

Entered: Mar 30 2007 06:23:13:870PM

Author: Greg Wallace

Started the run this morning to complete day 1 of lower hybrid coupling studies. Completed density scans with grill 2mm and 1.5mm behind LH limiter. Got reflection coef down to 11-12% at 90 degree phasing using plasma shape from 1070329018 but with grill 1.5mm behind limiter. This is the best result we've gotten so far.

Switch to Randy's MP at shot 12 and increased net power up to 550kW. Reflection coeffecients started low early in pulse but would rise to ~15% by the end of the pulse. Two interesting phenomena of note:
Bright lines are seen across the LH grill while power is on. These are clearly from LH since they disappear when LH system trips out.
Oscillations are observed in the top and bottom reflection coef, but these oscillations are out of phase such that the total refco stays constant. Interestingly the top and bottom LH langmuir probe densities oscillate with the same period but in phase with each other.

Several fizzles late in the day but still got good data. Tried to run ICRF and LH concurrently on last shot but was thwarted by a fizzle.

Physics Operator Summaries

Entered: Mar 30 2007 04:40:13:153PM

Author: Ron Parker

Shot 20 ran with LH power ramping from 450 - 900 kW at FINTs.

Entered: Mar 30 2007 04:41:12:543PM

Author: Ron Parker

Shot 21 fizzled -- effect of last LH pulse?

Entered: Mar 30 2007 05:06:18:667PM

Author: Ron Parker

The run was somewhat laborious with a slow start and a few delays.

The first problem was the discovery during a magnetics test that the OH1 current did not track the PLC programmed value. This was traced to a software problem, but resulted in a delay of 2.5 hours. The first 3 shots were used for PLC control tests and the first plasma shot was shot 4. Shots 4-13 ran well, with the exception of one fizzle blamed on the firing of the NB into gas between shots (?). These shots produced useful data for Greg's miniproposal on optimizing LH coupling as a function of grill position and density. On shot 13 a TF fuse blew and had to be replaced resulting in ~ 1 hour delay (including 50 kA test shot). Beginning with shot 16, the rest of the run was devoted to bringing up the LH power and pulse length. Om shot 17 ,the plasma disrupted near the end of the LH pulse (~ 900 kW at FINTs) and 2 subsequent pulses fizzled. Finally a full length shot was obtained on shot 20, with the LH ramping from ~ 450 kW to 0.9 MW over 400 ms at the FINT's. Shot 21 fizzled, possibly due to residual effect of last LH shot? Shot 22 ran well with LH power ramping from 500 to 1000+ kW over 400 ms, but shot 23, the last shot of the run predictably fizzled.

Session Leader Comments

Mar 30 2007 11:30:29:670AM 1070330004 Greg Wallace CPS was enabled and all segments tripped. Will disable CPS system and retry the same shot again. Disruption occured during rampdown. Otherwise plasma looked good with nl_04 3.5e19 m^-2 and density on top LH probes of about 2e17 and 4e17 on lower probes.

Mar 30 2007 12:23:15:950PM 1070330005 Greg Wallace Phase shifters set for 90deg current drive. Six segment pulse (10 ms @ 25% duty cycle), phasing at 60, 90, 120 repeated twice during shot.

Repeat of shot 15 from yesterday with launcher at 2mm behind limiter.

Reflection coef:
Phase
60 90 120
AB
30% 50% 75%
CD
16% 35% 55%

Density 1.5-2.5e17 on top LH probes, 3-4e17 on lower LH probes. nl_04 .32e20 m^-2.

Mar 30 2007 12:22:55:230PM 1070330006 Greg Wallace Phase shifters set for 90deg current drive. Six segment pulse (10 ms @ 25% duty cycle), phasing at 60, 90, 120 repeated twice during shot.

Repeat of shot 16 from yesterday with launcher at 2mm behind limiter.

Reflection coef:
Phase
60 90 120
AB
15% 27% 40%
CD
15% 22% 40%

Density 5-7e17 on top LH probes, 5-7e17 on lower LH probes. nl_04 .8e20 m^-2.

Mar 30 2007 12:28:05:497PM 1070330007 Greg Wallace Phase shifters set for 90deg current drive. Six segment pulse (10 ms @ 25% duty cycle), phasing at 60, 90, 120 repeated twice during shot.

Repeat of shot 17 from yesterday with launcher at 2mm behind limiter.

Reflection coef:
Phase
60 90 120
AB
14% 20% 30%
CD
15% 20% 30%

Density 1-1.5e18 on top LH probes, .9-1e18 on lower LH probes. nl_04 .8e20 m^-2.

Mar 30 2007 12:44:31:510PM 1070330008 Greg Wallace Phase shifters set for 90deg current drive. Six segment pulse (10 ms @ 25% duty cycle), phasing at 60, 90, 120 repeated twice during shot.

Repeat of shot 18 from yesterday with launcher at 2mm behind limiter.

Reflection coef:
Phase
60 90 120
AB
19% 12% 19%
CD
19% 12% 17%

Density 4-6e18 on top LH probes, 3-4.5e18 on lower LH probes. nl_04 1.05e20 m^-2.

Mar 30 2007 01:12:53:357PM 1070330009 Greg Wallace Phase shifters set for 90deg current drive. Six segment pulse (10 ms @ 25% duty cycle), phasing at 60, 90, 120 repeated twice during shot.

Repeat of shot 16 from yesterday with launcher at 1.5mm behind limiter.

Reflection coef:
Phase
60 90 120
AB
15% 25% 38%
CD
15% 20% 30%

Density 1e18 on top LH probes, .6-.8e18 on lower LH probes. nl_04 .8e20 m^-2.

Mar 30 2007 01:27:35:747PM 1070330010 Greg Wallace Phase shifters set for 90deg current drive. Six segment pulse (10 ms @ 25% duty cycle), phasing at 60, 90, 120 repeated twice during shot.

Repeat of shot 17 from yesterday with launcher at 1.5mm behind limiter.

Reflection coef:
Phase
60 90 120
AB
15% 15% 25%
CD
17% 15% 23%

Density 1.5-2.5e18 on top LH probes, 1-1.5e18 on lower LH probes. nl_04 .87e20 m^-2.

Mar 30 2007 01:43:20:700PM 1070330011 Greg Wallace Phase shifters set for 90deg current drive. Six segment pulse (10 ms @ 25% duty cycle), phasing at 60, 90, 120 repeated twice during shot.

Repeat of shot 18 from yesterday with launcher at 1.5mm behind limiter.

Reflection coef:
Phase
60 90 120
AB
21% 12% 17%
CD
22% 12% 16%

Density 7-10e18 on top LH probes, 5-6e18 on lower LH probes. nl_04 1.e20 m^-2.

Mar 30 2007 01:46:34:420PM 1070330012 J. Randall Wilson set up for 90 co steady long pulse
re-enable cps
use previous shot as reflection for 90 co was low (~0.11)

fizzle

Mar 30 2007 02:11:09:527PM 1070330013 J. Randall Wilson set up for 90 co steady long pulse (0.4 s)
re-enable cps
use previous shot as reflection for 90 co was low (~0.11)

good (0.25 MW)

Mar 30 2007 03:41:01:183PM 1070330016 J. Randall Wilson

good (0.39 MW)

Mar 30 2007 03:55:16:323PM 1070330017 J. Randall Wilson one arc early then inside arc late causing disruption

Plh= 0.5 MW

Mar 30 2007 04:00:07:497PM 1070330018 J. Randall Wilson disrupt before lh

Mar 30 2007 04:37:27:120PM 1070330020 Greg Wallace 90 degree current drive shot. One trip out at .87s, Interesting striations on WIDE2 video across grill are modulated with LH power. Density on LH probes of ~3-8e18 m^-3.

Reflection coef is around 15%. See same phenomenon as before on second half of shot. (Top and bottom refco osciliate out of phase by pi.)

Mar 30 2007 05:04:57:653PM 1070330022 Greg Wallace Clean shot up to 550 kW net power. Reflection coef around 12% rising to 16%. nl_04 1.08e20 m^-2 and LH probes near 6-8e18.

Physics Operator Comments

Mar 30 2007 09:07:26:920AM 1070330001 Ron Parker The first shot will be a PLC controlled 10 kA OH1 only, no commutation, to check yesterday's magnetics problem and subsequent fix.

Mar 30 2007 09:09:29:043AM 1070330001 Ron Parker We have set up the first plasma shot to reproduce 1070329015. The first few shots will be devoted to finish Greg's run from 1070329, which was aborted due to a problem with magnetics. Greg's shots will reproduce shots 15-18 from yesterday.

Mar 30 2007 09:31:38:090AM 1070330001 Ron Parker The first shot will be a PLC controlled 10 kA OH1 only, no commutation, to check yesterday's magnetics problem and subsequent fix.

Delay in getting going this AM due to data system problems and LH people in cell putting in battle shorts.

Mar 30 2007 10:21:45:840AM 1070330001 Ron Parker The test shot was successful as far as the magnetics were concerned, but did not hold OH1 current at 10 kA as set by the PLC. This problem is being trouble shot.

We'll try another test shot after the problem is fixed.

Mar 30 2007 10:27:42:467AM 1070330002 Ron Parker Shot 2 regulated at ~ 10 kA as programmed. A few magnetics errors came up, but may be due to low OH current.

Mar 30 2007 10:30:58:623AM 1070330002 Ron Parker Shot 3 should be a plasma shot.

Mar 30 2007 10:39:58:640AM 1070330003 Ron Parker Shot 3 didn't go because OH1 current was still limited at 10 kA.

Try again on next shot.

Mar 30 2007 10:49:34:150AM 1070330003 Ron Parker Short (hopefully) delay while Yuri and Joe trouble shoot the OH1 current programming problem.

Mar 30 2007 11:17:53:920AM 1070330003 Ron Parker Ready for a shot!

Mar 30 2007 11:42:04:920AM 1070330004 Ron Parker Shot 4 ran well, but disrupted in rampdown.

CPS shut LH off -- since LH is at low power, CPS will be disabled.

Mar 30 2007 11:56:36:683AM 1070330005 Ron Parker Shot 5 ran full length.

Next: Reproduce shot 1070329016

Mar 30 2007 12:15:36:230PM 1070330007 Ron Parker Shot 6 ran full length.

Next: reproduce shot 1070329017

Mar 30 2007 12:21:13:153PM 1070330007 Ron Parker Shot 7 ran full length.

Next: Reproduce shot 1070329018

Mar 30 2007 12:59:16:887PM 1070330008 Ron Parker Shot ran well, disrupting at 250 kA.

Next: Push grill in 0.5 mm to 1.5 mm behind LH limiter. Short cell access.

Mar 30 2007 01:07:54:857PM 1070330009 Ron Parker Shot 9 ran well.

Next: Reload shot 1070330007

Mar 30 2007 01:22:06:607PM 1070330010 Ron Parker Shot 10 ran full length.

Next: Repeat shot 8 (with grill 0.5 mm closer to LH limiter)

Mar 30 2007 01:42:19:747PM 1070330011 Ron Parker Shot 11 ran well, disrupting at 200 kA in rampdown.

Randy taking over from Greg. Next: 40 kW/klystron, 400 ms pulse.

Repeat shot 11.

Mar 30 2007 01:46:24:230PM 1070330012 Ron Parker Shot 12 fizzled, suspect between shot pulsing of beam into vacuum.

Mar 30 2007 02:25:20:823PM 1070330013 Ron Parker Shot 13 went, as did RF.

Next: LH power increased to 600 kW

Short delay to check fiber in power room.

Bad fuse in TF cabinet needs to be replaced. Short delay just became longer (+10 min).

Mar 30 2007 03:01:49:870PM 1070330013 Ron Parker Next shot will be a PLC controlled 50 kA TF test.

Mar 30 2007 03:08:59:980PM 1070330014 Ron Parker Fuse repaired, plasma shot coming up.

Mar 30 2007 03:20:35:653PM 1070330015 Ron Parker Shot 15 was a weak fizzle. No apparent reason, try again.

Mar 30 2007 03:45:26:403PM 1070330016 Ron Parker Shot 16 went through nicely, with LH power at ~700 kW at the FINT's and.

More LH power next shot.

Mar 30 2007 03:47:58:073PM 1070330017 Ron Parker Shot 17 ended in a disruption caused by LH

Mar 30 2007 03:59:35:997PM 1070330018 Ron Parker Disrupted again, well before LH (@0.45 s)

Mar 30 2007 04:13:59:683PM 1070330019 Ron Parker Shot 19 fizzled. Try again (LH power ramped from 450 - 900 kW over 400ms)

Mar 30 2007 04:58:57:387PM 1070330022 Ron Parker Shot 22 ran well, LH power ramped from 500 to 1000+ kW over 400 ms. It's possible to see a slight reduction in loop voltage, but this may be in the mind of the (or rather this) observer.

Engineering Operator Comments

Shot Time Type Status Comment

1 09:46:44:043AM Test Ok OH1 PLC test 1KV, 1,OO0 KA

2 10:21:45:937AM Test Ok OH1 PLC test 1KV, 1,000KA

3 10:32:09:037AM Plasma Bad OH1

4 11:22:33:980AM Plasma Ok

5 11:42:40:980AM Plasma Ok

6 12:02:42:027PM Plasma Ok

7 12:15:28:107PM Plasma Ok

8 12:28:00:920PM Plasma Ok

9 12:58:09:823PM Plasma Ok

10 01:14:30:793PM Plasma Ok

11 01:27:05:527PM Plasma Ok

12 01:43:08:667PM Plasma Ok

13 01:59:23:450PM Plasma Ok

14 03:03:37:213PM Test Ok TF Test

15 03:16:02:103PM Plasma Ok

16 03:29:17:950PM Plasma Ok

17 03:41:37:903PM Plasma Ok

18 03:54:23:480PM Plasma Ok

19 04:11:19:670PM Plasma Ok

20 04:24:32:387PM Plasma Ok

21 04:37:19:230PM Plasma Ok

22 04:49:55:090PM Plasma Ok

23 05:03:26:043PM Plasma Ok

24 09:04:17:777AM Test Bad

25 09:14:35:497AM Test Bad

26 09:24:05:277AM Test Bad

27 09:35:57:650AM Test Bad

System Availability

Mar 30 2007 09:46:22:373AM

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 no 2Pi diode operational, 2Pi foil has 180 Hz noise source. Preparing external amplifiers and DAQ. Midplane ready soon, 2D ready by start of science runs. Mar 27 2007 05:30PM (mlreinke) Matt Reinke Bolometers hutch,mlreinke
Boronization no Jan 14 2007 01:47PM Jim Irby Boronization dekow,irby
CNPA no Jan 14 2007 02:06PM Ron Parker Compact Neutral Analyzer parker
Cryopump - Upper Divertor no In-vessel hardware is installed; in-vessel cryogenic systems are leak-tight. Work is proceeding on external LHe and LN2 transfer lines as well as PLC control system. We will do the first LN2 cool-down tests manually. Mar 13 2007 09:55PM (labombard) Brian LaBombard Upper Divertor Cryopump irby,labombard
CXRS no The pedestal toroidal array was installed, spatially and absolutely calibrated. There are 10 chords intersects the beam at the range major_R=[75,4:87.4]cm. Spatial resolution: 1.2 cm. The F-top poloidal array was installed and spatially calibrated. There are 19 chords intersects the beam at the range major_R=[67.8:91.0]cm. Spacial resolution: 1.22 cm. Mar 06 2007 08:09PM (rowan) 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 calibrated and working expect for Ch 10 that has bad amp) Mar 28 2007 11:02AM (phillips) Perry Phillips Heterodyne ECE-32 channels phillips
G-Side Ratiomatic yes The gauge is operational. Cross-calibration with G-Side MKS gauge is needed. Mar 13 2007 10:02PM (labombard) Brian LaBombard G-side ratiomatic ionization gauge labombard,toland
GPC yes Chs 2-8 operational, but signals are low and noisy on SOME shots today. Mar 29 2007 01:41PM (hubbard) Amanda Hubbard ECE Polychromater hubbard,schmidt
GPC2 yes Most slow channels (except 1,8,10,17) operational. Set to lower freqs today for LH expts. Mar 29 2007 09:42AM (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 III no Jan 14 2007 01:53PM John Rice High Resolution X-Ray ince,rice
Hirex Jr yes Mar 06 2007 08:59AM (rice) 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 no Need to tune from 70 to 78 MHz. Loop not finished. Mar 16 2007 09:31AM (ylin) Steve Wukitch J-port antenna wukitch,ylin
Lower Hybrid yes System available for low power, short pulse testing into plasma Mar 28 2007 07:18AM (dterry) Ron Parker Lower Hybrid dterry,parker
LPI no available by 4/2 Mar 27 2007 04:44PM (bose) Earl Marmar Lithium Pellet Injector bose,marmar
Ly-alpha no Preparing external amplifiers and DAQ. Midplane ready soon, 2D ready by start of science runs. Mar 27 2007 05:30PM (mlreinke) Matt Reinke Lyman alpha cameras labombard,mlreinke
McPherson yes still a problem with the post shot script; this is being fixed by hand at present Mar 29 2007 11:45AM (terry) 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 Bench tests are proceeding on a prototype MLP system. We hope to roll the system into the cell for testing in a few weeks, powering up a single electrode on the A-port scanning probe. Mar 13 2007 09:57PM (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 Mar 29 2007 07:41PM (jinseok) Steve Scott Motional Stark Effect jinseok,sscott
Neutrons yes Calibrated detectors are positioned correctly; Voltage is on on the He3 bank; Remaining voltages will be turned on when plasma attempts start Mar 13 2007 08:23AM (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 no Jan 14 2007 02:03PM 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 no Mar 05 2007 05:34PM (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 no A-port and K-port WASPs were sucessfully scanned during recent TF only shots. A bit more control software needs to be written... Mar 15 2007 09:11PM (labombard) Brian LaBombard Inner Wall Scanning Probe labombard,nsmick
TCI yes NL04 at 71.04 cm from 3/9/07 calibration Mar 09 2007 05:47PM (irby) Jim Irby Two-Color Interferometer (TCI) irby,murray
TS - Core no DAQ timing interface not currently working; will try to resolve as soon as possible Mar 30 2007 01:36AM (jwhughes) Jerry Hughes Thomson Scattering - Core jwhughes
TS - Edge no Replacement filter has been reinstalled. Bench recalibration needed. Should be ready sometime during the week of April 2. Mar 26 2007 08:31AM (jwhughes) Jerry Hughes Thomson Scattering - Edge jwhughes
Vispec no Mar 29 2007 12:00PM Alex Graf Visible Spectrometer agraf

Mar 30 2007 11:22:11:653AM

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 no 2Pi diode operational, 2Pi foil has 180 Hz noise source. Preparing external amplifiers and DAQ. Midplane ready soon, 2D ready by start of science runs. Mar 27 2007 05:30PM (mlreinke) Matt Reinke Bolometers hutch,mlreinke
Boronization no Jan 14 2007 01:47PM Jim Irby Boronization dekow,irby
CNPA no Jan 14 2007 02:06PM Ron Parker Compact Neutral Analyzer parker
Cryopump - Upper Divertor no In-vessel hardware is installed; in-vessel cryogenic systems are leak-tight and have passed LN2 cool-down tests. Work is proceeding on external LHe and LN2 transfer lines as well as PLC control system. Mar 30 2007 10:53AM (labombard) Brian LaBombard Upper Divertor Cryopump irby,labombard
CXRS no The pedestal toroidal array was installed, spatially and absolutely calibrated. There are 10 chords intersects the beam at the range major_R=[75,4:87.4]cm. Spatial resolution: 1.2 cm. The F-top poloidal array was installed and spatially calibrated. There are 19 chords intersects the beam at the range major_R=[67.8:91.0]cm. Spacial resolution: 1.22 cm. Mar 06 2007 08:09PM (rowan) 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 calibrated and working expect for Ch 10 that has bad amp) Mar 28 2007 11:02AM (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 2-8 operational, but signals are low and noisy on SOME shots today. Mar 29 2007 01:41PM (hubbard) Amanda Hubbard ECE Polychromater hubbard,schmidt
GPC2 yes Most slow channels (except 1,8,10,17) operational. Set to lower freqs today for LH expts. Mar 29 2007 09:42AM (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 III no Jan 14 2007 01:53PM John Rice High Resolution X-Ray ince,rice
Hirex Jr yes Mar 06 2007 08:59AM (rice) 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 no Need to tune from 70 to 78 MHz. Loop not finished. Mar 16 2007 09:31AM (ylin) Steve Wukitch J-port antenna wukitch,ylin
Lower Hybrid yes System available for low power, short pulse testing into plasma Mar 28 2007 07:18AM (dterry) Ron Parker Lower Hybrid dterry,parker
LPI no available by 4/2 Mar 27 2007 04:44PM (bose) Earl Marmar Lithium Pellet Injector bose,marmar
Ly-alpha no Preparing external amplifiers and DAQ. Midplane ready soon, 2D ready by start of science runs. Mar 27 2007 05:30PM (mlreinke) Matt Reinke Lyman alpha cameras labombard,mlreinke
McPherson yes still a problem with the post shot script; this is being fixed by hand at present Mar 29 2007 11:45AM (terry) 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 Bench tests are proceeding on a prototype MLP system. We hope to roll the system into the cell for testing in a few weeks, powering up a single electrode on the A-port scanning probe. Mar 13 2007 09:57PM (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 Mar 29 2007 07:41PM (jinseok) Steve Scott Motional Stark Effect jinseok,sscott
Neutrons yes Calibrated detectors are positioned correctly; Voltage is on on the He3 bank; Remaining voltages will be turned on when plasma attempts start Mar 13 2007 08:23AM (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 no Jan 14 2007 02:03PM 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 no Mar 05 2007 05:34PM (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 no A-port and K-port WASPs were sucessfully scanned during recent TF only shots. A bit more control software needs to be written... Mar 15 2007 09:11PM (labombard) Brian LaBombard Inner Wall Scanning Probe labombard,nsmick
TCI yes NL04 at 71.04 cm from 3/9/07 calibration Mar 09 2007 05:47PM (irby) Jim Irby Two-Color Interferometer (TCI) irby,murray
TS - Core no DAQ timing interface not currently working; will try to resolve as soon as possible Mar 30 2007 01:36AM (jwhughes) Jerry Hughes Thomson Scattering - Core jwhughes
TS - Edge no Replacement filter has been reinstalled. Bench recalibration needed. Should be ready sometime during the week of April 2. Mar 26 2007 08:31AM (jwhughes) Jerry Hughes Thomson Scattering - Edge jwhughes
Vispec no Mar 29 2007 12:00PM Alex Graf Visible Spectrometer agraf

Session Leader Comments
Mar 30 2007 11:30:29:670AM	1070330004	Greg Wallace	CPS was enabled and all segments tripped. Will disable CPS system and retry the same shot again. Disruption occured during rampdown. Otherwise plasma looked good with nl_04 3.5e19 m^-2 and density on top LH probes of about 2e17 and 4e17 on lower probes.
Mar 30 2007 12:23:15:950PM	1070330005	Greg Wallace	Phase shifters set for 90deg current drive. Six segment pulse (10 ms @ 25% duty cycle), phasing at 60, 90, 120 repeated twice during shot. Repeat of shot 15 from yesterday with launcher at 2mm behind limiter. Reflection coef: Phase 60 90 120 AB 30% 50% 75% CD 16% 35% 55% Density 1.5-2.5e17 on top LH probes, 3-4e17 on lower LH probes. nl_04 .32e20 m^-2.
Mar 30 2007 12:22:55:230PM	1070330006	Greg Wallace	Phase shifters set for 90deg current drive. Six segment pulse (10 ms @ 25% duty cycle), phasing at 60, 90, 120 repeated twice during shot. Repeat of shot 16 from yesterday with launcher at 2mm behind limiter. Reflection coef: Phase 60 90 120 AB 15% 27% 40% CD 15% 22% 40% Density 5-7e17 on top LH probes, 5-7e17 on lower LH probes. nl_04 .8e20 m^-2.
Mar 30 2007 12:28:05:497PM	1070330007	Greg Wallace	Phase shifters set for 90deg current drive. Six segment pulse (10 ms @ 25% duty cycle), phasing at 60, 90, 120 repeated twice during shot. Repeat of shot 17 from yesterday with launcher at 2mm behind limiter. Reflection coef: Phase 60 90 120 AB 14% 20% 30% CD 15% 20% 30% Density 1-1.5e18 on top LH probes, .9-1e18 on lower LH probes. nl_04 .8e20 m^-2.
Mar 30 2007 12:44:31:510PM	1070330008	Greg Wallace	Phase shifters set for 90deg current drive. Six segment pulse (10 ms @ 25% duty cycle), phasing at 60, 90, 120 repeated twice during shot. Repeat of shot 18 from yesterday with launcher at 2mm behind limiter. Reflection coef: Phase 60 90 120 AB 19% 12% 19% CD 19% 12% 17% Density 4-6e18 on top LH probes, 3-4.5e18 on lower LH probes. nl_04 1.05e20 m^-2.
Mar 30 2007 01:12:53:357PM	1070330009	Greg Wallace	Phase shifters set for 90deg current drive. Six segment pulse (10 ms @ 25% duty cycle), phasing at 60, 90, 120 repeated twice during shot. Repeat of shot 16 from yesterday with launcher at 1.5mm behind limiter. Reflection coef: Phase 60 90 120 AB 15% 25% 38% CD 15% 20% 30% Density 1e18 on top LH probes, .6-.8e18 on lower LH probes. nl_04 .8e20 m^-2.
Mar 30 2007 01:27:35:747PM	1070330010	Greg Wallace	Phase shifters set for 90deg current drive. Six segment pulse (10 ms @ 25% duty cycle), phasing at 60, 90, 120 repeated twice during shot. Repeat of shot 17 from yesterday with launcher at 1.5mm behind limiter. Reflection coef: Phase 60 90 120 AB 15% 15% 25% CD 17% 15% 23% Density 1.5-2.5e18 on top LH probes, 1-1.5e18 on lower LH probes. nl_04 .87e20 m^-2.
Mar 30 2007 01:43:20:700PM	1070330011	Greg Wallace	Phase shifters set for 90deg current drive. Six segment pulse (10 ms @ 25% duty cycle), phasing at 60, 90, 120 repeated twice during shot. Repeat of shot 18 from yesterday with launcher at 1.5mm behind limiter. Reflection coef: Phase 60 90 120 AB 21% 12% 17% CD 22% 12% 16% Density 7-10e18 on top LH probes, 5-6e18 on lower LH probes. nl_04 1.e20 m^-2.
Mar 30 2007 01:46:34:420PM	1070330012	J. Randall Wilson	set up for 90 co steady long pulse re-enable cps use previous shot as reflection for 90 co was low (~0.11) fizzle
Mar 30 2007 02:11:09:527PM	1070330013	J. Randall Wilson	set up for 90 co steady long pulse (0.4 s) re-enable cps use previous shot as reflection for 90 co was low (~0.11) good (0.25 MW)
Mar 30 2007 03:41:01:183PM	1070330016	J. Randall Wilson	good (0.39 MW)
Mar 30 2007 03:55:16:323PM	1070330017	J. Randall Wilson	one arc early then inside arc late causing disruption Plh= 0.5 MW
Mar 30 2007 04:00:07:497PM	1070330018	J. Randall Wilson	disrupt before lh
Mar 30 2007 04:37:27:120PM	1070330020	Greg Wallace	90 degree current drive shot. One trip out at .87s, Interesting striations on WIDE2 video across grill are modulated with LH power. Density on LH probes of ~3-8e18 m^-3. Reflection coef is around 15%. See same phenomenon as before on second half of shot. (Top and bottom refco osciliate out of phase by pi.)
Mar 30 2007 05:04:57:653PM	1070330022	Greg Wallace	Clean shot up to 550 kW net power. Reflection coef around 12% rising to 16%. nl_04 1.08e20 m^-2 and LH probes near 6-8e18.

Physics Operator Comments
Mar 30 2007 09:07:26:920AM	1070330001	Ron Parker	The first shot will be a PLC controlled 10 kA OH1 only, no commutation, to check yesterday's magnetics problem and subsequent fix.
Mar 30 2007 09:09:29:043AM	1070330001	Ron Parker	We have set up the first plasma shot to reproduce 1070329015. The first few shots will be devoted to finish Greg's run from 1070329, which was aborted due to a problem with magnetics. Greg's shots will reproduce shots 15-18 from yesterday.
Mar 30 2007 09:31:38:090AM	1070330001	Ron Parker	The first shot will be a PLC controlled 10 kA OH1 only, no commutation, to check yesterday's magnetics problem and subsequent fix. Delay in getting going this AM due to data system problems and LH people in cell putting in battle shorts.
Mar 30 2007 10:21:45:840AM	1070330001	Ron Parker	The test shot was successful as far as the magnetics were concerned, but did not hold OH1 current at 10 kA as set by the PLC. This problem is being trouble shot. We'll try another test shot after the problem is fixed.
Mar 30 2007 10:27:42:467AM	1070330002	Ron Parker	Shot 2 regulated at ~ 10 kA as programmed. A few magnetics errors came up, but may be due to low OH current.
Mar 30 2007 10:30:58:623AM	1070330002	Ron Parker	Shot 3 should be a plasma shot.
Mar 30 2007 10:39:58:640AM	1070330003	Ron Parker	Shot 3 didn't go because OH1 current was still limited at 10 kA. Try again on next shot.
Mar 30 2007 10:49:34:150AM	1070330003	Ron Parker	Short (hopefully) delay while Yuri and Joe trouble shoot the OH1 current programming problem.
Mar 30 2007 11:17:53:920AM	1070330003	Ron Parker	Ready for a shot!
Mar 30 2007 11:42:04:920AM	1070330004	Ron Parker	Shot 4 ran well, but disrupted in rampdown. CPS shut LH off -- since LH is at low power, CPS will be disabled.
Mar 30 2007 11:56:36:683AM	1070330005	Ron Parker	Shot 5 ran full length. Next: Reproduce shot 1070329016
Mar 30 2007 12:15:36:230PM	1070330007	Ron Parker	Shot 6 ran full length. Next: reproduce shot 1070329017
Mar 30 2007 12:21:13:153PM	1070330007	Ron Parker	Shot 7 ran full length. Next: Reproduce shot 1070329018
Mar 30 2007 12:59:16:887PM	1070330008	Ron Parker	Shot ran well, disrupting at 250 kA. Next: Push grill in 0.5 mm to 1.5 mm behind LH limiter. Short cell access.
Mar 30 2007 01:07:54:857PM	1070330009	Ron Parker	Shot 9 ran well. Next: Reload shot 1070330007
Mar 30 2007 01:22:06:607PM	1070330010	Ron Parker	Shot 10 ran full length. Next: Repeat shot 8 (with grill 0.5 mm closer to LH limiter)
Mar 30 2007 01:42:19:747PM	1070330011	Ron Parker	Shot 11 ran well, disrupting at 200 kA in rampdown. Randy taking over from Greg. Next: 40 kW/klystron, 400 ms pulse. Repeat shot 11.
Mar 30 2007 01:46:24:230PM	1070330012	Ron Parker	Shot 12 fizzled, suspect between shot pulsing of beam into vacuum.
Mar 30 2007 02:25:20:823PM	1070330013	Ron Parker	Shot 13 went, as did RF. Next: LH power increased to 600 kW Short delay to check fiber in power room. Bad fuse in TF cabinet needs to be replaced. Short delay just became longer (+10 min).
Mar 30 2007 03:01:49:870PM	1070330013	Ron Parker	Next shot will be a PLC controlled 50 kA TF test.
Mar 30 2007 03:08:59:980PM	1070330014	Ron Parker	Fuse repaired, plasma shot coming up.
Mar 30 2007 03:20:35:653PM	1070330015	Ron Parker	Shot 15 was a weak fizzle. No apparent reason, try again.
Mar 30 2007 03:45:26:403PM	1070330016	Ron Parker	Shot 16 went through nicely, with LH power at ~700 kW at the FINT's and. More LH power next shot.
Mar 30 2007 03:47:58:073PM	1070330017	Ron Parker	Shot 17 ended in a disruption caused by LH
Mar 30 2007 03:59:35:997PM	1070330018	Ron Parker	Disrupted again, well before LH (@0.45 s)
Mar 30 2007 04:13:59:683PM	1070330019	Ron Parker	Shot 19 fizzled. Try again (LH power ramped from 450 - 900 kW over 400ms)
Mar 30 2007 04:58:57:387PM	1070330022	Ron Parker	Shot 22 ran well, LH power ramped from 500 to 1000+ kW over 400 ms. It's possible to see a slight reduction in loop voltage, but this may be in the mind of the (or rather this) observer.

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	09:46:44:043AM	Test	Ok	OH1 PLC test 1KV, 1,OO0 KA
2	10:21:45:937AM	Test	Ok	OH1 PLC test 1KV, 1,000KA
3	10:32:09:037AM	Plasma	Bad	OH1
4	11:22:33:980AM	Plasma	Ok
5	11:42:40:980AM	Plasma	Ok
6	12:02:42:027PM	Plasma	Ok
7	12:15:28:107PM	Plasma	Ok
8	12:28:00:920PM	Plasma	Ok
9	12:58:09:823PM	Plasma	Ok
10	01:14:30:793PM	Plasma	Ok
11	01:27:05:527PM	Plasma	Ok
12	01:43:08:667PM	Plasma	Ok
13	01:59:23:450PM	Plasma	Ok
14	03:03:37:213PM	Test	Ok	TF Test
15	03:16:02:103PM	Plasma	Ok
16	03:29:17:950PM	Plasma	Ok
17	03:41:37:903PM	Plasma	Ok
18	03:54:23:480PM	Plasma	Ok
19	04:11:19:670PM	Plasma	Ok
20	04:24:32:387PM	Plasma	Ok
21	04:37:19:230PM	Plasma	Ok
22	04:49:55:090PM	Plasma	Ok
23	05:03:26:043PM	Plasma	Ok
24	09:04:17:777AM	Test	Bad
25	09:14:35:497AM	Test	Bad
26	09:24:05:277AM	Test	Bad
27	09:35:57:650AM	Test	Bad