Alcator C-Mod Run 1111123 Information

Miniproposals

Operators
Session leader(s):
Physics operator(s):	Greg Wallace
Engineering operator(s):	Andy Pfeiffer,Sam Pierson,Ed Fitzgerald

Engineering Operator Run Comment
FY12 Plasma Startup (MP298a) PO: Wallace

Session Leader Plans

Physics Operators Plans

Entered: Nov 22 2011 04:30:29:223PM

Author: Greg Wallace

Physop Plan for Wednesday, 23-Nov-2011

FY12 Plasma Startup (MP298a)

PO: Wallace

-----------------
Engineering Setup
-----------------

Run begins at 9:00 and ends at 17:00

Power systems as on: 1111122029

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 H-bot with 15psi D2 Hybrid DISABLED (PG5)
DO NOT fill B-div, Hybrid DISABLED (PG6)
DO NOT fill H-div, Hybrid DISABLED (PG7)
fill NINJA with 10 psi D2 DISABLED

Gate-valves and shutters: Enable ECE

Check with the physop before opening other diagnostic gate-valves or shutters.

Torvac gatevalve toggle (yes/no): no

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

Vessel temperature: 35/35/35

------------------------------
ECDC Parameters
------------------------------
gas and pressure: D2 at 2e-4 Torr
sweep: 44/45/103 cm
scan: 20/120 s

====================================
Physics Operator Plans:

Start from Tuesday's best plasma attempt (1111122029, 700 kA, nl_04=5e19). Tune the startup until we get current rise. If successful, consider slowly increasing density and plasma current.

We will want to keep an eye on the magnetics, including BP16_JK, which had a problem on Friday and was zapped prior to shot 32.

Depending on success and reproducibility, we may consider between-shot ECDC.

Session Leader Summaries

Physics Operator Summaries

Entered: Nov 23 2011 05:17:49:773PM

Author: Greg Wallace

Physop Summary for 1111123

PO: Wallace
SL: None

Dirty plasmas and fizzles today. Shot 8 had the strongest plasma of the day but was aborted due to runaway electrons. All other plasmas had impurity issues which caused the current ramp to stall and the plasma to disrupt. 10min of ECDC between shots 15 and 16 may have helped, but not significantly.

Played around a bit with RCUR and ZCUR programming to keep plasma limited on the inner wall during the current ramp. This may have helped delay the onset of impurity production, but it's hard to say.

One dud caused by failure of the TF power supplies. 33 shots total with 15 plasmas, 1 dud, 17 fizzles.

Session Leader Comments

Physics Operator Comments

Nov 29 2011 08:08:36:410AM Bill Rowan loaded 1111129032 as planned.
prefill remains at 20 ms.
ECDC over the weekend.

Nov 23 2011 09:30:28:390AM 1111123001 Greg Wallace Changes:
First shot of the day.

Result:
Disruption at ~0.11 s, 250 kA. Lots of runaways.

Next shot:
Increase early PG3 puff from 12ms to 17ms.
Get rid of early negative ZCUR programming. ZCUR now set to 0 for t<0.1s.

Nov 23 2011 09:42:58:580AM 1111123002 Greg Wallace Changes:
Increase early PG3 puff from 12ms to 17ms.
Get rid of early negative ZCUR programming. ZCUR now set to 0 for t<0.1s.

Result:
Post disruption fizzle.

Next shot:
Repeat.

Nov 23 2011 10:05:20:463AM 1111123003 Greg Wallace Changes:
Repeat of shot 2.

Result:
Disruption at ~0.07s.

Next shot:
Repeat.

Nov 23 2011 10:26:19:493AM 1111123004 Greg Wallace Changes:
Repeat of shot 3.

Result:
Disruption at ~0.08s, 150 kA. Not many runaways. Plasma is still dirty.

Next shot:
Repeat.

Nov 23 2011 10:34:41:000AM 1111123005 Greg Wallace Changes:
Repeat of shot 4.

Result:
Still lots of carbon. Disruption at 0.095s 150 kA.

Next shot:
Turn off PG3 gas puff after 9ms.

Nov 23 2011 10:46:34:677AM 1111123006 Greg Wallace Changes:
Turn off PG3 gas puff after 9ms.

Result:
Plasma made it to 12ms and 30kA. Looks like a bounce?

Next shot:
Repeat.

Nov 23 2011 10:59:56:077AM 1111123007 Greg Wallace Changes:
Repeat of shot 6.

Result:
Fizzle. Bouncy again. Lasted until 19 ms at 30 kA.

Next shot:
Increase RCUR offset from 2000 to 2750. (Was at 3500 yesterday and reduced to 2000.)

Nov 23 2011 11:14:52:480AM 1111123008 Greg Wallace Changes:
Increase RCUR offset from 2000 to 2750. (Was at 3500 yesterday and reduced to 2000.)

Result:
Disruption at 0.15 s and 500 kA. Shut down by DPCS_XJUMP. Otherwise looks pretty good.

Next shot:
Increase RCUR offset from 2750 to 3500. Increase early PG4 puff from 17ms to 20ms.

Nov 23 2011 11:24:03:097AM 1111123009 Greg Wallace Changes:
Increase RCUR offset from 2750 to 3500. Increase early PG4 puff from 17ms to 20ms.

Result:
Fizzle.

Next shot:
Repeat.

Nov 23 2011 11:39:59:677AM 1111123010 Greg Wallace Changes:
Repeat of shot 9.

Result:
Fizzle.

Next shot:
Repeat.

Nov 23 2011 11:59:03:283AM 1111123011 Greg Wallace Changes:
Repeat of shot 10.

Result:
Fizzle.

Next shot:
Repeat.

Nov 23 2011 12:07:33:387PM 1111123012 Greg Wallace Changes:
Repeat of shot 11.

Result:
Fizzle.

Next shot:
Repeat.

Nov 23 2011 12:19:49:747PM 1111123013 Greg Wallace Changes:
Repeat of shot 12.

Result:
Fizzle. Still dirty.

Next shot:
Repeat.

Nov 23 2011 12:28:38:600PM 1111123014 Greg Wallace Changes:
Repeat of shot 13.

Result:
Dud. No TF.

Next shot:
Repeat.

Nov 23 2011 01:07:10:413PM 1111123015 Greg Wallace Changes:
Repeat of shot 13.

Result:
Fizzle.

Next shot:
ECDC for 10 min then repeat of shot 15.

Nov 23 2011 01:24:41:370PM 1111123016 Greg Wallace Changes:
ECDC for 10 min then repeat of shot 15.

Result:
Fizzle. Carbon back down a little, H-alpha way up (frosted detector that has thawed out???). Looks similar to shot 8 up to 10 ms.

Next shot:
Repeat of shot 16.

Nov 23 2011 01:39:44:417PM 1111123017 Greg Wallace Changes:
Repeat of shot 16.

Result:
Disruption at 0.14s, 200 kA. Still dirty.

Next shot:
Repeat of shot 17.

Nov 23 2011 01:51:47:720PM 1111123018 Greg Wallace Changes:
Repeat of shot 17.

Result:
Disruption at 0.16s. Current reached 300kA before turning over. Current rise slower than in shot 8. Still looking dirty.

Next shot:
Repeat of shot 18.

Nov 23 2011 02:02:31:620PM 1111123019 Greg Wallace Changes:
Repeat of shot 18.

Result:
Fizzle.

Next shot:
Repeat of shot 19.

Nov 23 2011 02:19:46:543PM 1111123020 Greg Wallace Changes:
Repeat of shot 19.

Result:
Disruption at 0.13s, ~300 kA.

Next shot:
Repeat of shot 20.

Nov 23 2011 02:31:11:633PM 1111123021 Greg Wallace Changes:
Repeat of shot 20.

Result:
Fizzle.

Next shot:
Repeat of shot 21.

Nov 23 2011 02:43:05:817PM 1111123022 Greg Wallace Changes:
Repeat of shot 21.

Result:
Disruption at 0.14s, 200kA.

Next shot:
Repeat shot 22.

Nov 23 2011 02:59:15:507PM 1111123023 Greg Wallace Changes:
Repeat shot 22.

Result:
Another disruption, 0.14s, 200kA. Does not seem to be getting much better.

Next shot:
Repeat shot 23.

Nov 23 2011 03:16:47:247PM 1111123024 Greg Wallace Changes:
Repeat shot 23.

Result:
Disruption at 0.16s, longest plasma so far.

Next shot:
Reduce seg 1 RCUR programming from 64cm to 63 cm at 50ms and from 65cm to 64.5cm at 90ms. Also decrease Ip at start of seg 2 to 350kA to avoid sudden jog in Ip programming at segment switch.

Nov 23 2011 03:28:35:660PM 1111123025 Greg Wallace Changes:
Reduce seg 1 RCUR programming from 64cm to 63 cm at 50ms and from 65cm to 64.5cm at 90ms. Also decrease Ip at start of seg 2 to 350kA to avoid sudden jog in Ip programming at segment switch.

Result:
Disruption at 0.16s, 270kA. RCUR programming change helped keep injections away until about 99ms.

Next shot:
Set RCUR to 64cm at 0.1s in seg 1 and 64.5cm in seg 2. (Difference to account for RCUR offset of 3500 in seg 1 vs 0 in seg 2.)

Nov 23 2011 03:49:37:230PM 1111123026 Greg Wallace Changes:
Set RCUR to 64cm at 0.1s in seg 1 and seg 2.

Result:
Disruption at 0.18 s, 300kA. Injection just after segment switch at 0.1s.

Next shot:
Decrease RCUR to 65cm at 0.26s and 65.5cm at 0.5s. Reduce CLEARIN to -1.5cm to keep plasma inner wall limited at start of seg 2.

Nov 23 2011 03:57:26:740PM 1111123027 Greg Wallace Changes:
Decrease RCUR to 65cm at 0.26s and 65.5cm at 0.5s. Reduce CLEARIN to -1.5cm to keep plasma inner wall limited at start of seg 2.

Result:
Disruption at 0.13s, 300kA.

Next shot:
Set ZCUR to 0 for duration of seg 2. Reduce RCUR at .26s to .645m and at .5s to .65m.

Nov 23 2011 04:05:17:973PM 1111123028 Greg Wallace Changes:
Set ZCUR to 0 for duration of seg 2. Reduce RCUR at .26s to .645m and at .5s to .65m.

Result:
Fizzle.

Next shot:
Repeat of shot 28.

Nov 23 2011 04:23:37:500PM 1111123029 Greg Wallace Changes:
Repeat of shot 28.

Result:
Fizzle. Gas pressure looks similar to shot 8.

Next shot:
Repeat shot 29.

Nov 23 2011 04:39:50:027PM 1111123030 Greg Wallace Changes:
Repeat shot 29.

Result:
Looks good until 60ms when current ramp slows down. Disruption at 0.16s, 280 kA max.

Next shot:
Repeat shot 30.

Nov 23 2011 04:49:22:483PM 1111123031 Greg Wallace Changes:
Repeat shot 30.

Result:
Fizzle.

Next shot:
Repeat shot 31.

Nov 23 2011 04:59:30:547PM 1111123032 Greg Wallace Changes:
Repeat shot 31.

Result:
Disruption at 0.18s, 260kA max.

Next shot:
Reduce PG4 prefill from 20ms to 17 ms to reduce chance of fizzle on last shot.

Nov 23 2011 05:08:03:650PM 1111123033 Greg Wallace Changes:
Reduce PG4 prefill from 20ms to 17 ms to reduce chance of fizzle on last shot.

Result:
Last shot. Disruption at 0.13s, 240kA max.

Engineering Operator Comments

Shot Time Type Status Comment

1 09:16:57:197AM Plasma Ok

2 09:34:05:547AM Plasma Ok

3 09:50:15:113AM Plasma Ok

4 10:10:19:587AM Plasma Ok

5 10:26:41:550AM Plasma Ok

6 10:39:11:490AM Plasma Ok

7 10:51:46:403AM Plasma Ok

8 11:05:34:017AM Plasma Ok

9 11:18:05:767AM Plasma Ok

10 11:31:27:380AM Plasma Ok

11 11:44:55:903AM Plasma Ok

12 11:58:41:437AM Plasma Ok

13 12:12:52:913PM Plasma Ok

14 12:26:06:107PM Plasma Bad No TF

15 12:38:39:517PM Plasma Ok

16 01:17:34:537PM Plasma Ok

17 01:30:21:800PM Plasma Ok

18 01:43:43:180PM Plasma Ok

19 01:57:08:260PM Plasma Ok

20 02:10:38:083PM Plasma Ok

21 02:24:06:297PM Plasma Ok

22 02:37:25:787PM Plasma Ok

23 02:51:38:283PM Plasma Ok

24 03:04:56:400PM Plasma Ok

25 03:18:12:673PM Plasma Ok

26 03:31:41:437PM Plasma Ok

27 03:44:58:930PM Plasma Ok

28 03:58:31:770PM Plasma Ok

29 04:11:43:510PM Plasma Ok

30 04:27:24:750PM Plasma Ok

31 04:40:18:567PM Plasma Ok

32 04:52:33:390PM Plasma Ok

33 05:05:03:597PM Plasma Ok

System Availability

Nov 23 2011 09:16:17:840AM

System Available Comment Availability
Changed Owner Description Who Can
Change
Active MHD no secured - tagged out Jun 02 2008 11:03AM (sears) Joe Snipes Active MHD Antenna golfit
BES yes BES system is online Nov 22 2011 02:21PM (bespam) Bill Rowan Beam Emission Spectroscopy bespam,liao,rowan
Bolometers yes 2pi and midplane AXUV diodes awaiting first plasma. Divertor diodes installed, but amplifiers need to be installed. Core and divertor bolometry not yet hooked up Nov 17 2011 02:45PM (mlreinke) Matt Reinke Bolometers hutch,mlreinke
Boronization no Bottle Removed. Magnetron Unplugged Apr 11 2011 09:51AM (dekow) Jim Irby Boronization dekow,irby
CNPA yes Multiple channel CNPA available, no safety risk for in-vessel access Apr 14 2011 12:01PM (parker) Ron Parker Compact Neutral Analyzer parker
Cryopump - Upper Divertor no Shut down. Helium dewar removed. LN2 manual valve closed/ red-tagged and solenoid valves are closed Apr 15 2011 10:55AM (dekow) Brian LaBombard Upper Divertor Cryopump dekow,irby,labombard
CXRS yes core-CXRS system is online Nov 22 2011 02:21PM (bespam) Bill Rowan Charge Exchange Spectroscopy bespam,blip,liao,rachmcd,rowan
CXRS edge yes Michael CHurchill has primary responsibility at the moment Apr 19 2011 11:44AM (blip) Bruce Lipshultz Measurement of CXR light in the pedestal region at both the high- and low-field sides blip,rmchurch
D Alpha yes \ha2_bright is available; \SPECTROSCOPY::TOP.VUV.VIS_SIGNALS:MCP_VIS_SIG1 is not available Jul 01 2009 09:45AM (terry) Jim Terry Balmer Alpha Monitor irby,terry,wolfe
Dalsa no system is secured for the shutdown, and poses no safety risk for in-vessel access; camera removed from k-port Jun 02 2011 10:21AM (marmar) Earl Marmar Visible Bremsstrahlung marmar
Disruption Mitigation no gas jet valve disabled on 2011/04/13 Apr 13 2011 02:04PM (granetz) Robert Granetz Gas Jet granetz,whyte
Divertor IR no Mar 06 2007 10:50AM Glen Wurden Divertor IR Digital Video gwurden,terry
Divertor IR Spectroscopy no Mar 06 2007 10:51AM Glen Wurden Divertor IR Spectroscopy gwurden,terry
DMBolo AXUV diodes no Still setting up the data acquisition system. Nov 20 2011 12:19AM (golynyk) Geoff Olynyk Set of six AXUV diodes in a toroidal array of midplane wall boxes. Views poloidal "slices" of plasma through a 50 micron pinhole golynyk
DNB no gate valve disabled on 2011/04/13 Apr 13 2011 02:03PM (granetz) Robert Granetz Diagnostic Neutral Beam dterry,granetz,gung
ECDC yes Operational as of 11/19/11 Nov 22 2011 03:01PM (irby) Jim Irby 2.45 GHz, 3 kW, discharge cleaning system dekow,irby,pfeiffer
FRC-ECE no Power off to RF and IF sections- Power on to DA Apr 11 2011 02:54PM (phillips) Perry Phillips Heterodyne ECE-32 channels bespam,liao,phillips,rowan,whitea
G-Side Ratiomatic no Power supply OFF Gauge removed Apr 14 2011 09:52AM (labombard) Brian LaBombard G-side ratiomatic ionization gauge labombard,toland
Glow Discharge no Power supply unplugged and redtagged, HV cables removed Apr 14 2011 08:03AM (dekow) Jim Irby 1 kV, 5 A, glow discharge system dekow,dterry,irby
GPC yes Front end under vacuum -8 scale. Gate valve enabled. Will be using new preamps. Nov 18 2011 12:24PM (hubbard) Amanda Hubbard ECE Polychromater hubbard
GPC2 yes Dewar cold. Nov 21 2011 09:55AM (hubbard) Amanda Hubbard ECE Polychromater hubbard
GPI yes The Xpt-view, the midplane-view cameras are operational. The innerwall GPI (coupled to the fast-diodes) is available. Jul 01 2009 09:45AM (terry) Jim Terry Gas Puff Imaging terry,zweben
H/D yes no safety risk for in-vessel access; Apr 14 2011 11:47AM (marmar) Earl Marmar H/D Ratio marmar
HEAT no Breakers off and red tagged Apr 14 2011 11:27AM (dekow) Gary Dekow - Machine Heaters - burke,dekow
Hirex Jr yes Hirex-Jr has been installed Jun 28 2010 03:36PM (rice) John Rice High Resolution X-Ray ince,rice
Hirex Sr no HiReX installed but not hooked up yet, pending end of bake. Nov 10 2011 11:57AM (ypodpaly) John Rice High Resolution X-Ray ince,rice,ypodpaly
HXR yes 32 Channels operational,, no safety risk for in-vessel access Apr 14 2011 12:05PM (parker) Ron Parker Hard X-Ray Array faust,parker,schmidt
ICRF D-Antenna no secured Apr 14 2011 08:55AM (wukitch) Steve Wukitch D-port antenna wukitch,ylin
ICRF E-Antenna no secured Apr 14 2011 08:55AM (wukitch) Steve Wukitch E-port antenna wukitch,ylin
ICRF J-Antenna no secured Apr 14 2011 08:56AM (wukitch) Steve Wukitch J-port antenna wukitch,ylin
Impurity Spectroscopy yes Being upgraded with better optics and new spectrographs. Dan Miller has primary responsibility. Apr 19 2011 11:46AM (blip) Bruce Lipshultz Measurement of recycling light and impurity source rates at multiple surfaces around the tokamak blip,miller
Laser Blow-Off no Beamline disconnected Apr 14 2011 11:53AM (g) Martin Greenwald Impurity Injection System g,nthoward
Lower Hybrid no LH HV Breaker Opened and Tagged, TPS Upgrade Underway Nov 10 2011 03:51PM (dterry) Ron Parker Lower Hybrid dterry,parker,wallaceg
Lower Hybrid Reflectometer no off Apr 15 2011 08:24AM (dominguez) Arturo Dominguez Lower Hybrid Reflectometer dominguez,marmar,parker,sgbaek
Lower Hybrid SOL reflectometer no please notify if moving LH or reflectometer components Apr 14 2011 08:57AM (wukitch) Cornwall Lau Lower Hybrid SOL reflectometer cornwall,wukitch,ylin
LoWEUS no camera control softward unavailable, but gate-valve control ready to be tested Nov 21 2011 06:58PM (mlreinke) Matthew L. Reinke Long Wavelength Extreme Ultraviolet Spectrometer markchil,mlreinke
LPI no Beam line removed May 30 2008 02:09PM (bose) Earl Marmar Lithium Pellet Injector bose,marmar
Ly-alpha no Midplane Lyman awaiting first plasma. B-PORT and LEDGE arrays installed but do not yet have amplifiers hooked up. Nov 17 2011 02:42PM (mlreinke) Matt Reinke Lyman alpha cameras faustian,labombard,mlreinke
McPherson no broken turbo pump, McPherson unavailable Nov 17 2011 02:42PM (mlreinke) Jim Terry VUV Spectrometer markchil,mlreinke,terry
Michelson yes Front end at 5e-8 T. Gate valve enabled, dewar cold. Low speed to start. Nov 21 2011 09:55AM (hubbard) Amanda Hubbard ECE Te Profiles hubbard,schmidt
MKS no Secured for work. Power supplies are turned off. Apr 14 2011 11:37AM (labombard) Brian LaBombard Baratron pressure gauges labombard,toland
MLP no System is in edge lab. Version 2 drivers ready to test. Needs a student to help work on it. Jul 14 2009 09:20PM (labombard) Brian LaBombard Mirror Langmuir Probe Electronics System labombard
MSE no no safety risk for in-vessel access as of 4/14/2011 Apr 14 2011 11:48AM (sscott) Steve Scott Motional Stark Effect jinseok,sscott
Neutrons yes High voltage is on. We're ready for plasma. Nov 21 2011 12:58PM (fiore) Catherine Fiore Neutron Detectors fiore
Neuts and Hards yes All detectors Powered On --- Waiting for neutrons for calibration Nov 22 2011 01:05PM (irby) Jim Irby X-Ray/Neutron Detectors at K-Hor irby
NINJA no Secured for vessel entry. Backfilled plenum to helium, disconnected feed line to capillary valves at C-bottom. Apr 14 2011 11:44AM (labombard) Brian LaBombard NINJA gas puff labombard,terry,toland
PCI no Secured for in-vessel work Apr 14 2011 06:21PM (ntsujii) Miklos Porkolab Phase Contrast Imaging emd,ennever,ntsujii,porkolab
Penning Gauges no Secured for vessel entry/work. High voltage power supplies are turned off, all 8 cables HV cables are unplugged at J-port rack Apr 14 2011 09:56AM (labombard) Brian LaBombard Penning Ionization Gauges labombard
Plasma TV yes WIDE1, WIDE2 (chan 33), DANT, JANT and DIV are operational. Jul 01 2009 09:46AM (terry) Jim Terry Video of plasma via several cameras dekow,irby,terry,wolfe
Polarimeter no Safe for Machine Entry Sep 14 2007 12:17PM (irby) Jim Irby C-Mod Polarimeter irby
Power - Alternator Air Switch no Red tagged off Apr 12 2011 07:23AM (dekow) Gary Dekow feeds all the other supplies cochran,dekow,dterry,irby
Power - PEI no Breaker opened and red tagged Apr 11 2011 11:59AM (dekow) Gary Dekow PEI System cochran,dekow,dterry,irby
Power - TMX no Breakers opened and red tagged Apr 11 2011 12:00PM (dekow) Gary Dekow Ef2s,. EFCs and A-Coils byford,cochran,dekow,dterry,irby
Power Systems no All systems disabled for in-vessel entry Apr 14 2011 11:29AM (dekow) Jim Irby C-Mod Magnet Supplies byford,cochran,dekow,dterry,irby
Probe Array - ISD no Secured for vessel entry. Power supplies turned off, all probe cables unplugged at F-port rack. Apr 14 2011 09:56AM (labombard) Brian Labombard Inner Lower Divertor Probe Array labombard
Probe Array - LH no Secured for vessel entry. Power supplies turned off, all probe cables unplugged at A-port rack. Apr 14 2011 09:57AM (labombard) Brian LaBombard Lower Hybrid Probe Array labombard
Probe Array - OSD no Secured for vessel entry. Power supplies turned off, all probe cables unplugged at A-port and F-port racks. Apr 14 2011 09:58AM (labombard) Brian LaBombard Outer Lower Divertor Probe Array (F and J) labombard
Probe Array - UDIV no Secured for vessel entry. Power supplies turned off, all probe cables unplugged at F-port rack. Apr 14 2011 09:58AM (labombard) Brian LaBombard Upper Divertor Probe Array labombard
Reflectometer no off Apr 15 2011 08:24AM (dominguez) Earl Marmar Reflectometer dominguez,marmar
Scanning Probe - ASP no Secured for vessel entry. Power supplies turned off, air turned off and hose disconnected, all probe cables unplugged at A-port rack. Apr 14 2011 09:59AM (labombard) Brian LaBombard A-Port Scanning Probe labombard
Scanning Probe - FSP no Secured for vessel entry. Power supplies turned off, air turned off and hose disconnected, all probe cables unplugged at F-port rack. Apr 14 2011 09:59AM (labombard) Brian LaBombard F-Port Scanning Probe labombard
Scanning Probe - WASP no Secured for vessel entry. Power supplies turned off, Kepco cable unplugged, all probe cables unplugged at F-port rack. Apr 14 2011 11:39AM (labombard) Brian LaBombard Inner Wall Scanning Probe labombard,nsmick
Sparker yes New Type II sparker replaced Type I on 11/17/2011 Nov 23 2011 08:53AM (irby) Jim Irby Field Emission Preionization for C-Mod dekow,irby,parkin
Surface Science Station no SSS is up to air, no safety issues Apr 14 2011 12:06PM (ochoukov) Bruce Lipschultz Radially scanning probe located on K-port blip,ochoukov
TCI yes TCI Operational. Density feedback operational. Nov 10 2011 11:47AM (irby) Jim Irby Two-Color Interferometer irby,murray
TS - Core no All lasers are shut down and cannot be fired into cell. Apr 11 2011 01:20PM (jwhughes) Jerry Hughes Core Thomson scattering jrwalk,jwhughes,yma
TS - Edge no All lasers are shut down and cannot be fired into cell. Apr 11 2011 01:20PM (jwhughes) Jerry Hughes Millimeter resolution edge Thomson scattering jrwalk,jwhughes,yma
Vispec no 350 and 670 nm, 4 spatial channels Nov 28 2007 09:58AM (agraf) Alex Graf Visible Spectrometer agraf
XEUS yes remote triggering of XEUS tested, all TORVAC faults cleared - ready for first plasma Nov 21 2011 06:57PM (mlreinke) Matt Reinke X-ray Extended Ultraviolet Spectrometer markchil,mlreinke
XTOMO yes ARRAY1->4 waiting first plasma, new core ARRAY5 needs debugging and the calibration data checked Nov 17 2011 02:44PM (mlreinke) Bob Granetz X-Ray Tomography faustian,granetz,mlreinke

Physics Operator Comments
Nov 29 2011 08:08:36:410AM		Bill Rowan	loaded 1111129032 as planned. prefill remains at 20 ms. ECDC over the weekend.
Nov 23 2011 09:30:28:390AM	1111123001	Greg Wallace	Changes: First shot of the day. Result: Disruption at ~0.11 s, 250 kA. Lots of runaways. Next shot: Increase early PG3 puff from 12ms to 17ms. Get rid of early negative ZCUR programming. ZCUR now set to 0 for t<0.1s.
Nov 23 2011 09:42:58:580AM	1111123002	Greg Wallace	Changes: Increase early PG3 puff from 12ms to 17ms. Get rid of early negative ZCUR programming. ZCUR now set to 0 for t<0.1s. Result: Post disruption fizzle. Next shot: Repeat.
Nov 23 2011 10:05:20:463AM	1111123003	Greg Wallace	Changes: Repeat of shot 2. Result: Disruption at ~0.07s. Next shot: Repeat.
Nov 23 2011 10:26:19:493AM	1111123004	Greg Wallace	Changes: Repeat of shot 3. Result: Disruption at ~0.08s, 150 kA. Not many runaways. Plasma is still dirty. Next shot: Repeat.
Nov 23 2011 10:34:41:000AM	1111123005	Greg Wallace	Changes: Repeat of shot 4. Result: Still lots of carbon. Disruption at 0.095s 150 kA. Next shot: Turn off PG3 gas puff after 9ms.
Nov 23 2011 10:46:34:677AM	1111123006	Greg Wallace	Changes: Turn off PG3 gas puff after 9ms. Result: Plasma made it to 12ms and 30kA. Looks like a bounce? Next shot: Repeat.
Nov 23 2011 10:59:56:077AM	1111123007	Greg Wallace	Changes: Repeat of shot 6. Result: Fizzle. Bouncy again. Lasted until 19 ms at 30 kA. Next shot: Increase RCUR offset from 2000 to 2750. (Was at 3500 yesterday and reduced to 2000.)
Nov 23 2011 11:14:52:480AM	1111123008	Greg Wallace	Changes: Increase RCUR offset from 2000 to 2750. (Was at 3500 yesterday and reduced to 2000.) Result: Disruption at 0.15 s and 500 kA. Shut down by DPCS_XJUMP. Otherwise looks pretty good. Next shot: Increase RCUR offset from 2750 to 3500. Increase early PG4 puff from 17ms to 20ms.
Nov 23 2011 11:24:03:097AM	1111123009	Greg Wallace	Changes: Increase RCUR offset from 2750 to 3500. Increase early PG4 puff from 17ms to 20ms. Result: Fizzle. Next shot: Repeat.
Nov 23 2011 11:39:59:677AM	1111123010	Greg Wallace	Changes: Repeat of shot 9. Result: Fizzle. Next shot: Repeat.
Nov 23 2011 11:59:03:283AM	1111123011	Greg Wallace	Changes: Repeat of shot 10. Result: Fizzle. Next shot: Repeat.
Nov 23 2011 12:07:33:387PM	1111123012	Greg Wallace	Changes: Repeat of shot 11. Result: Fizzle. Next shot: Repeat.
Nov 23 2011 12:19:49:747PM	1111123013	Greg Wallace	Changes: Repeat of shot 12. Result: Fizzle. Still dirty. Next shot: Repeat.
Nov 23 2011 12:28:38:600PM	1111123014	Greg Wallace	Changes: Repeat of shot 13. Result: Dud. No TF. Next shot: Repeat.
Nov 23 2011 01:07:10:413PM	1111123015	Greg Wallace	Changes: Repeat of shot 13. Result: Fizzle. Next shot: ECDC for 10 min then repeat of shot 15.
Nov 23 2011 01:24:41:370PM	1111123016	Greg Wallace	Changes: ECDC for 10 min then repeat of shot 15. Result: Fizzle. Carbon back down a little, H-alpha way up (frosted detector that has thawed out???). Looks similar to shot 8 up to 10 ms. Next shot: Repeat of shot 16.
Nov 23 2011 01:39:44:417PM	1111123017	Greg Wallace	Changes: Repeat of shot 16. Result: Disruption at 0.14s, 200 kA. Still dirty. Next shot: Repeat of shot 17.
Nov 23 2011 01:51:47:720PM	1111123018	Greg Wallace	Changes: Repeat of shot 17. Result: Disruption at 0.16s. Current reached 300kA before turning over. Current rise slower than in shot 8. Still looking dirty. Next shot: Repeat of shot 18.
Nov 23 2011 02:02:31:620PM	1111123019	Greg Wallace	Changes: Repeat of shot 18. Result: Fizzle. Next shot: Repeat of shot 19.
Nov 23 2011 02:19:46:543PM	1111123020	Greg Wallace	Changes: Repeat of shot 19. Result: Disruption at 0.13s, ~300 kA. Next shot: Repeat of shot 20.
Nov 23 2011 02:31:11:633PM	1111123021	Greg Wallace	Changes: Repeat of shot 20. Result: Fizzle. Next shot: Repeat of shot 21.
Nov 23 2011 02:43:05:817PM	1111123022	Greg Wallace	Changes: Repeat of shot 21. Result: Disruption at 0.14s, 200kA. Next shot: Repeat shot 22.
Nov 23 2011 02:59:15:507PM	1111123023	Greg Wallace	Changes: Repeat shot 22. Result: Another disruption, 0.14s, 200kA. Does not seem to be getting much better. Next shot: Repeat shot 23.
Nov 23 2011 03:16:47:247PM	1111123024	Greg Wallace	Changes: Repeat shot 23. Result: Disruption at 0.16s, longest plasma so far. Next shot: Reduce seg 1 RCUR programming from 64cm to 63 cm at 50ms and from 65cm to 64.5cm at 90ms. Also decrease Ip at start of seg 2 to 350kA to avoid sudden jog in Ip programming at segment switch.
Nov 23 2011 03:28:35:660PM	1111123025	Greg Wallace	Changes: Reduce seg 1 RCUR programming from 64cm to 63 cm at 50ms and from 65cm to 64.5cm at 90ms. Also decrease Ip at start of seg 2 to 350kA to avoid sudden jog in Ip programming at segment switch. Result: Disruption at 0.16s, 270kA. RCUR programming change helped keep injections away until about 99ms. Next shot: Set RCUR to 64cm at 0.1s in seg 1 and 64.5cm in seg 2. (Difference to account for RCUR offset of 3500 in seg 1 vs 0 in seg 2.)
Nov 23 2011 03:49:37:230PM	1111123026	Greg Wallace	Changes: Set RCUR to 64cm at 0.1s in seg 1 and seg 2. Result: Disruption at 0.18 s, 300kA. Injection just after segment switch at 0.1s. Next shot: Decrease RCUR to 65cm at 0.26s and 65.5cm at 0.5s. Reduce CLEARIN to -1.5cm to keep plasma inner wall limited at start of seg 2.
Nov 23 2011 03:57:26:740PM	1111123027	Greg Wallace	Changes: Decrease RCUR to 65cm at 0.26s and 65.5cm at 0.5s. Reduce CLEARIN to -1.5cm to keep plasma inner wall limited at start of seg 2. Result: Disruption at 0.13s, 300kA. Next shot: Set ZCUR to 0 for duration of seg 2. Reduce RCUR at .26s to .645m and at .5s to .65m.
Nov 23 2011 04:05:17:973PM	1111123028	Greg Wallace	Changes: Set ZCUR to 0 for duration of seg 2. Reduce RCUR at .26s to .645m and at .5s to .65m. Result: Fizzle. Next shot: Repeat of shot 28.
Nov 23 2011 04:23:37:500PM	1111123029	Greg Wallace	Changes: Repeat of shot 28. Result: Fizzle. Gas pressure looks similar to shot 8. Next shot: Repeat shot 29.
Nov 23 2011 04:39:50:027PM	1111123030	Greg Wallace	Changes: Repeat shot 29. Result: Looks good until 60ms when current ramp slows down. Disruption at 0.16s, 280 kA max. Next shot: Repeat shot 30.
Nov 23 2011 04:49:22:483PM	1111123031	Greg Wallace	Changes: Repeat shot 30. Result: Fizzle. Next shot: Repeat shot 31.
Nov 23 2011 04:59:30:547PM	1111123032	Greg Wallace	Changes: Repeat shot 31. Result: Disruption at 0.18s, 260kA max. Next shot: Reduce PG4 prefill from 20ms to 17 ms to reduce chance of fizzle on last shot.
Nov 23 2011 05:08:03:650PM	1111123033	Greg Wallace	Changes: Reduce PG4 prefill from 20ms to 17 ms to reduce chance of fizzle on last shot. Result: Last shot. Disruption at 0.13s, 240kA max.

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	09:16:57:197AM	Plasma	Ok
2	09:34:05:547AM	Plasma	Ok
3	09:50:15:113AM	Plasma	Ok
4	10:10:19:587AM	Plasma	Ok
5	10:26:41:550AM	Plasma	Ok
6	10:39:11:490AM	Plasma	Ok
7	10:51:46:403AM	Plasma	Ok
8	11:05:34:017AM	Plasma	Ok
9	11:18:05:767AM	Plasma	Ok
10	11:31:27:380AM	Plasma	Ok
11	11:44:55:903AM	Plasma	Ok
12	11:58:41:437AM	Plasma	Ok
13	12:12:52:913PM	Plasma	Ok
14	12:26:06:107PM	Plasma	Bad	No TF
15	12:38:39:517PM	Plasma	Ok
16	01:17:34:537PM	Plasma	Ok
17	01:30:21:800PM	Plasma	Ok
18	01:43:43:180PM	Plasma	Ok
19	01:57:08:260PM	Plasma	Ok
20	02:10:38:083PM	Plasma	Ok
21	02:24:06:297PM	Plasma	Ok
22	02:37:25:787PM	Plasma	Ok
23	02:51:38:283PM	Plasma	Ok
24	03:04:56:400PM	Plasma	Ok
25	03:18:12:673PM	Plasma	Ok
26	03:31:41:437PM	Plasma	Ok
27	03:44:58:930PM	Plasma	Ok
28	03:58:31:770PM	Plasma	Ok
29	04:11:43:510PM	Plasma	Ok
30	04:27:24:750PM	Plasma	Ok
31	04:40:18:567PM	Plasma	Ok
32	04:52:33:390PM	Plasma	Ok
33	05:05:03:597PM	Plasma	Ok