Alcator C-Mod Run 1111208 Information

Miniproposals

Miniproposal: 670

Date Filed: 10/25/2011

Title: Statistical properties of scrape-off layer plasma fluctuations

First Author: Odd Erik Garcia

Session Leader: Odd Erik Garcia (shots 1-34)

Operators
Session leader(s):	Odd Erik Garcia
Physics operator(s):	Yijun Lin
Engineering operator(s):	Gary Dekow,Andy Pfeiffer,Ed Fitzgerald

Engineering Operator Run Comment
MP670 - Statistical properties of scrape-off layer plasma fluctuations S

Session Leader Plans

Physics Operators Plans

Entered: Dec 7 2011 11:48:04:763AM

Author: Yijun Lin

-------------------------
1111208:

Engineering setup for Thursday 12/08/2011
-------
MP670 - Statistical properties of scrape-off layer plasma fluctuations

Session leaders: O.E. Garcia
Physics operator: Y. Lin

-----------------
Overnight ECDC in D2:
ECDC Parameters:
------------------------------
gas and pressure: D2 at 2e-4 Torr
sweep: 44/45/103 cm
scan: 20/120 s
Vessel Temp for ECDC 60/60/60
---------------------------------------

Run begins at 9:00 am and ends at 5:00 pm

Power systems as on: 1100716016 (0.55 MA, 5.4 T, 0.35e20 m-2 target, LSN)

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 DISABLED (PG1)
leave B-side upper as is Hybrid DISABLED (PG2)
fill B-main (C-side) with 40 psi D2 Hybrid enabled (PG3)
***fill NINJA with 10 psi helium, DISABLED

Enable gate-valves and shutters: ECE, HiREX Sr, Xeus, LoWEUS
Z-bolo shutter should be closed unless requested by physop

------
Specific diagnostics: Divertor probes, ASP/FSP/WASP, GPI, and edge Thomson

------------------------------------------------------------------------------
Torvac gatevalve toggle (yes/no): no
Boronization: no
Overnight ECDC: Yes. in D2
Impurity injection: no.
ICRF: no.
LH: no.
DNB: no.
Cryopump: no.
------------------------------

Vessel temperature: 35/35/35

Run plan:

Load segment 2 from 1111202026, use the shape/strike-points etc of t = 0.85 sec of this shot, and make flat-top from 0.5 to 1.0 sec.

Density and current scan, see SL-plan.-

Session Leader Summaries

Entered: Dec 12 2011 11:13:48:497AM

Author:

The primary goal of the MP was to record long data records (~1s) of fluctuations in the boundary plasma (midplane and divertor probes and GPI) for a variety of densities and currents. As planned, a three-point density scan was performed at Ip=0.55MA. At Ip=0.8MA we got an Ohmic H-Mode and lost two pins on the ASP probe. The program continued without the possibility to estimate the turbulence driven particle flux. Fluctuation data were subsequently obtained from a three-point density scan at 0.8MA and for two densities at 1.1MA. Selected discharges were repeated with GPI diagnostics. Overall, the experiments were successful and produced many high-quality data time series.

Physics Operator Summaries

Entered: Dec 8 2011 05:08:53:020PM

Author: Yijun Lin

PO_summary: 1111208

Machine ran ok. First several shots were used to obtain fixed strike-point in the flat-top. ZXL was programmed to compensate the strike motion as seen from the probes.

Got some post-disruption fizzles.

We got two 1.1 MA plasma in a row (33 and 34). pcdaqdpcs3 crashed after shot 32, but Josh fixed, then we just went for plasma shot.
----------
score cards:
plasma attempts: 34
plasmas: 27 (2 disruptions in flat-top. several 1.1 MA plasmas disruption during ramp-down)
fizzles: 7
duds: 0

Entered: Dec 8 2011 05:09:06:443PM

Author: Yijun Lin

PO_summary: 1111208

Machine ran ok. Got some fizzles post-disruption and post 1.1 MA shots.
pcdaqdpcs3 crashed before shot 33. Josh fixed it, and got two 1.1 MA plasma in a row.

score cards:
plasma attempts: 34
plasmas: 27 (2 disruptions in flat-top. several 1.1 MA plasmas disruption during ramp-down)
fizzles: 7
duds: 0

Session Leader Comments

Dec 7 2011 10:15:57:780PM Brian Labombard MP#670 - Statistical properties of scrape-off layer plasma fluctuations

The primary goal of the MP is to record long data records (~1s) of plasma fluctuations (Isat, Vf, fluxes) in the boundary plasma, both
at the outer midplane and at the outer divertor surface, for a variety
of densities and currents.

Diagnostic setup:

- Horizontal probe (ASP) operated in a dwell mode at two radial locations: 3mm and 8mm from LCFS.
Electrodes NE and SE in ion saturation mode, NW and SW in floating mode. 5MHz sampling rate.
High heat-flux handling Langmuir-Mach probe head must be installed on A-port drive system.

- Divertor probes: all ramped probes operating in continuous ion saturation mode, flush probes in
floating mode. 0.5MHz sampling rate.

- FSP and WASP Langmuir-Mach scanning probes operated in spatial scan mode. Target probes to
reach to the separatrix (3 plunges) such that the phase velocity shear layer is recorded. Operate in
standard I-V sweep mode (2 kHz) with 5MHz sampling.

Overnight ECDC in D2, standard parameters.

Shot Plan
Reload from shot#1111202026. This was a 0.8 MA, 5.5 tesla shots with NL04 ~ 0.5e20. Change plasma current to 0.55 MA. Change density program to 0.3e20. Remove strike point sweep. Set strike point to be constant, corresponding to the time of 0.85 s in this shot (1111202026). Make sure cross-over patch is employed to stabilize plasma position.

No ICRF. No cryopump. No NINJA. No DNB

0.55 MA
Shot #1 - 3 NL04~0.3 Optimize gaps and probe targeting
Start with ASP scanning to find LCFS location.
Then change to NE and SE in ion saturation mode, NW and SW in floating mode.
Shot #4 - 5 Dwell-scan ASP at 8mm and then 3mm
Shot #6 - 7 NL04~0.5 ASP at 8mm and 3mm
Shot #8 - 9 NL04~0.65 ASP at 8mm and 3mm
0.8 MA
Shot #10 - 11 NL04~0.45 Optimize gaps and probe targeting
Shot #12 - 13 ASP at 8mm and 3mm
Shot #14 repeat
Shot #15 - 16 NL04~0.7 Dwell-scan ASP at 8mm and then 3mm
Shot #17 - 18 NL04~0.95 Dwell-scan ASP at 8mm and then 3mm
Shot #19
1.1 MA
Shot #20 - 22 NL04~0.6 Optimize gaps and probe targeting
Shot #23 - 24 ASP at 8mm and 3mm
Shot #25 - 26 NL04~1.0 ASP at 8mm and 3mm

Dec 8 2011 09:17:33:277AM 1111208001 NL04~0.3 Optimize gaps and probe targeting
ASP scanning to find LCFS location
Constant outer gap from 0.5 to 1.5s
Slight upward drift of outer strike point

Dec 8 2011 09:30:53:740AM 1111208002 NL04~0.3 Optimize gaps and probe targeting
ASP scanning to find LCFS location
Constant outer gap from 0.5 to 1.5s
Slight upward drift of outer strike point

Dec 8 2011 09:54:40:577AM 1111208003 NL04~0.3 Optimize gaps and probe targeting
ASP scanning to find LCFS
Constant LN04 and outer gap from 0.5 to 1.5s
Slight movement of outer strike point
No gas puff

Dec 8 2011 10:00:17:463AM 1111208004 NL04~0.3 Optimize gaps and probe targeting
ASP scanning to find LCFS
Constant LN04 and outer gap from 0.5 to 1.5s
Divertor probe data overlap ASP at 3 and 8mm

Dec 8 2011 10:23:48:147AM 1111208005 NL04~0.3 ASP dwell close to rho=8mm (uncertain)
NE and SE in ion saturation mode
NW and SW in floating mode
Constant outer gap from 0.5 to 1.5s
Small perturbation on LN04 at about t=1.2s

Dec 8 2011 10:34:56:450AM 1111208006 NL04~0.3 ASP dwell 3mm further in
NE and SE in ion saturation mode
NW and SW in floating mode
Constant outer gap from 0.5 to 1.5s
Slightly decreasing LN04
3 arcs on ASP

Dec 8 2011 10:46:37:220AM 1111208007 NL04~0.3 ASP dwell additional 1mm further in
NE and SE in ion saturation mode
NW and SW in floating mode
Constant outer gap from 0.5 to 1.5s
Samll perturbation on LN04 at t=1.2s

Physics Operator Comments

Dec 8 2011 09:15:11:170AM 1111208001 Yijun Lin Request: 5.4 T, 0.55 MA, nl04 = 0.35, SNL, fix strike-point, flat-top 0.5-1.5 sec.

To optimize gaps and probe targeting.

PG4 15 ms.

result: plasma, full-length

next: raise 1 ms on PG4. Program 1 cm downward drift on ZXL to compensate the 'natural' upward drift.

Dec 8 2011 09:28:48:150AM 1111208002 Yijun Lin Request: 5.4 T, 0.55 MA, nl04 = 0.35e20 m^-2, SNL, steady 0.5-1.5 sec.

To optimize gaps and probe targeting.

result: plasma, full-length

next: lower ZXL by 2 cm...

Dec 8 2011 09:41:27:487AM 1111208003 Yijun Lin Request: 5.4 T, 0.55 MA, nl04 = 0.35e20 m^-2, SNL, steady 0.5-1.5 sec.

To optimize gaps and probe targeting.

result: plasma, full-length

next: raise ZXL by 1 cm...

Dec 8 2011 09:53:21:203AM 1111208004 Yijun Lin Request: 5.4 T, 0.55 MA, nl04 = 0.35e20 m^-2, SNL, steady 0.5-1.5 sec.

To optimize gaps and probe targeting.

result: plasma, full-length

next: repeat.

Dec 8 2011 10:10:54:537AM 1111208005 Yijun Lin Request: 5.4 T, 0.55 MA, nl04 = 0.35e20 m^-2, SNL, steady 0.5-1.5 sec.

result: plasma, full-length

next: repeat.

Dec 8 2011 10:43:39:270AM 1111208007 Yijun Lin Request: 5.4 T, 0.55 MA, nl04 = 0.35e20 m^-2, SNL, steady 0.5-1.5 sec.

result: plasma, full-length

next: raise density to 0.5e20 m^-2

Dec 8 2011 11:03:12:000AM 1111208008 Yijun Lin Request: 5.4 T, 0.55 MA, nl04 = 0.35e20 m^-2, SNL, steady 0.5-1.5 sec.

result: plasma, full-length

next: repeat.

Dec 8 2011 11:27:49:767AM 1111208009 Yijun Lin shot 9: Request: 5.4 T, 0.55 MA, nl04 = 0.5e20 m^-2, SNL, steady 0.5-1.5 sec.

result: plasma, full-length

next: raise nl to 0.65...

Dec 8 2011 11:27:26:987AM 1111208010 Yijun Lin shot 10: Request: 5.4 T, 0.55 MA, nl04 = 0.65e20 m^-2, SNL, steady 0.5-1.5 sec.

result: plasma, disrupted at 1.45 sec

next: repeat.

Dec 8 2011 11:40:33:320AM 1111208011 Yijun Lin Request: 5.4 T, 0.55 MA, nl04 = 0.65e20 m^-2, SNL, steady 0.5-1.5 sec.

result: plasma, full-length (no post-disruption fizzle...good)

next: raise density --> 0.8

Dec 8 2011 11:57:54:370AM 1111208012 Yijun Lin Request: 5.4 T, 0.55 MA, nl04 = 0.8e20 m^-2, SNL, steady 0.5-1.5 sec.

result: plasma, big marfe... after divertor detachment.

next: 0.8 MA, nl04 = 0.45

Dec 8 2011 12:11:18:930PM 1111208013 Yijun Lin Request: 5.4 T, 0.8 MA, nl04 = 0.45e20 m^-2, SNL, steady 0.5-1.5 sec.

result: plasma, full length (ohmic h-mode near the end)

next: repeat, try to make density more steady..

Dec 8 2011 12:35:32:067PM 1111208015 Yijun Lin post-disruption fizzle. (high CII light at t = 10 ms)
next: repeat, no pcs change.

Dec 8 2011 12:49:17:310PM 1111208016 Yijun Lin Request: 5.4 T, 0.8 MA, nl04 = 0.45e20 m^-2, SNL, steady 0.5-1.5 sec.

result: plasma, full length, density not steady...

next: repeat.

Dec 8 2011 01:13:57:923PM 1111208017 Yijun Lin Request: 5.4 T, 0.8 MA, nl04 = 0.45e20 m^-2, SNL, steady 0.5-1.5 sec.

result: plasma, Long ELMy ohmic H-mode...disrupted during rampdown...

next: raise nl to 0.7

Dec 8 2011 01:23:55:213PM 1111208018 Yijun Lin Request: 5.4 T, 0.8 MA, nl04 = 0.7e20 m^-2, SNL, steady 0.5-1.5 sec.

result: plasma, full length
next: repeat

Dec 8 2011 01:40:23:297PM 1111208019 Yijun Lin Request: 5.4 T, 0.8 MA, nl04 = 0.7e20 m^-2, SNL, steady 0.5-1.5 sec.

result: plasma, full length
next: reload shot 16, with NINJA

Dec 8 2011 01:51:27:337PM 1111208020 Yijun Lin Request: 5.4 T, 0.8 MA, nl04 = 0.45e20 m^-2, SNL, steady 0.5-1.5 sec.

result: plasma, full length, too much puff from NINJA
next: repeat with less NINJA

Dec 8 2011 02:10:49:057PM 1111208021 Yijun Lin Request: 5.4 T, 0.8 MA, nl04 = 0.45e20 m^-2, SNL, steady 0.5-1.5 sec.

result: plasma, full length
next: nl --> 0.9

Dec 8 2011 02:18:18:153PM 1111208022 Yijun Lin Request: 5.4 T, 0.8 MA, nl04 = 0.9e20 m^-2, SNL, steady 0.5-1.5 sec.

result: plasma, disruption 1.5 sec
next: repeat...with NINJA

Dec 8 2011 02:34:30:540PM 1111208023 Yijun Lin another post-disruption fizzle..

reduce PG4 by 1 ms.

Dec 8 2011 02:45:02:603PM 1111208024 Yijun Lin 2 fizzles in a row.
Increase PG4 puff 3 ms, go the other way...

Dec 8 2011 02:57:35:447PM 1111208025 Yijun Lin Request: 5.4 T, 0.8 MA, nl04 = 0.9e20 m^-2, SNL, steady 0.5-1.5 sec.

result: plasma,full length.

next: nl04 0.45e20, reload shot 21, without NINJA

Dec 8 2011 03:18:09:000PM 1111208026 Yijun Lin fizzle.

Increase ICEF4U by 10 A.

Dec 8 2011 03:27:27:380PM 1111208027 Yijun Lin Request: 5.4 T, 0.8 MA, nl04 = 0.45e20 m^-2, SNL, steady 0.5-1.5 sec.

result: plasma,full length. (ohmic H-mode)

next: increase ICEF4U by 10 A more. Raise Ip to 1.1 MA, nl = 0.6 e20m^-2

Dec 8 2011 03:39:52:120PM 1111208028 Yijun Lin Request: 5.4 T, 1.1 MA, nl04 = 0.6e20 m^-2, SNL, steady 0.5-1.5 sec.

result: plasma, disrupted during ramping down. ELM-free H-mode 1.3-1.5 sec.

next: repeat.

Dec 8 2011 04:01:42:367PM 1111208029 Yijun Lin fizzle (post-disruption)

No pcs change, and hope it can recover. (and it did!)

Dec 8 2011 04:09:35:017PM 1111208030 Yijun Lin Request: 5.4 T, 1.1 MA, nl04 = 0.6e20 m^-2, SNL, steady 0.5-1.5 sec.

result: plasma, disruption during ramp-down. (h-modes)

next: Increase ICEF4 by 10 A...repeat

Dec 8 2011 04:19:45:300PM 1111208031 Yijun Lin fizzle.

next: no PCS change.

Dec 8 2011 04:29:37:450PM 1111208032 Yijun Lin fizzle. two in a row.

next: reload segment 1 from shot 30.

Dec 8 2011 04:53:42:030PM 1111208033 Yijun Lin Request: 5.4 T, 1.1 MA, nl04 = 0.6e20 m^-2, SNL, steady 0.5-1.5 sec.

result: plasma, full length..H-modes

next: raise nl to 1.0.

Dec 8 2011 05:05:45:803PM 1111208034 Yijun Lin Request: 5.4 T, 1.1 MA, nl04 = 1.0e20 m^-2, SNL, steady 0.5-1.5 sec.

result: plasma, disruption at 1.5 sec.

End of run.

Engineering Operator Comments

Shot Time Type Status Comment

1 09:00:49:313AM Plasma Ok

2 09:15:32:330AM Plasma Ok

3 09:30:51:040AM Plasma Ok

4 09:45:03:573AM Plasma Ok

5 10:02:38:837AM Plasma Ok

6 10:23:51:190AM Plasma Ok

7 10:36:54:653AM Plasma Ok

8 10:49:43:197AM Plasma Ok

9 11:05:52:380AM Plasma Ok

10 11:20:01:847AM Plasma Ok

11 11:33:05:020AM Plasma Ok

12 11:46:08:080AM Plasma Ok

13 11:58:49:223AM Plasma Ok

14 12:12:29:730PM Plasma Ok

15 12:30:55:880PM Plasma Ok

16 12:43:21:760PM Plasma Ok

17 12:59:42:660PM Plasma Ok

18 01:15:34:910PM Plasma Ok

19 01:28:19:557PM Plasma Ok

20 01:45:19:497PM Plasma Ok

21 01:59:13:097PM Plasma Ok

22 02:13:00:393PM Plasma Ok

23 02:26:10:573PM Plasma Ok

24 02:38:51:917PM Plasma Ok

25 02:51:16:337PM Plasma Ok

26 03:03:57:473PM Plasma Ok

27 03:17:31:763PM Plasma Ok

28 03:30:34:620PM Plasma Ok

29 03:47:34:310PM Plasma Ok

30 03:59:51:803PM Plasma Ok

31 04:12:32:337PM Plasma Ok

32 04:24:53:063PM Plasma Ok

33 04:49:09:473PM Plasma Ok

34 05:02:35:513PM Plasma Ok

System Availability

Dec 8 2011 09:00:12:063AM

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 is installed and aligned, but not functional (appears to be a broken cable) Dec 05 2011 02:41PM (marmar) Earl Marmar Visible Bremsstrahlung Imaging 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 Diodes are taking data, but system is not fully operational yet. Post-acquisition data processing code is not yet functional. Dec 02 2011 03:27PM (golynyk) Geoff Olynyk Set of six AXUV diodes in a toroidal array of midplane wall boxes. golynyk,granetz,mlreinke,whyte
DNB yes Dec 01 2011 11:46AM (granetz) Robert Granetz Diagnostic Neutral Beam dterry,granetz,mochung
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 yes Dec 02 2011 12:24PM (toland) 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 Using new preamps. Nov 30 2011 07:51AM (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 system is functional and taking data Dec 05 2011 02:42PM (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 yes Installed and aligned. Will be available for Ti/Vr profiles after focusing tests and locked modes are taken. Dec 06 2011 08:21AM (ypodpaly) John Rice High Resolution X-Ray cgao,ldelgado,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
LoWEUS yes LoWEUS working with the shot cycle. Viewing Mo line-emission normally covered by McPherson. Raw data only in tree. Dec 01 2011 02:54PM (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
Magnetics yes Dec 01 2011 11:51AM (g) Robert Granetz Bp coils and flux loops for equilibrium control granetz,wolfe
McPherson no new turbo pump, installed, McP pumping down. Almost ready to open to machine. Dec 06 2011 12:16PM (mlreinke) Jim Terry VUV Spectrometer markchil,mlreinke,terry
Michelson yes Front end at 4.5e-8 T. Reduced speed for initial operation. Nov 30 2011 07:51AM (hubbard) Amanda Hubbard ECE Te Profiles hubbard,schmidt
MKS yes Dec 02 2011 12:27PM (toland) 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 yes C-bottom and new F-bottom system ready. Dec 02 2011 12:28PM (toland) Brian LaBombard NINJA gas puff labombard,terry,toland
PCI yes Operational. Nov 30 2011 12:45PM (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
SOL reflectometer yes c-port waveguides operational, h-port waveguides are not. Nov 29 2011 12:04PM (cornwall) Cornwall Lau SOL reflectometer cornwall,wukitch,ylin
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 XEUS working with the shot cycle. Viewing low-Z emission. Dec 01 2011 02:55PM (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) Robert Granetz X-Ray Tomography faustian,granetz,mlreinke

Session Leader Comments
Dec 7 2011 10:15:57:780PM		Brian Labombard	MP#670 - Statistical properties of scrape-off layer plasma fluctuations The primary goal of the MP is to record long data records (~1s) of plasma fluctuations (Isat, Vf, fluxes) in the boundary plasma, both at the outer midplane and at the outer divertor surface, for a variety of densities and currents. Diagnostic setup: - Horizontal probe (ASP) operated in a dwell mode at two radial locations: 3mm and 8mm from LCFS. Electrodes NE and SE in ion saturation mode, NW and SW in floating mode. 5MHz sampling rate. High heat-flux handling Langmuir-Mach probe head must be installed on A-port drive system. - Divertor probes: all ramped probes operating in continuous ion saturation mode, flush probes in floating mode. 0.5MHz sampling rate. - FSP and WASP Langmuir-Mach scanning probes operated in spatial scan mode. Target probes to reach to the separatrix (3 plunges) such that the phase velocity shear layer is recorded. Operate in standard I-V sweep mode (2 kHz) with 5MHz sampling. Overnight ECDC in D2, standard parameters. Shot Plan Reload from shot#1111202026. This was a 0.8 MA, 5.5 tesla shots with NL04 ~ 0.5e20. Change plasma current to 0.55 MA. Change density program to 0.3e20. Remove strike point sweep. Set strike point to be constant, corresponding to the time of 0.85 s in this shot (1111202026). Make sure cross-over patch is employed to stabilize plasma position. No ICRF. No cryopump. No NINJA. No DNB 0.55 MA Shot #1 - 3 NL04~0.3 Optimize gaps and probe targeting Start with ASP scanning to find LCFS location. Then change to NE and SE in ion saturation mode, NW and SW in floating mode. Shot #4 - 5 Dwell-scan ASP at 8mm and then 3mm Shot #6 - 7 NL04~0.5 ASP at 8mm and 3mm Shot #8 - 9 NL04~0.65 ASP at 8mm and 3mm 0.8 MA Shot #10 - 11 NL04~0.45 Optimize gaps and probe targeting Shot #12 - 13 ASP at 8mm and 3mm Shot #14 repeat Shot #15 - 16 NL04~0.7 Dwell-scan ASP at 8mm and then 3mm Shot #17 - 18 NL04~0.95 Dwell-scan ASP at 8mm and then 3mm Shot #19 1.1 MA Shot #20 - 22 NL04~0.6 Optimize gaps and probe targeting Shot #23 - 24 ASP at 8mm and 3mm Shot #25 - 26 NL04~1.0 ASP at 8mm and 3mm
Dec 8 2011 09:17:33:277AM	1111208001		NL04~0.3 Optimize gaps and probe targeting ASP scanning to find LCFS location Constant outer gap from 0.5 to 1.5s Slight upward drift of outer strike point
Dec 8 2011 09:30:53:740AM	1111208002		NL04~0.3 Optimize gaps and probe targeting ASP scanning to find LCFS location Constant outer gap from 0.5 to 1.5s Slight upward drift of outer strike point
Dec 8 2011 09:54:40:577AM	1111208003		NL04~0.3 Optimize gaps and probe targeting ASP scanning to find LCFS Constant LN04 and outer gap from 0.5 to 1.5s Slight movement of outer strike point No gas puff
Dec 8 2011 10:00:17:463AM	1111208004		NL04~0.3 Optimize gaps and probe targeting ASP scanning to find LCFS Constant LN04 and outer gap from 0.5 to 1.5s Divertor probe data overlap ASP at 3 and 8mm
Dec 8 2011 10:23:48:147AM	1111208005		NL04~0.3 ASP dwell close to rho=8mm (uncertain) NE and SE in ion saturation mode NW and SW in floating mode Constant outer gap from 0.5 to 1.5s Small perturbation on LN04 at about t=1.2s
Dec 8 2011 10:34:56:450AM	1111208006		NL04~0.3 ASP dwell 3mm further in NE and SE in ion saturation mode NW and SW in floating mode Constant outer gap from 0.5 to 1.5s Slightly decreasing LN04 3 arcs on ASP
Dec 8 2011 10:46:37:220AM	1111208007		NL04~0.3 ASP dwell additional 1mm further in NE and SE in ion saturation mode NW and SW in floating mode Constant outer gap from 0.5 to 1.5s Samll perturbation on LN04 at t=1.2s

Physics Operator Comments
Dec 8 2011 09:15:11:170AM	1111208001	Yijun Lin	Request: 5.4 T, 0.55 MA, nl04 = 0.35, SNL, fix strike-point, flat-top 0.5-1.5 sec. To optimize gaps and probe targeting. PG4 15 ms. result: plasma, full-length next: raise 1 ms on PG4. Program 1 cm downward drift on ZXL to compensate the 'natural' upward drift.
Dec 8 2011 09:28:48:150AM	1111208002	Yijun Lin	Request: 5.4 T, 0.55 MA, nl04 = 0.35e20 m^-2, SNL, steady 0.5-1.5 sec. To optimize gaps and probe targeting. result: plasma, full-length next: lower ZXL by 2 cm...
Dec 8 2011 09:41:27:487AM	1111208003	Yijun Lin	Request: 5.4 T, 0.55 MA, nl04 = 0.35e20 m^-2, SNL, steady 0.5-1.5 sec. To optimize gaps and probe targeting. result: plasma, full-length next: raise ZXL by 1 cm...
Dec 8 2011 09:53:21:203AM	1111208004	Yijun Lin	Request: 5.4 T, 0.55 MA, nl04 = 0.35e20 m^-2, SNL, steady 0.5-1.5 sec. To optimize gaps and probe targeting. result: plasma, full-length next: repeat.
Dec 8 2011 10:10:54:537AM	1111208005	Yijun Lin	Request: 5.4 T, 0.55 MA, nl04 = 0.35e20 m^-2, SNL, steady 0.5-1.5 sec. result: plasma, full-length next: repeat.
Dec 8 2011 10:43:39:270AM	1111208007	Yijun Lin	Request: 5.4 T, 0.55 MA, nl04 = 0.35e20 m^-2, SNL, steady 0.5-1.5 sec. result: plasma, full-length next: raise density to 0.5e20 m^-2
Dec 8 2011 11:03:12:000AM	1111208008	Yijun Lin	Request: 5.4 T, 0.55 MA, nl04 = 0.35e20 m^-2, SNL, steady 0.5-1.5 sec. result: plasma, full-length next: repeat.
Dec 8 2011 11:27:49:767AM	1111208009	Yijun Lin	shot 9: Request: 5.4 T, 0.55 MA, nl04 = 0.5e20 m^-2, SNL, steady 0.5-1.5 sec. result: plasma, full-length next: raise nl to 0.65...
Dec 8 2011 11:27:26:987AM	1111208010	Yijun Lin	shot 10: Request: 5.4 T, 0.55 MA, nl04 = 0.65e20 m^-2, SNL, steady 0.5-1.5 sec. result: plasma, disrupted at 1.45 sec next: repeat.
Dec 8 2011 11:40:33:320AM	1111208011	Yijun Lin	Request: 5.4 T, 0.55 MA, nl04 = 0.65e20 m^-2, SNL, steady 0.5-1.5 sec. result: plasma, full-length (no post-disruption fizzle...good) next: raise density --> 0.8
Dec 8 2011 11:57:54:370AM	1111208012	Yijun Lin	Request: 5.4 T, 0.55 MA, nl04 = 0.8e20 m^-2, SNL, steady 0.5-1.5 sec. result: plasma, big marfe... after divertor detachment. next: 0.8 MA, nl04 = 0.45
Dec 8 2011 12:11:18:930PM	1111208013	Yijun Lin	Request: 5.4 T, 0.8 MA, nl04 = 0.45e20 m^-2, SNL, steady 0.5-1.5 sec. result: plasma, full length (ohmic h-mode near the end) next: repeat, try to make density more steady..
Dec 8 2011 12:35:32:067PM	1111208015	Yijun Lin	post-disruption fizzle. (high CII light at t = 10 ms) next: repeat, no pcs change.
Dec 8 2011 12:49:17:310PM	1111208016	Yijun Lin	Request: 5.4 T, 0.8 MA, nl04 = 0.45e20 m^-2, SNL, steady 0.5-1.5 sec. result: plasma, full length, density not steady... next: repeat.
Dec 8 2011 01:13:57:923PM	1111208017	Yijun Lin	Request: 5.4 T, 0.8 MA, nl04 = 0.45e20 m^-2, SNL, steady 0.5-1.5 sec. result: plasma, Long ELMy ohmic H-mode...disrupted during rampdown... next: raise nl to 0.7
Dec 8 2011 01:23:55:213PM	1111208018	Yijun Lin	Request: 5.4 T, 0.8 MA, nl04 = 0.7e20 m^-2, SNL, steady 0.5-1.5 sec. result: plasma, full length next: repeat
Dec 8 2011 01:40:23:297PM	1111208019	Yijun Lin	Request: 5.4 T, 0.8 MA, nl04 = 0.7e20 m^-2, SNL, steady 0.5-1.5 sec. result: plasma, full length next: reload shot 16, with NINJA
Dec 8 2011 01:51:27:337PM	1111208020	Yijun Lin	Request: 5.4 T, 0.8 MA, nl04 = 0.45e20 m^-2, SNL, steady 0.5-1.5 sec. result: plasma, full length, too much puff from NINJA next: repeat with less NINJA
Dec 8 2011 02:10:49:057PM	1111208021	Yijun Lin	Request: 5.4 T, 0.8 MA, nl04 = 0.45e20 m^-2, SNL, steady 0.5-1.5 sec. result: plasma, full length next: nl --> 0.9
Dec 8 2011 02:18:18:153PM	1111208022	Yijun Lin	Request: 5.4 T, 0.8 MA, nl04 = 0.9e20 m^-2, SNL, steady 0.5-1.5 sec. result: plasma, disruption 1.5 sec next: repeat...with NINJA
Dec 8 2011 02:34:30:540PM	1111208023	Yijun Lin	another post-disruption fizzle.. reduce PG4 by 1 ms.
Dec 8 2011 02:45:02:603PM	1111208024	Yijun Lin	2 fizzles in a row. Increase PG4 puff 3 ms, go the other way...
Dec 8 2011 02:57:35:447PM	1111208025	Yijun Lin	Request: 5.4 T, 0.8 MA, nl04 = 0.9e20 m^-2, SNL, steady 0.5-1.5 sec. result: plasma,full length. next: nl04 0.45e20, reload shot 21, without NINJA
Dec 8 2011 03:18:09:000PM	1111208026	Yijun Lin	fizzle. Increase ICEF4U by 10 A.
Dec 8 2011 03:27:27:380PM	1111208027	Yijun Lin	Request: 5.4 T, 0.8 MA, nl04 = 0.45e20 m^-2, SNL, steady 0.5-1.5 sec. result: plasma,full length. (ohmic H-mode) next: increase ICEF4U by 10 A more. Raise Ip to 1.1 MA, nl = 0.6 e20m^-2
Dec 8 2011 03:39:52:120PM	1111208028	Yijun Lin	Request: 5.4 T, 1.1 MA, nl04 = 0.6e20 m^-2, SNL, steady 0.5-1.5 sec. result: plasma, disrupted during ramping down. ELM-free H-mode 1.3-1.5 sec. next: repeat.
Dec 8 2011 04:01:42:367PM	1111208029	Yijun Lin	fizzle (post-disruption) No pcs change, and hope it can recover. (and it did!)
Dec 8 2011 04:09:35:017PM	1111208030	Yijun Lin	Request: 5.4 T, 1.1 MA, nl04 = 0.6e20 m^-2, SNL, steady 0.5-1.5 sec. result: plasma, disruption during ramp-down. (h-modes) next: Increase ICEF4 by 10 A...repeat
Dec 8 2011 04:19:45:300PM	1111208031	Yijun Lin	fizzle. next: no PCS change.
Dec 8 2011 04:29:37:450PM	1111208032	Yijun Lin	fizzle. two in a row. next: reload segment 1 from shot 30.
Dec 8 2011 04:53:42:030PM	1111208033	Yijun Lin	Request: 5.4 T, 1.1 MA, nl04 = 0.6e20 m^-2, SNL, steady 0.5-1.5 sec. result: plasma, full length..H-modes next: raise nl to 1.0.
Dec 8 2011 05:05:45:803PM	1111208034	Yijun Lin	Request: 5.4 T, 1.1 MA, nl04 = 1.0e20 m^-2, SNL, steady 0.5-1.5 sec. result: plasma, disruption at 1.5 sec. End of run.

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	09:00:49:313AM	Plasma	Ok
2	09:15:32:330AM	Plasma	Ok
3	09:30:51:040AM	Plasma	Ok
4	09:45:03:573AM	Plasma	Ok
5	10:02:38:837AM	Plasma	Ok
6	10:23:51:190AM	Plasma	Ok
7	10:36:54:653AM	Plasma	Ok
8	10:49:43:197AM	Plasma	Ok
9	11:05:52:380AM	Plasma	Ok
10	11:20:01:847AM	Plasma	Ok
11	11:33:05:020AM	Plasma	Ok
12	11:46:08:080AM	Plasma	Ok
13	11:58:49:223AM	Plasma	Ok
14	12:12:29:730PM	Plasma	Ok
15	12:30:55:880PM	Plasma	Ok
16	12:43:21:760PM	Plasma	Ok
17	12:59:42:660PM	Plasma	Ok
18	01:15:34:910PM	Plasma	Ok
19	01:28:19:557PM	Plasma	Ok
20	01:45:19:497PM	Plasma	Ok
21	01:59:13:097PM	Plasma	Ok
22	02:13:00:393PM	Plasma	Ok
23	02:26:10:573PM	Plasma	Ok
24	02:38:51:917PM	Plasma	Ok
25	02:51:16:337PM	Plasma	Ok
26	03:03:57:473PM	Plasma	Ok
27	03:17:31:763PM	Plasma	Ok
28	03:30:34:620PM	Plasma	Ok
29	03:47:34:310PM	Plasma	Ok
30	03:59:51:803PM	Plasma	Ok
31	04:12:32:337PM	Plasma	Ok
32	04:24:53:063PM	Plasma	Ok
33	04:49:09:473PM	Plasma	Ok
34	05:02:35:513PM	Plasma	Ok