Alcator C-Mod Run 1070820 Information

Miniproposals

Operators
Session leader(s):
Physics operator(s):
Engineering operator(s):

Engineering Operator Run Comment
MSE Calibrations (DNB into gas)

Session Leader Plans

Entered: Aug 20 2007 12:33:57:643PM

Author: Jin-Seok Ko

MSE spectrum measurement

Load 1070803032

Torus: D2 gas with no fields

DNB starts at 0.4 sec with a long pulse for 1.4 sec

shot

01 ch9 fiber as it is
02 ch9 fiber as it is
03 ch9 fiber remove/reinstall
04 ch9 fiber remove/reinstall
05 ch9 fiber remove/reinstall
06 ch9 fiber rotate (cw)
07 ch9 fiber rotate further (cw)
08 ch9 fiber rotate (ccw)

Physics Operators Plans

Session Leader Summaries

Entered: Aug 20 2007 02:26:58:193PM

Author: Jin-Seok Ko

1070820 Beam into gas without fields - spectrum measurements

Load 1070803032 (D2 gas with ~ 3mTorr, No field)

Shutter OPEN
Linear polarizer OUT
PEM REMOVED

Ch9 to McPerson (hasn't been moved since the last test)

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
shot dnb configuration
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
01 DAC: 4.1 as it is
02 DAC: 4.1 as it is pic 1

pic 1 - removed/reinstalled - pic 2

03 DAC: 4.1

removed/reinstalled - pic 3

04 DAC: 4.1 - only for 0.5 sec. discard this shot
05 DAC: 4.1 - beam fault

2 dnb conditioning shots

06 DAC: 4.1

removed/reinstalled - pic 4

07 DAC: 4.1

cw - pic 5

08 DAC: 4.1

cw further - pic 6

09 DAC: 4.1

ccw - pic 7 (discard), pic 8 & 9

10 DAC: 4.1

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

Shutter CLOSED
Linear polarizer OUT
PEM REMOVED

Ch9 still to McPerson

Physics Operator Summaries

Session Leader Comments

Aug 20 2007 12:54:47:333PM 1070820001 Steve Scott MSE Beam-into-gas, no fields. Measuring Doppler shift. Setup as per 1070826027.

Note: the fiber configuration currently in place (MSE channel 9 into the spectrometer) has not been
changed, at all, since shot 1070817027.

DNB: exact duplicate of 1070816027. gas: about 0.1 mTorr lower than 1070816027.

Good shot. This is an esteemed member of our little scan.

Next shot: repeat with no changes.

Aug 20 2007 01:16:41:397PM 1070820002 Steve Scott DNB and gas were identical to shot 001.
this is another member of the scan.

Aug 20 2007 01:13:22:203PM 1070820003 Steve Scott Prior to this shot, Jinseok removed the fiber from the holder mechanism in the entrance slit,
and replaced it, as best he could, exactly in the original orientation.

DNB: good
GAS: good

Next: do the same thing for the next shot.

Aug 20 2007 01:21:45:060PM 1070820004 Steve Scott Prior to this shot, Jinseok removed the fiber from the holder mechanism in the entrance slit
(i.e. he repeated the procedure for the previous shot) and replaced it, as best he could,
in exactly the original orientation.

DNB: terminated after about 0.5 sec. not a good dnb pulse
GAS: ok.

next shot: repeat without taking any further action.

Aug 20 2007 01:32:53:483PM 1070820005 Steve Scott DNB: completely faulted. we will get no photons from this shot.

Next shot: reduce the DNB arc current a little, take a conditioning shot,
then take a repeat shot into the torus.

Aug 20 2007 01:45:34:613PM 1070820006 Steve Scott good dnb. good gas.

Next shot: once again, Jinseok will remove the fiber from the holder mechanism and replace it,
as best he can, in exactly the same orientation.

Aug 20 2007 01:54:38:173PM 1070820007 Steve Scott Prior to this shot, Jinseok removed the fiber from the holder mechanism in the spectrometer and then
replaced it, as best he could, in exactly the same orientation.

DNB: good.
GAS: good.

Aug 20 2007 04:29:15:373PM 1070820008 Jin-Seok Ko Prior to this shot, I rotated the fiber by about 2 deg in the clockwise. Took the picture

DNB: good.
GAS: good.

Aug 20 2007 04:29:35:297PM 1070820009 Jin-Seok Ko Prior to this shot, I rotated the fiber by about 2 deg FURTHER in the clockwise. Took the picture

DNB: good.
GAS: good.

Aug 20 2007 04:31:24:423PM 1070820010 Jin-Seok Ko Prior to this shot, I rotated the fiber back to its nominal position then
rotated it by about 2 deg in the counter-clockwise. Took the picture

DNB: good.
GAS: good.

This is the end of run.

Shutter closed.
Beam shut off.
Fiber ch9 still in the spectrometer

Physics Operator Comments

Aug 20 2007 12:19:22:810PM Steve Wolfe
Loaded Steve Scott's beam-into-gas shot from 1070816027 Load at 20-Aug-2007 12:17:57.00 Open tree /home/wolfe/pcs_scratch -1 Open tree done Should be ready for him to run his tests, as soon as he has a beam operator.

Engineering Operator Comments

Shot Time Type Status Comment

1 12:48:57:290PM Test Ok MSE Calibration

2 12:58:46:887PM Test Ok

3 01:08:56:823PM Test Ok

4 01:18:49:590PM Test Ok

5 01:28:35:273PM Test Ok

6 01:42:31:407PM Test Ok

7 01:51:53:500PM Test Ok

8 02:01:18:607PM Test Ok

9 02:10:37:010PM Test Ok

10 02:20:29:853PM Test Ok

System Availability

Aug 20 2007 12:48:37:510PM

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 yes 2Pi diode operational, 2Pi foil being upgrade for noise resistance. Midplane foils calibrated and operational, data in the tree. Outboard midplane AXUV calibrated and operational, data in the tree. Full midplane and divertor views being digitized. Jul 19 2007 04:48PM (mlreinke) Matt Reinke Bolometers hutch,mlreinke
Boronization yes First Boronization 5/9/07 May 10 2007 04:55PM (irby) Jim Irby Boronization dekow,irby
CNPA no Jan 14 2007 02:06PM Ron Parker Compact Neutral Analyzer parker
Cryopump - Upper Divertor yes The cryopump is operational in a manual mode. We will be working on interfacing its control system with the C-Mod state machine for semi-automatic operation. May 30 2007 07:58PM (labombard) Brian LaBombard Upper Divertor Cryopump irby,labombard
CXRS yes The pedestal toroidal array was installed, spatially and absolutely calibrated. There are 10 chords intersect the beam at the major_R_range=[75,4:87.4]cm. Spatial resolution: 1.2 cm. The F-top poloidal array was installed and spatially calibrated. There are 19 chords intersect the beam at the major_R_range=[67.8:91.0]cm. Spatial resolution: 1.22 cm. Jun 20 2007 05:35PM (bespam) 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 no Still problems with low freq. RF section. Upper 16 channel working Aug 16 2007 02:45PM (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 1-8 operational. May 24 2007 08:40AM (hubbard) Amanda Hubbard ECE Polychromater hubbard,schmidt
GPC2 yes Most channels (except 1,5,8,10,17) operational. Jun 08 2007 08:29AM (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 Jr yes Mar 06 2007 08:59AM (rice) John Rice High Resolution X-Ray ince,rice
Hirex Sr yes Storing Data, but profiles not yet available Apr 27 2007 01:20PM (ince) 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. Max power is about 1.5 MW Jun 20 2007 09:23AM (ylin) Steve Wukitch D-port antenna wukitch,ylin
ICRF E-Antenna yes 80 MHz. Maxc power is about 1.5 MW Jun 20 2007 09:23AM (ylin) Steve Wukitch E-port antenna wukitch,ylin
ICRF J-Antenna yes 78 MHz. 4-strap configuration. Max ~ 3 MW. Jul 17 2007 03:52PM (ylin) Steve Wukitch J-port antenna wukitch,ylin
Lower Hybrid no 6B Pressure window failed. Arcing in 6B, 8B,9B & 23B. May 04 2007 03:44PM (dterry) Ron Parker Lower Hybrid dterry,parker
LPI yes Apr 26 2007 08:35PM (bose) Earl Marmar Lithium Pellet Injector bose,marmar
Ly-alpha yes Midplane calibrated and operational, data being stored in tree. Divertor views showing significant noise, and not available. Upper view being digitized and analyzed. Jul 19 2007 04:49PM (mlreinke) Matt Reinke Lyman alpha cameras labombard,mlreinke
McPherson yes Working normally. Apr 19 2007 09:52AM (mlreinke) 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 Initial tests on the A-port scanning probe went well. We need to take care of some control glitches that caused some component failures. May 30 2007 08:01PM (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. (4) Expect beam-into-gas calibrations complete about 4/24. Apr 03 2007 12:05PM (sscott) Steve Scott Motional Stark Effect jinseok,sscott
Neutrons yes Both neutron systems are fully operational Apr 05 2007 11:19AM (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 yes The system is to be optimized. May 30 2007 01:12PM (lianglin) 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 yes The 50, 60, 75 and 88 (u,l and center) are installed. The variable frequency channel is being tested. 110 is not functioning Aug 16 2007 01:45PM (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 yes A-port WASP successfully collected data on 04/04. Some intermittent open circuit on SE Electrode. K-WASP took data on 04/11. Both ready to scan as needed. Apr 12 2007 04:18PM (nsmick) Brian LaBombard Inner Wall Scanning Probe labombard,nsmick
TCI yes NL_04 at 71.04 cm from 3/9/07 calibration May 23 2007 07:38AM (irby) Jim Irby Two-Color Interferometer irby,murray
TS - Core yes 2 lasers, 8 spatial channels. Density is calibrated based on ECE cutoffs obtained on 4 May 2007. Old spectrometers have been removed. Additional spatial channels have been added, but are not yet calibrated. Aug 07 2007 10:08AM (jwhughes) Jerry Hughes Core Thomson scattering jwhughes,yma
TS - Edge yes 2 lasers, 20 spatial channels. Fiber holder position is -121.0mm. Density is calibrated according to Raman scattering results from 26 May, supplemented with ECE cutoffs obtained on shot 1070531015. Aug 07 2007 10:08AM (jwhughes) Jerry Hughes Millimeter resolution edge Thomson scattering jwhughes,yma
Vispec yes 350 and 670 nm, 4 spatial channels May 04 2007 01:02PM (agraf) Alex Graf Visible Spectrometer agraf

Session Leader Comments
Aug 20 2007 12:54:47:333PM	1070820001	Steve Scott	MSE Beam-into-gas, no fields. Measuring Doppler shift. Setup as per 1070826027. Note: the fiber configuration currently in place (MSE channel 9 into the spectrometer) has not been changed, at all, since shot 1070817027. DNB: exact duplicate of 1070816027. gas: about 0.1 mTorr lower than 1070816027. Good shot. This is an esteemed member of our little scan. Next shot: repeat with no changes.
Aug 20 2007 01:16:41:397PM	1070820002	Steve Scott	DNB and gas were identical to shot 001. this is another member of the scan.
Aug 20 2007 01:13:22:203PM	1070820003	Steve Scott	Prior to this shot, Jinseok removed the fiber from the holder mechanism in the entrance slit, and replaced it, as best he could, exactly in the original orientation. DNB: good GAS: good Next: do the same thing for the next shot.
Aug 20 2007 01:21:45:060PM	1070820004	Steve Scott	Prior to this shot, Jinseok removed the fiber from the holder mechanism in the entrance slit (i.e. he repeated the procedure for the previous shot) and replaced it, as best he could, in exactly the original orientation. DNB: terminated after about 0.5 sec. not a good dnb pulse GAS: ok. next shot: repeat without taking any further action.
Aug 20 2007 01:32:53:483PM	1070820005	Steve Scott	DNB: completely faulted. we will get no photons from this shot. Next shot: reduce the DNB arc current a little, take a conditioning shot, then take a repeat shot into the torus.
Aug 20 2007 01:45:34:613PM	1070820006	Steve Scott	good dnb. good gas. Next shot: once again, Jinseok will remove the fiber from the holder mechanism and replace it, as best he can, in exactly the same orientation.
Aug 20 2007 01:54:38:173PM	1070820007	Steve Scott	Prior to this shot, Jinseok removed the fiber from the holder mechanism in the spectrometer and then replaced it, as best he could, in exactly the same orientation. DNB: good. GAS: good.
Aug 20 2007 04:29:15:373PM	1070820008	Jin-Seok Ko	Prior to this shot, I rotated the fiber by about 2 deg in the clockwise. Took the picture DNB: good. GAS: good.
Aug 20 2007 04:29:35:297PM	1070820009	Jin-Seok Ko	Prior to this shot, I rotated the fiber by about 2 deg FURTHER in the clockwise. Took the picture DNB: good. GAS: good.
Aug 20 2007 04:31:24:423PM	1070820010	Jin-Seok Ko	Prior to this shot, I rotated the fiber back to its nominal position then rotated it by about 2 deg in the counter-clockwise. Took the picture DNB: good. GAS: good. This is the end of run. Shutter closed. Beam shut off. Fiber ch9 still in the spectrometer

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	12:48:57:290PM	Test	Ok	MSE Calibration
2	12:58:46:887PM	Test	Ok
3	01:08:56:823PM	Test	Ok
4	01:18:49:590PM	Test	Ok
5	01:28:35:273PM	Test	Ok
6	01:42:31:407PM	Test	Ok
7	01:51:53:500PM	Test	Ok
8	02:01:18:607PM	Test	Ok
9	02:10:37:010PM	Test	Ok
10	02:20:29:853PM	Test	Ok