Alcator C-Mod Run 1090818 Information

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Miniproposals

Operators
Session leader(s):
Physics operator(s):Bill Rowan
Engineering operator(s):Bill Cochran,Gary Dekow

Engineering Operator Run Comment
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Session Leader Plans
Entered: Aug 17 2009 11:32:07:243AM
Author: Bruce Lipschultz
MP 565 - 'Measurement of in-out asymmetry in boron density'

The goal is to directly infer the ratio of B+4 density at the low-field side (LFS) and high-field sides (HFS) of the plasma. This result will be compared to a model of the poloidal asymmetry.

SL - Bruce Lipschultz
PO - Bill Rowan

He ECDC overnight. Breakdown in He if it makes sense.

The initial goal is 1 MA plasmas with nl04 ~ 0.6x10^20/m2. Inner gap ~ 1 cm. Outer gap ~ 2 cm. Candidates for previous discharges to use are 1090730028 or 1090731003. Ideally we have breakdown
in He to minimize the D in the discharge. The less D in the discharge the more sure we are that we are just measuring B+4 light as opposed to cxr light from B+5 (for which we have no crosssections and cannot be sure that the neutral density is the same at the inner and outer edges and thus will not be able to compare the in-out asymmetries in B+5).

- ICRF power should either be stepped up or ramped during the discharge to have both L- and H-modes periods.

- Vary the density (2-3 discharges at each density) from nl04=0.6, 0.8 , 1.0.

Physics Operators Plans
Entered: Aug 17 2009 12:03:01:820PM
Author: Bill Rowan
Physop Plan for 1090818

PO: Rowan
SL: Lipschultz for MP565 - In/out boron density asymmetry
LaBombard for MP563 - Toroidal asymmetry of impurity seeding

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Engineering Setup
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Run begins at 08:00 and ends at 17:00
NOTE EARLY START TIME FOR TF TESTS

Power systems as on: 1090731003

Acoil: +Dtop -Dbot -Jtop +Jbot (standard) Hybrid Enabled

Gas setup:

Fill B-Top with 6 psi He4 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 He4 Hybrid enabled (PG3)
fill NINJA with 12 psi N2 DISABLED

Enable gatevalves and shutters: ECE, VUV, Z-bolo

Torvac gatevalve toggle (yes/no): no

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

Vessel temperature: 60/60/60 overnight

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ECDC Parameters
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NOTE: HELIUM ECDC
gas and pressure: He4 at 5e-5 Torr
sweep: 44/45/103 cm
scan: 20/120 s

Session Leader Summaries

Physics Operator Summaries

Session Leader Comments

Physics Operator Comments
Aug 18 2009 08:19:50:223AMBill RowanDelay operations until prepared to do TF power test; ~12:00 to 13:00
Aug 18 2009 03:04:03:053PMBill RowanLoaded 1090814017
reduced nl_04 to 1.0e+20

Engineering Operator Comments
ShotTimeTypeStatusComment
103:13:02:290PMTestBadNo TF Scanner Data
203:44:33:223PMTestOk
304:04:24:170PMTestOk

System Availability
Aug 18 2009 03:12:45:807PM
SystemAvailableCommentAvailability
Changed
OwnerDescriptionWho Can
Change
Active MHDnosecured - tagged outJun 02 2008 11:03AM (sears)Joe SnipesActive MHD Antennasears,snipes
BESyes7 horizontal views spread out R_maj=[0.72-0.9m], 3 cm over the tokamak midplane (beam) Jul 09 2009 05:12PM (bespam)Bill RowanBeam Emission Spectroscopybespam,liao,rowan
Bolometersyes2pi (diode+foil), AXA, AXJ, WB3AX, WB4AX, LEDGE-AX working fine. MID/LEDGE/DIV foils still need calibrations appliedJul 28 2009 09:59AM (mlreinke)Matt ReinkeBolometershutch,mlreinke
BoronizationnoBottle Removed from the Cell, Piezo box on Igloo Removed. System in safe mode for In-Vessel AccessMay 30 2008 02:25PM (dekow)Jim IrbyBoronizationdekow,irby
CNPAnoSingle channel CNPA available as of 12/1707Jun 10 2009 10:22AM (twf)Ron ParkerCompact Neutral Analyzerparker
Cryopump - Upper DivertornoCyopump hardware is not yet reinstalled in the cell.Jul 14 2009 09:21PM (labombard)Brian LaBombardUpper Divertor Cryopumpirby,labombard
CXRSyesThe wide-view toroidal array was installed, spatially and absolutely calibrated. There are 7 toroidal chords intersect the beam at the major_R_range=[74.2:83.6]cm. Spatial resolution: 1.2 cm. The F-top wide-view poloidal array was installed and spatially calibrated. There are 19 chords intersect the beam at the major_R_range=[0.65:0.9.]m. Spatial resolution: 1.22 cm.Jul 09 2009 05:16PM (bespam)Bill RowanCharge Exchange Spectroscopybespam,blip,liao,rachmcd,rowan
D Alphayes\ha2_bright is available; \SPECTROSCOPY::TOP.VUV.VIS_SIGNALS:MCP_VIS_SIG1 is not availableJul 01 2009 09:45AM (terry)Jim TerryBalmer Alpha Monitorirby,terry,wolfe
Dalsayessystem is aligned and operating; not yet calibratedJul 14 2009 02:22PM (marmar)Earl MarmarVisible Bremsstrahlungmarmar
Disruption Mitigationnosafely disabled; ready to be dismantledMay 28 2008 10:22AM (granetz)Robert GranetzGas Jetgranetz,whyte
Divertor IRno Mar 06 2007 10:50AM Glen WurdenDivertor IR Digital Videogwurden,terry
Divertor IR Spectroscopyno Mar 06 2007 10:51AM Glen WurdenDivertor IR Spectroscopygwurden,terry
DNBnopower locked & tagged out; gate valve disabledMay 28 2008 10:03AM (granetz)Robert GranetzDiagnostic Neutral Beamdterry,granetz,gung
ECDCno6/10/09 Magnetron relocated to west wall in cell at H-port. All controls and hardware have been installed but need to be tested prior to full operation. Magnetron Unplugged and Red tagged, PEI breaker red tagged, Safe for In-Vessel ActivityJun 10 2009 02:35PM (dekow)Jim Irby2.45 GHz, 3 kW, discharge cleaning systemdekow,irby,pfeiffer
FRC-ECEyesThe lower freq. 16 channels are ready. Still need calibration and signal level adjustmentsJul 14 2009 12:15PM (phillips)Perry PhillipsHeterodyne ECE-32 channelsphillips
G-Side RatiomaticyesGauge installed. Problem with controller - signal noisy.Jul 14 2009 09:11PM (labombard)Brian LaBombardG-side ratiomatic ionization gaugelabombard,toland
Glow Dischargeno6/10/09: Paddles meggered at 1000 v to machine ground (>300 Mohm) prior to closing the vacuum chamber. Plugs for Power Supply and Controls Unplugged and Red Tagged, Safe for In-Vessel AccessJun 10 2009 01:47PM (dekow)Jim Irby1 kV, 5 A, glow discharge systemdekow,dterry,irby
GPCyesOperational.Jul 28 2009 04:23PM (hubbard)Amanda HubbardECE Polychromaterhubbard,schmidt
GPC2yesMost channels operational.Jul 28 2009 04:23PM (hubbard)Amanda HubbardECE Polychromaterhubbard,schmidt
GPIyesThe Xpt-view, the midplane-view cameras are operational. The innerwall GPI (coupled to the fast-diodes) is available. Jul 01 2009 09:45AM (terry)Jim TerryGas Puff Imagingterry,zweben
H/Dyesposes no safety hazard for people working around the machineJun 18 2009 01:04PM (marmar)Earl MarmarH/D Ratiomarmar
HEATnoDisconnect switch is open, reg tagged and locked. Shunt Trip Breaker is opened. Safe for in-vessel work.Jun 04 2008 12:24PM (dekow)Gary Dekow - Machine Heaters -burke,dekow
Hirex JryesHirex-Jr has been installed and testedJun 17 2009 11:54AM (rice)John RiceHigh Resolution X-Rayince,rice
Hirex Sryescurrently only one detector is operational, off-axis He-like argon emissionJul 14 2009 10:01AM (rice)John RiceHigh Resolution X-Rayince,rice
HXRnoIn safe mode (high voltage turned off)May 27 2008 09:19PM (schmidt)Ron ParkerHard X-Ray Arrayparker,schmidt
ICRF D-Antennayesoperational at 80 MHzJul 21 2009 04:49PM (wukitch)Steve WukitchD-port antennawukitch,ylin
ICRF E-Antennayesantenna and FFT operationalJul 21 2009 04:49PM (wukitch)Steve WukitchE-port antennawukitch,ylin
ICRF J-Antennayesavailable for conditioning and testingJul 21 2009 04:50PM (wukitch)Steve WukitchJ-port antennawukitch,ylin
Lower HybridnoBreaker locked and tagged out. Waveguide disassembly started. Open Waveguides have been shorted.May 28 2008 09:47AM (dterry)Ron ParkerLower Hybriddterry,parker,wallaceg
LPInoBeam line removedMay 30 2008 02:09PM (bose)Earl MarmarLithium Pellet Injectorbose,marmar
Ly-alphayesMidplane, WB4-LY, LEDGE-LY all collecting data but processed data not in tree. WB1-LY not attached.Jul 07 2009 01:01PM (mlreinke)Matt ReinkeLyman alpha cameraslabombard,mlreinke
McPhersonyesCollecting spectra but control system problem is not reporting voltages to treeJul 28 2009 10:00AM (mlreinke)Jim TerryVUV Spectrometermlreinke,terry
MichelsonyesOperational. Recalibrated 7/27/09.Jul 28 2009 04:22PM (hubbard)Amanda HubbardECE Te Profileshubbard,schmidt
MKSyesGauges are on. B-bottom is not operating - bad sensor head?Jul 14 2009 09:12PM (labombard)Brian LaBombardBaratron pressure gaugeslabombard
MLPnoSystem is in edge lab. Version 2 drivers ready to test. Needs a student to help work on it.Jul 14 2009 09:20PM (labombard)Brian LaBombardMirror Langmuir Probe Electronics Systemlabombard
MSEnoAs of 6/10/09, MSE is calibrated & ready to go. Awaiting DNB.Jun 10 2009 10:34AM (sscott)Steve ScottMotional Stark Effectjinseok,sscott
NeutronsyesNeutron detectors are calibrated and ready to go. Voltages will be turned on prior to first plasma.Jun 10 2009 10:35AM (fiore)Catherine FioreNeutron Detectorsfiore
Neuts and HardsyesOperational --- Uncalibrated and needs to be positioned at portJun 25 2009 05:08PM (irby)Jim IrbyX-Ray/Neutron Detector at K-Horirby
NINJAnoCapillaries were tested in-vessel. Plenum has a leak and needs fixing.Jul 14 2009 09:14PM (labombard)Brian LaBombardNINJA gas pufflabombard,terry
PCIyesSystem is operable. Channels 7 and 9 (of 32) are dead.Aug 05 2009 02:48PM (edlund)Miklos PorkolabPhase Contrast Imagingarai,edlund,ennever,ntsujii,porkolab
Penning GaugesyesHigh voltage is enabled (on during INIT, off during RECOOL).Jun 30 2009 09:42PM (labombard)Brian LaBombardPenning Ionization Gaugeslabombard
Plasma TVyesWIDE1, WIDE2 (chan 33), DANT, JANT and DIV are operational.Jul 01 2009 09:46AM (terry)Jim TerryVideo of plasma via several camerasdekow,irby,terry,wolfe
PolarimeternoSafe for Machine EntrySep 14 2007 12:17PM (irby)Jim IrbyC-Mod Polarimeterirby
Power - Alternator Air SwitchyesChecked and Operational as of 06/18/09Jun 19 2009 08:04AM (irby)Gary Dekowfeeds all the other suppliescochran,dekow,dterry,irby
Power - PEIyesOperational ---- ECDC running as required Jun 19 2009 08:06AM (irby)Gary DekowPEI Systemcochran,dekow,dterry,irby
Power - TMXyesChecked out and ready for Magnet Tests as of 06/18/09Jun 19 2009 08:07AM (irby)Gary DekowEf2s,. EFCs and A-Coilsbyford,cochran,dekow,dterry,irby
Power SystemsyesChecked out and ready for Magnet Tests as of 06/18/09Jun 19 2009 08:07AM (irby)Jim IrbyC-Mod Magnet Suppliesbyford,cochran,dekow,dterry,irby
Probe Array - ISDyesArray is operational with new cPCI data system. Probe 14 has open circuit.Jul 14 2009 09:17PM (labombard)Brian LabombardInner Lower Divertor Probe Arraylabombard
Probe Array - LHnoLH launcher not installed. Cables are unplugged at the A-port rack.Jul 14 2009 09:16PM (labombard)Brian LaBombardLower Hybrid Probe Arraylabombard
Probe Array - OSDyesArray is operational with new cPCI data system.Jul 14 2009 09:16PM (labombard)Brian LaBombardOuter Lower Divertor Probe Arraylabombard
Probe Array - UDIVyesArray is operational with new cPCI data system. Probe 13 has a bad cable (open).Jul 14 2009 09:17PM (labombard)Brian LaBombardUpper Divertor Probe Arraylabombard
ReflectometeryesAs of 7/21/09, all channels are operational (50, 60, 75, 88, 88usb, 88lsb, 110, 140 and 110-140 swept frequency)Aug 04 2009 11:20AM (dominguez)Earl MarmarReflectometerdominguez,marmar
Scanning Probe - ASPyesProbe is operational. Needs plasma conditioning.Jul 14 2009 09:18PM (labombard)Brian LaBombardA-Port Scanning Probelabombard
Scanning Probe - FSPyesProbe is operational. Needs plasma conditioning.Jul 14 2009 09:18PM (labombard)Brian LaBombardF-Port Scanning Probelabombard
Scanning Probe - WASPyesSystem connected to A-port WASP. Needs plasma testing.Jul 14 2009 09:19PM (labombard)Brian LaBombardInner Wall Scanning Probelabombard,nsmick
SparkeryesSparker now at K-Hor. Set for 100 uA of current. Will up to 200 uA before first plasmaJun 18 2009 01:01PM (irby)Jim IrbyField Emission Preionization for C-Moddekow,irby,parkin
TCIyesSystem restarted and aligned. Several chords available including NL04. Density Feedback available. Ready for plasma.Jun 18 2009 09:15AM (murray)Jim IrbyTwo-Color Interferometerirby,murray
TS - Coreyes2 lasers working. 15 spatial channels operational. Initial (NOT final) Te calibration applied. ***No ne calibration yet*** Aug 05 2009 08:44AM (jwhughes)Jerry HughesCore Thomson scatteringjwhughes,yma,zhang
TS - EdgeyesOperational, Te calibration is thought to be good. Density is ***uncalibrated***Aug 11 2009 02:31PM (jwhughes)Jerry HughesMillimeter resolution edge Thomson scatteringjwhughes,yma,zhang
Vispecno350 and 670 nm, 4 spatial channelsNov 28 2007 09:58AM (agraf)Alex GrafVisible Spectrometeragraf
XTOMOyescables attached, DAQ test run, ready for first plasmaJun 17 2009 03:42PM (mlreinke)Bob GranetzX-Ray Tomographygranetz,mlreinke