Miniproposals

Miniproposal: 534 Date Filed: 2/21/2008 Title: Foil/AXUV Bolometer Calibration in Helium First Author: Matt Reinke Session Leader: Matt Reinke (shots 1-12)

Engineering Operator Run Comment

MP 534: Foil/AXUV Bolometer Calibration in Helium (1/2-day AM) MP#517 "E

Session Leader Plans

Entered: Mar 25 2008 03:03:51:973PM

Author: Matt Reinke

MP 534: Foil/AXUV Bolometer Calibration in Helium (1/2-day AM) SL: ML Reinke PO: IH Hutchinson The main purpose of this experiment is create radiative plasmas with a variety of impurities to cross-calibrate the foil and AXUV bolometers. A second goal is to evaluate the effectiveness of N V emission in polluting the edge lyman alpha measument. Diagnostics: All Te and n_e profile diagnostics (GPC1 and GPC2, edge/core TS, TCI, FRC). All impurity spectroscopy (HIREXSR, NeSOX, bolometry, VUV, CHROMEX) DNB: 150 ms on 150 ms off at max beam current. Cryopump: Needed on first shot ICRF: 0.4-1.5 seconds @ 3 MW (first few shots to tune up) Plan (all gas puffs use B-SIDE lower): A) establish USN ICRF heated L-mode like 1080116014. ICRF up to max power 0.4-1.5 seconds. No gas puffing. Measure Mo-dominated emissivity from foils and AXUV. B) turn on Ne gas puff from 0.3-1.3 seconds at 3.0 psi. Adjust pressure as necessary to get steady, radiative discharge. C) switch to Ar gas puff at 1.5 psi. Adjust pressure as necessary to get steady, radiative discharge. D) switch to Kr gas puff at 0.5 psi. Adjust pressure as necessary to get steady, radiative discharge. ****CELL ACCESS TO SWITCH GAS BOTTLES IF ON SCHEDULE**** E) switch to Xe gas puff at 0.25 psi. Adjust pressure as necessary to get steady, radiative discharge. F) switch to N gas puff at 4.0 psi. Adjust pressure as necessary to get steady, radiative discharge.

Entered: Mar 25 2008 04:37:16:630PM

Author: Marco Ferrara

Detailed instructions for the second half run, MP#517 "Experimental test of a Kalman filter for the vertical position" 1) load shot 1071211009 as the target equilibrium (k=1.7, control gains to their nominal values P=4 D=6, one of the shots from the similar experiment run in December). 2) Click on OBSERVERS, then on dpcs_kalmanfull2_zcur. A widget will open. Remove this procedure. 3) Click on OBSERVERS, then on New. Choose dpcs_kalman_zcur from the scroll-down menu. 4) Click on OBSERVERS, then on dpcs_kalman_zcur. A widget will open. Fill out the fields like follows: - write {ZCUR_phys_noise:16e6,Chopper_Gain:200.} in Parameters. Check the box for IDL Value. - write [0.8,2.0] in Switch Times. - write 10 in Wires. Then click Apply and Dismiss. Double-check that it took the inputs by re-opening the widget. 5) Run the shot. In this case the Kalman will output on wire 10 so that we can monitor the output before operating the filter in the loop (1-2 shots). 6) Change the number in Wires from 10 to 3. This will switch the output of the filter to the fast vertical control wire: the Kalman is now in the loop. 7) Run the shot and check the results (1-2 shots). 8) If everything looks fine, push the elongation, until disruption (1-2 shots). 9) Now increase the derivative gain from D=6 to 8 or 10. The rationale here is that without noise we might be able to increase the derivative gain and maybe control higher elongations (2-3 shots). 10) Go back to the initial derivative gain (D=6) and lower the proportioanl gain (P=2.5) to excite the low frequency vertical resonance. Here we want to see how the filter behaves when the real system follows a dynamic that is not included in the model of the filter (2-3 shots). 11) End of the half run. Total 7-12 shots.

Physics Operators Plans

Entered: Mar 25 2008 02:04:24:617PM

Author: Ian Hutchinson

Run begins at 09:00 and ends at 17:00 Power systems as on: 1080325 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 3 psi Neon Hybrid DISABLED (PG1) leave B-side upper as is Hybrid DISABLED (PG2) fill B-main (C-side) with 40 psi Helium 4 Hybrid ENABLED (PG3) fill NINJA with 10 psi D2 DISABLED Enable gatevalves and shutters: ECE, VUV, DNB, Z-bolo Torvac gatevalve toggle (yes/no): no Boronization(yes/no): no Overnight ECDC (yes/no): yes ICRF(yes/no): yes LH(yes/no): no DNB(yes/no): yes Cryopump (yes/no): yes Vessel temperature: 35/35/35 --------------- ECDC Parameters --------------- gas and pressure: Helium at 5e-5 Torr sweep: 44/45/103 cm scan: 20/120 s

Session Leader Summaries

Entered: Mar 26 2008 09:36:41:200AM

Author: Alex Graf

As of shot 2. Vispec is looking at Ne VIII at 433 nm. The view is the outerwall poloidal (4 channels spread evenly inside the separatrix) Clear Stark broadening on D-gamma during RF. So much that the wing may contribute to the Ne line when present.

Entered: Mar 26 2008 01:22:20:403PM

Author: Matt Reinke

We got the the target discharge developed and one neon shot before everything went wrong. After a massive disruption on shot 005 there was nothing but fizzles. The outgassing from the antennnas makes the little data that was collected suspect. See the PL_SUMMAY for the post-mormtem. By the time the run switchover came around, a full length plasma had yet to be made.

Physics Operator Summaries

Entered: Mar 26 2008 04:07:14:200PM

Author: Ian Hutchinson

Summary _______ Started ok with He plasmas. At or about shot 4 a leak opened up. Shot 4 had a disruption caused by a big injection. Shot 5 was a very ugly runaway shot that saturated the cameras and crunched on the inner wall. Thereafter we had nothing but fizzles. ECDC in He or D2 was unavailing. The last attempt, shot 24, gave a current up to nearly 100 kA for about .1s, with lots of runaways. At that point the run was terminated and a visual inspection called for. Scorecard: __________ 6 plasmas 18 fizzles. (Average shot to bits.)

Session Leader Comments
Mar 26 2008 09:15:27:823AM	1080326001	Matt Reinke	First shot, loading 1080116014 and tweaking for He plasma. No impurity puff, trying to get the Mo background and make sure everything is working. RESULT: RF=3 MW, a little hashy. Density WAY overshoots early and SS nl04=1.3. Radiation seems low for 3 MW. NEXT: Repeat
Mar 26 2008 09:29:56:027AM	1080326002	Matt Reinke	Better. The density is more controlled, but still higher than desired. E-Port trips. LYMID during RF pulse is 10 kW/m^2, likely ANT outgassing. Next: try and lower density, and get RF working.
Mar 26 2008 09:42:28:290AM	1080326003	Matt Reinke	Good shot minus the injections. RF is great at 3.3 MW out of just D & E. Start on the impurity puffing. NEXT: 3.1 psi of Ne from 0.3-1.3
Mar 26 2008 10:00:36:150AM	1080326004	Matt Reinke	Starts to get steady, but appears that a high-Z injection at 0.76 (on x-rays) kills the plasma. Doesn't appear to be Mo based on HIREXSR. Probably not Ne puff, which seems about right. NEXT: Repeat.
Mar 26 2008 10:11:58:540AM	1080326005	Matt Reinke	Horrible runaway shot with pyrotechnics (K-Port LIM?) NEXT: Repeat 004

Physics Operator Comments
Mar 26 2008 09:04:31:167AM		Ian Hutchinson	Load from 1080116014. Load segment 1 from 1080325030. Segment 4 is the active segment. That says it is upper null. Remove Pulse Gas 1 and 2 puffs in PCS. Remove the step from the nl04 program. Load. Matt announces he wants cryopump. Increase fill to 50ms. Load
Mar 26 2008 09:26:01:353AM	1080326001	Ian Hutchinson	Plasma to rampdown. Crazy high density but it survives. Delay early nl04 rise.
Mar 26 2008 09:43:28:933AM	1080326002	Ian Hutchinson	Plasma to rampdown. Avoided marfe. Only 1.7MW RF. Lower nl04 to .9 from 1.1.
Mar 26 2008 09:52:08:073AM	1080326003	Ian Hutchinson	Plasma to rampdown. 3.3MW. NL04 got 1.1e20. Injections but otherwise good. Program in gas puff PG1 from .3 to 1.3s. Fill puff to 46ms.
Mar 26 2008 10:01:02:167AM	1080326004	Ian Hutchinson	Plasma disrupts at .76s. Looks like a big injection.
Mar 26 2008 10:15:33:183AM	1080326005	Ian Hutchinson	Plasma to .7s. Horrid runaway shot provoked by very strange startup. Don't know what to do. Do nothing.
Mar 26 2008 10:58:10:040AM	1080326006	Ian Hutchinson	Found there is a leak. Possibly the cause of the past shot problem. Regen the cryopump. Base pressure at 1.5e-6 prior to recool. Don't understand the various pressures we are seeing. Eventually gets to 5e-7 so try a shot. Fizzle. Lots of Carbon light and very little current. Br offset to -.0003 from zero.
Mar 26 2008 11:11:04:450AM	1080326007	Ian Hutchinson	Fizzle. Very little current. Fill puff to 40ms.
Mar 26 2008 11:42:35:917AM	1080326008	Ian Hutchinson	Fizzle. Fill was even higher, presumably because the pump was not working at full speed. ECDC in He for ten minutes. Purge cryopump nitrogen (as well as He). Recool pump.
Mar 26 2008 11:57:22:307AM	1080326009	Ian Hutchinson	Fizzle. Cryopump did not pump so fill was way too high. Turn off cryopump. Disable b-side lower (neon). No RF. Br offset to -.0005
Mar 26 2008 12:10:24:323PM	1080326010	Ian Hutchinson	Fizzle. Fill puff to 13ms. Br offset to 0.
Mar 26 2008 01:17:41:340PM	1080326011	Ian Hutchinson	Fizzle. 30 minute ECDC in Deuterium. We will now give up on Helium plasmas because the first half of the run is just about done with. Br offset now zero. Fill puff 13ms. nl04 demand to .8e20.
Mar 26 2008 01:36:57:903PM	1080326012	Ian Hutchinson	Fizzle. Weak current. No pump-out. ICEF4 to -1350 from -1340A.
Mar 26 2008 01:45:38:293PM	1080326013	Ian Hutchinson	Fizzle. ICEF4 to -1355 from -1350.
Mar 26 2008 01:56:51:810PM	1080326014	Ian Hutchinson	Fizzle. CII light is just over .02. This is higher than the first shot of the campaign on Mar 16 2007. Br offset to -.0003
Mar 26 2008 02:10:25:107PM	1080326015	Ian Hutchinson	Fizzle. Somewhat more gas current. Rcur offset to 700 from 1000.
Mar 26 2008 02:21:05:793PM	1080326016	Ian Hutchinson	Fizzle. Breakdown slightly later. ICEF4 to -1345 from -1355. Rcurr offset to 500.
Mar 26 2008 02:36:20:730PM	1080326017	Ian Hutchinson	Fizzle. ICEF4 to -1335 from -1345. rcur offset to 700.
Mar 26 2008 02:51:20:123PM	1080326018	Ian Hutchinson	Fizzle. ICEF4 to -1345. rcur offset to 800.
Mar 26 2008 02:56:42:077PM	1080326019	Ian Hutchinson	Fizzle. Br offset to zero, from -.0003.
Mar 26 2008 03:11:43:077PM	1080326020	Ian Hutchinson	Fizzle. Br offset to -.0005 Fill puff to 11ms.
Mar 26 2008 03:25:29:950PM	1080326021	Ian Hutchinson	Fizzle. Fill puff to 20ms.
Mar 26 2008 03:42:56:433PM	1080326022	Ian Hutchinson	Fizzle. Base pressure is about 7e-7, not very low. Carbon still high. Reload segment 1 from shot 1, in interests of showing I haven't done something stupid. Set fill puff to 14ms.
Mar 26 2008 03:53:50:637PM	1080326023	Ian Hutchinson	Fizzle. Br offset to -.0007
Mar 26 2008 04:01:27:497PM	1080326024	Ian Hutchinson	Plasma to .1s. Extremely ugly 100kA shot with runaways.

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	09:03:46:620AM	Plasma	Ok
2	09:17:57:730AM	Plasma	Ok
3	09:33:00:823AM	Plasma	Ok
4	09:50:05:183AM	Plasma	Ok
5	10:02:53:213AM	Plasma	Ok
6	10:39:19:950AM	Plasma	Ok
7	10:55:22:450AM	Plasma	Ok
8	11:08:15:713AM	Plasma	Ok
9	11:38:32:073AM	Plasma	Ok
10	11:51:48:667AM	Plasma	Ok
11	12:04:14:650PM	Plasma	Ok
12	01:12:44:013PM	Plasma	Ok
13	01:25:14:013PM	Plasma	Ok
14	01:38:00:903PM	Plasma	Ok
15	01:52:41:403PM	Plasma	Ok
16	02:04:59:467PM	Plasma	Ok
17	02:17:39:840PM	Plasma	Ok
18	02:29:57:123PM	Plasma	Ok
19	02:42:19:090PM	Plasma	Ok
20	02:54:44:607PM	Plasma	Ok
21	03:07:12:137PM	Plasma	Ok
22	03:19:33:310PM	Plasma	Ok
23	03:32:15:387PM	Plasma	Ok
24	03:44:42:090PM	Plasma	Ok

System Availability

Mar 26 2008 09:03:38:103AM

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,rowan Bolometers yes Diode 2pi working fine, foil 2pi being low-pass filtered to remove noise. Outboard miidplane AXUV has a grounded channel which is disrupting the whole array OFFLINE for now. Midplane foils working fine, but need to fill tree with calibrations. 2D AXUV arrays are being digitized but need further debugging and calibration. Mar 14 2008 11:09AM (mlreinke) Matt Reinke Bolometers hutch,mlreinke Boronization no First Boronization 5/9/07 Bottle has been removed from the cell Sep 14 2007 12:42PM (dekow) Jim Irby Boronization dekow,irby CNPA yes Single channel CNPA available as of 12/1707 Dec 17 2007 05:48PM (parker) Ron Parker Compact Neutral Analyzer parker Cryopump - Upper Divertor yes Cryopump is operational Dec 11 2007 10:13AM (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=[74.2:86.3]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. Nov 27 2007 10:21AM (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 Nov 26 2007 04:23PM (terry) Jim Terry Balmer Alpha Monitor irby,terry,wolfe Dalsa yes optics repaired, camera re-installed, and view has been re-calibrated Nov 27 2007 09:54AM (marmar) Earl Marmar Visible Bremsstrahlung marmar Disruption Mitigation no   Nov 20 2007 10:47PM (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 DNB no   Nov 20 2007 10:47PM (granetz) Robert Granetz Diagnostic Neutral Beam beals,granetz FRC-ECE yes 16 Channels now working - low freq. side - outer Rmids Feb 19 2008 09:56AM (phillips) Perry Phillips Heterodyne ECE-32 channels phillips G-Side Ratiomatic yes Gauge is operational and calibrated against G-side MKS on shot#1071127002 Nov 27 2007 01:25PM (labombard) Brian LaBombard G-side ratiomatic ionization gauge labombard,toland GPC yes All 9 channels operational as of new year. Jan 03 2008 09:31AM (hubbard) Amanda Hubbard ECE Polychromater hubbard,schmidt GPC2 yes Most channels operational. Jan 02 2008 12:22PM (hubbard) Amanda Hubbard ECE Polychromater hubbard,schmidt GPI no Neither the Xpt-view nor the midplane-view camera is operational. Nov 26 2007 04:25PM (terry) Jim Terry Gas Puff Imaging terry,zweben H/D yes Should be operational for the FY08 campaign Nov 27 2007 09:54AM (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 no Be Window has a leak and so the gate valve is closed Nov 23 2007 12:50PM (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 available (quarter-wave transformer for pre-matching) Dec 11 2007 09:01AM (ylin) Steve Wukitch D-port antenna wukitch,ylin ICRF E-Antenna yes available (with FFT for automatical matching) Dec 11 2007 09:01AM (ylin) Steve Wukitch E-port antenna wukitch,ylin ICRF J-Antenna yes normally in [0,pi,pi,0] phase for heating. current drive phase available if requested. Dec 11 2007 09:03AM (ylin) Steve Wukitch J-port antenna wukitch,ylin Lower Hybrid yes Body I Fault Circuits Repaired and tested. High power tests completed Dec 05 2007 06:40PM (dterry) Ron Parker Lower Hybrid dterry,parker LPI yes 1/9/08 Jan 09 2008 03:23PM (bose) Earl Marmar Lithium Pellet Injector bose,marmar Ly-alpha yes Midplane working fine, emissivity profiles being stored in tree, but still need to apply in-vessel calibrations to data. WB1-LY being digitized, but not processed in tree. Dec 09 2007 06:53PM (mlreinke) Matt Reinke Lyman alpha cameras labombard,mlreinke McPherson no Problems with detector. No quantitative line brightnesses possible. Qualitative tasks like impurity identification possible. Feb 15 2008 02:07PM (mlreinke) Jim Terry VUV Spectrometer mlreinke,terry Michelson yes Working, moderate speed for now. Jan 02 2008 01:19PM (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 We are basically awaiting the DNB & its new aperture. MSE itself is OK. Feb 21 2008 08:51AM (jinseok) Steve Scott Motional Stark Effect jinseok,sscott Neutrons yes Voltage is on for the He3 bank. Voltage will be turned on for the global system at the first plasma attempts. Nov 26 2007 08:31AM (fiore) Catherine Fiore Neutron Detectors fiore Neuts and Hards yes calibration unchanged from 2007 campaign Dec 04 2007 08:56PM (irby) Jim Irby X-Ray/Neutron Detector at K-Hor irby NINJA yes All capillaries displayed by the NINJA_CONTROL GUI have been tested. Nov 26 2007 04:26PM (terry) Brian LaBombard NINJA gas puff labombard,terry PCI yes working Feb 29 2008 07:00PM (lianglin) Miklos Porkolab Phase Contrast Imaging edlund,lianglin,ntsujii,porkolab Penning Gauges yes All gauges except B_DivL are operating Nov 27 2007 01:31PM (labombard) Brian LaBombard Penning Ionization Gauges labombard Plasma TV yes WIDE1, WIDE2 (chan 33), DANT, JANT and DIV are operational. Nov 26 2007 04:27PM (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 Probe Array - ISD yes Operational Nov 27 2007 01:40PM (labombard) Brian Labombard Inner Lower Divertor Probe Array labombard Probe Array - LH yes Operational Nov 27 2007 01:40PM (labombard) Brian LaBombard Lower Hybrid Probe Array labombard Probe Array - OSD yes Operational Nov 27 2007 01:41PM (labombard) Brian LaBombard Outer Lower Divertor Probe Array labombard Probe Array - UDIV yes Operational Nov 27 2007 01:41PM (labombard) Brian LaBombard Upper Divertor Probe Array labombard Reflectometer yes System is connected....there have been problems with getting data on the week of 3/18-3/20, but the system seems to be OK for 3/21. channels 50,60,88 and 110 are connected. Mar 21 2008 08:12AM (dominguez) Earl Marmar Reflectometer dominguez,marmar Scanning Probe - ASP yes Operational, but needs to be checked with plasma. Nov 27 2007 01:45PM (labombard) Brian LaBombard A-Port Scanning Probe labombard Scanning Probe - FSP yes FSP is operational Dec 11 2007 10:13AM (labombard) Brian LaBombard F-Port Scanning Probe labombard Scanning Probe - WASP yes A- and K-port WASP electrodes have been replaced/tested. Nov 27 2007 01:44PM (labombard) Brian LaBombard Inner Wall Scanning Probe labombard,nsmick TCI yes CO2 Laser is on --- initial alignment complete Nov 16 2007 01:23PM (irby) Jim Irby Two-Color Interferometer irby,murray TS - Core yes 12 polychromators (#1~8,9,11,13,15), 1 laser. Density is calibrated for YAG1 based on ECE cutoff data taken on Mar11. YAG2 is offline. Mar 14 2008 09:59AM (jwhughes) Jerry Hughes Core Thomson scattering jwhughes,yma TS - Edge yes System is working with 3 out of 4 spectral channels and should be believable for Te>50eV, ne>3e19. Density is calibrated from both Raman scattering in D2 (3/2/08) and from edge ECE cutoffs in high-density H-modes (1080228014). Mar 17 2008 10:26AM (jwhughes) Jerry Hughes Millimeter resolution edge Thomson scattering jwhughes,yma Vispec no 350 and 670 nm, 4 spatial channels Nov 28 2007 09:58AM (agraf) Alex Graf Visible Spectrometer agraf XTOMO yes system operational, but channels have been dying...stay tuned. Mar 14 2008 11:10AM (mlreinke) Bob Granetz X-Ray Tomography granetz,mlreinke