Miniproposals

Miniproposal: 355 Date Filed: 11/12/2003 Title: ICRF Testing & Conditioning First Author: Steve Wukitch Session Leader: Steve Wukitch (shots 1-16)

Engineering Operator Run Comment

MP#355 ICRF Startup, conditioning, MP#488 E-Port Fast Ferrite Tuner

Session Leader Plans

Entered: Dec 13 2007 09:13:19:127AM

Author: Steve Wukitch

SL Plan Start with 1071212029 (0.8 MA, 5.4 T, 1.0e20m-2, upper single null) Continue where we left off yesterday with the cryopump controlling the H/D to ~10%; overlapping D and E antenna to test fft operation; and condition the antennas and machine. We also will investigate the limits on J antenna. 1. Overlap D and E antenna to condition antennas and limits of FFTs in USN discharges. J antenna will be operated separately to establish its limits. The LH will be injecting power as well but will need to monitor impurity injections. 2. Time permitting we will investigate LSN discharges to condition other surfaces. We will modify discharge parameters as deemed necessary. will be monitoring voltage and power limits will adjust density and current to avoid J neutral pressure limit -

Physics Operators Plans

Entered: Dec 12 2007 04:55:27:253PM

Author: Bill Rowan

MP#355 ICRF startup and conditioning MP#488 Fast ferrite tuner on E-port Session leader: Wukitch Physics operator: Rowan Lower Hybrid Conditioning as compatible with ICRF Operation ----------------- Engineering Setup ----------------- Run begins at 09:00 and ends at 17:00 Power systems as on: 1071212029 (1 MA, 5.4 T, 0.8e20/m^2, USN) 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 NINJA with 10 psi D2 DISABLED Enable gatevalves and shutters: ECE, VUV, DNB, Z-bolo Torvac gatevalve toggle (yes/no): yes Boronization(yes/no): no Overnight ECDC (yes/no): yes ICRF(yes/no): yes LH(yes/no): yes DNB(yes/no): if available Cryopump (yes/no): yes Vessel temperature: 60/60/60 ------------------------------ ECDC Parameters ------------------------------ gas and pressure: D2 at 2e-4 Torr sweep: 44/45/103 cm scan: 20/120 s

Session Leader Summaries

Entered: Dec 13 2007 03:37:15:963PM

Author: Steve Wukitch

Run Summary Although the shot total was limited by a number of issues (see below), D and E antennas were operated up to 1.5 MW simultaneously in USN discharges. With the cryopump on, the H/D was managed relatively well, was rising to 15% during a pulse and starting near 10%, and we obtained reasonable heating with 4 MW total power. The FFT performance was reasonable but there appears to be a power level at which the solution is off significantly. We are still investigating whether this is a control problem or hardware feature. J antenna is still lagging behind the D and E in terms of conditioning and our next step is to measure the RH of the 6" coax lines and modify the telfon spacers to allow for more effective pumping and purging. An interesting observation is that the density in front of the LH coupler changed dramaticly between 011 and 012. Discharge 011 is USN, 0.8 MA and 012 is LSN, 1.0 MA. The H/D is ~12% in 011 and ~14% in 012 which will not significantly change the single pass absorption. We will have to look into this a bit because it will partially explain why ICRF operation is relatively more successful at injecting high power in USN compared to LSN.

Physics Operator Summaries

Entered: Dec 13 2007 07:21:34:033PM

Author: Bill Rowan

The run consisted of 16 shots in LSN and USN configurations. The shot rate was limited by problems with thermocouple instrumentation, EF3 power supply, and ICRF fault instrumentation. Shot 1071212029 was loaded as the model for USN operation. Shot 1071212013 was loaded as the model for LSN operation. Plasmas breakdown and current rise were reliable. The breakdown fields were not adjusted at all during the day. Only the prefill was adjusted to provide appropriate pressure with and without the cryopump. The cryopump operated on all 14 shots on which it was requested. Scorecard 13 plasmas USN:002,003,005,006,007,008,009,010,011 LSN: 012,013,014,016 01 Fizzle 015. 01 dud 001 01 engineering failure 004 (EF3) ------- 16 total

Session Leader Comments
Dec 13 2007 09:16:06:360AM	1071213001	Steve Wukitch	no plasma
Dec 13 2007 09:22:28:770AM	1071213002	Steve Wukitch	002 Bt=5.4 T, Ip=0.8 MA, nl04= 0.8e20 /m^2, USN result: plasma D: ran 0.48 MJ E: did not run J: 5 faults 0.1 cryo cold next: why no E?
Dec 13 2007 10:13:57:040AM	1071213003	Steve Wukitch	003 Bt=5.4 T, Ip=0.8 MA, nl04= 0.8e20 /m^2, USN result: plasma D: ran 2 faults 0.8 MJ E: did not run J: 4 faults 0.11 cryo cold next: cell access to find false fault found bad contact and have "fix" it
Dec 13 2007 11:56:32:080AM	1071213005	Steve Wukitch	005 Bt=5.4 T, Ip=0.8 MA, nl04= 0.8e20 /m^2, USN result: plasma D: ran 0.85 MJ E: ran 0.71 MJ J: 5 faults 0.11 MJ cryo cold
Dec 13 2007 11:53:30:517AM	1071213006	Steve Wukitch	006 Bt=5.4 T, Ip=0.8 MA, nl04= 0.8e20 /m^2, USN result: plasma D: ran 0.91 MJ E: ran 0.6 J: 8 faults 0.74 cryo cold next: repeat
Dec 13 2007 11:50:28:890AM	1071213007	Steve Wukitch	007 Bt=5.4 T, Ip=0.8 MA, nl04= 0.8e20 /m^2, USN result: plasma D: ran 0.91 MJ E: ran 9 faults 0.5 MJ J: 7 faults 0.77 MJ cryo cold next: increase D pulse and increase E power
Dec 13 2007 12:25:39:280PM	1071213008	Steve Wukitch	r008 Bt=5.4 T, Ip=0.8 MA, nl04= 0.8e20 /m^2, USN esult: plasma D: ran 7 faults 1.32 MJ E: ran 6 faults 0.81 MJ J: ran 7 faults 0.9 MJ cryo cold next: repeat
Dec 13 2007 03:23:01:880PM	1071213009	Steve Wukitch	009 Bt=5.4 T, Ip=0.8 MA, nl04=0.8e20 /m^2, USN, gap 1.5 cm D: ran 9 faults 0.74 MJ E: ran max faults 0.03 MJ J: ran max faults 0.51 MJ cryo cold
Dec 13 2007 03:22:53:020PM	1071213010	Steve Wukitch	010 Bt=5.4 T, Ip=0.8 MA, nl04=0.8e20 /m^2, USN, gap 1.5 cm D: ran 1 faults 1.15 MJ E: ran 4 faults 0.8 MJ J: ran 9 faults 0.88 MJ cryo cold
Dec 13 2007 03:22:30:490PM	1071213011	Steve Wukitch	011 Bt=5.4 T, Ip=0.8 MA, nl04=0.8e20 /m^2, USN, gap 1.4 cm D: ran 1 faults 1.15 MJ E: ran 4 faults 0.5 MJ J: ran 15 faults 0.3 MJ cryo cold
Dec 13 2007 03:10:13:640PM	1071213012	Steve Wukitch	012 Bt=5.4 T, Ip=1.0 MA, nl04=0.8e20 /m^2, LSN, gap 1 cm D: ran 1 faults 0.8 MJ E: ran max faults 0.48 MJ J: ran max faults 0.22 MJ cryo cold
Dec 13 2007 03:05:44:000PM	1071213013	Steve Wukitch	013 Bt=5.4 T, Ip=1.0 MA, nl04=0.8e20 /m^2, LSN, gap 0.9 cm D: ran 0.94 MJ E: ran max faults 0.14 MJ J: ran max faults 0.25 MJ cryo cold
Dec 13 2007 03:05:22:233PM	1071213014	Steve Wukitch	014 Bt=5.4 T, Ip=1.0 MA, nl04=0.8e20 /m^2, LSN, gap 0.9 cm D: ran 1 faults 0.9 MJ E: ran max faults 0.12 MJ J: ran max faults 0.13 MJ cryo off
Dec 13 2007 02:58:04:200PM	1071213015	Steve Wukitch	fizzle
Dec 13 2007 02:57:51:073PM	1071213016	Steve Wukitch	early disruption

Physics Operator Comments
Dec 13 2007 08:41:26:160AM		Bill Rowan	Gate valve set to toggle from the first shot. The closed time is set to 300 s Loaded shot 1071212029 (1 MA, 5.4 T, 0.8e20/m^2, USN)
Dec 13 2007 09:15:24:050AM	1071213001	Bill Rowan	001. Dud cryo pump was on Next shot. Increase PG4 by 5 ms
Dec 13 2007 09:27:02:193AM	1071213002	Bill Rowan	002. good shot. cryo on. cryo will be on until otherwise noted Next shot. LH on at 0.7 s
Dec 13 2007 10:23:32:827AM	1071213003	Bill Rowan	003. Plasma. Ran through the rampdown Next shot. Cell access: 40 minutes
Dec 13 2007 10:40:46:940AM	1071213004	Bill Rowan	004. Dud. EF3 breaker pulled out. Next shot. Power room access: 20 minutes increased prefill by 2 ms to 32 ms. on the previous two shots the prefill has dropped back to 0.04 mT
Dec 13 2007 10:55:42:587AM	1071213005	Bill Rowan	005. Plasma Next shot. No DPCS changes
Dec 13 2007 10:58:39:747AM	1071213005	Bill Rowan	enable ar. bside lower
Dec 13 2007 11:25:43:943AM	1071213006	Bill Rowan	006. Plasma Next shot. No PCS changes Delays due to cooling. TF coil peak stuck at -159
Dec 13 2007 11:57:48:893AM	1071213007	Bill Rowan	007. Plasma Next shot. cell access to check cooling: 25 minutes A thermocouple measurement discrepancy identified
Dec 13 2007 12:23:37:467PM	1071213008	Bill Rowan	008. Plasma Next shot. Reduced prefill to 30 ms
Dec 13 2007 12:38:57:487PM	1071213009	Bill Rowan	009. Plasma Next shot. No pcs changes
Dec 13 2007 12:51:49:070PM	1071213010	Bill Rowan	010. Plasma Next shot No PCS changes
Dec 13 2007 01:06:29:107PM	1071213011	Bill Rowan	011. Plasma Next shot. Switch to LSN Use shot 1071212013 for LSN Loaded 1071212013 Loaded segment 1 from 1071213011
Dec 13 2007 01:30:14:040PM	1071213012	Bill Rowan	012. Plasma. LSN (5.4T, 1 MA, 0.8e+20) Next shot. No pcs changes
Dec 13 2007 01:30:23:710PM	1071213013	Bill Rowan	013. Plasma Next shot. No dpcs changes
Dec 13 2007 01:45:09:590PM	1071213014	Bill Rowan	014. Plasma Next shot. Cryo pump off to provide comparison discharges No dpcs changes
Dec 13 2007 02:00:08:533PM	1071213015	Bill Rowan	015. Fizzle Next shot. prefill to 16 ms gate valve closed 1200 s after the shot
Dec 13 2007 02:11:50:070PM	1071213016	Bill Rowan	016. Plasma. Disruption at 0.6 s Last shot.

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	09:02:22:123AM	Plasma	Ok
2	09:16:38:643AM	Plasma	Ok
3	09:29:31:117AM	Plasma	Ok
4	10:17:45:510AM	Plasma	Ok	EF-3 breaker opened in pulse
5	10:45:57:303AM	Plasma	Ok
6	11:07:07:030AM	Plasma	Ok
7	11:29:09:070AM	Plasma	Ok
8	12:12:22:307PM	Plasma	Ok
9	12:30:25:810PM	Plasma	Ok
10	12:43:11:723PM	Plasma	Ok
11	12:59:40:573PM	Plasma	Ok
12	01:13:11:157PM	Plasma	Ok
13	01:26:19:850PM	Plasma	Ok
14	01:39:31:387PM	Plasma	Ok
15	01:54:11:860PM	Plasma	Ok
16	02:08:43:287PM	Plasma	Ok

System Availability

Dec 13 2007 09:01:57:293AM

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 Diode 2pi working fine, foil 2pi still in the same poor condition as last campaign. Outboard miidplane AXUV fine. Midplane foils working fine, but need calibration. 2D AXUV arrays are being digitized but need further debugging and calibration. Dec 09 2007 06:51PM (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 no   Jan 14 2007 02:06PM  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 Chs 17-32 working - low freq. mixer being repaired Nov 26 2007 11:41AM (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 Detectors cooled 12/4. Signals on all but Chs 9. Recalibrated 12/4. Dec 05 2007 09:29AM (hubbard) Amanda Hubbard ECE Polychromater hubbard,schmidt GPC2 yes Detectors cooled 12/5. Most channels operational. Dec 05 2007 09:30AM (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 no   Oct 12 2007 12:41PM (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 yes Working fine. Nov 29 2007 01:36PM (mlreinke) Jim Terry VUV Spectrometer mlreinke,terry Michelson yes Working, low speed to start out. Dec 04 2007 09:27AM (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. Two of 10 channels are dead. Nov 20 2007 08:26PM (sscott) 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 no Both CO2 and HeNe Lasers are disabled----- safe for machine entry. Sep 14 2007 03:21PM (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 no System off Sep 14 2007 02:46PM (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 no System is being reassembled following manned access. Availablity during pre-physics phase will be limited. Nov 26 2007 02:58PM (jwhughes) Jerry Hughes Core Thomson scattering jwhughes,yma TS - Edge no System being reassembled following manned access. Availability will be limited during pre-physics portion of campaign. Nov 26 2007 02:59PM (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 no cPCI digitzer problems being debugged Dec 09 2007 06:49PM (mlreinke) Bob Granetz X-Ray Tomography granetz,mlreinke