Miniproposals

Miniproposal: 478 Date Filed: 4/27/2007 Title: Joint Experiments with JET on Non-Resonant n=2 Magnetic Breaking First Author: David Howell Session Leader: David Howell (shots 1-18)

Engineering Operator Run Comment

MP478: Joint Experiments with JET on Non-Resonant n=2 Magnetic Breaking

Session Leader Plans

Entered: Jun 20 2007 01:11:35:490PM

Author: David Howell

SL plan: MP478 Goals: To measure the effect of non-resonant n=2 error fields on plasma rotation. Plan: Reference shot 1070531015, with Ip=800kA, nl_04=1.e20, Bt=5.4T. RF power 3MW or highest reliable from 0.6-1.5sec flat. A-coil setup: +Dtop +Dbot +Jtop +Jbot (non-standard n=2). B21_PROJ feedback OFF. Argon puff for HIREX and NINJA D puff for CXRS. DNB for CXRS. Overnight Boronisation. Shot plan: 1. Establish steady H-mode with A-coil off. If needed, change density to achieve reliable RF power and steady H-mode without running into problems with locked modes. Observe the rotation evolution after the H-mode transition. 2. Apply a square wave A-coil current (maximum current) when the plasma has reached steady state in H-mode. Leave the A-coil current on until the end of flat-top. If we find that the plasma rotation has reached a steady value during the A-coil phase then we could consider ramping the A-coil current to zero in further shots in order to observe the plasma rotation spin up again. 3. If no effect then go to backup experiment, else start a scan in A-coil current. Take shots in the order 3.0kA, 2.1 kA, 1kA and then take the decision which intermediate values are desirable based on the results found. 4. At some point, reverse the A-coil polarity and repeat the scan. This requires a cell access. Start the scan at the highest value of A-coil current that gave good results in the +A-coil current scan.

Physics Operators Plans

Entered: Jun 20 2007 01:59:31:307PM

Author: Joseph Snipes

Engineering setup for Thursday 1070621 MP478: Joint Experiments with JET on Non-Resonant n=2 Magnetic Breaking SL: D Howell PO: J Snipes Engineering Setup ------------------ Overnight boronization Run begins at 9:00 and ends early at 15:00 Power systems as on 1070531015 A-coil setup: +Dtop +Dbot +Jtop +Jbot (non-standard n=2). B21_PROJ feedback OFF. Hybrid Enabled Gas setup: --------- Fill B-Top with 6 psi D2 Hybrid enabled (PG4) fill B-side lower with 1 psi Ar Hybrid ENABLED (PG1) leave B-side upper as is Hybrid DISABLED (PG2) fill B-main (C-side) with 40 psi D2 Hybrid enabled (PG3) pump out NINJA and backfill with 8 PSI of D2, then enable. Enable the following gate valves and shutters, assuming no vacuum problems: ECE, VUV, Z-bolo shutters Enable DNB gatevalve if requested by DNB operator. ICRF: FMIT#1,2,4 in RUN-ON by 08:30 - Goals: To measure the effect of non-resonant n=2 error fields on plasma rotation. Plan: Reference shot 1070531015, with Ip=800kA, nl_04=1.e20, Bt=5.4T. RF power 3MW or highest reliable from 0.6-1.5sec flat. A-coil setup: +Dtop +Dbot +Jtop +Jbot (non-standard n=2). B21_PROJ feedback OFF. Argon puff for HIREX and NINJA D puff for CXRS. DNB for CXRS.

Session Leader Summaries

Entered: Jun 21 2007 03:22:24:423PM

Author: David Howell

We managed to get a set of three matched shots with +3.7, 0 and -3.7kA in the A-coils in n=2 configuration (shots 9 10 and 11). These shots had reliable 1.8MW of RF power. Unfortunately, very little difference in rotation was observed between the three shots. This was somewhat unexpected due to the ease of braking the rotation on JET with comparable error fields. This needs to be reconciled with NTV theory. We then changed to a program looking for changes in the locked mode threshold due to the n=2 fields. Shot 16 had -3.7kA A-coil current and shot 17 had 0 A-coil current, but both had locked modes at the same density indicating that the n=2 fields had little effect.

Physics Operator Summaries

Entered: Jun 21 2007 03:02:55:410PM

Author: Joseph Snipes

A much better day than yesterday after overnight boronization. The machine ran very well. All plasma attempts were successful with full length plasmas except for shot 2 that disrupted early due to an impurity injection. Shots 1 and 5 were TF only test shots because several fuses had blown early yesterday and we ran with only one cabinet of the TF. The fuses were replaced after shot 4 today. The run was also successful for the physics as a clear negative result was obtained. See the session leader summary for details. The run ended at 3:00 pm for Bob Childs' retirement party. There were 16 plasmas, 2 power supply tests, no fizzles and no duds. Shot,Duration(s),Ipmax(MA),Result Shot,Duration(s),Ipmax,Result | 01 0.000 0.002 Dud | 02 0.849 0.853 Plasma | | 03 1.934 0.833 Plasma | 04 1.925 0.828 Plasma | | 05 0.000 0.002 Dud | 06 1.926 0.832 Plasma | | 07 1.921 0.831 Plasma | 08 1.899 0.832 Plasma | | 09 1.906 0.829 Plasma | 10 1.911 0.830 Plasma | | 11 1.914 0.830 Plasma | 12 1.913 0.826 Plasma | | 13 1.915 0.829 Plasma | 14 1.826 0.817 Plasma | | 15 1.962 0.829 Plasma | 16 1.659 0.817 Plasma | | 17 1.965 0.819 Plasma | 18 1.701 0.816 Plasma | Date 1070621: 18 shots. 16 plasmas. 0 fizzles. 0 duds. 2 Test shots (Plasma = Ip gt 60.0 kA Dud = H_alpha lt 0.40 V) Total plasma duration: 29.13 s (exceeding -100 kA)

Session Leader Comments
Jun 21 2007 09:48:11:723AM	1070621002	David Howell	First attempt at a steady H-mode reference shot. Bt=5.4T, Ip=800kA, target nl_04=1.e20. Prf=3MW from 0.6sec. A-coils OFF. Disrupted at t=0.84sec, possibly due to an injection. Looks like we made it into H-mode though. No HIREX_SR data because the gate valve was closed.
Jun 21 2007 10:15:15:167AM	1070621003	David Howell	Try again for a steady H-mode reference shot. Bt=5.4T, Ip=800kA, target nl_04=1.e20. Prf=3MW from 0.6sec. A-coils OFF. Good pulse. Steady 2.8MW RF power. q95 ~5. Steady H-mode from 0.8-1.5sec. Lovely flat rotation data from hirex_sr. This is a good reference shot.
Jun 21 2007 11:14:36:540AM	1070621004	David Howell	Repeat with A-coil current 4kA from 0.85 sec, configuration +Dtop +Dbot +Jtop +Jbot (n=2). Only got 2MW of RF, but it was steady until 1.2sec and got us into H-mode. A-coil current reached 3.7kA at ~1.1sec. There seems to be a much smaller effect on the rotation than was expected, but there seems to be a change in the hirex_sr data.. We need a full length RF shot to be sure.
Jun 21 2007 11:51:02:943AM	1070621006	David Howell	Repeat 1070621004, A-coil current 4kA from 0.85 sec, configuration +Dtop +Dbot +Jtop +Jbot (n=2). Try for full length RF. Ragged 2MW rf until 1.1sec, then 1MW. Rotation similar to shot 004.
Jun 21 2007 12:03:11:297PM	1070621007	David Howell	Repeat 1070621004, A-coil current 4kA from 0.85 sec, configuration +Dtop +Dbot +Jtop +Jbot (n=2). Request a bit less RF power, trying for full length RF. Still a drop in RF power at 1sec. There may be some indication from hirex_sr that the rotation decreases steadily after the RF step-down, but it is unclear if this effect is due to the A-coils.
Jun 21 2007 12:19:08:133PM	1070621008	David Howell	Repeat 1070621004, A-coil current 4kA from 0.85 sec, then back to 0kA at 1.3sec. configuration +Dtop +Dbot +Jtop +Jbot (n=2). Trying for full length RF. RF step down at 1sec again. Maybe we can get H-mode without the J port. There is the slightest of hints that the rotation starts to increase again after the A-coil is switched off.
Jun 21 2007 12:31:37:550PM	1070621009	David Howell	Repeat 1070621004, A-coil current 4kA from 0.85 sec, then back to 0kA at 1.3sec. configuration +Dtop +Dbot +Jtop +Jbot (n=2). Trying for full length RF. Turn off the J port RF. Very nice steady 1.8MW RF, which got us into H-mode. There is a steady decrease in rotation velocity from hirex_sr after 0.9sec, with a recovery after the A-coil has been turned off.
Jun 21 2007 12:32:20:220PM	1070621010	David Howell	Repeat the reference shot with no A-coil current.
Jun 21 2007 01:03:31:787PM	1070621010	David Howell	Repeat the reference shot with no A-coil current. Very similar rotation to 1070621009 from hirex_sr, even down to the increase in rotation at 1.4sec, which was hoped to be due to the A-coil switch-off. Not good.
Jun 21 2007 01:37:31:547PM	1070621011	David Howell	Cell access to change the polarity of the A-coil. Repeat shot 1070621009. Injection at 0.75sec, but plasma survives. Rotation looks the same as shots 9 and 10 until 1.3sec.
Jun 21 2007 01:46:09:570PM	1070621012	David Howell	Turn on A-coil at 0.5sec, before RF. Small drop in RF power 0.95sec, but drops out of H-mode just before. No obvious change in the rotation.
Jun 21 2007 02:03:52:613PM	1070621013	David Howell	Repeat with 2.5kA A-coil current. hirex_sr gives the same rotation as 1070621012 up to 0.9sec.
Jun 21 2007 02:13:39:637PM	1070621014	David Howell	Change the program slightly. Turn off RF. Acoil to 3.7kA at 0.5sec. Turn off the gas at 0.7sec to try to find the locked mode threshold with applied n=2 fields. Density remains constant through the shot. No locked mode.
Jun 21 2007 02:19:26:610PM	1070621015	David Howell	Repeat with lower target density. Density is indeed lower, but does not drop when fuelling is stopped. No locked mode.
Jun 21 2007 02:43:49:770PM	1070621016	David Howell	Repeat with lower target density. Density is lower. Locked mode present from ~0.7sec, nl_04~3.2e19.
Jun 21 2007 02:46:42:787PM	1070621017	David Howell	Repeat with no A-coil. Locked mode forms ~0.8sec, nl_04~3.2e19. Same as with A-coil.
Jun 21 2007 03:00:55:157PM	1070621018	David Howell	Repeat 1070621015 with no A-coil. Locked mode at 0.95sec, nl_04~5e19. Density slightly lower than shot 015.

Physics Operator Comments
Jun 21 2007 08:54:11:900AM	1070621001	Joseph Snipes	Shot 1: TF test shot.
Jun 21 2007 09:34:47:900AM	1070621002	Joseph Snipes	Shot 2: Copied shot 1070531015 and changed Ip to 0.8 MA. Changed TF rampdown programming from 1.6 to 1.5 s. Disrupted at 0.84 s.
Jun 21 2007 10:15:27:447AM	1070621003	Joseph Snipes	Shot 3: Repeat. Good shot.
Jun 21 2007 10:19:52:090AM	1070621004	Joseph Snipes	Shot 4: Programmed A-coil current without feedback ramping up to 4 kA starting at 0.8 s to 0.85 flattop to 1.5 s then ramping down to 0 at 1.6 s. Good shot. Nice long EDA H-mode just as in shot 3.
Jun 21 2007 10:58:55:650AM	1070621004	Joseph Snipes	Delay to fix the TF power supply.
Jun 21 2007 11:20:43:903AM	1070621005	Joseph Snipes	Shot 5: Another TF test shot.
Jun 21 2007 11:40:30:480AM	1070621006	Joseph Snipes	Shot 6: Repeating shot 4 hopefully with higher ICRF power. Good shot.
Jun 21 2007 11:53:10:770AM	1070621007	Joseph Snipes	Shot 7: Try again to get steady ICRF power without faults. Good shot.
Jun 21 2007 12:06:34:347PM	1070621008	Joseph Snipes	Shot 8: Set A-coil to ramp down to zero between 1.3 and 1.35 s. Good shot but J-port continues to fault.
Jun 21 2007 12:24:53:747PM	1070621009	Joseph Snipes	Shot 9: Try again without J-port to try to keep constant ICRF power in H-mode. Got constant ICRF power. Good shot.
Jun 21 2007 12:33:53:997PM	1070621010	Joseph Snipes	Shot 10: Disabled A-coil. Good shot.
Jun 21 2007 01:15:33:140PM	1070621011	Joseph Snipes	Shot 11: Reversed polarity on the A-coil with a cell access before this shot. Raised EF4 current from -1330 to -1320 A at breakdown. Increased prepuff by 3 ms to 19 ms duration. Re-enabled the A-coils. Good shot.
Jun 21 2007 01:35:36:497PM	1070621012	Joseph Snipes	Shot 12: Turned on A-coil flattop between 0.5 and 1.6 s still with reversed polarity. Dtop -1, Dbot -1, Jtop -1, Jbot -1. Good shot.
Jun 21 2007 01:54:34:217PM	1070621013	Joseph Snipes	Shot 13: Reduced A-coil current to 2.5 kA. Good shot.
Jun 21 2007 02:03:41:740PM	1070621014	Joseph Snipes	Shot 14: Returned A-coil current to 4 kA. Set nl04 to go negative after 0.7 s. Turned off ICRF power. Good shot.
Jun 21 2007 02:19:04:237PM	1070621015	Joseph Snipes	Shot 15: Reduced nl04 to 5 x 10^19 m^-2 before 0.7 s, then negative after that. Raised EF4 current from -1320 to -1310 A. NINJA puff turned off. Good shot.
Jun 21 2007 02:43:28:033PM	1070621016	Joseph Snipes	Shot 16: Reduced nl04 to 3 x 10^19 m^-2 before 0.7 s, then negative after that. Startup looks go so I'll leave it alone. Good shot. Disrupted at 1.65 s apparently due to a locked mode induced by the A-coil.
Jun 21 2007 02:46:30:990PM	1070621017	Joseph Snipes	Shot 17: Repeat with A-coils disabled. Good shot. No disruption but there is a clear locked mode at about 0.82 s.
Jun 21 2007 02:56:05:310PM	1070621018	Joseph Snipes	Shot 18: Set nl04 to 5 x 10^19 m^-2. A-coils disabled. Good shot. Disrupted at 1.69 s. Locked mode at 1.01 s.

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	09:02:38:627AM	Test	Ok	TF PLC 50kA test
2	09:32:46:523AM	Plasma	Ok
3	10:01:19:483AM	Plasma	Ok
4	10:15:58:947AM	Plasma	Ok
5	11:26:03:737AM	Test	Ok	50KA TF Test Shot
6	11:38:25:043AM	Plasma	Ok
7	11:50:59:757AM	Plasma	Ok
8	12:04:42:453PM	Plasma	Ok
9	12:18:05:463PM	Plasma	Ok
10	12:31:02:507PM	Plasma	Ok
11	01:13:48:263PM	Plasma	Ok
12	01:33:48:137PM	Plasma	Ok
13	01:49:30:820PM	Plasma	Ok
14	02:01:58:643PM	Plasma	Ok
15	02:14:42:433PM	Plasma	Ok
16	02:27:29:960PM	Plasma	Ok
17	02:39:58:000PM	Plasma	Ok
18	02:53:04:027PM	Plasma	Ok

System Availability

Jun 21 2007 09:02:12:030AM

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 for senstivity, still need better time constants. Midplane and divertor AXUV being digitized, processing calibration data. May 29 2007 11:22AM (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 Only high frequency channels now working (17 to 32). LO looks good. Most likely it is the 5V supply for mixer bais and amp that is the problem. Jun 20 2007 09:23AM (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. dipole configuration. Using #4 transmitter only. Max power about 1.5 MW instead of 3 MW. Jun 20 2007 09:22AM (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 data being digitized, processing calibration data. Divertor views showing significant noise, and not available. Upper view being debugged. May 29 2007 11:23AM (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 no System temporarily unavailable since 1070616001 Jun 19 2007 08:20AM (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, 11 spatial channels. Density is calibrated based on ECE cutoffs obtained on 4 May 2007. Additional spatial channels will be added over the next several weeks. May 10 2007 10:37AM (jwhughes) Jerry Hughes Core Thomson scattering jwhughes TS - Edge yes 2 lasers, 20 spatial channels. Fiber holder position is -124.5mm (standard). Density is calibrated according to Raman scattering results from 26 May, supplemented with ECE cutoffs obtained on shot 1070531015. Jun 14 2007 06:21PM (jwhughes) Jerry Hughes Millimeter resolution edge Thomson scattering jwhughes Vispec yes 350 and 670 nm, 4 spatial channels May 04 2007 01:02PM (agraf) Alex Graf Visible Spectrometer agraf