Miniproposals

Miniproposal: 625 Date Filed: 11/19/2010 Title: Effect on X-point location on H-mode power threshold in SN plasmas First Author: Yunxing Ma Session Leader: Yunxing Ma (shots 1-31)

Engineering Operator Run Comment

MP625 Session Leader: Y.Ma Physics Operator: S.Shiraiwa

Session Leader Plans

Entered: Dec 20 2010 06:20:56:650PM

Author: Yunxing Ma

Run plan for 1101221 SL: Y.Ma P.O.: S.Shiraiwa The goal of this run is to explore the effect of X-point location on H-mode power threshold and L-H transition in LSN plasmas. MP attached to this run is MP625. To start with, the target magnetic geometry to be loaded is standard C-Mod LSN configuration, for example, that in shot 1101215023. Other plasma parameters are: BT=5.4T, Ip=0.9MA, nl04=0.8*1020m-2. The approximate total heating power required for H-mode access with this combination is minimum, about 1.5MW. RF power is slowly ramped up from 0.3MW to 3.0MW during Ip flattop. A sample ramp-up pattern can be referred to shot 1070807004. After the first H-mode is achieved, and the associated Pth is calculated, the run will move forward with the X-point height scans in various conditions. First, plasma parameters (nl04, BT, Ip, kappa, delta, q95, etc) are maintained as in the target shot, then shift the plasma down (reduce ZXL) so that the outer striking point being placed on the floor. According to previous observations (run 1090824-27), Pth should be substantially decreased in this case. Then, with the striking point being kept on the floor (not necessarily to be fixed), scan a few ZXL (2~3) see if Pth would be greatly affected or not. It is trying to mock up the open divertor scenario as in JET (or so does the experiments done in MAST with closed divertor) by doing this. Secondly, the outer striking point scan will be more systematically revisited (previous discovery in run 1090824-27 was incidental). The outer striking point will be dragged to 2~3 different locations on the outer divertor plate, correspondingly ZXL, RXL, lower triangularity (delta_lower), and outer leg length (Lo-div) will be co-varied. Among them, the variation of Lo-div and delta_lower will be more distinguishable and relevant here, such that Lo-div would be expected to continuously decrease, while delta_lower should decrease first then rise back up again, as the Zo-sp (vertical distance of outer striking point) increases (being moved up along the divertor plate). The variation of Pth from baseline (that of target shot) will be traced in each scenarios so that we attempt to tell which one(s) of delta_lower and Lo-div is associated with the power threshold and L-H transition physics, and how (parametric dependence). In the third part, the Xpt will be moved inward to HFS direction until the outer striking point being placed on top of the inner shelf (EF1 pocket). The Lo-div is small and delta_lower is larger with this setup. Scan the ZXL at a few locations in this configuration. After finishing the 3 steps above, try another density, say nl04=0.5 or nl04=1.1.The purpose is to verify whether the variation of Pth is absolute (i.e. constant in whatever environment) or fractional (i.e. proportional to the correspondent Pth) Diagnostic Requirement: Most of the key C-mod diagnostics are requested in this run, in particular, TS, ECE (GPC,GPC2, FRCECE). It is desired that GPC/GPC2 and FRCECE are configured with Te,95 measurements, and bolometer. Highly desired diagnostics include CXRS for edge Ti and rotation measurements, X-mode reflectormeter, and GPI.

Entered: Dec 21 2010 10:53:42:143AM

Author: Yunxing Ma

increase Bt to 5.55 to get better FRCECE coverage.

Entered: Dec 21 2010 10:59:20:667AM

Author: Yunxing Ma

L-H at 0.857s, nl04=8.3 10^19, nbar=1.55n20. Ploss=1.65MW

Entered: Dec 21 2010 11:07:47:283AM

Author: Yunxing Ma

RF go steps. 1.0->1.1->1.2MW

Physics Operators Plans

Entered: Dec 20 2010 09:29:19:717PM

Author: Syunichi Shiraiwa

Engineering Setup for 12/21 MP625 - Effect on X-point location on H-mode power threshold in SN plasmas Session Leader: Y.Ma Physics Operator: S.Shiraiwa Overnight: ECDC in He overnight Run will start at 09:00 and end at 17:00. Power systems as on: 1101215023 (LSN, 5.4 T, 0.9 MA, nl04=0.8e20, no Cryopump) A-coil configuration: +Dtop -Dbot -Jtop +Jbot; Hybrid enabled (standard configuration) Gas Setup: Fill B-Top with 6 psi D2 Hybrid enabled (PG4) fill B-side lower with 4 psi Ne Hybrid DISABLED (PG1) fill H-bottom with 1 psi Ar Hybrid enabled (PG5) 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 NOTE: Have N2 available on the gas manifold for possible use later in the day. Enable the following gate valves and shutters, assuming no vacuum problems: ECE, VUV, Z-bolo, HIREX-Sr, B-spectrometer GV Torvac setup: keep gate valves open during pulse Specific diagnostics: DNB, TS, ECE diagnostics (see SL plan), CXRS Ti, bolometer, rotation, X-mode reflectometer, and GPI ------------------------------------------------------------------------------ Boronization: no Impurity injector: no ICRF: yes LH: no DNB: yes Cryopump: yes ------------------------------------------------------------------------------

Session Leader Summaries

Entered: Dec 21 2010 05:59:31:967PM

Author: Yunxing Ma

Today's run is was to explore the Pth dependence on Xpt locations. The run is successful, despite the one hour delay at the beginning. The outer striking point was scanned from high Zsp on divertor tile to the floor (Zsp=0) through Xpt control. We have observed significant reduction in H-mode power threshold when the striking point was on the floor (~0.7MW), than it was placed on the tile (~1.5MW). So it suggest that the reduction can be as much as 50%! This result will be very promising if the it can be applied (proved to work) on ITER to assist H-mode access. Since the shaping parameters (delta_lower,xpt loc, leg length, etc.) can not be independently varied, it's not clear so far which one plays the dominant role. Throughout the day, delta_lower was hold mostly in between 0.5~0.6, and kappa~1.5, but the leg lengths could differ by a factor of two between the on-divertor and on-floor striking configuration. The hypothesis based on the first look at data is that the longer (those on SP on floor) the outer leg length, the lower the Pth. In addition, we have scanned the Xpt at several different locations with the striking point fixed on the floor. We do see the variation in Pth among this group of data, so this is a good starting point to test the hypothesis above. Detailed data analysis will be carried out, and preliminary results will be reported on recent staff meeting.

Physics Operator Summaries

Entered: Dec 21 2010 09:03:11:820AM

Author: Syunichi Shiraiwa

No Power

Entered: Dec 22 2010 07:23:04:810AM

Author: Syunichi Shiraiwa

The machine works well today. We made 24 full length discharges plus three disruptions (one during the flat-top and two during the current ramp-up) During the morning, an problem on the voltage monitor of the alternator developed. But did not results in a serious loss of discharges. Today, we surveyed the H-mode threshold power dependence on the diverter geometory in particular the length of diverter leg. The control was mostly done by program of the lower X-point, the height of magnetic axis (ZCUR) and the height of the upper X point. The outer gap was also adjusted to avoid plasma touching it when ZCUR is off from the mid-plane by a large degree. Shot 6 and shot 12 are two typical case of shot and long dirverter leg discharges, respectively.

Session Leader Comments
Dec 21 2010 04:11:35:973PM	1101221005	Yunxing Ma	First plasma today. L-H at 0.547s, Ploss=1.23MW, nl04=7.59 10^19, nbar=1.42n20
Dec 21 2010 04:10:13:063PM	1101221006	Yunxing Ma	nice L-H shot! Clear L-H at 0.873s. Ploss=1.526MW, nl04=8.23 10^19, nbar=1.59n20
Dec 21 2010 04:07:44:820PM	1101221007	Yunxing Ma	L-H at 0.857s, nl04=8.3 10^19, nbar=1.55n20. Ploss=1.65MW
Dec 21 2010 11:13:59:240AM	1101221008	Yunxing Ma	L-H 0.878s, nl04=7.88, nbar=1.46n20, Ploss=1.54MW
Dec 21 2010 11:19:58:613AM	1101221009	Yunxing Ma	RF go ramp-up this shot
Dec 21 2010 11:20:14:560AM	1101221009	Yunxing Ma	RF go ramp-up this shot striking point on the floor
Dec 21 2010 11:27:19:147AM	1101221009	Yunxing Ma	L-H at 0.593s, nl04=8.18, nbar=1.54, Ploss=0.9MW about 0.6MW reduction of Pth.
Dec 21 2010 11:35:26:027AM	1101221010	Yunxing Ma	RF power steps: 0.4->0.5->0.6->0.7MW
Dec 21 2010 11:48:08:670AM	1101221010	Yunxing Ma	many transitions first one at 0.575s, nl04=7.87, nbar=1.48n20, Ploss=0.75MW next shot: reduce target RF power by 0.1MW. go for 0.3->0.4->0.5->0.6MW
Dec 21 2010 12:15:33:647PM	1101221012	Yunxing Ma	L-H at 0.62s~0.74s (likely two steps), nl04=8.2, nbar=1.5n20, Ploss=0.59MW!
Dec 21 2010 12:20:16:280PM	1101221013	Yunxing Ma	no DNB this shot
Dec 21 2010 12:27:22:280PM	1101221013	Yunxing Ma	D-alpha dithering before transition, so no clear the exact time for L-H, but it should be close to 0.65s nbar~1.5n20, Ploss~0.7MW
Dec 21 2010 12:34:36:657PM	1101221014	Yunxing Ma	reduce ZXL by 2cm, keeping the striking point on the floor RF goes for ramp up pattern
Dec 21 2010 12:56:01:673PM	1101221014	Yunxing Ma	L-H at 0.737s, nl04=7.43, nbar=1.33n20 (kappa is larger,kappa=1.7, target=1.6) Ploss=1.0MW
Dec 21 2010 12:59:16:270PM	1101221015	Yunxing Ma	L-H at 0.953s. nbar~1.33n20, nl04~7.4, Pth~0.95MW kappa is still large, reduce ZCUR by 2cm next shot
Dec 21 2010 01:07:52:937PM	1101221016	Yunxing Ma	L-H at 0.663s, nl04=7.9, nbar=1.43n20, Ploss~0.8MW the elongation is back to 1.5
Dec 21 2010 01:12:05:630PM	1101221017	Yunxing Ma	RF go steps, 0.2->0.3->0.4->0.5MW
Dec 21 2010 01:35:27:000PM	1101221018	Yunxing Ma	L-H at 0.882s, nbar=1.35n20, nl04=7.56, Ploss~1.1-1.2MW
Dec 21 2010 01:46:37:167PM	1101221019	Yunxing Ma	L-H at 0.941s, nbar=1.40n20, nl04=7.45, Ploss=0.8MW
Dec 21 2010 02:07:38:327PM	1101221020	Yunxing Ma	striking point on the plate this shot. Ploss~1.2MW
Dec 21 2010 02:19:19:770PM	1101221021	Yunxing Ma	L-H at 0.72s, nbar=1.4n20, Ploss=1.0MW striking point again on the divertor plate
Dec 21 2010 03:25:39:510PM	1101221021	Yunxing Ma	L-H at 0.72s, nbar=1.41n20, Ploss=1.0MW
Dec 21 2010 03:26:22:000PM	1101221022	Yunxing Ma	disrupted at 0.79s
Dec 21 2010 03:27:56:783PM	1101221023	Yunxing Ma	Fist H-mode at ~0.684s, nbar=1.57n20, Ploss=0.88MW
Dec 21 2010 03:24:10:643PM	1101221025	Yunxing Ma	L-H at 0.65s, nbar=1.61n20, Ploss~0.8MW density higher
Dec 21 2010 03:45:25:153PM	1101221026	Yunxing Ma	striking point on the outer divertor, very short leg length. H-mode at 1.04s, nbar=1.5n20, Ploss=1.54MW Pth is going up
Dec 21 2010 03:58:58:373PM	1101221027	Yunxing Ma	H-mode at 0.883s, nbar=1.5n20, Ploss=1.53MW striking point is high, outer leg length is short
Dec 21 2010 04:18:57:073PM	1101221028	Yunxing Ma	L-H at 1.116s, nbar=1.52n20, Ploss=1.57MW
Dec 21 2010 04:37:12:240PM	1101221029	Yunxing Ma	No H-mode, RF power not enough next shot: repeat, with RF 2.5MW
Dec 21 2010 04:49:35:747PM	1101221030	Yunxing Ma	H-mode at 1.11s, nbar=2.12n20,Ploss=2.0MW
Dec 21 2010 05:05:24:377PM	1101221031	Yunxing Ma	H-mode happened earlier first L-H at 0.64s, nbar=1.7n20, Ploss=1.0MW

Physics Operator Comments
Dec 21 2010 11:38:34:857AM	1101221001	Syunichi Shiraiwa	Loaded 1101215023 Change Ip 1.1-> 0.9MA, ne 1.1->0.8
Dec 21 2010 11:38:00:333AM	1101221003	Syunichi Shiraiwa	The alternator is under inspection
Dec 21 2010 11:37:35:857AM	1101221004	Syunichi Shiraiwa	No power test.
Dec 21 2010 11:37:14:507AM	1101221005	Syunichi Shiraiwa	H mode at 0.55s Strike point is moving from the vertical tile to the floor. Next : Keep RXL at 0.005 (1cm outside of this shot). Increase TF 5.5T for a better FRCECE measurement
Dec 21 2010 11:36:55:600AM	1101221006	Syunichi Shiraiwa	Good shot Strike point is located around 2nd and 3rd tile (from the bottom) H-mode at 0.875 s Next: Increase TF to 5.5 T
Dec 21 2010 11:36:35:080AM	1101221007	Syunichi Shiraiwa	Strike point position OK, TF field 5.55 T FRCECE position looks OK Next: Change ICRF power waveform
Dec 21 2010 11:36:02:770AM	1101221008	Syunichi Shiraiwa	Good shot (repeat of shot 7) Next: Strike point moves to the bottom floor. Moves RXL by 1.2cm inward
Dec 21 2010 11:35:21:733AM	1101221009	Syunichi Shiraiwa	H mode transition at 0.6 s Pth appears to be reduced. Strike point is still on the vertical tile at the transition.
Dec 21 2010 11:44:27:673AM	1101221010	Syunichi Shiraiwa	Multiple H-mode transition Next: No change in PCS
Dec 21 2010 12:01:14:717PM	1101221011	Syunichi Shiraiwa	Several transitions. Next : No change in PCS
Dec 21 2010 12:19:39:360PM	1101221012	Syunichi Shiraiwa	Next: No change in PCS, No Beam
Dec 21 2010 12:35:08:327PM	1101221013	Syunichi Shiraiwa	Double H-mode Next: Moves ZXL below by 2cm
Dec 21 2010 12:46:49:783PM	1101221014	Syunichi Shiraiwa	Three H-mode, and disrupted after the flattop. Maybe the elongation is too much during the later part of plasma. Next: mover ZCUR below by 5mm
Dec 21 2010 01:08:35:173PM	1101221015	Syunichi Shiraiwa	Full length plasma Elongation same as 13. Next: Keep this PCS and change the ICRF waveform
Dec 21 2010 01:20:59:497PM	1101221017	Syunichi Shiraiwa	Disrupted during the ramp-up
Dec 21 2010 01:37:06:067PM	1101221018	Syunichi Shiraiwa	Disrupted during the ramp-down
Dec 21 2010 01:52:05:023PM	1101221019	Syunichi Shiraiwa	Full length Next: Move X-point below by 1.5 cm outward by 2.5cm outward. Move ZCUR below by 5mm
Dec 21 2010 02:07:19:687PM	1101221020	Syunichi Shiraiwa	Limited discharge. Next: reload shot 19 and move ZCUR 0.7mm and ZXL 1.5mm below. No change in RXL
Dec 21 2010 02:25:46:260PM	1101221021	Syunichi Shiraiwa	Limited Next : move RCUR by 5mm inward. RXL moves inward 1.5cm
Dec 21 2010 02:37:32:970PM	1101221022	Syunichi Shiraiwa	Disrupted at 0.6 s Touching in the inner wall? Next : Starting from shot 12 and try to move plasma upward Reload shot 12, Move ZXL by 1.5cm upward and RXL by 0.5cm inward
Dec 21 2010 02:56:32:080PM	1101221023	Syunichi Shiraiwa	Fulllength. Next : Move RXL 1cm inward, ZXL 1.5cm upward, ZCUR 0.5cm upward, ZXU 0.5cm downward
Dec 21 2010 02:57:01:187PM	1101221023	Syunichi Shiraiwa	Fulllength. Next : Try to move the lower Xpoint even higher. Move RXL 1cm inward, ZXL 1.5cm upward, ZCUR 0.5cm upward, ZXU 0.5cm downward
Dec 21 2010 03:04:04:600PM	1101221024	Syunichi Shiraiwa	Disrupted during the ramp-up. PG3 at 0s was modified to increase the puff.
Dec 21 2010 03:25:45:633PM	1101221024	Syunichi Shiraiwa	Full length Next: will try an opposite extreme case. Reloaded shot 6 and moved RXL outward by 1cm to locate the outer gap on the top of the vertical diverter.
Dec 21 2010 03:46:35:727PM	1101221026	Syunichi Shiraiwa	Full length. Two H-mode transition. Strike point on the top of the vertical part of the outer diverter. Next: Change ICRF to determine the Pth. No change in PCS.
Dec 21 2010 04:18:47:230PM	1101221027	Syunichi Shiraiwa	Four H-mode transitions after 0.9 s. Higher power is required for transition (about 0.9MW) No FRCECE data Next : move RCUR 2mm inward and RXL 10mm outward.
Dec 21 2010 04:19:34:207PM	1101221028	Syunichi Shiraiwa	Shape looks similar to 27 Next:
Dec 21 2010 04:29:41:833PM	1101221028	Syunichi Shiraiwa	Full length. Two H-mode transitions. Next : Load shot 6 and increase the density to 11e19.
Dec 21 2010 04:36:37:057PM	1101221029	Syunichi Shiraiwa	Full length. No H-mode Next: Change ICRF program
Dec 21 2010 04:50:42:273PM	1101221030	Syunichi Shiraiwa	Full length. Steady H-mode Next: Load shot 12.

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	08:51:29:217AM	Test	Ok	Gas test
2	08:59:15:753AM	Plasma	Bad	Alt no shot permissive
3	09:09:28:350AM	Test	Bad	Alt shot permissive
4	10:16:36:783AM	Test	Ok	Alternator shot permissive
5	10:25:22:140AM	Plasma	Ok
6	10:41:47:827AM	Plasma	Ok
7	10:54:46:650AM	Plasma	Ok
8	11:08:07:587AM	Plasma	Ok
9	11:20:49:230AM	Plasma	Ok
10	11:36:35:390AM	Plasma	Ok
11	11:54:29:000AM	Plasma	Ok
12	12:08:13:163PM	Plasma	Ok
13	12:20:46:103PM	Plasma	Ok
14	12:34:47:653PM	Plasma	Ok
15	12:49:21:267PM	Plasma	Ok
16	01:01:49:817PM	Plasma	Ok
17	01:14:15:347PM	Plasma	Ok
18	01:26:46:800PM	Plasma	Ok
19	01:39:19:850PM	Plasma	Ok
20	01:54:31:797PM	Plasma	Ok
21	02:12:19:673PM	Plasma	Ok
22	02:26:08:987PM	Plasma	Ok
23	02:44:04:613PM	Plasma	Ok
24	02:56:33:003PM	Plasma	Ok
25	03:09:03:133PM	Plasma	Ok
26	03:39:30:323PM	Plasma	Ok
27	03:52:23:497PM	Plasma	Ok
28	04:12:53:040PM	Plasma	Ok
29	04:31:12:927PM	Plasma	Ok
30	04:43:37:070PM	Plasma	Ok
31	04:55:59:483PM	Plasma	Ok

System Availability

Dec 21 2010 08:51:13:957AM

System Available Comment Availability Changed Owner Description Who Can Change Active MHD no secured - tagged out Jun 02 2008 11:03AM (sears) Joe Snipes Active MHD Antenna sears,snipes BES yes BES system is online Oct 21 2010 11:33AM (bespam) Bill Rowan Beam Emission Spectroscopy bespam,liao,rowan Bolometers yes 2pi (D+F) working. All midplane and off-midplane diode arrays working except WB1AX. Midplane foils calibrated and PRAD_MAIN is being filled. Divertor/Ledge foils not yet ready. Jul 15 2010 08:27AM (mlreinke) Matt Reinke Bolometers hutch,mlreinke Boronization yes   Nov 16 2010 02:36PM (dekow) Jim Irby Boronization dekow,irby CNPA yes Multiple channel CNPA available Oct 21 2010 07:11PM (parker) Ron Parker Compact Neutral Analyzer parker Cryopump - Upper Divertor no Shut down. Helium dewar removed. LN2 manual valve and solenoid valves are closed and tagged. Apr 06 2010 10:51AM (labombard) Brian LaBombard Upper Divertor Cryopump irby,labombard CXRS yes Wide-view CXRS system is online Oct 21 2010 11:33AM (bespam) Bill Rowan Charge Exchange Spectroscopy bespam,blip,liao,rachmcd,rowan D Alpha yes \ha2_bright is available; \SPECTROSCOPY::TOP.VUV.VIS_SIGNALS:MCP_VIS_SIG1 is not available Jul 01 2009 09:45AM (terry) Jim Terry Balmer Alpha Monitor irby,terry,wolfe Dalsa yes system is aligned; new calibrations (relative brightness and position) not yet implemented Jun 29 2010 10:27AM (marmar) Earl Marmar Visible Bremsstrahlung marmar Disruption Mitigation yes operational, but turned off Nov 03 2009 04:59PM (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 in test mode only Nov 03 2009 05:01PM (granetz) Robert Granetz Diagnostic Neutral Beam dterry,granetz,gung ECDC yes Operational Jun 26 2010 09:28PM (irby) Jim Irby 2.45 GHz, 3 kW, discharge cleaning system dekow,irby,pfeiffer FRC-ECE yes All channels working and calibrated. Oct 27 2010 03:41PM (phillips) Perry Phillips Heterodyne ECE-32 channels phillips G-Side Ratiomatic yes Gauges are operational. Jun 28 2010 08:02PM (labombard) Brian LaBombard G-side ratiomatic ionization gauge labombard,toland Glow Discharge no Plugs for Power Supply and Controls have been unplugged and red tagged making system safe for In-Vessel Access. Apr 05 2010 11:18AM (dekow) Jim Irby 1 kV, 5 A, glow discharge system dekow,dterry,irby GPC yes Operational. Jul 28 2009 04:23PM (hubbard) Amanda Hubbard ECE Polychromater hubbard,schmidt GPC2 yes Most channels operational. Oct 22 2010 11:46AM (hubbard) Amanda Hubbard ECE Polychromater hubbard,schmidt GPI yes The 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 Terry Gas Puff Imaging terry,zweben H/D yes operating normally Jun 29 2010 10:26AM (marmar) Earl Marmar H/D Ratio marmar HEAT yes   Jun 26 2010 11:19PM (dekow) Gary Dekow - Machine Heaters - burke,dekow Hirex Jr yes Hirex-Jr has been installed Jun 28 2010 03:36PM (rice) John Rice High Resolution X-Ray ince,rice Hirex Sr yes System installed and aligned. Inverted Profiles for Ti are available upon request. Vtor profiles still under revision. Dec 17 2010 09:25AM (ypodpaly) John Rice High Resolution X-Ray ince,rice,ypodpaly HXR yes 32 Channels operational Oct 23 2010 01:41PM (parker) Ron Parker Hard X-Ray Array faust,parker,schmidt ICRF D-Antenna yes system checked out ok on 11006728. Jun 28 2010 04:57PM (ylin) Steve Wukitch D-port antenna wukitch,ylin ICRF E-Antenna yes system checked out ok on 1100628 Jun 28 2010 04:57PM (ylin) Steve Wukitch E-port antenna wukitch,ylin ICRF J-Antenna yes system checked out ok. conditioned to vacuum. Jun 28 2010 04:58PM (ylin) Steve Wukitch J-port antenna wukitch,ylin Laser Blow-Off yes operational and tested Jul 20 2010 04:42PM (g) Martin Greenwald Impurity Injection System g,nthoward Lower Hybrid yes LH working. New directional couplers installed at input to each klystron. Oct 21 2010 11:42AM (dterry) Ron Parker Lower Hybrid dterry,parker,wallaceg Lower Hybrid Reflectometer yes 50GHz: up-, 60 GHz up- and down- Oct 21 2010 11:31AM (sgbaek) Arturo Dominguez Lower Hybrid Reflectometer dominguez,marmar,parker,sgbaek Lower Hybrid SOL reflectometer yes differential phase (profile) working since 8/27/2010. full phase (fluctuations + profile) is not. If put on a miniproposal, please request LH launcher to be moved in Oct 05 2010 11:26AM (cornwall) Cornwall Lau Lower Hybrid SOL reflectometer cornwall,wukitch,ylin LPI no Beam line removed May 30 2008 02:09PM (bose) Earl Marmar Lithium Pellet Injector bose,marmar Ly-alpha no WB4LY and LLY working but not during ICRF. WB1LY not attached due to pickup problems. LYMID attached but have profile problems. Aug 24 2010 09:17AM (mlreinke) Matt Reinke Lyman alpha cameras labombard,mlreinke McPherson yes Spectra being collected and tree filled. Wavelength scan is broken so fixed on the Mo XXXI and XXXII lines. Jul 15 2010 08:28AM (mlreinke) Jim Terry VUV Spectrometer mlreinke,terry Michelson yes Operational. Oct 22 2010 11:46AM (hubbard) Amanda Hubbard ECE Te Profiles hubbard,schmidt MKS yes Gauges are operational Jun 28 2010 08:02PM (labombard) Brian LaBombard Baratron pressure gauges labombard MLP no System 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 LaBombard Mirror Langmuir Probe Electronics System labombard MSE no As of 6/10/09, MSE is calibrated & ready to go. Awaiting DNB. Jun 10 2009 10:34AM (sscott) Steve Scott Motional Stark Effect jinseok,sscott Neutrons yes All systems are on and functional Jun 29 2010 12:56PM (fiore) Catherine Fiore Neutron Detectors fiore Neuts and Hards yes PMT Neuts_hards, ssd_x01, ssd_x02, ssd_x03 Jun 26 2010 09:21PM (irby) Jim Irby X-Ray/Neutron Detectors at K-Hor irby NINJA no Capillaries tested in-vessel. Jun 28 2010 08:08PM (labombard) Brian LaBombard NINJA gas puff labombard,terry PCI yes Operational. AM (2 * 39.51) MHz. Dec 13 2010 05:29PM (ntsujii) Miklos Porkolab Phase Contrast Imaging ennever,ntsujii,porkolab Penning Gauges no High voltage power supplies are turned off, waiting for work at A-port horizontal to be finished. Jun 28 2010 08:07PM (labombard) Brian LaBombard Penning Ionization Gauges labombard Plasma TV yes WIDE1, WIDE2 (chan 33), DANT, JANT and DIV are operational. Jul 01 2009 09:46AM (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 Power - Alternator Air Switch yes   Jun 26 2010 11:19PM (dekow) Gary Dekow feeds all the other supplies cochran,dekow,dterry,irby Power - PEI yes   Jun 26 2010 11:19PM (dekow) Gary Dekow PEI System cochran,dekow,dterry,irby Power - TMX yes   Jun 26 2010 11:19PM (dekow) Gary Dekow Ef2s,. EFCs and A-Coils byford,cochran,dekow,dterry,irby Power Systems yes   Jun 26 2010 11:20PM (dekow) Jim Irby C-Mod Magnet Supplies byford,cochran,dekow,dterry,irby Probe Array - ISD yes Operational. Jun 28 2010 08:03PM (labombard) Brian Labombard Inner Lower Divertor Probe Array labombard Probe Array - LH yes Operational. Jun 28 2010 08:03PM (labombard) Brian LaBombard Lower Hybrid Probe Array labombard Probe Array - OSD yes F and J outer divertor probes are operational. Jun 28 2010 08:04PM (labombard) Brian LaBombard Outer Lower Divertor Probe Array labombard Probe Array - UDIV yes Operational, except probe#13 Jun 28 2010 08:04PM (labombard) Brian LaBombard Upper Divertor Probe Array labombard Reflectometer yes As of 1101123, the 60, 88u, 88l, 140 and variable set at 115GHz are operational. The 50, 75 and 112 are nonoperational. On 1101123, the noise band at ~200kHz is again seen on the 88u and 88l channels. Nov 23 2010 09:30AM (dominguez) Earl Marmar Reflectometer dominguez,marmar Scanning Probe - ASP yes Operational. New Langmuir-Mach probe head installed. Jun 28 2010 08:05PM (labombard) Brian LaBombard A-Port Scanning Probe labombard Scanning Probe - FSP yes Operational. Jun 28 2010 08:05PM (labombard) Brian LaBombard F-Port Scanning Probe labombard Scanning Probe - WASP yes Both A and K units are operational. Coil polarity needs to be checked. Jun 28 2010 08:06PM (labombard) Brian LaBombard Inner Wall Scanning Probe labombard,nsmick Sparker yes HV supply on, cable run to sparker at k-hor Jun 23 2010 02:41PM (irby) Jim Irby Field Emission Preionization for C-Mod dekow,irby,parkin Surface Science Station yes SSS installed and leak tested. Oct 21 2010 11:31AM (ochoukov) Bruce Lipschultz Radially scanning probe located on K-port blip,ochoukov TCI yes No new CO2 detector, so still missing edge channels Jun 23 2010 02:40PM (irby) Jim Irby Two-Color Interferometer irby,murray TS - Core yes Operating with 2 lasers Oct 22 2010 01:06PM (jwhughes) Jerry Hughes Core Thomson scattering jwhughes,yma TS - Edge yes Operational Jul 14 2010 11:54AM (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 XEUS yes Operational. Raw spectra stored but not line brightness time histories are going into the tree yet. Aug 24 2010 09:17AM (mlreinke) Matt Reinke X-ray Extended Ultraviolet Spectrometer mlreinke XTOMO yes Core system working. Edge system waiting for H-modes. Jul 01 2010 11:55AM (mlreinke) Bob Granetz X-Ray Tomography granetz,mlreinke