Alcator C-Mod Run 1090814 Information

Miniproposals

Miniproposal: 563

Date Filed: 7/30/2009

Title: Toroidal asymmetry of impurity seeding in support of ITER divertor gas injection requirements

First Author: Richard Pitts

Session Leader: Matt Reinke (shots 1-3)

Session Leader: Brian Labombard (shots 4-20)

Operators
Session leader(s):	Matt Reinke,Brian Labombard
Physics operator(s):	Ron Parker
Engineering operator(s):	Bill Cochran

Engineering Operator Run Comment
Entered by Josh

Session Leader Plans

Entered: Aug 13 2009 01:19:09:897PM

Author: Brian Labombard

Run Plan for 1090814

MP#563 "Toroidal asymmetry of impurity seeding in support of ITER divertor gas injection requirements"

Goal
We will be continuing with part 1.B of this miniproposal today - Ohmic L-Mode Density Scan -
focussing on the higher density cases (cases iii & iv). At these higher densities, we will be looking to see if the N2 puff is less perturbative to the divertor regime (i.e., the recycling level).

The run boils down to simply setting up a reference discharge (1.0 MA, 5.4 Tesla, NL04 ~ 1.0e20 then ~ 1.2e20) and puffing N2 at it from various divertor floor capillaries. This should be another boring run from the Phys-Op's perspective. If things go well, we will switch to helium discharges and puff N2 into them.

Setup
NINJA should be filled to 12 PSI N2. Reload shot#1090806032. Program density to NL04 ~ 1.0e20.
No ICRF.

Shot Plan

A. Set up 1.0 MA, 5.4 tesla, NL04 ~ 1.0e20 m-2
Take a shot without N2 injection.
Set up NINJA to puff N2 starting at 0.8 seconds for 0.2 seconds duration.
Verify that N diagnostic signals are good: Chromex, VUV, CXRS (NV)
Run through the capillary sequence (one shot for each):
K30-012
D30-012
H30-012
B30-012
F30-012
Take a shot without N2 puff.
Run through capillary sequence again (or a sparser set)

B. Increase density to achieve partial detachment prior to puff (NL04 ~ 1.2)
Run through the capillary sequence.

C. Change to helium, NL04 ~ 1.0e20
Run through the capillary sequence.

Physics Operators Plans

Session Leader Summaries

Entered: Aug 17 2009 10:00:51:130AM

Author: Brian Labombard

Run Summary for 1090814

MP#563 "Toroidal asymmetry of impurity seeding in support of ITER divertor gas injection requirements"

This was a productive day producing some interesting results for the MP. Contrary to initial expectations, we detected significant, systematic toroidal asymmetries in nitrogen as we puffed at the 5 different divertor capillary locations -- variations in NV radiation as monitored on the K-port fibers, different AXUV diodes responses looking clockwise and counter-clockwise toroidally near A-port and toroidal variations in neutral pressures as measured by in-vessel Penning gauges.

The plan was to dial up some higher density discharges than during the last outing (1090806), trying to make the N2 puff less perturbative to the divertor recycling conditions, i.e. we wanted to start with the divertor in a nearly-detached state and then hit it with the N2 puff. The hope was that conditions would be more reproducible, allowing us to tease out subtle toroidal variations, if there were any to be seen.

We took a few shots (1-5) setting up a NL04 ~ 1.1e20, 1.0 MA, 5.4 tesla LSN ohmic discharge. Initially we started with NL04 ~ 1.0e20, but this exhibited an oscillatory D-alpha response in the divertor -- not good for teasing out subtleties. So we raised the density. We also put the proper density feedback in place for deuterium discharges (instead of helium!) - a mistake that we made last time and didn't realize it until near the last shot. This fix improved the reproducibility of the density program substantially. For example, shot 5 had an excellent flat density trace (no N2 gas puffing).

Shots 6 through 16 were a set of constant shots, with the divertor capillary puff location systematically cycled through K, D, H, B, F for two cycles. We managed to scan the A-port probe (ASP) on most of these shots to record the 'upsteam' conditions. These will allow us to assess pressure losses in the divertor associated with the onset of detachment. Shot 14 disrupted before rampdown so we redid this puff. Shot 17 was a no-puff baseline.

We then proceeded to set up a higher density case, NL04 ~ 1.4e20. Shot 18 disrupted but shot 19 was found to be a good target for subsequent puffing. However, a TF fault indication showed up on the attempt of shot#20. The run was suspended for investigation and then terminated early to begin repairs to some ground-fault detection circuitry that apparently had malfunctioned and become damaged.

The run plan strategy worked extremely well. The shot-to-shot reproducibility was excellent. Matt was able to overlay NV signals, AXUV signals and bolometer signals with almost a perfect match when the same capillary was puffed on the repeated discharge. Clear variations in the signal levels emerged, dependent on puff location. We also made use of the capillary calibration shots that were taken on 1090810 to correct for variations in N2 puffing rates. Applying these to the 1090806 data revealed very similar trends as we found today, although with more shot-to-shot variation.

Systematic toroidal variations in signal levels on order of ~30% were seen. However, the response to the puff location is not trivially understood. Divertor N2 pressures seem to care if the puff is at or 'upsteam' of the pressure gauges along field lines that strike the outer divertor. Similary, toroidal-viewing AXUV diode arrays appear to respond to an 'upstream' puff. However, NV near the x-point cares about an 'upstream' puff, but only if one considers that the relevant field lines are the ones that map to the inner divertor. The D-port foil bolometer (newly installed for this campaign) also saw a sensitivity to puff location -- higher radiated power when the puff was nearer to D-port. These data are quite convincing that we are seeing real effects here.

Matt has a load of high-quality signals to sort through. Meanwhile, we are looking to run the same N2 puff sequence in NL04 ~ 1.4e20 discharges. The current run schedule calls for doing this next Tuesday afternoon. Stay tuned.

Quick shot log:
1 - fizzle

2 -LSN, 1.0 MA, 5.4T, NL04 = 0.98
D-alpha dither
No NINJA

3 -LSN, 1.0 MA, 5.4T, NL04 = 1.1 and rising
D-alpha dither gone.
But, feedback control on NL04 is set up for helium.
No NINJA
Next: try again with correct NL04 gain

4 - fizzle

5 -LSN, 1.0 MA, 5.4T, NL04 = 1.1 - very flat
ASP(+2) scanning 0.8, 1.0, 1.2

6 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.1
ASP(+4) scanning 0.75, 1.0, 1.25
NINJA N2 568 torr, Trigger 0.8, Duration: 0.2
Capillary: K30-012, Torr-Liters: 4.8
No perturbation on CB-DivL

7 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.1
ASP(+4) scanning 0.75, 1.0, 1.25
NINJA N2 567 torr, Trigger 0.8, Duration: 0.2
Capillary: D30-012, Torr-Liters: 5.2
See bump on CB-DivL

8 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.1
ASP(+4) scanning 0.75, 1.1, 1.35
NINJA N2 566 torr, Trigger 0.8, Duration: 0.2
Capillary: H30-012, Torr-Liters: 4.8
No perturbation on CB-DivL

9 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.1
ASP(+4) scanning 0.75, 1.1, 1.35
NINJA N2 565 torr, Trigger 0.8, Duration: 0.2
Capillary: B30-012, Torr-Liters: 5.2

10 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.1
ASP(+4) scanning 0.75, 1.1, 1.35
NINJA N2 564 torr, Trigger 0.8, Duration: 0.2
Capillary: F30-012, Torr-Liters: 5.1

11 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.1
ASP(+4) scanning 0.75, 1.1, 1.35
NINJA N2 564 torr, Trigger 0.8, Duration: 0.2
Capillary: K30-012, Torr-Liters: 4.8

12 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.1
ASP(+4) scanning 0.75, 1.1, 1.35
NINJA N2 563 torr, Trigger 0.8, Duration: 0.2
Capillary: D30-012, Torr-Liters: 5.2

13 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.1
ASP(+4) scanning 0.75, 1.1, 1.35
NINJA N2 562 torr, Trigger 0.8, Duration: 0.2
Capillary: H30-012, Torr-Liters: 4.95

14 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.1
Disrupted at 1.03 seconds
ASP(+4) scanning 0.75, 1.1, 1.35
NINJA N2 561 torr, Trigger 0.8, Duration: 0.2
Capillary: B30-012, Torr-Liters: 5.2

15 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.1
No probes scanning
NINJA N2 561 torr, Trigger 0.8, Duration: 0.2
Repeat capillary: B30-012, Torr-Liters: 5.1
16 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.1
ASP(+4) scanning 0.75, 1.1, 1.35
NINJA N2 559 torr, Trigger 0.8, Duration: 0.2
Capillary: F30-012, Torr-Liters: 5.1

17 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.1
ASP(+4) scanning 0.75, 1.1, 1.35
No gas puff

Go to NL04 ~ 1.4

18 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.4
No gas puff. No probes scanning.
Disrupts.

19 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.4
No gas puff. No probes scanning.

Next: puff N2 sequence

20 - TF Fault
end of run

Physics Operator Summaries

Entered: Aug 14 2009 04:36:53:633PM

Author: Ron Parker

In spite of predictions to the contrary, this was not a dull run. The main issue that developed was a TF fault that occurred on Shot 20 around 2:00 PM. After 2 hours of investigation, e.g., hi-potting the bus, it was decided to terminate the run. (After the run, examination of the box housing TF resistance measurements revealed arcing inside it; this may have initiated the fault.)

Aside from the TF ground fault, a number of other more benign problems occurred during the course of this run, including failure of the log book to update at the beginning of the run and a need to reset computers half way through the run.

One other problem which PO's should be aware of was a mixup on the requested power supply current limits. This was a simple mistake on the part of the engineers who misread the setup specified in the PhysOp plan. It resulted in a disruption when the run plan called for operating at higher density -- not catastrophic but unnecessary. It behooves the PhysOps to pay more attention to the power supply setup.

Another issue was the feedback controlling the density. The initially loaded shot was for He, which requires less FB gain (X2) than for D2 (X8). Thus the density didn't regulate as well as usual with D2 until the proper gain was restored. The lesson here is to be aware of any and all special aspects of the shot loaded for beginning plasma operation.

Although the run fell short of carrying out the full run plan, one complete scan of tdivertor radiation vs toroidal puff location was obtained.

Scorecard: 20 attempts at plasmas, 15 full length, 2 disruptions ,2 fizzles and 1 interrupted by TF ground fault.

Session Leader Comments

Aug 14 2009 09:03:53:790AM 1090814001 Matt Reinke Start with the nl04=1.0 target. Load 1090806032, no N2 puff.

Fizzle...

Aug 14 2009 09:18:35:937AM 1090814002 Matt Reinke The dither as seen on the H-alpha is on the divertor spectroscopy channels. This is going to be a problem for running our experiment. Need to get rid of it.

NEXT: try higher nl04 = 1.1

Aug 14 2009 09:41:40:993AM 1090814003 Matt Reinke Dither has been removed, but density programming a little wonky. Looks like the prop gain still set for helium.

NEXT: adjust density programming, still looking for nl04=1.1

Aug 14 2009 09:43:43:993AM 1090814003 Brian Labombard 3 -LSN, 1.0 MA, 5.4T, NL04 = 1.1 and rising
D-alpha dither gone.
But, feedback control on NL04 is set up for helium.
Next: try again with correct NL04 gain

Aug 14 2009 10:03:06:893AM 1090814005 Brian Labombard 5 -LSN, 1.0 MA, 5.4T, NL04 = 1.1 - very flat
ASP(+2) scanning 0.8, 1.0, 1.2

Next: puff N2, ASP deeper

Aug 14 2009 10:21:48:820AM 1090814006 Brian Labombard 6 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.1
ASP(+4) scanning 0.75, 1.0, 1.25

NINJA 568 torr, Trigger 0.8, Duration: 0.2
Capillary: K30-012, Torr-Liters: 4.8

Aug 14 2009 10:50:44:850AM 1090814007 Brian Labombard 7 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.1
ASP(+4) scanning 0.75, 1.0, 1.25
NINJA N2 567 torr, Trigger 0.8, Duration: 0.2
Capillary: D30-012, Torr-Liters: 5.2
See bump on CB-DivL

Aug 14 2009 10:51:08:003AM 1090814008 Brian Labombard 8 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.1
ASP(+4) scanning 0.75, 1.1, 1.35
NINJA N2 566 torr, Trigger 0.8, Duration: 0.2
Capillary: H30-012, Torr-Liters: 4.8
No perturbation on CB-DivL

Aug 14 2009 11:10:55:277AM 1090814009 Brian Labombard 9 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.1
ASP(+4) scanning 0.75, 1.1, 1.35
NINJA N2 565 torr, Trigger 0.8, Duration: 0.2
Capillary: B30-012, Torr-Liters: 5.2

Aug 14 2009 11:26:51:377AM 1090814010 Brian Labombard 10 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.1
ASP(+4) scanning 0.75, 1.1, 1.35
NINJA N2 564 torr, Trigger 0.8, Duration: 0.2
Capillary: F30-012, Torr-Liters: 5.1

Aug 14 2009 11:57:46:780AM 1090814011 Brian Labombard 11 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.1
ASP(+4) scanning 0.75, 1.1, 1.35
NINJA N2 564 torr, Trigger 0.8, Duration: 0.2
Capillary: K30-012, Torr-Liters: 4.8

Aug 14 2009 12:30:33:023PM 1090814012 Brian Labombard 12 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.1
ASP(+4) scanning 0.75, 1.1, 1.35
NINJA N2 563 torr, Trigger 0.8, Duration: 0.2
Capillary: D30-012, Torr-Liters: 5.2

Aug 14 2009 12:35:49:213PM 1090814013 Brian Labombard 13 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.1
ASP(+4) scanning 0.75, 1.1, 1.35
NINJA N2 562 torr, Trigger 0.8, Duration: 0.2
Capillary: H30-012, Torr-Liters: 4.95

Aug 14 2009 12:51:36:390PM 1090814014 Brian Labombard 14 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.1
Disrupted at 1.03 seconds
ASP(+4) scanning 0.75, 1.1, 1.35
NINJA N2 561 torr, Trigger 0.8, Duration: 0.2
Capillary: B30-012, Torr-Liters: 5.2

Aug 14 2009 12:51:47:500PM 1090814015 Brian Labombard 15 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.1
No probes scanning
NINJA N2 561 torr, Trigger 0.8, Duration: 0.2
Repeat capillary: B30-012, Torr-Liters: 5.1

Aug 14 2009 01:04:21:333PM 1090814016 Brian Labombard 16 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.1
ASP(+4) scanning 0.75, 1.1, 1.35
NINJA N2 559 torr, Trigger 0.8, Duration: 0.2
Capillary: F30-012, Torr-Liters: 5.1

Next: baseline shot, no puff

Aug 14 2009 01:23:44:030PM 1090814017 Brian Labombard 17 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.1
ASP(+4) scanning 0.75, 1.1, 1.35
No gas puff

Go to NL04 ~ 1.4

Aug 14 2009 01:50:02:040PM 1090814018 Brian Labombard 18 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.4
No gas puff. No probes scanning.
Disrupts

Aug 14 2009 01:54:01:273PM 1090814019 Brian Labombard 19 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.4
No gas puff. No probes scanning.

Next: puff N2 sequence

Physics Operator Comments

Aug 13 2009 03:08:27:693PM Ron Parker -----------------------------------
Engineering Setup for Run 1090814
-----------------------------------

MP#563 "Toroidal asymmetry of impurity seeding in support of ITER
divertor gas injection requirements"

Session leader: LaBombard
Physop: Parker

Run begins at 09:00 and ends at 17:00

Power systems as on: 1090806032

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)
fill B-side upper with 40 psi D2 Hybrid enabled (PG2)
fill B-main (C-side) with 40 psi D2 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
ICRF(yes/no): no
LH(yes/no): no
DNB(yes/no): no
Cryopump (yes/no): no

Vessel temperature: 60/60/60 overnight

------------------------------
ECDC Parameters
------------------------------
gas and pressure: D2 at 2e-4 Torr
sweep: 44/45/103 cm
scan: 20/120 s

---------
Shot Plan
---------

A. Set up 1.0 MA, 5.4 tesla, NL04 ~ 1.0e20 m-2
Take a shot without N2 injection.
Set up NINJA to puff N2 starting at 0.8 seconds for 0.2 seconds
duration.
Verify that N diagnostic signals are good: Chromex, VUV, CXRS (NV)
Run through the capillary sequence (one shot for each):
K30-012
D30-012
H30-012
B30-012
F30-012
Take a shot without N2 puff.
Run through capillary sequence again (or a sparser set)

B. Increase density to achieve partial detachment prior to puff (NL04
~ 1.2)
Run through the capillary sequence.

C. Change to helium, NL04 ~ 1.0e20
Run through the capillary sequence.

Aug 14 2009 09:14:20:233AM 1090814001 Ron Parker Shot 1 fizzled.

Aug 14 2009 09:21:11:470AM 1090814001 Ron Parker Good morning!

So far, so good -- no holdup, first shot should be shortly after 9:00.

They say that this will be a boring run for the PhysOp -- all Ohmic plasmas with a lot of repeats. But we'll see.

Aug 14 2009 09:18:11:470AM 1090814002 Ron Parker Problem with log book updating

Aug 14 2009 09:18:28:250AM 1090814002 Ron Parker Shot 2 ran full length and tracked the target parameters.

Aug 14 2009 09:24:46:317AM 1090814002 Ron Parker For shot 3, density will be increased to 1.1e20 in order to try to get rid of Halpha dithering.

Aug 14 2009 09:34:00:833AM 1090814003 Ron Parker Raising the density seems to have marginally helped regarding the Halpha dither.

Shot 3 ran full length.

Aug 14 2009 09:42:12:383AM 1090814003 Ron Parker Oh oh, density feedback gain was set for Helium (2), not D2 (8)

Correct for next shot and reset programmed density to 1.1

Aug 14 2009 09:43:38:900AM 1090814004 Ron Parker Fizzle!

Aug 14 2009 10:05:02:377AM 1090814005 Ron Parker Shot 5 ran full length, density was reasonably flat at ~ 1.15e20. Severe MARFE occurs early during rampup.Initial fill gas was reduced to 21 ms pulse.

We'll try to maintain this shot for as the N2 injection location is varied.

Aug 14 2009 10:21:48:917AM 1090814006 Ron Parker Shot 6 ran full length.

BTW, we had a cell access to replace RGA filament and power room access for ICRH between shots 5 and 6.

Aug 14 2009 10:22:47:980AM 1090814006 Ron Parker There is a delay while computers are reset.

Aug 14 2009 10:27:27:870AM 1090814006 Ron Parker Computers are ready, so here we go for shot 7.

Aug 14 2009 10:35:07:153AM 1090814007 Ron Parker Shot 7 ran full length.

Aug 14 2009 11:01:14:900AM 1090814008 Ron Parker Shot 8 ran full length

Aug 14 2009 11:08:07:933AM 1090814009 Ron Parker Shot 9 ran full length.

Aug 14 2009 11:24:32:533AM 1090814010 Ron Parker Shot 10 ran full length.

Aug 14 2009 11:52:08:840AM 1090814010 Ron Parker Power room entry to anchor commutation resistor cables (~ 30 min delay).

Aug 14 2009 11:53:48:327AM 1090814011 Ron Parker Shot 11 ran full length.

Aug 14 2009 12:07:32:863PM 1090814012 Ron Parker Shot 12 ran full length but disrupted during rampdown @ ~ 400 kA.

Aug 14 2009 12:26:34:867PM 1090814013 Ron Parker Shot 13 ran full length.

Aug 14 2009 12:35:58:040PM 1090814014 Ron Parker Oh-oh, shot 14 disrupted @ ~ 1 s.

Aug 14 2009 12:55:06:080PM 1090814015 Ron Parker Shot 15 ran full length. Gas fill pulse was reduced to 18 ms in attempt to avoid the "post-disruption fizzle". For next shot, back to 22 ms pulse width for fill gas.

This should be the last shot in this sequence.

Aug 14 2009 01:05:43:460PM 1090814016 Ron Parker Shot 16 ran length and was the last in this sequence. Next: Same shot, but No N2 puff to get baseline.

Aug 14 2009 01:23:05:717PM 1090814017 Ron Parker Shot 17 ran full length and provided the baseline shot.

Next: Increase nl_04 to 1.4e20.

Aug 14 2009 01:39:59:910PM 1090814018 Ron Parker Shot 18 disrupted just before rampdown, apparently because of railing of power supplies (Steve's observation). Limits will be changed according to original specification.

Repeat shot with 4 ms less gas pulse (18 ms) to account for disruption

Aug 14 2009 01:54:42:383PM 1090814019 Ron Parker Shot 19 ran full length, at least until 300 kA in rampdown.

Next: Same shot, but N2 puffs begin.

Aug 14 2009 02:01:44:760PM 1090814020 Ron Parker TF fault -- more to come.

Aug 14 2009 02:50:30:123PM 1090814020 Ron Parker Problem seems to be a ground fault in the TF circuit, either the bus or the magnet itself. Still under investigation.

Aug 14 2009 04:02:20:450PM 1090814020 Ron Parker The problem is serious enough to cause termination of the run.

Engineering Operator Comments

Shot Time Type Status Comment

3 09:29:03:317AM Plasma Ok

4 09:41:41:523AM Plasma Ok

5 09:54:58:607AM Plasma Ok

6 10:10:58:990AM Test Bad

7 10:28:53:590AM Plasma Ok

8 10:44:31:470AM Plasma Ok

9 11:05:55:573AM Plasma Ok

10 11:21:21:360AM Plasma Ok

11 11:51:27:247AM Plasma Ok

12 12:04:05:747PM Plasma Ok

13 12:19:30:240PM Plasma Ok

14 12:32:08:883PM Plasma Ok

15 12:46:10:687PM Plasma Ok

16 12:58:37:487PM Plasma Ok

17 01:15:09:243PM Plasma Ok

18 01:27:56:483PM Plasma Ok

19 01:45:39:660PM Plasma Ok

20 01:59:19:887PM Plasma Bad TF Fast Ground Fault

System Availability

Aug 14 2009 08:58:23:913AM

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 7 horizontal views spread out R_maj=[0.72-0.9m], 3 cm over the tokamak midplane (beam) Jul 09 2009 05:12PM (bespam) Bill Rowan Beam Emission Spectroscopy bespam,liao,rowan
Bolometers yes 2pi (diode+foil), AXA, AXJ, WB3AX, WB4AX, LEDGE-AX working fine. MID/LEDGE/DIV foils still need calibrations applied Jul 28 2009 09:59AM (mlreinke) Matt Reinke Bolometers hutch,mlreinke
Boronization no Bottle Removed from the Cell, Piezo box on Igloo Removed. System in safe mode for In-Vessel Access May 30 2008 02:25PM (dekow) Jim Irby Boronization dekow,irby
CNPA no Single channel CNPA available as of 12/1707 Jun 10 2009 10:22AM (twf) Ron Parker Compact Neutral Analyzer parker
Cryopump - Upper Divertor no Cyopump hardware is not yet reinstalled in the cell. Jul 14 2009 09:21PM (labombard) Brian LaBombard Upper Divertor Cryopump irby,labombard
CXRS yes The 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 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 and operating; not yet calibrated Jul 14 2009 02:22PM (marmar) Earl Marmar Visible Bremsstrahlung marmar
Disruption Mitigation no safely disabled; ready to be dismantled May 28 2008 10:22AM (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 power locked & tagged out; gate valve disabled May 28 2008 10:03AM (granetz) Robert Granetz Diagnostic Neutral Beam dterry,granetz,gung
ECDC no 6/10/09 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 Activity Jun 10 2009 02:35PM (dekow) Jim Irby 2.45 GHz, 3 kW, discharge cleaning system dekow,irby,pfeiffer
FRC-ECE yes The lower freq. 16 channels are ready. Still need calibration and signal level adjustments Jul 14 2009 12:15PM (phillips) Perry Phillips Heterodyne ECE-32 channels phillips
G-Side Ratiomatic yes Gauge installed. Problem with controller - signal noisy. Jul 14 2009 09:11PM (labombard) Brian LaBombard G-side ratiomatic ionization gauge labombard,toland
Glow Discharge no 6/10/09: 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 Access Jun 10 2009 01:47PM (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. Jul 28 2009 04:23PM (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 poses no safety hazard for people working around the machine Jun 18 2009 01:04PM (marmar) Earl Marmar H/D Ratio marmar
HEAT no Disconnect 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 Jr yes Hirex-Jr has been installed and tested Jun 17 2009 11:54AM (rice) John Rice High Resolution X-Ray ince,rice
Hirex Sr yes currently only one detector is operational, off-axis He-like argon emission Jul 14 2009 10:01AM (rice) John Rice High Resolution X-Ray ince,rice
HXR no In safe mode (high voltage turned off) May 27 2008 09:19PM (schmidt) Ron Parker Hard X-Ray Array parker,schmidt
ICRF D-Antenna yes operational at 80 MHz Jul 21 2009 04:49PM (wukitch) Steve Wukitch D-port antenna wukitch,ylin
ICRF E-Antenna yes antenna and FFT operational Jul 21 2009 04:49PM (wukitch) Steve Wukitch E-port antenna wukitch,ylin
ICRF J-Antenna yes available for conditioning and testing Jul 21 2009 04:50PM (wukitch) Steve Wukitch J-port antenna wukitch,ylin
Lower Hybrid no Breaker locked and tagged out. Waveguide disassembly started. Open Waveguides have been shorted. May 28 2008 09:47AM (dterry) Ron Parker Lower Hybrid dterry,parker,wallaceg
LPI no Beam line removed May 30 2008 02:09PM (bose) Earl Marmar Lithium Pellet Injector bose,marmar
Ly-alpha yes Midplane, WB4-LY, LEDGE-LY all collecting data but processed data not in tree. WB1-LY not attached. Jul 07 2009 01:01PM (mlreinke) Matt Reinke Lyman alpha cameras labombard,mlreinke
McPherson yes Collecting spectra but control system problem is not reporting voltages to tree Jul 28 2009 10:00AM (mlreinke) Jim Terry VUV Spectrometer mlreinke,terry
Michelson yes Operational. Recalibrated 7/27/09. Jul 28 2009 04:22PM (hubbard) Amanda Hubbard ECE Te Profiles hubbard,schmidt
MKS yes Gauges are on. B-bottom is not operating - bad sensor head? Jul 14 2009 09:12PM (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 Neutron detectors are calibrated and ready to go. Voltages will be turned on prior to first plasma. Jun 10 2009 10:35AM (fiore) Catherine Fiore Neutron Detectors fiore
Neuts and Hards yes Operational --- Uncalibrated and needs to be positioned at port Jun 25 2009 05:08PM (irby) Jim Irby X-Ray/Neutron Detector at K-Hor irby
NINJA no Capillaries were tested in-vessel. Plenum has a leak and needs fixing. Jul 14 2009 09:14PM (labombard) Brian LaBombard NINJA gas puff labombard,terry
PCI yes System is operable. Channels 7 and 9 (of 32) are dead. Aug 05 2009 02:48PM (edlund) Miklos Porkolab Phase Contrast Imaging arai,edlund,ennever,ntsujii,porkolab
Penning Gauges yes High voltage is enabled (on during INIT, off during RECOOL). Jun 30 2009 09:42PM (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 Checked and Operational as of 06/18/09 Jun 19 2009 08:04AM (irby) Gary Dekow feeds all the other supplies cochran,dekow,dterry,irby
Power - PEI yes Operational ---- ECDC running as required Jun 19 2009 08:06AM (irby) Gary Dekow PEI System cochran,dekow,dterry,irby
Power - TMX yes Checked out and ready for Magnet Tests as of 06/18/09 Jun 19 2009 08:07AM (irby) Gary Dekow Ef2s,. EFCs and A-Coils byford,cochran,dekow,dterry,irby
Power Systems yes Checked out and ready for Magnet Tests as of 06/18/09 Jun 19 2009 08:07AM (irby) Jim Irby C-Mod Magnet Supplies byford,cochran,dekow,dterry,irby
Probe Array - ISD yes Array is operational with new cPCI data system. Probe 14 has open circuit. Jul 14 2009 09:17PM (labombard) Brian Labombard Inner Lower Divertor Probe Array labombard
Probe Array - LH no LH launcher not installed. Cables are unplugged at the A-port rack. Jul 14 2009 09:16PM (labombard) Brian LaBombard Lower Hybrid Probe Array labombard
Probe Array - OSD yes Array is operational with new cPCI data system. Jul 14 2009 09:16PM (labombard) Brian LaBombard Outer Lower Divertor Probe Array labombard
Probe Array - UDIV yes Array is operational with new cPCI data system. Probe 13 has a bad cable (open). Jul 14 2009 09:17PM (labombard) Brian LaBombard Upper Divertor Probe Array labombard
Reflectometer yes As 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 Marmar Reflectometer dominguez,marmar
Scanning Probe - ASP yes Probe is operational. Needs plasma conditioning. Jul 14 2009 09:18PM (labombard) Brian LaBombard A-Port Scanning Probe labombard
Scanning Probe - FSP yes Probe is operational. Needs plasma conditioning. Jul 14 2009 09:18PM (labombard) Brian LaBombard F-Port Scanning Probe labombard
Scanning Probe - WASP yes System connected to A-port WASP. Needs plasma testing. Jul 14 2009 09:19PM (labombard) Brian LaBombard Inner Wall Scanning Probe labombard,nsmick
Sparker yes Sparker now at K-Hor. Set for 100 uA of current. Will up to 200 uA before first plasma Jun 18 2009 01:01PM (irby) Jim Irby Field Emission Preionization for C-Mod dekow,irby,parkin
TCI yes System restarted and aligned. Several chords available including NL04. Density Feedback available. Ready for plasma. Jun 18 2009 09:15AM (murray) Jim Irby Two-Color Interferometer irby,murray
TS - Core yes 2 lasers working. 15 spatial channels operational. Initial (NOT final) Te calibration applied. ***No ne calibration yet*** Aug 05 2009 08:44AM (jwhughes) Jerry Hughes Core Thomson scattering jwhughes,yma,zhang
TS - Edge yes Operational, Te calibration is thought to be good. Density is ***uncalibrated*** Aug 11 2009 02:31PM (jwhughes) Jerry Hughes Millimeter resolution edge Thomson scattering jwhughes,yma,zhang
Vispec no 350 and 670 nm, 4 spatial channels Nov 28 2007 09:58AM (agraf) Alex Graf Visible Spectrometer agraf
XTOMO yes cables attached, DAQ test run, ready for first plasma Jun 17 2009 03:42PM (mlreinke) Bob Granetz X-Ray Tomography granetz,mlreinke

Session Leader Comments
Aug 14 2009 09:03:53:790AM	1090814001	Matt Reinke	Start with the nl04=1.0 target. Load 1090806032, no N2 puff. Fizzle...
Aug 14 2009 09:18:35:937AM	1090814002	Matt Reinke	The dither as seen on the H-alpha is on the divertor spectroscopy channels. This is going to be a problem for running our experiment. Need to get rid of it. NEXT: try higher nl04 = 1.1
Aug 14 2009 09:41:40:993AM	1090814003	Matt Reinke	Dither has been removed, but density programming a little wonky. Looks like the prop gain still set for helium. NEXT: adjust density programming, still looking for nl04=1.1
Aug 14 2009 09:43:43:993AM	1090814003	Brian Labombard	3 -LSN, 1.0 MA, 5.4T, NL04 = 1.1 and rising D-alpha dither gone. But, feedback control on NL04 is set up for helium. Next: try again with correct NL04 gain
Aug 14 2009 10:03:06:893AM	1090814005	Brian Labombard	5 -LSN, 1.0 MA, 5.4T, NL04 = 1.1 - very flat ASP(+2) scanning 0.8, 1.0, 1.2 Next: puff N2, ASP deeper
Aug 14 2009 10:21:48:820AM	1090814006	Brian Labombard	6 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.1 ASP(+4) scanning 0.75, 1.0, 1.25 NINJA 568 torr, Trigger 0.8, Duration: 0.2 Capillary: K30-012, Torr-Liters: 4.8
Aug 14 2009 10:50:44:850AM	1090814007	Brian Labombard	7 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.1 ASP(+4) scanning 0.75, 1.0, 1.25 NINJA N2 567 torr, Trigger 0.8, Duration: 0.2 Capillary: D30-012, Torr-Liters: 5.2 See bump on CB-DivL
Aug 14 2009 10:51:08:003AM	1090814008	Brian Labombard	8 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.1 ASP(+4) scanning 0.75, 1.1, 1.35 NINJA N2 566 torr, Trigger 0.8, Duration: 0.2 Capillary: H30-012, Torr-Liters: 4.8 No perturbation on CB-DivL
Aug 14 2009 11:10:55:277AM	1090814009	Brian Labombard	9 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.1 ASP(+4) scanning 0.75, 1.1, 1.35 NINJA N2 565 torr, Trigger 0.8, Duration: 0.2 Capillary: B30-012, Torr-Liters: 5.2
Aug 14 2009 11:26:51:377AM	1090814010	Brian Labombard	10 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.1 ASP(+4) scanning 0.75, 1.1, 1.35 NINJA N2 564 torr, Trigger 0.8, Duration: 0.2 Capillary: F30-012, Torr-Liters: 5.1
Aug 14 2009 11:57:46:780AM	1090814011	Brian Labombard	11 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.1 ASP(+4) scanning 0.75, 1.1, 1.35 NINJA N2 564 torr, Trigger 0.8, Duration: 0.2 Capillary: K30-012, Torr-Liters: 4.8
Aug 14 2009 12:30:33:023PM	1090814012	Brian Labombard	12 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.1 ASP(+4) scanning 0.75, 1.1, 1.35 NINJA N2 563 torr, Trigger 0.8, Duration: 0.2 Capillary: D30-012, Torr-Liters: 5.2
Aug 14 2009 12:35:49:213PM	1090814013	Brian Labombard	13 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.1 ASP(+4) scanning 0.75, 1.1, 1.35 NINJA N2 562 torr, Trigger 0.8, Duration: 0.2 Capillary: H30-012, Torr-Liters: 4.95
Aug 14 2009 12:51:36:390PM	1090814014	Brian Labombard	14 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.1 Disrupted at 1.03 seconds ASP(+4) scanning 0.75, 1.1, 1.35 NINJA N2 561 torr, Trigger 0.8, Duration: 0.2 Capillary: B30-012, Torr-Liters: 5.2
Aug 14 2009 12:51:47:500PM	1090814015	Brian Labombard	15 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.1 No probes scanning NINJA N2 561 torr, Trigger 0.8, Duration: 0.2 Repeat capillary: B30-012, Torr-Liters: 5.1
Aug 14 2009 01:04:21:333PM	1090814016	Brian Labombard	16 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.1 ASP(+4) scanning 0.75, 1.1, 1.35 NINJA N2 559 torr, Trigger 0.8, Duration: 0.2 Capillary: F30-012, Torr-Liters: 5.1 Next: baseline shot, no puff
Aug 14 2009 01:23:44:030PM	1090814017	Brian Labombard	17 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.1 ASP(+4) scanning 0.75, 1.1, 1.35 No gas puff Go to NL04 ~ 1.4
Aug 14 2009 01:50:02:040PM	1090814018	Brian Labombard	18 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.4 No gas puff. No probes scanning. Disrupts
Aug 14 2009 01:54:01:273PM	1090814019	Brian Labombard	19 -LSN, 1.0 MA, 5.4T, NL04 ~ 1.4 No gas puff. No probes scanning. Next: puff N2 sequence

Physics Operator Comments
Aug 13 2009 03:08:27:693PM		Ron Parker	----------------------------------- Engineering Setup for Run 1090814 ----------------------------------- MP#563 "Toroidal asymmetry of impurity seeding in support of ITER divertor gas injection requirements" Session leader: LaBombard Physop: Parker Run begins at 09:00 and ends at 17:00 Power systems as on: 1090806032 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) fill B-side upper with 40 psi D2 Hybrid enabled (PG2) fill B-main (C-side) with 40 psi D2 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 ICRF(yes/no): no LH(yes/no): no DNB(yes/no): no Cryopump (yes/no): no Vessel temperature: 60/60/60 overnight ------------------------------ ECDC Parameters ------------------------------ gas and pressure: D2 at 2e-4 Torr sweep: 44/45/103 cm scan: 20/120 s --------- Shot Plan --------- A. Set up 1.0 MA, 5.4 tesla, NL04 ~ 1.0e20 m-2 Take a shot without N2 injection. Set up NINJA to puff N2 starting at 0.8 seconds for 0.2 seconds duration. Verify that N diagnostic signals are good: Chromex, VUV, CXRS (NV) Run through the capillary sequence (one shot for each): K30-012 D30-012 H30-012 B30-012 F30-012 Take a shot without N2 puff. Run through capillary sequence again (or a sparser set) B. Increase density to achieve partial detachment prior to puff (NL04 ~ 1.2) Run through the capillary sequence. C. Change to helium, NL04 ~ 1.0e20 Run through the capillary sequence.
Aug 14 2009 09:14:20:233AM	1090814001	Ron Parker	Shot 1 fizzled.
Aug 14 2009 09:21:11:470AM	1090814001	Ron Parker	Good morning! So far, so good -- no holdup, first shot should be shortly after 9:00. They say that this will be a boring run for the PhysOp -- all Ohmic plasmas with a lot of repeats. But we'll see.
Aug 14 2009 09:18:11:470AM	1090814002	Ron Parker	Problem with log book updating
Aug 14 2009 09:18:28:250AM	1090814002	Ron Parker	Shot 2 ran full length and tracked the target parameters.
Aug 14 2009 09:24:46:317AM	1090814002	Ron Parker	For shot 3, density will be increased to 1.1e20 in order to try to get rid of Halpha dithering.
Aug 14 2009 09:34:00:833AM	1090814003	Ron Parker	Raising the density seems to have marginally helped regarding the Halpha dither. Shot 3 ran full length.
Aug 14 2009 09:42:12:383AM	1090814003	Ron Parker	Oh oh, density feedback gain was set for Helium (2), not D2 (8) Correct for next shot and reset programmed density to 1.1
Aug 14 2009 09:43:38:900AM	1090814004	Ron Parker	Fizzle!
Aug 14 2009 10:05:02:377AM	1090814005	Ron Parker	Shot 5 ran full length, density was reasonably flat at ~ 1.15e20. Severe MARFE occurs early during rampup.Initial fill gas was reduced to 21 ms pulse. We'll try to maintain this shot for as the N2 injection location is varied.
Aug 14 2009 10:21:48:917AM	1090814006	Ron Parker	Shot 6 ran full length. BTW, we had a cell access to replace RGA filament and power room access for ICRH between shots 5 and 6.
Aug 14 2009 10:22:47:980AM	1090814006	Ron Parker	There is a delay while computers are reset.
Aug 14 2009 10:27:27:870AM	1090814006	Ron Parker	Computers are ready, so here we go for shot 7.
Aug 14 2009 10:35:07:153AM	1090814007	Ron Parker	Shot 7 ran full length.
Aug 14 2009 11:01:14:900AM	1090814008	Ron Parker	Shot 8 ran full length
Aug 14 2009 11:08:07:933AM	1090814009	Ron Parker	Shot 9 ran full length.
Aug 14 2009 11:24:32:533AM	1090814010	Ron Parker	Shot 10 ran full length.
Aug 14 2009 11:52:08:840AM	1090814010	Ron Parker	Power room entry to anchor commutation resistor cables (~ 30 min delay).
Aug 14 2009 11:53:48:327AM	1090814011	Ron Parker	Shot 11 ran full length.
Aug 14 2009 12:07:32:863PM	1090814012	Ron Parker	Shot 12 ran full length but disrupted during rampdown @ ~ 400 kA.
Aug 14 2009 12:26:34:867PM	1090814013	Ron Parker	Shot 13 ran full length.
Aug 14 2009 12:35:58:040PM	1090814014	Ron Parker	Oh-oh, shot 14 disrupted @ ~ 1 s.
Aug 14 2009 12:55:06:080PM	1090814015	Ron Parker	Shot 15 ran full length. Gas fill pulse was reduced to 18 ms in attempt to avoid the "post-disruption fizzle". For next shot, back to 22 ms pulse width for fill gas. This should be the last shot in this sequence.
Aug 14 2009 01:05:43:460PM	1090814016	Ron Parker	Shot 16 ran length and was the last in this sequence. Next: Same shot, but No N2 puff to get baseline.
Aug 14 2009 01:23:05:717PM	1090814017	Ron Parker	Shot 17 ran full length and provided the baseline shot. Next: Increase nl_04 to 1.4e20.
Aug 14 2009 01:39:59:910PM	1090814018	Ron Parker	Shot 18 disrupted just before rampdown, apparently because of railing of power supplies (Steve's observation). Limits will be changed according to original specification. Repeat shot with 4 ms less gas pulse (18 ms) to account for disruption
Aug 14 2009 01:54:42:383PM	1090814019	Ron Parker	Shot 19 ran full length, at least until 300 kA in rampdown. Next: Same shot, but N2 puffs begin.
Aug 14 2009 02:01:44:760PM	1090814020	Ron Parker	TF fault -- more to come.
Aug 14 2009 02:50:30:123PM	1090814020	Ron Parker	Problem seems to be a ground fault in the TF circuit, either the bus or the magnet itself. Still under investigation.
Aug 14 2009 04:02:20:450PM	1090814020	Ron Parker	The problem is serious enough to cause termination of the run.

Engineering Operator Comments
Shot	Time	Type	Status	Comment
3	09:29:03:317AM	Plasma	Ok
4	09:41:41:523AM	Plasma	Ok
5	09:54:58:607AM	Plasma	Ok
6	10:10:58:990AM	Test	Bad
7	10:28:53:590AM	Plasma	Ok
8	10:44:31:470AM	Plasma	Ok
9	11:05:55:573AM	Plasma	Ok
10	11:21:21:360AM	Plasma	Ok
11	11:51:27:247AM	Plasma	Ok
12	12:04:05:747PM	Plasma	Ok
13	12:19:30:240PM	Plasma	Ok
14	12:32:08:883PM	Plasma	Ok
15	12:46:10:687PM	Plasma	Ok
16	12:58:37:487PM	Plasma	Ok
17	01:15:09:243PM	Plasma	Ok
18	01:27:56:483PM	Plasma	Ok
19	01:45:39:660PM	Plasma	Ok
20	01:59:19:887PM	Plasma	Bad	TF Fast Ground Fault