Alcator C-Mod Run 1071220 Information

Miniproposals

Miniproposal: 419

Date Filed: 4/8/2005

Title: Fiducial wall pumping measurements for comparing operating conditions

First Author: Bruce Lipschultz

Session Leader: Bruce Lipschultz (shots 1-27)

Miniproposal: 450

Date Filed: 4/14/2006

Title: Disruption mitigation using high pressure gas-mixture injection

First Author: Mohammad Bakhtiari

Session Leader: Robert Granetz (shots 18-30)

Operators
Session leader(s):	Bruce Lipschultz,Robert Granetz
Physics operator(s):
Engineering operator(s):	Bill Cochran,Andy Pfeiffer,Ed Fitzgerald

Engineering Operator Run Comment
MP #450 -- Disruption mitigation w/mixed gas jet

Session Leader Plans

Entered: Dec 19 2007 02:39:07:673PM

Author: Robert Granetz

MP #450 -- Disruption mitigation w/mixed gas jet

Session leader: R. Granetz
Physics operator: R. Parker

ECDC overnight and bake at 60 C.

NOTE: WE WILL NEED AN HOUR IN THE CELL TO SWITCH OVER TO THIS HALF-DAY GAS
JET DISRUPTION RUN.

Power systems as on 1071212013 (1.0 MA, 5.4 T, LSN fiducial)

A-coil configuration: normal [+Dtop -Dbot -Jtop +Jbot] and enabled.

Gas Setup:
fill B-Top with 6 psi D2 Hybrid enabled (PG4)
fill B-side lower with 1 psi Ar + 2 psi Ne Hybrid DISABLED (PG1)
leave B-side upper as is Hybrid disabled
fill B-main (C-side) with 40 psi D2 Hybrid enabled (PG3)
No NINJA for this run.

Gas jet plenum has been filled with an argon/helium mixture at 70 bar. The
mixture ration is 15% argon and 85% helium.

Torvac setup: unnecessary diagnostic gate valves (ECE) should be kept
closed on all shots. The torus valves should remain OPEN during and after
the shot.

Enable the following, assuming no vacuum problems:
Z-bolo shutters, VUV (yes, enable the VUV gate valve)

Necessary diagnostics:
Two pi bolometers
Halo current Rogowskis
SX arrays with fast sampling window (t=0.795 to 0.820 s)

-------------------------------------------------------------------------------
ICRF Setup: We'll need a reproducible 2-3 MW shortly after we begin this MP.

LHCD Setup: We might want LHCD late in the run in order to provide a seed
of runaway electrons.

-------------------------------------------------------------------------------
Run plan:

Start with 1071212013 (1 MA, 5.4 T, LSN). Adjust nl_04 to 1.0e20 m-2.
Have one shot without the gas jet, just to get the plasma. The gas jet
plenum will be filled with a mixture of 15% argon and 85% helium at 70
bar. Starting on the 2nd shot, we will fire a 2 ms gas jet pulse at
t=0.800 s. Observe typical disruption-relevant signals (halos, Erad/Etot,
drop in plenum pressure, etc). Do NOT top off the pressure in the plenum
after each shot, but rather run a sequence of gas jet disruptions with less
and less pressure in the plenum on each shot. After the plenum pressure
gets sufficiently low, refill the plenum to 70 bar and repeat the sequence
to check reproducibility.

If we get done with all that, try turning on some LHCD to get a seed of
runaway electrons, and see what happens to the hard x-ray signal during a
gas-jet-triggered current quench.

Entered: Dec 19 2007 03:35:33:740PM

Author: Bruce Lipschultz

MP 419: Fiducial wall pumping measurements for comparing operating conditions

1/2 day allocated

Goal of obtaining a density scan for the upper divertor with/without pumping. Probably should be 800 kA plasmas given the power supply limits run into last week at 1 MA. Unlikely to be able to get past nl04 of 1.0 or 1.2 with pumping.

shot plan: 3 USN 800 kA discharges (2 un-pumped, one pumped, n_detach~0.33*n_Greenwald = 1.9e20) at each of the following densities: nl04=0.6, 0.8, 1.0, 1.2 (1.4 if still not detached). Start with 1070627001. Gate valves closed for 300+s. No Ar or other impurity puff, no ICRF. Un-pumped discharges without NINJA. 25PSI in NINJA fill.

Physics Operators Plans

Entered: Dec 19 2007 04:31:28:127PM

Author: Ron Parker

Engineering setup for Thursday 20 Dec 2007

MP#419: Fiducial wall pumping measurements for comparing operating conditions
MP#450: Disruption mitigation with mixed gas jet

SL: MP#419, B. Lipschultz; MP#450, R. Granetz
PO: R. Parker

ECDC overnight in D2 and bake at 60 C. Stop D2 ECDC by 6:00 am and begin He ECDC for 2 hours, ending at 8:00.

Run will start at 09:00 and end at 17:00.

Power systems as on 1071219001

A-coil configuration: +Dtop -Dbot -Jtop +Jbot; Enabled (standard
configuration)

Gas Setup:
fill B-Top with 6 psi D2 Hybrid enabled (PG4)
fill B-side lower with 1 psi Ar +2 psi He 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 25 psi D2 INITIALLY DISABLED

Enable the following gate valves and shutters, assuming no vacuum problems:
ECE, VUV, Z-bolo (Do not enable DNB gate valve.)

Torvac setup: gate valve closed 300 s after the shot (during MP#419)

Specific diagnostics: standard set

-------------------------------------------------------------------------------
ICRF Setup: required only for MP#450, 2-3 MW needed

LH Setup: might be needed late in run; standby

DNB: no

Cryopump: standby, ready for MP#419
-------------------------------------------------------------------------------
Run plan: Start with 1071207027 (Segment 1, possibly with modified RCUR, normal pulse gas) and 1070627001 (Segment 2 -- reset magnetic predictors) and go from there.

Scan density as defined in SL shot plan.

Session Leader Summaries

Entered: Dec 20 2007 04:22:43:223PM

Author: Bruce Lipschultz

MP 419: Fiducial wall pumping measurements for comparing operating conditions

Goal of obtaining a density scan for the upper divertor with/without pumping. We were fairly successful at covering the density range we wanted. Unfortunately we did not get to spend enough time at nl04=0.8 where the retention was changing over the 2 discharges we had. Also, we did not really accomplish the cryopump part of the proposal.

All shots were 800 kA USN (except shot 1). nl04 = 0.6, 0.7, 0.8, 1.0, 1.2.
We observed retention at nl04=0.7 (shots 1-4):10.5, 5.3, 7, & 4.3 torr-l (out of 17.6, 12.7, 16.3, 14 injected). We ignore shot 1 as it was LSN and just after 2 hours of He ECDC.

We then lowered the density to nl04=0.6 for 2 discharges (5 & 6), the second of which was pumped. Retention was 0.4 and 0.6 Torr-l respectively (out of 9.1 & 15 injected). Don't know whether we did not wait long enough or this is real.

We then went to nl04 = 0.8e20. The retention for shots 9 & 10 was 9 and 3 Torr-l respectively out of 20 and 13.4 injected.

Shots 11 & 13 with nl04 = 1.0: 7.2 and 7.85 Torr-l rspectively out of 28.3/28.7 injected.

Lastly shots 16 & 17 were at nl04 = 1.2. We had small disruptions at around 250 kA. The retention was 10.6 & 9.3 Torr-l respectively (47.7 & 46.5 injected).

So the retention rose and leveled off. When normalized to injection it dropped. But we need to normalize to ion flux. We need to develop an analysis program for that.

Upper divertor profiles: For the lowest densities the inner divertor (upper) was already high recylcing (e.g. shot 4) where the density was ~6e20 on probe 4 (rho~ 1 mm). The outer divertor had low densities at that nebar, the maximum was between 5e19 and 1.5e20. When the density was dropped at shot 5 (from shot 4) the ne at the inner and outer divertor dropped by a factor of 3 or more!

At nl04 = 0.8 the densities at both inner and outer divertors increase, the inner reaching 1.e21. For nl04=1.0 the inner divertor detaches and the outer divertor is probably reaching its maximum density (maybe already starting to detach).

Finally, at the highest densities the outer divertor is definitely losing pressure compared to SOL profiles.

Caveat - The outer divertor pressure profile at low densities did not match SOL probe measurements.

PS - after our part of the run Brian and I worked on the NINJa calibration. The large volume (extra nipple added on to add volume for puffing) was measured previously. We used its volume to calibrate the volume between it and the machine by filling the large volume and then opening it to the total volume and measuring the pressure drop.

Entered: Dec 20 2007 06:02:13:653PM

Author: Robert Granetz

Run summary for Thursday 20 Dec 2007

MP#450 Gas jet disruption mitigation with Ar/He gas mixtures

Session leader: R. Granetz
Physics operator: R. Parker

This experiment used half the run day (13:00-17:00).

This was the first gas jet disruption mitigation in over a year, and the
gas jet hardware worked perfectly. The gas mixture was 15% argon + 85%
helium. The goal was to start at 70 bar with a 1.5 ms pulse, and gradually
decrease the amount of injected gas shot-to-shot by not refilling the
plenum after each shot. Mitigation effectiveness was measured by the
amount of halo current, and by the radiated energy fraction. This plan had
to be modified somewhat because we had a number of fizzles, which is rather
uncharacteristic for the gas jet runs, at least with a boronized machine
(which we have not done yet this campaign). So we settled for several
shots with the standard injection of 9 bar x 300 ml = 270 Pa-m3 = 6.5e22
atoms, and several shots with significantly less (6-6.5 bar and 4.7 bar).
All three quantities resulted in mitigation of halo currents, although the
mitigation was not as good at the lowest injection amount. The radiated
energy fractions were lower than in the past, ranging between 40 and 46%,
with no obvious dependence on the injected amount. With an injection of 6
bar, the machine shot cycle was essentially the same as for any non-gas-jet
run. The xtomo arrays were getting nice profiles at 50 kHz sampling, and
this can tell us a lot about how far the plasma moved before quenching,
which could be another measure of mitigation.

The last few shots of the day were devoted to checking on the idea of using
LH to provide a seed of fast electrons which then results in runaways
during the quench. The last shot (30) had plenty of LH-generated hard
x-rays, but I don't think the gas jet-induced disruptions led to any
amplification. Rather, they seem to dump the runaways. We'll have to look
into this in much more detail.

Physics Operator Summaries

Entered: Dec 20 2007 05:51:02:693PM

Author: Ron Parker

A pretty good run. Machine started up well with first shot (at 9:05) being full length. Loaded shot was a lower single null shot, and we then switched to upper null for the remainder of MP419. The SL required a well controlled density, and this was facilitated by adding some derivative gain to nl_04(gain = 2, 0.4-1.4 s). The gas feed forward was also useful in keeping the early runaways under control. There was one incident in which the Ref for buttons 5-8 was inadvertently toggled (second time in as many runs for this PO); fortunately no damage to the machine and little impact on subsequent shots. Steve has put in a fix that will bring up an acknowledgement if the button gets accidentally toggled again. On shot 12 the EF3 breaker pulled and this resulted in a no-plasma shot. The next two shots fizzled, but tweaking the RCUR offset to 1500 got the shot back on shot 16. On shot 18 we switched to MP450, studying the effect of poison gas injection to mitigate disruption effects. After the disruptive shots, one or two fizzles were required to get the machine back. But many good gas-induced disruptions were obtained in the last 12 shots of the run. Perhaps the most interesting was shot 30, when LH was injected to produce a seed population of suprathermal electrons. This shot will require some analysis to shed light on whether the gas injection simply dumped the fast electrons or produced a more substantial population due to the electric field associated with the current termination.

Scorecard: 15 full length plasmas

6 intentional disruptions

8 fizzles

1 breaker pull

1 operator error

Session Leader Comments

Dec 20 2007 09:24:08:340AM 1071220001 Bruce Lipschultz Shot 1: Unfortunately, LSN. Next shot repeat but go for a repeat of 1070627011 - we reloaded the wrong shot.

Dec 20 2007 09:45:33:300AM 1071220002 Bruce Lipschultz Shot 2 USN 800 kA, nl04 = 0.6e20 but dropping. Flatten out the density and decrease the inner gap.

Dec 20 2007 09:59:30:587AM 1071220003 Bruce Lipschultz Shot 3 USN 800 kA, nl04 = 0.7e20 and flat. Get better probe scans and repeat.

Dec 20 2007 10:10:41:733AM 1071220004 Bruce Lipschultz Shot 4 USN 800 kA, nl04 = 0.7e20 and flat. Upper divertor probes all reading ok now. Outer strike point low pressure. Inner strike point neTe ~ 8e21 eV/m3. Repeat again to get final scanning probe measurements.

Dec 20 2007 10:27:00:880AM 1071220005 Bruce Lipschultz Shot 5: USN 800 kA, nl04 = 0.7e20 and flat. All probes ok. Next shot with cryopump.

Dec 20 2007 10:40:25:957AM 1071220006 Bruce Lipschultz Shot 6: USN 800 kA, nl04 = 0.7e20 and flat. Cryopump on.

Dec 20 2007 10:55:51:300AM 1071220007 Bruce Lipschultz Shot 7: Power supply problem, no plasma

Dec 20 2007 11:16:43:933AM 1071220008 Bruce Lipschultz Shot 8: fizzle

Dec 20 2007 11:40:32:443AM 1071220009 Bruce Lipschultz Shot 9: nl04 = 0.8, USN, no cryopump. Outer div strike point pressure higher but still not at strike point. Pumping.

Dec 20 2007 11:43:28:290AM 1071220010 Bruce Lipschultz Shot 10: nl04 = 0.8, USN, no cryopump. Outer div strike point pressure higher but still not at strike point. Pumping.

Next shot move to nl04=1.0

dropping cryopump for now as time is short

Dec 20 2007 12:01:41:060PM 1071220011 Bruce Lipschultz Shot 11: nl04 = 1.0, USN, no cryopump. Outer div strike point pressure higher and inner strike point detached. Pressure in upper divertor rising steadily through discharge.

Next shot same

Dec 20 2007 12:01:56:907PM 1071220012 Bruce Lipschultz Shot 12: no plasma, breaker pulled

Dec 20 2007 12:22:14:397PM 1071220013 Bruce Lipschultz shot 13: USN nl04 of 1.0. Still pumping. We hoped to sweep the upper strike point inward in R by 1 cm but it does not seem to have moved.

Dec 20 2007 12:36:50:403PM 1071220014 Bruce Lipschultz shot 134: fizzle

Dec 20 2007 12:59:58:927PM 1071220015 Bruce Lipschultz shot 15: fizzle

Dec 20 2007 01:01:21:880PM 1071220016 Bruce Lipschultz shot 16: nl04 = 1.2 but 175 kA disruption. Try one last time before turning over run

Dec 20 2007 02:27:52:133PM 1071220017 Bruce Lipschultz shot 17: nl04 = 1.2 but 275 kA disruption.

Dec 20 2007 01:54:56:540PM 1071220018 Robert Granetz Shot 18 will be the first gas jet shot into plasma. There will be 2-3 MW of
ICRF. No LHCD yet.

Torus gate valves will close before the shot and reopen as soon as their
minimum pressure limits are reached. All diagnostic gate valves except TCI
will remain closed for the rest of the run.

Plenum has been topped off at 70 bar with 15% Ar / 85% He.

Dec 20 2007 02:09:58:017PM 1071220018 Robert Granetz
Shot 18 -- Gas jet fired at t=1.000 s. Current quench spike is at t=1.005 s. Current quench duration is about 1 ms. I_halo= 93 kA Prf= 2.0 MW Wth= 85 kJ. Plenum gas: 15% argon / 85% helium Pulse length (ms): 1.5 Plenum pre -pulse pressure (bar): 70 Plenum post-pulse pressure (bar): 61 Plenum change in pressure (bar): 9 I can't believe how well everything is working!

Dec 20 2007 02:25:58:303PM 1071220018 Robert Granetz Matt Reinke reports that the radiated power fraction is only 40%.

Dec 20 2007 02:20:39:147PM 1071220019 Robert Granetz Shot 19 -- Fizzle. Dennis makes the point that prior to first boronization, the gas jet has
caused fizzles in the past. The good reproducibility is only after the machine has
been boronized.

Dec 20 2007 02:45:43:983PM 1071220019 Robert Granetz
Shot 19 -- Fizzle. Gas jet fired at t=1.000 s. Plenum gas: 15% argon / 85% helium Pulse length (ms): 1.5 Plenum pre -pulse pressure (bar): 62 Plenum post-pulse pressure (bar): 54 Plenum change in pressure (bar): 8

Dec 20 2007 02:50:02:017PM 1071220020 Robert Granetz
Shot 20 -- Fizzle again. Pulse length (ms): 1.5 Plenum gas: 15% argon / 85% helium Pulse length (ms): 1.5 Plenum pre -pulse pressure (bar): 54 Plenum post-pulse pressure (bar): 45 Plenum change in pressure (bar): 9 The gas jet will be disabled for the next shot.

Dec 20 2007 02:58:29:287PM 1071220021 Robert Granetz
Shot 21 -- Fizzle. Gas jet was turned off on purpose. I'll keep it off until we get plasmas back.

Dec 20 2007 03:09:38:303PM 1071220022 Robert Granetz Prior to shot 22 I did a partial fill of the plenum to get it up to 59 bar. However,
the gas jet is still disabled until we get the plasma back.

The ""partial"" fills were done by first filling the tubing between SV1, 2, and 3 from
the 70 bar regulator. Then I close SV1, which isolates the small tubing volume from
the supply regulator/tank. Then I open SV2, which fills the plenum from the small
tubing volume, then I close SV2. There is only enough gas to increase the plenum
pressure by about 3 bar each time I do this procedure, so I did it a number of times
in order to get the pressure up to 59 bar.

Dec 20 2007 03:11:31:650PM 1071220022 Robert Granetz
Shot 22 -- Plasma. Good shot. Gas jet was turned off on purpose. Next shot: re-enable the gas jet, with the plenum pressure at 59 bar.

Dec 20 2007 03:46:35:193PM 1071220023 Robert Granetz
Shot 23 -- Plasma. Good shot. Gas jet fired at t=1.000 s. Current quench spike is at t=1.005 s. Current quench duration is about 1 ms. I_halo= kA Prf= 2.0 MW Wth= 67 kJ. Plenum gas: 15% argon / 85% helium Pulse length (ms): 1.5 Plenum pre -pulse pressure (bar): 59 Plenum post-pulse pressure (bar): 50.5 Plenum change in pressure (bar): 8.5 Matt reports that the radiated power fraction was about 42%.

Dec 20 2007 03:43:56:507PM 1071220024 Robert Granetz
Shot 24 -- Fizzle. Gas jet was turned off for this shot, on purpose. After the shot, I reduced the plenum pressure in two steps to 36 bar by dumping gas into the Hovac pump. Gas jet will be enabled for the next shot.

Dec 20 2007 04:00:18:620PM 1071220025 Robert Granetz
Shot 25 -- Plasma. Good shot. Gas jet fired at t=1.000 s. Current quench spike is at t=1.005 s. Current quench duration is about 1 ms. I_halo= 105 kA Prf= 1.2 MW Wth= 67 kJ. Plenum gas: 15% argon / 85% helium Pulse length (ms): 1.5 Plenum pre -pulse pressure (bar): 36 Plenum post-pulse pressure (bar): 29.5 Plenum change in pressure (bar): 6.5 Matt reports that the radiated power fraction is 46%. The gas jet will be disabled for the next shot.

Dec 20 2007 04:03:45:293PM 1071220026 Robert Granetz
Shot 26 -- Plasma. However, the gas jet was disabled. Next shot: re-enable the gas jet. The plenum pressure has been reduced to 24.5 bar for the next shot.

Dec 20 2007 04:22:26:333PM 1071220027 Robert Granetz
Shot 27 -- Plasma. Good shot. Gas jet fired at t=1.000 s. Current quench spike is at t=1.005 s. Current quench duration is about 1 ms. I_halo= 134 kA Prf= 2.3 MW Wth= 65 kJ. Plenum gas: 15% argon / 85% helium Pulse length (ms): 1.5 Plenum pre -pulse pressure (bar): 24.5 Plenum post-pulse pressure (bar): 19.8 Plenum change in pressure (bar): 4.7 Next shot: raise plenum pressure to 36 bar. Turn off ICRF. Turn on LH in order to see if it can seed some runaways. Decrease programmed nl_04 to 4.5e19 m-2.

Dec 20 2007 04:30:56:710PM 1071220028 Robert Granetz
Shot 28 -- Fizzle. Gas jet fired at t=1.000 s. Plenum gas: 15% argon / 85% helium Pulse length (ms): 1.5 Plenum pre -pulse pressure (bar): 34 Plenum post-pulse pressure (bar): 28 Plenum change in pressure (bar): 6 I refreshed the plenum back to 34.5 bar before the next shot.

Dec 20 2007 04:50:46:470PM 1071220029 Robert Granetz
Shot 29 -- Plasma. Good shot. LH faulted a lot. Difficult to tell if there are any effects of runaways. There does seem to be a big ""spike"" on the hard x-ray signal that lasts for about 8 ms, but Steve Wolfe cautions that the signal is heavily filtered (non-causal filter). Gas jet fired at t=1.000 s. Current quench spike is at t=1.005 s. Current quench duration is about 1 ms. I_halo= 124 kA P_LH= < 100 kW Wth= 53 kJ. Plenum gas: 15% argon / 85% helium Pulse length (ms): 1.5 Plenum pre -pulse pressure (bar): 34.5 Plenum post-pulse pressure (bar): 28.5 Plenum change in pressure (bar): 6.0 Next shot: repeat for better LH performance

Dec 20 2007 05:08:29:383PM 1071220030 Robert Granetz
Shot 30 -- Plasma. Good shot. Good LH. Lots of hard x-rays on the TV screen. The unfilter hard x-ray signal is: \spectroscopy::top.bolometer.camac:incaa_4:input_05 It shows that the hard x-rays disappear at the time of the thermal quench (i.e. current spike). We'll have to think about this, but I don't believe that there's any obvious multiplication of the seed fast electrons due to the disruption. Maybe a gas jet is not the best way to do this. Gas jet fired at t=1.000 s. Current quench spike is at t=1.005 s. Current quench duration is about 1 ms. I_halo= kA P_LH= 410 MW Wth= 54 kJ. Plenum gas: 15% argon / 85% helium Pulse length (ms): 1.5 Plenum pre -pulse pressure (bar): 35.0 Plenum post-pulse pressure (bar): 29.0 Plenum change in pressure (bar): 6.0 END OF RUN

Dec 20 2007 01:48:29:633PM 1071220301 Robert Granetz
Test shot into empty vacuum chamber Gas jet fired at t=0.800 s. Plenum gas: 15% argon / 85% helium Pulse length (ms): 2.0 Plenum pre -pulse pressure (bar): 70 Plenum post-pulse pressure (bar): 58 Plenum change in pressure (bar): 12 It worked first time!! Ready for plasma. Right now there's a cell access for the LH (move grill up to get ready for late in the run)

Physics Operator Comments

Dec 20 2007 09:18:50:790AM 1071220001 Ron Parker Good snowy morning.

Nice shot, but SL wanted an upper null shot. SL debating on what shot to load.

Dec 20 2007 09:28:34:263AM 1071220001 Ron Parker Now we've loaded an upper null shot,shot 1070627011, segment 3.

Dec 20 2007 09:45:07:753AM 1071220002 Ron Parker Shot 2 ran well. Some tuning required for next shot. Reduce inner gap by 5 mm, keep outer gap the same. Keep density up until end of shot at 6e19.

Dec 20 2007 09:52:55:570AM 1071220003 Ron Parker Shot 3 ran well, density a bit over target so we'll reduce feedforward gas.

Dec 20 2007 10:05:23:260AM 1071220004 Ron Parker Shot 4 ran well, full length. Density still 7 rather than requested 6e19 cm-2.

Dec 20 2007 10:43:56:130AM 1071220005 Ron Parker Shot 5 ran full length.

Dec 20 2007 10:44:48:190AM 1071220006 Ron Parker Shot 6 ran well. Next: no cryopump, nl_04 programmed for 7e19 (hoping to get 8)

Derivative gain on density set to 2.0 from 0.4 to 1.4 s in order to try to stabilize small density oscillations.

Dec 20 2007 11:19:40:420AM 1071220007 Ron Parker Shot 7 didn't go, Ref for 5-8 in segment 1 got toggled! Steve has put a fix on it.

Dec 20 2007 11:20:11:043AM 1071220008 Ron Parker Shot 8 fizzled, too much gas.

Dec 20 2007 11:35:00:630AM 1071220009 Ron Parker Shot 9 ran full length. (Relief!)

Dec 20 2007 11:43:41:727AM 1071220010 Ron Parker Shot 10 reproduced shot 9. Next: increase nl_04 to 1.0e20 m-2

Dec 20 2007 12:01:21:937PM 1071220011 Ron Parker Shot 11 ran well, full length. Nice flat density.

Dec 20 2007 12:02:36:560PM 1071220012 Ron Parker Shot 12 didn't go, EF 3 breaker came out.

Dec 20 2007 12:23:01:553PM 1071220013 Ron Parker Shot 13 ran well, full length. Next: nl_04=1.2e20 m-2.

Dec 20 2007 12:33:27:027PM 1071220014 Ron Parker Oops, a fizzle. Not clear why, We'll drop RCUR offset to 1000 and reduce prefill by 2 ms (from 20 to 18 ms).

Dec 20 2007 12:42:38:733PM 1071220015 Ron Parker Oops. oops, another fizzle. Set RCUR at 1500.

Dec 20 2007 12:58:59:690PM 1071220016 Ron Parker Shot 16 ran, reached nl_04=1.2e20 m-2 as programmed.

Dec 20 2007 01:12:05:807PM 1071220017 Ron Parker Shot 17 went off as programmed,disrupting on rampdown at ~ 300 kA.

Now we switch to MP 450, R. Granetz SL.

Cell access required.

Dec 20 2007 02:14:28:207PM 1071220018 Ron Parker Shot 18 started up well and disrupted as planned due to gas injection.

Next: same shot, lower plenum pressure.

Dec 20 2007 02:20:59:537PM 1071220019 Ron Parker Shot 19 fizzled, not surprising after disruption.

Dec 20 2007 03:12:19:820PM 1071220020 Ron Parker Another fizzle, after this we'll turn off poison gas until shot recovers.

Dec 20 2007 03:12:01:667PM 1071220021 Ron Parker Shot 21 fizzled.

Dec 20 2007 03:10:49:290PM 1071220022 Ron Parker Shot 22 went off as programmed (finally)

Dec 20 2007 03:34:04:800PM 1071220023 Ron Parker Shot 23 ran as programmed and disrupted, also as programmed thanks to poison gas pulse. Now we will likely see a few fizzles before getting another disruption via poisson gas injection.

Dec 20 2007 03:36:08:910PM 1071220024 Ron Parker Fizzle, as expected.

Dec 20 2007 03:59:45:153PM 1071220025 Ron Parker Shot 25 went off as programmed, and was disruptively terminated as well.

Next: recovery from disruption (i.e., fizzle)

Dec 20 2007 04:31:59:057PM 1071220026 Ron Parker Surprise, no fizzle! Full length shot.

Dec 20 2007 04:32:40:587PM 1071220027 Ron Parker Shot 27 ran and was disruptively terminated.

Dec 20 2007 04:29:58:197PM 1071220028 Ron Parker Shot 28 fizzled. Tant pis!

Dec 20 2007 04:45:50:280PM 1071220029 Ron Parker Shot29 ran, attempt to put LH on but coupling was poor.

Dec 20 2007 05:22:36:420PM 1071220030 Ron Parker Success! LH did its thing and produced runaways prior to disruptive gas pulse.

Need to analyze data from X-Ray camera.

Engineering Operator Comments

Shot Time Type Status Comment

1 09:06:34:723AM Plasma Ok

2 09:28:04:747AM Plasma Ok

3 09:43:25:173AM Plasma Ok

4 09:58:56:650AM Plasma Ok

5 10:14:01:610AM Plasma Ok

6 10:29:43:803AM Plasma Ok

7 10:44:45:363AM Plasma Bad OH1, OH2U&L, EF1U&L, Comm. Flt

8 11:07:02:603AM Plasma Ok

9 11:19:39:983AM Plasma Ok

10 11:32:21:737AM Plasma Ok

11 11:45:37:697AM Plasma Ok

12 11:58:28:450AM Plasma Ok EF3 Breaker pulled at pulse

13 12:12:11:127PM Plasma Ok

14 12:25:15:180PM Plasma Ok

15 12:38:52:293PM Plasma Ok

16 12:51:37:783PM Plasma Ok

17 01:04:07:490PM Plasma Ok

18 01:59:38:683PM Plasma Ok

19 02:15:44:847PM Plasma Ok

20 02:40:06:950PM Plasma Ok

21 02:56:05:173PM Plasma Ok

22 03:08:32:443PM Plasma Ok

23 03:20:58:480PM Plasma Ok

24 03:33:35:953PM Plasma Ok

25 03:46:18:210PM Plasma Ok

26 03:58:40:683PM Plasma Ok

27 04:12:45:843PM Plasma Ok

28 04:26:54:477PM Plasma Ok

29 04:39:12:543PM Plasma Ok

30 04:55:22:220PM Plasma Ok

System Availability

Dec 20 2007 09:06:09:020AM

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 being low-pass filtered to remove noise. Outboard miidplane AXUV fine. Midplane foils working fine, but need to fill tree with calibrations. 2D AXUV arrays are being digitized but need further debugging and calibration. Dec 19 2007 07:16PM (mlreinke) Matt Reinke Bolometers hutch,mlreinke
Boronization no First Boronization 5/9/07 Bottle has been removed from the cell Sep 14 2007 12:42PM (dekow) Jim Irby Boronization dekow,irby
CNPA yes Single channel CNPA available as of 12/1707 Dec 17 2007 05:48PM (parker) Ron Parker Compact Neutral Analyzer parker
Cryopump - Upper Divertor yes Cryopump is operational Dec 11 2007 10:13AM (labombard) Brian LaBombard Upper Divertor Cryopump irby,labombard
CXRS yes The pedestal toroidal array was installed, spatially and absolutely calibrated. There are 10 chords intersect the beam at the major_R_range=[74.2:86.3]cm. Spatial resolution: 1.2 cm. The F-top poloidal array was installed and spatially calibrated. There are 19 chords intersect the beam at the major_R_range=[67.8:91.0]cm. Spatial resolution: 1.22 cm. Nov 27 2007 10:21AM (bespam) Bill Rowan Charge Exchange Spectroscopy bespam,blip,rachmcd,rowan
D Alpha yes \ha2_bright and \SPECTROSCOPY::TOP.VUV.VIS_SIGNALS:MCP_VIS_SIG1 are available Nov 26 2007 04:23PM (terry) Jim Terry Balmer Alpha Monitor irby,terry,wolfe
Dalsa yes optics repaired, camera re-installed, and view has been re-calibrated Nov 27 2007 09:54AM (marmar) Earl Marmar Visible Bremsstrahlung marmar
Disruption Mitigation no Nov 20 2007 10:47PM (granetz) Robert Granetz Gas Jet granetz,whyte
Divertor IR no Mar 06 2007 10:50AM Glen Wurden Divertor IR Digital Video gwurden,terry
Divertor IR Spectroscopy no Mar 06 2007 10:51AM Glen Wurden Divertor IR Spectroscopy gwurden,terry
DNB no Nov 20 2007 10:47PM (granetz) Robert Granetz Diagnostic Neutral Beam beals,granetz
FRC-ECE yes 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 Available, but Chs 1, 9 still have preamp problems. Dec 18 2007 09:21AM (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 yes 50, 60, 75 and 88GHz channels are connected and being tested for the campaign Dec 18 2007 10:28AM (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 during pre-physics phase of campaign. Any data you see in the tree are uncalibrated! 8 polychromators are in place and being tested. Full operation expected after Jan 1. Dec 20 2007 08:26AM (jwhughes) Jerry Hughes Core Thomson scattering jwhughes,yma
TS - Edge no Expect operation after Jan 1. Dec 20 2007 08:27AM (jwhughes) Jerry Hughes Millimeter resolution edge Thomson scattering jwhughes,yma
Vispec no 350 and 670 nm, 4 spatial channels Nov 28 2007 09:58AM (agraf) Alex Graf Visible Spectrometer agraf
XTOMO yes Data being collected in digitizers and SIGNALS nodes updated. Still playing switch-a-roo with cPCI digitizers, but data should be available. Dec 19 2007 07:14PM (mlreinke) Bob Granetz X-Ray Tomography granetz,mlreinke

Dec 20 2007 11:19:25:683AM

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 being low-pass filtered to remove noise. Outboard miidplane AXUV fine. Midplane foils working fine, but need to fill tree with calibrations. 2D AXUV arrays are being digitized but need further debugging and calibration. Dec 19 2007 07:16PM (mlreinke) Matt Reinke Bolometers hutch,mlreinke
Boronization no First Boronization 5/9/07 Bottle has been removed from the cell Sep 14 2007 12:42PM (dekow) Jim Irby Boronization dekow,irby
CNPA yes Single channel CNPA available as of 12/1707 Dec 17 2007 05:48PM (parker) Ron Parker Compact Neutral Analyzer parker
Cryopump - Upper Divertor yes Cryopump is operational Dec 11 2007 10:13AM (labombard) Brian LaBombard Upper Divertor Cryopump irby,labombard
CXRS yes The pedestal toroidal array was installed, spatially and absolutely calibrated. There are 10 chords intersect the beam at the major_R_range=[74.2:86.3]cm. Spatial resolution: 1.2 cm. The F-top poloidal array was installed and spatially calibrated. There are 19 chords intersect the beam at the major_R_range=[67.8:91.0]cm. Spatial resolution: 1.22 cm. Nov 27 2007 10:21AM (bespam) Bill Rowan Charge Exchange Spectroscopy bespam,blip,rachmcd,rowan
D Alpha yes \ha2_bright and \SPECTROSCOPY::TOP.VUV.VIS_SIGNALS:MCP_VIS_SIG1 are available Nov 26 2007 04:23PM (terry) Jim Terry Balmer Alpha Monitor irby,terry,wolfe
Dalsa yes optics repaired, camera re-installed, and view has been re-calibrated Nov 27 2007 09:54AM (marmar) Earl Marmar Visible Bremsstrahlung marmar
Disruption Mitigation no Nov 20 2007 10:47PM (granetz) Robert Granetz Gas Jet granetz,whyte
Divertor IR no Mar 06 2007 10:50AM Glen Wurden Divertor IR Digital Video gwurden,terry
Divertor IR Spectroscopy no Mar 06 2007 10:51AM Glen Wurden Divertor IR Spectroscopy gwurden,terry
DNB no Nov 20 2007 10:47PM (granetz) Robert Granetz Diagnostic Neutral Beam beals,granetz
FRC-ECE yes 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 Available, but Chs 1, 9 still have preamp problems. Dec 18 2007 09:21AM (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 yes 50, 60, 75 and 88GHz channels are connected and being tested for the campaign Dec 18 2007 10:28AM (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 during pre-physics phase of campaign. Any data you see in the tree are uncalibrated! 8 polychromators are in place and being tested. Full operation expected after Jan 1. Dec 20 2007 08:26AM (jwhughes) Jerry Hughes Core Thomson scattering jwhughes,yma
TS - Edge no Expect operation after Jan 1. Dec 20 2007 08:27AM (jwhughes) Jerry Hughes Millimeter resolution edge Thomson scattering jwhughes,yma
Vispec no 350 and 670 nm, 4 spatial channels Nov 28 2007 09:58AM (agraf) Alex Graf Visible Spectrometer agraf
XTOMO yes Data being collected in digitizers and SIGNALS nodes updated. Still playing switch-a-roo with cPCI digitizers, but data should be available. Dec 19 2007 07:14PM (mlreinke) Bob Granetz X-Ray Tomography granetz,mlreinke

Dec 20 2007 02:54:35:440PM

TS optical fiber positions have been modified.

Dec 20 2007 03:08:17:180PM

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 being low-pass filtered to remove noise. Outboard miidplane AXUV fine. Midplane foils working fine, but need to fill tree with calibrations. 2D AXUV arrays are being digitized but need further debugging and calibration. Dec 19 2007 07:16PM (mlreinke) Matt Reinke Bolometers hutch,mlreinke
Boronization no First Boronization 5/9/07 Bottle has been removed from the cell Sep 14 2007 12:42PM (dekow) Jim Irby Boronization dekow,irby
CNPA yes Single channel CNPA available as of 12/1707 Dec 17 2007 05:48PM (parker) Ron Parker Compact Neutral Analyzer parker
Cryopump - Upper Divertor yes Cryopump is operational Dec 11 2007 10:13AM (labombard) Brian LaBombard Upper Divertor Cryopump irby,labombard
CXRS yes The pedestal toroidal array was installed, spatially and absolutely calibrated. There are 10 chords intersect the beam at the major_R_range=[74.2:86.3]cm. Spatial resolution: 1.2 cm. The F-top poloidal array was installed and spatially calibrated. There are 19 chords intersect the beam at the major_R_range=[67.8:91.0]cm. Spatial resolution: 1.22 cm. Nov 27 2007 10:21AM (bespam) Bill Rowan Charge Exchange Spectroscopy bespam,blip,rachmcd,rowan
D Alpha yes \ha2_bright and \SPECTROSCOPY::TOP.VUV.VIS_SIGNALS:MCP_VIS_SIG1 are available Nov 26 2007 04:23PM (terry) Jim Terry Balmer Alpha Monitor irby,terry,wolfe
Dalsa yes optics repaired, camera re-installed, and view has been re-calibrated Nov 27 2007 09:54AM (marmar) Earl Marmar Visible Bremsstrahlung marmar
Disruption Mitigation no Nov 20 2007 10:47PM (granetz) Robert Granetz Gas Jet granetz,whyte
Divertor IR no Mar 06 2007 10:50AM Glen Wurden Divertor IR Digital Video gwurden,terry
Divertor IR Spectroscopy no Mar 06 2007 10:51AM Glen Wurden Divertor IR Spectroscopy gwurden,terry
DNB no Nov 20 2007 10:47PM (granetz) Robert Granetz Diagnostic Neutral Beam beals,granetz
FRC-ECE yes 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 Available, but Chs 1, 9 still have preamp problems. Dec 18 2007 09:21AM (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 yes 50, 60, 75 and 88GHz channels are connected and being tested for the campaign Dec 18 2007 10:28AM (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 during pre-physics phase of campaign. Any data you see in the tree are uncalibrated! 8 polychromators are in place and being tested. Full operation expected after Jan 1. Dec 20 2007 08:26AM (jwhughes) Jerry Hughes Core Thomson scattering jwhughes,yma
TS - Edge no Expect operation after Jan 1. Dec 20 2007 08:27AM (jwhughes) Jerry Hughes Millimeter resolution edge Thomson scattering jwhughes,yma
Vispec no 350 and 670 nm, 4 spatial channels Nov 28 2007 09:58AM (agraf) Alex Graf Visible Spectrometer agraf
XTOMO yes Data being collected in digitizers and SIGNALS nodes updated. Still playing switch-a-roo with cPCI digitizers, but data should be available. Dec 19 2007 07:14PM (mlreinke) Bob Granetz X-Ray Tomography granetz,mlreinke

Session Leader Comments
Dec 20 2007 09:24:08:340AM	1071220001	Bruce Lipschultz	Shot 1: Unfortunately, LSN. Next shot repeat but go for a repeat of 1070627011 - we reloaded the wrong shot.
Dec 20 2007 09:45:33:300AM	1071220002	Bruce Lipschultz	Shot 2 USN 800 kA, nl04 = 0.6e20 but dropping. Flatten out the density and decrease the inner gap.
Dec 20 2007 09:59:30:587AM	1071220003	Bruce Lipschultz	Shot 3 USN 800 kA, nl04 = 0.7e20 and flat. Get better probe scans and repeat.
Dec 20 2007 10:10:41:733AM	1071220004	Bruce Lipschultz	Shot 4 USN 800 kA, nl04 = 0.7e20 and flat. Upper divertor probes all reading ok now. Outer strike point low pressure. Inner strike point neTe ~ 8e21 eV/m3. Repeat again to get final scanning probe measurements.
Dec 20 2007 10:27:00:880AM	1071220005	Bruce Lipschultz	Shot 5: USN 800 kA, nl04 = 0.7e20 and flat. All probes ok. Next shot with cryopump.
Dec 20 2007 10:40:25:957AM	1071220006	Bruce Lipschultz	Shot 6: USN 800 kA, nl04 = 0.7e20 and flat. Cryopump on.
Dec 20 2007 10:55:51:300AM	1071220007	Bruce Lipschultz	Shot 7: Power supply problem, no plasma
Dec 20 2007 11:16:43:933AM	1071220008	Bruce Lipschultz	Shot 8: fizzle
Dec 20 2007 11:40:32:443AM	1071220009	Bruce Lipschultz	Shot 9: nl04 = 0.8, USN, no cryopump. Outer div strike point pressure higher but still not at strike point. Pumping.
Dec 20 2007 11:43:28:290AM	1071220010	Bruce Lipschultz	Shot 10: nl04 = 0.8, USN, no cryopump. Outer div strike point pressure higher but still not at strike point. Pumping. Next shot move to nl04=1.0 dropping cryopump for now as time is short
Dec 20 2007 12:01:41:060PM	1071220011	Bruce Lipschultz	Shot 11: nl04 = 1.0, USN, no cryopump. Outer div strike point pressure higher and inner strike point detached. Pressure in upper divertor rising steadily through discharge. Next shot same
Dec 20 2007 12:01:56:907PM	1071220012	Bruce Lipschultz	Shot 12: no plasma, breaker pulled
Dec 20 2007 12:22:14:397PM	1071220013	Bruce Lipschultz	shot 13: USN nl04 of 1.0. Still pumping. We hoped to sweep the upper strike point inward in R by 1 cm but it does not seem to have moved.
Dec 20 2007 12:36:50:403PM	1071220014	Bruce Lipschultz	shot 134: fizzle
Dec 20 2007 12:59:58:927PM	1071220015	Bruce Lipschultz	shot 15: fizzle
Dec 20 2007 01:01:21:880PM	1071220016	Bruce Lipschultz	shot 16: nl04 = 1.2 but 175 kA disruption. Try one last time before turning over run
Dec 20 2007 02:27:52:133PM	1071220017	Bruce Lipschultz	shot 17: nl04 = 1.2 but 275 kA disruption.
Dec 20 2007 01:54:56:540PM	1071220018	Robert Granetz	Shot 18 will be the first gas jet shot into plasma. There will be 2-3 MW of ICRF. No LHCD yet. Torus gate valves will close before the shot and reopen as soon as their minimum pressure limits are reached. All diagnostic gate valves except TCI will remain closed for the rest of the run. Plenum has been topped off at 70 bar with 15% Ar / 85% He.
Dec 20 2007 02:09:58:017PM	1071220018	Robert Granetz	Shot 18 -- Gas jet fired at t=1.000 s. Current quench spike is at t=1.005 s. Current quench duration is about 1 ms. I_halo= 93 kA Prf= 2.0 MW Wth= 85 kJ. Plenum gas: 15% argon / 85% helium Pulse length (ms): 1.5 Plenum pre -pulse pressure (bar): 70 Plenum post-pulse pressure (bar): 61 Plenum change in pressure (bar): 9 I can't believe how well everything is working!
Dec 20 2007 02:25:58:303PM	1071220018	Robert Granetz	Matt Reinke reports that the radiated power fraction is only 40%.
Dec 20 2007 02:20:39:147PM	1071220019	Robert Granetz	Shot 19 -- Fizzle. Dennis makes the point that prior to first boronization, the gas jet has caused fizzles in the past. The good reproducibility is only after the machine has been boronized.
Dec 20 2007 02:45:43:983PM	1071220019	Robert Granetz	Shot 19 -- Fizzle. Gas jet fired at t=1.000 s. Plenum gas: 15% argon / 85% helium Pulse length (ms): 1.5 Plenum pre -pulse pressure (bar): 62 Plenum post-pulse pressure (bar): 54 Plenum change in pressure (bar): 8
Dec 20 2007 02:50:02:017PM	1071220020	Robert Granetz	Shot 20 -- Fizzle again. Pulse length (ms): 1.5 Plenum gas: 15% argon / 85% helium Pulse length (ms): 1.5 Plenum pre -pulse pressure (bar): 54 Plenum post-pulse pressure (bar): 45 Plenum change in pressure (bar): 9 The gas jet will be disabled for the next shot.
Dec 20 2007 02:58:29:287PM	1071220021	Robert Granetz	Shot 21 -- Fizzle. Gas jet was turned off on purpose. I'll keep it off until we get plasmas back.
Dec 20 2007 03:09:38:303PM	1071220022	Robert Granetz	Prior to shot 22 I did a partial fill of the plenum to get it up to 59 bar. However, the gas jet is still disabled until we get the plasma back. The ""partial"" fills were done by first filling the tubing between SV1, 2, and 3 from the 70 bar regulator. Then I close SV1, which isolates the small tubing volume from the supply regulator/tank. Then I open SV2, which fills the plenum from the small tubing volume, then I close SV2. There is only enough gas to increase the plenum pressure by about 3 bar each time I do this procedure, so I did it a number of times in order to get the pressure up to 59 bar.
Dec 20 2007 03:11:31:650PM	1071220022	Robert Granetz	Shot 22 -- Plasma. Good shot. Gas jet was turned off on purpose. Next shot: re-enable the gas jet, with the plenum pressure at 59 bar.
Dec 20 2007 03:46:35:193PM	1071220023	Robert Granetz	Shot 23 -- Plasma. Good shot. Gas jet fired at t=1.000 s. Current quench spike is at t=1.005 s. Current quench duration is about 1 ms. I_halo= kA Prf= 2.0 MW Wth= 67 kJ. Plenum gas: 15% argon / 85% helium Pulse length (ms): 1.5 Plenum pre -pulse pressure (bar): 59 Plenum post-pulse pressure (bar): 50.5 Plenum change in pressure (bar): 8.5 Matt reports that the radiated power fraction was about 42%.
Dec 20 2007 03:43:56:507PM	1071220024	Robert Granetz	Shot 24 -- Fizzle. Gas jet was turned off for this shot, on purpose. After the shot, I reduced the plenum pressure in two steps to 36 bar by dumping gas into the Hovac pump. Gas jet will be enabled for the next shot.
Dec 20 2007 04:00:18:620PM	1071220025	Robert Granetz	Shot 25 -- Plasma. Good shot. Gas jet fired at t=1.000 s. Current quench spike is at t=1.005 s. Current quench duration is about 1 ms. I_halo= 105 kA Prf= 1.2 MW Wth= 67 kJ. Plenum gas: 15% argon / 85% helium Pulse length (ms): 1.5 Plenum pre -pulse pressure (bar): 36 Plenum post-pulse pressure (bar): 29.5 Plenum change in pressure (bar): 6.5 Matt reports that the radiated power fraction is 46%. The gas jet will be disabled for the next shot.
Dec 20 2007 04:03:45:293PM	1071220026	Robert Granetz	Shot 26 -- Plasma. However, the gas jet was disabled. Next shot: re-enable the gas jet. The plenum pressure has been reduced to 24.5 bar for the next shot.
Dec 20 2007 04:22:26:333PM	1071220027	Robert Granetz	Shot 27 -- Plasma. Good shot. Gas jet fired at t=1.000 s. Current quench spike is at t=1.005 s. Current quench duration is about 1 ms. I_halo= 134 kA Prf= 2.3 MW Wth= 65 kJ. Plenum gas: 15% argon / 85% helium Pulse length (ms): 1.5 Plenum pre -pulse pressure (bar): 24.5 Plenum post-pulse pressure (bar): 19.8 Plenum change in pressure (bar): 4.7 Next shot: raise plenum pressure to 36 bar. Turn off ICRF. Turn on LH in order to see if it can seed some runaways. Decrease programmed nl_04 to 4.5e19 m-2.
Dec 20 2007 04:30:56:710PM	1071220028	Robert Granetz	Shot 28 -- Fizzle. Gas jet fired at t=1.000 s. Plenum gas: 15% argon / 85% helium Pulse length (ms): 1.5 Plenum pre -pulse pressure (bar): 34 Plenum post-pulse pressure (bar): 28 Plenum change in pressure (bar): 6 I refreshed the plenum back to 34.5 bar before the next shot.
Dec 20 2007 04:50:46:470PM	1071220029	Robert Granetz	Shot 29 -- Plasma. Good shot. LH faulted a lot. Difficult to tell if there are any effects of runaways. There does seem to be a big ""spike"" on the hard x-ray signal that lasts for about 8 ms, but Steve Wolfe cautions that the signal is heavily filtered (non-causal filter). Gas jet fired at t=1.000 s. Current quench spike is at t=1.005 s. Current quench duration is about 1 ms. I_halo= 124 kA P_LH= < 100 kW Wth= 53 kJ. Plenum gas: 15% argon / 85% helium Pulse length (ms): 1.5 Plenum pre -pulse pressure (bar): 34.5 Plenum post-pulse pressure (bar): 28.5 Plenum change in pressure (bar): 6.0 Next shot: repeat for better LH performance
Dec 20 2007 05:08:29:383PM	1071220030	Robert Granetz	Shot 30 -- Plasma. Good shot. Good LH. Lots of hard x-rays on the TV screen. The unfilter hard x-ray signal is: \spectroscopy::top.bolometer.camac:incaa_4:input_05 It shows that the hard x-rays disappear at the time of the thermal quench (i.e. current spike). We'll have to think about this, but I don't believe that there's any obvious multiplication of the seed fast electrons due to the disruption. Maybe a gas jet is not the best way to do this. Gas jet fired at t=1.000 s. Current quench spike is at t=1.005 s. Current quench duration is about 1 ms. I_halo= kA P_LH= 410 MW Wth= 54 kJ. Plenum gas: 15% argon / 85% helium Pulse length (ms): 1.5 Plenum pre -pulse pressure (bar): 35.0 Plenum post-pulse pressure (bar): 29.0 Plenum change in pressure (bar): 6.0 END OF RUN
Dec 20 2007 01:48:29:633PM	1071220301	Robert Granetz	Test shot into empty vacuum chamber Gas jet fired at t=0.800 s. Plenum gas: 15% argon / 85% helium Pulse length (ms): 2.0 Plenum pre -pulse pressure (bar): 70 Plenum post-pulse pressure (bar): 58 Plenum change in pressure (bar): 12 It worked first time!! Ready for plasma. Right now there's a cell access for the LH (move grill up to get ready for late in the run)

Physics Operator Comments
Dec 20 2007 09:18:50:790AM	1071220001	Ron Parker	Good snowy morning. Nice shot, but SL wanted an upper null shot. SL debating on what shot to load.
Dec 20 2007 09:28:34:263AM	1071220001	Ron Parker	Now we've loaded an upper null shot,shot 1070627011, segment 3.
Dec 20 2007 09:45:07:753AM	1071220002	Ron Parker	Shot 2 ran well. Some tuning required for next shot. Reduce inner gap by 5 mm, keep outer gap the same. Keep density up until end of shot at 6e19.
Dec 20 2007 09:52:55:570AM	1071220003	Ron Parker	Shot 3 ran well, density a bit over target so we'll reduce feedforward gas.
Dec 20 2007 10:05:23:260AM	1071220004	Ron Parker	Shot 4 ran well, full length. Density still 7 rather than requested 6e19 cm-2.
Dec 20 2007 10:43:56:130AM	1071220005	Ron Parker	Shot 5 ran full length.
Dec 20 2007 10:44:48:190AM	1071220006	Ron Parker	Shot 6 ran well. Next: no cryopump, nl_04 programmed for 7e19 (hoping to get 8) Derivative gain on density set to 2.0 from 0.4 to 1.4 s in order to try to stabilize small density oscillations.
Dec 20 2007 11:19:40:420AM	1071220007	Ron Parker	Shot 7 didn't go, Ref for 5-8 in segment 1 got toggled! Steve has put a fix on it.
Dec 20 2007 11:20:11:043AM	1071220008	Ron Parker	Shot 8 fizzled, too much gas.
Dec 20 2007 11:35:00:630AM	1071220009	Ron Parker	Shot 9 ran full length. (Relief!)
Dec 20 2007 11:43:41:727AM	1071220010	Ron Parker	Shot 10 reproduced shot 9. Next: increase nl_04 to 1.0e20 m-2
Dec 20 2007 12:01:21:937PM	1071220011	Ron Parker	Shot 11 ran well, full length. Nice flat density.
Dec 20 2007 12:02:36:560PM	1071220012	Ron Parker	Shot 12 didn't go, EF 3 breaker came out.
Dec 20 2007 12:23:01:553PM	1071220013	Ron Parker	Shot 13 ran well, full length. Next: nl_04=1.2e20 m-2.
Dec 20 2007 12:33:27:027PM	1071220014	Ron Parker	Oops, a fizzle. Not clear why, We'll drop RCUR offset to 1000 and reduce prefill by 2 ms (from 20 to 18 ms).
Dec 20 2007 12:42:38:733PM	1071220015	Ron Parker	Oops. oops, another fizzle. Set RCUR at 1500.
Dec 20 2007 12:58:59:690PM	1071220016	Ron Parker	Shot 16 ran, reached nl_04=1.2e20 m-2 as programmed.
Dec 20 2007 01:12:05:807PM	1071220017	Ron Parker	Shot 17 went off as programmed,disrupting on rampdown at ~ 300 kA. Now we switch to MP 450, R. Granetz SL. Cell access required.
Dec 20 2007 02:14:28:207PM	1071220018	Ron Parker	Shot 18 started up well and disrupted as planned due to gas injection. Next: same shot, lower plenum pressure.
Dec 20 2007 02:20:59:537PM	1071220019	Ron Parker	Shot 19 fizzled, not surprising after disruption.
Dec 20 2007 03:12:19:820PM	1071220020	Ron Parker	Another fizzle, after this we'll turn off poison gas until shot recovers.
Dec 20 2007 03:12:01:667PM	1071220021	Ron Parker	Shot 21 fizzled.
Dec 20 2007 03:10:49:290PM	1071220022	Ron Parker	Shot 22 went off as programmed (finally)
Dec 20 2007 03:34:04:800PM	1071220023	Ron Parker	Shot 23 ran as programmed and disrupted, also as programmed thanks to poison gas pulse. Now we will likely see a few fizzles before getting another disruption via poisson gas injection.
Dec 20 2007 03:36:08:910PM	1071220024	Ron Parker	Fizzle, as expected.
Dec 20 2007 03:59:45:153PM	1071220025	Ron Parker	Shot 25 went off as programmed, and was disruptively terminated as well. Next: recovery from disruption (i.e., fizzle)
Dec 20 2007 04:31:59:057PM	1071220026	Ron Parker	Surprise, no fizzle! Full length shot.
Dec 20 2007 04:32:40:587PM	1071220027	Ron Parker	Shot 27 ran and was disruptively terminated.
Dec 20 2007 04:29:58:197PM	1071220028	Ron Parker	Shot 28 fizzled. Tant pis!
Dec 20 2007 04:45:50:280PM	1071220029	Ron Parker	Shot29 ran, attempt to put LH on but coupling was poor.
Dec 20 2007 05:22:36:420PM	1071220030	Ron Parker	Success! LH did its thing and produced runaways prior to disruptive gas pulse. Need to analyze data from X-Ray camera.

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	09:06:34:723AM	Plasma	Ok
2	09:28:04:747AM	Plasma	Ok
3	09:43:25:173AM	Plasma	Ok
4	09:58:56:650AM	Plasma	Ok
5	10:14:01:610AM	Plasma	Ok
6	10:29:43:803AM	Plasma	Ok
7	10:44:45:363AM	Plasma	Bad	OH1, OH2U&L, EF1U&L, Comm. Flt
8	11:07:02:603AM	Plasma	Ok
9	11:19:39:983AM	Plasma	Ok
10	11:32:21:737AM	Plasma	Ok
11	11:45:37:697AM	Plasma	Ok
12	11:58:28:450AM	Plasma	Ok	EF3 Breaker pulled at pulse
13	12:12:11:127PM	Plasma	Ok
14	12:25:15:180PM	Plasma	Ok
15	12:38:52:293PM	Plasma	Ok
16	12:51:37:783PM	Plasma	Ok
17	01:04:07:490PM	Plasma	Ok
18	01:59:38:683PM	Plasma	Ok
19	02:15:44:847PM	Plasma	Ok
20	02:40:06:950PM	Plasma	Ok
21	02:56:05:173PM	Plasma	Ok
22	03:08:32:443PM	Plasma	Ok
23	03:20:58:480PM	Plasma	Ok
24	03:33:35:953PM	Plasma	Ok
25	03:46:18:210PM	Plasma	Ok
26	03:58:40:683PM	Plasma	Ok
27	04:12:45:843PM	Plasma	Ok
28	04:26:54:477PM	Plasma	Ok
29	04:39:12:543PM	Plasma	Ok
30	04:55:22:220PM	Plasma	Ok