Alcator C-Mod Run 1080312 Information

Miniproposals

Miniproposal: 523

Date Filed: 1/23/2008

Title: Effect of Lower Hybrid Current Drive on Rotation profile

First Author: Alex Ince-Cushman

Session Leader: Alex Ince-Cushman (shots 1-29)

Operators
Session leader(s):	Alex Ince-Cushman
Physics operator(s):	Joseph Snipes
Engineering operator(s):	Bill Parkin,Sam Pierson,Bill Parkin,Gary Dekow

Engineering Operator Run Comment
Session Leader: Alex Ince-Cushman PhysOp: Bill Rowan

Session Leader Plans

Entered: Mar 12 2008 08:28:04:003AM

Author: Alex Ince-Cushman

MP 523: Effect of Lower Hybrid Current Drive on Rotation Profile

Session Leader: Alex Ince-Cushman
PhysOp: Joe Snipes

The goal of this experiment is to add to the LHCD rotation database, particularly at 60 and 120 degree phasing. If time permits we will try for a trophy shot/fiducial pair.

Diagnostics: Hirex-sr, Thomson, Edge Thomson, Bolometer arrays, McPherson, PCI, Hard X-ray Camera

Step 1: locked mode discharge for Hirex-Sr calibration (2 shots)
- Repeat discharge 1080228024

Step 2: Bring LH up to full power (6 shots)
- Use shot 1080226006 as a starting point (60 degree phasing)
- Ramp up LH power to 1MW

Step 3: Density Scan (14 shots)
- Run the LH system at the highest power at which it performs without tripping (60 degrees).
- Progressively reduce the density to as low a value as possible (4 shots)
- Switch to 120 degree phasing and perform density scan from the lowest value obtained on the 60 degree density scan up to 1.0 nl04. (~6 shots)

Step 4: Trophy Shot development
- Adjust ne, Ip, Bt at maximum LH power to produce the largest possible change in rotation profile. Note we would be going to lower fields, not higher fields.
- Once trophy shot is produce, run an identical discharge without any LH for comparison.

Other: Depending on the status of the neutral beam we will likely have ~3 �??beam into gas�?� discharges to help calibrate the MSE diagnostic.

Physics Operators Plans

Entered: Mar 12 2008 07:17:29:440AM

Author: Joseph Snipes

Engineering setup for Wednesday 12 Mar 2008

MP 523: Effect of Lower Hybrid Current Drive on Rotation Profile

Session Leader: Alex Ince-Cushman
PhysOp: Joseph Snipes

Normal overnight ECDC in D2 and 60 C bake.

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

Power systems as on 1080214002

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 Hybrid ENABLED (PG1)
leave B-side upper as is Hybrid DISABLED (PG2)
fill B-main (C-side) with 40 psi D2 Hybrid enabled (PG3)
leave NINJA as is DISABLED

Enable the following gate valves and shutters, assuming no vacuum problems:
ECE, VUV, Z-bolo

Torvac setup: keep gate valves open

Diagnostics: Hirex-sr, Thomson, Edge Thomson, Bolometer arrays, McPherson, PCI, Hard X-ray Camera

-------------------------------------------------------------------------------
ICRF Setup: not needed
LH Setup: yes
DNB: yes for calibration
Cryopump: not needed

-------------------------------------------------------------------------------
The goal of this experiment is to add to the LHCD rotation database, particularly at 60 and 120 degree phasing. If time permits we will try for a trophy shot/fiducial pair.

Step 1: locked mode discharge for Hirex-Sr calibration (2 shots)
- Repeat discharge 1080214002
800kA, LSN, nl04=5e19 dropping negative after 0.7sec, Acoil=4kA,
b21_proj off.

Step 2: Bring LH up to full power (6 shots)
- Use shot 1080215014 as a starting point (60 degree phasing)
- Ramp up LH power to 1MW

Step 3: Density Scan (14 shots)
- Run the LH system at the highest power at which it performs without tripping (60 degrees).
- Progressively reduce the density to as low a value as possible (4 shots)
- Switch to 120 degree phasing and perform density scan from the lowest value obtained on the 60 degree density scan up to 1.0 nl04. (~6 shots)

Step 4: Trophy Shot development
- Adjust ne, Ip, Bt at maximum LH power to produce the largest possible change in rotation profile. Note we would be going to lower fields, not higher fields.
- Once trophy shot is produce, run an identical discharge without any LH for comparison.

Other: Depending on the status of the neutral beam we will likely have ~3 �??beam into gas�?� discharges to help calibrate the MSE diagnostic.

Session Leader Summaries

Entered: Mar 12 2008 05:48:22:337PM

Author: Alex Ince-Cushman

MP 523: Effect of Lower Hybrid Current Drive on Rotation Profile

The locked mode portion of the experiment was successful. The third shot of the day was a locked mode discharges with sufficient argon levels to provide a good wavelength calibration for Hirex-Sr.

The first half of the day was spent trying to get good LH coupling at 60 degree phasing. We had some trouble getting to the low density required for accessibility at 60 degrees and so after shot 17 we switched to 75 degree phasing. After 4 shots at 75 we changed the phase to 120 and then to 105, but had no success coupling any LH power. We then switched the phasing back to 60 and increased the toroidal field to help accessibility. These conditions provided the best shots of the day (27 & 28 in particular are very nice).

The LH effect on central rotation and some key plasma parameters are summarized in the table below.

Shot Bt nl04 LH Power LH Phase DeltaV
# [T] [1e19m2] [kW] [deg] [-km/s]
2 5.4 0.5 0 60 0
3 locked mode
4 5.4 0.6 900 60 -8
5 5.4 0.6 950 60 -5
6 5.4 0.6 1000 60 -8
7 5.4 0.55 1000 60 -10
8 fizzle
9 fizzle
10 5.4 0.45 900 60 -35
11 5.4 0.4 1000 60 -36
12 5.4 0.4 1000 60 -36
13 5.4 0.35 1000 60 -20
14 5.4 0.42 850 60 -40
15 fizzle
16 5.4 0.44 920 60 -30
17 5.4 0.44 900 60 -30
18 early disruption
19 5.4 0.45 980 75 -20
20 5.4 0.35 1000 75 -30
21 unintentional locked mode
22 5.4 0.40 980 75 -40
23 5.4 0.40 920 75 -40
24 5.4 0.30 0 120 0
25 5.4 0.30 0 105 0
25 5.4 0.30 0 105 0
26 6.2 0.30 0 60 0
27 6.2 0.40 860 60 -40
28 6.2 0.40 940 60 -40
29 6.2 0.40 940 60 -30

Entered: Mar 12 2008 05:48:28:540PM

Author: Alex Ince-Cushman

MP 523: Effect of Lower Hybrid Current Drive on Rotation Profile

The locked mode portion of the experiment was successful. The third shot of the day was a locked mode discharges with sufficient argon levels to provide a good wavelength calibration for Hirex-Sr.

The first half of the day was spent trying to get good LH coupling at 60 degree phasing. We had some trouble getting to the low density required for accessibility at 60 degrees and so after shot 17 we switched to 75 degree phasing. After 4 shots at 75 we changed the phase to 120 and then to 105, but had no success coupling any LH power. We then switched the phasing back to 60 and increased the toroidal field to help accessibility. These conditions provided the best shots of the day (27 & 28 in particular are very nice).

The LH effect on central rotation and some key plasma parameters are summarized in the table below.

Shot Bt nl04 LH Power LH Phase DeltaV
# [T] [1e19m2] [kW] [deg] [-km/s]
2 5.4 0.5 0 60 0
3 locked mode
4 5.4 0.6 900 60 -8
5 5.4 0.6 950 60 -5
6 5.4 0.6 1000 60 -8
7 5.4 0.55 1000 60 -10
8 fizzle
9 fizzle
10 5.4 0.45 900 60 -35
11 5.4 0.4 1000 60 -36
12 5.4 0.4 1000 60 -36
13 5.4 0.35 1000 60 -20
14 5.4 0.42 850 60 -40
15 fizzle
16 5.4 0.44 920 60 -30
17 5.4 0.44 900 60 -30
18 early disruption
19 5.4 0.45 980 75 -20
20 5.4 0.35 1000 75 -30
21 unintentional locked mode
22 5.4 0.40 980 75 -40
23 5.4 0.40 920 75 -40
24 5.4 0.30 0 120 0
25 5.4 0.30 0 105 0
25 5.4 0.30 0 105 0
26 6.2 0.30 0 60 0
27 6.2 0.40 860 60 -40
28 6.2 0.40 940 60 -40
29 6.2 0.40 940 60 -30

Physics Operator Summaries

Entered: Mar 12 2008 05:06:34:540PM

Author: Joseph Snipes

We had a slow start to the run due to some problems in the cell that meant we were not ready to close the doors until 9:00 am and then they turned on the cooling and it took almost an hour before the machine was ready. Once the machine was ready, it ran well except for a spurious alternator fault on shot 8 followed by a data system hang up on shot 9. Otherwise, there was only one fizzle and 26 plasmas out of 29 shots. The LH system also ran well and coupled over 1 MW on many shots. See the session leader summary for details of the physics results.

Shot,Duration(s),Ipmax(MA),Result Shot,Duration(s),Ipmax,Result
| 01 1.983 0.788 Plasma | 02 1.980 0.782 Plasma |
| 03 1.710 0.822 Plasma | 04 1.968 0.778 Plasma |
| 05 1.967 0.780 Plasma | 06 1.966 0.777 Plasma |
| 07 1.967 0.778 Plasma | 08 0.000 0.002 Dud |
| 09 0.000 0.002 Dud | 10 1.975 0.781 Plasma |
| 11 1.973 0.784 Plasma | 12 1.975 0.784 Plasma |
| 13 1.978 0.782 Plasma | 14 1.888 0.781 Plasma |
| 15 0.000 0.043 Fizzle | 16 1.902 0.778 Plasma |
| 17 1.897 0.777 Plasma | 18 0.280 0.669 Plasma |
| 19 1.898 0.778 Plasma | 20 1.633 0.786 Plasma |
| 21 1.610 0.773 Plasma | 22 1.863 0.783 Plasma |
| 23 1.955 0.781 Plasma | 24 1.602 0.766 Plasma |
| 25 1.690 0.775 Plasma | 26 1.757 0.774 Plasma |
| 27 1.559 0.790 Plasma | 28 1.967 0.788 Plasma |
| 29 1.948 0.786 Plasma
Date 1080312: 29 shots. 26 plasmas. 1 fizzles. 2 duds. 0 System Error.
(Plasma = Ip gt 60.0 kA Dud = H_alpha lt 0.40 V)
Total plasma duration: 46.89 s (exceeding -78 kA)

Session Leader Comments

Mar 12 2008 10:24:06:410AM 1080312001 Alex Ince-Cushman Successful full length shot. ~705kW of LH power coupled. We will repeat this shot with increased LH power. For the next shot we will also have the DNB firing.

Mar 12 2008 11:04:56:317AM 1080312002 Alex Ince-Cushman Another full length shot however there was a problem with the LH system and no power was coupled. The DNB fired successfully and did not seem to cause a change in density. As a result the DNB will be permitted to fire for the rest of the day.

For the next shot we will run a locked mode discharge to provide a spectral calibration for Hirex-Sr and to give the LH team time to trouble shoot.

Mar 12 2008 11:05:39:160AM 1080312003 Alex Ince-Cushman Full length shot. Locked mode came in at ~0.7s and persisted until ~1.5s. The argon signal level is good and so we will go back to LH shots.

Mar 12 2008 11:04:20:363AM 1080312004 Alex Ince-Cushman Full length shot. ~880kW of LH coupled at 60 degree phasing. There was an unidentified density increase at 0.87s which seems to reduce the effectiveness of the LHCD. There was a modest change in central toroidal rotation, ~ -10km/s.

Mar 12 2008 11:12:23:207AM 1080312004 Alex Ince-Cushman Full length shot. ~880kW of LH coupled at 60 degree phasing. There was an unidentified density increase at 0.87s which seems to reduce the effectiveness of the LHCD. There was a modest change in central toroidal rotation of order -5km/s.

Mar 12 2008 11:15:49:643AM 1080312005 Alex Ince-Cushman Full length shot. ~1000kW of LH coupled at 60 degree phasing with one trip. The unidentified density increase seen on the previous shot did not re-appear. The change in central toroidal rotation was still relatively small ~ -7km/s. For the next shot we will keep the LH power the same and attempt to lower the density.

Mar 12 2008 11:30:39:190AM 1080312006 Alex Ince-Cushman Full length shot. ~1000kW of LH coupled at 60 degree phasing with one trip. The density is still too high ( nl04 ~0.6) and so for the next shot we will reduce the target density. The outer gap will be increased to try an prevent the LH from tripping.

Mar 12 2008 11:51:56:807AM 1080312007 Alex Ince-Cushman Full length shot with LH up to 1.1MW with no trips. The density remains too high, which is reducing LHCD efficiency and accessibility. The DNB may be increasing the density and so for the next shot the DNB start time will be delayed to 0.86s. The LH induced a Delta V of ~ -12k/ms.

Mar 12 2008 12:43:06:990PM 1080312010 Alex Ince-Cushman Full length discharge with nl04 ~ 0.4. Some LH trips, but 1MW was achieved. There was an associated change in toroidal rotation of -40km/s. The toroidal rotation did not reach steady state and deltaV would have been larger if the LH pulse had persisted.

Mar 12 2008 12:45:25:413PM 1080312011 Alex Ince-Cushman Full length discharge with nl04 ~ 0.45. Multiple LH trips, but 1MW was achieved. There was an associated change in toroidal rotation of -35km/s.

Mar 12 2008 12:57:48:960PM 1080312012 Alex Ince-Cushman The LH had multiple trips but still managed to drive a change in rotation of -30km/s. For the next shot we will try to adjust the outer gap to prevent the LH trips.

Mar 12 2008 01:11:46:117PM 1080312013 Alex Ince-Cushman The LH is still having severe tripping problems. For the next shot we will try loading 1080215014 which had excellent LH coupling.

Mar 12 2008 01:25:21:070PM 1080312014 Alex Ince-Cushman Only one trip on the LH with ~900kW of power. The toroidal rotation achieved steady state with a deltaV of -40km/s. For the next shot we will increase the LH power.

Mar 12 2008 01:58:57:477PM 1080312016 Alex Ince-Cushman Clean LH @ ~900kW. The change in toroidal rotation was somewhat smaller (~-35km/s) than shot 14.

Mar 12 2008 03:14:12:023PM 1080312017 Alex Ince-Cushman LH up to 1MW with two trips. There was a -30km/s change in toroidal rotation, but LH waves were on the edge of accessibility. For the next shot we will change the phasing to 75 degrees and try to further reduce the density.

Mar 12 2008 02:16:19:570PM 1080312018 Alex Ince-Cushman Early Disruption.

Mar 12 2008 03:14:46:727PM 1080312019 Alex Ince-Cushman LH at 75 degree phasing at ~ 900kW. Very little power coupled after t ~0.95s. For the next shot we will bring the density back up a touch.

Mar 12 2008 03:15:07:163PM 1080312020 Alex Ince-Cushman LH at 75 degree phasing, ~ 1MW coupled with one extended trip at t = 0.8s. The LH appears to have suppressed the sawtooth oscillations after the trip. The toroidal rotation has a somewhat complicated time history but the deltaV was of order 25km/s.

Mar 12 2008 03:13:35:850PM 1080312021 Alex Ince-Cushman LH at 75 degree phasing (1MW) with no trips. It appears that there was an early locked mode which prevented the LH system from driving substantial amounts of current. We will rerun the shot, trying to prevent the locked mode by early puffing.

Mar 12 2008 03:26:50:007PM 1080312022 Alex Ince-Cushman LH at 75 degree phasing (1MW) with one large set of trips. The change in toroidal rotation was substantial (~-40km/s).

Mar 12 2008 03:39:07:147PM 1080312023 Alex Ince-Cushman LH at 75 degree phasing (1MW) with one early trip. The change in toroidal rotation was substantial (~-35km/s).

Mar 12 2008 03:52:35:900PM 1080312024 Alex Ince-Cushman LH at 120 degree phasing (1MW) but effectively not LH coupling. For the next shot reduce the phasing to 105.

Mar 12 2008 04:09:00:477PM 1080312025 Alex Ince-Cushman LH at 105 degree phasing with very poor LH coupling. For the next shot we will return to 60 degree phasing and increase the toroidal field to 6.2 T.

Mar 12 2008 04:47:18:163PM 1080312027 Alex Ince-Cushman Nice clean LH pulse at 60 degrees (830kW). Bt @ 6.2T. ~-40km/s change in toroidal rotation and substantial density peaking.

Mar 12 2008 04:57:36:320PM 1080312028 Alex Ince-Cushman Another beautiful LH pulse at 60 degrees (940kW). Bt @ 6.2T. ~-45km/s change in toroidal rotation and substantial density peaking.

Physics Operator Comments

Mar 12 2008 09:04:52:317AM 1080312001 Joseph Snipes Shot 1: Due to data system problems, the requested shot for starting with a locked mode is not available. So, we are starting with step 2 of the run plan. Loaded shot 1080226006 with no changes. It is a 0.75 MA, 5.4 T SNL plasma with nl04 set to 4.5 x 10^19 m^-2 with LHCD at 60 degree phasing. Brief delay for magnet cooling and a delayed search due to Granetz' DNB needs.

Mar 12 2008 10:02:46:207AM 1080312001 Joseph Snipes Shot 1: Good shot after almost a one hour delay for magnet cooling.

Mar 12 2008 10:14:22:503AM 1080312002 Joseph Snipes Shot 2: Enabled argon gas and DNB gate valve. Note that the DNB cryopumps are not working because of a lack of liquid helium, so there may be some gas injected into the plasma after the beam fires. The base pressure of the DNB is at 8 x 10^-6 Torr. Also enabled the NESOX diagnostic. Otherwise, it is a repeat. Good shot. DNB injected at 1.3 s. There was no increase in density from the DNB.

Mar 12 2008 10:31:35:207AM 1080312003 Joseph Snipes Shot 3: Loaded shot 1080215001 to get a locked mode with the A-coil on at 4 kA and B21_PROJ gain set to zero in segment 3. Set prepuff to 23 ms duration. LH turned off. Disrupted in rampdown at 1.7 s. Got a locked mode starting at 0.65 s.

Mar 12 2008 10:51:12:800AM 1080312004 Joseph Snipes Shot 4: Startup hesitates. Reloading shot 2. Try setting the prepuff to 27 ms duration. Good startup and a good shot, although there are some large low frequency MHD modes between 0.06 and 0.14 s.

Mar 12 2008 11:03:34:050AM 1080312005 Joseph Snipes Shot 5: Set nl04 to 4 x 10^19 m^-2 to attempt to reduce the density. Good shot but the density did not drop.

Mar 12 2008 11:17:21:817AM 1080312006 Joseph Snipes Shot 6: There was some preprogrammed gas in PG3 from 0.1 s to 0.5 s that I have now removed for this shot. Good shot. Density dropped a tiny bit.

Mar 12 2008 11:33:07:880AM 1080312007 Joseph Snipes Shot 7: Reduced nl04 to 3 x 10^19 m^-2 until 0.4 s with a ramp up to 4 x 10^19 m^-2 at 0.55 s. Reduced RCUR by 3 mm to 0.659 m throughout the flattop to increase the outer gap. Reduced prepuff to 23 ms duration. Good shot. Density is a bit lower, but I think to get lower density will require reducing the argon puff.

Mar 12 2008 11:50:18:367AM 1080312008 Joseph Snipes Shot 8: Reduced nl04 to 3 x 10^19 m^-2 throughout the flattop. Increased prepuff to 27 ms duration. DNB delayed until 0.86 s. Alternator problem. No power shot.

Mar 12 2008 12:02:49:070PM 1080312009 Joseph Snipes Shot 9: Try again. No power shot due to data system problem.

Mar 12 2008 12:29:50:007PM 1080312010 Joseph Snipes Shot 10: One more time . . . Good shot. Density is definitely lower.

Mar 12 2008 12:32:53:040PM 1080312011 Joseph Snipes Shot 11: Increased RCUR before 1 s with a slight ramp to try to flatten out the outer gap at 1 cm during the flattop. Good shot.

Mar 12 2008 12:46:56:697PM 1080312012 Joseph Snipes Shot 12: Set the derivative gain on nl04 to 0. Set the derivative gain on RCUR from 6 to 4 in an attempt to reduce the oscillations in the outer gap. Good shot.

Mar 12 2008 01:00:09:633PM 1080312013 Joseph Snipes Shot 13: RCUR oscillations were still there. Try increasing the derivative gain on RCUR to 8. Good shot.

Mar 12 2008 01:14:02:070PM 1080312014 Joseph Snipes Shot 14: Loaded shot 1080215014. Set nl04 to 3 x 10^19 m^-2. Good shot.

Mar 12 2008 01:25:44:367PM 1080312015 Joseph Snipes Shot 15: Increased EF4 current from -1340 to -1355 A. Reduced prepuff by 3 ms to 24 ms duration. Fizzle!

Mar 12 2008 01:45:20:087PM 1080312016 Joseph Snipes Shot 16: Returned EF4 current to -1340 A. Reduced prepuff another 2 ms to 22 ms duration. Good shot.

Mar 12 2008 01:58:46:633PM 1080312017 Joseph Snipes Shot 17: Increased prepuff to 25 ms duration. Reduced nl04 to 2.5 x 10^19 m^-2. Good shot.

Mar 12 2008 02:14:39:523PM 1080312018 Joseph Snipes Shot 18: Reduced nl04 after 0.25 s to 2 x 10^19 m^-2. Disrupted at 0.27 s.

Mar 12 2008 02:27:18:447PM 1080312019 Joseph Snipes Shot 19: Increase the prepuff by 2 ms to 27 ms duration to try to reduce the early runaways. Keep nl04 at 2.5 x 10^19 m^-2 until 0.35 s, then ramp quickly to 2 x 10^19 m^-2 by 0.4 s. Good shot.

Mar 12 2008 02:44:47:337PM 1080312020 Joseph Snipes Shot 20: Increased nl04 to 2.5 x 10^19 m^-2 throughout the flattop. Disrupted at 1.6 s. Hard x rays go through the roof right after the LH switches off at 1.2 s.

Mar 12 2008 03:11:45:273PM 1080312021 Joseph Snipes Shot 21: Repeat. Disrupted at 1.6 s. Locked mode from at least 0.26 s.

Mar 12 2008 03:13:34:430PM 1080312022 Joseph Snipes Shot 22: Increased nl04 to 3 x 10^19 m^-2 up to 0.3 s then ramp back down to 2.5 x 10^19 m^-2. Good shot.

Mar 12 2008 03:30:47:087PM 1080312023 Joseph Snipes Shot 23: Increased prepuff by 2 ms to 29 ms duration to try to eliminate the runaways early in the startup. Good shot.

Mar 12 2008 03:50:00:197PM 1080312024 Joseph Snipes Shot 24: Repeat with 120 degree phasing on the LH. Disrupted at 1.59 s. LH tripped for most of the pulse but still generated a huge fast electron tail.

Mar 12 2008 04:01:17:210PM 1080312025 Joseph Snipes Shot 25: Repeat. Disrupted at 1.66 s. Hard x rays again go through the roof. LH trips several times.

Mar 12 2008 04:26:10:853PM 1080312026 Joseph Snipes Shot 26: Increased TF current to 172 kA to go to 6.2 T. Started TF rampdown at 1.4 s. Li pellet enabled and set to fire at 1.5 s. Good shot. Disrupted in rampdown at 1.71 s. LH tripped.

Mar 12 2008 04:31:29:807PM 1080312027 Joseph Snipes Shot 27: Repeat. Disrupted at 1.5 s. Large hard x ray emission throughout and after the LH pulse up to the disruption.

Mar 12 2008 04:57:13:320PM 1080312028 Joseph Snipes Shot 28: Repeat. Good shot.

Mar 12 2008 05:03:08:180PM 1080312029 Joseph Snipes Shot 29: Repeat. Good shot.

Engineering Operator Comments

Shot Time Type Status Comment

1 09:50:10:973AM Plasma Ok

2 10:10:19:363AM Plasma Ok

3 10:26:30:097AM Plasma Ok

4 10:44:52:630AM Plasma Ok

5 11:00:10:583AM Plasma Ok

6 11:14:41:363AM Plasma Ok

7 11:29:55:990AM Plasma Ok

8 11:47:33:693AM Plasma Bad Alt. Inhibit, fault on bearing #2

9 11:58:49:583AM Plasma Bad looks like one of the camac servers died.

10 12:14:34:150PM Plasma Ok

11 12:30:29:337PM Plasma Ok

12 12:45:01:867PM Plasma Ok

13 12:57:37:303PM Plasma Ok

14 01:10:52:947PM Plasma Ok

15 01:23:56:413PM Plasma Ok

16 01:39:58:133PM Plasma Ok

17 01:56:53:540PM Plasma Ok

18 02:12:21:240PM Plasma Ok

19 02:25:29:617PM Plasma Ok

20 02:39:08:930PM Plasma Ok

21 02:53:16:243PM Plasma Ok

22 03:11:48:540PM Plasma Ok

23 03:26:56:900PM Plasma Ok

24 03:39:31:413PM Plasma Ok

25 03:53:08:337PM Plasma Ok

26 04:14:58:227PM Plasma Ok

27 04:27:28:663PM Plasma Ok

28 04:44:46:320PM Plasma Ok

29 04:59:57:867PM Plasma Ok

System Availability

Mar 12 2008 09:50:01:503AM

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,rowan
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 16 Channels now working - low freq. side - outer Rmids Feb 19 2008 09:56AM (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 All 9 channels operational as of new year. Jan 03 2008 09:31AM (hubbard) Amanda Hubbard ECE Polychromater hubbard,schmidt
GPC2 yes Most channels operational. Jan 02 2008 12:22PM (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 yes 1/9/08 Jan 09 2008 03:23PM (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 no Problems with detector. No quantitative line brightnesses possible. Qualitative tasks like impurity identification possible. Feb 15 2008 02:07PM (mlreinke) Jim Terry VUV Spectrometer mlreinke,terry
Michelson yes Working, moderate speed for now. Jan 02 2008 01:19PM (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. Feb 21 2008 08:51AM (jinseok) 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 yes working Feb 29 2008 07:00PM (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 Starting on 1080227 All low freq. channels have been connected 50,60,75,88, 88l,88u and 110GHz. The variable freq. channel as well as the 140 have been connected and are being tested. (On 1080306, 75GHz has been disconnected because the rcvr mixer has been obsolete for the last run days) Mar 06 2008 09:11AM (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 yes 12 polychromators (#1~8,9,11,13,15), 1 laser. Density is calibrated for YAG2 on polychromator 1~8. YAG1 is not calibrated yet. Density calibration hasn't been performed on ploychromator 9~16. Feb 21 2008 11:19AM (yma) Jerry Hughes Core Thomson scattering jwhughes,yma
TS - Edge yes System is working. Density is derived with last year's calibration, and should be good to within ~20%. Jan 18 2008 07:27AM (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 system operational Jan 10 2008 11:41AM (mlreinke) Bob Granetz X-Ray Tomography granetz,mlreinke

Session Leader Comments
Mar 12 2008 10:24:06:410AM	1080312001	Alex Ince-Cushman	Successful full length shot. ~705kW of LH power coupled. We will repeat this shot with increased LH power. For the next shot we will also have the DNB firing.
Mar 12 2008 11:04:56:317AM	1080312002	Alex Ince-Cushman	Another full length shot however there was a problem with the LH system and no power was coupled. The DNB fired successfully and did not seem to cause a change in density. As a result the DNB will be permitted to fire for the rest of the day. For the next shot we will run a locked mode discharge to provide a spectral calibration for Hirex-Sr and to give the LH team time to trouble shoot.
Mar 12 2008 11:05:39:160AM	1080312003	Alex Ince-Cushman	Full length shot. Locked mode came in at ~0.7s and persisted until ~1.5s. The argon signal level is good and so we will go back to LH shots.
Mar 12 2008 11:04:20:363AM	1080312004	Alex Ince-Cushman	Full length shot. ~880kW of LH coupled at 60 degree phasing. There was an unidentified density increase at 0.87s which seems to reduce the effectiveness of the LHCD. There was a modest change in central toroidal rotation, ~ -10km/s.
Mar 12 2008 11:12:23:207AM	1080312004	Alex Ince-Cushman	Full length shot. ~880kW of LH coupled at 60 degree phasing. There was an unidentified density increase at 0.87s which seems to reduce the effectiveness of the LHCD. There was a modest change in central toroidal rotation of order -5km/s.
Mar 12 2008 11:15:49:643AM	1080312005	Alex Ince-Cushman	Full length shot. ~1000kW of LH coupled at 60 degree phasing with one trip. The unidentified density increase seen on the previous shot did not re-appear. The change in central toroidal rotation was still relatively small ~ -7km/s. For the next shot we will keep the LH power the same and attempt to lower the density.
Mar 12 2008 11:30:39:190AM	1080312006	Alex Ince-Cushman	Full length shot. ~1000kW of LH coupled at 60 degree phasing with one trip. The density is still too high ( nl04 ~0.6) and so for the next shot we will reduce the target density. The outer gap will be increased to try an prevent the LH from tripping.
Mar 12 2008 11:51:56:807AM	1080312007	Alex Ince-Cushman	Full length shot with LH up to 1.1MW with no trips. The density remains too high, which is reducing LHCD efficiency and accessibility. The DNB may be increasing the density and so for the next shot the DNB start time will be delayed to 0.86s. The LH induced a Delta V of ~ -12k/ms.
Mar 12 2008 12:43:06:990PM	1080312010	Alex Ince-Cushman	Full length discharge with nl04 ~ 0.4. Some LH trips, but 1MW was achieved. There was an associated change in toroidal rotation of -40km/s. The toroidal rotation did not reach steady state and deltaV would have been larger if the LH pulse had persisted.
Mar 12 2008 12:45:25:413PM	1080312011	Alex Ince-Cushman	Full length discharge with nl04 ~ 0.45. Multiple LH trips, but 1MW was achieved. There was an associated change in toroidal rotation of -35km/s.
Mar 12 2008 12:57:48:960PM	1080312012	Alex Ince-Cushman	The LH had multiple trips but still managed to drive a change in rotation of -30km/s. For the next shot we will try to adjust the outer gap to prevent the LH trips.
Mar 12 2008 01:11:46:117PM	1080312013	Alex Ince-Cushman	The LH is still having severe tripping problems. For the next shot we will try loading 1080215014 which had excellent LH coupling.
Mar 12 2008 01:25:21:070PM	1080312014	Alex Ince-Cushman	Only one trip on the LH with ~900kW of power. The toroidal rotation achieved steady state with a deltaV of -40km/s. For the next shot we will increase the LH power.
Mar 12 2008 01:58:57:477PM	1080312016	Alex Ince-Cushman	Clean LH @ ~900kW. The change in toroidal rotation was somewhat smaller (~-35km/s) than shot 14.
Mar 12 2008 03:14:12:023PM	1080312017	Alex Ince-Cushman	LH up to 1MW with two trips. There was a -30km/s change in toroidal rotation, but LH waves were on the edge of accessibility. For the next shot we will change the phasing to 75 degrees and try to further reduce the density.
Mar 12 2008 02:16:19:570PM	1080312018	Alex Ince-Cushman	Early Disruption.
Mar 12 2008 03:14:46:727PM	1080312019	Alex Ince-Cushman	LH at 75 degree phasing at ~ 900kW. Very little power coupled after t ~0.95s. For the next shot we will bring the density back up a touch.
Mar 12 2008 03:15:07:163PM	1080312020	Alex Ince-Cushman	LH at 75 degree phasing, ~ 1MW coupled with one extended trip at t = 0.8s. The LH appears to have suppressed the sawtooth oscillations after the trip. The toroidal rotation has a somewhat complicated time history but the deltaV was of order 25km/s.
Mar 12 2008 03:13:35:850PM	1080312021	Alex Ince-Cushman	LH at 75 degree phasing (1MW) with no trips. It appears that there was an early locked mode which prevented the LH system from driving substantial amounts of current. We will rerun the shot, trying to prevent the locked mode by early puffing.
Mar 12 2008 03:26:50:007PM	1080312022	Alex Ince-Cushman	LH at 75 degree phasing (1MW) with one large set of trips. The change in toroidal rotation was substantial (~-40km/s).
Mar 12 2008 03:39:07:147PM	1080312023	Alex Ince-Cushman	LH at 75 degree phasing (1MW) with one early trip. The change in toroidal rotation was substantial (~-35km/s).
Mar 12 2008 03:52:35:900PM	1080312024	Alex Ince-Cushman	LH at 120 degree phasing (1MW) but effectively not LH coupling. For the next shot reduce the phasing to 105.
Mar 12 2008 04:09:00:477PM	1080312025	Alex Ince-Cushman	LH at 105 degree phasing with very poor LH coupling. For the next shot we will return to 60 degree phasing and increase the toroidal field to 6.2 T.
Mar 12 2008 04:47:18:163PM	1080312027	Alex Ince-Cushman	Nice clean LH pulse at 60 degrees (830kW). Bt @ 6.2T. ~-40km/s change in toroidal rotation and substantial density peaking.
Mar 12 2008 04:57:36:320PM	1080312028	Alex Ince-Cushman	Another beautiful LH pulse at 60 degrees (940kW). Bt @ 6.2T. ~-45km/s change in toroidal rotation and substantial density peaking.

Physics Operator Comments
Mar 12 2008 09:04:52:317AM	1080312001	Joseph Snipes	Shot 1: Due to data system problems, the requested shot for starting with a locked mode is not available. So, we are starting with step 2 of the run plan. Loaded shot 1080226006 with no changes. It is a 0.75 MA, 5.4 T SNL plasma with nl04 set to 4.5 x 10^19 m^-2 with LHCD at 60 degree phasing. Brief delay for magnet cooling and a delayed search due to Granetz' DNB needs.
Mar 12 2008 10:02:46:207AM	1080312001	Joseph Snipes	Shot 1: Good shot after almost a one hour delay for magnet cooling.
Mar 12 2008 10:14:22:503AM	1080312002	Joseph Snipes	Shot 2: Enabled argon gas and DNB gate valve. Note that the DNB cryopumps are not working because of a lack of liquid helium, so there may be some gas injected into the plasma after the beam fires. The base pressure of the DNB is at 8 x 10^-6 Torr. Also enabled the NESOX diagnostic. Otherwise, it is a repeat. Good shot. DNB injected at 1.3 s. There was no increase in density from the DNB.
Mar 12 2008 10:31:35:207AM	1080312003	Joseph Snipes	Shot 3: Loaded shot 1080215001 to get a locked mode with the A-coil on at 4 kA and B21_PROJ gain set to zero in segment 3. Set prepuff to 23 ms duration. LH turned off. Disrupted in rampdown at 1.7 s. Got a locked mode starting at 0.65 s.
Mar 12 2008 10:51:12:800AM	1080312004	Joseph Snipes	Shot 4: Startup hesitates. Reloading shot 2. Try setting the prepuff to 27 ms duration. Good startup and a good shot, although there are some large low frequency MHD modes between 0.06 and 0.14 s.
Mar 12 2008 11:03:34:050AM	1080312005	Joseph Snipes	Shot 5: Set nl04 to 4 x 10^19 m^-2 to attempt to reduce the density. Good shot but the density did not drop.
Mar 12 2008 11:17:21:817AM	1080312006	Joseph Snipes	Shot 6: There was some preprogrammed gas in PG3 from 0.1 s to 0.5 s that I have now removed for this shot. Good shot. Density dropped a tiny bit.
Mar 12 2008 11:33:07:880AM	1080312007	Joseph Snipes	Shot 7: Reduced nl04 to 3 x 10^19 m^-2 until 0.4 s with a ramp up to 4 x 10^19 m^-2 at 0.55 s. Reduced RCUR by 3 mm to 0.659 m throughout the flattop to increase the outer gap. Reduced prepuff to 23 ms duration. Good shot. Density is a bit lower, but I think to get lower density will require reducing the argon puff.
Mar 12 2008 11:50:18:367AM	1080312008	Joseph Snipes	Shot 8: Reduced nl04 to 3 x 10^19 m^-2 throughout the flattop. Increased prepuff to 27 ms duration. DNB delayed until 0.86 s. Alternator problem. No power shot.
Mar 12 2008 12:02:49:070PM	1080312009	Joseph Snipes	Shot 9: Try again. No power shot due to data system problem.
Mar 12 2008 12:29:50:007PM	1080312010	Joseph Snipes	Shot 10: One more time . . . Good shot. Density is definitely lower.
Mar 12 2008 12:32:53:040PM	1080312011	Joseph Snipes	Shot 11: Increased RCUR before 1 s with a slight ramp to try to flatten out the outer gap at 1 cm during the flattop. Good shot.
Mar 12 2008 12:46:56:697PM	1080312012	Joseph Snipes	Shot 12: Set the derivative gain on nl04 to 0. Set the derivative gain on RCUR from 6 to 4 in an attempt to reduce the oscillations in the outer gap. Good shot.
Mar 12 2008 01:00:09:633PM	1080312013	Joseph Snipes	Shot 13: RCUR oscillations were still there. Try increasing the derivative gain on RCUR to 8. Good shot.
Mar 12 2008 01:14:02:070PM	1080312014	Joseph Snipes	Shot 14: Loaded shot 1080215014. Set nl04 to 3 x 10^19 m^-2. Good shot.
Mar 12 2008 01:25:44:367PM	1080312015	Joseph Snipes	Shot 15: Increased EF4 current from -1340 to -1355 A. Reduced prepuff by 3 ms to 24 ms duration. Fizzle!
Mar 12 2008 01:45:20:087PM	1080312016	Joseph Snipes	Shot 16: Returned EF4 current to -1340 A. Reduced prepuff another 2 ms to 22 ms duration. Good shot.
Mar 12 2008 01:58:46:633PM	1080312017	Joseph Snipes	Shot 17: Increased prepuff to 25 ms duration. Reduced nl04 to 2.5 x 10^19 m^-2. Good shot.
Mar 12 2008 02:14:39:523PM	1080312018	Joseph Snipes	Shot 18: Reduced nl04 after 0.25 s to 2 x 10^19 m^-2. Disrupted at 0.27 s.
Mar 12 2008 02:27:18:447PM	1080312019	Joseph Snipes	Shot 19: Increase the prepuff by 2 ms to 27 ms duration to try to reduce the early runaways. Keep nl04 at 2.5 x 10^19 m^-2 until 0.35 s, then ramp quickly to 2 x 10^19 m^-2 by 0.4 s. Good shot.
Mar 12 2008 02:44:47:337PM	1080312020	Joseph Snipes	Shot 20: Increased nl04 to 2.5 x 10^19 m^-2 throughout the flattop. Disrupted at 1.6 s. Hard x rays go through the roof right after the LH switches off at 1.2 s.
Mar 12 2008 03:11:45:273PM	1080312021	Joseph Snipes	Shot 21: Repeat. Disrupted at 1.6 s. Locked mode from at least 0.26 s.
Mar 12 2008 03:13:34:430PM	1080312022	Joseph Snipes	Shot 22: Increased nl04 to 3 x 10^19 m^-2 up to 0.3 s then ramp back down to 2.5 x 10^19 m^-2. Good shot.
Mar 12 2008 03:30:47:087PM	1080312023	Joseph Snipes	Shot 23: Increased prepuff by 2 ms to 29 ms duration to try to eliminate the runaways early in the startup. Good shot.
Mar 12 2008 03:50:00:197PM	1080312024	Joseph Snipes	Shot 24: Repeat with 120 degree phasing on the LH. Disrupted at 1.59 s. LH tripped for most of the pulse but still generated a huge fast electron tail.
Mar 12 2008 04:01:17:210PM	1080312025	Joseph Snipes	Shot 25: Repeat. Disrupted at 1.66 s. Hard x rays again go through the roof. LH trips several times.
Mar 12 2008 04:26:10:853PM	1080312026	Joseph Snipes	Shot 26: Increased TF current to 172 kA to go to 6.2 T. Started TF rampdown at 1.4 s. Li pellet enabled and set to fire at 1.5 s. Good shot. Disrupted in rampdown at 1.71 s. LH tripped.
Mar 12 2008 04:31:29:807PM	1080312027	Joseph Snipes	Shot 27: Repeat. Disrupted at 1.5 s. Large hard x ray emission throughout and after the LH pulse up to the disruption.
Mar 12 2008 04:57:13:320PM	1080312028	Joseph Snipes	Shot 28: Repeat. Good shot.
Mar 12 2008 05:03:08:180PM	1080312029	Joseph Snipes	Shot 29: Repeat. Good shot.

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	09:50:10:973AM	Plasma	Ok
2	10:10:19:363AM	Plasma	Ok
3	10:26:30:097AM	Plasma	Ok
4	10:44:52:630AM	Plasma	Ok
5	11:00:10:583AM	Plasma	Ok
6	11:14:41:363AM	Plasma	Ok
7	11:29:55:990AM	Plasma	Ok
8	11:47:33:693AM	Plasma	Bad	Alt. Inhibit, fault on bearing #2
9	11:58:49:583AM	Plasma	Bad	looks like one of the camac servers died.
10	12:14:34:150PM	Plasma	Ok
11	12:30:29:337PM	Plasma	Ok
12	12:45:01:867PM	Plasma	Ok
13	12:57:37:303PM	Plasma	Ok
14	01:10:52:947PM	Plasma	Ok
15	01:23:56:413PM	Plasma	Ok
16	01:39:58:133PM	Plasma	Ok
17	01:56:53:540PM	Plasma	Ok
18	02:12:21:240PM	Plasma	Ok
19	02:25:29:617PM	Plasma	Ok
20	02:39:08:930PM	Plasma	Ok
21	02:53:16:243PM	Plasma	Ok
22	03:11:48:540PM	Plasma	Ok
23	03:26:56:900PM	Plasma	Ok
24	03:39:31:413PM	Plasma	Ok
25	03:53:08:337PM	Plasma	Ok
26	04:14:58:227PM	Plasma	Ok
27	04:27:28:663PM	Plasma	Ok
28	04:44:46:320PM	Plasma	Ok
29	04:59:57:867PM	Plasma	Ok