Alcator C-Mod Run 1050610 Information

Miniproposals

Miniproposal: 417

Date Filed: 2/24/2005

Title: Plasma performance, boronization and ICRF heating effectiveness with high-Z antenna guards and all-m

First Author: Yijun Lin

Session Leader: Yijun Lin (shots 1-48)

Operators
Session leader(s):	Yijun Lin
Physics operator(s):	Joseph Snipes,Robert Granetz
Engineering operator(s):	Bill Byford,Bill Parkin

Engineering Operator Run Comment
MP 417 Post-Boronization evaluation

Session Leader Plans

Entered: Jun 10 2005 08:08:05:177AM

Author: Yijun Lin

SL_PLAN: 1050610 (same as 1050503)
MP 417. Post-boronization evaluation

Setup: Li pellet and boron injectors may be needed.
Run load shot 1050426022 (possibly at a slightly different density)
Posssibly an extended run to 9 pm.

Background:
Boronization done preferentially to the outer limiter and
antennas. ECDC in D2 prior to the first plasma (scan from 50 cm to
103 cm with dwell at 78.5 cm) We already know that this boronization
would be effective based on some post Titanium runs. We still need
to know whether it is as effective as the previous two
boronizations, 1050419 (outer divertor only) and 1050425 (outer
divertor together with outer limiter and antennas)

Goal
1. Evaluate boronization by running constant discharges.
2. Evaluate the trend of impurities levels in the plasma

Plan:
1. Load shot 1050426022.
Slightly modified RF waveform. 3 MW from 0.7 to 1.1 sec, 4 MW (if
possible, otherwise, 3.6 MW) from 1.1 sec to 1.5 sec

Do a density scan in the first 3 shots, target density at
nl = 1.1, 0.9, 1.3e20 m^-2. For the subsequent shots, choose
the density that give the best long EDA H-mode

Assess the boronization effectiveness using the first 15 plasmas.

2. Decision point (after 15 full-length plasmas).

A. If the performance is excellent (Wtot >= 170 kJ at 3 MW RF), we
will continue running the same 1 MA plasmas until we see
definite degradation of performance. (criterion: Wtot <~ 150 kJ
at 1 MA and 3 MW Prf.) the run will stop as soon as there are
three consecutive plasmas meeting the degradated performance
criterion.

In this case, we possibly run until 9 pm. No boronization will be
followed.

B. If the boronization has worn out substantially after 15 plasmas
(150 kJ < Wtot < 165 kJ at 3 MW, 1 MA), we will continue 1 MA
shot until we see three plasmas with Wtot <~ 150 kJ at 3 MW and 1
MA. If time allows (earlier than 5 pm), we will try boron shaker
to inject boron to the outer limiter. We will also try Li-pellet
injection. And see whether there is an improvement on the
performance.

In this case, the run will probably stop at 5 pm. No boronization
will be followed.

C. (This scenario is unlikely based on the experience we have now)
If the boronization is shown to be a "bust" (3 consecutive
plasmas at Wtot < 150 kJ at 1 MA, 3 MW Prf), we will try the
boron shaker and Li-pellet injections. We may also do N2 puff
into RF heated L-mode and identify the dominant Mo sources.

In this case, the run will definitely stop at 5 pm.

Physics Operators Plans

Entered: Jun 9 2005 11:35:28:080PM

Author: Joseph Snipes

Engineering setup for Friday, 10 June 2005

MP #417: Post-boronization evaluation

Session leader: Y. Lin
Physics operator: J. Snipes

Overnight boronization with the following parameters:
. dP of 120 to 140 psi
. scan from 50 cm to 103 cm with dwell at 78.5 cm

ECDC in D2 prior to first plasma discharge

Run begins at 09:00 and ends at 21:00.

Power systems as on 1050608021 (1.0 MA, 5.4 T, SNL 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 Hybrid DISABLED (PG1)
leave B-side upper with whatever Hybrid disabled
fill B-main (C-side) with 30 psi D2 Hybrid enabled (PG3)
NINJA not used today

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

-------------------------------------------------------------------------------
ICRF Setup: All transmitters in run on at 08:30.
-------------------------------------------------------------------------------
Plan: see SL_PLAN

Session Leader Summaries

Entered: Jun 13 2005 03:46:51:317PM

Author: Yijun Lin

A successful run. Total 48 shots, in which about 30 shots have at
least 3 MW RF.

Performance peaked at about shot 20, Wtot 210 kJ at 4 MW and 170 kJ at
3 MW. The flat top of performance last for about 8 plasmas for 4 MW
and about 15 plasmas for 3 MW, then definite deterioration was
observed. After shot 40, the performance went to be marginally 'good',
Wtot ~ 150 kJ at 3 MW. Also starting from this point, 4 MW and 3 MW gave about
the same Wtot. After shot 47, the
performance is below 'good performance', with Wtot < 150 kJ. The last shot,
shot 48, only got 136 kJ at 3 MW.

H/D level was 4-6% all day.

Mo level was significantly lower than pre-boronization. Ti is also
insignificant, although visible. Prad crept up shot by shot slowly,
and finally deteriorate the performance.

The total neutrons today is 5.7e14. 2nd highest in C-Mod history.

Physics Operator Summaries

Entered: Jun 10 2005 05:02:09:010PM

Author: Joseph Snipes

The machine ran well but there were a number of difficulties maintaining the breakdown after the boronization. I was physop up through shot 30 and there were 20 plasmas, 3 fizzles, and 7 duds. The plasmas that went were all full length with RF and good performance except for shot 15 which disrupted just after the start of the RF due to overheating of the divertor, apparently the Tungsten brush tiles. The boronization kept up until at least shot 30 with a number of plasmas exceeding 200 kJ and a neutron alert by mid afternoon. So, the run continued until 9:00 pm. Granetz took over as physop after 5:00 pm.

Entered: Jun 10 2005 09:30:01:590PM

Author: Robert Granetz

Physop summary for latter part of Friday 10 June 2005:

MP #417: How long does boronization last?

Session leader: Y. Lin/S. Wukitch
Physics operator: R. Granetz

I took over as physop from Joe Snipes after shot 30. We continued running
1 MA, 5.4 T, SNL fiducial plasmas for the RF, with the goal of finding out
if/when the good confinement afforded by last night's boronization would
wear off. It clearly did wear off as the run progressed, starting first at
the 5 MW level, then the 4 MW level, and finally even the 3 MW level. See
Yijun's session leader summary for details.

After I took over, the machine ran well until we had a disruption (confirmed
moly injection) on shot 35. Then there were four duds over the next 6
shots. After tweaking Bz0, the remainder of the run went well.

Oh yes, there is one other important conclusion from today's run. Although
we had an air leak earlier this week (6 torr on a humid Monday morning)
a single day's bake brought the machine right back to its pre-leak condition.

Scorecard: 34 plasmas
3 fizzles
11 duds (2 due to power supply problems)
0 tests or no-power shot cycles
----------
48 total shot cycles

Session Leader Comments

Jun 10 2005 10:15:08:630AM 1050610001 Yijun Lin fizzle

Jun 10 2005 11:40:34:333AM 1050610003 Yijun Lin Plasma, 5.4 T, 1 MA, target nl 1e20 m^-2, LSN, deuterium plasma.
RF: 3 MW total, [0.7, 1.1] sec from J + E antennas
3.8 MW total, [1.1, 1.5] sec from J + E antennas.
result: plasma (not counted for the MP)
Little RF power due to mismatching.

Next: repeat.

Jun 10 2005 10:15:23:943AM 1050610004 Yijun Lin fizzle

Jun 10 2005 11:40:42:083AM 1050610005 Yijun Lin Plasma, 5.4 T, 1 MA, target nl 1e20 m^-2, LSN, deuterium plasma.
RF: 3 MW total, [0.7, 1.1] sec from J + E antennas
3.8 MW total, [1.1, 1.5] sec from J + E antennas.
result: plasma (not counted for the MP)
Little RF power due to mismatching on E and too high neutral pressure for J.

Next: repeat.

Jun 10 2005 10:47:43:067AM 1050610006 Yijun Lin dud

Jun 10 2005 10:59:30:317AM 1050610007 Yijun Lin fizzle

Jun 10 2005 11:40:13:567AM 1050610008 Yijun Lin Plasma, 5.4 T, 1 MA, target nl 1e20 m^-2, LSN, deuterium plasma.
RF: 3 MW total, [0.7, 1.1] sec from J + E antennas
3.8 MW total, [1.1, 1.5] sec from J + E antennas.
result: plasma. H-mode from E power only. J ant faulted due to high neutral pressure.
H89 1.3, Wtot 110 kJ at 0.8 MW.

Next: repeat.

Jun 10 2005 11:40:04:630AM 1050610009 Yijun Lin Plasma, 5.4 T, 1 MA, target nl 1e20 m^-2, LSN, deuterium plasma.
RF: 3 MW total, [0.7, 1.1] sec from J + E antennas
3.8 MW total, [1.1, 1.5] sec from J + E antennas.
result: plasma. Hmode. J port was still troubling at neutral pressure.
Wtot 115 kJ at 1.3 MW. H89 1.3
Next: repeat.

Jun 10 2005 11:41:57:943AM 1050610010 Yijun Lin Plasma, 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma.
RF: 3 MW total, [0.7, 1.1] sec from J + E antennas
3.8 MW total, [1.1, 1.5] sec from J + E antennas.
result: plasma. Hmode. J port was still troubling at neutral pressure.

Next: lower target density to 0.8e20, so that we can expediate the reduction of neutral pressure to help J antenna to run.

Jun 10 2005 11:57:34:630AM 1050610011 Yijun Lin Plasma: 5.4 T, 1 MA, target nl .8e20 m^-2, LSN, deuterium plasma.
RF:
3 MW total, [0.7, 1.1] sec from J + E antennas
3.8 MW total, [1.1, 1.5] sec from J + E antennas.
result: plasma. Hmode.
Wtot = 140 kJ at 3 MW. Wtot was still rising while J port faulted out due to mismatch.

Next: repeat

Jun 10 2005 12:09:26:600PM 1050610012 Yijun Lin Plasma: 5.4 T, 1 MA, target nl .8e20 m^-2, LSN, deuterium plasma.
RF:
3 MW total, [0.7, 1.1] sec from J + E antennas
3.8 MW total, [1.1, 1.5] sec from J + E antennas.
result: plasma. Long EDA Hmode.
Wtot = 155 kJ at 3 MW. Wtot was still rising while J port faulted out

Next: go back to nl 1.0.

Jun 10 2005 12:24:54:960PM 1050610013 Yijun Lin Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma.
RF:
3 MW total, [0.7, 1.1] sec from J + E antennas
3.8 MW total, [1.1, 1.5] sec from J + E antennas.
result: plasma. Long EDA Hmode.
140 kJ @ 3.0 MW
Next:

Jun 10 2005 12:43:08:833PM 1050610014 Yijun Lin dud
Cell and power room access, for H/D, DNB, and RF.
FMIT #1 came back with no reason. It is now on run-on and probably be ready
for next shot.

Jun 10 2005 01:04:10:130PM 1050610015 Yijun Lin Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma.
RF:
3 MW total, [0.7, 1.1] sec from J + E antennas
3.7 MW total, [1.1, 1.5] sec from J + E antennas.
result: plasma. disrupted 0.76 sec.
H/D 4%
Next: have D port power.

Jun 10 2005 01:25:28:583PM 1050610016 Yijun Lin Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma.
RF:
3 MW total, [0.7, 1.1] sec from J + E antennas
4.0 MW total, [1.1, 1.5] sec from J + E + D antennas.
result: plasma.
161 kJ @ 3.0 MW. H89 = 1.5
next: repeat.

Jun 10 2005 01:28:27:100PM 1050610017 Yijun Lin Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma.
RF:
3 MW total, [0.7, 1.1] sec from J + E antennas
4.0 MW total, [1.1, 1.5] sec from J + E + D antennas.
result: plasma.
177 kJ @ 3.1 MW, H89 1.6
201 kJ @ 3.8 MW. H89 1.8
next: repeat. main pump gate valve will be closed for next shot.

Jun 10 2005 01:41:20:943PM 1050610018 Yijun Lin Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma.
RF:
3 MW total, [0.7, 1.1] sec from J + E antennas
4.0 MW total, [1.1, 1.5] sec from J + E + D antennas.
result: plasma.
177 kJ @ 3.0 MW
201 kJ @ 3.7 MW
main pump gate valve closed for 300 secs for Blip on wall study.
next: repeat. gate valve open.

Jun 10 2005 02:16:21:117PM 1050610019 Yijun Lin dud. (possibly related to the gate valve closing in shot 18)
I will close the gate valve less frequently or until I get reasonable number of good plasmas.

Delay due to camac highway problems. (J. Bosco is working on it).

Jun 10 2005 02:33:01:397PM 1050610020 Yijun Lin Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma.
RF:
3 MW total, [0.7, 1.1] sec from J + E antennas
4.0 MW total, [1.1, 1.5] sec from J + E + D antennas.
result: plasma.

(long delay for highway work. No camac highway 5. No neutron data, H/D, HIREX, and gas pressure data)
154 kJ @ 3.0 MW
203 kJ @ 4.1 MW
next: repeat.

Jun 10 2005 03:03:55:147PM 1050610020 Yijun Lin Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma.
RF:
3 MW total, [0.7, 1.1] sec from J + E antennas
4.0 MW total, [1.1, 1.5] sec from J + E + D antennas.
result: plasma.

154 kJ @ 3.0 MW. E port faulted in the early part of H-mode
203 kJ @ 4.1 MW

(long delay for highway work. No camac highway 5. No neutron data, H/D, HIREX, and gas pressure, and some bolometry data.)

Wait until the highway is fixed before attempting next plasma.

Temporarily, only the following data are available on highway 5: Gas and neutrons, and some spectroscopic data.

Jun 10 2005 03:03:29:647PM 1050610021 Yijun Lin Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma.
RF:
3 MW total, [0.7, 1.1] sec from J + E antennas
4.0 MW total, [1.1, 1.5] sec from J + E + D antennas.
result: plasma.
154 kJ @ 3.1 MW. Wtot was still rising when J faulted.
209 kJ @ 4.1 MW

next: repeat

Jun 10 2005 03:20:57:747PM 1050610022 Yijun Lin Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma.
RF:
3 MW total, [0.7, 1.1] sec from J + E antennas
4.0 MW total, [1.1, 1.5] sec from J + E + D antennas.
result: plasma. (injection at 1.2 sec, but plasma performance recovered)
173 kJ @ 3.1 MW (this time, there was no antenna trip while Wtot was rising)
202 kJ @ 4.1 MW

H/D 4-5%

next: repeat

Jun 10 2005 03:28:33:213PM 1050610023 Yijun Lin Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma.
RF:
3 MW total, [0.7, 1.1] sec from J + E antennas
4.0 MW total, [1.1, 1.5] sec from J + E + D antennas.
result: plasma.
164 kJ @ 3.1 MW (E faulted during Wtot rising)
199 kJ @ 4.1 MW

next: repeat

Jun 10 2005 03:42:13:480PM 1050610024 Yijun Lin Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma.
RF:
3 MW total, [0.7, 1.1] sec from J + E antennas
4.0 MW total, [1.1, 1.5] sec from J + E + D antennas.
result: plasma.
164 kJ @ 3.1 MW (J and E clean)
202 kJ @ 4.1 MW
next: repeat

Jun 10 2005 03:51:51:357PM 1050610025 Yijun Lin dud.

Next: disable Ar. Note Ar has been puffed in since shot 13.

Jun 10 2005 04:04:26:010PM 1050610026 Yijun Lin Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma.
RF:
3 MW total, [0.7, 1.1] sec from J + E antennas
4.0 MW total, [1.1, 1.5] sec from J + E + D antennas.
result: plasma.
163 kJ @ 3.1 MW (J and E a few faults)
195 kJ @ 4.1 MW
next: repeat

Jun 10 2005 04:27:18:777PM 1050610027 Yijun Lin dud.
TF signals showed only 0.3 T.
PCS problem.

Jun 10 2005 04:32:04:857PM 1050610028 Yijun Lin dud. EF3 breaker pulled

Jun 10 2005 04:51:03:403PM 1050610029 Yijun Lin Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma.
RF:
3 MW total, [0.7, 1.1] sec from J + E antennas
4.0 MW total, [1.1, 1.5] sec from J + E + D antennas.
result: plasma.
167 kJ @ 3.0 MW
181 kJ @ 3.9 MW (too many faults)

next: repeat. with gate valve closed for 5 mins

Jun 10 2005 05:12:40:670PM 1050610030 Yijun Lin Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma.
RF:
3 MW total, [0.7, 1.1] sec from J + E antennas
4.0 MW total, [1.1, 1.5] sec from J + E + D antennas.
result: plasma.
160 kJ @ 3.1 MW
194 kJ @ 4.2 MW

gate valve closed for 5 minutes this shot.
next: repeat with gate valve open

Jun 10 2005 05:17:30:653PM 1050610031 Yijun Lin Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma.
RF:
3 MW total, [0.7, 1.05] sec from J + E antennas
4.0 MW total, [1.05, 1.3] sec from J + E + D antennas.
5 MW total demand [1.3, 1.5] sec from J + E + D antennas
result: plasma.
J faulted all the way. Neutral pressure seems to be OK.
I can only blame the gate valve closing (But how?)
next: repeat

Jun 10 2005 05:28:12:700PM 1050610032 Yijun Lin Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma.
RF:
3 MW total, [0.7, 1.05] sec from J + E antennas
4.0 MW total, [1.05, 1.3] sec from J + E + D antennas.
5 MW total demand [1.3, 1.5] sec from J + E + D antennas
result: plasma.

167 kJ @ 3.1 MW
189 kJ @ 4.3 MW
206 kJ @ 5.0 MW

next: repeat

Jun 10 2005 05:41:44:607PM 1050610033 Yijun Lin Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma.
RF:
3 MW total, [0.7, 1.05] sec from J + E antennas
4.0 MW total, [1.05, 1.3] sec from J + E + D antennas.
5 MW total demand [1.3, 1.5] sec from J + E + D antennas
result: plasma.
154 kJ @ 3.0 MW (both E and J had faults)
157 kJ @ 3.8 MW (Just too many faults)

next: repeat

Jun 10 2005 05:56:48:967PM 1050610034 Yijun Lin Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma.
RF:
3 MW total, [0.7, 1.05] sec from J + E antennas
4.0 MW total, [1.05, 1.3] sec from J + E + D antennas.
5 MW total demand [1.3, 1.5] sec from J + E + D antennas
result: plasma.
163 kJ @ 3.1 MW. (still OK)
166 kJ @ 4.0 MW, (this one is getting lower without obvious injection, only with D faulting)
182 kJ @ 4.9 MW

next: repeat

Jun 10 2005 06:05:34:497PM 1050610035 Yijun Lin early disruption at 0.35 sec.

Jun 10 2005 06:18:37:620PM 1050610036 Yijun Lin dud

Jun 10 2005 06:32:51:683PM 1050610037 Yijun Lin Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma.
RF:
3 MW total, [0.7, 1.05] sec from J + E antennas
4.0 MW total, [1.05, 1.3] sec from J + E + D antennas.
5 MW total demand [1.3, 1.5] sec from J + E + D antennas
result: plasma.
144 kJ @ 3.0 MW (faults on both E and J)
178 kJ @ 4.1 MW

next: repeat

Jun 10 2005 06:43:08:480PM 1050610038 Yijun Lin dud

Jun 10 2005 07:01:25:573PM 1050610039 Yijun Lin Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma.
RF:
3 MW total, [0.7, 1.05] sec from J + E antennas
4.0 MW total, [1.05, 1.3] sec from J + E + D antennas.
5 MW total demand [1.3, 1.5] sec from J + E + D antennas

J antenna was programmed to be off between 1.25 and 1.35 sec for bolometry comparison.
result: plasma. (3 H-modes instead of 1 long EDA)
156 kJ @ 3.1 MW
next: repeat (no more notch on J)

Jun 10 2005 07:15:09:980PM 1050610040 Yijun Lin Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma.
RF:
3 MW total, [0.7, 1.05] sec from J + E antennas
4.0 MW total, [1.05, 1.3] sec from J + E + D antennas.
5 MW total demand [1.3, 1.5] sec from J + E + D antennas
result: plasma. (1 long EDA)

155 kJ @ 3.0 MW (two shots in a row, just above 150 kJ. we are riding the downtrend).
155 kJ @ 4.1 MW (no more gain at higher power).
165 kJ @ 4.9 MW

next: repeat

Jun 10 2005 07:22:00:573PM 1050610041 Yijun Lin dud

Jun 10 2005 07:35:48:963PM 1050610042 Yijun Lin dud. two in a row.

Jun 10 2005 08:07:13:683PM 1050610043 Yijun Lin Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma.
RF:
3 MW total, [0.7, 1.05] sec from J + E antennas
4.0 MW total, [1.05, 1.3] sec from J + E + D antennas.
5 MW total demand [1.3, 1.5] sec from J + E + D antennas
result: plasma. (1 long EDA)

149 kJ @ 3.1 MW (Wtot < 150 kJ at clean RF at 3 MW. Definitely rolled-over)
148 kJ @ 4.1 MW
166 kJ @ 4.8 MW

next: repeat

Jun 10 2005 08:08:44:887PM 1050610044 Yijun Lin Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma.
RF:
3 MW total, [0.7, 1.05] sec from J + E antennas
4.0 MW total, [1.05, 1.3] sec from J + E + D antennas.
5 MW total demand [1.3, 1.5] sec from J + E + D antennas
result: plasma. (1 long EDA)

157 kJ @ 3.0 MW (somewhat higher. Is it because J port started up later?)
149 kJ @ 4.1 MW
164 kJ @ 4.8 MW

next: repeat

Jun 10 2005 08:19:34:980PM 1050610045 Yijun Lin Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma.
RF:
3 MW total, [0.7, 1.05] sec from J + E antennas
4.0 MW total, [1.05, 1.3] sec from J + E + D antennas.
5 MW total demand [1.3, 1.5] sec from J + E + D antennas
result: plasma.
J faulted out in the beginning, probably due to neutral pressure.

next: repeat. Start J port at 0.8 sec to increase the chance for it to run.

Jun 10 2005 08:32:46:170PM 1050610046 Yijun Lin Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma.
RF:
3 MW total, [0.7, 1.05] sec from J + E antennas
4.0 MW total, [1.05, 1.3] sec from J + E + D antennas.
5 MW total demand [1.3, 1.5] sec from J + E + D antennas
result: plasma.

J port faulted out. I suspect the neutral pressure is still too high for J.
next: lower target density at 0.9e20 and still start up J at 0.8 sec.

Jun 10 2005 08:48:40:530PM 1050610047 Yijun Lin Plasma: 5.4 T, 1 MA, target nl .9e20 m^-2, LSN, deuterium plasma.
RF:
3 MW total, [0.7, 1.05] sec from J + E antennas
4.0 MW total, [1.05, 1.3] sec from J + E + D antennas.
5 MW total demand [1.3, 1.5] sec from J + E + D antennas
result: plasma. 4 H-modes. J ran at this reduced target density.
140 kJ @ 3.0 MW
142 kJ @ 3.9 MW
156 kJ @ 4.6 MW

next: repeat (will be the last shot for this extended run)

Jun 10 2005 09:00:47:090PM 1050610048 Yijun Lin Plasma: 5.4 T, 1 MA, target nl .9e20 m^-2, LSN, deuterium plasma.
RF:
3 MW total, [0.7, 1.05] sec from J + E antennas
4.0 MW total, [1.05, 1.3] sec from J + E + D antennas.
5 MW total demand [1.3, 1.5] sec from J + E + D antennas
result: plasma.
136 kJ @ 2.9 MW (now it is at the level of mediocre/bad performance).
142 kJ @ 3.9 MW

End of run

Physics Operator Comments

Jun 10 2005 09:47:46:117AM 1050610001 Joseph Snipes Shot 1: Copied shot 1050426022 and then removed the pre-programmed deuterium gas puff in segment 2. Copied segment 1 from shot 1050609027 to get yesterday's startup. Since boronization may increase the gas from the walls, I reduced the prepuff from 36 ms to 30 ms duration. Delay before shot 1 to repair the ratiomatic pressure gauge.

Jun 10 2005 09:48:07:913AM 1050610001 Joseph Snipes Shot 1: Copied shot 1050426022 and then removed the pre-programmed deuterium gas puff in segment 2. Copied segment 1 from shot 1050608021 for the startup. Fizzle!

Jun 10 2005 09:49:30:960AM 1050610002 Joseph Snipes Shot 2: Ratiomatic filament was changed, so there could be a calibration error. Assume the calibration is OK and that the boronization loaded the walls. So, I've dropped the prepuff by a factor of two to 14 ms duration. Dud!

Jun 10 2005 10:06:14:710AM 1050610003 Joseph Snipes Shot 3: Add 6 ms more prepuff to 20 ms duration. Good shot. Late breakdown at 8 ms, but otherwise the startup looks decent.

Jun 10 2005 11:19:15:490AM 1050610004 Joseph Snipes Shot 4: Add 6 ms more prepuff to 20 ms duration. Fizzle!

Jun 10 2005 10:43:06:037AM 1050610005 Joseph Snipes Shot 5: Reduced prepuff by 2 ms to 18 ms duration and reduced Br0 by 0.25 mT
to 0 mT. Good shot.

Jun 10 2005 10:47:59:053AM 1050610006 Joseph Snipes Shot 6: Reduced prepuff to 17 ms duration. Dud!

Jun 10 2005 10:59:28:677AM 1050610007 Joseph Snipes Shot 7: Increased prepuff by 4 ms to 21 ms duration. Fizzle!

Jun 10 2005 11:12:16:240AM 1050610008 Joseph Snipes Shot 8: Reduced prepuff by 1 ms to 20 ms duration. Good shot.

Jun 10 2005 11:34:07:880AM 1050610009 Joseph Snipes Shot 9: Extended Ip out to 1.5 s at 1.05 MA. Reduced prepuff by 1 ms to 19 ms duration. Good shot.

Jun 10 2005 11:39:36:443AM 1050610010 Joseph Snipes Shot 10: Reduced prepuff by 1 ms to 18 ms duration. Good shot.

Jun 10 2005 11:50:41:240AM 1050610011 Joseph Snipes Shot 11: Reduced nl04 to 0.8 x 10^20 m^-2. Good shot.

Jun 10 2005 12:08:47:117PM 1050610012 Joseph Snipes Shot 12: Repeat. Good shot. Nice long EDA H-mode even though RF did not stay on.

Jun 10 2005 12:19:13:523PM 1050610013 Joseph Snipes Shot 13: Returned to nl04 = 1.05 x 10^20 m^-2. Enabled Ar gas puff from 0.3 to 0.33 s. Good shot.

Jun 10 2005 12:32:34:740PM 1050610014 Joseph Snipes Shot 14: Increased Ar puff to 50 ms duration from 0.3 to 0.35 s. Dud!

Jun 10 2005 01:03:06:553PM 1050610015 Joseph Snipes Shot 15: Decreased EF4 current from -1280 A to -1295 A. Increased prepuff by 1 ms to 19 ms duration. Disrupted at 0.76 s. Molten metal spews forth on WIDE2 camera view from the area of the Tungsten brush tiles in the lower outer divertor.

Jun 10 2005 01:10:11:490PM 1050610016 Joseph Snipes Shot 16: Repeat. Good shot.

Jun 10 2005 01:26:28:693PM 1050610017 Joseph Snipes Shot 17: Asked to close the main pump gate valve after the next shot for Bruce.
But, the directions were not heeded. Good shot.

Jun 10 2005 01:34:23:460PM 1050610018 Joseph Snipes Shot 18: Asked once again to close the gate valve after shot 18. Good shot.

Jun 10 2005 01:46:56:147PM 1050610019 Joseph Snipes Shot 19: Gate valves re-enabled to stay open after shot 19. Increased Ar puff duration to 70 ms at John's request. Dud!

Jun 10 2005 02:32:05:537PM 1050610020 Joseph Snipes Shot 20: Added 2 ms to the prepuff to make it 21 ms duration. Good shot. Over 200 kJ with 4 MW of ICRF.

Jun 10 2005 03:01:33:367PM 1050610021 Joseph Snipes Shot 21: Repeat. Good shot.

Jun 10 2005 03:09:00:287PM 1050610022 Joseph Snipes Shot 22: Reduced EF4 current by 10 A to -1305 A. Good shot.

Jun 10 2005 03:23:27:760PM 1050610023 Joseph Snipes Shot 23: Repeat. Good shot.

Jun 10 2005 03:41:41:933PM 1050610024 Joseph Snipes Shot 24: Repeat. Good shot.

Jun 10 2005 03:49:33:277PM 1050610025 Joseph Snipes Shot 25: Repeat. Dud!

Jun 10 2005 04:10:17:510PM 1050610025 Joseph Snipes Shot 26: Increased EF4 current by 15 A to -1290 A. Good shot.

Jun 10 2005 04:28:02:730PM 1050610027 Joseph Snipes Shot 27: Reduced prepuff by 2 ms to 19 ms duration. Power supply fault. Very low TF at 0.3 T. Apparently, my load into model was a second too late.

Jun 10 2005 04:32:12:747PM 1050610028 Joseph Snipes Shot 28: Try again. Dud. EF3 breaker pulled out.

Jun 10 2005 04:47:14:060PM 1050610029 Joseph Snipes Shot 29: In case there is still something wrong with the hybrid setup, I've reloaded shot 1050610026. We will try another shot. Good shot.

Jun 10 2005 05:03:36:030PM 1050610030 Joseph Snipes Shot 30: Gate valve to be closed after this shot. Good shot.

Jun 10 2005 05:09:16:920PM 1050610031 Robert Granetz Granetz taking over as physics operator prior to this shot.

Jun 10 2005 05:19:53:670PM 1050610031 Robert Granetz Plasma. Good shot. Breakdown pressure came down, but it's still higher than
usual. Torus gate valve remained open for this shot, and will remain open for
the rest of tonight's shots. Prf=1-1.5 MW only. No power from J-port.
Wth=110 kJ. Video cameras are not working. H/(H+D)=4%.

Next shot: repeat, no changes. The goal is to see if/when the effects of
boronization wear off.

Jun 10 2005 05:51:33:730PM 1050610032 Robert Granetz Plasma. Good shot. Prf=4+ MW. Wth=185-200 kJ. H/(H+D)=4.5%.

Next shot: reduce pre-fill gas pulse to 20 ms.

Jun 10 2005 05:50:53:823PM 1050610033 Robert Granetz Plasma. Good shot. Prf=3-4 MW. Wth=150 kJ. H/(H+D)=4-5%

Next shot: repeat, no changes

Jun 10 2005 06:01:10:090PM 1050610034 Robert Granetz Plasma. Good shot. Prf=4+ MW. Wth=150-175 kJ. H/(H+D)=4-5%

Next shot: repeat, no changes

Jun 10 2005 06:35:08:403PM 1050610035 Robert Granetz Plasma. Disrupted early (t=0.35) due to molybdenum injection. This is only
the second disruption of the day so far.

Next shot: try again, no changes.

Jun 10 2005 06:34:42:933PM 1050610036 Robert Granetz Dud. Inexplicable. All the traces overlay. Null looks good.
Maybe it has something to do with the preceding disruption.

Next shot: no changes, just try again.

Jun 10 2005 06:37:32:217PM 1050610037 Robert Granetz Plasma. Good shot. Prf=3-4 MW. Wth=150 kJ. H/(H+D)=5%.
Late breakdown.

Next shot: no changes.

Jun 10 2005 06:43:36:683PM 1050610038 Robert Granetz Dud. Null is fine.

Next shot: increase pre-fill by 2 ms.

Jun 10 2005 07:01:34:090PM 1050610039 Robert Granetz Plasma. Good shot. J-port was intentionally turned off for 0.5 s to
investigate bolometry and molybdenum measurements. At 3 MW, Wth=150 kJ.
H/(H+D)=4%.

Next shot: no changes.

Jun 10 2005 07:16:11:857PM 1050610040 Robert Granetz Plasma. Good shot. Prf = 3 -> 4 -> 4+ MW. Wth=150 kJ. H/(H+D)=5%.
Seems like the extra RF power above 3 MW is not increasing the stored
energy at all.

Next shot: no changes.

Jun 10 2005 07:24:03:310PM 1050610041 Robert Granetz Dud.

Next shot: add another 2 ms to pre-fill.

Jun 10 2005 07:39:29:590PM 1050610042 Robert Granetz Dud.

Next shot: add -15 amps from IC_EF4 (-1290 -> -1305)

Jun 10 2005 07:53:22:963PM 1050610043 Robert Granetz Plasma. Good shot. Prf = 3 -> 4 -> 4+ MW. Wth=150 kJ at best. H/(H+D)=4.5-5%.
Performance is degrading, even at 3 MW.

Next shot: repeat, no changes.

Jun 10 2005 08:10:54:433PM 1050610044 Robert Granetz Plasma. Good shot. Prf = 3 -> 4 -> 4+ MW. Wth=150 kJ at best. H/(H+D)=4.5-5%.
Performance is degrading, even at 3 MW.

Next shot: repeat, no changes.

Jun 10 2005 08:23:41:747PM 1050610045 Robert Granetz Plasma. Good shot. But no power from J-port.

Next shot: repeat, no changes.

Jun 10 2005 08:33:52:527PM 1050610046 Robert Granetz Plasma. Good shot. No power from J-port, again.

Next shot: lower nl_04 to 0.9e20 m-2 (from 1.05e20 m-2) to try and get J-port
going again.

Jun 10 2005 08:49:48:840PM 1050610047 Robert Granetz Plasma. Good shot. Prf = 3 -> 4 -> 4+ MW. Wth=130-150 kJ. H/(H+D)=4.5-5%.
Turnover in performance is obvious, even at 3 MW.

Next shot: repeat, no changes.

Jun 10 2005 09:03:52:370PM 1050610048 Robert Granetz Plasma. Good shot. Prf = 3 -> 4 MW. Wth=130 kJ. H/(H+D)=4.5%.

End of run.

Engineering Operator Comments

Shot Time Type Status Comment

1 09:31:29:740AM Plasma Ok

2 09:48:08:367AM Plasma Ok

3 10:00:40:740AM Plasma Ok

4 10:13:45:897AM Plasma Ok

5 10:26:44:287AM Plasma Ok

6 10:45:38:147AM Plasma Ok

7 10:58:08:617AM Plasma Ok

8 11:10:56:787AM Plasma Ok

9 11:23:37:630AM Plasma Ok

10 11:36:30:817AM Plasma Ok

11 11:49:18:007AM Plasma Ok

12 12:03:04:617PM Plasma Ok

13 12:17:27:647PM Plasma Ok

14 12:31:09:223PM Plasma Ok

15 12:54:02:227PM Plasma Ok

16 01:06:45:240PM Plasma Ok

17 01:19:23:083PM Plasma Ok

18 01:32:56:617PM Plasma Ok

19 01:45:38:257PM Plasma Ok

20 02:28:05:193PM Plasma Ok

21 02:55:06:943PM Plasma Ok

22 03:07:41:333PM Plasma Ok

23 03:22:12:417PM Plasma Ok

24 03:35:03:497PM Plasma Ok

25 03:47:46:043PM Plasma Ok

26 04:00:15:513PM Plasma Ok

27 04:12:40:167PM Plasma Bad PLC Camac failure

28 04:28:42:760PM Plasma Bad EF3 Problem

29 04:45:50:247PM Plasma Ok

30 04:58:27:247PM Plasma Ok

31 05:11:30:217PM Plasma Ok

32 05:23:51:230PM Plasma Ok

33 05:37:14:510PM Plasma Ok

34 05:50:17:963PM Plasma Ok

35 06:03:03:607PM Plasma Ok

36 06:16:12:120PM Plasma Ok

37 06:28:57:793PM Plasma Ok

38 06:41:39:823PM Plasma Ok

39 06:54:19:043PM Plasma Ok

40 07:07:36:607PM Plasma Ok

41 07:20:15:823PM Plasma Ok

42 07:33:56:920PM Plasma Ok

43 07:47:05:530PM Plasma Ok

44 08:00:03:823PM Plasma Ok

45 08:12:47:497PM Plasma Ok

46 08:25:16:747PM Plasma Ok

47 08:38:35:700PM Plasma Ok

48 08:56:13:670PM Plasma Ok

Session Leader Comments
Jun 10 2005 10:15:08:630AM	1050610001	Yijun Lin	fizzle
Jun 10 2005 11:40:34:333AM	1050610003	Yijun Lin	Plasma, 5.4 T, 1 MA, target nl 1e20 m^-2, LSN, deuterium plasma. RF: 3 MW total, [0.7, 1.1] sec from J + E antennas 3.8 MW total, [1.1, 1.5] sec from J + E antennas. result: plasma (not counted for the MP) Little RF power due to mismatching. Next: repeat.
Jun 10 2005 10:15:23:943AM	1050610004	Yijun Lin	fizzle
Jun 10 2005 11:40:42:083AM	1050610005	Yijun Lin	Plasma, 5.4 T, 1 MA, target nl 1e20 m^-2, LSN, deuterium plasma. RF: 3 MW total, [0.7, 1.1] sec from J + E antennas 3.8 MW total, [1.1, 1.5] sec from J + E antennas. result: plasma (not counted for the MP) Little RF power due to mismatching on E and too high neutral pressure for J. Next: repeat.
Jun 10 2005 10:47:43:067AM	1050610006	Yijun Lin	dud
Jun 10 2005 10:59:30:317AM	1050610007	Yijun Lin	fizzle
Jun 10 2005 11:40:13:567AM	1050610008	Yijun Lin	Plasma, 5.4 T, 1 MA, target nl 1e20 m^-2, LSN, deuterium plasma. RF: 3 MW total, [0.7, 1.1] sec from J + E antennas 3.8 MW total, [1.1, 1.5] sec from J + E antennas. result: plasma. H-mode from E power only. J ant faulted due to high neutral pressure. H89 1.3, Wtot 110 kJ at 0.8 MW. Next: repeat.
Jun 10 2005 11:40:04:630AM	1050610009	Yijun Lin	Plasma, 5.4 T, 1 MA, target nl 1e20 m^-2, LSN, deuterium plasma. RF: 3 MW total, [0.7, 1.1] sec from J + E antennas 3.8 MW total, [1.1, 1.5] sec from J + E antennas. result: plasma. Hmode. J port was still troubling at neutral pressure. Wtot 115 kJ at 1.3 MW. H89 1.3 Next: repeat.
Jun 10 2005 11:41:57:943AM	1050610010	Yijun Lin	Plasma, 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma. RF: 3 MW total, [0.7, 1.1] sec from J + E antennas 3.8 MW total, [1.1, 1.5] sec from J + E antennas. result: plasma. Hmode. J port was still troubling at neutral pressure. Next: lower target density to 0.8e20, so that we can expediate the reduction of neutral pressure to help J antenna to run.
Jun 10 2005 11:57:34:630AM	1050610011	Yijun Lin	Plasma: 5.4 T, 1 MA, target nl .8e20 m^-2, LSN, deuterium plasma. RF: 3 MW total, [0.7, 1.1] sec from J + E antennas 3.8 MW total, [1.1, 1.5] sec from J + E antennas. result: plasma. Hmode. Wtot = 140 kJ at 3 MW. Wtot was still rising while J port faulted out due to mismatch. Next: repeat
Jun 10 2005 12:09:26:600PM	1050610012	Yijun Lin	Plasma: 5.4 T, 1 MA, target nl .8e20 m^-2, LSN, deuterium plasma. RF: 3 MW total, [0.7, 1.1] sec from J + E antennas 3.8 MW total, [1.1, 1.5] sec from J + E antennas. result: plasma. Long EDA Hmode. Wtot = 155 kJ at 3 MW. Wtot was still rising while J port faulted out Next: go back to nl 1.0.
Jun 10 2005 12:24:54:960PM	1050610013	Yijun Lin	Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma. RF: 3 MW total, [0.7, 1.1] sec from J + E antennas 3.8 MW total, [1.1, 1.5] sec from J + E antennas. result: plasma. Long EDA Hmode. 140 kJ @ 3.0 MW Next:
Jun 10 2005 12:43:08:833PM	1050610014	Yijun Lin	dud Cell and power room access, for H/D, DNB, and RF. FMIT #1 came back with no reason. It is now on run-on and probably be ready for next shot.
Jun 10 2005 01:04:10:130PM	1050610015	Yijun Lin	Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma. RF: 3 MW total, [0.7, 1.1] sec from J + E antennas 3.7 MW total, [1.1, 1.5] sec from J + E antennas. result: plasma. disrupted 0.76 sec. H/D 4% Next: have D port power.
Jun 10 2005 01:25:28:583PM	1050610016	Yijun Lin	Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma. RF: 3 MW total, [0.7, 1.1] sec from J + E antennas 4.0 MW total, [1.1, 1.5] sec from J + E + D antennas. result: plasma. 161 kJ @ 3.0 MW. H89 = 1.5 next: repeat.
Jun 10 2005 01:28:27:100PM	1050610017	Yijun Lin	Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma. RF: 3 MW total, [0.7, 1.1] sec from J + E antennas 4.0 MW total, [1.1, 1.5] sec from J + E + D antennas. result: plasma. 177 kJ @ 3.1 MW, H89 1.6 201 kJ @ 3.8 MW. H89 1.8 next: repeat. main pump gate valve will be closed for next shot.
Jun 10 2005 01:41:20:943PM	1050610018	Yijun Lin	Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma. RF: 3 MW total, [0.7, 1.1] sec from J + E antennas 4.0 MW total, [1.1, 1.5] sec from J + E + D antennas. result: plasma. 177 kJ @ 3.0 MW 201 kJ @ 3.7 MW main pump gate valve closed for 300 secs for Blip on wall study. next: repeat. gate valve open.
Jun 10 2005 02:16:21:117PM	1050610019	Yijun Lin	dud. (possibly related to the gate valve closing in shot 18) I will close the gate valve less frequently or until I get reasonable number of good plasmas. Delay due to camac highway problems. (J. Bosco is working on it).
Jun 10 2005 02:33:01:397PM	1050610020	Yijun Lin	Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma. RF: 3 MW total, [0.7, 1.1] sec from J + E antennas 4.0 MW total, [1.1, 1.5] sec from J + E + D antennas. result: plasma. (long delay for highway work. No camac highway 5. No neutron data, H/D, HIREX, and gas pressure data) 154 kJ @ 3.0 MW 203 kJ @ 4.1 MW next: repeat.
Jun 10 2005 03:03:55:147PM	1050610020	Yijun Lin	Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma. RF: 3 MW total, [0.7, 1.1] sec from J + E antennas 4.0 MW total, [1.1, 1.5] sec from J + E + D antennas. result: plasma. 154 kJ @ 3.0 MW. E port faulted in the early part of H-mode 203 kJ @ 4.1 MW (long delay for highway work. No camac highway 5. No neutron data, H/D, HIREX, and gas pressure, and some bolometry data.) Wait until the highway is fixed before attempting next plasma. Temporarily, only the following data are available on highway 5: Gas and neutrons, and some spectroscopic data.
Jun 10 2005 03:03:29:647PM	1050610021	Yijun Lin	Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma. RF: 3 MW total, [0.7, 1.1] sec from J + E antennas 4.0 MW total, [1.1, 1.5] sec from J + E + D antennas. result: plasma. 154 kJ @ 3.1 MW. Wtot was still rising when J faulted. 209 kJ @ 4.1 MW next: repeat
Jun 10 2005 03:20:57:747PM	1050610022	Yijun Lin	Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma. RF: 3 MW total, [0.7, 1.1] sec from J + E antennas 4.0 MW total, [1.1, 1.5] sec from J + E + D antennas. result: plasma. (injection at 1.2 sec, but plasma performance recovered) 173 kJ @ 3.1 MW (this time, there was no antenna trip while Wtot was rising) 202 kJ @ 4.1 MW H/D 4-5% next: repeat
Jun 10 2005 03:28:33:213PM	1050610023	Yijun Lin	Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma. RF: 3 MW total, [0.7, 1.1] sec from J + E antennas 4.0 MW total, [1.1, 1.5] sec from J + E + D antennas. result: plasma. 164 kJ @ 3.1 MW (E faulted during Wtot rising) 199 kJ @ 4.1 MW next: repeat
Jun 10 2005 03:42:13:480PM	1050610024	Yijun Lin	Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma. RF: 3 MW total, [0.7, 1.1] sec from J + E antennas 4.0 MW total, [1.1, 1.5] sec from J + E + D antennas. result: plasma. 164 kJ @ 3.1 MW (J and E clean) 202 kJ @ 4.1 MW next: repeat
Jun 10 2005 03:51:51:357PM	1050610025	Yijun Lin	dud. Next: disable Ar. Note Ar has been puffed in since shot 13.
Jun 10 2005 04:04:26:010PM	1050610026	Yijun Lin	Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma. RF: 3 MW total, [0.7, 1.1] sec from J + E antennas 4.0 MW total, [1.1, 1.5] sec from J + E + D antennas. result: plasma. 163 kJ @ 3.1 MW (J and E a few faults) 195 kJ @ 4.1 MW next: repeat
Jun 10 2005 04:27:18:777PM	1050610027	Yijun Lin	dud. TF signals showed only 0.3 T. PCS problem.
Jun 10 2005 04:32:04:857PM	1050610028	Yijun Lin	dud. EF3 breaker pulled
Jun 10 2005 04:51:03:403PM	1050610029	Yijun Lin	Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma. RF: 3 MW total, [0.7, 1.1] sec from J + E antennas 4.0 MW total, [1.1, 1.5] sec from J + E + D antennas. result: plasma. 167 kJ @ 3.0 MW 181 kJ @ 3.9 MW (too many faults) next: repeat. with gate valve closed for 5 mins
Jun 10 2005 05:12:40:670PM	1050610030	Yijun Lin	Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma. RF: 3 MW total, [0.7, 1.1] sec from J + E antennas 4.0 MW total, [1.1, 1.5] sec from J + E + D antennas. result: plasma. 160 kJ @ 3.1 MW 194 kJ @ 4.2 MW gate valve closed for 5 minutes this shot. next: repeat with gate valve open
Jun 10 2005 05:17:30:653PM	1050610031	Yijun Lin	Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma. RF: 3 MW total, [0.7, 1.05] sec from J + E antennas 4.0 MW total, [1.05, 1.3] sec from J + E + D antennas. 5 MW total demand [1.3, 1.5] sec from J + E + D antennas result: plasma. J faulted all the way. Neutral pressure seems to be OK. I can only blame the gate valve closing (But how?) next: repeat
Jun 10 2005 05:28:12:700PM	1050610032	Yijun Lin	Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma. RF: 3 MW total, [0.7, 1.05] sec from J + E antennas 4.0 MW total, [1.05, 1.3] sec from J + E + D antennas. 5 MW total demand [1.3, 1.5] sec from J + E + D antennas result: plasma. 167 kJ @ 3.1 MW 189 kJ @ 4.3 MW 206 kJ @ 5.0 MW next: repeat
Jun 10 2005 05:41:44:607PM	1050610033	Yijun Lin	Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma. RF: 3 MW total, [0.7, 1.05] sec from J + E antennas 4.0 MW total, [1.05, 1.3] sec from J + E + D antennas. 5 MW total demand [1.3, 1.5] sec from J + E + D antennas result: plasma. 154 kJ @ 3.0 MW (both E and J had faults) 157 kJ @ 3.8 MW (Just too many faults) next: repeat
Jun 10 2005 05:56:48:967PM	1050610034	Yijun Lin	Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma. RF: 3 MW total, [0.7, 1.05] sec from J + E antennas 4.0 MW total, [1.05, 1.3] sec from J + E + D antennas. 5 MW total demand [1.3, 1.5] sec from J + E + D antennas result: plasma. 163 kJ @ 3.1 MW. (still OK) 166 kJ @ 4.0 MW, (this one is getting lower without obvious injection, only with D faulting) 182 kJ @ 4.9 MW next: repeat
Jun 10 2005 06:05:34:497PM	1050610035	Yijun Lin	early disruption at 0.35 sec.
Jun 10 2005 06:18:37:620PM	1050610036	Yijun Lin	dud
Jun 10 2005 06:32:51:683PM	1050610037	Yijun Lin	Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma. RF: 3 MW total, [0.7, 1.05] sec from J + E antennas 4.0 MW total, [1.05, 1.3] sec from J + E + D antennas. 5 MW total demand [1.3, 1.5] sec from J + E + D antennas result: plasma. 144 kJ @ 3.0 MW (faults on both E and J) 178 kJ @ 4.1 MW next: repeat
Jun 10 2005 06:43:08:480PM	1050610038	Yijun Lin	dud
Jun 10 2005 07:01:25:573PM	1050610039	Yijun Lin	Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma. RF: 3 MW total, [0.7, 1.05] sec from J + E antennas 4.0 MW total, [1.05, 1.3] sec from J + E + D antennas. 5 MW total demand [1.3, 1.5] sec from J + E + D antennas J antenna was programmed to be off between 1.25 and 1.35 sec for bolometry comparison. result: plasma. (3 H-modes instead of 1 long EDA) 156 kJ @ 3.1 MW next: repeat (no more notch on J)
Jun 10 2005 07:15:09:980PM	1050610040	Yijun Lin	Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma. RF: 3 MW total, [0.7, 1.05] sec from J + E antennas 4.0 MW total, [1.05, 1.3] sec from J + E + D antennas. 5 MW total demand [1.3, 1.5] sec from J + E + D antennas result: plasma. (1 long EDA) 155 kJ @ 3.0 MW (two shots in a row, just above 150 kJ. we are riding the downtrend). 155 kJ @ 4.1 MW (no more gain at higher power). 165 kJ @ 4.9 MW next: repeat
Jun 10 2005 07:22:00:573PM	1050610041	Yijun Lin	dud
Jun 10 2005 07:35:48:963PM	1050610042	Yijun Lin	dud. two in a row.
Jun 10 2005 08:07:13:683PM	1050610043	Yijun Lin	Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma. RF: 3 MW total, [0.7, 1.05] sec from J + E antennas 4.0 MW total, [1.05, 1.3] sec from J + E + D antennas. 5 MW total demand [1.3, 1.5] sec from J + E + D antennas result: plasma. (1 long EDA) 149 kJ @ 3.1 MW (Wtot < 150 kJ at clean RF at 3 MW. Definitely rolled-over) 148 kJ @ 4.1 MW 166 kJ @ 4.8 MW next: repeat
Jun 10 2005 08:08:44:887PM	1050610044	Yijun Lin	Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma. RF: 3 MW total, [0.7, 1.05] sec from J + E antennas 4.0 MW total, [1.05, 1.3] sec from J + E + D antennas. 5 MW total demand [1.3, 1.5] sec from J + E + D antennas result: plasma. (1 long EDA) 157 kJ @ 3.0 MW (somewhat higher. Is it because J port started up later?) 149 kJ @ 4.1 MW 164 kJ @ 4.8 MW next: repeat
Jun 10 2005 08:19:34:980PM	1050610045	Yijun Lin	Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma. RF: 3 MW total, [0.7, 1.05] sec from J + E antennas 4.0 MW total, [1.05, 1.3] sec from J + E + D antennas. 5 MW total demand [1.3, 1.5] sec from J + E + D antennas result: plasma. J faulted out in the beginning, probably due to neutral pressure. next: repeat. Start J port at 0.8 sec to increase the chance for it to run.
Jun 10 2005 08:32:46:170PM	1050610046	Yijun Lin	Plasma: 5.4 T, 1 MA, target nl 1.e20 m^-2, LSN, deuterium plasma. RF: 3 MW total, [0.7, 1.05] sec from J + E antennas 4.0 MW total, [1.05, 1.3] sec from J + E + D antennas. 5 MW total demand [1.3, 1.5] sec from J + E + D antennas result: plasma. J port faulted out. I suspect the neutral pressure is still too high for J. next: lower target density at 0.9e20 and still start up J at 0.8 sec.
Jun 10 2005 08:48:40:530PM	1050610047	Yijun Lin	Plasma: 5.4 T, 1 MA, target nl .9e20 m^-2, LSN, deuterium plasma. RF: 3 MW total, [0.7, 1.05] sec from J + E antennas 4.0 MW total, [1.05, 1.3] sec from J + E + D antennas. 5 MW total demand [1.3, 1.5] sec from J + E + D antennas result: plasma. 4 H-modes. J ran at this reduced target density. 140 kJ @ 3.0 MW 142 kJ @ 3.9 MW 156 kJ @ 4.6 MW next: repeat (will be the last shot for this extended run)
Jun 10 2005 09:00:47:090PM	1050610048	Yijun Lin	Plasma: 5.4 T, 1 MA, target nl .9e20 m^-2, LSN, deuterium plasma. RF: 3 MW total, [0.7, 1.05] sec from J + E antennas 4.0 MW total, [1.05, 1.3] sec from J + E + D antennas. 5 MW total demand [1.3, 1.5] sec from J + E + D antennas result: plasma. 136 kJ @ 2.9 MW (now it is at the level of mediocre/bad performance). 142 kJ @ 3.9 MW End of run

Physics Operator Comments
Jun 10 2005 09:47:46:117AM	1050610001	Joseph Snipes	Shot 1: Copied shot 1050426022 and then removed the pre-programmed deuterium gas puff in segment 2. Copied segment 1 from shot 1050609027 to get yesterday's startup. Since boronization may increase the gas from the walls, I reduced the prepuff from 36 ms to 30 ms duration. Delay before shot 1 to repair the ratiomatic pressure gauge.
Jun 10 2005 09:48:07:913AM	1050610001	Joseph Snipes	Shot 1: Copied shot 1050426022 and then removed the pre-programmed deuterium gas puff in segment 2. Copied segment 1 from shot 1050608021 for the startup. Fizzle!
Jun 10 2005 09:49:30:960AM	1050610002	Joseph Snipes	Shot 2: Ratiomatic filament was changed, so there could be a calibration error. Assume the calibration is OK and that the boronization loaded the walls. So, I've dropped the prepuff by a factor of two to 14 ms duration. Dud!
Jun 10 2005 10:06:14:710AM	1050610003	Joseph Snipes	Shot 3: Add 6 ms more prepuff to 20 ms duration. Good shot. Late breakdown at 8 ms, but otherwise the startup looks decent.
Jun 10 2005 11:19:15:490AM	1050610004	Joseph Snipes	Shot 4: Add 6 ms more prepuff to 20 ms duration. Fizzle!
Jun 10 2005 10:43:06:037AM	1050610005	Joseph Snipes	Shot 5: Reduced prepuff by 2 ms to 18 ms duration and reduced Br0 by 0.25 mT to 0 mT. Good shot.
Jun 10 2005 10:47:59:053AM	1050610006	Joseph Snipes	Shot 6: Reduced prepuff to 17 ms duration. Dud!
Jun 10 2005 10:59:28:677AM	1050610007	Joseph Snipes	Shot 7: Increased prepuff by 4 ms to 21 ms duration. Fizzle!
Jun 10 2005 11:12:16:240AM	1050610008	Joseph Snipes	Shot 8: Reduced prepuff by 1 ms to 20 ms duration. Good shot.
Jun 10 2005 11:34:07:880AM	1050610009	Joseph Snipes	Shot 9: Extended Ip out to 1.5 s at 1.05 MA. Reduced prepuff by 1 ms to 19 ms duration. Good shot.
Jun 10 2005 11:39:36:443AM	1050610010	Joseph Snipes	Shot 10: Reduced prepuff by 1 ms to 18 ms duration. Good shot.
Jun 10 2005 11:50:41:240AM	1050610011	Joseph Snipes	Shot 11: Reduced nl04 to 0.8 x 10^20 m^-2. Good shot.
Jun 10 2005 12:08:47:117PM	1050610012	Joseph Snipes	Shot 12: Repeat. Good shot. Nice long EDA H-mode even though RF did not stay on.
Jun 10 2005 12:19:13:523PM	1050610013	Joseph Snipes	Shot 13: Returned to nl04 = 1.05 x 10^20 m^-2. Enabled Ar gas puff from 0.3 to 0.33 s. Good shot.
Jun 10 2005 12:32:34:740PM	1050610014	Joseph Snipes	Shot 14: Increased Ar puff to 50 ms duration from 0.3 to 0.35 s. Dud!
Jun 10 2005 01:03:06:553PM	1050610015	Joseph Snipes	Shot 15: Decreased EF4 current from -1280 A to -1295 A. Increased prepuff by 1 ms to 19 ms duration. Disrupted at 0.76 s. Molten metal spews forth on WIDE2 camera view from the area of the Tungsten brush tiles in the lower outer divertor.
Jun 10 2005 01:10:11:490PM	1050610016	Joseph Snipes	Shot 16: Repeat. Good shot.
Jun 10 2005 01:26:28:693PM	1050610017	Joseph Snipes	Shot 17: Asked to close the main pump gate valve after the next shot for Bruce. But, the directions were not heeded. Good shot.
Jun 10 2005 01:34:23:460PM	1050610018	Joseph Snipes	Shot 18: Asked once again to close the gate valve after shot 18. Good shot.
Jun 10 2005 01:46:56:147PM	1050610019	Joseph Snipes	Shot 19: Gate valves re-enabled to stay open after shot 19. Increased Ar puff duration to 70 ms at John's request. Dud!
Jun 10 2005 02:32:05:537PM	1050610020	Joseph Snipes	Shot 20: Added 2 ms to the prepuff to make it 21 ms duration. Good shot. Over 200 kJ with 4 MW of ICRF.
Jun 10 2005 03:01:33:367PM	1050610021	Joseph Snipes	Shot 21: Repeat. Good shot.
Jun 10 2005 03:09:00:287PM	1050610022	Joseph Snipes	Shot 22: Reduced EF4 current by 10 A to -1305 A. Good shot.
Jun 10 2005 03:23:27:760PM	1050610023	Joseph Snipes	Shot 23: Repeat. Good shot.
Jun 10 2005 03:41:41:933PM	1050610024	Joseph Snipes	Shot 24: Repeat. Good shot.
Jun 10 2005 03:49:33:277PM	1050610025	Joseph Snipes	Shot 25: Repeat. Dud!
Jun 10 2005 04:10:17:510PM	1050610025	Joseph Snipes	Shot 26: Increased EF4 current by 15 A to -1290 A. Good shot.
Jun 10 2005 04:28:02:730PM	1050610027	Joseph Snipes	Shot 27: Reduced prepuff by 2 ms to 19 ms duration. Power supply fault. Very low TF at 0.3 T. Apparently, my load into model was a second too late.
Jun 10 2005 04:32:12:747PM	1050610028	Joseph Snipes	Shot 28: Try again. Dud. EF3 breaker pulled out.
Jun 10 2005 04:47:14:060PM	1050610029	Joseph Snipes	Shot 29: In case there is still something wrong with the hybrid setup, I've reloaded shot 1050610026. We will try another shot. Good shot.
Jun 10 2005 05:03:36:030PM	1050610030	Joseph Snipes	Shot 30: Gate valve to be closed after this shot. Good shot.
Jun 10 2005 05:09:16:920PM	1050610031	Robert Granetz	Granetz taking over as physics operator prior to this shot.
Jun 10 2005 05:19:53:670PM	1050610031	Robert Granetz	Plasma. Good shot. Breakdown pressure came down, but it's still higher than usual. Torus gate valve remained open for this shot, and will remain open for the rest of tonight's shots. Prf=1-1.5 MW only. No power from J-port. Wth=110 kJ. Video cameras are not working. H/(H+D)=4%. Next shot: repeat, no changes. The goal is to see if/when the effects of boronization wear off.
Jun 10 2005 05:51:33:730PM	1050610032	Robert Granetz	Plasma. Good shot. Prf=4+ MW. Wth=185-200 kJ. H/(H+D)=4.5%. Next shot: reduce pre-fill gas pulse to 20 ms.
Jun 10 2005 05:50:53:823PM	1050610033	Robert Granetz	Plasma. Good shot. Prf=3-4 MW. Wth=150 kJ. H/(H+D)=4-5% Next shot: repeat, no changes
Jun 10 2005 06:01:10:090PM	1050610034	Robert Granetz	Plasma. Good shot. Prf=4+ MW. Wth=150-175 kJ. H/(H+D)=4-5% Next shot: repeat, no changes
Jun 10 2005 06:35:08:403PM	1050610035	Robert Granetz	Plasma. Disrupted early (t=0.35) due to molybdenum injection. This is only the second disruption of the day so far. Next shot: try again, no changes.
Jun 10 2005 06:34:42:933PM	1050610036	Robert Granetz	Dud. Inexplicable. All the traces overlay. Null looks good. Maybe it has something to do with the preceding disruption. Next shot: no changes, just try again.
Jun 10 2005 06:37:32:217PM	1050610037	Robert Granetz	Plasma. Good shot. Prf=3-4 MW. Wth=150 kJ. H/(H+D)=5%. Late breakdown. Next shot: no changes.
Jun 10 2005 06:43:36:683PM	1050610038	Robert Granetz	Dud. Null is fine. Next shot: increase pre-fill by 2 ms.
Jun 10 2005 07:01:34:090PM	1050610039	Robert Granetz	Plasma. Good shot. J-port was intentionally turned off for 0.5 s to investigate bolometry and molybdenum measurements. At 3 MW, Wth=150 kJ. H/(H+D)=4%. Next shot: no changes.
Jun 10 2005 07:16:11:857PM	1050610040	Robert Granetz	Plasma. Good shot. Prf = 3 -> 4 -> 4+ MW. Wth=150 kJ. H/(H+D)=5%. Seems like the extra RF power above 3 MW is not increasing the stored energy at all. Next shot: no changes.
Jun 10 2005 07:24:03:310PM	1050610041	Robert Granetz	Dud. Next shot: add another 2 ms to pre-fill.
Jun 10 2005 07:39:29:590PM	1050610042	Robert Granetz	Dud. Next shot: add -15 amps from IC_EF4 (-1290 -> -1305)
Jun 10 2005 07:53:22:963PM	1050610043	Robert Granetz	Plasma. Good shot. Prf = 3 -> 4 -> 4+ MW. Wth=150 kJ at best. H/(H+D)=4.5-5%. Performance is degrading, even at 3 MW. Next shot: repeat, no changes.
Jun 10 2005 08:10:54:433PM	1050610044	Robert Granetz	Plasma. Good shot. Prf = 3 -> 4 -> 4+ MW. Wth=150 kJ at best. H/(H+D)=4.5-5%. Performance is degrading, even at 3 MW. Next shot: repeat, no changes.
Jun 10 2005 08:23:41:747PM	1050610045	Robert Granetz	Plasma. Good shot. But no power from J-port. Next shot: repeat, no changes.
Jun 10 2005 08:33:52:527PM	1050610046	Robert Granetz	Plasma. Good shot. No power from J-port, again. Next shot: lower nl_04 to 0.9e20 m-2 (from 1.05e20 m-2) to try and get J-port going again.
Jun 10 2005 08:49:48:840PM	1050610047	Robert Granetz	Plasma. Good shot. Prf = 3 -> 4 -> 4+ MW. Wth=130-150 kJ. H/(H+D)=4.5-5%. Turnover in performance is obvious, even at 3 MW. Next shot: repeat, no changes.
Jun 10 2005 09:03:52:370PM	1050610048	Robert Granetz	Plasma. Good shot. Prf = 3 -> 4 MW. Wth=130 kJ. H/(H+D)=4.5%. End of run.

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	09:31:29:740AM	Plasma	Ok
2	09:48:08:367AM	Plasma	Ok
3	10:00:40:740AM	Plasma	Ok
4	10:13:45:897AM	Plasma	Ok
5	10:26:44:287AM	Plasma	Ok
6	10:45:38:147AM	Plasma	Ok
7	10:58:08:617AM	Plasma	Ok
8	11:10:56:787AM	Plasma	Ok
9	11:23:37:630AM	Plasma	Ok
10	11:36:30:817AM	Plasma	Ok
11	11:49:18:007AM	Plasma	Ok
12	12:03:04:617PM	Plasma	Ok
13	12:17:27:647PM	Plasma	Ok
14	12:31:09:223PM	Plasma	Ok
15	12:54:02:227PM	Plasma	Ok
16	01:06:45:240PM	Plasma	Ok
17	01:19:23:083PM	Plasma	Ok
18	01:32:56:617PM	Plasma	Ok
19	01:45:38:257PM	Plasma	Ok
20	02:28:05:193PM	Plasma	Ok
21	02:55:06:943PM	Plasma	Ok
22	03:07:41:333PM	Plasma	Ok
23	03:22:12:417PM	Plasma	Ok
24	03:35:03:497PM	Plasma	Ok
25	03:47:46:043PM	Plasma	Ok
26	04:00:15:513PM	Plasma	Ok
27	04:12:40:167PM	Plasma	Bad	PLC Camac failure
28	04:28:42:760PM	Plasma	Bad	EF3 Problem
29	04:45:50:247PM	Plasma	Ok
30	04:58:27:247PM	Plasma	Ok
31	05:11:30:217PM	Plasma	Ok
32	05:23:51:230PM	Plasma	Ok
33	05:37:14:510PM	Plasma	Ok
34	05:50:17:963PM	Plasma	Ok
35	06:03:03:607PM	Plasma	Ok
36	06:16:12:120PM	Plasma	Ok
37	06:28:57:793PM	Plasma	Ok
38	06:41:39:823PM	Plasma	Ok
39	06:54:19:043PM	Plasma	Ok
40	07:07:36:607PM	Plasma	Ok
41	07:20:15:823PM	Plasma	Ok
42	07:33:56:920PM	Plasma	Ok
43	07:47:05:530PM	Plasma	Ok
44	08:00:03:823PM	Plasma	Ok
45	08:12:47:497PM	Plasma	Ok
46	08:25:16:747PM	Plasma	Ok
47	08:38:35:700PM	Plasma	Ok
48	08:56:13:670PM	Plasma	Ok