Alcator C-Mod Run 1120522 Information

Miniproposals

Miniproposal: 296

Date Filed: 5/14/2001

Title: Confirmation of Thomson scattering density calibration using electron cyclotron emission cutoffs

First Author: Jerry Hughes

Session Leader: John Walk (shots 1-19)

Miniproposal: 355

Date Filed: 11/12/2003

Title: ICRF Testing & Conditioning

First Author: Steve Wukitch

Session Leader: Yijun Lin (shots 20-31)

Operators
Session leader(s):	John Walk,Yijun Lin
Physics operator(s):	Bill Rowan
Engineering operator(s):	Bill Cochran,Gary Dekow,Bill Byford,Ed Fitzgerald

Engineering Operator Run Comment
ECE Cutoff Calibration

Session Leader Plans

Entered: May 21 2012 01:55:55:080PM

Author: John Walk

----------------------
ECE Cutoff Calibration
----------------------

MP 296

Gas setup:

D2 primary fuel
Ar available for hirex
NINJA acceptable if requested by CXRS - consult session leader

torvac gatevalve toggle: no

boronization: no
overnight ECDC: yes
ICRF: yes
LH: no
cryopump: no
DNB: not required

Run Plan:

load shot 1120203036 equilibrium (4T, 800kA) and density ramp, add 2MW ICRF at 1 second. Based on the positions and clarity of ECE density cutoffs, vary field about original value (4T) to shift cutoff position, no changes to density ramp and ICRF.

Entered: May 21 2012 03:39:40:907PM

Author: Yijun Lin

MP355 RF conditioning and machine conditioning..

Goal:
1. make D/E run together at high power
2. debsorb as much H as possible by heating plasma with RF.

Plasmas:
LSN target: 1120510023
USN target: 1120510030

Run some LSN targets and monitor H/D. If H/D does not rise much, run USN targets until the end of the run.

D/E antennas from 0.6 to 1.5 sec. Power and sequences can change according to the progress of RF conditioning and machine conditioning.

Physics Operators Plans

Entered: May 21 2012 04:01:37:670PM

Author: Bill Rowan

Engineering setup and PhysOp plan for Run 1120522, Tuesday, May 22, 2012

AM
MP296 "Confirmation of Thomson scattering density calibration using electron cyclotron emission cutoffs"
SL: Walk
PO: Rowan

PM
MP355 "ICRF conditioning"
SL: Lin
PO: Rowan

-----------------
Engineering Setup
-----------------

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

Power systems as on: 1120203036

Acoil: +Dtop -Dbot -Jtop +Jbot (standard) Hybrid Enabled

Gas setup:

Fill B-Top with 6 psi D2 Hybrid enabled (PG4)
fill B-side lower with 1 psi Ar Hybrid DISABLED (PG1)
leave B-side upper as is Hybrid DISABLED (PG2)
fill B-main (C-side) with 40 psi D2 Hybrid enabled (PG3)
fill NINJA with 10 psi D2 DISABLED

Enable gate-valves and shutters: ECE, VUV, HiREX Sr, Xeus/LoWEUS
Leave z-bolo shutter as is (should be open)

Torvac gatevalve toggle (yes/no): no

Boronization(yes/no): no
Overnight ECDC (yes/no): yes
ICRF(yes/no): yes
LH(yes/no): no
Cryopump (yes/no): no
DNB (yes/no): yes

Vessel temperature: 35/35/35

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

Session Leader Summaries

Entered: May 22 2012 05:01:20:560PM

Author: John Walk

1120522(a) summary
------------------
ECE density cutoff calibration for TS, MP296

We completed our goal for the day, achieving ECE density cutoffs by running low field (~4T) with a steady density ramp. We attempted to use 1-2MW ICRF into the plasma at low field for density control (seeking to delay/prevent the poloidal detachment events that typically disrupt these shots) and for heating for the signal boost on the edge channels.

We were beset by fizzles throughout the run; we also initially suffered from fueling problems that kept the density too low to reach cutoff, instead simply running Ohmic or ICRF-heated L-modes into rampdown. This seemed to be the result of a problem with one of the gas valves, eventually solved by moving the fueling to the H-bottom valve as well as NINJA gas puffs from CXRS. ICRF absorption was also a problem at the lower field levels, causing a noticeable density pumpout and cooling the plasma, contrary to the desired effect. ICRF was successfully launched in later, higher-field shots however.

scorecard:
----------
19 shots
11 fizzles
3 non-cutoff plasmas
5 cutoff plasmas
----------

The non-cutoff plasmas (001,003,005) ran into rampdown, with 001 and 003 heated by 2 and 1MW ICRF respectively and 005 purely Ohmic. Neither cleared an nl04 of 1e20 due to the fueling problems, preventing them from reaching the cutoff at 4.0T. However, these shots were useful for calibration of the GPC - Amanda had requested such a shot anyway.

The cutoff plasmas (007,010,012,015,019) ran until a poloidal detachment/disruption event, typically around 1.5sec, ended the discharge. All but shot 019 were Ohmic, with shot 019 heated by 1MW ICRF from 0.5 to 1.0 seconds (the plan was for 1MW to 1.5sec, but E antenna faulted due to high neutral pressure). These plasmas typically had density ramps from ~1.0-2.0e20, and were at 4.0T, 3.9T, 4.1T, 4.2T, and 4.2T respectively (the field can be varied slightly in these discharges to shift the positions of the cutoffs, more closely matching them to TS points). Between these five discharges, we obtained channel-by-channel single-laser calibration coefficients from GPC and GPC2 indepedently (note that any given shot will only obtain viable coefficients for a subset of channels, due to lack of overlap with TS channels).

----------
019

GPC:
YAG1:
Core TS 4: 1.26 +/- 0.14
Core TS 5: 1.06 +/- 0.13
Core TS 6: 1.21 +/- 0.21
Core TS 10: 1.02 +/- 0.12
Core TS 11: 1.13 +/- 0.18
Core TS 12: 0.99 +/- 0.11
Core TS 14: 1.26 +/- 0.24
Core TS 15: 1.72 +/- 0.19

YAG2:
Core TS 4: 0.56 +/- 0.06
Core TS 5: 0.47 +/- 0.06
Core TS 6: 0.50 +/- 0.06
Core TS 10: 0.51 +/- 0.06
Core TS 11: 0.49 +/- 0.06
Core TS 12: 0.54 +/- 0.06
Core TS 14: 0.67 +/- 0.08
Core TS 15: 0.92 +/- 0.10

GPC2:
YAG1:
Core TS 5: 1.04 +/- 0.06
Core TS 8: 1.21 +/- 0.11
Core TS 9: 1.14 +/- 0.10
Core TS 11: 1.18 +/- 0.09
Core TS 12: 0.99 +/- 0.05
Core TS 13: 1.36 +/- 0.09

YAG2:
Core TS 5: 0.46 +/- 0.01
Core TS 6: 1.00 +/- 1.00
Core TS 8: 0.56 +/- 0.02
Core TS 9: 0.49 +/- 0.02
Core TS 11: 0.51 +/- 0.02
Core TS 12: 0.54 +/- 0.02
Core TS 13: 0.72 +/- 0.03
----------
015

GPC:
YAG1:
Core TS 4: 1.24 +/- 0.14
Core TS 5: 1.05 +/- 0.13
Core TS 6: 1.17 +/- 0.21
Core TS 7: 1.18 +/- 0.14
Core TS 10: 1.03 +/- 0.12
Core TS 11: 1.16 +/- 0.18
Core TS 12: 0.99 +/- 0.11
Core TS 14: 1.23 +/- 0.24

YAG2:
Core TS 4: 0.56 +/- 0.06
Core TS 5: 0.47 +/- 0.06
Core TS 6: 0.51 +/- 0.06
Core TS 7: 0.52 +/- 0.06
Core TS 10: 0.52 +/- 0.06
Core TS 11: 0.50 +/- 0.06
Core TS 12: 0.51 +/- 0.06
Core TS 14: 0.62 +/- 0.07

GPC2:
YAG1:
Core TS 5: 1.06 +/- 0.06
Core TS 6: 1.16 +/- 0.08
Core TS 8: 1.21 +/- 0.10
Core TS 9: 1.14 +/- 0.09
Core TS 12: 0.97 +/- 0.04
Core TS 13: 1.32 +/- 0.14
Core TS 14: 1.26 +/- 0.11

YAG2:
Core TS 4: 0.53 +/- 0.01
Core TS 5: 0.47 +/- 0.01
Core TS 6: 0.50 +/- 0.01
Core TS 8: 0.56 +/- 0.02
Core TS 9: 0.49 +/- 0.01
Core TS 12: 0.50 +/- 0.01
Core TS 13: 0.69 +/- 0.04
Core TS 14: 0.63 +/- 0.03
----------
012

GPC:
YAG1:
Core TS 2: 0.73 +/- 0.08
Core TS 5: 1.00 +/- 0.12
Core TS 7: 1.11 +/- 0.13
Core TS 8: 1.20 +/- 0.27
Core TS 9: 1.14 +/- 0.23
Core TS 11: 1.10 +/- 0.18
Core TS 12: 0.96 +/- 0.11
Core TS 13: 1.26 +/- 0.21

YAG2:
Core TS 2: 0.41 +/- 0.05
Core TS 5: 0.45 +/- 0.05
Core TS 7: 0.50 +/- 0.06
Core TS 8: 0.56 +/- 0.06
Core TS 9: 0.48 +/- 0.05
Core TS 11: 0.47 +/- 0.06
Core TS 12: 0.52 +/- 0.06
Core TS 13: 0.69 +/- 0.08

GPC2:
YAG1:
Core TS 2: 0.71 +/- 0.02
Core TS 9: 1.16 +/- 0.10
Core TS 10: 1.03 +/- 0.06
Core TS 12: 0.97 +/- 0.05
Core TS 13: 1.27 +/- 0.08

YAG2:
Core TS 2: 0.39 +/- 0.01
Core TS 9: 0.49 +/- 0.02
Core TS 10: 0.52 +/- 0.02
Core TS 12: 0.53 +/- 0.01
Core TS 13: 0.69 +/- 0.03
----------
010

GPC:
YAG1:
Core TS 2: 0.71 +/- 0.08
Core TS 5: 1.00 +/- 0.12
Core TS 7: 1.11 +/- 0.13
Core TS 8: 1.15 +/- 0.26
Core TS 9: 1.12 +/- 0.18
Core TS 11: 1.09 +/- 0.15
Core TS 12: 0.97 +/- 0.11
Core TS 13: 1.28 +/- 0.18

YAG2:
Core TS 2: 0.39 +/- 0.05
Core TS 5: 0.45 +/- 0.05
Core TS 7: 0.49 +/- 0.06
Core TS 8: 0.54 +/- 0.06
Core TS 9: 0.48 +/- 0.05
Core TS 11: 0.47 +/- 0.05
Core TS 12: 0.52 +/- 0.06
Core TS 13: 0.67 +/- 0.08

GPC2:
YAG1:
Core TS 1: 1.32 +/- 0.05
Core TS 4: 1.21 +/- 0.07
Core TS 6: 1.17 +/- 0.10
Core TS 8: 1.18 +/- 0.08
Core TS 9: 1.15 +/- 0.13
Core TS 10: 1.03 +/- 0.08
Core TS 12: 0.97 +/- 0.09

YAG2:
Core TS 1: 0.63 +/- 0.01
Core TS 4: 0.55 +/- 0.02
Core TS 6: 0.49 +/- 0.02
Core TS 8: 0.54 +/- 0.03
Core TS 9: 0.50 +/- 0.02
Core TS 10: 0.52 +/- 0.02
Core TS 12: 0.52 +/- 0.03
----------
007

GPC:
YAG1:
Core TS 1: 1.32 +/- 0.15
Core TS 4: 1.18 +/- 0.13
Core TS 6: 1.16 +/- 0.20
Core TS 7: 1.12 +/- 0.14
Core TS 10: 1.00 +/- 0.11
Core TS 11: 1.10 +/- 0.17
Core TS 12: 0.95 +/- 0.11
Core TS 14: 1.19 +/- 0.23

YAG2:
Core TS 1: 0.64 +/- 0.07
Core TS 4: 0.54 +/- 0.06
Core TS 6: 0.49 +/- 0.05
Core TS 7: 0.50 +/- 0.06
Core TS 10: 0.51 +/- 0.06
Core TS 11: 0.48 +/- 0.06
Core TS 12: 0.50 +/- 0.06
Core TS 14: 0.60 +/- 0.07

GPC2:
YAG1:
Core TS 1: 1.32 +/- 0.06
Core TS 2: 0.69 +/- 0.02
Core TS 5: 1.00 +/- 0.04
Core TS 7: 1.12 +/- 0.04
Core TS 9: 1.14 +/- 0.11
Core TS 10: 1.01 +/- 0.04
Core TS 12: 0.95 +/- 0.06

YAG2:
Core TS 1: 0.65 +/- 0.02
Core TS 2: 0.39 +/- 0.01
Core TS 5: 0.44 +/- 0.01
Core TS 7: 0.50 +/- 0.01
Core TS 9: 0.48 +/- 0.02
Core TS 10: 0.51 +/- 0.01
Core TS 12: 0.50 +/- 0.02
----------

These values will be refined and aggregated into a correction factor to TS density measurements. Note that the YAG2 factors are consistently ~0.5; this is consistent with our assumptions, as the previous calibration factor included reduced energy from YAG2 by about a factor of 2, resulting in density measurements increased by a factor of two for current measurements (with YAG2 at full energy).

Overall, this run, despite its difficulty with fizzles, was productive for TS density measurement calibration, as well as the calibration of GPC on the non-cutoff plasmas. HiReX and CXRS also got some shakedown work in these shots.

Physics Operator Summaries

Entered: May 23 2012 07:56:55:823AM

Author: Bill Rowan

Note that through much of the day, the nl_04 feedback was controlling PG5 (H-bottom) and PG3 (B-Main). PG3 was not providing sufficient throughput. Use of these shots as models for later runs should be done with care.

Two miniproposals were run, MP296 "Confirmation of Thomson scattering density calibration using electron cyclotron emission cutoffs," session Leader John Walk and MP355 "ICRF conditioning" session leader Yujin Lin.

Shot 1120203036 was used as the model for MP296. There was not enough throughput in PG3 to achieve the high density required for MP296. At Wolfe's suggestion, the feedback control for nl_04 was changed. For shots 001 through 004, the nl_04 feedback controlled opening of PG3. For later shots (005 through 021) in this MP, the feedback controlled both PG3 and PG5. Only PG4 was used for the prefill throughout the day.

High density disruptions at the end of shots in MP296 were typically followed by one or two fizzles. Some attempt was made to adjust fields and prefill but were not successful.

A locked mode shot (021) was run for rotation calibration of the x-ray imaging diagnostic. Shot 1120517029 was used as a model shot.

MP 355 was run without problems (022-031). The starting point for the shot was segment 02 from 1120510023. The initial plasma shot in the series for MP 355 had a high runaway content. A minor change was made in PG3 and the problem did not recur. There were no disruptions. The first shot for the MP was a fizzle and was apparently due to the disruption on the previous shot. Otherwise, there were no fizzles during this part of the run.

Alternator vibration resulted in two shots being aborted.

Score card
15 plasmas (001,003,005,007,010,012,015,019,021,024,025,028,029,030,031)
13 fizzles (002,004,006,008,009,011,013,014,016,017,018,020,022)
03 engineering failures (023, 026, 027)
-------------
31 total

Session Leader Comments

May 22 2012 09:15:41:733AM 1120522001 John Walk shot 001
--------

today we will be going for ECE density cutoffs to calibrate the Thomson Scattering system. We will be running low field (~4T) and ramping the density to move the cutoff point inwards. Subsequent shots will vary the field by small amounts to shift the cutoff radially, better optimizing for the TS data points.

attempt: load 1120203036, 4T, 800kA density ramp with nl04 from 0.8e20,
add 2MW ICRF from 1.0sec.

result: disruption at 1.4sec, density ramp from 0.4-1.0e20. Don't seem to be hitting good cutoffs here though, radiative temperature drop instead.

next: attempt to get the density higher, drop to 1MW ICRF switching halfway from D to E antenna.

May 22 2012 09:22:51:563AM 1120522002 John Walk attempt: get density higher, drop to 1MW ICRF from single antenna.

result: fizzle.

May 22 2012 09:49:50:390AM 1120522003 John Walk attempt: drop field to 4.0T from 4.1 of shot 001 (this will shift the channel positions radially inwards, try to line up GPC innermost channel with magnetic axis). Same RF as shot 002 attempt. We will also be adding Ar at 0.3sec and NINJA at 0.9sec at the request of diagnostic operators.

result: plasma into rampdown, density ramp from 0.6-0.9e20 until 1sec, then flatlines. Right on 4.0T, but still no ECE cutoffs. It appears the ICRF may be getting us some density pumpout.

next: drop the RF, go Ohmic-only for the next shot.

May 22 2012 09:55:35:983AM 1120522004 John Walk attempt: drop RF, still trying to get density higher, still at 4.0T.

result: fizzle.

May 22 2012 10:17:40:333AM 1120522005 John Walk attempt: no ICRF again, same field. We will go for NINJA assist for the density.

result: plasma to rampdown, still not enough density. NINJA puff at 1.2 pushes us above 1e20, but we still have a drop in nl04 after 0.9sec. No sign of cutoffs.

next: enable H-bottom (PG5) for additional fueling.

May 22 2012 10:23:20:333AM 1120522006 John Walk attempt: enable H-bot for additional fueling, same field and current.

result: fizzle.

May 22 2012 10:49:11:900AM 1120522007 John Walk attempt: repeat 006 with H-bottom fueling.

result: success! density ramp up to 2e20 before a detachment/disruption at 1.5sec, cutoffs look good on several inner GPC channels. Low signal on GPC2, but GPC should be enough.

next: drop field to 3.9T at same fueling to try to shift the radial position of the cutoffs.

May 22 2012 10:53:01:827AM 1120522008 John Walk attempt: same fueling, lower field to 3.9T to shift cutoff radial positions.

result: fizzle.

May 22 2012 11:05:47:213AM 1120522009 John Walk attempt: repeat 008.

result: fizzle.

May 22 2012 11:32:59:120AM 1120522010 John Walk attempt: drop to 3.9T, same fueling

result: another good shot. Hit 3.9T, density ramp up to 2.0e20 before detachment/disruption at 1.4sec. Good cutoffs on core channels again, edge channels are still cutting off too early to get reliable calibration from them.

next: since we seem to be getting good density now (too much, even) we will drop the second NINJA puff, retaining the first NINJA and other fueling. We are now ready to come up in field to move the cutoffs radially outward and later, as well. Coming up to 4.1T.

May 22 2012 11:39:29:120AM 1120522011 John Walk attempt: cut second NINJA puff, up field to 4.1T to move cutoffs later.

result: fizzle.

May 22 2012 12:01:40:847PM 1120522012 John Walk attempt: 4.1T, without second NINJA puff.

result: another good shot, 4.1T with density ramp up to 1.8e20 before disrupting at 1.5sec. Core channels out to GPC chan6 look good for calibration.

next: up field to 4.2T to try to get outer channels. We will also be adding RF heating back in for the next shot - 1MW from 1sec, with the first half from D and the second half from E.

May 22 2012 12:07:49:213PM 1120522013 John Walk attempt: 4.2T, add ICRF back in.

result: fizzle.

May 22 2012 12:20:10:660PM 1120522014 John Walk attempt: repeat 013 - 4.2T, 1MW ICRF.

result: another fizzle.

May 22 2012 12:46:35:763PM 1120522015 John Walk attempt: 4.2T, 1MW ICRF

result: plasma to disruption at 1.5sec, density ramp to nl04 = 1.8e20. No RF, but still good cutoff signals out to GPC6. Usable for core and mid channels.

next: move gas puff back 200ms to delay density ramp (don't need as high a density as the core is now well-characterized for the calibration). Start ICRF at 0.5sec with 1MW until 1.5sec to try to get some heating before the density ramp cuts off the edge.

May 22 2012 12:49:44:623PM 1120522016 John Walk attempt: 4.2T, delayed density ramp, ICRF at 0.5sec.

result: fizzle.

May 22 2012 01:02:12:367PM 1120522017 John Walk attempt: repeat 016.

result: fizzle.

May 22 2012 01:15:25:380PM 1120522018 John Walk attempt: repeat 016.

result: fizzle.

May 22 2012 01:36:55:733PM 1120522019 John Walk attempt: 4.2T, 1MW ICRF 0.5-1.5sec

result: plasma to disruption, 1.55sec. Density ramp to 1.9e20. 1MW RF from D antenna 0.5-1.0sec, E antenna fault. Good signals on GPC out to channel 6, GPC2 looks pretty good too. Good shot for calibration.

This concludes the TS/ECE calibration run, I will now turn it over the ylin for RF conditioning run.

May 22 2012 02:11:52:303PM 1120522022 Yijun Lin fizzle

May 22 2012 02:25:44:377PM 1120522023 Yijun Lin no plasma. ACK failure prior to PULSE.

May 22 2012 02:53:14:797PM 1120522024 Yijun Lin good shot.
H/(H+D) rose to 11%.
next: repeat plasma. high power.

May 22 2012 02:56:06:823PM 1120522025 Yijun Lin good shot.
H/(H+D) ~ 13%, continue rising
next: repeat plasma. high power.

May 22 2012 03:07:49:610PM 1120522026 Yijun Lin no power shot. alternator problem.

May 22 2012 03:42:30:297PM 1120522027 Yijun Lin no power shot. alternator problem again. vibration.

May 22 2012 04:22:38:240PM 1120522028 Yijun Lin plasma.

next: repeat.

Physics Operator Comments

May 22 2012 08:36:10:963AM Bill Rowan Start with
MP296 "Confirmation of Thomson scattering density calibration using electron cyclotron emission cutoffs"
SL: Walk

Load shot 1120203036, Segments 01 and 02 are on
Load seg 01 from shot 1120518001

Gas test of B-main successfully completed

May 22 2012 09:13:43:323AM 1120522001 Bill Rowan 001
plasma, disruption at 1.4 s
BT=4.1 T
nl_04 ramp from 0.4 to 1.0e+20

Next shot.
nl_04 proportional gain change from to 2 to 6

May 22 2012 09:35:52:563AM 1120522002 Bill Rowan 002.
Fizzle.

Next shot
BT changed to 4.0T, 110000 to 107317
enable argon, pg1, 75 ms starting at 0.3 s

May 22 2012 09:58:37:730AM 1120522003 Bill Rowan 003.
Plasma
BT = 4 T
nl_04 = 1.0e+20

next shot
increase nl_04 proportional gain to 8
ICRF off for the next shot

May 22 2012 09:57:31:870AM 1120522004 Bill Rowan 004.
fizzle

Next shot.
enable argon, pg1, 75 ms starting at 0.3 s
"argon" pulse was entered into PG4 by mistake so no argon puff on 002 and 003

May 22 2012 10:18:38:150AM 1120522005 Bill Rowan 005.
plasma

Next shot.
Add feedback on PG5 (H-bottom)
Filled h-bot plenum to 40 psi
enabled h-bot

May 22 2012 10:29:20:660AM 1120522006 Bill Rowan 006.
fizzle

next shot.
Change IC_EF4 from -1290 to -1275

May 22 2012 10:48:06:950AM 1120522007 Bill Rowan 007.
plasma
nl_04 ramp from 1.0 to 2.0

Next shot.
Reduce BT to 3.9T, BT current to 104634

May 22 2012 10:52:28:407AM 1120522008 Bill Rowan 008.
fizzle

Next shot.
No PCS changes

May 22 2012 11:08:43:413AM 1120522009 Bill Rowan 009.
fizzle

Next shot.
Change IC_EF4 from -1275 to -1290

May 22 2012 11:23:28:497AM 1120522010 Bill Rowan 010.
plasma
BT = 3.9T

May 22 2012 11:30:42:937AM 1120522010 Bill Rowan 010.
plasma
BT = 3.9T

Next shot.
Reduce prefill by 2 ms. to 26 ms
Increase to 4.1 T (110000A)

May 22 2012 11:37:29:657AM 1120522011 Bill Rowan 011.
fizzle

Next shot
No PCS changes

May 22 2012 11:58:50:570AM 1120522012 Bill Rowan 012.
plasma

Next shot.
BT = 4.2 T (112682A)

May 22 2012 12:07:12:763PM 1120522013 Bill Rowan 013.
fizzle

May 22 2012 12:30:39:090PM 1120522014 Bill Rowan 014.
fizzle

Next shot.
Reduce prefill to 25 ms

May 22 2012 12:45:15:123PM 1120522015 Bill Rowan 015.
plasma
BT = 4.2 T

Next shot
Increase PG1 (Ar) to 100 ms
Move the start of the nl_04 ranp to 0.6

May 22 2012 12:56:45:580PM 1120522016 Bill Rowan 016.
fizzle

Next shot
No PCS changes

May 22 2012 01:03:36:950PM 1120522017 Bill Rowan 017.
fizzle

Next shot
No PCS changes

May 22 2012 01:27:13:670PM 1120522018 Bill Rowan 018
fizzle

Next shot.
Change IC_EF4 from -1290 to -1280
Add 1 ms of prefill, 26 ms to 27 ms

May 22 2012 01:40:45:750PM 1120522019 Bill Rowan 019.
plasma
delayed nl_04 ramp as requested

Next shot.
setup a locked mode: 1120517029
Loaded all segments
Loaded all segments
changed feedback to h-bottom on segment 4

May 22 2012 02:03:44:823PM 1120522020 Bill Rowan 020.
fizzle

Next shot,
Return to segment 01 from 1120522019

May 22 2012 02:04:00:737PM 1120522021 Bill Rowan 021
Plasma into ramp down

Next shot.
Start next MP

MP355 "ICRF conditioning"
SL: Lin

Load LSN target 1120510023
Load segment 01 from 1120522019

May 22 2012 02:22:41:393PM 1120522022 Bill Rowan 022.
Fizzle

Next shot
Change IC_EF4 from -1280 to -1270

May 22 2012 02:28:31:467PM 1120522023 Bill Rowan 023.
no shot: see engops

May 22 2012 02:45:06:833PM 1120522024 Bill Rowan 024.
plasma
Hard x-rays early?

Next shot
Added some gas to PG3

May 22 2012 02:55:23:443PM 1120522025 Bill Rowan 025.
plasma
Hard x-rays down

Next shot.
No pcs changes

May 22 2012 03:06:37:770PM 1120522026 Bill Rowan 026.
Alternator inhibit -- vibration fault
No power shot.

Next shot
No PCS changes

May 22 2012 03:42:48:577PM 1120522027 Bill Rowan 027.
Alternator inhibit -- vibration fault
No power shot

Next shot
No PCS changes

May 22 2012 04:22:54:963PM 1120522028 Bill Rowan 028.
Plasma

Next shot.
No PCS changes

May 22 2012 04:32:32:873PM 1120522029 Bill Rowan 029.
Plasma

Next shot.
No PCS changes

May 22 2012 04:45:57:457PM 1120522030 Bill Rowan 030.
Plasma

Next shot.
No PCS changes

May 22 2012 04:59:36:747PM 1120522031 Bill Rowan 031.
Plasma

Last shot.

Engineering Operator Comments

Shot Time Type Status Comment

1 09:01:32:437AM Plasma Ok

2 09:19:34:950AM Plasma Ok

3 09:36:46:420AM Plasma Ok

4 09:51:10:960AM Plasma Ok

5 10:04:35:760AM Plasma Ok

6 10:20:16:650AM Plasma Ok

7 10:33:49:143AM Plasma Ok

8 10:49:27:080AM Plasma Ok

9 11:03:04:143AM Plasma Ok

10 11:16:34:590AM Plasma Ok

11 11:31:29:913AM Plasma Ok

12 11:49:35:737AM Plasma Ok

13 12:04:18:350PM Plasma Ok

14 12:17:37:527PM Plasma Ok

15 12:31:15:520PM Plasma Ok

16 12:46:22:200PM Plasma Ok

17 12:59:32:190PM Plasma Ok

18 01:12:43:070PM Plasma Ok

19 01:25:50:650PM Plasma Ok

20 01:41:13:657PM Plasma Ok

21 01:54:24:803PM Plasma Ok

22 02:08:11:620PM Plasma Ok

23 02:21:42:283PM Plasma Bad Ack failure at pulse

24 02:35:14:850PM Plasma Ok

25 02:48:26:177PM Plasma Ok

26 03:01:49:353PM Plasma Bad Alternator vibration

27 03:39:41:083PM Plasma Bad Alt vibration

28 04:16:25:380PM Plasma Ok

29 04:29:38:047PM Plasma Ok

30 04:43:04:883PM Plasma Ok

31 04:56:44:113PM Plasma Ok

System Availability

May 22 2012 09:01:13:993AM

System Available Comment Availability
Changed Owner Description Who Can
Change
Active MHD no secured - tagged out Jun 2 2008 11:03:58:433AM (sears) Joe Snipes Active MHD Antenna golfit
BES yes BES system is online Nov 22 2011 02:21:12:050PM (bespam) Bill Rowan Beam Emission Spectroscopy bespam,liao,rowan
Bolometers yes Midplane diodes functioning properly. Midplane bolometers working and calibrated. DIV bolometers installed but not yet toaster calibrated Apr 20 2012 09:57:29:520AM (mlreinke) Matt Reinke Bolometers hutch,mlreinke
Boronization no Bottle has been disconnected from gas lines and plugged. It is being stored in the diborane cabinet. Feb 29 2012 07:47:39:617AM (dekow) Jim Irby Boronization dekow,irby
CECE no Jan 6 2012 03:48:47:060PM Anne White Correlation ECE whitea
CNPA yes Multiple channel CNPA available, no safety risk for in-vessel access Apr 14 2011 12:01:59:693PM (parker) Ron Parker Compact Neutral Analyzer parker
Cryopump - Upper Divertor no Off line. Helium dewar to be installed Monday 5/14/12 May 10 2012 08:45:54:900AM (labombard) Brian LaBombard Upper Divertor Cryopump dekow,irby,labombard
CXRS yes core-CXRS system is online Nov 22 2011 02:21:22:280PM (bespam) Bill Rowan Charge Exchange Spectroscopy bespam,blip,liao,rachmcd,rowan
CXRS edge yes Michael CHurchill has primary responsibility at the moment Apr 19 2011 11:44:46:247AM (blip) Bruce Lipshultz Measurement of CXR light in the pedestal region at both the high- and low-field sides blip,rmchurch
D Alpha yes \ha2_bright is available; \SPECTROSCOPY::TOP.VUV.VIS_SIGNALS:MCP_VIS_SIG1 is not available Jul 1 2009 09:45:41:090AM (terry) Jim Terry Balmer Alpha Monitor irby,terry,wolfe
Dalsa no system is is installed and aligned, but not functional (appears to be a broken cable) Dec 5 2011 02:41:42:867PM (marmar) Earl Marmar Visible Bremsstrahlung Imaging marmar
Disruption Mitigation yes two gas jet valves active as of Feb 2012 May 15 2012 10:09:23:597AM (granetz) Robert Granetz Gas Jet granetz,whyte
Divertor IR no Mar 6 2007 10:50:41:677AM Glen Wurden Divertor IR Digital Video gwurden,terry
Divertor IR Spectroscopy no Mar 6 2007 10:51:39:897AM Glen Wurden Divertor IR Spectroscopy gwurden,terry
DMBolo AXUV diodes yes Diodes are taking usable data. Not all post-processing code is working yet. Feb 1 2012 01:24:23:953PM (golynyk) Geoff Olynyk Set of six AXUV diodes in a toroidal array of midplane wall boxes. golynyk,granetz,mlreinke,whyte
DNB yes "The beam could break at any moment." May 15 2012 10:09:52:470AM (granetz) Robert Granetz Diagnostic Neutral Beam dterry,granetz,mochung
ECDC yes Apr 26 2012 03:23:19:057PM (dekow) Jim Irby 2.45 GHz, 3 kW, discharge cleaning system dekow,irby,pfeiffer
FRC-ECE yes FRC-ECE is online May 14 2012 11:53:01:693AM (bespam) Perry Phillips Heterodyne ECE-32 channels bespam,liao,phillips,rowan,whitea
FTCI yes System Operational May 14 2012 11:50:45:590AM (irby) Jim Irby Fast two-color interferometer irby
G-Side Ratiomatic yes Installed April 25,2012 May 1 2012 05:03:39:313PM (toland) Brian LaBombard G-side ratiomatic ionization gauge labombard,toland
Glow Discharge no HV cables disconnected and power supplies off. Electrical plugs have been disconnected, capped and red tagged. Mar 5 2012 10:21:53:460AM (dekow) Jim Irby 1 kV, 5 A, glow discharge system dekow,dterry,irby
GPC yes Operational Apr 27 2012 07:41:46:907AM (hubbard) Amanda Hubbard ECE Polychromater hubbard
GPC2 yes Operational Apr 27 2012 07:42:03:317AM (hubbard) Amanda Hubbard ECE Polychromater hubbard
GPI yes The Xpt-view, the midplane-view cameras are operational. The innerwall GPI (coupled to the fast-diodes) is available. Jul 1 2009 09:45:50:933AM (terry) Jim Terry Gas Puff Imaging terry,zweben
H/D yes system is functional and taking data Dec 5 2011 02:42:29:857PM (marmar) Earl Marmar H/D Ratio marmar
HEAT yes Apr 26 2012 03:23:49:607PM (dekow) Gary Dekow - Machine Heaters - burke,dekow
Hirex Jr yes Hirex-Jr has been installed Jun 28 2010 03:36:33:420PM (rice) John Rice High Resolution X-Ray ince,rice
Hirex Sr yes Installed and aligned. Will be available for Ti/Vr profiles after focusing tests and locked modes are taken. Dec 6 2011 08:21:02:453AM (ypodpaly) John Rice High Resolution X-Ray cgao,ldelgado,rice,ypodpaly
HXR yes 32 Channels operational,, no safety risk for in-vessel access Apr 14 2011 12:05:24:810PM (parker) Ron Parker Hard X-Ray Array faust,parker,schmidt
ICRF D-Antenna yes conditioning May 1 2012 10:31:59:277AM (wukitch) Steve Wukitch D-port antenna wukitch,ylin
ICRF E-Antenna yes conditioning May 1 2012 10:31:48:860AM (wukitch) Steve Wukitch E-port antenna wukitch,ylin
ICRF J-Antenna no secured Feb 29 2012 11:12:32:567AM (wukitch) Steve Wukitch J-port antenna wukitch,ylin
Impurity Spectroscopy yes Being upgraded with better optics and new spectrographs. Dan Miller has primary responsibility. Apr 19 2011 11:46:02:193AM (blip) Bruce Lipshultz Measurement of recycling light and impurity source rates at multiple surfaces around the tokamak blip,miller
Laser Blow-Off yes Pumped Down, Laser has not yet been tested but otherwise operational May 14 2012 04:31:17:037PM (nthoward) Martin Greenwald Impurity Injection System g,nthoward
Lower Hybrid no LH is now safe for manned entry into machine. Positioner locked and tagged off. Switches locked in dummy load position. Mar 2 2012 02:34:28:943PM (dterry) Ron Parker Lower Hybrid dterry,parker,wallaceg
Lower Hybrid Reflectometer no off Apr 15 2011 08:24:27:930AM (dominguez) Arturo Dominguez Lower Hybrid Reflectometer dominguez,marmar,parker,sgbaek
LoWEUS yes LoWEUS viewing the 10-30 nm region, spectral brightness vs. lambda and time are being stored in tree. Apr 20 2012 10:43:34:077AM (mlreinke) Matthew L. Reinke Long Wavelength Extreme Ultraviolet Spectrometer markchil,mlreinke
LPI no Beam line removed May 30 2008 02:09:12:833PM (bose) Earl Marmar Lithium Pellet Injector bose,marmar
Ly-alpha yes Midplane Lyman-a. New B-PORT Lyman (BPLY) still being debugged. Apr 20 2012 10:44:00:540AM (mlreinke) Matt Reinke Lyman alpha cameras faustian,labombard,mlreinke
Magnetics yes Dec 1 2011 11:51:51:970AM (g) Robert Granetz Bp coils and flux loops for equilibrium control granetz,wolfe
McPherson no McPherson viewing the 10-14 nm region for molybdenum monitoring. It's days are numbered as LoWEUS has demonstrated superiority. Apr 20 2012 10:44:10:937AM (mlreinke) Jim Terry VUV Spectrometer markchil,mlreinke,terry
Michelson yes Vacuum 3-4e-8 T. Starting with Michelson at reduced speed. Apr 27 2012 07:42:41:960AM (hubbard) Amanda Hubbard ECE Te Profiles hubbard,schmidt
MKS yes Dec 2 2011 12:27:47:163PM (toland) Brian LaBombard Baratron pressure gauges labombard,toland
MLP yes Operational. Connected to A-port probe system May 10 2012 08:40:19:910AM (labombard) Brian LaBombard Mirror Langmuir Probe Electronics System labombard
MSE yes 2/29/2012 MSE operational. No HV or vacuum safety issues Feb 29 2012 12:26:13:863PM (sscott) Steve Scott Motional Stark Effect jinseok,sscott
Neutrons yes Voltage is on for He3 detectors on J port. Remaining voltages will be turned on for the first run. Apr 23 2012 09:31:22:063AM (fiore) Catherine Fiore Neutron Detectors fiore
Neuts and Hards yes All detectors Powered On --- Waiting for neutrons for calibration Nov 22 2011 01:05:24:380PM (irby) Jim Irby X-Ray/Neutron Detectors at K-Hor irby
NINJA yes C-bottom and new F-bottom system ready. Dec 2 2011 12:28:44:843PM (toland) Brian LaBombard NINJA gas puff labombard,terry,toland
PCI yes Operational. May 1 2012 08:31:33:743AM (ntsujii) Miklos Porkolab Phase Contrast Imaging emd,ennever,ntsujii,porkolab
Penning Gauges yes HV power supplies turned ON in INIT, off in RECOOL May 10 2012 08:41:03:000AM (labombard) Brian LaBombard Penning Ionization Gauges labombard
Plasma TV yes WIDE1, WIDE2 (chan 33), DANT, JANT and DIV are operational. Jul 1 2009 09:46:29:543AM (terry) Jim Terry Video of plasma via several cameras dekow,irby,terry,wolfe
Polarimeter yes 3 chords operational but with high noise level Jan 6 2012 04:22:20:903PM (irby) Jim Irby C-Mod Polarimeter irby
Power - Alternator Air Switch yes Apr 26 2012 03:24:21:607PM (dekow) Gary Dekow Alternator to Power Room Power Supply Connection cochran,dekow,dterry,irby
Power - PEI yes Apr 26 2012 03:24:41:250PM (dekow) Gary Dekow PEI System cochran,dekow,dterry,irby
Power - TMX yes Apr 26 2012 03:24:57:153PM (dekow) Gary Dekow Ef2s,. EFCs and A-Coils byford,cochran,dekow,dterry,irby
Power Systems yes Apr 26 2012 03:25:14:497PM (dekow) Jim Irby C-Mod Magnet Supplies byford,cochran,dekow,dterry,irby
Probe Array - ISD yes Operational. Some dead probes. May 10 2012 08:41:58:120AM (labombard) Brian Labombard Inner Lower Divertor Probe Array labombard
Probe Array - LH yes Operational. 4 out of 6 probes working. May 10 2012 08:41:40:557AM (labombard) Brian LaBombard Lower Hybrid Probe Array labombard
Probe Array - OSD yes Operational. May 10 2012 08:42:13:733AM (labombard) Brian LaBombard Outer Lower Divertor Probe Array (F and J) labombard
Probe Array - UDIV yes Operational. Some dead probes. May 10 2012 08:42:32:663AM (labombard) Brian LaBombard Upper Divertor Probe Array labombard
Reflectometer yes As of 1120508, the 60, 75, 88s, 112, 140 and variable are connected and turned on. May 8 2012 10:33:21:567AM (dominguez) Earl Marmar Reflectometer dominguez,marmar
Scanning Probe - ASP yes Operational. A variety of probe heads are ready for use. May 10 2012 08:43:10:937AM (labombard) Brian LaBombard A-Port Scanning Probe labombard
Scanning Probe - FSP yes Operational. May 10 2012 08:43:24:887AM (labombard) Brian LaBombard F-Port Scanning Probe labombard
Scanning Probe - WASP no Not functioning. Probe tips are melted. Repair not performed during break. May 10 2012 08:44:43:137AM (labombard) Brian LaBombard Inner Wall Scanning Probe labombard,nsmick
Shoelace Antenna yes Operational May 10 2012 08:45:08:320AM (labombard) Brian LaBombard High-k active MHD antenna, for QCM, WCM studies golfit,labombard
SOL reflectometer yes c-port (top, middle, bottom) and h-port available. Only 1 of 4 locations can be used for each discharge May 1 2012 04:54:58:820PM (cornwall) Cornwall Lau SOL reflectometer cornwall,wukitch,ylin
Sparker yes Sparker Power Supply powered up. Connected at K port using red cable 4/23/12 9:25AM Apr 23 2012 12:06:10:983PM (parkin) Jim Irby Field Emission Preionization for C-Mod dekow,irby,parkin
Surface Science Station no SSS is up to air, no safety issues. Feb 27 2012 01:51:48:783PM (ochoukov) Bruce Lipschultz Radially scanning probe located on K-port blip,ochoukov
TCI yes TCI lasers in operation May 14 2012 11:51:18:700AM (irby) Jim Irby Two-Color Interferometer irby,murray
TS - Core yes Operating with one 50Hz laser, precise density calibration still required. May 9 2012 03:12:32:050PM (jwhughes) Jerry Hughes Core Thomson scattering jrwalk,jwhughes,yma
TS - Edge yes Operating with one 50Hz laser, precise density calibration still required. May 9 2012 03:12:51:363PM (jwhughes) Jerry Hughes Millimeter resolution edge Thomson scattering jrwalk,jwhughes,yma
Vispec no 350 and 670 nm, 4 spatial channels Nov 28 2007 09:58:35:493AM (agraf) Alex Graf Visible Spectrometer agraf
XEUS yes XEUS viewing the 1-6 nm region, spectral brightness vs. lambda and time are being stored in tree. Apr 20 2012 10:43:43:107AM (mlreinke) Matt Reinke X-ray Extended Ultraviolet Spectrometer markchil,mlreinke
XTOMO yes ARRAY1->5 available. Specific channels on various arrays display issues. Apr 20 2012 05:36:28:523PM (faustian) Robert Granetz X-Ray Tomography faustian,granetz,mlreinke

Session Leader Comments
May 22 2012 09:15:41:733AM	1120522001	John Walk	shot 001 -------- today we will be going for ECE density cutoffs to calibrate the Thomson Scattering system. We will be running low field (~4T) and ramping the density to move the cutoff point inwards. Subsequent shots will vary the field by small amounts to shift the cutoff radially, better optimizing for the TS data points. attempt: load 1120203036, 4T, 800kA density ramp with nl04 from 0.8e20, add 2MW ICRF from 1.0sec. result: disruption at 1.4sec, density ramp from 0.4-1.0e20. Don't seem to be hitting good cutoffs here though, radiative temperature drop instead. next: attempt to get the density higher, drop to 1MW ICRF switching halfway from D to E antenna.
May 22 2012 09:22:51:563AM	1120522002	John Walk	attempt: get density higher, drop to 1MW ICRF from single antenna. result: fizzle.
May 22 2012 09:49:50:390AM	1120522003	John Walk	attempt: drop field to 4.0T from 4.1 of shot 001 (this will shift the channel positions radially inwards, try to line up GPC innermost channel with magnetic axis). Same RF as shot 002 attempt. We will also be adding Ar at 0.3sec and NINJA at 0.9sec at the request of diagnostic operators. result: plasma into rampdown, density ramp from 0.6-0.9e20 until 1sec, then flatlines. Right on 4.0T, but still no ECE cutoffs. It appears the ICRF may be getting us some density pumpout. next: drop the RF, go Ohmic-only for the next shot.
May 22 2012 09:55:35:983AM	1120522004	John Walk	attempt: drop RF, still trying to get density higher, still at 4.0T. result: fizzle.
May 22 2012 10:17:40:333AM	1120522005	John Walk	attempt: no ICRF again, same field. We will go for NINJA assist for the density. result: plasma to rampdown, still not enough density. NINJA puff at 1.2 pushes us above 1e20, but we still have a drop in nl04 after 0.9sec. No sign of cutoffs. next: enable H-bottom (PG5) for additional fueling.
May 22 2012 10:23:20:333AM	1120522006	John Walk	attempt: enable H-bot for additional fueling, same field and current. result: fizzle.
May 22 2012 10:49:11:900AM	1120522007	John Walk	attempt: repeat 006 with H-bottom fueling. result: success! density ramp up to 2e20 before a detachment/disruption at 1.5sec, cutoffs look good on several inner GPC channels. Low signal on GPC2, but GPC should be enough. next: drop field to 3.9T at same fueling to try to shift the radial position of the cutoffs.
May 22 2012 10:53:01:827AM	1120522008	John Walk	attempt: same fueling, lower field to 3.9T to shift cutoff radial positions. result: fizzle.
May 22 2012 11:05:47:213AM	1120522009	John Walk	attempt: repeat 008. result: fizzle.
May 22 2012 11:32:59:120AM	1120522010	John Walk	attempt: drop to 3.9T, same fueling result: another good shot. Hit 3.9T, density ramp up to 2.0e20 before detachment/disruption at 1.4sec. Good cutoffs on core channels again, edge channels are still cutting off too early to get reliable calibration from them. next: since we seem to be getting good density now (too much, even) we will drop the second NINJA puff, retaining the first NINJA and other fueling. We are now ready to come up in field to move the cutoffs radially outward and later, as well. Coming up to 4.1T.
May 22 2012 11:39:29:120AM	1120522011	John Walk	attempt: cut second NINJA puff, up field to 4.1T to move cutoffs later. result: fizzle.
May 22 2012 12:01:40:847PM	1120522012	John Walk	attempt: 4.1T, without second NINJA puff. result: another good shot, 4.1T with density ramp up to 1.8e20 before disrupting at 1.5sec. Core channels out to GPC chan6 look good for calibration. next: up field to 4.2T to try to get outer channels. We will also be adding RF heating back in for the next shot - 1MW from 1sec, with the first half from D and the second half from E.
May 22 2012 12:07:49:213PM	1120522013	John Walk	attempt: 4.2T, add ICRF back in. result: fizzle.
May 22 2012 12:20:10:660PM	1120522014	John Walk	attempt: repeat 013 - 4.2T, 1MW ICRF. result: another fizzle.
May 22 2012 12:46:35:763PM	1120522015	John Walk	attempt: 4.2T, 1MW ICRF result: plasma to disruption at 1.5sec, density ramp to nl04 = 1.8e20. No RF, but still good cutoff signals out to GPC6. Usable for core and mid channels. next: move gas puff back 200ms to delay density ramp (don't need as high a density as the core is now well-characterized for the calibration). Start ICRF at 0.5sec with 1MW until 1.5sec to try to get some heating before the density ramp cuts off the edge.
May 22 2012 12:49:44:623PM	1120522016	John Walk	attempt: 4.2T, delayed density ramp, ICRF at 0.5sec. result: fizzle.
May 22 2012 01:02:12:367PM	1120522017	John Walk	attempt: repeat 016. result: fizzle.
May 22 2012 01:15:25:380PM	1120522018	John Walk	attempt: repeat 016. result: fizzle.
May 22 2012 01:36:55:733PM	1120522019	John Walk	attempt: 4.2T, 1MW ICRF 0.5-1.5sec result: plasma to disruption, 1.55sec. Density ramp to 1.9e20. 1MW RF from D antenna 0.5-1.0sec, E antenna fault. Good signals on GPC out to channel 6, GPC2 looks pretty good too. Good shot for calibration. This concludes the TS/ECE calibration run, I will now turn it over the ylin for RF conditioning run.
May 22 2012 02:11:52:303PM	1120522022	Yijun Lin	fizzle
May 22 2012 02:25:44:377PM	1120522023	Yijun Lin	no plasma. ACK failure prior to PULSE.
May 22 2012 02:53:14:797PM	1120522024	Yijun Lin	good shot. H/(H+D) rose to 11%. next: repeat plasma. high power.
May 22 2012 02:56:06:823PM	1120522025	Yijun Lin	good shot. H/(H+D) ~ 13%, continue rising next: repeat plasma. high power.
May 22 2012 03:07:49:610PM	1120522026	Yijun Lin	no power shot. alternator problem.
May 22 2012 03:42:30:297PM	1120522027	Yijun Lin	no power shot. alternator problem again. vibration.
May 22 2012 04:22:38:240PM	1120522028	Yijun Lin	plasma. next: repeat.

Physics Operator Comments
May 22 2012 08:36:10:963AM		Bill Rowan	Start with MP296 "Confirmation of Thomson scattering density calibration using electron cyclotron emission cutoffs" SL: Walk Load shot 1120203036, Segments 01 and 02 are on Load seg 01 from shot 1120518001 Gas test of B-main successfully completed
May 22 2012 09:13:43:323AM	1120522001	Bill Rowan	001 plasma, disruption at 1.4 s BT=4.1 T nl_04 ramp from 0.4 to 1.0e+20 Next shot. nl_04 proportional gain change from to 2 to 6
May 22 2012 09:35:52:563AM	1120522002	Bill Rowan	002. Fizzle. Next shot BT changed to 4.0T, 110000 to 107317 enable argon, pg1, 75 ms starting at 0.3 s
May 22 2012 09:58:37:730AM	1120522003	Bill Rowan	003. Plasma BT = 4 T nl_04 = 1.0e+20 next shot increase nl_04 proportional gain to 8 ICRF off for the next shot
May 22 2012 09:57:31:870AM	1120522004	Bill Rowan	004. fizzle Next shot. enable argon, pg1, 75 ms starting at 0.3 s "argon" pulse was entered into PG4 by mistake so no argon puff on 002 and 003
May 22 2012 10:18:38:150AM	1120522005	Bill Rowan	005. plasma Next shot. Add feedback on PG5 (H-bottom) Filled h-bot plenum to 40 psi enabled h-bot
May 22 2012 10:29:20:660AM	1120522006	Bill Rowan	006. fizzle next shot. Change IC_EF4 from -1290 to -1275
May 22 2012 10:48:06:950AM	1120522007	Bill Rowan	007. plasma nl_04 ramp from 1.0 to 2.0 Next shot. Reduce BT to 3.9T, BT current to 104634
May 22 2012 10:52:28:407AM	1120522008	Bill Rowan	008. fizzle Next shot. No PCS changes
May 22 2012 11:08:43:413AM	1120522009	Bill Rowan	009. fizzle Next shot. Change IC_EF4 from -1275 to -1290
May 22 2012 11:23:28:497AM	1120522010	Bill Rowan	010. plasma BT = 3.9T
May 22 2012 11:30:42:937AM	1120522010	Bill Rowan	010. plasma BT = 3.9T Next shot. Reduce prefill by 2 ms. to 26 ms Increase to 4.1 T (110000A)
May 22 2012 11:37:29:657AM	1120522011	Bill Rowan	011. fizzle Next shot No PCS changes
May 22 2012 11:58:50:570AM	1120522012	Bill Rowan	012. plasma Next shot. BT = 4.2 T (112682A)
May 22 2012 12:07:12:763PM	1120522013	Bill Rowan	013. fizzle
May 22 2012 12:30:39:090PM	1120522014	Bill Rowan	014. fizzle Next shot. Reduce prefill to 25 ms
May 22 2012 12:45:15:123PM	1120522015	Bill Rowan	015. plasma BT = 4.2 T Next shot Increase PG1 (Ar) to 100 ms Move the start of the nl_04 ranp to 0.6
May 22 2012 12:56:45:580PM	1120522016	Bill Rowan	016. fizzle Next shot No PCS changes
May 22 2012 01:03:36:950PM	1120522017	Bill Rowan	017. fizzle Next shot No PCS changes
May 22 2012 01:27:13:670PM	1120522018	Bill Rowan	018 fizzle Next shot. Change IC_EF4 from -1290 to -1280 Add 1 ms of prefill, 26 ms to 27 ms
May 22 2012 01:40:45:750PM	1120522019	Bill Rowan	019. plasma delayed nl_04 ramp as requested Next shot. setup a locked mode: 1120517029 Loaded all segments Loaded all segments changed feedback to h-bottom on segment 4
May 22 2012 02:03:44:823PM	1120522020	Bill Rowan	020. fizzle Next shot, Return to segment 01 from 1120522019
May 22 2012 02:04:00:737PM	1120522021	Bill Rowan	021 Plasma into ramp down Next shot. Start next MP MP355 "ICRF conditioning" SL: Lin Load LSN target 1120510023 Load segment 01 from 1120522019
May 22 2012 02:22:41:393PM	1120522022	Bill Rowan	022. Fizzle Next shot Change IC_EF4 from -1280 to -1270
May 22 2012 02:28:31:467PM	1120522023	Bill Rowan	023. no shot: see engops
May 22 2012 02:45:06:833PM	1120522024	Bill Rowan	024. plasma Hard x-rays early? Next shot Added some gas to PG3
May 22 2012 02:55:23:443PM	1120522025	Bill Rowan	025. plasma Hard x-rays down Next shot. No pcs changes
May 22 2012 03:06:37:770PM	1120522026	Bill Rowan	026. Alternator inhibit -- vibration fault No power shot. Next shot No PCS changes
May 22 2012 03:42:48:577PM	1120522027	Bill Rowan	027. Alternator inhibit -- vibration fault No power shot Next shot No PCS changes
May 22 2012 04:22:54:963PM	1120522028	Bill Rowan	028. Plasma Next shot. No PCS changes
May 22 2012 04:32:32:873PM	1120522029	Bill Rowan	029. Plasma Next shot. No PCS changes
May 22 2012 04:45:57:457PM	1120522030	Bill Rowan	030. Plasma Next shot. No PCS changes
May 22 2012 04:59:36:747PM	1120522031	Bill Rowan	031. Plasma Last shot.

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	09:01:32:437AM	Plasma	Ok
2	09:19:34:950AM	Plasma	Ok
3	09:36:46:420AM	Plasma	Ok
4	09:51:10:960AM	Plasma	Ok
5	10:04:35:760AM	Plasma	Ok
6	10:20:16:650AM	Plasma	Ok
7	10:33:49:143AM	Plasma	Ok
8	10:49:27:080AM	Plasma	Ok
9	11:03:04:143AM	Plasma	Ok
10	11:16:34:590AM	Plasma	Ok
11	11:31:29:913AM	Plasma	Ok
12	11:49:35:737AM	Plasma	Ok
13	12:04:18:350PM	Plasma	Ok
14	12:17:37:527PM	Plasma	Ok
15	12:31:15:520PM	Plasma	Ok
16	12:46:22:200PM	Plasma	Ok
17	12:59:32:190PM	Plasma	Ok
18	01:12:43:070PM	Plasma	Ok
19	01:25:50:650PM	Plasma	Ok
20	01:41:13:657PM	Plasma	Ok
21	01:54:24:803PM	Plasma	Ok
22	02:08:11:620PM	Plasma	Ok
23	02:21:42:283PM	Plasma	Bad	Ack failure at pulse
24	02:35:14:850PM	Plasma	Ok
25	02:48:26:177PM	Plasma	Ok
26	03:01:49:353PM	Plasma	Bad	Alternator vibration
27	03:39:41:083PM	Plasma	Bad	Alt vibration
28	04:16:25:380PM	Plasma	Ok
29	04:29:38:047PM	Plasma	Ok
30	04:43:04:883PM	Plasma	Ok
31	04:56:44:113PM	Plasma	Ok