Alcator C-Mod Run 1120613 Information

Miniproposals

Operators
Session leader(s):
Physics operator(s):	Greg Wallace
Engineering operator(s):	Roza Tesfaye,Thomas Toland,Gary Dekow

Engineering Operator Run Comment
PO-plan: MP681 Evaluate Field-Aligned Antenna

Session Leader Plans

Entered: Jun 13 2012 09:04:21:283AM

Author: Steve Wukitch

MP681: Evaluate Field-Aligned Antenna
Characterize FA-J antenna performance pre-boronization

1) LSN staircase RF power in L-mode Bt = 5.2 T, Ip = 0.8 MA, nl04 = 0.7e20 /m^2
can use 1120531030 (but will need higher density to be programmed)
phase scan - dipole, monopole, p/6
GPI - He puff
edge gas puff
8 shots
2) attempt low current H-modes
Bt = 5.2 T, Ip = 0.6 MA, nl04 = 0.7e20 /m^2
power ramps to identify threshold
constant power once H-mode is accessed
10 shots
3) LSN staircase RF power in L-mode Bt = 5.2 T, Ip = 1 MA, nl04 = 0.7e20 /m^2
GPI - He puff
edge gas puff
8 shots
4) LSN staircase RF power in L-mode Bt = 5.2 T, Ip = 0.8 MA, nl04 = 0.7e20 /m^2
Neon seeded - 6 shots
GPI - He puff
5) repeat 4 with USN - 1120531025

Physics Operators Plans

Entered: Jun 12 2012 01:44:35:143PM

Author: Greg Wallace

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Engineering Setup
-----------------
PO-plan: MP681 Evaluate Field-Aligned Antenna

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

Power systems as on: 1120531034

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
fill H-bottom with 4 psi He4 Hybrid DISABLED (PG5)

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 (for piggy back test for FICX)

Vessel temperature: 35/35/35

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

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Session Leader Plan
------------------------------

MP681: Evaluate Field-Aligned Antenna
Characterize FA-J antenna performance pre-boronization

1) LSN staircase RF power in L-mode Bt = 5.2 T, Ip = 0.8 MA, nl04 = 0.7e20
/m^2
can use 1120531030 (but will need higher density to be programmed)
GPI - He puff
edge gas puff
8 shots
2) attempt low current H-modes
Bt = 5.2 T, Ip = 0.6 MA, nl04 = 0.7e20 /m^2
power ramps to identify threshold
constant power once H-mode is accessed
10 shots
3) LSN staircase RF power in L-mode Bt = 5.2 T, Ip = 1 MA, nl04 = 0.7e20 /m^2
GPI - He puff
edge gas puff
8 shots
4) LSN staircase RF power in L-mode Bt = 5.2 T, Ip = 0.8 MA, nl04 = 0.7e20
/m^2
Neon seeded - 6 shots
GPI - He puff
5) repeat 4 with USN - 1120531025

Entered: Jun 13 2012 04:21:56:963PM

Author: Yijun Lin

early disruption. Very short RF period.

Session Leader Summaries

Entered: Jun 13 2012 05:12:17:133PM

Author: Steve Wukitch

We had a productive run comparing D/E and FA-J into L-mode discharges.
We completed a current scan [0.6, 0.8, 1 MA] and a density scan at 0.6
MA. We also had two discharges at ~monopole phase (009&011) that
resulted in strong interactions at the plasma limiter and little
heating. We attempted some high power USN discharges attempting to
obtain I-mode but we spoiled our luck with excessive Ne in discharge
#031.

Physics Operator Summaries

Entered: Jun 13 2012 05:12:21:480PM

Author: Greg Wallace

Physop summary for 1120613

A rather uninteresting day from the physop perspective. Mostly the same shot over and over. A few fizzles in the morning were corrected by adjusting the RCUR offset from 3000 to 3400 and IC_EF4U was made more negative by 10 A.

After switching to upper null in the afternoon we tried to do Ne puffing. A large Ne puff caused a disruption at 1.1 MA on shot 31. Shots 32-34 were fizzles following the disruption.

The disruption seems to have faulted the DNB enable, which prevented Bob from firing into the empty chamber on the subsequent fizzles.

Boronization overnight following this run.

Session Leader Comments

Jun 13 2012 09:04:57:207AM 1120613001 Steve Wukitch 001 plasma - disruption ~0.5 s

Jun 13 2012 09:27:59:690AM 1120613002 Steve Wukitch 002 request: Bt = 5.2 T, Ip = 0.8 MA, nl04 = 0.7e20 /m^2, LSN
D/E : [1.20, 1.5] sec, staircase to 2.4 MW
FA-J : [0.70, 1.1] sec, staircase to 2.4 MW

Result: plasma - good comparison
H/H+D~8% - H-modes in D/E
next: reverse antenna order

Jun 13 2012 09:40:37:990AM 1120613003 Steve Wukitch 003 request: Bt = 5.2 T, Ip = 0.8 MA, nl04 = 0.7e20 /m^2, LSN
D/E : [0.70, 1.1] sec, staircase to 2.4 MW
FA-J : [1.20, 1.5] sec, staircase to 2.4 MW

Result: plasma - good comparison
H/H+D~8% - H-modes in D/E
next: enable GPI, C-side gas puff

Jun 13 2012 09:56:11:187AM 1120613004 Steve Wukitch 004 request: Bt = 5.2 T, Ip = 0.8 MA, nl04 = 0.7e20 /m^2, LSN
D/E : [0.70, 1.1] sec, staircase to 2.4 MW
FA-J : [1.20, 1.5] sec, staircase to 2.4 MW

Result: plasma - good comparison
NINJA causes density to increase too much at 1.1 s
next: GPI needs to tweak settings
delay NINJA to 1.2 s
repeat

Jun 13 2012 10:07:16:440AM 1120613005 Steve Wukitch 005 request: Bt = 5.2 T, Ip = 0.8 MA, nl04 = 0.7e20 /m^2, LSN
D/E : [0.70, 1.1] sec, staircase to 2.4 MW
FA-J : [1.20, 1.5] sec, staircase to 2.4 MW

Result: plasma - good comparison
NINJA - density still climbing but not some
next: switch antenna order
Change chromex central wavelength to 550 nm

Jun 13 2012 10:13:27:000AM 1120613006 Steve Wukitch 006 fizzle

Jun 13 2012 10:37:09:637AM 1120613007 Steve Wukitch 007 request: Bt = 5.2 T, Ip = 0.8 MA, nl04 = 0.7e20 /m^2, LSN
D/E : [1.20, 1.5] sec, staircase to 2.4 MW
FA-J : [0.70, 1.1] sec, staircase to 2.4 MW

Result: plasma - good comparison- density climbing from GPI
NINJA - density still climbing
next: repeat

Jun 13 2012 10:45:22:587AM 1120613008 Steve Wukitch 008 request: Bt = 5.2 T, Ip = 0.8 MA, nl04 = 0.7e20 /m^2, LSN
D/E : [1.20, 1.5] sec, staircase to 2.4 MW
FA-J : [0.70, 1.1] sec, staircase to 2.4 MW

Result: plasma - good comparison

next: monopole

Jun 13 2012 10:53:43:877AM 1120613009 Steve Wukitch 009 request: Bt = 5.2 T, Ip = 0.8 MA, nl04 = 0.7e20 /m^2, LSN
D/E : [1.20, 1.5] sec, staircase to 2.4 MW
FA-J : [0.70, 1.1] sec, staircase to 2.4 MW - 15deg

Result: plasma - good data

next: try for monopole

Jun 13 2012 11:05:50:503AM 1120613010 Steve Wukitch 010 no power - ack failure

Jun 13 2012 11:29:54:810AM 1120613011 Steve Wukitch 011 request: Bt = 5.2 T, Ip = 0.8 MA, nl04 = 0.7e20 /m^2, LSN
D/E : [1.20, 1.5] sec, staircase to 2.4 MW
FA-J : [0.70, 1.1] sec, staircase to 2.4 MW -

Result: plasma - good data

next: GPI off, back to dipole - repeat

Jun 13 2012 11:43:56:913AM 1120613012 Steve Wukitch 012 request: Bt = 5.2 T, Ip = 0.8 MA, nl04 = 0.7e20 /m^2, LSN
D/E : [1.20, 1.5] sec, staircase to 2.4 MW
FA-J : [0.70, 1.1] sec, staircase to 2.4 MW -

Result: plasma - good data
Ar was still on

next: swap RF order - repeat

Jun 13 2012 11:59:23:680AM 1120613013 Steve Wukitch 013 fizzle

Jun 13 2012 12:20:37:847PM 1120613014 Steve Wukitch 014 request: Bt = 5.2 T, Ip = 0.8 MA, nl04 = 0.7e20 /m^2, LSN
D/E : [1.20, 1.5] sec, staircase to 2.4 MW
FA-J : [0.70, 1.1] sec, staircase to 2.4 MW -

Result: plasma - good data
H/H+D 10-14%
next: Ip = 0.6 MA

Jun 13 2012 12:16:29:237PM 1120613015 Steve Wukitch 015 fizzle

Jun 13 2012 12:38:23:533PM 1120613016 Steve Wukitch 016 request: Bt = 5.2 T, Ip = 0.6 MA, nl04 = 0.7e20 /m^2, LSN
D/E : [1.20, 1.5] sec, staircase to 2.4 MW
FA-J : [0.70, 1.1] sec, staircase to 2.4 MW

Result: plasma - good data
H/H+D ~12%
next: swap order & repeat

Jun 13 2012 01:06:27:900PM 1120613017 Steve Wukitch 017 request: Bt = 5.2 T, Ip = 0.6 MA, nl04 = 0.7e20 /m^2, LSN
D/E : [1.20, 1.5] sec, staircase to 2.4 MW
FA-J : [0.70, 1.1] sec, staircase to 2.4 MW

Result: plasma - good data
H/H+D ~12%
next: raise density

Jun 13 2012 01:05:55:483PM 1120613018 Steve Wukitch 018 request: Bt = 5.2 T, Ip = 0.6 MA, nl04 = 0.8e20 /m^2, LSN
D/E : [1.20, 1.5] sec, staircase to 2.4 MW
FA-J : [0.70, 1.1] sec, staircase to 2.4 MW

Result: plasma - good data
H/H+D ~12%
brief H-mode late
next: swap RF order

Jun 13 2012 01:20:18:837PM 1120613019 Steve Wukitch 019 request: Bt = 5.2 T, Ip = 0.6 MA, nl04 = 0.8e20 /m^2, LSN
D/E : [1.20, 1.5] sec, staircase to 2.4 MW
FA-J : [0.70, 1.1] sec, staircase to 2.4 MW

Result: plasma - good data
H/H+D ~10%
brief H-mode late
next: GPI on, raise density

Jun 13 2012 01:47:30:710PM 1120613020 Steve Wukitch 020 request: Bt = 5.2 T, Ip = 0.6 MA, nl04 = 0.95e20 /m^2, LSN
D/E : [1.10, 1.5] sec, staircase to 2.4 MW
FA-J : [0.60, 1.] sec, staircase to 2.4 MW

Result: plasma - good data
H/H+D ~10%
next: swap RF antenna order

Jun 13 2012 01:47:40:820PM 1120613021 Steve Wukitch 021 request: Bt = 5.2 T, Ip = 0.6 MA, nl04 = 0.95e20 /m^2, LSN
D/E : [0.6, 1.0] sec, staircase to 2.4 MW
FA-J : [1.20, 1.5] sec, staircase to 2.4 MW

Result: plasma - good data
H/H+D ~10%
next: nl04~0.8, Ip~1 MA

Jun 13 2012 02:07:26:247PM 1120613022 Steve Wukitch 022 request: Bt = 5.2 T, Ip = 1 MA, nl04 = 0.8e20 /m^2, LSN
D/E : [1.20, 1.5] sec, staircase to 2.4 MW
FA-J : [0.6, 1.0] sec, staircase to 2.4 MW

Result: plasma - H-modes late - RF is faulting
H/H+D ~9%
next: repeat

Jun 13 2012 02:17:04:083PM 1120613023 Steve Wukitch 023 request: Bt = 5.2 T, Ip = 1 MA, nl04 = 0.8e20 /m^2, LSN
D/E : [1.1, 1.5] sec, staircase to 2.4 MW
FA-J : [0.6, 1.] sec, staircase to 2.4 MW

Result: plasma - H-modes late - reasonable data
H/H+D ~10%
next: swap RF antenna order

Jun 13 2012 02:35:22:887PM 1120613024 Steve Wukitch 024 request: Bt = 5.2 T, Ip = 1 MA, nl04 = 0.8e20 /m^2, LSN
D/E : [0.6, 1.] sec, staircase to 2.4 MW
FA-J : [1.1, 1.5] sec, staircase to 2.4 MW

Result: plasma - H-modes late - reasonable data
H/H+D ~10%
next: GPI off, Chromex to 550 nm central wavelength

Jun 13 2012 02:53:05:250PM 1120613025 Steve Wukitch 025 request: Bt = 5.2 T, Ip = 1 MA, nl04 = 0.8e20 /m^2, LSN
D/E : [0.6, 1.] sec, staircase to 2.4 MW
FA-J : [1.1, 1.5] sec, staircase to 2.4 MW

Result: plasma - reasonable data
H/H+D ~12%
next: swap RF antenna order

Jun 13 2012 03:12:37:350PM 1120613026 Steve Wukitch 026 request: Bt = 5.2 T, Ip = 1 MA, nl04 = 0.8e20 /m^2, LSN
D/E : [1.1, 1.5] sec, staircase to 2.4 MW
FA-J : [0.6, 1.] sec, staircase to 2.4 MW

Result: plasma - H-modes late - reasonable data
H/H+D ~10%
next: USN from 1120531025 with 1.1 MA stacking antenna power

Jun 13 2012 03:32:24:743PM 1120613027 Steve Wukitch 027 request: Bt = 5.2 T, Ip = 1.1 MA, nl04 = 0.8e20 /m^2, USN
D/E : [1., 1.5] sec, 2.4 MW
FA-J : [0.6, 1.5] sec, staircase to 2.4 MW

Result: plasma - I mode maybe

next: repeat

Jun 13 2012 03:37:35:937PM 1120613028 Steve Wukitch 028 request: Bt = 5.2 T, Ip = 1.1 MA, nl04 = 0.8e20 /m^2, USN
D/E : [1., 1.5] sec, 2.4 MW
FA-J : [0.6, 1.5] sec, staircase to 2.4 MW

Result: plasma - lost E antenna early; FA-J was improved

next: repeat

Jun 13 2012 04:08:55:660PM 1120613029 Steve Wukitch 029 request: Bt = 5.2 T, Ip = 1.1 MA, nl04 = 0.8e20 /m^2, USN
D/E : [1., 1.5] sec, 2.4 MW
FA-J : [0.6, 1.5] sec, staircase to 2.4 MW

Result: plasma

next: repeat with Ne (3 psi, H-bottom, 0.5-0.6)

Jun 13 2012 04:08:46:490PM 1120613030 Steve Wukitch 030 request: Bt = 5.2 T, Ip = 1.1 MA, nl04 = 0.8e20 /m^2, USN
D/E : [1., 1.5] sec, 2.4 MW
FA-J : [0.6, 1.5] sec, staircase to 2.4 MW

Result: plasma - short Neon pulse not as long as intended

next: repeat with Ne longer pulse - 0.4-0.55 s

Jun 13 2012 04:26:59:350PM 1120613031 Steve Wukitch 031 request: Bt = 5.2 T, Ip = 1.1 MA, nl04 = 0.8e20 /m^2, USN
D/E : [1., 1.5] sec, 2.4 MW
FA-J : [0.6, 1.5] sec, staircase to 2.4 MW

Result: plasma too much Neon (0.4-0.55 at 100 V)

next: repeat with Ne (3 psi, H-bottom, 0.4-0.55 at 60 V)

Jun 13 2012 04:34:03:093PM 1120613032 Steve Wukitch 032 post disruption fizzle

Jun 13 2012 05:12:02:427PM 1120613033 Steve Wukitch 033 fizzle

Jun 13 2012 05:11:54:473PM 1120613034 Steve Wukitch 034 fizzle

Physics Operator Comments

Jun 13 2012 09:09:52:110AM 1120613001 Greg Wallace Changes: Load seg 1 from 1120512029 and seg 2 from 1120531034.

Result: Disruption at 0.53 s. Locked mode? Low density, high current.

Next shot: Increase nl_04 demand to 0.7e20 in flattop.

Jun 13 2012 09:25:40:110AM 1120613002 Greg Wallace Changes: Increase nl_04 demand to 0.7e20 in flattop.

Result: Plasma through rampdown. Startup doesn't look too great---slow current ramp after 0.015 s. Lots of CIII starting at 0.009 s.

Next shot: Repeat. See if startup cleans up.

Jun 13 2012 09:36:15:860AM 1120613003 Greg Wallace Changes: Repeat. See if startup cleans up.

Result: Startup looks a little better. Plasma through rampdown.

Next shot: Repeat with GPI puff.

Jun 13 2012 09:53:34:027AM 1120613004 Greg Wallace Changes: Repeat with GPI puff.

Result: Plasma through rampdown. Startup looks good.

Next shot: Repeat with different GPI puff.

Jun 13 2012 10:10:27:660AM 1120613005 Greg Wallace Changes: Repeat with different GPI puff.

Result: Plasma through rampdown. Early current ramp is slowing down again...

Next shot: Repeat.

Jun 13 2012 10:19:24:450AM 1120613006 Greg Wallace Changes: Repeat.

Result: Fizzle. A little bounce at 0.01 s? Fields and position look OK. CIII spike at same time as the bounce.

Next shot: Repeat and hope it goes through.

Jun 13 2012 10:33:27:770AM 1120613007 Greg Wallace Changes: Repeat and hope it goes through.

Result: Plasma through rampdown. Still a little current hesitation at 0.012 s.

Next shot: Repeat.

Jun 13 2012 10:46:08:727AM 1120613008 Greg Wallace Changes: Repeat.

Result: Plasma through rampdown. Again, a little Ip hesitation around 12 ms.

Next shot: Enable 60 ms Ar puff from PG1 (B-side lower).

Jun 13 2012 11:05:13:233AM 1120613009 Greg Wallace Changes: Enable 60 ms Ar puff from PG1 (B-side lower).

Result: Plasma through rampdown.

Next shot: Repeat.

Jun 13 2012 11:05:42:510AM 1120613010 Greg Wallace Changes: Repeat

Result: ACK failure. No power shot.

Next shot: Repeat.

Jun 13 2012 11:22:39:507AM 1120613011 Greg Wallace Changes: Repeat

Result: Plasma through rampdown. Slight bounce at 0.01 s. Will keep an eye on it.

Next shot: Repeat.

Jun 13 2012 11:43:28:843AM 1120613012 Greg Wallace Changes: Repeat.

Result: Plasma through rampdown. Still a little bounce at 0.01 s.

Next shot: Repeat.

Jun 13 2012 11:56:46:850AM 1120613013 Greg Wallace Changes: Repeat.

Result: Fizzle. Bounce at 12 ms causes big spike in CIII. Bz0 is a little high compared to shot 4. Rcur is also a little low compared to shot 4. Pressure looks good.

Next shot: Make IC_EF4U more negative by 10 A to reduce early Bz0 (-1050 A to -1060 A). Cross fingers.

Jun 13 2012 12:12:00:690PM 1120613014 Greg Wallace Changes: Make IC_EF4U more negative by 10 A to reduce early Bz0 (-1050 A to -1060 A). Cross fingers.

Result: Plasma through rampdown. Missing magnetics and efit data? Josh & Tom fixed the problem and recovered the data.

Next shot: Decrease Ip to 600 kA in flattop. Disable B-side lower (Ar) puff.

Jun 13 2012 12:27:31:597PM 1120613015 Greg Wallace Changes: Decrease Ip to 600 kA in flattop.

Result: Fizzle. Seems to be doing well until 0.015 s, then CIII jumps up and plasma bounces. Looks like the -10 A addition to IC_EF4U for shot 14 was in seg 2 not seg 1.

Next shot: Add -10 A to IC_EF4U in seg 1 this time. (-1280 to -1290 A)

Jun 13 2012 12:38:38:543PM 1120613016 Greg Wallace Changes: Add -10 A to IC_EF4U in seg 1 this time. (-1280 to -1290 A)

Result: Plasma through rampdown. Bz0 is still a tiny bit higher than on shot 4.

Next shot: Decrease IC_EF4U by 10 A again. (-1290 to -1300 A)

Jun 13 2012 12:50:14:703PM 1120613017 Greg Wallace Changes: Decrease IC_EF4U by 10 A again. (-1290 to -1300 A)

Result: Plasma through rampdown. Startup looks nice.

Next shot: Increase nl_04 demand from 7e19 to 8e19 in seg 2.

Jun 13 2012 01:07:51:180PM 1120613018 Greg Wallace Changes: Increase nl_04 demand from 7e19 to 8e19 in seg 2.

Result: Plasma through rampdown.

Next shot: Repeat.

Jun 13 2012 01:18:41:780PM 1120613019 Greg Wallace Changes: Repeat.

Result: Plasma through rampdown.

Next shot: Increase nl_04 demand from 8e19 to 9.5e19.

Jun 13 2012 01:34:49:110PM 1120613020 Greg Wallace Changes: Increase nl_04 demand from 8e19 to 9.5e19.

Result: Plasma through rampdown. A little hesitation in the current ramp at 0.015 s. Fields and pressure look good. Will keep an eye on it.

Next shot: Repeat.

Jun 13 2012 01:53:47:400PM 1120613021 Greg Wallace Changes: Repeat.

Result: Plasma through rampdown.

Next shot: Increase Ip to 1.0 MA. nl_04 demand from 9.5e19 to 8e19.

Jun 13 2012 02:03:19:377PM 1120613022 Greg Wallace Changes: Increase Ip to 1.0 MA. nl_04 demand from 9.5e19 to 8e19.

Result: Hesitation again on Ip ramp at about 0.012 s. Higher CIII as compared to shot 4. Pressure and fields look OK. Some hards at 0.02 s.

Next shot: Repeat.

Jun 13 2012 02:18:43:860PM 1120613023 Greg Wallace Changes: Repeat.

Result: Plasma through rampdown at 1.0 MA. Hesitation again in Ip ramp around 0.012 s. Looks like R is too low by 6 cm.

Next shot: Increase RCUR offset in seg 1 from 3000 to 3500 and see what happens.

Jun 13 2012 02:50:39:970PM 1120613024 Greg Wallace Changes: Increase RCUR offset in seg 1 from 3000 to 3500 and see what happens.

Result: Plasma through rampdown. Change in RCUR offset helped, but maybe went too far? RCUR is now a little too large.

Next shot: Decrease RCUR offset in seg 1 from 3500 to 3400.

Jun 13 2012 02:55:22:127PM 1120613025 Greg Wallace Changes: Decrease RCUR offset in seg 1 from 3500 to 3400.

Result: Plasma through rampdown. Startup looks pretty good.

Next shot: Repeat.

Jun 13 2012 03:12:56:187PM 1120613026 Greg Wallace Changes: Repeat.

Result: Plasma through rampdown.

Next shot: Load seg 2 from 1120531025. Increase Ip flattop to 1.1 MA. Increase nl_04 demand to 8e19.

Jun 13 2012 03:26:42:010PM 1120613027 Greg Wallace Changes: Load seg 2 from 1120531025. Increase Ip flattop to 1.1 MA. Increase nl_04 demand to 8e19.

Result: Plasma through rampdown. Good startup.

Next shot: Repeat.

Jun 13 2012 03:37:26:717PM 1120613028 Greg Wallace Changes: Repeat.

Result: Plasma through rampdown.

Next shot: Repeat.

Jun 13 2012 03:53:52:123PM 1120613029 Greg Wallace Changes: Repeat.

Result: Plasma through rampdown.

Next shot: PG5 puff from 0.5 to 0.6 s. Pump out PG5 (H-bottom) and fill with 3psi Ne.

Jun 13 2012 04:27:33:680PM 1120613030 Greg Wallace Changes: PG5 puff from 0.5 to 0.6 s. Pump out PG5 (H-bottom) and fill with 3psi Ne.

Result: Plasma through rampdown. Didn't load PG5 puff change. Only got 50 ms of Ne, not 100 ms.

Next shot: Change PG5 Ne puff to 0.4-0.55 s. LOAD.

Jun 13 2012 04:26:39:477PM 1120613031 Greg Wallace Changes: Change PG5 Ne puff to 0.4-0.55 s. LOAD.

Result: Disruption at 0.63 s. Too much Ne, I think.

Next shot: Reduce PG5 demand from 100V to 60V.

Jun 13 2012 04:36:16:537PM 1120613032 Greg Wallace Changes: Reduce PG5 demand from 100V to 60V.

Result: Fizzle. Late breakdown, pressure is high. Looks like a post-disruption fizzle?

Next shot: Repeat.

Jun 13 2012 04:52:09:170PM 1120613033 Greg Wallace Changes: Repeat.

Result: Fizzle again. Breakdown on time. Big CIII signal! Pressure is still a bit high. RCUR is a bit too small again as compared with shots 31 and 4.

Next shot: Increase RCUR offset in seg 1 back up to 3500 from 3400.

Jun 13 2012 05:06:23:870PM 1120613034 Greg Wallace Changes: Increase RCUR offset in seg 1 back up to 3500 from 3400.

Result: Fizzle. Last shot of the day.

Engineering Operator Comments

Shot Time Type Status Comment

1 08:59:03:013AM Plasma Ok

2 09:12:08:123AM Plasma Ok

3 09:25:53:617AM Plasma Ok

4 09:41:13:827AM Plasma Ok

5 09:54:29:960AM Plasma Ok

6 10:07:39:307AM Plasma Ok

7 10:20:45:987AM Plasma Ok

8 10:34:26:127AM Plasma Ok

9 10:47:34:010AM Plasma Ok

10 11:01:35:010AM Plasma Bad No power shot due to ACK failure

11 11:16:18:800AM Plasma Ok

12 11:29:50:600AM Plasma Ok

13 11:43:56:540AM Plasma Ok

14 11:57:10:533AM Plasma Ok

15 12:13:39:723PM Plasma Ok

16 12:28:21:887PM Plasma Ok

17 12:41:34:797PM Plasma Ok

18 12:54:51:457PM Plasma Ok

19 01:10:18:100PM Plasma Ok

20 01:26:23:317PM Plasma Ok

21 01:40:37:893PM Plasma Ok

22 01:54:13:663PM Plasma Ok

23 02:07:44:750PM Plasma Ok

24 02:30:47:007PM Plasma Ok

25 02:45:47:200PM Plasma Ok

26 02:59:45:340PM Plasma Ok

27 03:13:40:520PM Plasma Ok

28 03:27:48:963PM Plasma Ok

29 03:43:59:830PM Plasma Ok

30 03:59:53:470PM Plasma Ok

31 04:16:42:883PM Plasma Ok

32 04:29:51:390PM Plasma Ok

33 04:43:14:873PM Plasma Ok

34 04:57:08:517PM Plasma Ok

System Availability

Jun 13 2012 08:58:41:380AM

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. New controller installed 5/29/2012 Jun 7 2012 10:40:00:957AM (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 May 31 2012 09:20:06:827AM (wukitch) Steve Wukitch D-port antenna wukitch,ylin
ICRF E-Antenna yes May 31 2012 09:19:57:640AM (wukitch) Steve Wukitch E-port antenna wukitch,ylin
ICRF J-Antenna yes May 31 2012 09:19:47:443AM (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
Jun 13 2012 09:04:57:207AM	1120613001	Steve Wukitch	001 plasma - disruption ~0.5 s
Jun 13 2012 09:27:59:690AM	1120613002	Steve Wukitch	002 request: Bt = 5.2 T, Ip = 0.8 MA, nl04 = 0.7e20 /m^2, LSN D/E : [1.20, 1.5] sec, staircase to 2.4 MW FA-J : [0.70, 1.1] sec, staircase to 2.4 MW Result: plasma - good comparison H/H+D~8% - H-modes in D/E next: reverse antenna order
Jun 13 2012 09:40:37:990AM	1120613003	Steve Wukitch	003 request: Bt = 5.2 T, Ip = 0.8 MA, nl04 = 0.7e20 /m^2, LSN D/E : [0.70, 1.1] sec, staircase to 2.4 MW FA-J : [1.20, 1.5] sec, staircase to 2.4 MW Result: plasma - good comparison H/H+D~8% - H-modes in D/E next: enable GPI, C-side gas puff
Jun 13 2012 09:56:11:187AM	1120613004	Steve Wukitch	004 request: Bt = 5.2 T, Ip = 0.8 MA, nl04 = 0.7e20 /m^2, LSN D/E : [0.70, 1.1] sec, staircase to 2.4 MW FA-J : [1.20, 1.5] sec, staircase to 2.4 MW Result: plasma - good comparison NINJA causes density to increase too much at 1.1 s next: GPI needs to tweak settings delay NINJA to 1.2 s repeat
Jun 13 2012 10:07:16:440AM	1120613005	Steve Wukitch	005 request: Bt = 5.2 T, Ip = 0.8 MA, nl04 = 0.7e20 /m^2, LSN D/E : [0.70, 1.1] sec, staircase to 2.4 MW FA-J : [1.20, 1.5] sec, staircase to 2.4 MW Result: plasma - good comparison NINJA - density still climbing but not some next: switch antenna order Change chromex central wavelength to 550 nm
Jun 13 2012 10:13:27:000AM	1120613006	Steve Wukitch	006 fizzle
Jun 13 2012 10:37:09:637AM	1120613007	Steve Wukitch	007 request: Bt = 5.2 T, Ip = 0.8 MA, nl04 = 0.7e20 /m^2, LSN D/E : [1.20, 1.5] sec, staircase to 2.4 MW FA-J : [0.70, 1.1] sec, staircase to 2.4 MW Result: plasma - good comparison- density climbing from GPI NINJA - density still climbing next: repeat
Jun 13 2012 10:45:22:587AM	1120613008	Steve Wukitch	008 request: Bt = 5.2 T, Ip = 0.8 MA, nl04 = 0.7e20 /m^2, LSN D/E : [1.20, 1.5] sec, staircase to 2.4 MW FA-J : [0.70, 1.1] sec, staircase to 2.4 MW Result: plasma - good comparison next: monopole
Jun 13 2012 10:53:43:877AM	1120613009	Steve Wukitch	009 request: Bt = 5.2 T, Ip = 0.8 MA, nl04 = 0.7e20 /m^2, LSN D/E : [1.20, 1.5] sec, staircase to 2.4 MW FA-J : [0.70, 1.1] sec, staircase to 2.4 MW - 15deg Result: plasma - good data next: try for monopole
Jun 13 2012 11:05:50:503AM	1120613010	Steve Wukitch	010 no power - ack failure
Jun 13 2012 11:29:54:810AM	1120613011	Steve Wukitch	011 request: Bt = 5.2 T, Ip = 0.8 MA, nl04 = 0.7e20 /m^2, LSN D/E : [1.20, 1.5] sec, staircase to 2.4 MW FA-J : [0.70, 1.1] sec, staircase to 2.4 MW - Result: plasma - good data next: GPI off, back to dipole - repeat
Jun 13 2012 11:43:56:913AM	1120613012	Steve Wukitch	012 request: Bt = 5.2 T, Ip = 0.8 MA, nl04 = 0.7e20 /m^2, LSN D/E : [1.20, 1.5] sec, staircase to 2.4 MW FA-J : [0.70, 1.1] sec, staircase to 2.4 MW - Result: plasma - good data Ar was still on next: swap RF order - repeat
Jun 13 2012 11:59:23:680AM	1120613013	Steve Wukitch	013 fizzle
Jun 13 2012 12:20:37:847PM	1120613014	Steve Wukitch	014 request: Bt = 5.2 T, Ip = 0.8 MA, nl04 = 0.7e20 /m^2, LSN D/E : [1.20, 1.5] sec, staircase to 2.4 MW FA-J : [0.70, 1.1] sec, staircase to 2.4 MW - Result: plasma - good data H/H+D 10-14% next: Ip = 0.6 MA
Jun 13 2012 12:16:29:237PM	1120613015	Steve Wukitch	015 fizzle
Jun 13 2012 12:38:23:533PM	1120613016	Steve Wukitch	016 request: Bt = 5.2 T, Ip = 0.6 MA, nl04 = 0.7e20 /m^2, LSN D/E : [1.20, 1.5] sec, staircase to 2.4 MW FA-J : [0.70, 1.1] sec, staircase to 2.4 MW Result: plasma - good data H/H+D ~12% next: swap order & repeat
Jun 13 2012 01:06:27:900PM	1120613017	Steve Wukitch	017 request: Bt = 5.2 T, Ip = 0.6 MA, nl04 = 0.7e20 /m^2, LSN D/E : [1.20, 1.5] sec, staircase to 2.4 MW FA-J : [0.70, 1.1] sec, staircase to 2.4 MW Result: plasma - good data H/H+D ~12% next: raise density
Jun 13 2012 01:05:55:483PM	1120613018	Steve Wukitch	018 request: Bt = 5.2 T, Ip = 0.6 MA, nl04 = 0.8e20 /m^2, LSN D/E : [1.20, 1.5] sec, staircase to 2.4 MW FA-J : [0.70, 1.1] sec, staircase to 2.4 MW Result: plasma - good data H/H+D ~12% brief H-mode late next: swap RF order
Jun 13 2012 01:20:18:837PM	1120613019	Steve Wukitch	019 request: Bt = 5.2 T, Ip = 0.6 MA, nl04 = 0.8e20 /m^2, LSN D/E : [1.20, 1.5] sec, staircase to 2.4 MW FA-J : [0.70, 1.1] sec, staircase to 2.4 MW Result: plasma - good data H/H+D ~10% brief H-mode late next: GPI on, raise density
Jun 13 2012 01:47:30:710PM	1120613020	Steve Wukitch	020 request: Bt = 5.2 T, Ip = 0.6 MA, nl04 = 0.95e20 /m^2, LSN D/E : [1.10, 1.5] sec, staircase to 2.4 MW FA-J : [0.60, 1.] sec, staircase to 2.4 MW Result: plasma - good data H/H+D ~10% next: swap RF antenna order
Jun 13 2012 01:47:40:820PM	1120613021	Steve Wukitch	021 request: Bt = 5.2 T, Ip = 0.6 MA, nl04 = 0.95e20 /m^2, LSN D/E : [0.6, 1.0] sec, staircase to 2.4 MW FA-J : [1.20, 1.5] sec, staircase to 2.4 MW Result: plasma - good data H/H+D ~10% next: nl04~0.8, Ip~1 MA
Jun 13 2012 02:07:26:247PM	1120613022	Steve Wukitch	022 request: Bt = 5.2 T, Ip = 1 MA, nl04 = 0.8e20 /m^2, LSN D/E : [1.20, 1.5] sec, staircase to 2.4 MW FA-J : [0.6, 1.0] sec, staircase to 2.4 MW Result: plasma - H-modes late - RF is faulting H/H+D ~9% next: repeat
Jun 13 2012 02:17:04:083PM	1120613023	Steve Wukitch	023 request: Bt = 5.2 T, Ip = 1 MA, nl04 = 0.8e20 /m^2, LSN D/E : [1.1, 1.5] sec, staircase to 2.4 MW FA-J : [0.6, 1.] sec, staircase to 2.4 MW Result: plasma - H-modes late - reasonable data H/H+D ~10% next: swap RF antenna order
Jun 13 2012 02:35:22:887PM	1120613024	Steve Wukitch	024 request: Bt = 5.2 T, Ip = 1 MA, nl04 = 0.8e20 /m^2, LSN D/E : [0.6, 1.] sec, staircase to 2.4 MW FA-J : [1.1, 1.5] sec, staircase to 2.4 MW Result: plasma - H-modes late - reasonable data H/H+D ~10% next: GPI off, Chromex to 550 nm central wavelength
Jun 13 2012 02:53:05:250PM	1120613025	Steve Wukitch	025 request: Bt = 5.2 T, Ip = 1 MA, nl04 = 0.8e20 /m^2, LSN D/E : [0.6, 1.] sec, staircase to 2.4 MW FA-J : [1.1, 1.5] sec, staircase to 2.4 MW Result: plasma - reasonable data H/H+D ~12% next: swap RF antenna order
Jun 13 2012 03:12:37:350PM	1120613026	Steve Wukitch	026 request: Bt = 5.2 T, Ip = 1 MA, nl04 = 0.8e20 /m^2, LSN D/E : [1.1, 1.5] sec, staircase to 2.4 MW FA-J : [0.6, 1.] sec, staircase to 2.4 MW Result: plasma - H-modes late - reasonable data H/H+D ~10% next: USN from 1120531025 with 1.1 MA stacking antenna power
Jun 13 2012 03:32:24:743PM	1120613027	Steve Wukitch	027 request: Bt = 5.2 T, Ip = 1.1 MA, nl04 = 0.8e20 /m^2, USN D/E : [1., 1.5] sec, 2.4 MW FA-J : [0.6, 1.5] sec, staircase to 2.4 MW Result: plasma - I mode maybe next: repeat
Jun 13 2012 03:37:35:937PM	1120613028	Steve Wukitch	028 request: Bt = 5.2 T, Ip = 1.1 MA, nl04 = 0.8e20 /m^2, USN D/E : [1., 1.5] sec, 2.4 MW FA-J : [0.6, 1.5] sec, staircase to 2.4 MW Result: plasma - lost E antenna early; FA-J was improved next: repeat
Jun 13 2012 04:08:55:660PM	1120613029	Steve Wukitch	029 request: Bt = 5.2 T, Ip = 1.1 MA, nl04 = 0.8e20 /m^2, USN D/E : [1., 1.5] sec, 2.4 MW FA-J : [0.6, 1.5] sec, staircase to 2.4 MW Result: plasma next: repeat with Ne (3 psi, H-bottom, 0.5-0.6)
Jun 13 2012 04:08:46:490PM	1120613030	Steve Wukitch	030 request: Bt = 5.2 T, Ip = 1.1 MA, nl04 = 0.8e20 /m^2, USN D/E : [1., 1.5] sec, 2.4 MW FA-J : [0.6, 1.5] sec, staircase to 2.4 MW Result: plasma - short Neon pulse not as long as intended next: repeat with Ne longer pulse - 0.4-0.55 s
Jun 13 2012 04:26:59:350PM	1120613031	Steve Wukitch	031 request: Bt = 5.2 T, Ip = 1.1 MA, nl04 = 0.8e20 /m^2, USN D/E : [1., 1.5] sec, 2.4 MW FA-J : [0.6, 1.5] sec, staircase to 2.4 MW Result: plasma too much Neon (0.4-0.55 at 100 V) next: repeat with Ne (3 psi, H-bottom, 0.4-0.55 at 60 V)
Jun 13 2012 04:34:03:093PM	1120613032	Steve Wukitch	032 post disruption fizzle
Jun 13 2012 05:12:02:427PM	1120613033	Steve Wukitch	033 fizzle
Jun 13 2012 05:11:54:473PM	1120613034	Steve Wukitch	034 fizzle

Physics Operator Comments
Jun 13 2012 09:09:52:110AM	1120613001	Greg Wallace	Changes: Load seg 1 from 1120512029 and seg 2 from 1120531034. Result: Disruption at 0.53 s. Locked mode? Low density, high current. Next shot: Increase nl_04 demand to 0.7e20 in flattop.
Jun 13 2012 09:25:40:110AM	1120613002	Greg Wallace	Changes: Increase nl_04 demand to 0.7e20 in flattop. Result: Plasma through rampdown. Startup doesn't look too great---slow current ramp after 0.015 s. Lots of CIII starting at 0.009 s. Next shot: Repeat. See if startup cleans up.
Jun 13 2012 09:36:15:860AM	1120613003	Greg Wallace	Changes: Repeat. See if startup cleans up. Result: Startup looks a little better. Plasma through rampdown. Next shot: Repeat with GPI puff.
Jun 13 2012 09:53:34:027AM	1120613004	Greg Wallace	Changes: Repeat with GPI puff. Result: Plasma through rampdown. Startup looks good. Next shot: Repeat with different GPI puff.
Jun 13 2012 10:10:27:660AM	1120613005	Greg Wallace	Changes: Repeat with different GPI puff. Result: Plasma through rampdown. Early current ramp is slowing down again... Next shot: Repeat.
Jun 13 2012 10:19:24:450AM	1120613006	Greg Wallace	Changes: Repeat. Result: Fizzle. A little bounce at 0.01 s? Fields and position look OK. CIII spike at same time as the bounce. Next shot: Repeat and hope it goes through.
Jun 13 2012 10:33:27:770AM	1120613007	Greg Wallace	Changes: Repeat and hope it goes through. Result: Plasma through rampdown. Still a little current hesitation at 0.012 s. Next shot: Repeat.
Jun 13 2012 10:46:08:727AM	1120613008	Greg Wallace	Changes: Repeat. Result: Plasma through rampdown. Again, a little Ip hesitation around 12 ms. Next shot: Enable 60 ms Ar puff from PG1 (B-side lower).
Jun 13 2012 11:05:13:233AM	1120613009	Greg Wallace	Changes: Enable 60 ms Ar puff from PG1 (B-side lower). Result: Plasma through rampdown. Next shot: Repeat.
Jun 13 2012 11:05:42:510AM	1120613010	Greg Wallace	Changes: Repeat Result: ACK failure. No power shot. Next shot: Repeat.
Jun 13 2012 11:22:39:507AM	1120613011	Greg Wallace	Changes: Repeat Result: Plasma through rampdown. Slight bounce at 0.01 s. Will keep an eye on it. Next shot: Repeat.
Jun 13 2012 11:43:28:843AM	1120613012	Greg Wallace	Changes: Repeat. Result: Plasma through rampdown. Still a little bounce at 0.01 s. Next shot: Repeat.
Jun 13 2012 11:56:46:850AM	1120613013	Greg Wallace	Changes: Repeat. Result: Fizzle. Bounce at 12 ms causes big spike in CIII. Bz0 is a little high compared to shot 4. Rcur is also a little low compared to shot 4. Pressure looks good. Next shot: Make IC_EF4U more negative by 10 A to reduce early Bz0 (-1050 A to -1060 A). Cross fingers.
Jun 13 2012 12:12:00:690PM	1120613014	Greg Wallace	Changes: Make IC_EF4U more negative by 10 A to reduce early Bz0 (-1050 A to -1060 A). Cross fingers. Result: Plasma through rampdown. Missing magnetics and efit data? Josh & Tom fixed the problem and recovered the data. Next shot: Decrease Ip to 600 kA in flattop. Disable B-side lower (Ar) puff.
Jun 13 2012 12:27:31:597PM	1120613015	Greg Wallace	Changes: Decrease Ip to 600 kA in flattop. Result: Fizzle. Seems to be doing well until 0.015 s, then CIII jumps up and plasma bounces. Looks like the -10 A addition to IC_EF4U for shot 14 was in seg 2 not seg 1. Next shot: Add -10 A to IC_EF4U in seg 1 this time. (-1280 to -1290 A)
Jun 13 2012 12:38:38:543PM	1120613016	Greg Wallace	Changes: Add -10 A to IC_EF4U in seg 1 this time. (-1280 to -1290 A) Result: Plasma through rampdown. Bz0 is still a tiny bit higher than on shot 4. Next shot: Decrease IC_EF4U by 10 A again. (-1290 to -1300 A)
Jun 13 2012 12:50:14:703PM	1120613017	Greg Wallace	Changes: Decrease IC_EF4U by 10 A again. (-1290 to -1300 A) Result: Plasma through rampdown. Startup looks nice. Next shot: Increase nl_04 demand from 7e19 to 8e19 in seg 2.
Jun 13 2012 01:07:51:180PM	1120613018	Greg Wallace	Changes: Increase nl_04 demand from 7e19 to 8e19 in seg 2. Result: Plasma through rampdown. Next shot: Repeat.
Jun 13 2012 01:18:41:780PM	1120613019	Greg Wallace	Changes: Repeat. Result: Plasma through rampdown. Next shot: Increase nl_04 demand from 8e19 to 9.5e19.
Jun 13 2012 01:34:49:110PM	1120613020	Greg Wallace	Changes: Increase nl_04 demand from 8e19 to 9.5e19. Result: Plasma through rampdown. A little hesitation in the current ramp at 0.015 s. Fields and pressure look good. Will keep an eye on it. Next shot: Repeat.
Jun 13 2012 01:53:47:400PM	1120613021	Greg Wallace	Changes: Repeat. Result: Plasma through rampdown. Next shot: Increase Ip to 1.0 MA. nl_04 demand from 9.5e19 to 8e19.
Jun 13 2012 02:03:19:377PM	1120613022	Greg Wallace	Changes: Increase Ip to 1.0 MA. nl_04 demand from 9.5e19 to 8e19. Result: Hesitation again on Ip ramp at about 0.012 s. Higher CIII as compared to shot 4. Pressure and fields look OK. Some hards at 0.02 s. Next shot: Repeat.
Jun 13 2012 02:18:43:860PM	1120613023	Greg Wallace	Changes: Repeat. Result: Plasma through rampdown at 1.0 MA. Hesitation again in Ip ramp around 0.012 s. Looks like R is too low by 6 cm. Next shot: Increase RCUR offset in seg 1 from 3000 to 3500 and see what happens.
Jun 13 2012 02:50:39:970PM	1120613024	Greg Wallace	Changes: Increase RCUR offset in seg 1 from 3000 to 3500 and see what happens. Result: Plasma through rampdown. Change in RCUR offset helped, but maybe went too far? RCUR is now a little too large. Next shot: Decrease RCUR offset in seg 1 from 3500 to 3400.
Jun 13 2012 02:55:22:127PM	1120613025	Greg Wallace	Changes: Decrease RCUR offset in seg 1 from 3500 to 3400. Result: Plasma through rampdown. Startup looks pretty good. Next shot: Repeat.
Jun 13 2012 03:12:56:187PM	1120613026	Greg Wallace	Changes: Repeat. Result: Plasma through rampdown. Next shot: Load seg 2 from 1120531025. Increase Ip flattop to 1.1 MA. Increase nl_04 demand to 8e19.
Jun 13 2012 03:26:42:010PM	1120613027	Greg Wallace	Changes: Load seg 2 from 1120531025. Increase Ip flattop to 1.1 MA. Increase nl_04 demand to 8e19. Result: Plasma through rampdown. Good startup. Next shot: Repeat.
Jun 13 2012 03:37:26:717PM	1120613028	Greg Wallace	Changes: Repeat. Result: Plasma through rampdown. Next shot: Repeat.
Jun 13 2012 03:53:52:123PM	1120613029	Greg Wallace	Changes: Repeat. Result: Plasma through rampdown. Next shot: PG5 puff from 0.5 to 0.6 s. Pump out PG5 (H-bottom) and fill with 3psi Ne.
Jun 13 2012 04:27:33:680PM	1120613030	Greg Wallace	Changes: PG5 puff from 0.5 to 0.6 s. Pump out PG5 (H-bottom) and fill with 3psi Ne. Result: Plasma through rampdown. Didn't load PG5 puff change. Only got 50 ms of Ne, not 100 ms. Next shot: Change PG5 Ne puff to 0.4-0.55 s. LOAD.
Jun 13 2012 04:26:39:477PM	1120613031	Greg Wallace	Changes: Change PG5 Ne puff to 0.4-0.55 s. LOAD. Result: Disruption at 0.63 s. Too much Ne, I think. Next shot: Reduce PG5 demand from 100V to 60V.
Jun 13 2012 04:36:16:537PM	1120613032	Greg Wallace	Changes: Reduce PG5 demand from 100V to 60V. Result: Fizzle. Late breakdown, pressure is high. Looks like a post-disruption fizzle? Next shot: Repeat.
Jun 13 2012 04:52:09:170PM	1120613033	Greg Wallace	Changes: Repeat. Result: Fizzle again. Breakdown on time. Big CIII signal! Pressure is still a bit high. RCUR is a bit too small again as compared with shots 31 and 4. Next shot: Increase RCUR offset in seg 1 back up to 3500 from 3400.
Jun 13 2012 05:06:23:870PM	1120613034	Greg Wallace	Changes: Increase RCUR offset in seg 1 back up to 3500 from 3400. Result: Fizzle. Last shot of the day.

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	08:59:03:013AM	Plasma	Ok
2	09:12:08:123AM	Plasma	Ok
3	09:25:53:617AM	Plasma	Ok
4	09:41:13:827AM	Plasma	Ok
5	09:54:29:960AM	Plasma	Ok
6	10:07:39:307AM	Plasma	Ok
7	10:20:45:987AM	Plasma	Ok
8	10:34:26:127AM	Plasma	Ok
9	10:47:34:010AM	Plasma	Ok
10	11:01:35:010AM	Plasma	Bad	No power shot due to ACK failure
11	11:16:18:800AM	Plasma	Ok
12	11:29:50:600AM	Plasma	Ok
13	11:43:56:540AM	Plasma	Ok
14	11:57:10:533AM	Plasma	Ok
15	12:13:39:723PM	Plasma	Ok
16	12:28:21:887PM	Plasma	Ok
17	12:41:34:797PM	Plasma	Ok
18	12:54:51:457PM	Plasma	Ok
19	01:10:18:100PM	Plasma	Ok
20	01:26:23:317PM	Plasma	Ok
21	01:40:37:893PM	Plasma	Ok
22	01:54:13:663PM	Plasma	Ok
23	02:07:44:750PM	Plasma	Ok
24	02:30:47:007PM	Plasma	Ok
25	02:45:47:200PM	Plasma	Ok
26	02:59:45:340PM	Plasma	Ok
27	03:13:40:520PM	Plasma	Ok
28	03:27:48:963PM	Plasma	Ok
29	03:43:59:830PM	Plasma	Ok
30	03:59:53:470PM	Plasma	Ok
31	04:16:42:883PM	Plasma	Ok
32	04:29:51:390PM	Plasma	Ok
33	04:43:14:873PM	Plasma	Ok
34	04:57:08:517PM	Plasma	Ok