Alcator C-Mod Run 1120626 Information

Miniproposals

Miniproposal: 696

Date Filed: 5/4/2012

Title: Continued investigations of dilution effects on turbulence and transport in low density ohmic plasma

First Author: Paul Ennever

Session Leader: Paul Ennever (shots 1-17)

Miniproposal: 703

Date Filed: 5/23/2012

Title: Commisioning of the correlation electron cyclotron emission diagnostic

First Author: Choongki Sung

Session Leader: Choongki Sung (shots 18-32)

Operators
Session leader(s):	Paul Ennever,Choongki Sung
Physics operator(s):	Earl Marmar
Engineering operator(s):	Bill Cochran,Ed Fitzgerald

Engineering Operator Run Comment
MP703 "Commissioning of the Correlation Electron Cyclotron Emission Diag

Session Leader Plans

Entered: Jun 25 2012 11:23:41:003AM

Author: Choongki Sung

MP703 "Commissioning of the Correlation Electron Cyclotron Emission Diagnostic"

The purpose of this run is to measure electron temperature fluctuations using CECE diagnostic. Total 12 shots are planned, B field will be scanned from 5.3T to 5.6T with 0.1T interval shot by shot while maintaining other plasma conditions.

All parts
===============
Working gas : D2
Equilibrium : LSN
nl04=0.5

Detailed Sequence
==================

Part 1 : ICRF heated L-mode plasma (Ip=0.6MA, 0.5MW ICRF (t:0.5-1.5s)), B field will be scanned from 5.3T to 5.6T. (4 shots, i.e., 5.3, 5.4, 5.5 and 5.6T)

Part 2 : Ohmic SOC plasma (Ip=0.6MA), B field will be scanned from 5.3T to 5.6T. (4 shots, i.e., 5.3, 5.4, 5.5 and 5.6T)

Part 3 : Ohmic LOC plasma (Ip=1.1MA), B field will be scanned from 5.3T to 5.6T. (4 shots, i.e., 5.3, 5.4, 5.5 and 5.6T)

If time remains:
Locked mode shot for Hirex rotation calibration based on 1120615009.

Required diagnostics
======================
Magnetics,GPC,FRCECE, core and edge Thomson, TCI, Hirex, PCI, O-mode reflectometer

Entered: Jun 25 2012 05:28:51:153PM

Author: Paul Ennever

MP696 "Continued investigations of dilution effects on turbulence and transport in low density ohmic plasma"

The purpose of this run is to repeat discharges from 1120615XXX with the PCI mask in place to determine the mode propagation direction. Shots will be repeated from the highest density to the lowest and preference given to the densities near the LOC-SOC transition.

Helium ECDC the night before is requested

All Parts
==============
Working Gas: D2
Equilibrium: based on 1120615029 (USN, 5.4T, 1.0 MA)
NINJA: 10 PSI He @ 1.35s for GPI
H-Bot: 1 psi Ar puff at 0.4s for 75ms with 100V for HIREX-Sr, will increase pressure to 2 psi when done with N2 seeding and change voltage and time
B-Lower: 15 psi N2, voltages variable
Cryopump: On when seeding, off when not seeding
DNB: On for boron CXRS

Detailed Sequence
==================

Part 0: HIREXSR locked mode calibration
Based on 1120615009 (most recent successful locked mode calibration)
Wait for successful shot before doing this

Part 1: Repeat Shot 1120615006 (nl04=0.55) with mask 9 degrees CCW (upper portion of plasma)

Part 2: Repeat Shot 1120615005 (nl04=0.65, but correct Bt) with mask 9 degrees CCW (upper portion of plasma)

Part 3: Repeat Shot 1120615029 (nl04=0.73) with mask 9 degrees CCW (upper portion of plasma)

Part 4: Repeat Shot 1120615028 (nl04=0.82) with mask 9 degrees CCW (upper portion of plasma)

Nitrogen Seeding Begins:

Part 5: Repeat Shot 1120615027 (nl04=0.80, with 70V on PG1) with mask 9 degrees CCW (upper portion of plasma)

Part 6: Repeat Shot 1120615026 (nl04=0.80, with 60V on PG1) with mask 9 degrees CCW (upper portion of plasma)

Part 7: Repeat Shot 1120615025 (nl04=0.75, with 55V on PG1) with mask 9 degrees CCW (upper portion of plasma)

Part 8: Repeat Shot 1120615024 (nl04=0.65, with 45V on PG1) with mask 9 degrees CCW (upper portion of plasma)

Part 9: Repeat Shot 1120615022 (nl04=0.55, with 45V on PG1) with mask 9 degrees CCW (upper portion of plasma)

Part 10: Switch mask to 9 degrees CW and repeat parts 5 & 6

Contingencies:

repeat part 7 with mask in CW position

repeat parts 1 & 2 with mask in CW position

After run is finished, take out PCI mask for latter half of run day.

Physics Operators Plans

Entered: Jun 26 2012 08:55:34:740AM

Author: Earl Marmar

MP696 "Continued investigations of dilution effects on turbulence and transport in low density ohmic plasma" (first half)

MP703 "Commissioning of the Correlation Electron Cyclotron Emission Diagnostic" (second half)

SL: P. Ennever (first half), C. Sung (second half)
PO: E. Marmar

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

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

Power systems as on: 1120615029 (USN, 5.4T, 1.1MA)

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 15 psi N2 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 He DISABLED
fill H-bot lower with 1 psi Ar 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 (helium)
ICRF(yes/no): yes (second half of the run)
LH(yes/no): no
Cryopump (yes/no): yes
DNB (yes/no): yes

Vessel temperature: 35/35/35

------------------------------
ECDC Parameters
------------------------------
Gas: HELIUM
sweep: 44/103/45 cm
scan: 20/120 s
Pressure: 5.0e-5 Torr

Session Leader Summaries

Entered: Jun 26 2012 01:57:25:797PM

Author: Paul Ennever

We managed to get the following shots:

With mask set to 9 Degrees CCW (looking at BOTTOM of plasma, previous notes were incorrect)
Shot |Request | Trange | nl04 | PG1
====================================================
05 |0.55,us |[0.8,1.1] | 0.55 | 0 |
--------------------------------------------------------------------------
06 |0.65,us |[0.8,1.1] | 0.65 | 0 |
--------------------------------------------------------------------------
07 |0.75,us |[0.8,1.1] | 0.73 | 0 |
--------------------------------------------------------------------------
08 |0.82,us |[0.8,1.1] | 0.83 | 0 |
--------------------------------------------------------------------------
11 |0.80,sd |[1.0,1.3] | 0.82 | 70 |
--------------------------------------------------------------------------
12 |0.80,sd |[1.0,1.3] | 0.84 | 60 |
--------------------------------------------------------------------------
14 |0.75,sd |[1.0,1.3] | 0.76 | 55 |
---------------------------------------------------------------------

With mask set to 9 Degrees CW (Looking at TOP of plasma)
Shot |Request | Trange | nl04 | PG1
====================================================
15 |0.75,sd |[1.0,1.3] | 0.76 | 55 |
---------------------------------------------------------------------
17 |0.80,sd |[0.9,1.0] | 0.84 | 70 | Poloidal Detachment after 1s?
---------------------------------------------------------------------

Fizzles were a problem for many shots, but we managed to get a good data set regardless

Entered: Jun 26 2012 01:58:42:397PM

Author: Paul Ennever

We managed to get the following shots:

With mask set to 9 Degrees CCW (looking at BOTTOM of plasma, previous notes were incorrect)
Shot |Request | Trange | nl04 | PG1
====================================================
05 |0.55,us |[0.8,1.1] | 0.55 | 0 |
--------------------------------------------------------------------------
06 |0.65,us |[0.8,1.1] | 0.65 | 0 |
--------------------------------------------------------------------------
07 |0.75,us |[0.8,1.1] | 0.73 | 0 |
--------------------------------------------------------------------------
08 |0.82,us |[0.8,1.1] | 0.83 | 0 |
--------------------------------------------------------------------------
11 |0.80,sd |[1.0,1.3] | 0.82 | 70 |
--------------------------------------------------------------------------
12 |0.80,sd |[1.0,1.3] | 0.84 | 60 |
--------------------------------------------------------------------------
14 |0.75,sd |[1.0,1.3] | 0.76 | 55 |
---------------------------------------------------------------------

With mask set to 9 Degrees CW (Looking at TOP of plasma)
Shot |Request | Trange | nl04 | PG1
====================================================
15 |0.75,sd |[1.0,1.3] | 0.76 | 55 |
---------------------------------------------------------------------
17 |0.80,sd |[0.9,1.0] | 0.84 | 70 | Poloidal Detachment after 1s?
---------------------------------------------------------------------

Fizzles were a problem for many shots, but we managed to get a good data set regardless.

Entered: Jun 26 2012 06:07:49:227PM

Author: Choongki Sung

We managed to get the following shots:

shot / nl04 / Ip [MA] / Bt [T] / confinement region / observation (core, rho<0.9), need to record

19 / 0.42 / 0.8 / 5.44/ LOC (near the boundary) / fluctuation looks weak (ch1 & 2), 100MHz BW filters are used for ch1 and 2.
23 / 0.5 / 0.9 / 5.44 / LOC (definitely) / We observe fluctuations (ch1 & 2), 200MHz filters are used for ch1 and 2.
24 / 0.5 / 0.9 / 5.36 / LOC / Fluctuations observed (ch3 & 4, strong, ch 1 & 2 weak)
25 / 0.5 / 0.9 / 5.55 / LOC / Fluctuations observed
27 / 0.7 / 0.9 / 5.44 / rotation reversal shot
28 / 0.8 / 0.9 / 5.44 / SOC / No or very weak fluctuations (ch1 & 2)
29 / 0.4 / 0.8 / 5.44 / locked mode / good locked mode
31 / 0.5 / 0.9 / 5.44 / L-mode (0.5MW ICRF) / Fluctuations are similar to the shot 23
32 / 0.5 / 0.9 / 5.44 / L-mode (1.0MW ICRF) / Fluctuation amplitude (absolute) increased, fluctuation width is similar to shot 23 and 31.

Session Leader Comments

Jun 26 2012 09:11:46:627AM 1120626001 Paul Ennever PCI Set to 9 degrees CCW.

Start with Part 1 of session leader plan:

Repeat Shot 1120615006 (nl04=0.55) with mask 9 degrees CCW (upper portion of plasma)

Result: No PCI and no H-Bottom

Density and equilibrium are good

Next: Repeat with PCI and Argon

Jun 26 2012 09:23:22:417AM 1120626002 Paul Ennever PCI Set to 9 degrees CCW.
Request:

Repeat Shot 1120615006 (nl04=0.55) with mask 9 degrees CCW (upper portion of plasma)

Result: Fizzle

Next: Repeat

Jun 26 2012 09:42:56:197AM 1120626003 Paul Ennever PCI Set to 9 degrees CCW.
Request:

Repeat Shot 1120615006 (nl04=0.55) with mask 9 degrees CCW (upper portion of plasma)

Result: Fizzle

Next: Repeat

Jun 26 2012 09:52:37:510AM 1120626004 Paul Ennever PCI Set to 9 degrees CCW.
Request:

Repeat Shot 1120615006 (nl04=0.55) with mask 9 degrees CCW (upper portion of plasma)

Result: Fizzle

Next: Repeat

Jun 26 2012 10:09:53:030AM 1120626005 Paul Ennever PCI Set to 9 degrees CCW.
Request:

Repeat Shot 1120615006 (nl04=0.55) with mask 9 degrees CCW (upper portion of plasma)

Result: Good repeat shot

Next: Move on to Part 2: Repeat shot 1120615005 (nl04=0.65, but same Bt as shot 5 from today)

Jun 26 2012 10:24:41:247AM 1120626006 Paul Ennever PCI Set to 9 degrees CCW.
Request:

Repeat Shot 1120615005 (nl04=0.65) with mask 9 degrees CCW (upper portion of plasma)

Result: Good repeat shot

Next: Move on to Part 3: Repeat shot 1120615029 (nl04=0.73)

Jun 26 2012 11:11:20:683AM 1120626007 Paul Ennever PCI Set to 9 degrees CCW.
Request:

Repeat Shot 1120615029 (nl04=0.73) with mask 9 degrees CCW (upper portion of plasma)

Result: Good repeat shot

Next: Move on to Part 4: Repeat shot 1120615028 (nl04=0.82)

Jun 26 2012 10:58:15:273AM 1120626008 Paul Ennever PCI Set to 9 degrees CCW.
Request:

Repeat Shot 1120615028 (nl04=0.82) with mask 9 degrees CCW (upper portion of plasma)

Result: Disrupted at 1.2 seconds, but ran long enough to be useful

Next: Move on to Part 0: Locked Mode

Jun 26 2012 11:20:09:037AM 1120626009 Paul Ennever PCI Set to 9 degrees CCW.
Request:

Repeat Shot 1120615009: Locked Mode

Result: Locked mode, but no argon

Next: Repeat

Jun 26 2012 11:30:58:013AM 1120626010 Paul Ennever PCI Set to 9 degrees CCW.
Request:

Repeat Shot 1120615009: Locked Mode

Result: Good Locked mode, almost dies at ~1 second

Next: Move on to Part 5: Repeat Shot 1120615027 (nl04=0.8, 70V on PG1)

Jun 26 2012 11:48:57:540AM 1120626011 Paul Ennever PCI Set to 9 degrees CCW.
Request:

Repeat Shot 1120615026: nl04 = 0.8, 60V on PG1

Result: Great repeat: same ne, same prad, same reversal

Next: Move on to Part 6: Repeat Shot 1120615026 (nl04=0.8, 60V on PG1)

Jun 26 2012 12:12:38:543PM 1120626012 Paul Ennever PCI Set to 9 degrees CCW.
Request:

Repeat Shot 1120615026: nl04 = 0.8, 60V on PG1

Result: Great repeat: same ne, same prad, same reversal

Next: Move on to Part 7: Repeat Shot 1120615025 (nl04=0.75, 55V on PG1)

Jun 26 2012 12:32:08:363PM 1120626014 Paul Ennever PCI Set to 9 degrees CCW.
Request:

Repeat Shot 1120615025: nl04 = 0.75, 55V on PG1

Result: Shot ran and was good repeat of reference shot

Next: Repeat but switch mask to 9 degrees CW

Jun 26 2012 12:54:11:933PM 1120626015 Paul Ennever PCI Set to 9 degrees CW.
Request:

Repeat Shot 1120615025: nl04 = 0.75, 55V on PG1

Result: Shot ran

Next: Repeat shot 11 from today with mask at 9 degrees CW

Jun 26 2012 01:02:14:640PM 1120626016 Paul Ennever PCI Set to 9 degrees CW.
Request:

Repeat Shot 11: nl04 = 0.8, 70V on PG1

Result: Fizzle

Next: Repeat

Jun 26 2012 01:43:01:823PM 1120626017 Paul Ennever PCI Set to 9 degrees CW.
Request:

Repeat Shot 11: nl04 = 0.8, 70V on PG1

Result: Plasma Disrupted a little after 1.0s, but there was enough flat top to get good data

Next: Finished

Jun 26 2012 01:32:44:927PM 1120626018 Choongki Sung The shot plan is changed.
Part 3 will be do first from shot 18, and then part 2 and part 1 will be done.
The reference shot for part 3 will be 1120607008.

Jun 26 2012 01:39:14:300PM 1120626018 Choongki Sung request : nl04 ~ 0.42, Bt=5.4T and Ip=0.8MA LOC ohmic plasma

result : fizzle

Next : repeat

Jun 26 2012 01:58:43:157PM 1120626019 Choongki Sung request : nl04 ~ 0.42, Bt=5.4T and Ip=0.8MA LOC ohmic plasma

result : LOC ohmic plasma, but slightly high density, near the boundary between LOC and SOC. Fluctuations between ch1 and ch2 looks weak.

request : increase plasma current 1.0 MA

Jun 26 2012 02:16:58:727PM 1120626020 Choongki Sung request : nl04 ~ 0.42, Bt=5.4T and Ip=1.0MA LOC ohmic plasma

result : disrupted at on flattop (might be due to locked mode ?)
request : reduce the plasma current to 0.9MA to prevent locked mode

Jun 26 2012 02:26:47:350PM 1120626021 Choongki Sung request : nl04 ~ 0.42, Bt=5.4T and Ip=0.9MA LOC ohmic plasma

result : disrupted due to locked mode again

request : increase density(nl04) to 0.5e20 (m^-2)

Jun 26 2012 02:54:44:587PM 1120626023 Choongki Sung request : nl04 ~ 0.5, Bt=5.4T and Ip=0.9MA LOC ohmic plasma

result : good steady shot. Fluctuations are observed.

next : B field will be changed to 5.36T

Jun 26 2012 03:07:42:727PM 1120626024 Choongki Sung request : nl04 ~ 0.5, Bt=5.36T and Ip=0.9MA LOC ohmic plasma

result : Good shot, fluctuations were weak between ch1 &2, but strong between ch3 & 4

next : Do one more LOC shot Bt=5.55T

Jun 26 2012 03:20:41:107PM 1120626025 Choongki Sung request : nl04 ~ 0.5, Bt=5.55T and Ip=0.9MA LOC ohmic plasma

result : Steady shot, stronger fluctuations from ch1 and 2 as expected.

next : Move to SOC region. Increase density, nl04 to 0.7

Jun 26 2012 03:37:57:363PM 1120626026 Choongki Sung request : Start part 2. nl04 ~ 0.7, Bt=5.55T and Ip=0.9MA SOC ohmic plasma

result : no TF

next : change B field to the one in shot 23

Jun 26 2012 03:55:16:033PM 1120626027 Choongki Sung request : nl04 ~ 0.7, Bt=5.44T and Ip=0.9MA SOC ohmic plasma

result : rotatin reversal shot.

next : Increase nl04 from 0.7 to 0.8

Jun 26 2012 04:12:56:127PM 1120626028 Choongki Sung request : nl04 ~ 0.8, Bt=5.44T and Ip=0.9MA SOC ohmic plasma

result : Good SOC plasma. No fluctuations from ch1 and 2

next : Locked mode for Hirex calibration

Jun 26 2012 04:22:04:910PM 1120626029 Choongki Sung request : Locked mode (reference shot : 1120626010)

result : Good locked mode

next : Repeat shot 23 with 1MW ICRF power

Jun 26 2012 04:37:34:987PM 1120626030 Choongki Sung request : nl04 ~ 0.5, Bt=5.4T and Ip=0.9MA, 1MW ICRF power

result : fizzle

next : Try again !

Jun 26 2012 04:56:20:720PM 1120626031 Choongki Sung request : nl04 ~ 0.5, Bt=5.4T and Ip=0.9MA, 1MW ICRF power

result : 0.5MW ICRF power plasma

next : Try 1MW ICRF power

Jun 26 2012 05:26:56:170PM 1120626032 Choongki Sung request : nl04 ~ 0.5, Bt=5.4T and Ip=0.9MA, 1MW ICRF power

result : 1MW ICRF plasma, fluctuations becomes bigger than shot 23, 31

next : end of run

Physics Operator Comments

Jun 26 2012 09:15:15:587AM 1120626001 Earl Marmar load from 1120615006 (cryopump startup)
TF current to -150kA in segment 2
plasma, small bounce in startup
disrupt in rampdown (700 kA)

Jun 26 2012 09:26:31:030AM 1120626002 Earl Marmar TF PLC start to -1.1 s (from -1.0) for polarimetry
enable argon (H-bottom)

fizzle, almost no current rise
B_R may be slightly negative

Jun 26 2012 09:45:30:863AM 1120626003 Earl Marmar B_R offset to +0.0015 (from +0.001)
Load at 26-Jun-2012 09:25:33.00

fizzle

Jun 26 2012 10:02:51:497AM 1120626004 Earl Marmar prefill puff to 45 ms (from 49)
Load at 26-Jun-2012 09:44:52.00

fizzle
a bit of current rise this time
very early hards (with little current)

Jun 26 2012 10:09:14:903AM 1120626005 Earl Marmar reduce PG3 puff around t=0
Load at 26-Jun-2012 09:54:43.00

plasma, full length
startup looks ok

Jun 26 2012 10:31:30:840AM 1120626006 Earl Marmar increase argon puff (PG5) to 60 ms (from 50)
nl_04 target to 7.04e19
Load at 26-Jun-2012 10:16:55.00

plasma, full length
some early hards
B_R now a bit positive at t=0

Jun 26 2012 10:45:24:827AM 1120626007 Earl Marmar nl_04 target to 7.88e19
PG5 argon puff moved earlier (start at 0.3 s, still 60 ms)
Load at 26-Jun-2012 10:29:53.00

plasma, full length
startup looks ok

Jun 26 2012 10:59:11:263AM 1120626008 Earl Marmar nl_04 target to 9.0 e19
Load at 26-Jun-2012 10:29:53.00

plasma, disrupt in flattop, 1.2 s (brick?)
hesitation in startup, hards

Jun 26 2012 11:24:41:503AM 1120626009 Earl Marmar locked mode
import segment 3 from 1120615009 into segment 3
turn off segment 2, turn on segment 3
Load at 26-Jun-2012 11:05:33.00

plasma, full length
no argon puff

Jun 26 2012 11:35:42:733AM 1120626010 Earl Marmar locked mode
load from 1120615009
import segment 1 from 1120626009 into segment 1
Load at 26-Jun-2012 11:23:05.00

plasma, disrupt early in rampdown
large impurity event around 1 second

Jun 26 2012 11:46:42:367AM 1120626011 Earl Marmar nitrogen seeding
enable B side lower (PG1)
load from 1120615027
import segment 1 from model into segment 1
move argon puff 100 ms earlier (start at 0.3)
Load at 26-Jun-2012 11:37:26.00

plasma, full length
early hards

Jun 26 2012 11:48:40:487AM 1120626012 Earl Marmar reduce nitrogen (to 60 V from 70, same pulse length)
Load at 26-Jun-2012 11:46:38.00

Jun 26 2012 12:28:55:810PM 1120626013 Earl Marmar reduce nitrogen (to 55 V from 60, same pulse length)
nl_04 target to 8.53e19
Load at 26-Jun-2012 12:03:56.00

plasma, early disrupt, brick

Jun 26 2012 12:38:26:920PM 1120626014 Earl Marmar no dpcs changes

plasma, full length

Jun 26 2012 12:38:35:460PM 1120626015 Earl Marmar no dpcs changes

Jun 26 2012 01:07:42:413PM 1120626016 Earl Marmar load from 1120626011
Load at 26-Jun-2012 12:47:15.00

fizzle

Jun 26 2012 01:32:33:793PM 1120626017 Earl Marmar EF4 10 A less negative prior to t=0 (now -1290 A)
Load at 26-Jun-2012 13:06:16.00

plasma, bouncy startup, early hards
disrupt 1.05 s

Jun 26 2012 01:35:48:793PM 1120626018 Earl Marmar switching to MP703 Commissioning of CECE
load from 1120607008 (including startup, non-cryopump)
pump out B-side lower (was N2) and refill with 1 PSI argon, enabled
disable H-bottom
Load at 26-Jun-2012 13:27:04.00

fizzle

Jun 26 2012 01:58:58:263PM 1120626019 Earl Marmar reduce prefill puff to 22 ms (from 26)
reduce early PG3
EF4 offset to -1290 A (from -1270)
Load at 26-Jun-2012 13:40:46.00

plasma, full length

Jun 26 2012 02:12:19:483PM 1120626020 Earl Marmar Ip to 1.0 MA
Load at 26-Jun-2012 13:58:13.00

plasma
locked-mode 1.26 s
disrupt 1.31 s

Jun 26 2012 02:28:25:260PM 1120626021 Earl Marmar Ip to 0.9 MA
Load at 26-Jun-2012 14:17:01.00

locks earlier (density undershoot around time of diversion)
disrupt 0.94 s

Jun 26 2012 02:39:05:357PM 1120626022 Earl Marmar nl_04 target to 5e19
Load at 26-Jun-2012 14:26:49.00

fizzle

Jun 26 2012 02:56:04:670PM 1120626023 Earl Marmar EF4 current to -1300 A (from -1290 A) prior to t=0
start TF rampdown at 1.5 s (instead of 1.6)
Load at 26-Jun-2012 14:37:40.00

plasma, full length

Jun 26 2012 03:10:12:800PM 1120626024 Earl Marmar TF current to -147.79 kA
Load at 26-Jun-2012 14:37:40.00
plasma, full length
small hesitation in startup

Jun 26 2012 03:21:42:623PM 1120626025 Earl Marmar TF current to -153.03 kA
Load at 26-Jun-2012 15:09:19.00

plasma, nearly full length
startup looks ok

Jun 26 2012 03:46:46:717PM 1120626026 Earl Marmar nl_04 target to 7.2e19
Load at 26-Jun-2012 15:20:19.00
power supply dud, no TF

Jun 26 2012 03:57:02:400PM 1120626027 Earl Marmar nl_04 target still 7.2e19
TF current to 150.0 kA
Load at 26-Jun-2012 15:39:26.00

plasma, nearly full length
some hards

Jun 26 2012 04:09:33:370PM 1120626028 Earl Marmar nl_04 target 8.2e19
Load at 26-Jun-2012 15:54:38.00

plasma, nearly full length
startup ok, no hards

Jun 26 2012 04:26:39:317PM 1120626029 Earl Marmar locked mode shot
load from 1120626010
import segment 1 from model into segment 1
disable B-side lower (argon)
enable H-bottom (argon)
Load at 26-Jun-2012 16:13:32.00

plasma, nearly full length
locks around 0.67s through flattop

Jun 26 2012 04:42:46:000PM 1120626030 Earl Marmar load from 1120626023
import segment 1 from model into segment 1
disable H-bottom
enable B-side lower
Load at 26-Jun-2012 16:23:11.00

fizzle
fields and gas look ok, early breakdown, maybe a tiny bounce

Jun 26 2012 05:00:22:450PM 1120626031 Earl Marmar no addtional dpcs changes

plasma
some hesitation in startup
disrupt early in rampdown

Jun 26 2012 05:12:07:260PM 1120626032 Earl Marmar reduce prefill puff by 1 msec (now 21 msec)
Load at 26-Jun-2012 16:57:44.00

plasma, nearly full length

end of run

Engineering Operator Comments

Shot Time Type Status Comment

1 09:04:32:383AM Plasma Ok

2 09:19:31:080AM Plasma Ok

3 09:35:34:610AM Plasma Ok

4 09:49:04:967AM Plasma Ok

5 10:02:41:110AM Plasma Ok

6 10:17:51:167AM Plasma Ok

7 10:31:29:190AM Plasma Ok

8 10:49:46:480AM Plasma Ok

9 11:09:34:333AM Plasma Ok

10 11:23:54:207AM Plasma Ok

11 11:39:55:463AM Plasma Ok

12 11:56:09:320AM Plasma Ok

13 12:12:17:277PM Plasma Ok

14 12:25:29:157PM Plasma Ok

15 12:40:29:933PM Plasma Ok

16 12:58:29:030PM Plasma Ok

17 01:13:23:280PM Plasma Ok

18 01:30:20:390PM Plasma Ok

19 01:45:28:457PM Plasma Ok

20 01:59:33:147PM Plasma Ok

21 02:17:27:680PM Plasma Ok

22 02:31:24:607PM Plasma Ok

23 02:44:39:937PM Plasma Ok

24 02:59:07:580PM Plasma Ok

25 03:16:06:107PM Plasma Ok

26 03:32:43:280PM Plasma Bad TF did not fire

27 03:45:55:817PM Plasma Ok

28 04:00:58:133PM Plasma Ok

29 04:17:02:643PM Plasma Ok

30 04:34:05:987PM Plasma Ok

31 04:47:55:360PM Plasma Ok

32 05:01:52:267PM Plasma Ok

System Availability

Jun 26 2012 09:04:12:050AM

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 yes Jun 15 2012 05:02:46:313PM (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 yes Jun 15 2012 05:02:31:550PM (dekow) 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 On 1120608, the high frequency channels: 112, 140 and the variable, have been disconnected for some troubleshooting. All other channels are connected Jun 14 2012 11:28:59:603AM (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 26 2012 09:11:46:627AM	1120626001	Paul Ennever	PCI Set to 9 degrees CCW. Start with Part 1 of session leader plan: Repeat Shot 1120615006 (nl04=0.55) with mask 9 degrees CCW (upper portion of plasma) Result: No PCI and no H-Bottom Density and equilibrium are good Next: Repeat with PCI and Argon
Jun 26 2012 09:23:22:417AM	1120626002	Paul Ennever	PCI Set to 9 degrees CCW. Request: Repeat Shot 1120615006 (nl04=0.55) with mask 9 degrees CCW (upper portion of plasma) Result: Fizzle Next: Repeat
Jun 26 2012 09:42:56:197AM	1120626003	Paul Ennever	PCI Set to 9 degrees CCW. Request: Repeat Shot 1120615006 (nl04=0.55) with mask 9 degrees CCW (upper portion of plasma) Result: Fizzle Next: Repeat
Jun 26 2012 09:52:37:510AM	1120626004	Paul Ennever	PCI Set to 9 degrees CCW. Request: Repeat Shot 1120615006 (nl04=0.55) with mask 9 degrees CCW (upper portion of plasma) Result: Fizzle Next: Repeat
Jun 26 2012 10:09:53:030AM	1120626005	Paul Ennever	PCI Set to 9 degrees CCW. Request: Repeat Shot 1120615006 (nl04=0.55) with mask 9 degrees CCW (upper portion of plasma) Result: Good repeat shot Next: Move on to Part 2: Repeat shot 1120615005 (nl04=0.65, but same Bt as shot 5 from today)
Jun 26 2012 10:24:41:247AM	1120626006	Paul Ennever	PCI Set to 9 degrees CCW. Request: Repeat Shot 1120615005 (nl04=0.65) with mask 9 degrees CCW (upper portion of plasma) Result: Good repeat shot Next: Move on to Part 3: Repeat shot 1120615029 (nl04=0.73)
Jun 26 2012 11:11:20:683AM	1120626007	Paul Ennever	PCI Set to 9 degrees CCW. Request: Repeat Shot 1120615029 (nl04=0.73) with mask 9 degrees CCW (upper portion of plasma) Result: Good repeat shot Next: Move on to Part 4: Repeat shot 1120615028 (nl04=0.82)
Jun 26 2012 10:58:15:273AM	1120626008	Paul Ennever	PCI Set to 9 degrees CCW. Request: Repeat Shot 1120615028 (nl04=0.82) with mask 9 degrees CCW (upper portion of plasma) Result: Disrupted at 1.2 seconds, but ran long enough to be useful Next: Move on to Part 0: Locked Mode
Jun 26 2012 11:20:09:037AM	1120626009	Paul Ennever	PCI Set to 9 degrees CCW. Request: Repeat Shot 1120615009: Locked Mode Result: Locked mode, but no argon Next: Repeat
Jun 26 2012 11:30:58:013AM	1120626010	Paul Ennever	PCI Set to 9 degrees CCW. Request: Repeat Shot 1120615009: Locked Mode Result: Good Locked mode, almost dies at ~1 second Next: Move on to Part 5: Repeat Shot 1120615027 (nl04=0.8, 70V on PG1)
Jun 26 2012 11:48:57:540AM	1120626011	Paul Ennever	PCI Set to 9 degrees CCW. Request: Repeat Shot 1120615026: nl04 = 0.8, 60V on PG1 Result: Great repeat: same ne, same prad, same reversal Next: Move on to Part 6: Repeat Shot 1120615026 (nl04=0.8, 60V on PG1)
Jun 26 2012 12:12:38:543PM	1120626012	Paul Ennever	PCI Set to 9 degrees CCW. Request: Repeat Shot 1120615026: nl04 = 0.8, 60V on PG1 Result: Great repeat: same ne, same prad, same reversal Next: Move on to Part 7: Repeat Shot 1120615025 (nl04=0.75, 55V on PG1)
Jun 26 2012 12:32:08:363PM	1120626014	Paul Ennever	PCI Set to 9 degrees CCW. Request: Repeat Shot 1120615025: nl04 = 0.75, 55V on PG1 Result: Shot ran and was good repeat of reference shot Next: Repeat but switch mask to 9 degrees CW
Jun 26 2012 12:54:11:933PM	1120626015	Paul Ennever	PCI Set to 9 degrees CW. Request: Repeat Shot 1120615025: nl04 = 0.75, 55V on PG1 Result: Shot ran Next: Repeat shot 11 from today with mask at 9 degrees CW
Jun 26 2012 01:02:14:640PM	1120626016	Paul Ennever	PCI Set to 9 degrees CW. Request: Repeat Shot 11: nl04 = 0.8, 70V on PG1 Result: Fizzle Next: Repeat
Jun 26 2012 01:43:01:823PM	1120626017	Paul Ennever	PCI Set to 9 degrees CW. Request: Repeat Shot 11: nl04 = 0.8, 70V on PG1 Result: Plasma Disrupted a little after 1.0s, but there was enough flat top to get good data Next: Finished
Jun 26 2012 01:32:44:927PM	1120626018	Choongki Sung	The shot plan is changed. Part 3 will be do first from shot 18, and then part 2 and part 1 will be done. The reference shot for part 3 will be 1120607008.
Jun 26 2012 01:39:14:300PM	1120626018	Choongki Sung	request : nl04 ~ 0.42, Bt=5.4T and Ip=0.8MA LOC ohmic plasma result : fizzle Next : repeat
Jun 26 2012 01:58:43:157PM	1120626019	Choongki Sung	request : nl04 ~ 0.42, Bt=5.4T and Ip=0.8MA LOC ohmic plasma result : LOC ohmic plasma, but slightly high density, near the boundary between LOC and SOC. Fluctuations between ch1 and ch2 looks weak. request : increase plasma current 1.0 MA
Jun 26 2012 02:16:58:727PM	1120626020	Choongki Sung	request : nl04 ~ 0.42, Bt=5.4T and Ip=1.0MA LOC ohmic plasma result : disrupted at on flattop (might be due to locked mode ?) request : reduce the plasma current to 0.9MA to prevent locked mode
Jun 26 2012 02:26:47:350PM	1120626021	Choongki Sung	request : nl04 ~ 0.42, Bt=5.4T and Ip=0.9MA LOC ohmic plasma result : disrupted due to locked mode again request : increase density(nl04) to 0.5e20 (m^-2)
Jun 26 2012 02:54:44:587PM	1120626023	Choongki Sung	request : nl04 ~ 0.5, Bt=5.4T and Ip=0.9MA LOC ohmic plasma result : good steady shot. Fluctuations are observed. next : B field will be changed to 5.36T
Jun 26 2012 03:07:42:727PM	1120626024	Choongki Sung	request : nl04 ~ 0.5, Bt=5.36T and Ip=0.9MA LOC ohmic plasma result : Good shot, fluctuations were weak between ch1 &2, but strong between ch3 & 4 next : Do one more LOC shot Bt=5.55T
Jun 26 2012 03:20:41:107PM	1120626025	Choongki Sung	request : nl04 ~ 0.5, Bt=5.55T and Ip=0.9MA LOC ohmic plasma result : Steady shot, stronger fluctuations from ch1 and 2 as expected. next : Move to SOC region. Increase density, nl04 to 0.7
Jun 26 2012 03:37:57:363PM	1120626026	Choongki Sung	request : Start part 2. nl04 ~ 0.7, Bt=5.55T and Ip=0.9MA SOC ohmic plasma result : no TF next : change B field to the one in shot 23
Jun 26 2012 03:55:16:033PM	1120626027	Choongki Sung	request : nl04 ~ 0.7, Bt=5.44T and Ip=0.9MA SOC ohmic plasma result : rotatin reversal shot. next : Increase nl04 from 0.7 to 0.8
Jun 26 2012 04:12:56:127PM	1120626028	Choongki Sung	request : nl04 ~ 0.8, Bt=5.44T and Ip=0.9MA SOC ohmic plasma result : Good SOC plasma. No fluctuations from ch1 and 2 next : Locked mode for Hirex calibration
Jun 26 2012 04:22:04:910PM	1120626029	Choongki Sung	request : Locked mode (reference shot : 1120626010) result : Good locked mode next : Repeat shot 23 with 1MW ICRF power
Jun 26 2012 04:37:34:987PM	1120626030	Choongki Sung	request : nl04 ~ 0.5, Bt=5.4T and Ip=0.9MA, 1MW ICRF power result : fizzle next : Try again !
Jun 26 2012 04:56:20:720PM	1120626031	Choongki Sung	request : nl04 ~ 0.5, Bt=5.4T and Ip=0.9MA, 1MW ICRF power result : 0.5MW ICRF power plasma next : Try 1MW ICRF power
Jun 26 2012 05:26:56:170PM	1120626032	Choongki Sung	request : nl04 ~ 0.5, Bt=5.4T and Ip=0.9MA, 1MW ICRF power result : 1MW ICRF plasma, fluctuations becomes bigger than shot 23, 31 next : end of run

Physics Operator Comments
Jun 26 2012 09:15:15:587AM	1120626001	Earl Marmar	load from 1120615006 (cryopump startup) TF current to -150kA in segment 2 plasma, small bounce in startup disrupt in rampdown (700 kA)
Jun 26 2012 09:26:31:030AM	1120626002	Earl Marmar	TF PLC start to -1.1 s (from -1.0) for polarimetry enable argon (H-bottom) fizzle, almost no current rise B_R may be slightly negative
Jun 26 2012 09:45:30:863AM	1120626003	Earl Marmar	B_R offset to +0.0015 (from +0.001) Load at 26-Jun-2012 09:25:33.00 fizzle
Jun 26 2012 10:02:51:497AM	1120626004	Earl Marmar	prefill puff to 45 ms (from 49) Load at 26-Jun-2012 09:44:52.00 fizzle a bit of current rise this time very early hards (with little current)
Jun 26 2012 10:09:14:903AM	1120626005	Earl Marmar	reduce PG3 puff around t=0 Load at 26-Jun-2012 09:54:43.00 plasma, full length startup looks ok
Jun 26 2012 10:31:30:840AM	1120626006	Earl Marmar	increase argon puff (PG5) to 60 ms (from 50) nl_04 target to 7.04e19 Load at 26-Jun-2012 10:16:55.00 plasma, full length some early hards B_R now a bit positive at t=0
Jun 26 2012 10:45:24:827AM	1120626007	Earl Marmar	nl_04 target to 7.88e19 PG5 argon puff moved earlier (start at 0.3 s, still 60 ms) Load at 26-Jun-2012 10:29:53.00 plasma, full length startup looks ok
Jun 26 2012 10:59:11:263AM	1120626008	Earl Marmar	nl_04 target to 9.0 e19 Load at 26-Jun-2012 10:29:53.00 plasma, disrupt in flattop, 1.2 s (brick?) hesitation in startup, hards
Jun 26 2012 11:24:41:503AM	1120626009	Earl Marmar	locked mode import segment 3 from 1120615009 into segment 3 turn off segment 2, turn on segment 3 Load at 26-Jun-2012 11:05:33.00 plasma, full length no argon puff
Jun 26 2012 11:35:42:733AM	1120626010	Earl Marmar	locked mode load from 1120615009 import segment 1 from 1120626009 into segment 1 Load at 26-Jun-2012 11:23:05.00 plasma, disrupt early in rampdown large impurity event around 1 second
Jun 26 2012 11:46:42:367AM	1120626011	Earl Marmar	nitrogen seeding enable B side lower (PG1) load from 1120615027 import segment 1 from model into segment 1 move argon puff 100 ms earlier (start at 0.3) Load at 26-Jun-2012 11:37:26.00 plasma, full length early hards
Jun 26 2012 11:48:40:487AM	1120626012	Earl Marmar	reduce nitrogen (to 60 V from 70, same pulse length) Load at 26-Jun-2012 11:46:38.00
Jun 26 2012 12:28:55:810PM	1120626013	Earl Marmar	reduce nitrogen (to 55 V from 60, same pulse length) nl_04 target to 8.53e19 Load at 26-Jun-2012 12:03:56.00 plasma, early disrupt, brick
Jun 26 2012 12:38:26:920PM	1120626014	Earl Marmar	no dpcs changes plasma, full length
Jun 26 2012 12:38:35:460PM	1120626015	Earl Marmar	no dpcs changes
Jun 26 2012 01:07:42:413PM	1120626016	Earl Marmar	load from 1120626011 Load at 26-Jun-2012 12:47:15.00 fizzle
Jun 26 2012 01:32:33:793PM	1120626017	Earl Marmar	EF4 10 A less negative prior to t=0 (now -1290 A) Load at 26-Jun-2012 13:06:16.00 plasma, bouncy startup, early hards disrupt 1.05 s
Jun 26 2012 01:35:48:793PM	1120626018	Earl Marmar	switching to MP703 Commissioning of CECE load from 1120607008 (including startup, non-cryopump) pump out B-side lower (was N2) and refill with 1 PSI argon, enabled disable H-bottom Load at 26-Jun-2012 13:27:04.00 fizzle
Jun 26 2012 01:58:58:263PM	1120626019	Earl Marmar	reduce prefill puff to 22 ms (from 26) reduce early PG3 EF4 offset to -1290 A (from -1270) Load at 26-Jun-2012 13:40:46.00 plasma, full length
Jun 26 2012 02:12:19:483PM	1120626020	Earl Marmar	Ip to 1.0 MA Load at 26-Jun-2012 13:58:13.00 plasma locked-mode 1.26 s disrupt 1.31 s
Jun 26 2012 02:28:25:260PM	1120626021	Earl Marmar	Ip to 0.9 MA Load at 26-Jun-2012 14:17:01.00 locks earlier (density undershoot around time of diversion) disrupt 0.94 s
Jun 26 2012 02:39:05:357PM	1120626022	Earl Marmar	nl_04 target to 5e19 Load at 26-Jun-2012 14:26:49.00 fizzle
Jun 26 2012 02:56:04:670PM	1120626023	Earl Marmar	EF4 current to -1300 A (from -1290 A) prior to t=0 start TF rampdown at 1.5 s (instead of 1.6) Load at 26-Jun-2012 14:37:40.00 plasma, full length
Jun 26 2012 03:10:12:800PM	1120626024	Earl Marmar	TF current to -147.79 kA Load at 26-Jun-2012 14:37:40.00 plasma, full length small hesitation in startup
Jun 26 2012 03:21:42:623PM	1120626025	Earl Marmar	TF current to -153.03 kA Load at 26-Jun-2012 15:09:19.00 plasma, nearly full length startup looks ok
Jun 26 2012 03:46:46:717PM	1120626026	Earl Marmar	nl_04 target to 7.2e19 Load at 26-Jun-2012 15:20:19.00 power supply dud, no TF
Jun 26 2012 03:57:02:400PM	1120626027	Earl Marmar	nl_04 target still 7.2e19 TF current to 150.0 kA Load at 26-Jun-2012 15:39:26.00 plasma, nearly full length some hards
Jun 26 2012 04:09:33:370PM	1120626028	Earl Marmar	nl_04 target 8.2e19 Load at 26-Jun-2012 15:54:38.00 plasma, nearly full length startup ok, no hards
Jun 26 2012 04:26:39:317PM	1120626029	Earl Marmar	locked mode shot load from 1120626010 import segment 1 from model into segment 1 disable B-side lower (argon) enable H-bottom (argon) Load at 26-Jun-2012 16:13:32.00 plasma, nearly full length locks around 0.67s through flattop
Jun 26 2012 04:42:46:000PM	1120626030	Earl Marmar	load from 1120626023 import segment 1 from model into segment 1 disable H-bottom enable B-side lower Load at 26-Jun-2012 16:23:11.00 fizzle fields and gas look ok, early breakdown, maybe a tiny bounce
Jun 26 2012 05:00:22:450PM	1120626031	Earl Marmar	no addtional dpcs changes plasma some hesitation in startup disrupt early in rampdown
Jun 26 2012 05:12:07:260PM	1120626032	Earl Marmar	reduce prefill puff by 1 msec (now 21 msec) Load at 26-Jun-2012 16:57:44.00 plasma, nearly full length end of run

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	09:04:32:383AM	Plasma	Ok
2	09:19:31:080AM	Plasma	Ok
3	09:35:34:610AM	Plasma	Ok
4	09:49:04:967AM	Plasma	Ok
5	10:02:41:110AM	Plasma	Ok
6	10:17:51:167AM	Plasma	Ok
7	10:31:29:190AM	Plasma	Ok
8	10:49:46:480AM	Plasma	Ok
9	11:09:34:333AM	Plasma	Ok
10	11:23:54:207AM	Plasma	Ok
11	11:39:55:463AM	Plasma	Ok
12	11:56:09:320AM	Plasma	Ok
13	12:12:17:277PM	Plasma	Ok
14	12:25:29:157PM	Plasma	Ok
15	12:40:29:933PM	Plasma	Ok
16	12:58:29:030PM	Plasma	Ok
17	01:13:23:280PM	Plasma	Ok
18	01:30:20:390PM	Plasma	Ok
19	01:45:28:457PM	Plasma	Ok
20	01:59:33:147PM	Plasma	Ok
21	02:17:27:680PM	Plasma	Ok
22	02:31:24:607PM	Plasma	Ok
23	02:44:39:937PM	Plasma	Ok
24	02:59:07:580PM	Plasma	Ok
25	03:16:06:107PM	Plasma	Ok
26	03:32:43:280PM	Plasma	Bad	TF did not fire
27	03:45:55:817PM	Plasma	Ok
28	04:00:58:133PM	Plasma	Ok
29	04:17:02:643PM	Plasma	Ok
30	04:34:05:987PM	Plasma	Ok
31	04:47:55:360PM	Plasma	Ok
32	05:01:52:267PM	Plasma	Ok