Alcator C-Mod Run 1120917 Information

Miniproposals

Miniproposal: 680

Date Filed: 11/29/2011

Title: Reduction of core turbulence and transport across the L-I transition

First Author: Anne White

Session Leader: Anne White (shots 1-33)

Session Leader: Nathan Howard (shots 16-23)

Operators
Session leader(s):	Anne White,Nathan Howard
Physics operator(s):	Greg Wallace
Engineering operator(s):	Andy Pfeiffer,Bill Cochran,Bill Byford

Engineering Operator Run Comment
MP 680 L-I transition studies : changes in core/edge turbulence in L-mod

Session Leader Plans

Entered: Sep 14 2012 04:21:13:723PM

Author: Anne White

Session Leader Plan / Shot Plan:

MP 680 L-I transition studies : changes in core/edge turbulence in L-mode and I-mode

******************************* Background ***************************

The overall goal of this experiment is to study changes in core transport and turbulence (core and edge) that occur across the L-I transition and to document as completely as possible the differences in turbulence/transport in the L-mode core and edge compare to I-mode. Past measurements at C-Mod have indicated that core and edge turbulence evolve differently prior to the L-I transition, with changes in the core turbulence preceding changes in edge turbulence. The coupling between core and edge turbulence/transport will be investigated in this experiment in L-mode , I-mode and across the L-I transition.

Specifically, we will obtain new data from the 8-channel tunable CECE system (provides first ever local, quantitative mesurements of turbulent fluctuations in the core of C-Mod plasmas) simultaneously with new HIREX data (allowing for rotation, Er and LBO with the same crystal) and CXRS and GPI data (to gather information of edge turbulence and edge electric field). This will provide us with a very complete set of Er profiles and turbulent fluctuations, covering the core to the edge in L-mode and I-mode plasmas, and across the L-I transition. This data set will be used to constrain turbulent models of transport in unprecedented detail.

******************************* Run Plan ***************************

Shape (reference shot): LSN 1120914029. Also look at this shot for insight on better ne control compared to morning shots. Is limiter heating looks to be an issue, then try a shape like 1120907028, which was tweaked to avoid this.

Targets:
Bt = 5.45 T
nl04 = 0.7
Ip = 1.1 MA

Gas Setup: Argon for Hirex (standard), Neon for seeding. NINJA -- YES

Required diagnostics: TS, GPC, HIREX, 8 channel CECE, fluctuation reflectometer, Edge CXRS gas puff, GPI puff, LBO, Fast TCI, PCI

Desired diagnostics: FRCECE, DNB (MSE and CXRS)

The experiment is divided into two parts, with each part conducted in one half day of a full run day.

Part 1: Turbulence and transport in steady L-mode compared to I-mode

Goal is obtain quantitative profiles of Te-tilde/Te over range 0.6 < r/a < 0.95 in L-mode and I-mode, along with LBO data, and full ne, Te profiles and rotation and Er profiles from HIREX and CXRS needed for detailed GK validation studies.

Part 2: Temporal changes in core and edge turbulence across L-I and I-L transitions

Goal is obtain measurements of relative changes of core ne-tilde and Te-tilde/Te in the region 0.6 < r/a < 0.8 across L-I transitions and across I-L transitions. Full ne, Te profiles and rotation and Er profiles from HIREX and CXRS needed for detailed GK validation studies. High time resolution on HIREX across transition is desired.

**************************** Shot Plan *********************************

Part 1: Obtain steady L-mode and I-mode target plasmas with CECE/HIREX and CXRS profile data for TRANSP/GYRO modeling (9-14 shots)

1. Run a basic L-mode plasma (nl04 = 0.7, Bt = 5.45 T, Ip = 1.1 MA) with 1.5 MW ICRF RF power on steady at t = 0.5 sec, off at 1.5 sec. Inject LBO 2-3 times, assess quality of HIREX data with simultaneous LBO. Assess quality of ne, Te profile data. Assess CECE data quality, radial location. (1-2 shots)

2. Run a basic I-mode plasma (nl04 = 0.7, Bt = 5.45 T, Ip = 1.1 MA) with 3.5 MW ICRF. RF power on steady at t = 0.5 sec, off at 1.5 sec. Inject LBO 2-3 times, assess quality of HIREX data with simultaneous LBO. Assess quality of ne, Te profile data. Assess CECE data quality, radial location. (1-2 shots)

3. If we are happy with our L-mode and I-mode targets from step 1 and 2, then take a locked mode shot for HIREX calibration (1-2 shots)

4. Repeat steady L-mode target for full CECE radial profile scan, densely covering region 0.6 < r/a < 0.95 Puff for CXRS and GPI at end of each shot, e.g. around 1.3 or 1.4 seconds. These shots will be repeats (same density same current). BUT we will scan Bt slightly (e.g. 5.4 < Bt < 5.5) to fill in CECE profile (3-4 shots).

5. Repeat steady I-mode target for full CECE radial profile scan, densely covering region 0.6 < r/a < 0.95 Puff for CXRS and GPI at end of each shot, e.g. around 1.3 or 1.4 seconds.These shots will be repeats (same density same current). BUT we will scan Bt slightly (e.g. 5.4 < Bt < 5.5) to fill in CECE profile (3-4 shots).

Part 2: Obtain L-I transition at t ~ 1.0 second with steady density across transition. These shots also include a back transition I-L near 1.3 seconds, where we relax the steady density constraint. For forward L-I transition: Document fast changes (10s of ms) in relative amplitude of Te-tilde in core with CECE and relative change of ne-tilde in core with reflectometer. The back transition I-L is documented with CXRS and GPI data on every shot. On at least 1 trophy shot, we will also obtain CXRS and GPI data across forward L-I transition. (7-14 shots)

1. Develop an L-I transition plasma (nl04 = 0.7, Bt = 5.45 T, Ip = 1.1 MA) with 1.5 MW ICRF starting at t = 0.5 seconds, increasing to 3.5 MW in a clean step at 1.0 seconds. The RF power is decreased to 1 MW at 1.35 seconds to promote back transition I-L. RF power is off at 1.5 seconds. (4-8 shots)

a. CXRS and GPI puff on at 1.3 seconds (or best time selected by diagnosticians to capture before/after the transition) to gather data across back I-L transition.
b. No LBO.
c. HIREX on with best time resolution possible.
d. CECE and Reflectometer are set to measure innermost radial position when possible, as near to r/a ~ 0.6 as possible, during time range of interest (t = 0.8-1.5 sec.
e. Density and Bt chosen to optimize LI transition as well as refl and CECE measurement positions.

2. Repeat the trophy shot (a clean L-I transition that had steady density across the transition. But now puff for CXRS and GPI at 0.95 seconds to capture the forward L-I transition (2-4 shots)

3. Locked mode calibration shot as needed (1-2 shots)

Physics Operators Plans

Entered: Sep 16 2012 06:36:33:363PM

Author: Greg Wallace

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

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

Power systems as on: 1120914029 (adjust to nl04 = 0.7, Bt = 5.45 T, Ip = 1.1 MA)

Acoil: -Dtop +Dbot +Jtop -Jbot; Hybrid enabled (reversed field configuration)

Gas Setup:
fill B-Top with 6 psi D2 Hybrid enabled (PG4)
fill B-side lower with 2 psi Ne 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 H-bottom with 1 psi Ar Hybrid enabled(PG5)
leave B-div as is Hybrid DISABLED (PG6)
leave H-div as is Hybrid DISABLED (PG7)
fill NINJA F-port with 10 psi D2 DISABLED
fill NINJA C-port with 10 psi D2 DISABLED

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

Torvac gatevalve toggle (yes/no): no

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

Vessel temperature: 35/35/35

Required diagnostics: TS, GPC, HIREX, 8 channel CECE, fluctuation reflectometer, Edge CXRS gas puff, GPI puff, LBO, Fast TCI, PCI

Desired diagnostics: FRCECE, DNB (MSE and CXRS)

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

Session Leader Summaries

Entered: Nov 20 2012 02:09:07:550PM

Author: Anne White

Overall, we made good progress in the run plan. Thank you to everyone for your help in making the run successful!!

Summary:

We did access I-mode today (according to change in edge Te and reduced core / edge turbulence with no change in density), but did not see a clear edge feature of the WCM in many cases. These were not high performance I-modes, but the changes in the turbulence and rotation profiles appear consistent with "standard I-mode" behavior.

Part 1 of run plan was successful, with profiles of Te-tilde/Te collected over the range 0.65 < rho < 0.90 in L-mode and I-mode. We have good overlap of CXRS data and HIREX data for the steady L and I-mode data set.

Part 2 of run plan was marginal, with some "weak" L-I mode transitions (increase in edge Te, reduction of broadband fluctuations, but now WCM or large increase in stored energy) documented with Refl and CECE in time. Last two shots had CXRS and GPI data puff across these forward transitions.

Some details:

Started off slowly due to problem with ratiomatic that we unable to fix in the end, but pushed through without it.

RF had some tripping in morning shots, but seemed to improve with Ne seeding.

There were some issues with the Ar puff for HIREX, and on several shots we had less Ar than expected, even when using standard pressure/timing in Hbot and Bside lower. Check HIREX entries for more information

In terms of accessing steady I-modes, and accessing I-mode even transiently, we experienced difficulty. Given our current and density, it was expected that 2.5-3.0 MW would have been enough to push above the L-I threshold. Interestingly, we appeared to be marginal in many cases or below the threshold, in contrast to several I-mode runs earlier in this Rev Bt phase of the campaign. The data set from today will be valuable for the L-I threshold studies.

Note that shot 31 is interesting (according to Dr. Nathan Howard). This shot had high power but was clearly L-mode; so it provides a good point of comparison with the I-modes. Shot 31 has similar fluctuation levels to the 1.5 MW L-mode case, but at I-mode levels of Prf and with similar rotation. This indicates that it is not just an increase in Prf and rotation that causes the reduction in fluctuation levels observed in I-mode. Shot 31 also has good Ar levels for HIREX analysis.

Physics Operator Summaries

Entered: Sep 17 2012 05:10:22:277PM

Author: Greg Wallace

PO Summary for 1120917

Both ratiomatic filaments burned out, and consequently there was no ratiomatic data available for adjusting the prefill pressures. Despite this, startup was quite reliable today. There were a few fizzles early on and after a locked mode disruption. Shots 10-13 were dedicated to getting a good locked mode calibration for HIREX, which never really materialized.

We had some trouble getting into I-mode due to a lack of ICRF power (no E-port), but got good data nevertheless. The plasmas were disrupting regularly in rampdown at around 700 kA when the Ne seeding was on. With the Ne off the plasmas ramped down all the way.

There was some difficulty with the Ar puff not getting into the plasma from H-bottom. We tried purging and refilling the plenum several times to no avail. Finally we added some Ar to the Ne in B-side lower and that seemed to get both in to the plasma.

Session Leader Comments

Sep 17 2012 09:48:00:183AM 1120917002 Anne White Shot 2

plan:
establish baseline L-mode (steady) with HIREX, CXRS and CECE data.
load shot 1120914029 - (reduce Bt to ~ 5.42 T), nl04 = 0.7, Ip = 1.1 MA, RF 1.5 MW from 0.5-1.5 sec. Ninja puff on at 1.3 sec for steady state profile data. 1 psi Ar in B side lower for HIREX. Plan LBO at 0.8, 1.0, 1.2 sec. Inner gap scan from 1.4-1.5 sec for LFS CXRS.

result:
shot did not run.

next shot:
try to establish L-mode baseline.

Sep 17 2012 09:47:42:690AM 1120917003 Anne White Shot 3

plan:
establish baseline L-mode (steady) with HIREX, CXRS and CECE data.
load shot 1120914029 - (reduce Bt to ~ 5.42 T), nl04 = 0.7, Ip = 1.1 MA, RF 1.5 MW from 0.5-1.5 sec. Ninja puff on at 1.3 sec for steady state CXRS profile data. GP puff on at 1.3 sec as well. 1 psi Ar in B side lower for HIREX. Plan LBO at 0.8, 1.0, 1.2 sec. Inner gap scan from 1.4-1.5 sec for LFS CXRS.

result:
fizzle

next shot:
try again for L-mode baseline.

Sep 17 2012 10:29:12:887AM 1120917004 Anne White Shot 4

plan:
establish baseline L-mode (steady) with HIREX, CXRS and CECE data.
load shot 1120914029 - (reduce Bt to ~ 5.42 T), nl04 = 0.7, Ip = 1.1 MA, RF 1.5 MW from 0.5-1.5 sec. Ninja puff on at 1.3 sec for steady state CXRS profile data. GP puff on at 1.3 sec as well. 1 psi Ar in B side lower for HIREX. Plan LBO at 0.8, 1.0, 1.2 sec. Inner gap scan from 1.4-1.5 sec for LFS CXRS.

result:
shot ran, good L-mode baseline.

next shot:
try for I-mode baseline.

Sep 17 2012 10:33:08:797AM 1120917005 Anne White Shot 5

plan:
establish baseline I-mode (steady) with HIREX, CXRS and CECE data.
target nl04 = 0.7, Ip = 1.1 MA, RF 1.5 MW from 0.5-1.5 sec. Ninja puff on at 1.3 sec for steady state CXRS profile data. GP puff on at 1.3 sec as well. 1 psi Ar in B side lower for HIREX. Plan LBO at 0.8, 1.0, 1.2 sec. Inner gap scan from 1.4-1.5 sec for LFS CXRS.

result:
shot ran, but RF was not steady.

next shot:
repeat, try for steady RF and I-mode baseline.

Sep 17 2012 10:52:26:093AM 1120917006 Anne White Shot 6

plan:
establish baseline I-mode (steady) with HIREX, CXRS and CECE data.
target nl04 = 0.7, Ip = 1.1 MA, RF 1.5 MW from 0.5-1.5 sec. Ninja puff on at 1.3 sec for steady state CXRS profile data. GP puff on at 1.3 sec as well. 1 psi Ar in B side lower for HIREX. Plan LBO at 0.8, 1.0, 1.2 sec. Inner gap scan from 1.4-1.5 sec for LFS CXRS.

result:
shot ran, but RF was not steady, looks like we were getting I-mode like
features in edge turbulence, and a pedestal in Te at t= 0.8 sec

next shot:
repeat, try for I-mode baseline. Start RF earlier at 0.4 sec, with slower ramp, to see if we can steady out the density. Also, reduce outer gap by 0.5 cm.

Sep 17 2012 11:07:42:300AM 1120917007 Anne White Shot 7

plan:
establish baseline I-mode (steady) with HIREX, CXRS and CECE data.
target nl04 = 0.7, Ip = 1.1 MA, RF 1.5 MW from 0.5-1.5 sec. Ninja puff on at 1.3 sec for steady state CXRS profile data. GP puff on at 1.3 sec as well. 1 psi Ar in B side lower for HIREX. Plan LBO at 0.8, 1.0, 1.2 sec. Inner gap scan from 1.4-1.5 sec for LFS CXRS. Outer gap was reduced 0.5 cm.

result:
shot ran, but RF was not steady, looks like we were getting I-mode with just 3.0 MW during RF ramp. some limiter heating is noted.

next shot:
repeat, try for I-mode baseline. Keep RF on at 0.4 sec. Reduce power to 3.0 MW.

Sep 17 2012 11:38:15:730AM 1120917008 Anne White Shot 8

plan:
establish baseline I-mode (steady) with HIREX, CXRS and CECE data.
target nl04 = 0.7, Ip = 1.1 MA, RF 3.0 MW from 0.5-1.5 sec. Ninja puff on at 1.3 sec for steady state CXRS profile data. GP puff on at 1.3 sec as well. 1 psi Ar in B side lower for HIREX. Plan LBO at 0.8, 1.0, 1.2 sec. Inner gap scan from 1.4-1.5 sec for LFS CXRS. Outer gap was reduced 0.5 cm.

result:
shot ran, but RF was not steady, does not look like we accessed I-mode at this combination of density and power.

next shot:
repeat, try for I-mode baseline. Keep RF on at 0.4 sec, power 3.0 MW.
Increase nl04 request to 0.8, since shot 6 had cleanest evidence of I-mode (though transient) at a higher density.

Sep 17 2012 11:37:16:287AM 1120917009 Anne White Shot 9

plan:
establish baseline I-mode (steady) with HIREX, CXRS and CECE data.
target nl04 = 0.8, Ip = 1.1 MA, RF 3.0 MW from 0.5-1.5 sec. Ninja puff on at 1.3 sec for steady state CXRS profile data. GP puff on at 1.3 sec as well. 1 psi Ar in B side lower for HIREX. Plan LBO at 0.8, 1.0, 1.2 sec. Inner gap scan from 1.4-1.5 sec for LFS CXRS. Outer gap was reduced 0.5 cm.

result:
shot ran, but RF was not steady, does look like we accessed I-mode transiently based on edge Te increases around 0.8 sec.

next shot:

reduce nl04 request to 0.75.

no LBO in next shot (noted perturbation of edge fluctuations, becoming more L-mode like at time of injection)

Sep 17 2012 11:45:30:350AM 1120917010 Anne White Shot 10

plan:
establish baseline I-mode (steady) with HIREX, CXRS and CECE data.
target nl04 = 0.75, Ip = 1.1 MA, RF 3.0 MW from 0.5-1.5 sec.

No LBO.

Ninja puff on at 1.3 sec for steady state CXRS profile data.
GPI puff on at 1.3 sec as well.
Inner gap scan from 1.4-1.5 sec for LFS CXRS.

result:
shot ran. some large injections. "good" Imode phases later in time
as density came back to target after injections.

next shot:
take a locked mode calibration shot.
resent plenums to prepare for Ar and Neon puffs.

Sep 17 2012 11:57:42:203AM 1120917011 Anne White Shot 11

plan:
locked mode calibration shot

result:

did not lock

next shot:

locked mode calibration shot

Sep 17 2012 12:11:13:497PM 1120917012 Anne White Shot 12

plan:
locked mode calibration shot

result:

fizzlw

next shot:

locked mode calibration shot

Sep 17 2012 12:27:40:773PM 1120917013 Anne White Shot 13

plan:
locked mode calibration shot

result:
ran, then disrupt at 0.7 sec. acceptable.

next shot:

load in shot 10 -- I-mode target shot.

nl04 = 0.75, Ip = 1.1 MA, BT = 5.47 T

No LBO

Yes to GPI and CXRS Ninja.

Yes to Ar for HIREX

Sep 17 2012 12:37:27:423PM 1120917014 Anne White Shot 14

plan:
steady I-mode target.

load in shot 10 -- I-mode target shot.
nl04 = 0.75, Ip = 1.1 MA, BT = 5.47 T
No LBO
Yes to GPI and CXRS Ninja.
Yes to Ar for HIREX

result:
disruption. after t = 0.6 sec density is below target from shot 10.

next shot:
repeat, increased nl04 request to 0.8, attempt Imode target

Sep 17 2012 12:45:37:390PM 1120917015 Anne White Shot 15

plan:
steady I-mode target, with increased nl04 request compared to shot 14

load in shot 10 -- I-mode target shot.
nl04 = 0.8, Ip = 1.1 MA, BT = 5.47 T
No LBO
Yes to GPI and CXRS Ninja.
Yes to Ar for HIREX

result:
shot ran. but RF still not steady

next shot:
repeat, make changes to gas to allow neon seeding (for RF)

Sep 17 2012 01:40:38:647PM 1120917016 Anne White Shot 16

plan:
steady I-mode target

load in shot 10 -- I-mode target shot.
nl04 = 0.8, Ip = 1.1 MA, BT = 5.47 T
No LBO
Yes to GPI and CXRS Ninja.
Yes to Ar for HIREX

result:
shot ran, density looks very nice, etc.. but RF still not steady

next shot:
repeat, try to get good rf

Sep 17 2012 01:43:52:440PM 1120917017 Anne White Shot 17

plan:
steady I-mode target

nl04 = 0.8, Ip = 1.1 MA, BT = 5.42 T
No LBO
Yes to GPI and CXRS Ninja.
Yes to Ar for HIREX

result:
Early disruption

next shot:
repeat, try to get good rf and no disruption

Sep 17 2012 01:49:13:503PM 1120917018 Anne White Shot 18

plan:
steady I-mode target

nl04 = 0.8, Ip = 1.1 MA, BT = 5.42 T
No LBO
Yes to GPI and CXRS Ninja.
Yes to Ar for HIREX

result:
Shot was overall good except still no steady RF.

next shot:
repeat, try to get good rf...again

Sep 17 2012 01:50:27:990PM 1120917019 Anne White Shot 19

plan:
steady I-mode target

nl04 = 0.8, Ip = 1.1 MA, BT = 5.42 T
No LBO
Yes to GPI and CXRS Ninja.
Yes to Ar for HIREX

result:
Shot was overall good except again except, as before, not steady rf.

next shot:
repeat, they say they can run E port with not FFT. We will try this.

Sep 17 2012 02:09:54:117PM 1120917020 Anne White Shot 20

plan:
steady I-mode target

nl04 = 0.8, Ip = 1.1 MA, BT = 5.42 T
No LBO
Yes to GPI and CXRS Ninja.
Yes to Ar for HIREX

result:
Shot was overall good , I mode at about 1.1 sec. some rf trips.

next shot:
try to put a step in rf at .8 sec. See if that can get cleaner rf.

Sep 17 2012 02:32:07:260PM 1120917021 Anne White Shot 21

plan:
steady I-mode target

nl04 = 0.8, Ip = 1.1 MA, BT = 5.42 T
No LBO
Yes to GPI and CXRS Ninja.
Yes to Ar for HIREX

result:
Shot was overall good , I mode at about 1.05 sec. Rf wasnt bad at all. Close to the threshold.

next shot:
Try to reduce neon and argon. And slightly higher RF demand.

Sep 17 2012 02:41:49:080PM 1120917022 Anne White Shot 22

plan:
steady I-mode target

nl04 = 0.8, Ip = 1.1 MA, BT = 5.42 T
No LBO
Yes to GPI and CXRS Ninja.
Yes to Ar for HIREX

result:
Rf was too trippy at 3MW demand.

next shot:
Basically a repeat of 21 with small rf step moved to .7.

Sep 17 2012 02:54:15:750PM 1120917023 Anne White Shot 23

plan:
steady I-mode target

result:
Rf was ok, I-mode looked ok from Teped point of view but WCM was
not as clear as in shot 21

next shot:
begin L-mode Bt scan for filling in fluctuation profile data.
same shot, Bt = 5.5T with RF request at 1.5 MW steady.

Sep 17 2012 02:57:21:167PM 1120917024 Anne White Shot 24

plan:
steady L-mode target

result:
shot 1 of L-mode Bt scan for filling in fluctuation profile data.
same shot, Bt = 5.5T with RF request at 1.5 MW steady.

next shot:
shot 2 of L-mode Bt scan for filling in fluctuation profile data.
same shot, Bt = 5.34T with RF request at 1.5 MW steady.

Sep 17 2012 03:10:17:360PM 1120917025 Anne White Shot 25

plan:
steady L-mode target

result:
shot 2 of L-mode Bt scan for filling in fluctuation profile data.
same shot, Bt = 5.34T with RF request at 1.5 MW steady.

next shot:
shot 3 of L-mode Bt scan for filling in fluctuation profile data.
same shot, Bt = 5.42T with RF request at 1.5 MW steady.

Sep 17 2012 03:31:41:673PM 1120917026 Anne White Shot 26

plan:
steady L-mode target

result:
good shot.

shot 3 of L-mode Bt scan for filling in fluctuation profile data.
Bt = 5.42T with RF request at 1.5 MW steady.

next shot:
repeat steady I-mode target (shot 23, shot 1 of I-mode scan) but at higher field.

shot 2 of I-mode Bt scan for filling in fluctuation profile data.
Bt = 5.5 T with RF request up to 2.8 MW (same RF request as in shot 23)

Sep 17 2012 03:51:14:317PM 1120917027 Anne White Shot 27

plan:
steady I-mode target

result:
good shot . This is shot 2 of I-mode Bt scan for filling in fluctuation profile data. Bt = 5.5 T with RF request up to 2.8 MW (same RF request as in shot 23)

next shot:
repeat steady I-mode target but at higher field.

shot 3 of I-mode Bt scan for filling in fluctuation profile data.
Bt = 5.58 T with RF request up to 2.8 MW (same RF request as in shot 23 and 27)

Sep 17 2012 04:05:33:367PM 1120917028 Anne White Shot 28

plan:
steady I-mode target

result:
ok shot, but goes in and out of I-mode.

next shot:
attempt to time L-I transition for middle of shot with RF power step from 2.0 MW to 3.2 MW, at Bt = 5.57 T

Sep 17 2012 04:10:52:780PM 1120917029 Anne White Shot 29

plan:
L-I transition target with RF power step at 0.8 sec: 2.0--> 3.2 MW

result:
ok shot, but looks like it went into I-mode around 0.9 sec, then back to L-mode,
then I mode again at 1.14 sec

next shot:

Sep 17 2012 04:21:21:370PM 1120917029 Anne White Shot 29

plan:
L-I transition target with RF power step at 0.8 sec: 2.0--> 3.2 MW

result:
ok shot, but looks like it went into I-mode around 0.9 sec, then back to L-mode,
then I mode again at 1.14 sec

next shot:
given max power RF at ~ 2.7 MW, we'll drop Ip to 1.0 MW
and step RF from 2.0 MW to MAX at 0.8 sec and then down to 2.0 MW at 1.3 sec.
try to catch forward and back transition at lower current. Also, no NINJA puff this shot (so no CXRS, no GPI this shot. Also, no HIREX...)

Sep 17 2012 04:33:20:423PM 1120917030 Anne White Shot 30

plan:
L-I transition target with RF power step at 0.8 sec: 2.0--> 2.7 MW.
Reduce Ip to 1.0 MA. keel nl04 request the same. Bt = 5.58 T

result:
no LI transition.

next shot:

go back to 1.1 MA, and RF request as in shot 29.
No NINJA on this shot.

Sep 17 2012 04:55:11:703PM 1120917031 Anne White Shot 31

plan:
L-I transition target with RF power step at 0.8 sec: 2.0--> 2.7 MW.
I p = 1.1 MA. keel nl04 request the same. Bt = 5.58 T

result:
shot ran

next shot:
repeat shot with same RF request. No HIREX, no AR puff.
NINJA gas will hit at t = 0.95 sec.

Sep 17 2012 04:54:52:590PM 1120917032 Anne White Shot 32

plan:
L-I transition target with RF power step at 0.8 sec: 2.0--> 2.7 MW.
Ip = 1.1 MA. keep nl04 request the same. Bt = 5.58 T

result:
shot ran, with some weak transition to lower edge (refl 75 GHz) fluc levels around t = 0.95 seconds

next shot:
move NINJA puff earlier in time. repeat shot with same RF request. No HIREX, no AR puff. NINJA gas will hit at t = 0.90 sec.

Sep 17 2012 05:11:58:417PM 1120917033 Anne White Shot 33

Last shot of day

plan:
L-I transition target with RF power step at 0.8 sec: 2.0--> 2.7 MW.
I p = 1.1 MA. Bt = 5.58 T

result:
shot ran, increase in edge Te around 0.8 sec. but no clear WCM.
NINJA puff hit at t = 0.85 sec this shot.

Physics Operator Comments

Sep 17 2012 10:01:43:467AM 1120917002 Greg Wallace Changes: Load 1120907028. Reduce PG4 pre-puff to 20 ms (non-cryo). Seg PG1 puff to 0.3-0.4 s at 100 V. Move late inner gap scan to start at 1.375 s instead of 1.40 s. Change TF current to 151924 A (5.42 T).

Result: Fizzle. Late breakdown. No ratiomatic data, but looks like the gas is off. PG4 pre-puff didn't take. Must not have hit the "apply" button from the seg 1 "all Vs" screen?

Next shot: Change PG4 puff to 20 ms (for real this time).

Sep 17 2012 10:01:06:653AM 1120917003 Greg Wallace Changes: Change PG4 puff to 20 ms (for real this time).

Result: Fizzle. H-alpha flash is big and not late, stays high for about 6 ms. Lots of CIII around 12 ms. Bz0 is a little high?

Next shot: Decrease IC_EF4 from 1320 to 1300 to correct Bz0 for startup. I hope this is the right direction in rev B.

Sep 17 2012 10:20:48:640AM 1120917004 Greg Wallace Changes: Decrease IC_EF4 from 1320 to 1300 to correct Bz0 for startup. I hope this is the right direction in rev B.

Result: Plasma! Startup still looks a little sick. Lots of H-alpha and CIII between 10 and 20 ms. Ip hesitates around that time, too.

Next shot: Eliminate RCUR sweep between 1.2 and 1.5 s. Move CLEARIN sweep from 1.375 to 1.35 s and increase magnitude from 4 mm to 6 mm. Increase PG1 Ar puff from .3-.4 s to .3-.45 s.

Sep 17 2012 10:34:25:560AM 1120917005 Greg Wallace Changes: Eliminate RCUR sweep between 1.2 and 1.5 s. Move CLEARIN sweep from 1.375 to 1.35 s and increase magnitude from 4 mm to 6 mm. Increase PG1 Ar puff from .3-.4 s to .3-.45 s.

Result: Plasma. Startup looks much better now.

Next shot: Reduce PG1 puff to 100 ms. Increase PG1 (B side lower) fill to 2psi Ar.

Sep 17 2012 10:54:01:553AM 1120917006 Greg Wallace Changes: Reduce PG1 puff to 100 ms. Increase PG1 (B side lower) fill to 2psi Ar.

Result: Plasma. Still lots of CIII. Brief I-mode?

Next shot: Start ICRF at 0.4 with slower ramp to keep density more steady. Increase RCUR by 2.5 mm (0.656 to 0.6585) to improve ICRF coupling.

Sep 17 2012 11:06:46:287AM 1120917007 Greg Wallace Changes: Start ICRF at 0.4 with slower ramp to keep density more steady. Increase RCUR by 2.5 mm (0.656 to 0.6585) to improve ICRF coupling.

Result: Plasma. Disruption in rampdown at 500 kA. CIII spike at 15 ms has gone down.

Next shot: No DPCS changes.

Sep 17 2012 11:20:01:227AM 1120917008 Greg Wallace Changes: No DPCS changes.

Result: Plasma. Disruption in rampdown at 500 kA. Right at the target density.

Next shot: Increase nl_04 demand to 0.8e20.

Sep 17 2012 11:36:08:887AM 1120917009 Greg Wallace Changes: Increase nl_04 demand to 0.8e20.

Result: Plasma.

Next shot: Decrease nl_04 demand to 7.5e19.

Sep 17 2012 11:48:43:007AM 1120917010 Greg Wallace Changes: Decrease nl_04 demand to 7.5e19.

Result: Plasma. Disruption in rampdown at 600 kA. Mo injections between 0.6 and 0.9.

Next shot: Locked mode. Turn off seg 2. Import seg 4 from 1120914017. Turn on seg 4.

Sep 17 2012 12:11:31:463PM 1120917012 Greg Wallace Changes: Decrease proportional gain on nl_04 from 4 to 2.75.

Result: Post disruption fizzle?

Next shot: No DPCS changes.

Sep 17 2012 12:26:15:333PM 1120917013 Greg Wallace Changes: No DPCS changes.

Result: Plasma. Disruption, but did not lock.

Next shot: Go back to conditions from shot 10. Turn on seg 2, turn off seg 4.

Sep 17 2012 12:37:07:433PM 1120917014 Greg Wallace Changes: Go back to conditions from shot 10. Turn on seg 2, turn off seg 4.

Result: Plasma. Disruption at 0.75 s.

Next shot: Increase nl_04 demand to 0.8e20.

Sep 17 2012 12:53:11:410PM 1120917015 Greg Wallace Changes: Increase nl_04 demand to 0.8e20.

Result: Plasma. Disruption in rampdown at 600 kA. No injections but ICRF was faulting.

Next shot: Pump B-side lower (pg1) and fill with 2 psi Ne. Increase Ar pressure in H-bottom to 1 psi. Seg PG1 demand to 50 V from 0.35-0.55 s. Set PG5 demand to 100 V from 0.3-0.45 s.

Sep 17 2012 01:05:18:250PM 1120917016 Greg Wallace Changes: Pump B-side lower (pg1) and fill with 2 psi Ne. Increase Ar pressure in H-bottom to 1 psi. Seg PG1 demand to 50 V from 0.35-0.55 s. Set PG5 demand to 100 V from 0.3-0.45 s.

Result: Plasma. Good density control. J4 had problems.

Next shot: Repeat with better RF.

Sep 17 2012 01:28:28:027PM 1120917017 Greg Wallace Changes: Repeat with better RF.

Result: Plasma. Disruption at 0.46 s. Mo injection.

Next shot: Repeat.

Sep 17 2012 01:37:14:730PM 1120917018 Greg Wallace Changes: Repeat.

Result: Plasma. Disruption in rampdown at 700 kA.

Next shot: Reduce PG5 Ar puff from 150 to 120 ms. Increase Ne puff demand from 50 V to 70 V.

Sep 17 2012 01:51:18:903PM 1120917019 Greg Wallace Changes: Reduce PG5 Ar puff from 150 to 120 ms. Increase Ne puff demand from 50 V to 70 V.

Result: Plasma. A little bit of Ip hesitation in startup at 10 ms, associated with a CIII spike. Will keep an eye on it.

Next shot: Repeat. No DPCS changes.

Sep 17 2012 02:07:19:137PM 1120917019 Greg Wallace Changes: Repeat. No DPCS changes.

Result: Plasma. Disruption in rampdown at 750 kA.

Next shot: No DPCS changes.

Sep 17 2012 02:25:22:187PM 1120917021 Greg Wallace Changes: No DPCS changes.

Result: Plasma.

Next shot: Turn Ne puff to 60 V and Ar puff to 90 V.

Sep 17 2012 02:32:46:507PM 1120917022 Greg Wallace Changes: Turn Ne puff to 60 V and Ar puff to 90 V.

Result: Plasma. Disruption in rampdown at 600 kA.

Next shot: Reduce Ar puff to 70 V and increase Ne puff to 70 V. Decrease nl_04 demand to 7.7e19.

Sep 17 2012 02:50:08:697PM 1120917023 Greg Wallace Changes: Reduce Ar puff to 70 V and increase Ne puff to 70 V. Decrease nl_04 demand to 7.7e19.

Result: Plasma. Startup is looking better again. Disruption in rampdown at 800 kA.

Next shot: Increase TF to 5.5 T (154024 A).

Sep 17 2012 03:09:08:743PM 1120917024 Greg Wallace Changes: Increase TF to 5.5 T (154024 A).

Result: Plasma.

Next shot: Decrease TF to 5.34 T (149679 A). Increase Ar puff to 90 V.

Sep 17 2012 03:21:25:627PM 1120917025 Greg Wallace Changes: Decrease TF to 5.34 T (149679 A). Increase Ar puff to 90 V.

Result: Plasma.

Next shot: Increase TF to 5.42 T as in shot 23 (151921 A). Increase Ar puff (PG5) back to 100 V.

Sep 17 2012 03:39:36:213PM 1120917026 Greg Wallace Changes: Increase TF to 5.42 T as in shot 23 (151921 A). Increase Ar puff (PG5) back to 100 V.

Result: Plasma.

Next shot: Pump H-bottom and refill with 1.5 psi Ar. Increase TF to 5.5 T (154024 A).

Sep 17 2012 03:49:33:010PM 1120917027 Greg Wallace Changes: Pump H-bottom and refill with 1.5 psi Ar. Increase TF to 5.5 T (154024 A).

Result: Plasma.

Next shot: Increase TF to 5.58 T (156264 A).

Sep 17 2012 04:02:10:647PM 1120917028 Greg Wallace Changes: Increase TF to 5.58 T (156264 A).

Result: Plasma.

Next shot: Add some Ar to B-side lower. No DPCS changes.

Sep 17 2012 04:21:22:250PM 1120917029 Greg Wallace Changes: Add some Ar to B-side lower. No DPCS changes.

Result: Plasma.

Next shot: Reduce Ip to 1.0 MA. Continue fiddling with B-side lower gas fill.

Sep 17 2012 04:31:40:560PM 1120917030 Greg Wallace Changes: Reduce Ip to 1.0 MA. Continue fiddling with B-side lower gas fill.

Result: Plasma.

Next shot: Back to Ip = 1.1 MA.

Sep 17 2012 04:46:25:260PM 1120917031 Greg Wallace Changes: Back to Ip = 1.1 MA.

Result: Plasma. Ar is back. L-mode...

Next shot: Reduce B-side lower (PG1) puff 50 V. Also disable B-side lower.

Sep 17 2012 04:55:45:407PM 1120917032 Greg Wallace Changes: Reduce B-side lower (PG1) puff 50 V. Also disable B-side lower.

Result: Plasma. Ramped down all the way without the Ne and Ar.

Next shot: No DPCS changes.

Sep 17 2012 05:03:48:110PM 1120917033 Greg Wallace Changes: No DPCS changes.

Result: Plasma through rampdown. Last shot of the day.

Engineering Operator Comments

Shot Time Type Status Comment

1 08:19:09:090AM Test Ok data cycle test

2 09:16:26:540AM Plasma Ok

3 09:43:20:567AM Plasma Ok

4 10:08:18:443AM Plasma Ok

5 10:23:25:860AM Plasma Ok

6 10:37:41:680AM Plasma Ok

7 10:54:26:380AM Plasma Ok

8 11:07:44:477AM Plasma Ok

9 11:22:12:797AM Plasma Ok

10 11:36:26:177AM Plasma Ok

11 11:49:36:187AM Plasma Ok

12 12:02:43:580PM Plasma Ok

13 12:15:53:340PM Plasma Ok

14 12:28:16:787PM Plasma Ok

15 12:40:49:020PM Plasma Ok

16 12:59:41:960PM Plasma Ok

17 01:12:15:673PM Plasma Ok

18 01:24:49:630PM Plasma Ok

19 01:38:34:533PM Plasma Ok

20 01:51:16:240PM Plasma Ok

21 02:08:51:703PM Plasma Ok

22 02:22:49:657PM Plasma Ok

23 02:36:23:847PM Plasma Ok

24 02:51:53:223PM Plasma Ok

25 03:05:08:947PM Plasma Ok

26 03:19:27:217PM Plasma Ok

27 03:35:31:273PM Plasma Ok

28 03:50:29:540PM Plasma Ok

29 04:04:42:620PM Plasma Ok

30 04:19:06:857PM Plasma Ok

31 04:33:20:277PM Plasma Ok

32 04:47:12:173PM Plasma Ok

33 05:01:20:823PM Plasma Ok

System Availability

Sep 17 2012 08:18:49:493AM

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 yes The system is currently operational for Te tilde measurement. Talk to Choongki about the current configuration Jul 3 2012 04:38:00:317PM (nthoward) Anne White Correlation ECE nthoward,sck83,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 yes LH is now available for plasma operation up to ~900 kW net power. Jul 3 2012 02:50:00:693PM (wallaceg) 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 no Midplane Lyman-a not functioning. New B-PORT Lyman (BPLY) still being debugged. Jul 12 2012 08:52:28:233AM (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 under vacuum but is not run on a day-to-day basis. Can be requested if desired. LoWEUS has taken over as the primary Mo monitor. Jul 12 2012 08:53:14:937AM (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. Jul 10 2012 07:08:06:883PM (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 yes SSS is under vacuum and fully available. Jul 3 2012 02:46:59:753PM (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 both lasers, density calibration ongoing. Jul 19 2012 10:20:09:220AM (jrwalk) Jerry Hughes Core Thomson scattering jrwalk,jwhughes,yma
TS - Edge yes Operating with both lasers, density calibration ongoing. Jul 19 2012 10:20:28:323AM (jrwalk) 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
Sep 17 2012 09:48:00:183AM	1120917002	Anne White	Shot 2 plan: establish baseline L-mode (steady) with HIREX, CXRS and CECE data. load shot 1120914029 - (reduce Bt to ~ 5.42 T), nl04 = 0.7, Ip = 1.1 MA, RF 1.5 MW from 0.5-1.5 sec. Ninja puff on at 1.3 sec for steady state profile data. 1 psi Ar in B side lower for HIREX. Plan LBO at 0.8, 1.0, 1.2 sec. Inner gap scan from 1.4-1.5 sec for LFS CXRS. result: shot did not run. next shot: try to establish L-mode baseline.
Sep 17 2012 09:47:42:690AM	1120917003	Anne White	Shot 3 plan: establish baseline L-mode (steady) with HIREX, CXRS and CECE data. load shot 1120914029 - (reduce Bt to ~ 5.42 T), nl04 = 0.7, Ip = 1.1 MA, RF 1.5 MW from 0.5-1.5 sec. Ninja puff on at 1.3 sec for steady state CXRS profile data. GP puff on at 1.3 sec as well. 1 psi Ar in B side lower for HIREX. Plan LBO at 0.8, 1.0, 1.2 sec. Inner gap scan from 1.4-1.5 sec for LFS CXRS. result: fizzle next shot: try again for L-mode baseline.
Sep 17 2012 10:29:12:887AM	1120917004	Anne White	Shot 4 plan: establish baseline L-mode (steady) with HIREX, CXRS and CECE data. load shot 1120914029 - (reduce Bt to ~ 5.42 T), nl04 = 0.7, Ip = 1.1 MA, RF 1.5 MW from 0.5-1.5 sec. Ninja puff on at 1.3 sec for steady state CXRS profile data. GP puff on at 1.3 sec as well. 1 psi Ar in B side lower for HIREX. Plan LBO at 0.8, 1.0, 1.2 sec. Inner gap scan from 1.4-1.5 sec for LFS CXRS. result: shot ran, good L-mode baseline. next shot: try for I-mode baseline.
Sep 17 2012 10:33:08:797AM	1120917005	Anne White	Shot 5 plan: establish baseline I-mode (steady) with HIREX, CXRS and CECE data. target nl04 = 0.7, Ip = 1.1 MA, RF 1.5 MW from 0.5-1.5 sec. Ninja puff on at 1.3 sec for steady state CXRS profile data. GP puff on at 1.3 sec as well. 1 psi Ar in B side lower for HIREX. Plan LBO at 0.8, 1.0, 1.2 sec. Inner gap scan from 1.4-1.5 sec for LFS CXRS. result: shot ran, but RF was not steady. next shot: repeat, try for steady RF and I-mode baseline.
Sep 17 2012 10:52:26:093AM	1120917006	Anne White	Shot 6 plan: establish baseline I-mode (steady) with HIREX, CXRS and CECE data. target nl04 = 0.7, Ip = 1.1 MA, RF 1.5 MW from 0.5-1.5 sec. Ninja puff on at 1.3 sec for steady state CXRS profile data. GP puff on at 1.3 sec as well. 1 psi Ar in B side lower for HIREX. Plan LBO at 0.8, 1.0, 1.2 sec. Inner gap scan from 1.4-1.5 sec for LFS CXRS. result: shot ran, but RF was not steady, looks like we were getting I-mode like features in edge turbulence, and a pedestal in Te at t= 0.8 sec next shot: repeat, try for I-mode baseline. Start RF earlier at 0.4 sec, with slower ramp, to see if we can steady out the density. Also, reduce outer gap by 0.5 cm.
Sep 17 2012 11:07:42:300AM	1120917007	Anne White	Shot 7 plan: establish baseline I-mode (steady) with HIREX, CXRS and CECE data. target nl04 = 0.7, Ip = 1.1 MA, RF 1.5 MW from 0.5-1.5 sec. Ninja puff on at 1.3 sec for steady state CXRS profile data. GP puff on at 1.3 sec as well. 1 psi Ar in B side lower for HIREX. Plan LBO at 0.8, 1.0, 1.2 sec. Inner gap scan from 1.4-1.5 sec for LFS CXRS. Outer gap was reduced 0.5 cm. result: shot ran, but RF was not steady, looks like we were getting I-mode with just 3.0 MW during RF ramp. some limiter heating is noted. next shot: repeat, try for I-mode baseline. Keep RF on at 0.4 sec. Reduce power to 3.0 MW.
Sep 17 2012 11:38:15:730AM	1120917008	Anne White	Shot 8 plan: establish baseline I-mode (steady) with HIREX, CXRS and CECE data. target nl04 = 0.7, Ip = 1.1 MA, RF 3.0 MW from 0.5-1.5 sec. Ninja puff on at 1.3 sec for steady state CXRS profile data. GP puff on at 1.3 sec as well. 1 psi Ar in B side lower for HIREX. Plan LBO at 0.8, 1.0, 1.2 sec. Inner gap scan from 1.4-1.5 sec for LFS CXRS. Outer gap was reduced 0.5 cm. result: shot ran, but RF was not steady, does not look like we accessed I-mode at this combination of density and power. next shot: repeat, try for I-mode baseline. Keep RF on at 0.4 sec, power 3.0 MW. Increase nl04 request to 0.8, since shot 6 had cleanest evidence of I-mode (though transient) at a higher density.
Sep 17 2012 11:37:16:287AM	1120917009	Anne White	Shot 9 plan: establish baseline I-mode (steady) with HIREX, CXRS and CECE data. target nl04 = 0.8, Ip = 1.1 MA, RF 3.0 MW from 0.5-1.5 sec. Ninja puff on at 1.3 sec for steady state CXRS profile data. GP puff on at 1.3 sec as well. 1 psi Ar in B side lower for HIREX. Plan LBO at 0.8, 1.0, 1.2 sec. Inner gap scan from 1.4-1.5 sec for LFS CXRS. Outer gap was reduced 0.5 cm. result: shot ran, but RF was not steady, does look like we accessed I-mode transiently based on edge Te increases around 0.8 sec. next shot: reduce nl04 request to 0.75. no LBO in next shot (noted perturbation of edge fluctuations, becoming more L-mode like at time of injection)
Sep 17 2012 11:45:30:350AM	1120917010	Anne White	Shot 10 plan: establish baseline I-mode (steady) with HIREX, CXRS and CECE data. target nl04 = 0.75, Ip = 1.1 MA, RF 3.0 MW from 0.5-1.5 sec. No LBO. Ninja puff on at 1.3 sec for steady state CXRS profile data. GPI puff on at 1.3 sec as well. Inner gap scan from 1.4-1.5 sec for LFS CXRS. result: shot ran. some large injections. "good" Imode phases later in time as density came back to target after injections. next shot: take a locked mode calibration shot. resent plenums to prepare for Ar and Neon puffs.
Sep 17 2012 11:57:42:203AM	1120917011	Anne White	Shot 11 plan: locked mode calibration shot result: did not lock next shot: locked mode calibration shot
Sep 17 2012 12:11:13:497PM	1120917012	Anne White	Shot 12 plan: locked mode calibration shot result: fizzlw next shot: locked mode calibration shot
Sep 17 2012 12:27:40:773PM	1120917013	Anne White	Shot 13 plan: locked mode calibration shot result: ran, then disrupt at 0.7 sec. acceptable. next shot: load in shot 10 -- I-mode target shot. nl04 = 0.75, Ip = 1.1 MA, BT = 5.47 T No LBO Yes to GPI and CXRS Ninja. Yes to Ar for HIREX
Sep 17 2012 12:37:27:423PM	1120917014	Anne White	Shot 14 plan: steady I-mode target. load in shot 10 -- I-mode target shot. nl04 = 0.75, Ip = 1.1 MA, BT = 5.47 T No LBO Yes to GPI and CXRS Ninja. Yes to Ar for HIREX result: disruption. after t = 0.6 sec density is below target from shot 10. next shot: repeat, increased nl04 request to 0.8, attempt Imode target
Sep 17 2012 12:45:37:390PM	1120917015	Anne White	Shot 15 plan: steady I-mode target, with increased nl04 request compared to shot 14 load in shot 10 -- I-mode target shot. nl04 = 0.8, Ip = 1.1 MA, BT = 5.47 T No LBO Yes to GPI and CXRS Ninja. Yes to Ar for HIREX result: shot ran. but RF still not steady next shot: repeat, make changes to gas to allow neon seeding (for RF)
Sep 17 2012 01:40:38:647PM	1120917016	Anne White	Shot 16 plan: steady I-mode target load in shot 10 -- I-mode target shot. nl04 = 0.8, Ip = 1.1 MA, BT = 5.47 T No LBO Yes to GPI and CXRS Ninja. Yes to Ar for HIREX result: shot ran, density looks very nice, etc.. but RF still not steady next shot: repeat, try to get good rf
Sep 17 2012 01:43:52:440PM	1120917017	Anne White	Shot 17 plan: steady I-mode target nl04 = 0.8, Ip = 1.1 MA, BT = 5.42 T No LBO Yes to GPI and CXRS Ninja. Yes to Ar for HIREX result: Early disruption next shot: repeat, try to get good rf and no disruption
Sep 17 2012 01:49:13:503PM	1120917018	Anne White	Shot 18 plan: steady I-mode target nl04 = 0.8, Ip = 1.1 MA, BT = 5.42 T No LBO Yes to GPI and CXRS Ninja. Yes to Ar for HIREX result: Shot was overall good except still no steady RF. next shot: repeat, try to get good rf...again
Sep 17 2012 01:50:27:990PM	1120917019	Anne White	Shot 19 plan: steady I-mode target nl04 = 0.8, Ip = 1.1 MA, BT = 5.42 T No LBO Yes to GPI and CXRS Ninja. Yes to Ar for HIREX result: Shot was overall good except again except, as before, not steady rf. next shot: repeat, they say they can run E port with not FFT. We will try this.
Sep 17 2012 02:09:54:117PM	1120917020	Anne White	Shot 20 plan: steady I-mode target nl04 = 0.8, Ip = 1.1 MA, BT = 5.42 T No LBO Yes to GPI and CXRS Ninja. Yes to Ar for HIREX result: Shot was overall good , I mode at about 1.1 sec. some rf trips. next shot: try to put a step in rf at .8 sec. See if that can get cleaner rf.
Sep 17 2012 02:32:07:260PM	1120917021	Anne White	Shot 21 plan: steady I-mode target nl04 = 0.8, Ip = 1.1 MA, BT = 5.42 T No LBO Yes to GPI and CXRS Ninja. Yes to Ar for HIREX result: Shot was overall good , I mode at about 1.05 sec. Rf wasnt bad at all. Close to the threshold. next shot: Try to reduce neon and argon. And slightly higher RF demand.
Sep 17 2012 02:41:49:080PM	1120917022	Anne White	Shot 22 plan: steady I-mode target nl04 = 0.8, Ip = 1.1 MA, BT = 5.42 T No LBO Yes to GPI and CXRS Ninja. Yes to Ar for HIREX result: Rf was too trippy at 3MW demand. next shot: Basically a repeat of 21 with small rf step moved to .7.
Sep 17 2012 02:54:15:750PM	1120917023	Anne White	Shot 23 plan: steady I-mode target result: Rf was ok, I-mode looked ok from Teped point of view but WCM was not as clear as in shot 21 next shot: begin L-mode Bt scan for filling in fluctuation profile data. same shot, Bt = 5.5T with RF request at 1.5 MW steady.
Sep 17 2012 02:57:21:167PM	1120917024	Anne White	Shot 24 plan: steady L-mode target result: shot 1 of L-mode Bt scan for filling in fluctuation profile data. same shot, Bt = 5.5T with RF request at 1.5 MW steady. next shot: shot 2 of L-mode Bt scan for filling in fluctuation profile data. same shot, Bt = 5.34T with RF request at 1.5 MW steady.
Sep 17 2012 03:10:17:360PM	1120917025	Anne White	Shot 25 plan: steady L-mode target result: shot 2 of L-mode Bt scan for filling in fluctuation profile data. same shot, Bt = 5.34T with RF request at 1.5 MW steady. next shot: shot 3 of L-mode Bt scan for filling in fluctuation profile data. same shot, Bt = 5.42T with RF request at 1.5 MW steady.
Sep 17 2012 03:31:41:673PM	1120917026	Anne White	Shot 26 plan: steady L-mode target result: good shot. shot 3 of L-mode Bt scan for filling in fluctuation profile data. Bt = 5.42T with RF request at 1.5 MW steady. next shot: repeat steady I-mode target (shot 23, shot 1 of I-mode scan) but at higher field. shot 2 of I-mode Bt scan for filling in fluctuation profile data. Bt = 5.5 T with RF request up to 2.8 MW (same RF request as in shot 23)
Sep 17 2012 03:51:14:317PM	1120917027	Anne White	Shot 27 plan: steady I-mode target result: good shot . This is shot 2 of I-mode Bt scan for filling in fluctuation profile data. Bt = 5.5 T with RF request up to 2.8 MW (same RF request as in shot 23) next shot: repeat steady I-mode target but at higher field. shot 3 of I-mode Bt scan for filling in fluctuation profile data. Bt = 5.58 T with RF request up to 2.8 MW (same RF request as in shot 23 and 27)
Sep 17 2012 04:05:33:367PM	1120917028	Anne White	Shot 28 plan: steady I-mode target result: ok shot, but goes in and out of I-mode. next shot: attempt to time L-I transition for middle of shot with RF power step from 2.0 MW to 3.2 MW, at Bt = 5.57 T
Sep 17 2012 04:10:52:780PM	1120917029	Anne White	Shot 29 plan: L-I transition target with RF power step at 0.8 sec: 2.0--> 3.2 MW result: ok shot, but looks like it went into I-mode around 0.9 sec, then back to L-mode, then I mode again at 1.14 sec next shot:
Sep 17 2012 04:21:21:370PM	1120917029	Anne White	Shot 29 plan: L-I transition target with RF power step at 0.8 sec: 2.0--> 3.2 MW result: ok shot, but looks like it went into I-mode around 0.9 sec, then back to L-mode, then I mode again at 1.14 sec next shot: given max power RF at ~ 2.7 MW, we'll drop Ip to 1.0 MW and step RF from 2.0 MW to MAX at 0.8 sec and then down to 2.0 MW at 1.3 sec. try to catch forward and back transition at lower current. Also, no NINJA puff this shot (so no CXRS, no GPI this shot. Also, no HIREX...)
Sep 17 2012 04:33:20:423PM	1120917030	Anne White	Shot 30 plan: L-I transition target with RF power step at 0.8 sec: 2.0--> 2.7 MW. Reduce Ip to 1.0 MA. keel nl04 request the same. Bt = 5.58 T result: no LI transition. next shot: go back to 1.1 MA, and RF request as in shot 29. No NINJA on this shot.
Sep 17 2012 04:55:11:703PM	1120917031	Anne White	Shot 31 plan: L-I transition target with RF power step at 0.8 sec: 2.0--> 2.7 MW. I p = 1.1 MA. keel nl04 request the same. Bt = 5.58 T result: shot ran next shot: repeat shot with same RF request. No HIREX, no AR puff. NINJA gas will hit at t = 0.95 sec.
Sep 17 2012 04:54:52:590PM	1120917032	Anne White	Shot 32 plan: L-I transition target with RF power step at 0.8 sec: 2.0--> 2.7 MW. Ip = 1.1 MA. keep nl04 request the same. Bt = 5.58 T result: shot ran, with some weak transition to lower edge (refl 75 GHz) fluc levels around t = 0.95 seconds next shot: move NINJA puff earlier in time. repeat shot with same RF request. No HIREX, no AR puff. NINJA gas will hit at t = 0.90 sec.
Sep 17 2012 05:11:58:417PM	1120917033	Anne White	Shot 33 Last shot of day plan: L-I transition target with RF power step at 0.8 sec: 2.0--> 2.7 MW. I p = 1.1 MA. Bt = 5.58 T result: shot ran, increase in edge Te around 0.8 sec. but no clear WCM. NINJA puff hit at t = 0.85 sec this shot.

Physics Operator Comments
Sep 17 2012 10:01:43:467AM	1120917002	Greg Wallace	Changes: Load 1120907028. Reduce PG4 pre-puff to 20 ms (non-cryo). Seg PG1 puff to 0.3-0.4 s at 100 V. Move late inner gap scan to start at 1.375 s instead of 1.40 s. Change TF current to 151924 A (5.42 T). Result: Fizzle. Late breakdown. No ratiomatic data, but looks like the gas is off. PG4 pre-puff didn't take. Must not have hit the "apply" button from the seg 1 "all Vs" screen? Next shot: Change PG4 puff to 20 ms (for real this time).
Sep 17 2012 10:01:06:653AM	1120917003	Greg Wallace	Changes: Change PG4 puff to 20 ms (for real this time). Result: Fizzle. H-alpha flash is big and not late, stays high for about 6 ms. Lots of CIII around 12 ms. Bz0 is a little high? Next shot: Decrease IC_EF4 from 1320 to 1300 to correct Bz0 for startup. I hope this is the right direction in rev B.
Sep 17 2012 10:20:48:640AM	1120917004	Greg Wallace	Changes: Decrease IC_EF4 from 1320 to 1300 to correct Bz0 for startup. I hope this is the right direction in rev B. Result: Plasma! Startup still looks a little sick. Lots of H-alpha and CIII between 10 and 20 ms. Ip hesitates around that time, too. Next shot: Eliminate RCUR sweep between 1.2 and 1.5 s. Move CLEARIN sweep from 1.375 to 1.35 s and increase magnitude from 4 mm to 6 mm. Increase PG1 Ar puff from .3-.4 s to .3-.45 s.
Sep 17 2012 10:34:25:560AM	1120917005	Greg Wallace	Changes: Eliminate RCUR sweep between 1.2 and 1.5 s. Move CLEARIN sweep from 1.375 to 1.35 s and increase magnitude from 4 mm to 6 mm. Increase PG1 Ar puff from .3-.4 s to .3-.45 s. Result: Plasma. Startup looks much better now. Next shot: Reduce PG1 puff to 100 ms. Increase PG1 (B side lower) fill to 2psi Ar.
Sep 17 2012 10:54:01:553AM	1120917006	Greg Wallace	Changes: Reduce PG1 puff to 100 ms. Increase PG1 (B side lower) fill to 2psi Ar. Result: Plasma. Still lots of CIII. Brief I-mode? Next shot: Start ICRF at 0.4 with slower ramp to keep density more steady. Increase RCUR by 2.5 mm (0.656 to 0.6585) to improve ICRF coupling.
Sep 17 2012 11:06:46:287AM	1120917007	Greg Wallace	Changes: Start ICRF at 0.4 with slower ramp to keep density more steady. Increase RCUR by 2.5 mm (0.656 to 0.6585) to improve ICRF coupling. Result: Plasma. Disruption in rampdown at 500 kA. CIII spike at 15 ms has gone down. Next shot: No DPCS changes.
Sep 17 2012 11:20:01:227AM	1120917008	Greg Wallace	Changes: No DPCS changes. Result: Plasma. Disruption in rampdown at 500 kA. Right at the target density. Next shot: Increase nl_04 demand to 0.8e20.
Sep 17 2012 11:36:08:887AM	1120917009	Greg Wallace	Changes: Increase nl_04 demand to 0.8e20. Result: Plasma. Next shot: Decrease nl_04 demand to 7.5e19.
Sep 17 2012 11:48:43:007AM	1120917010	Greg Wallace	Changes: Decrease nl_04 demand to 7.5e19. Result: Plasma. Disruption in rampdown at 600 kA. Mo injections between 0.6 and 0.9. Next shot: Locked mode. Turn off seg 2. Import seg 4 from 1120914017. Turn on seg 4.
Sep 17 2012 12:11:31:463PM	1120917012	Greg Wallace	Changes: Decrease proportional gain on nl_04 from 4 to 2.75. Result: Post disruption fizzle? Next shot: No DPCS changes.
Sep 17 2012 12:26:15:333PM	1120917013	Greg Wallace	Changes: No DPCS changes. Result: Plasma. Disruption, but did not lock. Next shot: Go back to conditions from shot 10. Turn on seg 2, turn off seg 4.
Sep 17 2012 12:37:07:433PM	1120917014	Greg Wallace	Changes: Go back to conditions from shot 10. Turn on seg 2, turn off seg 4. Result: Plasma. Disruption at 0.75 s. Next shot: Increase nl_04 demand to 0.8e20.
Sep 17 2012 12:53:11:410PM	1120917015	Greg Wallace	Changes: Increase nl_04 demand to 0.8e20. Result: Plasma. Disruption in rampdown at 600 kA. No injections but ICRF was faulting. Next shot: Pump B-side lower (pg1) and fill with 2 psi Ne. Increase Ar pressure in H-bottom to 1 psi. Seg PG1 demand to 50 V from 0.35-0.55 s. Set PG5 demand to 100 V from 0.3-0.45 s.
Sep 17 2012 01:05:18:250PM	1120917016	Greg Wallace	Changes: Pump B-side lower (pg1) and fill with 2 psi Ne. Increase Ar pressure in H-bottom to 1 psi. Seg PG1 demand to 50 V from 0.35-0.55 s. Set PG5 demand to 100 V from 0.3-0.45 s. Result: Plasma. Good density control. J4 had problems. Next shot: Repeat with better RF.
Sep 17 2012 01:28:28:027PM	1120917017	Greg Wallace	Changes: Repeat with better RF. Result: Plasma. Disruption at 0.46 s. Mo injection. Next shot: Repeat.
Sep 17 2012 01:37:14:730PM	1120917018	Greg Wallace	Changes: Repeat. Result: Plasma. Disruption in rampdown at 700 kA. Next shot: Reduce PG5 Ar puff from 150 to 120 ms. Increase Ne puff demand from 50 V to 70 V.
Sep 17 2012 01:51:18:903PM	1120917019	Greg Wallace	Changes: Reduce PG5 Ar puff from 150 to 120 ms. Increase Ne puff demand from 50 V to 70 V. Result: Plasma. A little bit of Ip hesitation in startup at 10 ms, associated with a CIII spike. Will keep an eye on it. Next shot: Repeat. No DPCS changes.
Sep 17 2012 02:07:19:137PM	1120917019	Greg Wallace	Changes: Repeat. No DPCS changes. Result: Plasma. Disruption in rampdown at 750 kA. Next shot: No DPCS changes.
Sep 17 2012 02:25:22:187PM	1120917021	Greg Wallace	Changes: No DPCS changes. Result: Plasma. Next shot: Turn Ne puff to 60 V and Ar puff to 90 V.
Sep 17 2012 02:32:46:507PM	1120917022	Greg Wallace	Changes: Turn Ne puff to 60 V and Ar puff to 90 V. Result: Plasma. Disruption in rampdown at 600 kA. Next shot: Reduce Ar puff to 70 V and increase Ne puff to 70 V. Decrease nl_04 demand to 7.7e19.
Sep 17 2012 02:50:08:697PM	1120917023	Greg Wallace	Changes: Reduce Ar puff to 70 V and increase Ne puff to 70 V. Decrease nl_04 demand to 7.7e19. Result: Plasma. Startup is looking better again. Disruption in rampdown at 800 kA. Next shot: Increase TF to 5.5 T (154024 A).
Sep 17 2012 03:09:08:743PM	1120917024	Greg Wallace	Changes: Increase TF to 5.5 T (154024 A). Result: Plasma. Next shot: Decrease TF to 5.34 T (149679 A). Increase Ar puff to 90 V.
Sep 17 2012 03:21:25:627PM	1120917025	Greg Wallace	Changes: Decrease TF to 5.34 T (149679 A). Increase Ar puff to 90 V. Result: Plasma. Next shot: Increase TF to 5.42 T as in shot 23 (151921 A). Increase Ar puff (PG5) back to 100 V.
Sep 17 2012 03:39:36:213PM	1120917026	Greg Wallace	Changes: Increase TF to 5.42 T as in shot 23 (151921 A). Increase Ar puff (PG5) back to 100 V. Result: Plasma. Next shot: Pump H-bottom and refill with 1.5 psi Ar. Increase TF to 5.5 T (154024 A).
Sep 17 2012 03:49:33:010PM	1120917027	Greg Wallace	Changes: Pump H-bottom and refill with 1.5 psi Ar. Increase TF to 5.5 T (154024 A). Result: Plasma. Next shot: Increase TF to 5.58 T (156264 A).
Sep 17 2012 04:02:10:647PM	1120917028	Greg Wallace	Changes: Increase TF to 5.58 T (156264 A). Result: Plasma. Next shot: Add some Ar to B-side lower. No DPCS changes.
Sep 17 2012 04:21:22:250PM	1120917029	Greg Wallace	Changes: Add some Ar to B-side lower. No DPCS changes. Result: Plasma. Next shot: Reduce Ip to 1.0 MA. Continue fiddling with B-side lower gas fill.
Sep 17 2012 04:31:40:560PM	1120917030	Greg Wallace	Changes: Reduce Ip to 1.0 MA. Continue fiddling with B-side lower gas fill. Result: Plasma. Next shot: Back to Ip = 1.1 MA.
Sep 17 2012 04:46:25:260PM	1120917031	Greg Wallace	Changes: Back to Ip = 1.1 MA. Result: Plasma. Ar is back. L-mode... Next shot: Reduce B-side lower (PG1) puff 50 V. Also disable B-side lower.
Sep 17 2012 04:55:45:407PM	1120917032	Greg Wallace	Changes: Reduce B-side lower (PG1) puff 50 V. Also disable B-side lower. Result: Plasma. Ramped down all the way without the Ne and Ar. Next shot: No DPCS changes.
Sep 17 2012 05:03:48:110PM	1120917033	Greg Wallace	Changes: No DPCS changes. Result: Plasma through rampdown. Last shot of the day.

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	08:19:09:090AM	Test	Ok	data cycle test
2	09:16:26:540AM	Plasma	Ok
3	09:43:20:567AM	Plasma	Ok
4	10:08:18:443AM	Plasma	Ok
5	10:23:25:860AM	Plasma	Ok
6	10:37:41:680AM	Plasma	Ok
7	10:54:26:380AM	Plasma	Ok
8	11:07:44:477AM	Plasma	Ok
9	11:22:12:797AM	Plasma	Ok
10	11:36:26:177AM	Plasma	Ok
11	11:49:36:187AM	Plasma	Ok
12	12:02:43:580PM	Plasma	Ok
13	12:15:53:340PM	Plasma	Ok
14	12:28:16:787PM	Plasma	Ok
15	12:40:49:020PM	Plasma	Ok
16	12:59:41:960PM	Plasma	Ok
17	01:12:15:673PM	Plasma	Ok
18	01:24:49:630PM	Plasma	Ok
19	01:38:34:533PM	Plasma	Ok
20	01:51:16:240PM	Plasma	Ok
21	02:08:51:703PM	Plasma	Ok
22	02:22:49:657PM	Plasma	Ok
23	02:36:23:847PM	Plasma	Ok
24	02:51:53:223PM	Plasma	Ok
25	03:05:08:947PM	Plasma	Ok
26	03:19:27:217PM	Plasma	Ok
27	03:35:31:273PM	Plasma	Ok
28	03:50:29:540PM	Plasma	Ok
29	04:04:42:620PM	Plasma	Ok
30	04:19:06:857PM	Plasma	Ok
31	04:33:20:277PM	Plasma	Ok
32	04:47:12:173PM	Plasma	Ok
33	05:01:20:823PM	Plasma	Ok