Alcator C-Mod Run 1100317 Information

Miniproposals

Miniproposal: 535a

Date Filed: 3/5/2008

Title: Rotation inversion vs density and current, in limited and diverted L-mode plasmas

First Author: Basil Duval

Session Leader: Basil Duval (shots 1-33)

Operators
Session leader(s):	Basil Duval
Physics operator(s):	Jim Irby
Engineering operator(s):	Bill Cochran,Bill Byford,Ed Fitzgerald

Engineering Operator Run Comment
automatically entered by signon - please replace with real comment

Session Leader Plans

Entered: Mar 16 2010 05:03:12:600PM

Author: Basil Duval

Rotation reversal experiments

Low density- Suggest- ECDC He to prepare walls for low density operation

Continue #535 with #535a (previous experiments 108050201x)

Take shape from1091216029/30- Most recent example (LSN- no direct Cryo effect available)

Goal 1- Observe rotation reversal
- take density to below 0.9e20 and density ramp- (stay at 5T)
- When we get reversal, repeat 2x to get reproducibility
- Can we go up through reversal and back down using cryo-pump- Should we try USN ?
- repeat at 3T (keep qedge the same)- may need slightly lower Ne (0.7?)

Goal 2- Can we do this with limited discharge
- Move above config until CLEARLY limited- try to keep final shape the same
- Try and get the density down- I assume wall interaction will be problematic
- explore as above this configuration

Goal 3- Transition limited-diverted
- Ideally go from limited configuration with Ne below threshold-> diverted
- If not, do the same with Ne above threshold
- Try to take diverted below threshold and move onto limiter
- If not, do the same with Ne above threshold

Goal 4- q scaling
- Take Goal 1 curve and repeat with qedge 3.5, 4, 5 (Ip scan c/f TCV results)

############# Wished for diags
- CXRS (not available)- Pity-
- Edge rotation measurements (really interesting for diverted/limited
- X-ray sawteeth characteristics for all shots
- MhD characteristics for all shots
- All available bulk and edge turbulence measurements (long wavelength on PCI please)

- bpd, CMOD control room, 3/16/2010

Physics Operators Plans

Entered: Mar 17 2010 05:13:31:627PM

Author: Jim Irby

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

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

Power systems as on: 1091216030

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

Gas setup:

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

Enable gatevalves and shutters: ECE, VUV, HiREX Sr, Z-bolo

Torvac gatevalve toggle (yes/no): no

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

Vessel temperature: 35/35/35

------------------------------
ECDC Parameters
------------------------------
gas and pressure: Helium at 5e-5 Torr
sweep: 44/45/103 cm
scan: 20/120 s

Session Leader Summaries

Entered: Mar 17 2010 05:40:42:623PM

Author: Basil Duval

Summary of day

The goal of today's experiments was to check the toroidal reversal with limited and diverted configurations and to attempt to move between the configurations to observe changes

1) Reversal obtained for diverted configurations again- Shown to be reproducible
2) Reversal not really seen for limited configuration- This is probably due to the problem in achieving a low plasma density (see below)
3) Change from Counter -> Co seen between Limited and diverted configurations
4) qscan 3,3.6,4,5 confirmed scaling with plasma current. Reversed transition observed at q=3.6 operated by allowing the plasma density to drop after the initial part of the discharge-
5) Other experiments in the run plan were not attempted due to a lack of run time and most of the above experiments were curtailed in an attempt to cover the main questions within the allotted time.

Comments

Main problem was achieving low densities- Over-low density early in discharge resulted in locked modes with negligible plasma rotation (as would be expected)-
For diverted discharges we lost a LOT of the discharges with disruptions and/or locked modes- This was exacerbated by the changing machine conditioning that made it necessary to inject more prefill early in the discharges as the day progressed. Not only were many discharges lost due to these changes, but the increased early density required made the lower densities required by the limited configurations impossible and lower densities required by lower plasma current extremely tricky-

From the diagnostic viewpoint, it was necessary to compensate for a low drift in the spectrometer (Ar-senior) by performing several dedicated locked mode discharges that again interrupted the "shot flow"

Suggestions

Clearly we have observed the desired effect but were not able to reproduce all the effects that would confirm this conclusion because of the time it would take to fine-tune the plasma density and breakdown scenarios. The Bphi scan or Ip scan question remains unanswered and a low density diverted configuration was not achieved- The absence of CX measurements mean that only the core rotation was measured (as known before the experiments but a pity in any case) means that the CMOD results fall quite a bit short of what could be possible on CMOD, but PCI data was taken. (This is not yet available on TCV and could answer some of the outstanding questions)

In conclusion- All the data we finally obtained supports the previous conclusion that the toroidal velocity reversal shows all the signs of that reported from TCV- CMOD has the capacity to take this further with Bphi/IP scans and a wider range of edge diagnostics (but this would require CX measurements to obtain a complete rotation profile)- It would IMHO be extremely interesting to extend these measurements to provide further indications to the theoretical community on the parametric dependence of this effect- It would be useful to assess schemes to improve the machine conditioning and perhaps improve if possible the error field correction to avoid the early gas injection that made today's experiments so challenging.

A BIG thank you to all the people around that made CMOD run smoothly and to the diagnosticians who have only just commenced their toil-

_basil-

Physics Operator Summaries

Entered: Mar 17 2010 05:37:48:717PM

Author: Jim Irby

A combination of injections and low density locked modes caused a few early disruptions today. The early locked modes appeared around 400 ms when the density dropped dramatically. We spend a few shots filling in the "hole" using a large pg3 puff. The puff also cured the runaway problem Physop errors also lost us some shots (turning on wrong segment, not moving crowbar times, for example). When we started getting reliable plasmas we had to work to decrease the early density so that the planned density ramps could be done. Later in the run we spent several shots going from diverted to hard inner wall limited. Density rise from wall fueling was no issue after the first limited discharge. On shot 26 we went from hard limited to diverted at 0.8 s; an interesting discharge.

There were no power system problems today. We lost some data (Halpha, CIII) because of a CAMAC problem.

fizzle 01,27
plasma 02-26, 28-33

Session Leader Comments

Mar 17 2010 09:21:18:437AM 1100317001 Basil Duval Pre: Get repeat shot based on shape #1091216029 (breakdown full field- Bob's startup from yesterday)
Ar requested for the X-ray spectrometer
No density ramp requested- We're looking to get diagnostics and see what shape
we eventually get-

Post: BLIP- like being home-

Mar 17 2010 09:30:15:800AM 1100317002 Basil Duval Pre: Locked more #30 from yesterday, to calibrate X-ray spectrometer
Post: OK-

Mar 17 2010 09:47:09:057AM 1100317003 Basil Duval Pre: Shape from 1100317030- q 4->3.1, Ne ramp 0.7->1.3e20 during flat top
check Argon
Diagnostics
Post: Density ramp too fast and current ramp too slow- some data on Crystal- Good start

Mar 17 2010 10:04:27:530AM 1100317004 Basil Duval Pre: Repeat- Faster Ip ramp, target Ne ramp 0.7->1e20
Post: OK- Reversal !
However- Ne ramp started @0.9s and was really fast !

Mar 17 2010 10:18:17:177AM 1100317005 Basil Duval Pre: Repeat with ne ramp from 0.6->1.6 sec 0.6->0.7 in nl_04 units
Post: OK- Worked again- transition Co-> Counter occurs at nl_04 ~0.65

Mar 17 2010 10:29:54:480AM 1100317006 Basil Duval Pre: Repeat - prove reproducibility
Post: OK- got slower transition, but it was there

Mar 17 2010 10:49:45:050AM 1100317007 Basil Duval Pre: Faster gas ramp up to 1s, then gas cut to attempt reverse transition
Post: OK- didn't get to 0.65 before gas cut- disrupted @1.5s and looked like impurity increased dramatically ~1s maybe implying something dropping into plasma.

Mar 17 2010 11:02:08:537AM 1100317008 Basil Duval Pre: Repeat with faster initial gas ramp to get reversal before cut-
Post: OK- didn't get to transition (0.65 just reached)- ?

Mar 17 2010 11:23:54:500AM 1100317009 Basil Duval Pre: Repeat target 0.7-> 0.77 nl_04 @0.9s- Start to worry that transition is not reproducible ?
Post: BLIP- Somthing dropped in- Tungsten ?

Mar 17 2010 11:27:31:937AM 1100317010 Basil Duval Pre: Repeat-
Post: Huge influx of something @0.3s- Machine is not well- Prefill too low?

Mar 17 2010 11:40:58:677AM 1100317011 Basil Duval Pre: Repeat- increase prefill ?
Post: OK- but missing velocity reversal ?- Go back to best shot #4

Mar 17 2010 12:18:21:520PM 1100317012 Basil Duval Pre: Repeat- sho #004 (are we still in business ?)
Post: OK- Disrupt @0.6s- not getting us anywhere here ?-
Early density much lower than (from 60->100ms) #004- feed it more gas- Can we get back ?

Mar 17 2010 12:28:20:663PM 1100317013 Basil Duval Pre: Repeat-
Post: OK- Disrupt again--- locked mode?

Mar 17 2010 12:29:11:697PM 1100317014 Basil Duval Pre: Repeat- More early gas
Post: OK- No Rotation changes but offset on X-ray- Worried about this being a locked mode but not sure- Try real locked mode #002 to confirm

Mar 17 2010 12:42:20:390PM 1100317015 Basil Duval Pre: Repeat #002- Locked mode.... for sure ! (increase prefill to avoid disruption)
Post: OK- Strange and only "otherwise" usable shot- Te _900eV too low for Ar. try again !

Mar 17 2010 12:53:15:627PM 1100317016 Basil Duval Pre: Repeat #002- Locked mode.... for sure ! (increase prefill to avoid disruption)
Post: OK- Real Locked- X-ray spectrometer has drifted

Mar 17 2010 01:23:36:417PM 1100317017 Basil Duval Pre: Repeat #012- try to remove density "hole" @0.3-0.5s to stop locked mode-
Post: OK- Lost all X-ray data- still hole in Ne evolution and sawteeth were "odd"

Mar 17 2010 01:24:55:230PM 1100317018 Basil Duval Pre: Repeat #012- try to remove density "hole" @0.3-0.5s to stop locked mode-
Post: OK- Ne ramp started too high- some counter rotation that was extinguished at higher densities- sawteeth back to normal- Although period seems to have two distinct frequencies)

Mar 17 2010 01:47:57:503PM 1100317019 Basil Duval Pre: Repeat #012- reduce early gas to reduce lower value of ramp
Post: OK- little activity on X-ray (Lyman alpha missing)

Mar 17 2010 02:08:07:057PM 1100317020 Basil Duval Pre: Repeat #012- flat density
Post: OK- little activity on X-ray (Lyman alpha missing)- transition caused by Ninja-

Mar 17 2010 02:16:32:437PM 1100317021 Basil Duval Pre: Repeat #012- flat density (apart from Ninja still ON)
Post: OK- But still not limited=

Mar 17 2010 02:31:50:787PM 1100317022 Basil Duval Pre: Repeat #012- flat density Ninja-> OFF
Post: OK- still only marginally limited and Ar contribution to Zeff getting a little higher than one might want

Mar 17 2010 02:40:57:040PM 1100317023 Basil Duval Pre: Repeat #012- Further in radially
Post: OK- clearly limited- too much Ar- Density too high- No rotation change...

Mar 17 2010 02:51:48:810PM 1100317024 Basil Duval Pre: Repeat #012- Further in radially++, reduce Ar- lower early Ne
Post: OK- Too low ne- locked @0.3s blew @0.4- Try to halve change from #23 and then give up-

Mar 17 2010 03:07:13:970PM 1100317025 Basil Duval Pre: Repeat #012- increase early Ne to avoid lock- Clearly limited config
Post: OK- Great shot- Ne probably too high (c/f TCV results)- Co-rotation

Mar 17 2010 03:36:11:403PM 1100317026 Basil Duval Pre: Repeat- Program Ne=0.6- @0.8sec pull limited off wall -> diverted
Post: OK- Worked- Got strong Ne drop and Co -> counter swing on rotation- MUST LOOK AT THIS IN DETAIL WHEN IT's UNDERSTOOD

Mar 17 2010 03:54:35:317PM 1100317027 Basil Duval Pre: Repeat- #20 with density ramp from 0.6->1.5 sec qedge=3- AVOID LOCKING
Post: BLIP- Density V. High- Burp from somewhere (C V. High????)

Mar 17 2010 04:22:52:047PM 1100317028 Basil Duval Pre: TRY AGAIN- Repeat- #20 with density ramp from 0.6->1.5 sec qedge=3- AVOID LOCKING
Post: OK ! transition

Mar 17 2010 04:23:25:280PM 1100317029 Basil Duval Pre: Repeat q=4
Post: OK ! velocity doesn't move (Matt says we need lower Ne anyway)

Mar 17 2010 04:58:46:217PM 1100317030 Basil Duval Pre: Repeat q=5
Post: OK ! But no transition again

Mar 17 2010 04:59:03:700PM 1100317031 Basil Duval Pre: Repeat q=4, lower density
Post: OK ! But no transition again++

Mar 17 2010 05:00:03:153PM 1100317032 Basil Duval Pre: Repeat q=3.6 (900kA), same density
Post: OK ! TRANSITION @1.0s- So we were ALL right-

Mar 17 2010 05:20:19:223PM 1100317033 Basil Duval Pre: Last Shot- Locked mode Calibration based on #016-possibly---
Post: Disrupted !0.45s- Not enough for a real calibration

END OF DAY

Physics Operator Comments

Mar 17 2010 09:12:00:790AM 1100317001 Jim Irby loaded from 1091216030
loaded seg 1 from 1100316032
Ip 1000 kA
prefill from -0.356 to -.0300 s
nl04 0.3e20/m^2
argon puff from 0.300 to 0.500 s
loaded

cryopump will be on

fizzle --- numerous physop screwups

Mar 17 2010 09:39:57:257AM 1100317002 Jim Irby changes --------------------------------

loaded from 1100316030 --- locked mode cal shot
prefill at 26 ms
loaded

no cryopump

results --------------------------------

plasma into rampdown

Mar 17 2010 09:53:54:260AM 1100317003 Jim Irby changes --------------------------------

loaded from 1100316006
loaded seg 1 from 1100316030 into seg 1
density ramp programmed
Ip from 800 to 1066 kA
loaded

results --------------------------------

plasma into rampdown

Mar 17 2010 10:07:17:483AM 1100317004 Jim Irby changes --------------------------------

tweaked Ip rise a little
nl04 request down to 1.0e20/m^2 at 1.5 s
loaded

results --------------------------------

plasma into rampdown

Mar 17 2010 10:15:30:130AM 1100317005 Jim Irby changes --------------------------------

nl_04 from 0.6 to 0.7e20 /m^2 from 0.6 to 1.6 s
loaded

results --------------------------------

plasma into rampdown

Mar 17 2010 10:28:04:760AM 1100317006 Jim Irby changes --------------------------------

repeat

results --------------------------------

plasma into rampdown

Mar 17 2010 10:47:04:640AM 1100317007 Jim Irby changes --------------------------------

nl04 request 0.7e20/m^2 at 1.0 s then down to 0.5e20/m^2
loaded

results --------------------------------

disruption at 1.576 s --- Matt sees large boron injection (W at 0.25 s)

Mar 17 2010 10:55:29:707AM 1100317008 Jim Irby changes --------------------------------

modified density programming to give earlier ramp
prefill from 26 to 24 ms (disruption recovery)
loaded

results --------------------------------

disruption a little later at 1.62 s

Mar 17 2010 11:11:18:277AM 1100317009 Jim Irby changes --------------------------------

nl04 request to 7.7e19/m^2 at 0.9 s
loaded

results --------------------------------

injection at 0.32 s --- plasma for 0.33 s
Matt sees boron/W

Mar 17 2010 11:31:51:360AM 1100317010 Jim Irby changes --------------------------------

try again w/o flakes

results --------------------------------

plasma for 0.3 s --- lots of hards, density low during startup

Mar 17 2010 11:40:39:537AM 1100317011 Jim Irby changes --------------------------------

prefill from 24 to 30 ms
loaded

results --------------------------------

plasma for 1.557 s

Mar 17 2010 11:58:47:420AM 1100317012 Jim Irby changes --------------------------------

import seg 2 from 1100317004 into seg 2
loaded

results --------------------------------

plasma for 0.5 s --- locked modes
same programming resulted in much lower early density

Mar 17 2010 12:10:22:970PM 1100317013 Jim Irby changes --------------------------------

nl04 request raised before 400 ms
pg3 puff earlier and higher
loaded

results --------------------------------

plasma for .625 s density higher early, but still drops well below programmed levels by 0.4 s

Mar 17 2010 12:22:15:600PM 1100317014 Jim Irby changes --------------------------------

added more gas early with pg3
dropped early density in seg2 to fix overshoot
loaded

results --------------------------------

plasma into rampdown -- hards much better -- density still dropping until about 400 ms.

Mar 17 2010 12:46:12:013PM 1100317015 Jim Irby changes --------------------------------

import seg 2 from 1100317002 into seg 2
added a little more gas early with pg3
loaded

results --------------------------------

plasma into rampdown --- wrong segment, but a very nice shot!

hards are gone. Density higher before 100 ms

try again...

Mar 17 2010 12:53:04:783PM 1100317016 Jim Irby changes --------------------------------

import seg 4 from 1100317002 into seg 4
seg 2 off, seg 4 on
loaded

results --------------------------------

plasma into rampdown --- locked mode around 0.65 s --- marfe early, but no hards

Mar 17 2010 01:12:08:380PM 1100317017 Jim Irby changes --------------------------------

import seg 2 from 1100317012 into seg 2
seg 4 off, seg 2 on
increased density request before 400 ms
loaded

results --------------------------------

plasma into rampdown --- still had dip in density

Mar 17 2010 01:24:57:027PM 1100317018 Jim Irby changes --------------------------------

nl04 request increase from 300 to 500 ms
loaded

results --------------------------------

plasma into rampdown --- density dip much improved --- no hards

Mar 17 2010 01:35:27:200PM 1100317019 Jim Irby changes --------------------------------

dropped density request before 0.4 s a little --- too high at start of ramp
loaded

results --------------------------------

plasma into rampdown --- density lower

Mar 17 2010 01:55:49:753PM 1100317020 Jim Irby changes --------------------------------

no density ramp --- now flat at 0.55e20/m^2 from 0.5 s
loaded

results --------------------------------

plasma into rampdown --- NINJA brings up density

Mar 17 2010 02:11:33:170PM 1100317021 Jim Irby changes --------------------------------

move it all over:
CLEARIN reduced by 0.015 m
RCUR reduced by 0.015 m
loaded

results --------------------------------

not limited --- gap still about 3 mm

Mar 17 2010 02:21:39:937PM 1100317022 Jim Irby changes --------------------------------

CLEARIN reduced another 0.005 m
RCUR reduced another 0.005 m
loaded

results --------------------------------

plasma into rampdown --- limited (< 1 mm gap)

Mar 17 2010 02:41:28:320PM 1100317023 Jim Irby changes --------------------------------

want it hard limited:

CLEARIN reduced another 0.005 m
ZXL reduced by .02 m
RXL flat at 0.00 m
nl_04 request reduced before 400 ms
loaded

results --------------------------------

plasma into rampdown --- still too wimpy a limit

Mar 17 2010 02:54:08:887PM 1100317024 Jim Irby changes --------------------------------

CLEARIN reduced another .005 m
Argon puff cut in half to 100 ms
reduced pg3 puff by about 10 ms (hards again?)
loaded

results --------------------------------

plasma for 0.4 s --- locked mode

Mar 17 2010 03:27:20:227PM 1100317025 Jim Irby changes --------------------------------

pg3 increased by 5 ms in attempt to get rid of locked modes
loaded

results --------------------------------

plasma for 1.5 s

Mar 17 2010 03:37:34:653PM 1100317026 Jim Irby changes --------------------------------

from 0.8 to 0.9 s reverse changes to CLEARIN, RCUR, RXL: go from limited to diverted
loaded

results --------------------------------

plasma into rampdown --- diverted as programmed --- big density drop

Mar 17 2010 03:55:26:333PM 1100317027 Jim Irby changes --------------------------------

import seg 2 from 1100317020 to seg
density ramp from 0.6 to 1.5 s of 0.55e20 to 0.7e20 /m^2
loaded

results --------------------------------

fizzle --- not sure of cause --- large CIII, pressure high

Mar 17 2010 04:02:00:663PM 1100317028 Jim Irby changes --------------------------------

repeat

results --------------------------------

plasma into rampdown

Mar 17 2010 04:15:04:060PM 1100317029 Jim Irby changes --------------------------------

Ip from 1066 to 800 kA

results --------------------------------

plasma into rampdown --- boring shot I'm told

Mar 17 2010 04:27:00:000PM 1100317030 Jim Irby changes --------------------------------

Ip from 800 to 640 kA
loaded

results --------------------------------

plasma into rampdown

Mar 17 2010 04:41:31:100PM 1100317031 Jim Irby changes --------------------------------

Ip back to 800 kA
nl04 ramp from 0.30e20 to 0.50e20/m^2
loaded

results --------------------------------

plasma into rampdown --- density too high to get upward going ramp

Mar 17 2010 04:51:57:090PM 1100317032 Jim Irby changes --------------------------------

Ip from 800 to 900 kA
loaded

results --------------------------------

plasma into rampdown

Mar 17 2010 05:10:48:313PM 1100317033 Jim Irby changes --------------------------------

seg 2 off, seg 4 on --- locked mode cal shot I hope
loaded

results --------------------------------

plasma for 0.46 s --- large moly injection, but also early drop in density

Mar 18 2010 08:58:27:017AM 1100317033 Ron Parker Shot 1 coming up

Mar 18 2010 08:59:30:267AM 1100317033 Ron Parker Shot 1 coming up

Engineering Operator Comments

Shot Time Type Status Comment

1 09:04:16:773AM Plasma Ok

2 09:21:19:500AM Plasma Ok

3 09:41:49:913AM Plasma Ok

4 09:55:54:010AM Plasma Ok

5 10:08:56:937AM Plasma Ok

6 10:21:47:943AM Plasma Ok

7 10:35:02:730AM Plasma Ok

8 10:48:46:297AM Plasma Ok

9 11:05:48:350AM Plasma Ok

10 11:21:04:420AM Plasma Ok

11 11:34:19:457AM Plasma Ok

12 11:47:23:790AM Plasma Ok

13 12:02:33:420PM Plasma Ok

14 12:15:38:410PM Plasma Ok

15 12:32:52:120PM Plasma Ok

16 12:45:51:687PM Plasma Ok

17 01:02:49:147PM Plasma Ok

18 01:17:55:200PM Plasma Ok

19 01:31:16:717PM Plasma Ok

20 01:44:15:110PM Plasma Ok

21 02:04:22:837PM Plasma Ok

22 02:17:16:827PM Plasma Ok

23 02:33:07:567PM Plasma Ok

24 02:47:08:963PM Plasma Ok

25 03:01:03:390PM Plasma Ok

26 03:25:43:040PM Plasma Ok

27 03:43:24:203PM Plasma Ok

28 03:56:27:270PM Plasma Ok

29 04:09:13:447PM Plasma Ok

30 04:22:41:483PM Plasma Ok

31 04:35:35:613PM Plasma Ok

32 04:48:49:510PM Plasma Ok

33 05:05:16:517PM Plasma Bad Comm. failure on OH2OH1 self powered ckt. fired

System Availability

Mar 17 2010 09:03:49:977AM

System Available Comment Availability
Changed Owner Description Who Can
Change
Active MHD no secured - tagged out Jun 02 2008 11:03AM (sears) Joe Snipes Active MHD Antenna sears,snipes
BES yes 7 horizontal views spread out R_maj=[0.72-0.9m], 3 cm over the tokamak midplane (beam) Jul 09 2009 05:12PM (bespam) Bill Rowan Beam Emission Spectroscopy bespam,liao,rowan
Bolometers yes 2pi (diode+foil), AXA, AXJ, WB3AX, WB4AX, LEDGE-AX working fine. MID-FOILS working fine. The LEDGE/DIV foils still need calibrations applied Aug 27 2009 09:09AM (mlreinke) Matt Reinke Bolometers hutch,mlreinke
Boronization yes Nov 13 2009 06:37AM (dekow) Jim Irby Boronization dekow,irby
CNPA no Single channel CNPA available as of 12/1707 Jun 10 2009 10:22AM (twf) Ron Parker Compact Neutral Analyzer parker
Cryopump - Upper Divertor yes Operational Nov 09 2009 09:12AM (irby) Brian LaBombard Upper Divertor Cryopump irby,labombard
CXRS yes The wide-view toroidal array was installed, spatially and absolutely calibrated. There are 7 toroidal chords intersect the beam at the major_R_range=[74.2:83.6]cm. Spatial resolution: 1.2 cm. The F-top wide-view poloidal array was installed and spatially calibrated. There are 19 chords intersect the beam at the major_R_range=[0.65:0.9.]m. Spatial resolution: 1.22 cm. Jul 09 2009 05:16PM (bespam) Bill Rowan Charge Exchange Spectroscopy bespam,blip,liao,rachmcd,rowan
D Alpha yes \ha2_bright is available; \SPECTROSCOPY::TOP.VUV.VIS_SIGNALS:MCP_VIS_SIG1 is not available Jul 01 2009 09:45AM (terry) Jim Terry Balmer Alpha Monitor irby,terry,wolfe
Dalsa yes system is aligned and operating; not yet calibrated Jul 14 2009 02:22PM (marmar) Earl Marmar Visible Bremsstrahlung marmar
Disruption Mitigation yes operational, but turned off Nov 03 2009 04:59PM (granetz) Robert Granetz Gas Jet granetz,whyte
Divertor IR no Mar 06 2007 10:50AM Glen Wurden Divertor IR Digital Video gwurden,terry
Divertor IR Spectroscopy no Mar 06 2007 10:51AM Glen Wurden Divertor IR Spectroscopy gwurden,terry
DNB no in test mode only Nov 03 2009 05:01PM (granetz) Robert Granetz Diagnostic Neutral Beam dterry,granetz,gung
ECDC yes Nov 09 2009 09:13AM (irby) Jim Irby 2.45 GHz, 3 kW, discharge cleaning system dekow,irby,pfeiffer
FRC-ECE yes All channels working and calibrated. Feb 02 2010 09:56AM (phillips) Perry Phillips Heterodyne ECE-32 channels phillips
G-Side Ratiomatic yes Gauge installed. Controller repaired. Aug 23 2009 10:36PM (toland) Brian LaBombard G-side ratiomatic ionization gauge labombard,toland
Glow Discharge no 6/10/09: Paddles meggered at 1000 v to machine ground (>300 Mohm) prior to closing the vacuum chamber. Plugs for Power Supply and Controls Unplugged and Red Tagged, Safe for In-Vessel Access Jun 10 2009 01:47PM (dekow) Jim Irby 1 kV, 5 A, glow discharge system dekow,dterry,irby
GPC yes Operational. Jul 28 2009 04:23PM (hubbard) Amanda Hubbard ECE Polychromater hubbard,schmidt
GPC2 yes Most channels operational. Jul 28 2009 04:23PM (hubbard) Amanda Hubbard ECE Polychromater hubbard,schmidt
GPI yes The Xpt-view, the midplane-view cameras are operational. The innerwall GPI (coupled to the fast-diodes) is available. Jul 01 2009 09:45AM (terry) Jim Terry Gas Puff Imaging terry,zweben
H/D yes poses no safety hazard for people working around the machine Jun 18 2009 01:04PM (marmar) Earl Marmar H/D Ratio marmar
HEAT yes Oct 27 2009 10:39AM (dekow) Gary Dekow - Machine Heaters - burke,dekow
Hirex Jr yes Hirex-Jr has been installed and tested Jun 17 2009 11:54AM (rice) John Rice High Resolution X-Ray ince,rice
Hirex Sr yes currently only one detector is operational, off-axis He-like argon emission Jul 14 2009 10:01AM (rice) John Rice High Resolution X-Ray ince,rice
HXR no In safe mode (high voltage turned off) May 27 2008 09:19PM (schmidt) Ron Parker Hard X-Ray Array parker,schmidt
ICRF D-Antenna yes operational at 80 MHz Jul 21 2009 04:49PM (wukitch) Steve Wukitch D-port antenna wukitch,ylin
ICRF E-Antenna yes antenna and FFT operational Jul 21 2009 04:49PM (wukitch) Steve Wukitch E-port antenna wukitch,ylin
ICRF J-Antenna yes available at 80 MHz and [0,pi,0,pi] phasing Sep 04 2009 10:01AM (wukitch) Steve Wukitch J-port antenna wukitch,ylin
Laser Blow-Off yes Requires some advance notice for laser start-up Oct 16 2009 12:46PM (g) Martin Greenwald Impurity Injection System g,nthoward
Lower Hybrid no Breaker locked and tagged out. Waveguide disassembly started. Open Waveguides have been shorted. May 28 2008 09:47AM (dterry) Ron Parker Lower Hybrid dterry,parker,wallaceg
LPI no Beam line removed May 30 2008 02:09PM (bose) Earl Marmar Lithium Pellet Injector bose,marmar
Ly-alpha yes Midplane, WB4-LY, LEDGE-LY all collecting data. WB1-LY not attached. Aug 27 2009 09:10AM (mlreinke) Matt Reinke Lyman alpha cameras labombard,mlreinke
McPherson yes Operating normally Aug 27 2009 09:10AM (mlreinke) Jim Terry VUV Spectrometer mlreinke,terry
Michelson yes Operational. Recalibrated 7/27/09. Jul 28 2009 04:22PM (hubbard) Amanda Hubbard ECE Te Profiles hubbard,schmidt
MKS yes Gauges are on. B-bottom is not operating - bad sensor head? Jul 14 2009 09:12PM (labombard) Brian LaBombard Baratron pressure gauges labombard
MLP no System is in edge lab. Version 2 drivers ready to test. Needs a student to help work on it. Jul 14 2009 09:20PM (labombard) Brian LaBombard Mirror Langmuir Probe Electronics System labombard
MSE no As of 6/10/09, MSE is calibrated & ready to go. Awaiting DNB. Jun 10 2009 10:34AM (sscott) Steve Scott Motional Stark Effect jinseok,sscott
Neutrons yes Neutron detectors are calibrated and ready to go. Voltages will be turned on prior to first plasma. Jun 10 2009 10:35AM (fiore) Catherine Fiore Neutron Detectors fiore
Neuts and Hards yes Power back on morning of 11/09 before run Nov 09 2009 09:10AM (irby) Jim Irby X-Ray/Neutron Detector at K-Hor irby
NINJA no Capillaries were tested in-vessel. Plenum has a leak and needs fixing. Jul 14 2009 09:14PM (labombard) Brian LaBombard NINJA gas puff labombard,terry
PCI yes Operational. Nov 12 2009 02:36PM (ntsujii) Miklos Porkolab Phase Contrast Imaging arai,ennever,ntsujii,porkolab
Penning Gauges yes High voltage is enabled (on during INIT, off during RECOOL). Jun 30 2009 09:42PM (labombard) Brian LaBombard Penning Ionization Gauges labombard
Plasma TV yes WIDE1, WIDE2 (chan 33), DANT, JANT and DIV are operational. Jul 01 2009 09:46AM (terry) Jim Terry Video of plasma via several cameras dekow,irby,terry,wolfe
Polarimeter no Safe for Machine Entry Sep 14 2007 12:17PM (irby) Jim Irby C-Mod Polarimeter irby
Power - Alternator Air Switch yes Checked and Operational as of 06/18/09 Jun 19 2009 08:04AM (irby) Gary Dekow feeds all the other supplies cochran,dekow,dterry,irby
Power - PEI yes Nov 13 2009 06:38AM (dekow) Gary Dekow PEI System cochran,dekow,dterry,irby
Power - TMX yes Checked out and ready for Magnet Tests as of 06/18/09 Jun 19 2009 08:07AM (irby) Gary Dekow Ef2s,. EFCs and A-Coils byford,cochran,dekow,dterry,irby
Power Systems yes Checked out and ready for Magnet Tests as of 06/18/09 Jun 19 2009 08:07AM (irby) Jim Irby C-Mod Magnet Supplies byford,cochran,dekow,dterry,irby
Probe Array - ISD yes Array is operational with new cPCI data system. Probe 14 has open circuit. Jul 14 2009 09:17PM (labombard) Brian Labombard Inner Lower Divertor Probe Array labombard
Probe Array - LH no LH launcher not installed. Cables are unplugged at the A-port rack. Jul 14 2009 09:16PM (labombard) Brian LaBombard Lower Hybrid Probe Array labombard
Probe Array - OSD yes Array is operational with new cPCI data system. Jul 14 2009 09:16PM (labombard) Brian LaBombard Outer Lower Divertor Probe Array labombard
Probe Array - UDIV yes Array is operational with new cPCI data system. Probe 13 has a bad cable (open). Jul 14 2009 09:17PM (labombard) Brian LaBombard Upper Divertor Probe Array labombard
Reflectometer yes Since 1100120000 the system is operational except for channel 110 which is not installed Jan 20 2010 09:17AM (dominguez) Earl Marmar Reflectometer dominguez,marmar
Scanning Probe - ASP yes Probe is operational. Needs plasma conditioning. Jul 14 2009 09:18PM (labombard) Brian LaBombard A-Port Scanning Probe labombard
Scanning Probe - FSP yes Probe is operational. Needs plasma conditioning. Jul 14 2009 09:18PM (labombard) Brian LaBombard F-Port Scanning Probe labombard
Scanning Probe - WASP yes System connected to A-port WASP. Needs plasma testing. Jul 14 2009 09:19PM (labombard) Brian LaBombard Inner Wall Scanning Probe labombard,nsmick
Sparker yes Sparker back in operation before 11/09 run Nov 09 2009 09:11AM (irby) Jim Irby Field Emission Preionization for C-Mod dekow,irby,parkin
TCI yes System restarted and aligned. Several chords available including NL04. Density Feedback available. Ready for plasma. Jun 18 2009 09:15AM (murray) Jim Irby Two-Color Interferometer irby,murray
TS - Core yes 2 lasers working. 15 spatial channels operational. Calibrated Oct 13 2009 07:49PM (yma) Jerry Hughes Core Thomson scattering jwhughes,yma,zhang
TS - Edge yes Operational, and calibrated. Oct 11 2009 03:01PM (jwhughes) Jerry Hughes Millimeter resolution edge Thomson scattering jwhughes,yma,zhang
Vispec no 350 and 670 nm, 4 spatial channels Nov 28 2007 09:58AM (agraf) Alex Graf Visible Spectrometer agraf
XTOMO yes Operating normally Aug 27 2009 09:10AM (mlreinke) Bob Granetz X-Ray Tomography granetz,mlreinke

Session Leader Comments
Mar 17 2010 09:21:18:437AM	1100317001	Basil Duval	Pre: Get repeat shot based on shape #1091216029 (breakdown full field- Bob's startup from yesterday) Ar requested for the X-ray spectrometer No density ramp requested- We're looking to get diagnostics and see what shape we eventually get- Post: BLIP- like being home-
Mar 17 2010 09:30:15:800AM	1100317002	Basil Duval	Pre: Locked more #30 from yesterday, to calibrate X-ray spectrometer Post: OK-
Mar 17 2010 09:47:09:057AM	1100317003	Basil Duval	Pre: Shape from 1100317030- q 4->3.1, Ne ramp 0.7->1.3e20 during flat top check Argon Diagnostics Post: Density ramp too fast and current ramp too slow- some data on Crystal- Good start
Mar 17 2010 10:04:27:530AM	1100317004	Basil Duval	Pre: Repeat- Faster Ip ramp, target Ne ramp 0.7->1e20 Post: OK- Reversal ! However- Ne ramp started @0.9s and was really fast !
Mar 17 2010 10:18:17:177AM	1100317005	Basil Duval	Pre: Repeat with ne ramp from 0.6->1.6 sec 0.6->0.7 in nl_04 units Post: OK- Worked again- transition Co-> Counter occurs at nl_04 ~0.65
Mar 17 2010 10:29:54:480AM	1100317006	Basil Duval	Pre: Repeat - prove reproducibility Post: OK- got slower transition, but it was there
Mar 17 2010 10:49:45:050AM	1100317007	Basil Duval	Pre: Faster gas ramp up to 1s, then gas cut to attempt reverse transition Post: OK- didn't get to 0.65 before gas cut- disrupted @1.5s and looked like impurity increased dramatically ~1s maybe implying something dropping into plasma.
Mar 17 2010 11:02:08:537AM	1100317008	Basil Duval	Pre: Repeat with faster initial gas ramp to get reversal before cut- Post: OK- didn't get to transition (0.65 just reached)- ?
Mar 17 2010 11:23:54:500AM	1100317009	Basil Duval	Pre: Repeat target 0.7-> 0.77 nl_04 @0.9s- Start to worry that transition is not reproducible ? Post: BLIP- Somthing dropped in- Tungsten ?
Mar 17 2010 11:27:31:937AM	1100317010	Basil Duval	Pre: Repeat- Post: Huge influx of something @0.3s- Machine is not well- Prefill too low?
Mar 17 2010 11:40:58:677AM	1100317011	Basil Duval	Pre: Repeat- increase prefill ? Post: OK- but missing velocity reversal ?- Go back to best shot #4
Mar 17 2010 12:18:21:520PM	1100317012	Basil Duval	Pre: Repeat- sho #004 (are we still in business ?) Post: OK- Disrupt @0.6s- not getting us anywhere here ?- Early density much lower than (from 60->100ms) #004- feed it more gas- Can we get back ?
Mar 17 2010 12:28:20:663PM	1100317013	Basil Duval	Pre: Repeat- Post: OK- Disrupt again--- locked mode?
Mar 17 2010 12:29:11:697PM	1100317014	Basil Duval	Pre: Repeat- More early gas Post: OK- No Rotation changes but offset on X-ray- Worried about this being a locked mode but not sure- Try real locked mode #002 to confirm
Mar 17 2010 12:42:20:390PM	1100317015	Basil Duval	Pre: Repeat #002- Locked mode.... for sure ! (increase prefill to avoid disruption) Post: OK- Strange and only "otherwise" usable shot- Te _900eV too low for Ar. try again !
Mar 17 2010 12:53:15:627PM	1100317016	Basil Duval	Pre: Repeat #002- Locked mode.... for sure ! (increase prefill to avoid disruption) Post: OK- Real Locked- X-ray spectrometer has drifted
Mar 17 2010 01:23:36:417PM	1100317017	Basil Duval	Pre: Repeat #012- try to remove density "hole" @0.3-0.5s to stop locked mode- Post: OK- Lost all X-ray data- still hole in Ne evolution and sawteeth were "odd"
Mar 17 2010 01:24:55:230PM	1100317018	Basil Duval	Pre: Repeat #012- try to remove density "hole" @0.3-0.5s to stop locked mode- Post: OK- Ne ramp started too high- some counter rotation that was extinguished at higher densities- sawteeth back to normal- Although period seems to have two distinct frequencies)
Mar 17 2010 01:47:57:503PM	1100317019	Basil Duval	Pre: Repeat #012- reduce early gas to reduce lower value of ramp Post: OK- little activity on X-ray (Lyman alpha missing)
Mar 17 2010 02:08:07:057PM	1100317020	Basil Duval	Pre: Repeat #012- flat density Post: OK- little activity on X-ray (Lyman alpha missing)- transition caused by Ninja-
Mar 17 2010 02:16:32:437PM	1100317021	Basil Duval	Pre: Repeat #012- flat density (apart from Ninja still ON) Post: OK- But still not limited=
Mar 17 2010 02:31:50:787PM	1100317022	Basil Duval	Pre: Repeat #012- flat density Ninja-> OFF Post: OK- still only marginally limited and Ar contribution to Zeff getting a little higher than one might want
Mar 17 2010 02:40:57:040PM	1100317023	Basil Duval	Pre: Repeat #012- Further in radially Post: OK- clearly limited- too much Ar- Density too high- No rotation change...
Mar 17 2010 02:51:48:810PM	1100317024	Basil Duval	Pre: Repeat #012- Further in radially++, reduce Ar- lower early Ne Post: OK- Too low ne- locked @0.3s blew @0.4- Try to halve change from #23 and then give up-
Mar 17 2010 03:07:13:970PM	1100317025	Basil Duval	Pre: Repeat #012- increase early Ne to avoid lock- Clearly limited config Post: OK- Great shot- Ne probably too high (c/f TCV results)- Co-rotation
Mar 17 2010 03:36:11:403PM	1100317026	Basil Duval	Pre: Repeat- Program Ne=0.6- @0.8sec pull limited off wall -> diverted Post: OK- Worked- Got strong Ne drop and Co -> counter swing on rotation- MUST LOOK AT THIS IN DETAIL WHEN IT's UNDERSTOOD
Mar 17 2010 03:54:35:317PM	1100317027	Basil Duval	Pre: Repeat- #20 with density ramp from 0.6->1.5 sec qedge=3- AVOID LOCKING Post: BLIP- Density V. High- Burp from somewhere (C V. High????)
Mar 17 2010 04:22:52:047PM	1100317028	Basil Duval	Pre: TRY AGAIN- Repeat- #20 with density ramp from 0.6->1.5 sec qedge=3- AVOID LOCKING Post: OK ! transition
Mar 17 2010 04:23:25:280PM	1100317029	Basil Duval	Pre: Repeat q=4 Post: OK ! velocity doesn't move (Matt says we need lower Ne anyway)
Mar 17 2010 04:58:46:217PM	1100317030	Basil Duval	Pre: Repeat q=5 Post: OK ! But no transition again
Mar 17 2010 04:59:03:700PM	1100317031	Basil Duval	Pre: Repeat q=4, lower density Post: OK ! But no transition again++
Mar 17 2010 05:00:03:153PM	1100317032	Basil Duval	Pre: Repeat q=3.6 (900kA), same density Post: OK ! TRANSITION @1.0s- So we were ALL right-
Mar 17 2010 05:20:19:223PM	1100317033	Basil Duval	Pre: Last Shot- Locked mode Calibration based on #016-possibly--- Post: Disrupted !0.45s- Not enough for a real calibration END OF DAY

Physics Operator Comments
Mar 17 2010 09:12:00:790AM	1100317001	Jim Irby	loaded from 1091216030 loaded seg 1 from 1100316032 Ip 1000 kA prefill from -0.356 to -.0300 s nl04 0.3e20/m^2 argon puff from 0.300 to 0.500 s loaded cryopump will be on fizzle --- numerous physop screwups
Mar 17 2010 09:39:57:257AM	1100317002	Jim Irby	changes -------------------------------- loaded from 1100316030 --- locked mode cal shot prefill at 26 ms loaded no cryopump results -------------------------------- plasma into rampdown
Mar 17 2010 09:53:54:260AM	1100317003	Jim Irby	changes -------------------------------- loaded from 1100316006 loaded seg 1 from 1100316030 into seg 1 density ramp programmed Ip from 800 to 1066 kA loaded results -------------------------------- plasma into rampdown
Mar 17 2010 10:07:17:483AM	1100317004	Jim Irby	changes -------------------------------- tweaked Ip rise a little nl04 request down to 1.0e20/m^2 at 1.5 s loaded results -------------------------------- plasma into rampdown
Mar 17 2010 10:15:30:130AM	1100317005	Jim Irby	changes -------------------------------- nl_04 from 0.6 to 0.7e20 /m^2 from 0.6 to 1.6 s loaded results -------------------------------- plasma into rampdown
Mar 17 2010 10:28:04:760AM	1100317006	Jim Irby	changes -------------------------------- repeat results -------------------------------- plasma into rampdown
Mar 17 2010 10:47:04:640AM	1100317007	Jim Irby	changes -------------------------------- nl04 request 0.7e20/m^2 at 1.0 s then down to 0.5e20/m^2 loaded results -------------------------------- disruption at 1.576 s --- Matt sees large boron injection (W at 0.25 s)
Mar 17 2010 10:55:29:707AM	1100317008	Jim Irby	changes -------------------------------- modified density programming to give earlier ramp prefill from 26 to 24 ms (disruption recovery) loaded results -------------------------------- disruption a little later at 1.62 s
Mar 17 2010 11:11:18:277AM	1100317009	Jim Irby	changes -------------------------------- nl04 request to 7.7e19/m^2 at 0.9 s loaded results -------------------------------- injection at 0.32 s --- plasma for 0.33 s Matt sees boron/W
Mar 17 2010 11:31:51:360AM	1100317010	Jim Irby	changes -------------------------------- try again w/o flakes results -------------------------------- plasma for 0.3 s --- lots of hards, density low during startup
Mar 17 2010 11:40:39:537AM	1100317011	Jim Irby	changes -------------------------------- prefill from 24 to 30 ms loaded results -------------------------------- plasma for 1.557 s
Mar 17 2010 11:58:47:420AM	1100317012	Jim Irby	changes -------------------------------- import seg 2 from 1100317004 into seg 2 loaded results -------------------------------- plasma for 0.5 s --- locked modes same programming resulted in much lower early density
Mar 17 2010 12:10:22:970PM	1100317013	Jim Irby	changes -------------------------------- nl04 request raised before 400 ms pg3 puff earlier and higher loaded results -------------------------------- plasma for .625 s density higher early, but still drops well below programmed levels by 0.4 s
Mar 17 2010 12:22:15:600PM	1100317014	Jim Irby	changes -------------------------------- added more gas early with pg3 dropped early density in seg2 to fix overshoot loaded results -------------------------------- plasma into rampdown -- hards much better -- density still dropping until about 400 ms.
Mar 17 2010 12:46:12:013PM	1100317015	Jim Irby	changes -------------------------------- import seg 2 from 1100317002 into seg 2 added a little more gas early with pg3 loaded results -------------------------------- plasma into rampdown --- wrong segment, but a very nice shot! hards are gone. Density higher before 100 ms try again...
Mar 17 2010 12:53:04:783PM	1100317016	Jim Irby	changes -------------------------------- import seg 4 from 1100317002 into seg 4 seg 2 off, seg 4 on loaded results -------------------------------- plasma into rampdown --- locked mode around 0.65 s --- marfe early, but no hards
Mar 17 2010 01:12:08:380PM	1100317017	Jim Irby	changes -------------------------------- import seg 2 from 1100317012 into seg 2 seg 4 off, seg 2 on increased density request before 400 ms loaded results -------------------------------- plasma into rampdown --- still had dip in density
Mar 17 2010 01:24:57:027PM	1100317018	Jim Irby	changes -------------------------------- nl04 request increase from 300 to 500 ms loaded results -------------------------------- plasma into rampdown --- density dip much improved --- no hards
Mar 17 2010 01:35:27:200PM	1100317019	Jim Irby	changes -------------------------------- dropped density request before 0.4 s a little --- too high at start of ramp loaded results -------------------------------- plasma into rampdown --- density lower
Mar 17 2010 01:55:49:753PM	1100317020	Jim Irby	changes -------------------------------- no density ramp --- now flat at 0.55e20/m^2 from 0.5 s loaded results -------------------------------- plasma into rampdown --- NINJA brings up density
Mar 17 2010 02:11:33:170PM	1100317021	Jim Irby	changes -------------------------------- move it all over: CLEARIN reduced by 0.015 m RCUR reduced by 0.015 m loaded results -------------------------------- not limited --- gap still about 3 mm
Mar 17 2010 02:21:39:937PM	1100317022	Jim Irby	changes -------------------------------- CLEARIN reduced another 0.005 m RCUR reduced another 0.005 m loaded results -------------------------------- plasma into rampdown --- limited (< 1 mm gap)
Mar 17 2010 02:41:28:320PM	1100317023	Jim Irby	changes -------------------------------- want it hard limited: CLEARIN reduced another 0.005 m ZXL reduced by .02 m RXL flat at 0.00 m nl_04 request reduced before 400 ms loaded results -------------------------------- plasma into rampdown --- still too wimpy a limit
Mar 17 2010 02:54:08:887PM	1100317024	Jim Irby	changes -------------------------------- CLEARIN reduced another .005 m Argon puff cut in half to 100 ms reduced pg3 puff by about 10 ms (hards again?) loaded results -------------------------------- plasma for 0.4 s --- locked mode
Mar 17 2010 03:27:20:227PM	1100317025	Jim Irby	changes -------------------------------- pg3 increased by 5 ms in attempt to get rid of locked modes loaded results -------------------------------- plasma for 1.5 s
Mar 17 2010 03:37:34:653PM	1100317026	Jim Irby	changes -------------------------------- from 0.8 to 0.9 s reverse changes to CLEARIN, RCUR, RXL: go from limited to diverted loaded results -------------------------------- plasma into rampdown --- diverted as programmed --- big density drop
Mar 17 2010 03:55:26:333PM	1100317027	Jim Irby	changes -------------------------------- import seg 2 from 1100317020 to seg density ramp from 0.6 to 1.5 s of 0.55e20 to 0.7e20 /m^2 loaded results -------------------------------- fizzle --- not sure of cause --- large CIII, pressure high
Mar 17 2010 04:02:00:663PM	1100317028	Jim Irby	changes -------------------------------- repeat results -------------------------------- plasma into rampdown
Mar 17 2010 04:15:04:060PM	1100317029	Jim Irby	changes -------------------------------- Ip from 1066 to 800 kA results -------------------------------- plasma into rampdown --- boring shot I'm told
Mar 17 2010 04:27:00:000PM	1100317030	Jim Irby	changes -------------------------------- Ip from 800 to 640 kA loaded results -------------------------------- plasma into rampdown
Mar 17 2010 04:41:31:100PM	1100317031	Jim Irby	changes -------------------------------- Ip back to 800 kA nl04 ramp from 0.30e20 to 0.50e20/m^2 loaded results -------------------------------- plasma into rampdown --- density too high to get upward going ramp
Mar 17 2010 04:51:57:090PM	1100317032	Jim Irby	changes -------------------------------- Ip from 800 to 900 kA loaded results -------------------------------- plasma into rampdown
Mar 17 2010 05:10:48:313PM	1100317033	Jim Irby	changes -------------------------------- seg 2 off, seg 4 on --- locked mode cal shot I hope loaded results -------------------------------- plasma for 0.46 s --- large moly injection, but also early drop in density
Mar 18 2010 08:58:27:017AM	1100317033	Ron Parker	Shot 1 coming up
Mar 18 2010 08:59:30:267AM	1100317033	Ron Parker	Shot 1 coming up

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	09:04:16:773AM	Plasma	Ok
2	09:21:19:500AM	Plasma	Ok
3	09:41:49:913AM	Plasma	Ok
4	09:55:54:010AM	Plasma	Ok
5	10:08:56:937AM	Plasma	Ok
6	10:21:47:943AM	Plasma	Ok
7	10:35:02:730AM	Plasma	Ok
8	10:48:46:297AM	Plasma	Ok
9	11:05:48:350AM	Plasma	Ok
10	11:21:04:420AM	Plasma	Ok
11	11:34:19:457AM	Plasma	Ok
12	11:47:23:790AM	Plasma	Ok
13	12:02:33:420PM	Plasma	Ok
14	12:15:38:410PM	Plasma	Ok
15	12:32:52:120PM	Plasma	Ok
16	12:45:51:687PM	Plasma	Ok
17	01:02:49:147PM	Plasma	Ok
18	01:17:55:200PM	Plasma	Ok
19	01:31:16:717PM	Plasma	Ok
20	01:44:15:110PM	Plasma	Ok
21	02:04:22:837PM	Plasma	Ok
22	02:17:16:827PM	Plasma	Ok
23	02:33:07:567PM	Plasma	Ok
24	02:47:08:963PM	Plasma	Ok
25	03:01:03:390PM	Plasma	Ok
26	03:25:43:040PM	Plasma	Ok
27	03:43:24:203PM	Plasma	Ok
28	03:56:27:270PM	Plasma	Ok
29	04:09:13:447PM	Plasma	Ok
30	04:22:41:483PM	Plasma	Ok
31	04:35:35:613PM	Plasma	Ok
32	04:48:49:510PM	Plasma	Ok
33	05:05:16:517PM	Plasma	Bad	Comm. failure on OH2OH1 self powered ckt. fired