Alcator C-Mod Run 1080219 Information

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Miniproposals
Miniproposal:473
Date Filed: 3/9/2007
Title:Lower Hybrid System Check-out and Initial operation
First Author:J. Randall Wilson
Session Leader:Greg Wallace (shots 1-13)
Miniproposal:526
Date Filed: 1/24/2008
Title:Accesing low density /collisionality H-modes with reduced particle inventory
First Author:Steve Wolfe
Session Leader:Steve Wolfe (shots 14-30)

Operators
Session leader(s):Greg Wallace,Steve Wolfe
Physics operator(s):Earl Marmar
Engineering operator(s):Sam Pierson,Bill Parkin,Ed Fitzgerald

Engineering Operator Run Comment
MP473: LH Checkout and Conditioning Session Leader: G. Wallace Physics

Session Leader Plans
Entered: Feb 18 2008 01:51:04:380PM
Author: Steve Wolfe
Session Leader Plan for second half of Tuesday, Feb 19, 2008

MP#526 "Accessing low density/collisionality H-mode with reduced particle
inventory"
SL: wolfe
PO: Marmar

The idea is to start from a low density L-mode ICRF heated discharge with as
depleted a wall as possible, well below the minimum of the H-mode threshold vs
density curve, and fuel UP to the threshold using either a small pellet or
small gas puff. Ideally this should be done as early in the discharge as
possible, after it diverts. We want minimal gas puff in the current rise
(segment 1).

Constraints:
 half-day in the afternoon, so walls will be what they are. Fortunately it's
 supposed to be LHCD in the morning, so there shouldn't be a lot of gas. 
 No time to ECDC in He though.

 limited number of small pellets, depending on whether Brock reloaded the
 injector over the weekend.


Goal: get an H-mode with nl04< 1e20/m^2 (nebar< 1.6e20/m^3) at Ip~1MA

Proposed plan:

Use the cryopump to help reduce neutral pressure, density, if available. 

1. Start with low density 750kA plasma.similar to 1080214017. Move zcur up to
   get ssep closer to DN, around -4mm (compare early plateau of 1080125012).
   Reduce the pg3 puff in segment 1 to
   keep the initial density down, and reduce nl04 gain to zero so we
   don't puff in seg2.  Turn on 3MW RF at 0.3sec, just after it diverts. (1-3
   shots)

2A. Fire small pellet at .35sec (after start of RF) and see if it triggers an
   H-mode. Probably will need to take a few tries to get the ICRF to match and
   stay on. Observe midplane pressure, density during and after transition,
   pedestal parameters. If tripping of ICRF by pellet is a problem, try timing
   pellet just before ICRF pulse (or vice versa). If pellets aren't sufficiently   
   reliable (< 40%) move on to 2B.  (3-5 shots)

2B. If pellet gets us into H-mode, continue from 3A or 3B. If not, try short gas
    puff, starting .05sec after RF. Begin with pg3 (B-side main) for 10msec,
    100V pulse. increase or decrease puff to find minimum gas input required
    to trigger H-mode from below. (2-5 shots).

3A.If successful getting an H-mode (one way or the other), and it isn't
   radiating away, then try increasing current to 1MA or higher after the
   transition. Observe pedestal parameters, density evolution, etc. (4 shots)
   If the H-mode is short and transient, and if the density is low or falling,
   then go to 3B.

3B.Try to control the density and or radiation by puffing, turning the nl04
   feedback back on at some low value to stay in H-mode. This may be necessary
   in the pellet case if the walls are really unloaded, since the Li will not
   recycle.(4 shots)

4. If there is time remaining, consider going to upper null for best
   cryopumping, using the best trigger conditions for the LSN case.


Entered: Feb 19 2008 10:44:34:990AM
Author: Greg Wallace
SL Plan for 1080219
MP473: LH Checkout and Conditioning

Session Leader: G. Wallace
Physics Operator: R. Granetz

The purpose of this 1/2 day run will be to determine if the phase shifter
changes in the LH launcher have helped improve the power handling of the system.
The adjustable phase shifters from columns 3, 11, and 15 have been replaced with
fixed length phase shifters.

Plasma setup:
Overnight ECDC. Start with a repeat of 1080123025.

LH Setup:
Phase shifters at 90 degrees current drive direction, 0.5mm behind LH limiter.
Start at 40kV beam voltage. 500ms shot starting at 800ms.

Start with 85kW per klystron. If no arcing or glowing is seen on the LH video,
move launcher to be flush with limiter. Increase power each shot in
20kW/klystron incriments up to maximum available without arcing. After an arc,
reduce power by 25% then continue raising in 10kW incriments.

Physics Operators Plans
Entered: Feb 18 2008 03:57:25:393PM
Author: Earl Marmar
Engineering setup for Tuesday 19 Feb 2008

am: MP473 LH checkout of fixed phase shifter inserts
and
pm: MP526 Accessing low density/nu_star H-modes with reduced particle inventory

Session leaders: G. Wallace (am); S. Wolfe (pm)
Physics operator: E. Marmar

ECDC overnight in D2 and bake at 60 C.

Run will start at 09:00 and end at 17:00.

Power systems as on 1080211004 (0.75 MA, 5.4 T, LSN, 600 kW LH power).

A-coil configuration: +Dtop -Dbot -Jtop +Jbot; Enabled (standard
configuration)

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)
leave NINJA as is DISABLED

Enable the following gate valves and shutters, assuming no vacuum problems:
ECE, VUV, Z-bolo

Torvac setup: keep gate valves open



-------------------------------------------------------------------------------
ICRF Setup: All transmitters, but not needed until 1st MP is finished, which
should be at about 1:00 pm.
LH Setup: yes
DNB: no
Cryopump: Yes, but not needed until 1st MP is finished, which should be at about 1:00 pm.

-------------------------------------------------------------------------------
Run plan:
am: This LH run will be specifically to check out the new fixed phase shifters.

pm: The afternoon run will involve very low l-mode target density plasmas with significant ICRF power (\ge 3 MW). Small pellets and/or gas puffs will be used to attempt to get above the low-density h-mode limit, at least transiently, to access low density (nl_04 \le 1e20 m^{-2}) h-modes as possible AT targets. The cryopump will be used to keep the edge neutral pressure as low as possible.

Session Leader Summaries
Entered: Feb 19 2008 02:50:16:087PM
Author: Greg Wallace
Session Leader Summary for 1080219
Session Leader: G. Wallace
Physics Operator: E. Marmar


The purpose of this run was to determine if replacing the phase shifters in
columns 3, 11, and 15 would increase the power handling of the launcher. Positive
results from this morning show that replacing the phase shifters helps greatly
increase the power handling.

After arcing on column 9 at 135kW, we moved up to 170kW without arcing on any
other klystrons. Column 5 arced at 180kW but other columns behaved normally.
Shot 13 did not arc but did trip out due to high reflections at 185kW per klystron
(excepting klystrons 3 and 5). This is a significant improvement over previous
performance. 1MW net power has been achieved without arcing, although trips due
to reflections did occur late in shot 13.
Entered: Feb 19 2008 06:21:54:110PM
Author: Steve Wolfe
SL summary for part 2 of 1080219
Shots #14-30
MP#526 Access to low density H-mode
SL: wolfe
PO: Marmar
EO: Parkin, Fitzgerald

We were successful in triggering H-modes by increasing the 
density above the low density limit, initially from fueling coming
from the ICRF itself, and later by using short gas puffs from the 
pg3 piezo valve. In all cases the h-modes were elm-free and radiated 
away after 20 to 40msec, followed by repetitive L-H-L transitions. 
In these cases the density remained relatively low, below nebar~1.5e20,
but only because the h-modes were so short. Typical d/dt(nebar) was 
~7e20/m^3/sec. It is possible that if the radiation were reduced 
(boronization?) the final density might have saturated at an 
acceptable level, but it is hard to make that case based on
today's result. 

We were unsuccessful getting H-modes using the LPI. The initial attempts,
with injection after the rf, looked like fragments, with very small 
density increases. One case firing the pellet before the rf seemed to get
a full size (small) pellet, with a density increase of 2e20/m^3 and 
resulted in a disruption. 

We were plagued with disruptions for all shots between 17-26. 
Some of these had brief H-mode transitions (21, 25, 26). Turning off
J-port (later back on at only 0.5MW) seemed to fix these, most of
which seemed to be associated with explosions from the lower left
corner tile on the antenna (as seen from wide 2). Some of these 
shots also had locked modes early. 

The other major problem was runaways, which were very bad even on 
bounce-free startups. We never were successful in completely eliminating
these after the first few shots of this experiment. On shots 28 and 29
saturating early runways seemed to prevent the transition at densities
and powers that had been sufficient earlier in the day. On shot#30 the
runways were not as bad, only 3e13 on neuts/hards at 0.5sec and we got 
multiple h-modes again. 

Interesting full shots were:
  14 and 15 (multiple H-modes with "antenna fueling" (3MW)
  16 L-mode with antenna fueling (3MW) nebar~7 to 9e19/m^3
  27 L-mode with 30ms gas puff, 8e19, 2.4MW
  28 L-mode with 40ms gas puff, 9.7e19, 2.4MW, early runaways
  29 L-mode with 40ms gas puff, 1.1e20, 2.9MW, early runaways
  30 H-modes with 40ms gas puffs,1e20, 2.9MW, less early runaways




Physics Operator Summaries
Entered: Feb 20 2008 05:07:40:863PM
Author: Earl Marmar
Physop summary, 1080219

There were 2 half-day experiments planned for today, and progress was made on each. The machine ran quite well, including LH in the morning and ICRF in the afternoon. We also used the cryopump for all shots in the second-half of the run.

Power supply issues:
2 shots were lost to power supply problems. On shot 1, OH2L had a problem, apparently left over from the last shot on 1080215, which took about an hour to fix. Shot 9 was lost when the EF3 breaker pulled out before t=0.

A number of high power ICRF shots in the afternoon disrupted early, with the lower left corner of J-port glowing. After reducing the power from J-port, this problem went away. We also had some shots with serious early hard x-rays, which did not appear to correlate with bouncy startups. There were 2 fizzles.

Scorecard:
Plasmas 26
Fizzles 2
P.S. duds 2

total cycles 30

Session Leader Comments
Feb 19 2008 09:04:07:230AM1080219001Greg WallaceNo plasma.
Feb 19 2008 09:59:17:843AM1080219002Greg WallaceTrip seems to be due to high intrinsic reflection on 14T. No signs of arcing. Will increase plasma density to 4.5e19 on nl_04 and increase to 115kW per klystron.
Feb 19 2008 10:05:45:137AM1080219003Greg WallaceClean shot at 115kW per klystron. Moving on to 135kW per klystron.
Feb 19 2008 10:23:15:450AM1080219004Greg WallaceArc in column 9 between Magic T and Pant Leg at 135kW per klystron. This column has not had its phase shifter replaced. Will go down to 125kW per klystron for next shot.
Feb 19 2008 10:32:34:337AM1080219005Greg WallaceClean shot at 125kW per klystron. Will increase all klystrons except A2V1 to 140kW. A2V1 will be set to 130kW.
Feb 19 2008 10:44:16:663AM1080219006Greg WallaceClean shot. Keeping A1V2 at 130kW, but increasing all other klystrons to 150kW. Also moved launcher in slightly.
Feb 19 2008 10:57:05:570AM1080219007Greg WallaceAnother clean shot. Will increase to 160kW per klystron except on A2V1.
Feb 19 2008 11:36:35:333AM1080219008Greg WallaceClean shot at 160kW per klystron. Next shot will increase to 170kW per klystron. LH net power signal not accurate due to missing jungle gym signals.
Feb 19 2008 12:17:43:677PM1080219009Greg WallaceNo plasma.
Feb 19 2008 12:32:23:130PM1080219010Greg WallaceClean shot at 925kW net power, 170kW per klystron. Next shot will be 180kW per klystron.
Feb 19 2008 12:44:51:660PM1080219011Greg WallaceArc in column 5 between Magic T and Pant Leg splitter. Next shot will keep all klystrons the same but decrease power to 160kW on A1V3.
Feb 19 2008 01:11:21:177PM1080219012Greg WallaceNearly 1MW net power. Trip seems to be due to high reflection on 5T, not arcing. Next shot will turn up A1V3 slightly.
Feb 19 2008 01:09:20:207PM1080219013Greg WallaceTrip seems to be due to high reflection, not arcing. Almost a clean shot at 1MW! Turning run over to Steve Wolfe for the afternoon.
Feb 19 2008 01:33:58:267PM1080219014Steve Wolfe
Shot#14: Starting MP#526 (low density H-mode)
Starting from 1080214017, change zcur and zxu
and nl04 gain off.

Got 3MW of rf, lots of short h-modes.
Density is rising with rf, gets over 5e19 before h-mode start
ssep is ~ -1 to -2mm. 

Next: delay rf to 0.4sec, move zcur down. 

Feb 19 2008 01:46:05:373PM1080219015Steve Wolfe
Shot#15: delay rf to 0.4sec, move zcur down 2mm
two big bounces in startup, then almost lose it at .24sec
marfe until after rf comes on. 
Density rises during runaway dump, current bite. 
Lots of h-modes, density never above nl04=1e20, but they are rising.

next: try again without runaways


Feb 19 2008 01:54:45:477PM1080219016Steve Wolfe
Shot#16: try again without runaways

Better, no h-modes, 3MW steady, nl04 goes from 4 to 5e19 during rf
Still one bounce in startup and some runaways. 

Next: go for a pellets 

Feb 19 2008 02:09:55:900PM1080219017Steve Wolfe
Shot#17:  go for pellets, one at 0.5, another at 0.8
Lots of early runaways and a disruption. 
locked mode at .38 or so. Disrupts at .46, just after rf 

No bounce on this one, but has runaways anyway. May need to 
raise gas some. 

Feb 19 2008 02:23:56:027PM1080219018Steve Wolfe
Shot#18: try again
disrupts at 1.2sec
No dport, got two fragments 
locked mode at .66sec. Density ~2.5e19 too low.
runaways start before rf. 




Feb 19 2008 02:41:48:547PM1080219019Steve Wolfe
Shot#19: Disrupts at 1.1sec 
No h-mode, pellets hardly noticeable on density,
but trip the rf. nl04 is up to 4.5e19
Pg3 is at 20V for first 0.5sec, total around 7Torr-l

next: put first pellet in at 0.35sec



Feb 19 2008 02:46:08:973PM1080219020Steve Wolfe
Shot#20: try with a pellet before rf. 
fizzle. probably need to start dropping the prepuff




Feb 19 2008 03:04:22:837PM1080219021Steve Wolfe
Shot#21: try again with a pellet before rf. 
For this shot, decrease pg4 from 65 to 60ms

disruption at .65sec, no pellet (LPI gate valve closed)
got a couple little H-modes as the density goes over 5e19

next: leave pellet at 0.35sec, add 10ms pg3 puff at 0.5sec



Feb 19 2008 03:10:12:390PM1080219022Steve Wolfe
Shot#22: leave pellet at 0.35sec, add 10ms pg3 puff at 0.5sec
and drop earlier pg3 from 20 to 10V.
fizzle. 



Feb 19 2008 03:30:14:867PM1080219023Steve Wolfe
Shot#23: leave pellet at 0.35sec, add 10ms pg3 puff at 0.5sec
and drop earlier pg3 from 20 to 10V. (combine 2a and 2b in one shot,
it's getting late). 

short, disruption at .32 before anything, shortly after it diverts. 

next: put back the 20V on pg3 before .5sec





Feb 19 2008 03:44:24:713PM1080219024Steve Wolfe
Shot#24: leave pellet at 0.35sec, add 10ms pg3 puff at 0.5sec. (combine 2a and 2b in one shot,it's getting late). 

another short shot, got to .36, I think maybe that was the pellet. 
It had runaways earlier, no bounce. PF breaker pulled after the disruption,
looks like a problem on oh1

This one had a locked mode from very early. 




Feb 19 2008 04:00:46:653PM1080219025Steve Wolfe
Shot#25: turn off pellets, just use gas puff. 
Disrupts at 0.7sec, maybe see a little h-mode at 0.55,
just after density rise that may be from the gas puff. 

next: gas puff up to 20msec


Feb 19 2008 04:13:35:153PM1080219026Steve Wolfe
Shot#26:  gas puff up to 20msec
another disruption, earlier this time

got the gas puff, very short h-mode, then it disrupts. 
J drops out, than comes back just before disruption.

Next: reduce power to 2.5MW, raise puff to 30ms

Feb 19 2008 04:29:19:843PM1080219027Steve Wolfe
Shot#27:  gas puff up to 30msec
full length, no h-mode. rf stays on to 1.2
density drops from 3.5 to 1.5e19 after rf turns off. 
gobs of runaways at the end. 

next: puff up to 40msec, extend rf to end of pulse.

Feb 19 2008 04:38:41:260PM1080219028Steve Wolfe
Shot#28:  gas puff up to 40msec
lots of early runaways, saturating,
puff got nl04 up to 6e19, but no h-mode.

next: raise power back to 3MW

Feb 19 2008 04:54:43:713PM1080219029Steve Wolfe
Shot#29:  gas puff still at 40msec, put back 0.5MW of J
Still early runaways. still no h-mode. 
These runaways seem to be killing it. 

next: put in a second puff at 0.9sec, increase seg1 puff to try
to kill off runaways


Feb 19 2008 05:28:32:520PM1080219030Steve Wolfe
Shot#30: put in a second puff at 0.9sec after runaways, 
increase seg1 puff to try to kill off runaways

still some early runaways, but they went away sooner
Got the h-modes back, following the gas puff, but they were once 
again multiple h-modes which die of radiation. This shot looks 
a lot like 14 and 15, except that the fueling to get above threshold
is from the gas valve instead of from the antennas. Nebar is below 
1.5e20 even right after the puffs, gets down to 1.1e20/m^3 before the
second puff.

During the repetitive h-modes, the rate of density rise
is nebar_dot~7e20/m^3/sec and doesn't seem to change much 
over the 1sec of h-modes. The edge neutral pressure does go up
at each puff, from .01mTorr before the first puff to .027 after,
then to .034 after the second puff; there is a small pumpout between
puffs. The ratiomatic pressure drops during each h-mode, then recovers.


Physics Operator Comments
Feb 19 2008 09:24:24:300AM1080219001Earl Marmarload from 1080123025
import segment 1 from 1080215004 into segment 1
reduce early PG3 puff slightly (segment 1)

PS dud
PF breaker pulled before t=0
power supply current traces look almost identical to 1080215027

expect a delay while the engineers investigate the OH2L power supply
Feb 19 2008 10:03:00:647AM1080219002Earl Marmartweak early gas puff and early segment 2 nl_04 programming
enable argon, 125 msec puff starting at .3 seconds

plasma
startup looks ok
lots of hards during and after LHCD
Feb 19 2008 10:10:46:037AM1080219003Earl Marmarincrease nl_04 target to 4.5e19 (from 3.0e19)
increase argon puff to 200 msec (starting at 0.3 s)
enable LPI (planning to inject after 1.7 s)

plasma
some early hards this time
no pellet
Feb 19 2008 10:21:10:717AM1080219004Earl Marmaradd 1 msec to prefill puff (now 24 msec)

plasma
hesitation in current rise at 150 kA
early hards essentially gone
Feb 19 2008 10:32:25:273AM1080219005Earl Marmarno pcs changes

plasma
some early hards again
tiny Li pellet at 1.72 s
Feb 19 2008 10:54:08:207AM1080219006Earl Marmarno pcs changes

plasma
2 Li pellets, then disrupt at about .2 MA
Feb 19 2008 11:16:39:700AM1080219007Earl Marmarno pcs changes

plasma
Feb 19 2008 11:16:56:793AM1080219008Earl Marmarno pcs changes

plasma
Feb 19 2008 12:18:15:927PM1080219009Earl Marmarlong delay prior to this shot for data acquisition issues
also had a cell access for the cryopump

no pcs changes
PS dud
EF3 breaker pulled before t=0
Feb 19 2008 12:31:15:147PM1080219010Earl Marmarno pcs changes

plasma

over 0.9 MW net coupled LH
Feb 19 2008 12:57:29:597PM1080219011Earl Marmarno pcs changes

plasma

close to 1 MW coupled LH power before it arced
Feb 19 2008 01:02:28:213PM1080219012Earl Marmarno pcs changes

plasma
Feb 20 2008 04:27:11:300PM1080219013Earl Marmaradd 2 msec to prefill puff

plasma
close to 1 MW coupled LH power
Feb 19 2008 01:29:21:603PM1080219014Earl Marmarswitching MPs

reload 1080214017
import segment 1 from 1080219013
increase prefill puff to 35 msec
ZXU to +.02 (from +.04)
ZCUR to -.004 (from -.009)

cryopump should be on

plasma
bouncy startup, early hards

density rises with ICRF, then multiple h-modes

some glowing on the LH launcher (did they not pull it back?)
Feb 19 2008 01:43:29:743PM1080219015Earl Marmarprefill puff to 50 msec
ZCUR to -.006

plasma
lots of early hards, then a marfe

multiple h-modes
Feb 19 2008 01:54:48:947PM1080219016Earl Marmarprefill puff to 60 msec

plasma
still early hards
marfe not so bad

no h-mode this time
Feb 19 2008 02:09:50:070PM1080219017Earl Marmarprefill puff to 65 msec

plasma
better looking startup (no obvious bounce)
lots of early hards and reports of an early locked mode
disrupts shortly after ICRF turns on
Feb 19 2008 02:52:44:777PM1080219018Earl Marmaradd a little to the segment 1 PG3 puff
move the A-coil turn-on time to 0.2 s (was 0.3)

plasma
got 2 pellets, but very little density rise with each

disrupt at 1.15


Feb 19 2008 02:51:18:573PM1080219019Earl Marmarpg3 puff program to 20 in segment 2

plasma
got 2 pellets, but very little density rise
disrupts after 1 second
Feb 19 2008 02:50:05:057PM1080219020Earl Marmarno pcs changes

fizzle
Feb 19 2008 03:06:42:717PM1080219021Earl Marmarprefill puff to 60 msec (from 65)

plasma

disrupt at .68 s
Feb 19 2008 03:11:23:503PM1080219022Earl Marmarreduce early segment 2 PG3 puff to 10, add 10 msec puff, full on, from .501 to .511 s

fizzle
Feb 19 2008 03:33:58:997PM1080219023Earl Marmarprefill puff to 55 msec

plasma
disruption at .32 s
Feb 19 2008 03:39:42:580PM1080219024Earl Marmarincrease early segment 2 PG3 puff back to 20

plasma

disrupt .36 s (possibly right after a Li pellet)
Feb 19 2008 04:07:06:240PM1080219025Earl Marmarno pcs changes

plasma

disrupt at .71 s
Feb 19 2008 05:15:16:363PM1080219026Earl Marmarmove rxl in by 5 mm
increase PG3 gas puff from .5 to .52 sec, 100.

plasma
disrupt at .622 s

On several of these shots, the lower left corner of J-port is lighting up and spewing, and seen on the wide angle tv view from f-port
Feb 19 2008 05:15:46:443PM1080219027Earl Marmarreduce prefill puff to 50 msec (from 55 msec)

raise the segment 2 PG3 pulse, now 30 msec at 100, still starting at .5 s

plasma, full length, (ICRF power reduced to 2.4 MW, j-port off)

very serious hard x-rays after the ICRF turns off, through to the very end of the pulse
synchrotron radiation shows up at the end of the ramp-down.
Feb 19 2008 04:39:52:370PM1080219028Earl Marmarsegment 2 PG3 pulse-puff to 40 msec (@100), still starting at .5 seconds

plasma
full length

serious hards early this time

no h-mode
Feb 19 2008 04:57:40:420PM1080219029Earl Marmarprefill puff to 55 msec (from 50 msec)

plasma
full length
still early hards
no h-mode
Feb 19 2008 05:04:47:087PM1080219030Earl Marmarincrease prefill puff to 57 msec
increase segment 1 PG3 puff
add second segment 2 PG3 pulse, 40 msec, amplitude 100, starting at .9 seconds

plasma
full length
early hards, but not quite as bad
looks like 17 transitions into and out of h-mode

Engineering Operator Comments
ShotTimeTypeStatusComment
109:00:52:773AMPlasmaBadOH2L single phased gate drive board
209:49:32:910AMPlasmaOk
310:02:06:427AMPlasmaOk
410:14:39:153AMPlasmaOk
510:27:23:143AMPlasmaOk
610:39:55:923AMPlasmaOk
710:52:34:063AMPlasmaOk
811:05:06:360AMPlasmaOk
912:12:40:407PMPlasmaBadlost aux power on EF 3 in "check"
1012:25:10:873PMPlasmaOk
1112:37:44:560PMPlasmaOk
1212:50:26:370PMPlasmaOk
1301:03:05:590PMPlasmaOk
1401:22:13:377PMPlasmaOk
1501:35:21:767PMPlasmaOk
1601:47:54:860PMPlasmaOk
1702:00:31:107PMPlasmaOk
1802:13:06:793PMPlasmaOk
1902:25:56:357PMPlasmaOk
2002:42:33:733PMPlasmaOk
2102:55:00:047PMPlasmaOk
2203:07:43:247PMPlasmaOk
2303:20:34:997PMPlasmaOk
2403:32:59:293PMPlasmaBadOH1 type 1 fault Fuses checked OK
2503:53:58:067PMPlasmaOk
2604:06:28:220PMPlasmaOk
2704:18:58:220PMPlasmaOk
2804:31:26:047PMPlasmaOk
2904:44:45:983PMPlasmaOk
3004:57:46:797PMPlasmaOk

System Availability
Feb 19 2008 09:00:45:087AM
SystemAvailableCommentAvailability
Changed
OwnerDescriptionWho Can
Change
Active MHDyesFully operationalMar 28 2007 09:19PM (sears)Joe SnipesActive MHD Antennasears,snipes
BESyesvertical array of six views at R ~ 87.3 cm, radial array of three views out to R ~ 89 cm, both at outboard midplane. Three discrete fiber views of beam at R ~ 70.0, 76.5 and 82.5 cm.Feb 06 2007 10:00AM (bravenec)Ron BravenecBeam Emission Spectroscopybravenec,rowan
BolometersyesDiode 2pi working fine, foil 2pi being low-pass filtered to remove noise. Outboard miidplane AXUV fine. Midplane foils working fine, but need to fill tree with calibrations. 2D AXUV arrays are being digitized but need further debugging and calibration.Dec 19 2007 07:16PM (mlreinke)Matt ReinkeBolometershutch,mlreinke
BoronizationnoFirst Boronization 5/9/07 Bottle has been removed from the cellSep 14 2007 12:42PM (dekow)Jim IrbyBoronizationdekow,irby
CNPAyesSingle channel CNPA available as of 12/1707Dec 17 2007 05:48PM (parker)Ron ParkerCompact Neutral Analyzerparker
Cryopump - Upper DivertoryesCryopump is operationalDec 11 2007 10:13AM (labombard)Brian LaBombardUpper Divertor Cryopumpirby,labombard
CXRSyesThe pedestal toroidal array was installed, spatially and absolutely calibrated. There are 10 chords intersect the beam at the major_R_range=[74.2:86.3]cm. Spatial resolution: 1.2 cm. The F-top poloidal array was installed and spatially calibrated. There are 19 chords intersect the beam at the major_R_range=[67.8:91.0]cm. Spatial resolution: 1.22 cm.Nov 27 2007 10:21AM (bespam)Bill RowanCharge Exchange Spectroscopybespam,blip,rachmcd,rowan
D Alphayes\ha2_bright and \SPECTROSCOPY::TOP.VUV.VIS_SIGNALS:MCP_VIS_SIG1 are availableNov 26 2007 04:23PM (terry)Jim TerryBalmer Alpha Monitorirby,terry,wolfe
Dalsayesoptics repaired, camera re-installed, and view has been re-calibratedNov 27 2007 09:54AM (marmar)Earl MarmarVisible Bremsstrahlungmarmar
Disruption Mitigationno Nov 20 2007 10:47PM (granetz)Robert GranetzGas Jetgranetz,whyte
Divertor IRno Mar 06 2007 10:50AM Glen WurdenDivertor IR Digital Videogwurden,terry
Divertor IR Spectroscopyno Mar 06 2007 10:51AM Glen WurdenDivertor IR Spectroscopygwurden,terry
DNBno Nov 20 2007 10:47PM (granetz)Robert GranetzDiagnostic Neutral Beambeals,granetz
FRC-ECEnoProblem with LO'sJan 10 2008 01:17PM (phillips)Perry PhillipsHeterodyne ECE-32 channelsphillips
G-Side RatiomaticyesGauge is operational and calibrated against G-side MKS on shot#1071127002Nov 27 2007 01:25PM (labombard)Brian LaBombardG-side ratiomatic ionization gaugelabombard,toland
GPCyesAll 9 channels operational as of new year.Jan 03 2008 09:31AM (hubbard)Amanda HubbardECE Polychromaterhubbard,schmidt
GPC2yesMost channels operational.Jan 02 2008 12:22PM (hubbard)Amanda HubbardECE Polychromaterhubbard,schmidt
GPInoNeither the Xpt-view nor the midplane-view camera is operational. Nov 26 2007 04:25PM (terry)Jim TerryGas Puff Imagingterry,zweben
H/DyesShould be operational for the FY08 campaignNov 27 2007 09:54AM (marmar)Earl MarmarH/D Ratiomarmar
Hirex Jryes Mar 06 2007 08:59AM (rice)John RiceHigh Resolution X-Rayince,rice
Hirex SrnoBe Window has a leak and so the gate valve is closedNov 23 2007 12:50PM (ince)John RiceHigh Resolution X-Rayince,rice
HXRyesSomething might be wrong with channel 26; all others working fine.Mar 23 2007 10:43AM (schmidt)Ron ParkerHard X-Ray Arrayparker,schmidt
ICRF D-Antennayesavailable (quarter-wave transformer for pre-matching)Dec 11 2007 09:01AM (ylin)Steve WukitchD-port antennawukitch,ylin
ICRF E-Antennayesavailable (with FFT for automatical matching)Dec 11 2007 09:01AM (ylin)Steve WukitchE-port antennawukitch,ylin
ICRF J-Antennayesnormally in [0,pi,pi,0] phase for heating. current drive phase available if requested.Dec 11 2007 09:03AM (ylin)Steve WukitchJ-port antennawukitch,ylin
Lower HybridyesBody I Fault Circuits Repaired and tested. High power tests completedDec 05 2007 06:40PM (dterry)Ron ParkerLower Hybriddterry,parker
LPIyes1/9/08Jan 09 2008 03:23PM (bose)Earl MarmarLithium Pellet Injectorbose,marmar
Ly-alphayesMidplane working fine, emissivity profiles being stored in tree, but still need to apply in-vessel calibrations to data. WB1-LY being digitized, but not processed in tree.Dec 09 2007 06:53PM (mlreinke)Matt ReinkeLyman alpha cameraslabombard,mlreinke
McPhersonnoProblems with detector. No quantitative line brightnesses possible. Qualitative tasks like impurity identification possible.Feb 15 2008 02:07PM (mlreinke)Jim TerryVUV Spectrometermlreinke,terry
MichelsonyesWorking, moderate speed for now.Jan 02 2008 01:19PM (hubbard)Amanda HubbardECE Te Profileshubbard,schmidt
MKSyesE-Top, E-Bottom, F-top (cryo), G-side, and B-bottom are operational. F-top gauge has a 'sniffer tube' to measure pressures in cryopump gas box.Mar 20 2007 06:42PM (g)Brian LaBombardBaratron pressure gaugeslabombard
MLPnoInitial tests on the A-port scanning probe went well. We need to take care of some control glitches that caused some component failures. May 30 2007 08:01PM (labombard)Brian LaBombardMirror Langmuir Probe Electronics Systemlabombard
MSEnoWe are basically awaiting the DNB & its new aperture. MSE itself is OK. 5 photo detectors have been shipped out for repair, so currently only 5 channels are available. We expect the full channels will be available late in Jan 08.Jan 04 2008 01:11PM (jinseok)Steve ScottMotional Stark Effectjinseok,sscott
NeutronsyesVoltage is on for the He3 bank. Voltage will be turned on for the global system at the first plasma attempts.Nov 26 2007 08:31AM (fiore)Catherine FioreNeutron Detectorsfiore
Neuts and Hardsyescalibration unchanged from 2007 campaignDec 04 2007 08:56PM (irby)Jim IrbyX-Ray/Neutron Detector at K-Horirby
NINJAyesAll capillaries displayed by the NINJA_CONTROL GUI have been tested. Nov 26 2007 04:26PM (terry)Brian LaBombardNINJA gas pufflabombard,terry
PCInoBoth CO2 and HeNe Lasers are disabled----- safe for machine entry.Sep 14 2007 03:21PM (lianglin)Miklos PorkolabPhase Contrast Imagingedlund,lianglin,ntsujii,porkolab
Penning GaugesyesAll gauges except B_DivL are operatingNov 27 2007 01:31PM (labombard)Brian LaBombardPenning Ionization Gaugeslabombard
Plasma TVyesWIDE1, WIDE2 (chan 33), DANT, JANT and DIV are operational.Nov 26 2007 04:27PM (terry)Jim TerryVideo of plasma via several camerasdekow,irby,terry,wolfe
PolarimeternoSafe for Machine EntrySep 14 2007 12:17PM (irby)Jim IrbyC-Mod Polarimeterirby
Probe Array - ISDyesOperationalNov 27 2007 01:40PM (labombard)Brian LabombardInner Lower Divertor Probe Arraylabombard
Probe Array - LHyesOperationalNov 27 2007 01:40PM (labombard)Brian LaBombardLower Hybrid Probe Arraylabombard
Probe Array - OSDyesOperationalNov 27 2007 01:41PM (labombard)Brian LaBombardOuter Lower Divertor Probe Arraylabombard
Probe Array - UDIVyesOperationalNov 27 2007 01:41PM (labombard)Brian LaBombardUpper Divertor Probe Arraylabombard
Reflectometeryes50, 60, 75 and 88GHz channels are connected and being tested for the campaignDec 18 2007 10:28AM (dominguez)Earl MarmarReflectometerdominguez,marmar
Scanning Probe - ASPyesOperational, but needs to be checked with plasma.Nov 27 2007 01:45PM (labombard)Brian LaBombardA-Port Scanning Probelabombard
Scanning Probe - FSPyesFSP is operationalDec 11 2007 10:13AM (labombard)Brian LaBombardF-Port Scanning Probelabombard
Scanning Probe - WASPyesA- and K-port WASP electrodes have been replaced/tested.Nov 27 2007 01:44PM (labombard)Brian LaBombardInner Wall Scanning Probelabombard,nsmick
TCIyesCO2 Laser is on --- initial alignment completeNov 16 2007 01:23PM (irby)Jim IrbyTwo-Color Interferometerirby,murray
TS - Coreyes8 polychromators, 1 laser. Density is calibrated for YAG2. YAG1 is not calibrated yet. Jan 17 2008 11:51PM (yma)Jerry HughesCore Thomson scatteringjwhughes,yma
TS - EdgeyesSystem is working. Density is derived with last year's calibration, and should be good to within ~20%. Jan 18 2008 07:27AM (jwhughes)Jerry HughesMillimeter resolution edge Thomson scatteringjwhughes,yma
Vispecno350 and 670 nm, 4 spatial channelsNov 28 2007 09:58AM (agraf)Alex GrafVisible Spectrometeragraf
XTOMOyessystem operationalJan 10 2008 11:41AM (mlreinke)Bob GranetzX-Ray Tomographygranetz,mlreinke


Feb 19 2008 10:02:06:677AM
SystemAvailableCommentAvailability
Changed
OwnerDescriptionWho Can
Change
Active MHDyesFully operationalMar 28 2007 09:19PM (sears)Joe SnipesActive MHD Antennasears,snipes
BESyesvertical array of six views at R ~ 87.3 cm, radial array of three views out to R ~ 89 cm, both at outboard midplane. Three discrete fiber views of beam at R ~ 70.0, 76.5 and 82.5 cm.Feb 06 2007 10:00AM (bravenec)Ron BravenecBeam Emission Spectroscopybravenec,rowan
BolometersyesDiode 2pi working fine, foil 2pi being low-pass filtered to remove noise. Outboard miidplane AXUV fine. Midplane foils working fine, but need to fill tree with calibrations. 2D AXUV arrays are being digitized but need further debugging and calibration.Dec 19 2007 07:16PM (mlreinke)Matt ReinkeBolometershutch,mlreinke
BoronizationnoFirst Boronization 5/9/07 Bottle has been removed from the cellSep 14 2007 12:42PM (dekow)Jim IrbyBoronizationdekow,irby
CNPAyesSingle channel CNPA available as of 12/1707Dec 17 2007 05:48PM (parker)Ron ParkerCompact Neutral Analyzerparker
Cryopump - Upper DivertoryesCryopump is operationalDec 11 2007 10:13AM (labombard)Brian LaBombardUpper Divertor Cryopumpirby,labombard
CXRSyesThe pedestal toroidal array was installed, spatially and absolutely calibrated. There are 10 chords intersect the beam at the major_R_range=[74.2:86.3]cm. Spatial resolution: 1.2 cm. The F-top poloidal array was installed and spatially calibrated. There are 19 chords intersect the beam at the major_R_range=[67.8:91.0]cm. Spatial resolution: 1.22 cm.Nov 27 2007 10:21AM (bespam)Bill RowanCharge Exchange Spectroscopybespam,blip,rachmcd,rowan
D Alphayes\ha2_bright and \SPECTROSCOPY::TOP.VUV.VIS_SIGNALS:MCP_VIS_SIG1 are availableNov 26 2007 04:23PM (terry)Jim TerryBalmer Alpha Monitorirby,terry,wolfe
Dalsayesoptics repaired, camera re-installed, and view has been re-calibratedNov 27 2007 09:54AM (marmar)Earl MarmarVisible Bremsstrahlungmarmar
Disruption Mitigationno Nov 20 2007 10:47PM (granetz)Robert GranetzGas Jetgranetz,whyte
Divertor IRno Mar 06 2007 10:50AM Glen WurdenDivertor IR Digital Videogwurden,terry
Divertor IR Spectroscopyno Mar 06 2007 10:51AM Glen WurdenDivertor IR Spectroscopygwurden,terry
DNBno Nov 20 2007 10:47PM (granetz)Robert GranetzDiagnostic Neutral Beambeals,granetz
FRC-ECEyes16 Channels now working - low freq. side - outer RmidsFeb 19 2008 09:56AM (phillips)Perry PhillipsHeterodyne ECE-32 channelsphillips
G-Side RatiomaticyesGauge is operational and calibrated against G-side MKS on shot#1071127002Nov 27 2007 01:25PM (labombard)Brian LaBombardG-side ratiomatic ionization gaugelabombard,toland
GPCyesAll 9 channels operational as of new year.Jan 03 2008 09:31AM (hubbard)Amanda HubbardECE Polychromaterhubbard,schmidt
GPC2yesMost channels operational.Jan 02 2008 12:22PM (hubbard)Amanda HubbardECE Polychromaterhubbard,schmidt
GPInoNeither the Xpt-view nor the midplane-view camera is operational. Nov 26 2007 04:25PM (terry)Jim TerryGas Puff Imagingterry,zweben
H/DyesShould be operational for the FY08 campaignNov 27 2007 09:54AM (marmar)Earl MarmarH/D Ratiomarmar
Hirex Jryes Mar 06 2007 08:59AM (rice)John RiceHigh Resolution X-Rayince,rice
Hirex SrnoBe Window has a leak and so the gate valve is closedNov 23 2007 12:50PM (ince)John RiceHigh Resolution X-Rayince,rice
HXRyesSomething might be wrong with channel 26; all others working fine.Mar 23 2007 10:43AM (schmidt)Ron ParkerHard X-Ray Arrayparker,schmidt
ICRF D-Antennayesavailable (quarter-wave transformer for pre-matching)Dec 11 2007 09:01AM (ylin)Steve WukitchD-port antennawukitch,ylin
ICRF E-Antennayesavailable (with FFT for automatical matching)Dec 11 2007 09:01AM (ylin)Steve WukitchE-port antennawukitch,ylin
ICRF J-Antennayesnormally in [0,pi,pi,0] phase for heating. current drive phase available if requested.Dec 11 2007 09:03AM (ylin)Steve WukitchJ-port antennawukitch,ylin
Lower HybridyesBody I Fault Circuits Repaired and tested. High power tests completedDec 05 2007 06:40PM (dterry)Ron ParkerLower Hybriddterry,parker
LPIyes1/9/08Jan 09 2008 03:23PM (bose)Earl MarmarLithium Pellet Injectorbose,marmar
Ly-alphayesMidplane working fine, emissivity profiles being stored in tree, but still need to apply in-vessel calibrations to data. WB1-LY being digitized, but not processed in tree.Dec 09 2007 06:53PM (mlreinke)Matt ReinkeLyman alpha cameraslabombard,mlreinke
McPhersonnoProblems with detector. No quantitative line brightnesses possible. Qualitative tasks like impurity identification possible.Feb 15 2008 02:07PM (mlreinke)Jim TerryVUV Spectrometermlreinke,terry
MichelsonyesWorking, moderate speed for now.Jan 02 2008 01:19PM (hubbard)Amanda HubbardECE Te Profileshubbard,schmidt
MKSyesE-Top, E-Bottom, F-top (cryo), G-side, and B-bottom are operational. F-top gauge has a 'sniffer tube' to measure pressures in cryopump gas box.Mar 20 2007 06:42PM (g)Brian LaBombardBaratron pressure gaugeslabombard
MLPnoInitial tests on the A-port scanning probe went well. We need to take care of some control glitches that caused some component failures. May 30 2007 08:01PM (labombard)Brian LaBombardMirror Langmuir Probe Electronics Systemlabombard
MSEnoWe are basically awaiting the DNB & its new aperture. MSE itself is OK. 5 photo detectors have been shipped out for repair, so currently only 5 channels are available. We expect the full channels will be available late in Jan 08.Jan 04 2008 01:11PM (jinseok)Steve ScottMotional Stark Effectjinseok,sscott
NeutronsyesVoltage is on for the He3 bank. Voltage will be turned on for the global system at the first plasma attempts.Nov 26 2007 08:31AM (fiore)Catherine FioreNeutron Detectorsfiore
Neuts and Hardsyescalibration unchanged from 2007 campaignDec 04 2007 08:56PM (irby)Jim IrbyX-Ray/Neutron Detector at K-Horirby
NINJAyesAll capillaries displayed by the NINJA_CONTROL GUI have been tested. Nov 26 2007 04:26PM (terry)Brian LaBombardNINJA gas pufflabombard,terry
PCInoBoth CO2 and HeNe Lasers are disabled----- safe for machine entry.Sep 14 2007 03:21PM (lianglin)Miklos PorkolabPhase Contrast Imagingedlund,lianglin,ntsujii,porkolab
Penning GaugesyesAll gauges except B_DivL are operatingNov 27 2007 01:31PM (labombard)Brian LaBombardPenning Ionization Gaugeslabombard
Plasma TVyesWIDE1, WIDE2 (chan 33), DANT, JANT and DIV are operational.Nov 26 2007 04:27PM (terry)Jim TerryVideo of plasma via several camerasdekow,irby,terry,wolfe
PolarimeternoSafe for Machine EntrySep 14 2007 12:17PM (irby)Jim IrbyC-Mod Polarimeterirby
Probe Array - ISDyesOperationalNov 27 2007 01:40PM (labombard)Brian LabombardInner Lower Divertor Probe Arraylabombard
Probe Array - LHyesOperationalNov 27 2007 01:40PM (labombard)Brian LaBombardLower Hybrid Probe Arraylabombard
Probe Array - OSDyesOperationalNov 27 2007 01:41PM (labombard)Brian LaBombardOuter Lower Divertor Probe Arraylabombard
Probe Array - UDIVyesOperationalNov 27 2007 01:41PM (labombard)Brian LaBombardUpper Divertor Probe Arraylabombard
Reflectometeryes50, 60, 75 and 88GHz channels are connected and being tested for the campaignDec 18 2007 10:28AM (dominguez)Earl MarmarReflectometerdominguez,marmar
Scanning Probe - ASPyesOperational, but needs to be checked with plasma.Nov 27 2007 01:45PM (labombard)Brian LaBombardA-Port Scanning Probelabombard
Scanning Probe - FSPyesFSP is operationalDec 11 2007 10:13AM (labombard)Brian LaBombardF-Port Scanning Probelabombard
Scanning Probe - WASPyesA- and K-port WASP electrodes have been replaced/tested.Nov 27 2007 01:44PM (labombard)Brian LaBombardInner Wall Scanning Probelabombard,nsmick
TCIyesCO2 Laser is on --- initial alignment completeNov 16 2007 01:23PM (irby)Jim IrbyTwo-Color Interferometerirby,murray
TS - Coreyes8 polychromators, 1 laser. Density is calibrated for YAG2. YAG1 is not calibrated yet. Jan 17 2008 11:51PM (yma)Jerry HughesCore Thomson scatteringjwhughes,yma
TS - EdgeyesSystem is working. Density is derived with last year's calibration, and should be good to within ~20%. Jan 18 2008 07:27AM (jwhughes)Jerry HughesMillimeter resolution edge Thomson scatteringjwhughes,yma
Vispecno350 and 670 nm, 4 spatial channelsNov 28 2007 09:58AM (agraf)Alex GrafVisible Spectrometeragraf
XTOMOyessystem operationalJan 10 2008 11:41AM (mlreinke)Bob GranetzX-Ray Tomographygranetz,mlreinke