Alcator C-Mod Run 1120214 Information

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Miniproposals
Miniproposal:690
Date Filed: 1/11/2012
Title:Implementation of new impurity seeding systems
First Author:Bruce Lipschultz
Session Leader:Bruce Lipschultz (shots 1-32)

Operators
Session leader(s):Bruce Lipschultz
Physics operator(s):Ian Hutchinson
Engineering operator(s):Bill Cochran,Andy Pfeiffer,Ed Fitzgerald

Engineering Operator Run Comment
MP 690: 'Implementation of new impurity seeding systems'

Session Leader Plans
Entered: Feb 13 2012 06:44:46:037PM
Author: Bruce Lipschultz
MP 690: 'Implementation of new impurity seeding systems'

SL: B. Lipschultz
PO: I. Hutchinson

boronization overnight
5.4T, 800 kA, lower single-null
RF power as high as is reproducible. We will want it on as soon as possible after reaching current flattop and going to around inversion.

Fill H-bottom plenum to 15 PSI N2.
Fill B-side_lower plenum to 20 PSI N2

nl04 ~0.8e20 before RF power hits

The plan today is to scan the puff rate of N2 for at least 2 valves - the new impurity seeding tube under the BC divertor section, and the usual 'B-side-lower'. We may decide in the first part of the run to go with some combination of the new B-div seeding tube and a similar one under the H-J divertor ('H-div').

part B1 �?? Comparison of seeding locations for N2. 800 kA, EDA discharges (start with 1101216011/012). RF power of order 3 MW, as much as possible. We are considering one RF pulse from 0.5 to 1.5s.

B1.1: Post boronization recovery with adjustment of the seeding levels with B-div and H-div puffing (start with 100 ms pulsewidth each at 20V and 15 PSI N2) till we have enough signal on core and divertor spectrometers �?? (~ 4 discharges?) and the divertor is not detached. The suggestion is to start the ICRF as soon as we hit flattop (say, 0.5 seconds) with the B-div triggered 50 ms later (we think it takes 50 ms to get in) so that the N2 hits some 100 ms after the H-mode starts. H-div would be pulsed at 1.3 seconds. Once the plenum pressure and pulse width is set we can then compare B-div + H-div together (lower the duty_factor ~ by 2 on each) to what was needed for them separately. That would be compared to B-div by itself. PO �?? we need to pay attention to rampdown and disruptions. We may need to shut down the gas early or run the RF longer or plasma current flattop longer.

B1.2: Based on the voltage and pulsewidth settings determined in B1.1 we can set up B-div (or B-div + H-div) and B-side lower (20 PSI) for a comparison. a) Pulse B-side-lower first (20 %) at 0.55s as in B1.1 and B-div (20 %) at 1.3s. b) The next shot would be the reverse order. c) Assuming the data is ok we keep the same order and go to the next puff rate and keep the same order. d) reverse the order and repeat at the same puff rate. We plan to do this for a total of 5 different puff rates from the minimum determined in step B1.1 to around 20 tl/s (say 5, 8, 12, 16, 20 tl/s which would correspond to 20% through 80%). So ~ 15 discharges assuming 3 needed per pair at the same injection rate. Again, we are hoping to start at a low enough puff rates so that at least one case has the outer divertor attached. The upper range is determined by trying to match the scan done by Matt in 110903020, shown in Fig. 1 of the mp.
3. If time is available and the goal of comparing more puff locations with N2 is more important than Ne tests (part B2) we will finish any comparison of puff locations not accomplished in step 1. We could also make extended puffs (single location) to see if there are any differences to the short puff.

If we get far enough (doubtful) then move to part B2.



Physics Operators Plans
Entered: Feb 13 2012 02:39:44:390PM
Author: Ian Hutchinson
Be my Valentine.

Do overnight boronization in accordance with the Session Leader's plan:

Boronization â??
rmin/rdwell/rmax: 44/75/80 cm tdwell/tsweep: 60/120 s

ECDC PARAMETERS, following boronization:
--gas: He
--Pressure: 1e-4 Torr
--sweep: 45/43/103 cm
--scan: 20/120 s
--duration: three hours

Cryopump should be ready for the run.

Gas: 25 PSI N2 in H-bottom and 30 PSI in B-side plena.
Consult SL Bruce Lipschultz for other special gas puff requirements.

There might be a need for some test gas puff shots before the run starts
with power at the usual time.

Session Leader Summaries
Entered: Feb 17 2012 08:09:23:680AM
Author: Bruce Lipschultz
MP 690: 'Implementation of new impurity seeding systems'

SL: B. Lipschultz
PO: I. Hutchinson

general issues: The first 6-8 discharges were plagued by Mo injections. Something about the boronization may have brought them on.

What we learned -

1) The divertor seeding does lead to more divertor vs the core plasma
radiation than puffing through B-side-lower.

2) Puffing at the closed port (BC) div. seeding valve was somewhat better at
keeping the radiation in the divertor than near an open port (HJ).

3) The amount of N2 puffed was integrated to some extent over shots. This
means that we will need some sort of feedback that takes this into account.

4) The divertor was very difficult to detach up to the nose with today's
plasmas. We are not sure why. We saw clear evidence of the N2 shifting
the divertor plasma to high recycling (drop in Te, increase in ne) with
some amount of pressure loss.

5) Various turbulence were affected by the N2: The QC mode changed frequency
and other modes appeard. This may be important to follow.

6) While the Mo levels in the plasma were affected by the N2 it was not clear whether divertor puffing or main chamber puffing had a stronger effect on lowering Mo. This is partly due to the variable nature of the Mo levels within a given discharge even without N2 puffing. For example, the Mo radiation (MoXXXII) rose and fell during 1120214018 without any outside interference. It may have been the confinement (and QC mode) controlling its transport there.

More later

Physics Operator Summaries
Entered: Feb 14 2012 05:09:44:537PM
Author: Ian Hutchinson
Overview
--------

Today's physoping was a rather successful "recovery" from boronization.
Cryopump was used all day and caused just one fizzle by a burp. That
was the only fizzle. Within a couple of shots we had good RF operation
and steady H-modes. There were however a number of unexplained
injections that caused some trouble and a few disruptions.

Puffing of nitrogen was developed and proved able to control Mo
radiation but eventually cause excess power loss of its own. Shot to
shot nitrogen accumulation was noted.

The shot inherited had a rampdown that also ramped in rcur too
quickly. This caused vertical control disruptions that were fixed by
leaving rcur further out during the rampdown, giving a more vertically
stable plasma.

Scorecard
---------
  Shot,Duration(s),Ipmax(MA),Result  Shot,Duration(s),Ipmax,Result
  |   01   0.000   0.002   Dud     |   02   1.957   0.804   Plasma  |
  |   03   0.530   0.849   Plasma  |   04   1.764   0.838   Plasma  |
  |   05   1.931   0.862   Plasma  |   06   1.931   0.864   Plasma  |
  |   07   0.000   0.032   Fizzle  |   08   0.798   0.845   Plasma  |
  |   09   1.742   0.841   Plasma  |   10   1.729   0.842   Plasma  |
  |   11   1.730   0.844   Plasma  |   12   1.937   0.840   Plasma  |
  |   13   1.505   0.839   Plasma  |   14   1.939   0.839   Plasma  |
  |   15   1.931   0.840   Plasma  |   16   1.560   0.839   Plasma  |
  |   17   1.583   0.837   Plasma  |   18   1.946   0.839   Plasma  |
  |   19   1.942   0.838   Plasma  |   20   1.942   0.837   Plasma  |
  |   21   1.944   0.839   Plasma  |   22   1.944   0.839   Plasma  |
  |   23   1.942   0.839   Plasma  |   24   1.941   0.831   Plasma  |
  |   25   1.062   0.834   Plasma  |   26   1.921   0.820   Plasma  |
  |   27   1.938   0.832   Plasma  |   28   1.934   0.824   Plasma  |
  |   29   1.936   0.837   Plasma  |   30   1.943   0.837   Plasma  |
  |   31   1.937   0.835   Plasma  |   32   1.942   0.835   Plasma  |
 
Date 1120214:  32 shots.  30 plasmas.   1 fizzles.   1 duds.   0 System Error.
        (Plasma = Ip gt 60.0 kA   Dud = H_alpha lt  0.10 V)
Total plasma duration: 52.78 s (exceeding -100 kA)


Session Leader Comments
Feb 14 2012 09:03:29:420AM1120214001Bruce LipschultzNo plasma
Feb 14 2012 09:15:50:483AM1120214002Bruce Lipschultzplasma. H-mode near the end with just J-port. No N2 puffed. Strike point moving up the plate from probe 4 to 6. PO will try to move it down. We will wait on the N2 puff one more shot.
Feb 14 2012 09:22:38:440AM1120214003Bruce LipschultzDisruption shortly after 0.5s. Looks like Mo injection? After a boronization?
Feb 14 2012 09:49:41:863AM1120214004Bruce LipschultzThis one went all the way in H-mode. No N2 puff. Injection mid shot (probably Mo) and the strike point seems a bit low. Next shot move the RF a littleearlier and start the N2 injection:

B-div pulsed at 0.63s and for 0.1 seconds at 25%
H-div pulsed at 1.25s and for 0.1 seconds at 25%
Feb 14 2012 10:05:10:130AM1120214005Bruce LipschultzThis one went all the way in H-mode. 2 N2 puffs. Injection mid shot (probably Mo) and the strike point seems a bit low still but better. :

B-div pulsed at 0.63s and for 0.1 seconds at 35%
H-div pulsed at 1.25s and for 0.1 seconds at 35%
Feb 14 2012 10:35:07:227AM1120214007Bruce Lipschultzfizzle - gas leak or cryopump burp
Feb 14 2012 10:53:36:300AM1120214008Bruce Lipschultzshot started ok but injections killed it.

Both H-div and B-div were on at 100% for 0.1s.

Core NVII screaming up before disruption.

2.15 tl out of B-div which went first before the disruption.
Next shot lower the duty cycle to 60%
Feb 14 2012 11:25:08:710AM1120214009Bruce Lipschultzterrific shot. NII in the divertor and NVII in core - nice traces for each.

Both H-div and B-div were on at 60% for 0.1s.

1.15 tl out of B-div (1.05 for H-div)


Next shot go to the program with B-side-lower (73%) and B-div at 60%. B-side lower will be first and B-div second.


Feb 14 2012 11:24:40:270AM1120214010Bruce LipschultzGood shot other than Mo injectionm between N injections. According to Matt we have a lot of other impurities - Cu and Fl.

NII in the divertor higher with B-div than with B-side-lower (as expected). Core NVII about the same. We got less gas out of B-side-lower so we will repeat and raise B-side-lower to 90% from 73%

1.15 tl out of B-div (0.81 for B-side lower)



Feb 14 2012 11:40:29:103AM1120214011Bruce LipschultzNo Mo injection.
NII in the divertor slightly higher with B-div than with B-side-lower (as expected). Core NVII now higher with B-side lower. We are getting ~ the same tl out of both valves.

Next reverse the order of puffs.



Feb 14 2012 11:53:15:070AM1120214012Bruce LipschultzNo Mo injection.
Reversal of timing of puffs gives as expected. The B-div puff still gives the highest divertor radiation compared to the core. BUT, the divertor is not detaching. So let's go up to 100% on both valves - giving more on B-div than on B-side-lower.



Feb 14 2012 12:21:53:967PM1120214014Bruce LipschultzMo injection.

Moved B-div later and turned B-side lower off in order to see if the slight temperature drop on the J-div probes of the last shot is real.

We now see a temperature drop on both J- and F-divertor probes. In the private flux region it looks detached. Near the separatrix we seem to be cooling the plasma and this trades with higher density - pressure does not really change.

Next, puff H-div and B-div simultaneously to see if we push over to detachment.

Feb 14 2012 12:49:24:280PM1120214015Bruce LipschultzNo Mo injection.

Puffed H-div and B-div simultaneously - signs of detachment initially followed by the density rising in the divertor. Brian says we may have detached and then the death ray comes back.

Try to get more steady state by extending the H-div and B-div to 200 ms and then a lower level pulse (60%) for another 200 ms.
Feb 14 2012 01:17:18:297PM1120214017Bruce LipschultzNo Mo injection but had a transition to lower confinement - still too much N2?

Puffed H-div and B-div simultaneously for 100 ms followed by a 60% puff for another 300 ms. Again, the temperature in the divertor drops, but at some point the density rises as well.

go to no puff since it seems we have too much in the machine. The core NVII is at a level (before the puff) equal to during the puff of earlier shots.
Feb 14 2012 01:55:05:123PM1120214019Bruce LipschultzNo puff again. N levels in the divertor still high. We will go back to the puff. But at lower levels. Just B-div, 100 ms, 100% next shot
Feb 14 2012 01:57:11:807PM1120214020Bruce LipschultzJust B-div, 100 ms, 100% at 0.83, arriving around 0.9. The divertor temperature drops as before. Definitely see the Mo come down.

Next shot H-div, same puff setup.
Feb 14 2012 02:28:15:137PM1120214021Bruce Lipschultzpretty useless because of injections
Feb 14 2012 02:51:17:023PM1120214022Bruce LipschultzH-div worked fine with a steady state shot. The rise in the divertor NII was lower for the H-div than B-div but we have no comparison for NVII in the core. Will repeat B-div (shot 20) to get that data.

The Langmuir probe data shows some differences between 20 and 22. The region of the strike point appears to have stronger Te drops while further out less of a drop. However, for 23 the drop in Te further out in the common flux region is more pronounced - perhaps something to do with more main chamber radiation?

The Mo levels are lower for the B-div shot (20)
Feb 14 2012 02:56:16:427PM1120214024Bruce LipschultzBack to B-div to see if the differences between H-dv abd B-div reproduce. And they do:

Lower Mo levels for B-div
More pronounced Te drop near the strike point, lower further into the SOL for B-div
Less NII signal in the divertor for the H-div puff (measurement at K-port)

Next shot go to higher density as we believe we may not be far enough into high recycling regime because the divertor temperatures are too high now.

Note - Matt has been looking at the PCI and magnetics (and AXUV) for signatures of QC-mode. I believe he has observed the QC mode going away during the N puff.
Feb 14 2012 03:19:53:413PM1120214025Bruce LipschultzIncreased nl04 to 1.2. Too much gas for the RF. No H-mode and disruption at ~ 1 second.

Try again for density of nl04= 1.1


Feb 14 2012 03:45:58:867PM1120214026Bruce LipschultzStill having problems with RF turning on
Feb 14 2012 04:19:27:413PM1120214027Bruce LipschultzIn and out of H-mode. Not making progress. Lower density
Feb 14 2012 04:21:28:753PM1120214028Bruce LipschultzStill not keeping the RF on. Try again. Lower density
Feb 14 2012 04:32:25:743PM1120214029Bruce Lipschultz40% duty factor N injection starting 0.4. The plasma seems ok till it turns off when the Mo and N in core accumulates. It seems to go up in the divertor as well.

Next shot extend the pulse to 1.0s and lower dutyfactor to 20%.
Feb 14 2012 04:46:54:900PM1120214030Bruce Lipschultz20% duty factor N injection starting 0.4. The Mo in the core is high till 0.7 seconds when the divertor Te comes down. When the N2 is turned off at 1.0 the divertor Te starts rising and the Mo stays constant.

Next shot 60%.
Feb 14 2012 06:10:25:523PM1120214031Bruce Lipschultz60% duty factor N injection starting 0.4. Unfotunately, the core H-mode was not stationary. But when it was in H-mode the Mo level was lower than the 20% and 40% cases. The divertor was deteched during the second H-mode that started at ~ 1.0s and then slowly attached as the N pumped away.

Next shot start high (40%) befor the RF and drop to 20% (0.7s).

Also had the strike point higher - more near probe 5.
Feb 14 2012 06:12:04:043PM1120214032Bruce LipschultzStart N2 high (40%) before the RF and drop to 20% (0.7s). Often detached but it is not clear what is driving that.


Physics Operator Comments
Feb 14 2012 08:31:23:600AMIan HutchinsonLoad from 1120209004
Lower Ip to 0.8MA. This should mean it flattens earlier as well.
Raise nl04 to 1.1e20
Rcur to 0.66 from 0.662. Should increase outer gap.

Startup. That shot has a fill puff of 10ms PG4.
Fill puff changed to 30ms, which is what Jerry ended up with a week ago
using the cryopump.

Load

D fill Btop 6.5psi B-main 40psi
Feb 14 2012 08:51:49:603AMIan HutchinsonGas test setup of 50ms B-main puff at -50ms.
Feb 14 2012 09:03:56:443AM1120214001Ian HutchinsonGas puff test. Got 1.5mtorr in vessel. Looks ok.

Next shot cryopump and everything else set up for plasma. Load.
Feb 14 2012 09:17:28:790AM1120214002Ian HutchinsonPlasma to 1.95s.

Set nl04 to 0.8e20
Zero PG5 H-bot puff.
Ramp in zxl 5mm during shot. And zxl 5mm. To control strike point sweep.
Program Ip ramp-down faster.

Feb 14 2012 09:34:09:127AM1120214003Ian HutchinsonPlasma disrupts at .53s. Appears to be a big brick.


Set Bt to 150kA there was a dip.
Feb 14 2012 09:48:29:873AM1120214004Ian HutchinsonPlasma to rampdown.

B-div puff at .63s height 25 duration 0.1s
H-div puff at 1.25s height 25 duration 0.1s

Raise zxl 5mm throughout the shot.
Move rxl out 3mm.
Feb 14 2012 10:05:20:510AM1120214005Ian HutchinsonPlasma to rampdown.

Increase height of divertor puffs to 35.
Feb 14 2012 10:18:19:210AM1120214006Ian HutchinsonPlasma to rampdown.

Add Ip gain step at 0.5s to improve control
Move zcur up from -.015 to -.01
Divertor puffs to 100.
Feb 14 2012 10:38:30:770AM1120214007Ian HutchinsonFizzle. Way too high fill pressure. Ratiomatic starts to rise before programmed
puff. After the shot the N2 level becomes very high during regen. Supposedly
the fizzle detector should have prevented the during-shot N2 puff. We
suspect a leak.

No changes
Feb 14 2012 10:51:15:800AM1120214008Ian HutchinsonPlasma disrupts at .8s. Big injections kill plasma. One is visible on wide2
appearing to be a spray upwards from the vicinity of the inner divertor.

Move rxl in 5mm starting about .4s.
Go to height 60 on divertor puffs.
Feb 14 2012 11:10:20:377AM1120214009Ian HutchinsonPlasma to 1.74s.

Zero h-div puff.
PG1 (BSL) puff at .63s height 73, duration 0.1s
PG6 (B-div) puff 1.25s height 60, duration 0.1s
Enable B-side lower disable H-div puffs.
Feb 14 2012 11:27:36:153AM1120214010Ian HutchinsonPlasma to rampdown. Injection at .9s but we survive and get data.

PG1 (BSL) puff height to 90.
Raise zxl 3mm.
Feb 14 2012 11:37:47:383AM1120214011Ian HutchinsonPlasma to rampdown.

Slow the rampdown rcur movement inward.
Swap the times of the two gas puffs:
B-div .63s, height 60, duration 0.1s
BSL 1.25s, height 90, duration 0.1s
Feb 14 2012 11:53:24:547AM1120214012Ian HutchinsonPlasma ramps right down. Good shot.

Both puffs to 100:
B-div .63s, height 100, duration 0.1s
BSL 1.25s, height 100, duration 0.1s
Feb 14 2012 12:08:11:720PM1120214013Ian HutchinsonPlasma disrupts at 1.5s because of injection. Substantial radiation rise at 1.3s
might be attributable to the N2 puff.

Slow rcur ramp in rampdown a bit more.
Delay B-div. Zero BSL
B-div .83s, height 100, duration 0.1s
BSL 1.25s, height 0, duration 0.1s
Feb 14 2012 12:36:31:537PM1120214014Ian HutchinsonPlasma ramps down.

Copy B-divertor trace to H-divertor trace. So both are on 100 for .1s.
Feb 14 2012 12:48:22:777PM1120214015Ian HutchinsonPlasma to rampdown.

Both puffs to
From .83-1.13s, height 100 followed by 60 till 1.33s.
Feb 14 2012 01:03:50:323PM1120214016Ian HutchinsonPlasma disrupts early in rampdown.


Both puffs to
From .83-.93s, height 100 followed by 60 till 1.33s.
Feb 14 2012 01:17:35:250PM1120214017Ian HutchinsonPlasma disrupts at 1.56s.

Disable both divertor N2 puffs.
Feb 14 2012 01:35:35:953PM1120214018Ian HutchinsonPlasma to rampdown.
Feb 14 2012 01:46:03:487PM1120214019Ian HutchinsonPlasma to rampdown. Appears to have a radiation problem after 1sec.

Remove the back porch from the N2 puffs.
Enable B-div puff.
Feb 14 2012 02:05:55:790PM1120214020Ian HutchinsonPlasma to rampdown.

EF4 to -1330 from -1320A.
Disable B-div puff.
Enable H-div puff.
Feb 14 2012 02:23:30:480PM1120214021Ian HutchinsonPlasma to rampdown. Some injections mess up the first second.
Feb 14 2012 02:41:27:290PM1120214022Ian HutchinsonPlasma to rampdown. Clean plasma.

Disable H-div. Enable B-div.
Feb 14 2012 02:55:42:703PM1120214023Ian HutchinsonPlasma to rampdown. Highly similar to shot 22. So no confirmation of a systematic difference between H-div and B-div.
Feb 14 2012 03:09:34:017PM1120214024Ian HutchinsonPlasma to rampdown.

Add Bside lower Ar puff of 40ms at .3s.
nl04 to 1.2e20
Feb 14 2012 03:35:01:930PM1120214025Ian HutchinsonPlasma. Doesn't get into H-mode.

nl04 to 1.1e20
Feb 14 2012 03:45:16:057PM1120214026Ian HutchinsonPlasma to rampdown.


Ar puff reduced to 30ms.
Feb 14 2012 04:18:25:303PM1120214028Ian HutchinsonPlasma to rampdown.

Reduce nl04 to 0.9
Move rxl out 3mm.
B-div puff 0.4s-0.83s at height 40.
Feb 14 2012 04:31:24:037PM1120214029Ian HutchinsonPlasma.


Disable B-side lower (Ar off).
B-div: 0.4s to 1.0s: height 20.
Feb 14 2012 05:08:18:340PM1120214030Ian HutchinsonPlasma to rampdown.

B-div puff height to 60.
Feb 14 2012 05:09:24:043PM1120214031Ian HutchinsonPlasma to rampdown

B-div puff height to 40 (.4s-.7s) and 20. (.7s -1.s)

Engineering Operator Comments
ShotTimeTypeStatusComment
108:52:32:223AMTestOkGas Test
209:01:50:470AMPlasmaOk
309:16:45:817AMPlasmaOk
409:29:31:697AMPlasmaOk
509:48:41:017AMPlasmaOk
610:02:47:900AMPlasmaOk
710:18:28:540AMPlasmaOk
810:35:55:777AMPlasmaOk
910:49:58:963AMPlasmaOk
1011:10:22:580AMPlasmaOk
1111:25:22:173AMPlasmaOk
1211:40:31:233AMPlasmaOk
1311:55:32:020AMPlasmaOk
1412:11:39:220PMPlasmaOk
1512:32:39:010PMPlasmaOk
1612:47:16:070PMPlasmaOk
1701:02:16:863PMPlasmaOk
1801:15:21:750PMPlasmaOk
1901:30:04:827PMPlasmaOk
2001:45:58:337PMPlasmaOk
2102:02:19:450PMPlasmaOk
2202:19:31:557PMPlasmaOk
2302:36:29:517PMPlasmaOk
2402:52:35:087PMPlasmaOk
2503:11:56:677PMPlasmaOk
2603:28:46:560PMPlasmaOk
2703:45:02:460PMPlasmaOk
2804:00:51:020PMPlasmaOk
2904:18:10:497PMPlasmaOk
3004:33:22:093PMPlasmaOk
3104:48:34:283PMPlasmaOk
3205:03:55:643PMPlasmaOk

System Availability
Feb 14 2012 08:52:21:457AM
SystemAvailableCommentAvailability
Changed
OwnerDescriptionWho Can
Change
Active MHDnosecured - tagged outJun 02 2008 11:03AM (sears)Joe SnipesActive MHD Antennagolfit
BESyesBES system is onlineNov 22 2011 02:21PM (bespam)Bill RowanBeam Emission Spectroscopybespam,liao,rowan
BolometersyesMidplane and LEDGE-AX diodes functioning properly. Midplane bolometers working and calibrated. LEDGE/DIV bolometers working, but toaster calibration not yet complete.Jan 23 2012 12:02PM (mlreinke)Matt ReinkeBolometershutch,mlreinke
BoronizationnoBottle Removed. System has been tested and will be ready once bottle is installedJan 09 2012 06:32AM (dekow)Jim IrbyBoronizationdekow,irby
CECEno Jan 06 2012 03:48PM Anne WhiteCorrelation ECEwhitea
CNPAyesMultiple channel CNPA available, no safety risk for in-vessel accessApr 14 2011 12:01PM (parker)Ron ParkerCompact Neutral Analyzerparker
Cryopump - Upper DivertoryesOperational. He level meter not working on 500L dewar. Frank will take manual readings.Jan 11 2012 11:46AM (labombard)Brian LaBombardUpper Divertor Cryopumpdekow,irby,labombard
CXRSyescore-CXRS system is onlineNov 22 2011 02:21PM (bespam)Bill RowanCharge Exchange Spectroscopybespam,blip,liao,rachmcd,rowan
CXRS edgeyesMichael CHurchill has primary responsibility at the momentApr 19 2011 11:44AM (blip)Bruce LipshultzMeasurement of CXR light in the pedestal region at both the high- and low-field sidesblip,rmchurch
D Alphayes\ha2_bright is available; \SPECTROSCOPY::TOP.VUV.VIS_SIGNALS:MCP_VIS_SIG1 is not availableJul 01 2009 09:45AM (terry)Jim TerryBalmer Alpha Monitorirby,terry,wolfe
Dalsanosystem is is installed and aligned, but not functional (appears to be a broken cable)Dec 05 2011 02:41PM (marmar)Earl MarmarVisible Bremsstrahlung Imagingmarmar
Disruption Mitigationnogas jet valve disabled on 2011/04/13Apr 13 2011 02:04PM (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
DMBolo AXUV diodesyesDiodes are taking usable data. Not all post-processing code is working yet.Feb 01 2012 01:24PM (golynyk)Geoff OlynykSet of six AXUV diodes in a toroidal array of midplane wall boxes.golynyk,granetz,mlreinke,whyte
DNByes Dec 01 2011 11:46AM (granetz)Robert GranetzDiagnostic Neutral Beamdterry,granetz,mochung
ECDCyesOperational as of 11/19/11Nov 22 2011 03:01PM (irby)Jim Irby2.45 GHz, 3 kW, discharge cleaning systemdekow,irby,pfeiffer
FRC-ECEnoPower off to RF and IF sections- Power on to DAApr 11 2011 02:54PM (phillips)Perry PhillipsHeterodyne ECE-32 channelsbespam,liao,phillips,rowan,whitea
FTCIno Jan 06 2012 04:36PM Jim IrbyFast two-color interferometerirby
G-Side Ratiomaticyes Dec 02 2011 12:24PM (toland)Brian LaBombardG-side ratiomatic ionization gaugelabombard,toland
Glow DischargenoPower supply unplugged and redtagged, HV cables removedApr 14 2011 08:03AM (dekow)Jim Irby1 kV, 5 A, glow discharge systemdekow,dterry,irby
GPCyesUsing new preamps.Nov 30 2011 07:51AM (hubbard)Amanda HubbardECE Polychromaterhubbard
GPC2yesDewar cold. Nov 21 2011 09:55AM (hubbard)Amanda HubbardECE Polychromaterhubbard
GPIyesThe 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 TerryGas Puff Imagingterry,zweben
H/Dyessystem is functional and taking dataDec 05 2011 02:42PM (marmar)Earl MarmarH/D Ratiomarmar
HEATyes Jan 09 2012 06:32AM (dekow)Gary Dekow - Machine Heaters -burke,dekow
Hirex JryesHirex-Jr has been installedJun 28 2010 03:36PM (rice)John RiceHigh Resolution X-Rayince,rice
Hirex SryesInstalled and aligned. Will be available for Ti/Vr profiles after focusing tests and locked modes are taken.Dec 06 2011 08:21AM (ypodpaly)John RiceHigh Resolution X-Raycgao,ldelgado,rice,ypodpaly
HXRyes32 Channels operational,, no safety risk for in-vessel accessApr 14 2011 12:05PM (parker)Ron ParkerHard X-Ray Arrayfaust,parker,schmidt
ICRF D-AntennanosecuredApr 14 2011 08:55AM (wukitch)Steve WukitchD-port antennawukitch,ylin
ICRF E-AntennanosecuredApr 14 2011 08:55AM (wukitch)Steve WukitchE-port antennawukitch,ylin
ICRF J-AntennanosecuredApr 14 2011 08:56AM (wukitch)Steve WukitchJ-port antennawukitch,ylin
Impurity SpectroscopyyesBeing upgraded with better optics and new spectrographs. Dan Miller has primary responsibility.Apr 19 2011 11:46AM (blip)Bruce LipshultzMeasurement of recycling light and impurity source rates at multiple surfaces around the tokamakblip,miller
Laser Blow-OffyesOperational and testedJan 06 2012 03:50PM (g)Martin GreenwaldImpurity Injection Systemg,nthoward
Lower HybridnoLH HV Breaker Opened and Tagged, TPS Upgrade UnderwayNov 10 2011 03:51PM (dterry)Ron ParkerLower Hybriddterry,parker,wallaceg
Lower Hybrid ReflectometernooffApr 15 2011 08:24AM (dominguez)Arturo DominguezLower Hybrid Reflectometerdominguez,marmar,parker,sgbaek
LoWEUSyesLoWEUS viewing the 10-30 nm region, spectral brightness vs. lambda and time are being stored in tree.Jan 23 2012 12:03PM (mlreinke)Matthew L. Reinke Long Wavelength Extreme Ultraviolet Spectrometermarkchil,mlreinke
LPInoBeam line removedMay 30 2008 02:09PM (bose)Earl MarmarLithium Pellet Injectorbose,marmar
Ly-alphayesMidplane Lyman-a and LEDGE-LY working normally. New B-PORT Lyman (BPLY) still being debugged.Jan 23 2012 12:04PM (mlreinke)Matt ReinkeLyman alpha camerasfaustian,labombard,mlreinke
Magneticsyes Dec 01 2011 11:51AM (g)Robert GranetzBp coils and flux loops for equilibrium controlgranetz,wolfe
McPhersonno**vacuum system problem*** McPherson viewing the 10-14 nm region for molybdenum monitoring. It's days are numbered as LoWEUS has demonstrated superiority.Jan 31 2012 08:15AM (mlreinke)Jim TerryVUV Spectrometermarkchil,mlreinke,terry
MichelsonyesFront end at 4.5e-8 T. Reduced speed for initial operation.Nov 30 2011 07:51AM (hubbard)Amanda HubbardECE Te Profileshubbard,schmidt
MKSyes Dec 02 2011 12:27PM (toland)Brian LaBombardBaratron pressure gaugeslabombard,toland
MLPnoSystem 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 LaBombardMirror Langmuir Probe Electronics Systemlabombard
MSEno1/3/2011: push-pull mechanism broken. MSE inoperativeJan 03 2012 11:47AM (sscott)Steve ScottMotional Stark Effectjinseok,sscott
NeutronsyesHigh voltage is on. We're ready for plasma.Nov 21 2011 12:58PM (fiore)Catherine FioreNeutron Detectorsfiore
Neuts and HardsyesAll detectors Powered On --- Waiting for neutrons for calibrationNov 22 2011 01:05PM (irby)Jim IrbyX-Ray/Neutron Detectors at K-Horirby
NINJAyesC-bottom and new F-bottom system ready.Dec 02 2011 12:28PM (toland)Brian LaBombardNINJA gas pufflabombard,terry,toland
PCIyesOperational.Nov 30 2011 12:45PM (ntsujii)Miklos PorkolabPhase Contrast Imagingemd,ennever,ntsujii,porkolab
Penning GaugesyesOperational. High voltage comes on during INIT and off at RECOOL.Dec 09 2011 09:48AM (labombard)Brian LaBombardPenning Ionization Gaugeslabombard
Plasma TVyesWIDE1, WIDE2 (chan 33), DANT, JANT and DIV are operational.Jul 01 2009 09:46AM (terry)Jim TerryVideo of plasma via several camerasdekow,irby,terry,wolfe
Polarimeteryes3 chords operational but with high noise levelJan 06 2012 04:22PM (irby)Jim IrbyC-Mod Polarimeterirby
Power - Alternator Air Switchyes Jan 09 2012 06:33AM (dekow)Gary Dekowfeeds all the other suppliescochran,dekow,dterry,irby
Power - PEIyes Jan 09 2012 06:33AM (dekow)Gary DekowPEI Systemcochran,dekow,dterry,irby
Power - TMXyes Jan 09 2012 06:33AM (dekow)Gary DekowEf2s,. EFCs and A-Coilsbyford,cochran,dekow,dterry,irby
Power Systemsyes Jan 09 2012 06:33AM (dekow)Jim IrbyC-Mod Magnet Suppliesbyford,cochran,dekow,dterry,irby
Probe Array - ISDyesOperational, except for probe #1 (open circuit) and probe #16 (not installed).Dec 09 2011 09:50AM (labombard)Brian LabombardInner Lower Divertor Probe Arraylabombard
Probe Array - LHyesOperational, except for bottom-D probe (open circuit).Dec 09 2011 09:52AM (labombard)Brian LaBombardLower Hybrid Probe Arraylabombard
Probe Array - OSDyesF-divertor ok. J-divertor ok, except for JDIV_06 which is shorted out.Dec 09 2011 09:54AM (labombard)Brian LaBombardOuter Lower Divertor Probe Array (F and J)labombard
Probe Array - UDIVyesOperational except for probes #4, 5 and 13 (open)Dec 09 2011 09:56AM (labombard)Brian LaBombardUpper Divertor Probe Arraylabombard
ReflectometeryesAs of 1120105xxx, all channels are connectedJan 05 2012 09:14AM (dominguez)Earl MarmarReflectometerdominguez,marmar
Scanning Probe - ASPyesIon Sensitive Probe head installed. Testing in piggy-back mode.Dec 20 2011 12:33PM (labombard)Brian LaBombardA-Port Scanning Probelabombard
Scanning Probe - FSPyesOperational.Dec 09 2011 09:57AM (labombard)Brian LaBombardF-Port Scanning Probelabombard
Scanning Probe - WASPyesA-port WASP is operational. K-port WASP is dead (all probes melted together).Dec 09 2011 09:58AM (labombard)Brian LaBombardInner Wall Scanning Probelabombard,nsmick
Shoelace AntennayesFixed frequency operation available (100kHz) at moderate power (< 0.5kW). Otherwise in receiver mode.Jan 11 2012 11:50AM (labombard)Brian LaBombardHigh-k active MHD antenna, for QCM, WCM studiesgolfit,labombard
SOL reflectometeryesc-port waveguides operational, h-port waveguides are not.Nov 29 2011 12:04PM (cornwall)Cornwall LauSOL reflectometercornwall,wukitch,ylin
SparkeryesNew Type II sparker replaced Type I on 11/17/2011Nov 23 2011 08:53AM (irby)Jim IrbyField Emission Preionization for C-Moddekow,irby,parkin
Surface Science StationnoSSS is up to air, no safety issuesApr 14 2011 12:06PM (ochoukov)Bruce LipschultzRadially scanning probe located on K-portblip,ochoukov
TCIyesTCI Operational. Density feedback operational.Nov 10 2011 11:47AM (irby)Jim IrbyTwo-Color Interferometerirby,murray
TS - CoreyesOperating with two 50Hz lasers, precise density calibration still required.Feb 03 2012 04:04AM (jwhughes)Jerry HughesCore Thomson scatteringjrwalk,jwhughes,yma
TS - EdgeyesSystem taking data. Requires calibration.Feb 03 2012 04:05AM (jwhughes)Jerry HughesMillimeter resolution edge Thomson scatteringjrwalk,jwhughes,yma
Vispecno350 and 670 nm, 4 spatial channelsNov 28 2007 09:58AM (agraf)Alex GrafVisible Spectrometeragraf
XEUSyesXEUS viewing the 1-6 nm region, spectral brightness vs. lambda and time are being stored in tree.Jan 23 2012 12:13PM (mlreinke)Matt ReinkeX-ray Extended Ultraviolet Spectrometermarkchil,mlreinke
XTOMOyesARRAY1->4 working normally, ARRAY5 (new core view) working but spatial calibration issues not yet resolvedJan 23 2012 12:13PM (mlreinke)Robert GranetzX-Ray Tomographyfaustian,granetz,mlreinke