Alcator C-Mod Run 950119 Information

Miniproposals

Miniproposal: 044

Date Filed: 3/31/1994

Title: Impurity transport and impurity sputtering in the divertor.

First Author: Gary McCracken

Session Leader: Gary McCracken (shots 1-32)

Operators
Session leader(s):	Gary McCracken
Physics operator(s):	John Goetz
Engineering operator(s):	Joe Daigle

Engineering Operator Run Comment
impurity transport, divertor gauge cal.

Session Leader Plans

Physics Operators Plans

Session Leader Summaries

Entered: Jul 7 2004 03:49:12:007PM

Author: To Be Determined

__________________________________________________________________________________________________
+++ Run Summary 951119B: MP#063: "High Pressure Calibration of Divertor Gauges" +++
Artur, 1/19/95
__________________________________________________________________________________________________
The objective of the mini-run was to calibrate divertor gauges in the high pressure limit
7-70 mTorr, using NINJA gas puffs and magnets to reproduce plasma fields at gauge location.
The short calibration run ionvolved no plasma, no hybrid, only TF and some PF coils.
It required very high pressure D2 puffs (<70mTorr) into the machine.

Initially some time was spent on operating PFs under PLC and obtaining the required
fields (shots 25-28). After that calibration went very smoothly (shots 29-32),
with constant fields and variable amount of gas in the torus.

The objective of the mini-run has been achieved, mostly thanks to dedicated staff
(Wanda, Andy, Jeff, Joe, Bob) and help (+patience) of fellow researchers (Steve, Steve, Dave).
Thanks to everybody, Artur.

Detailed account of SHOT SEQUENCE:
__________________________________________________________________________________________________
Shot: Test: C-Mod: Plenum: Capillarys Start/Length [sec] EF2L[A] Bz[T]
pressure desired used of Pulse EF3[A] Br[T]
__________________________________________________________________________________________________
#25 #212 4mTr 1177 B16-001 -1 .2 -4000 .13
ninja 7mTr 1200Tr B20-001 -.05 .1 5500 -.45
isolated 9mTr B16-001 .5 .1 after .5sec

#26 #212 4mTr 1169 B16-001 -1 .2 -1300 .37
ninja 7mTr 1200Tr B20-001 -.05 .1 5500 -.45
isolated 9mTr B16-001 .5 .1 after .5sec

#27 #212 4mTr 1160 B16-001 -1 .2 -1650 .37
ninja 7mTr 1200Tr B20-001 -.05 .1 6500 -.45
isolated 9mTr B16-001 .5 .1 time o.k.

#28 #214 10mTr 1153 B20-001 B16-001 -1 .3 -220 .60
ninja 13mTr 1072Tr B20-001 B16-001 -.05 .1 6500 -.17
isolated 19mTr B20-001 B16-001 .5 .1

#29 #221 37mTr 1103 B22-022 B20-001 B16-001 -1.7 1.2 -220 .60
ninja 43mTr 1107Tr B22-022 B20-001 B16-001 -.05 .1 6500 -.17
isolated 50mTr B22-022 B20-001 B16-001 .5 .1

#30 #222 20mTr 1049 B22-022 B20-001 B16-001 -1.7 .6 -220 .60
ninja 27mTr 1065Tr B22-022 B20-001 B16-001 -.05 .1 6500 -.17
isolated 34mTr B22-022 B20-001 B16-001 .5 .1

#31 #219 53mTr 1177 B22-022 B20-001 B16-001 B33-001 -1.7 1.2 -220 .60
ninja 62mTr 1207Tr B22-022 B20-001 B16-001 B33-001 -.05 .1 6500 -.17
isolated 70mTr B22-022 B20-001 B16-001 B33-001 .5 .1

#32 #212 4mTr 1183 B16-001 -1 .2 -220 .60
ninja 7mTr 1200Tr B20-001 -.05 .1 6500 -.17
isolated 9mTr B16-001 .5 .1
__________________________________________________________________________________________________
SECRET SETTINGS: EF2L 500V, 800A EF3 3000V, 8kA (start -.7sec, stop 1.2sec)

Entered: Jul 7 2004 03:49:12:023PM

Author: To Be Determined

Session Leader Report for Run 950111
EO J Daigle
PO J Goetz
SL G McCracken

Purpose: To compare the screening of injected He Ne and Ar, varying the
position of injection of the impurity gas using the NINJA gas injection system.
MP 044 -- Impurity transport and impurity sputtering in the divertor

A good diverted discharge was set up almost immediately, with the outer
strike point fairly stable on probe 2 throughout the diverted phase. Diversion
started at 0.3 s, the inner gap was about 2 cm, the outer one on average about
1.5 cm, but decreasing during the shot. The density was kept constant at
nel04=1e20 m^-3 throughout the run.
We started with neon injection using the NINJA system to inject through
the various capillaries. We did a detailed poloidal scan from the inner
midplane round through the private flux region to the outer wall,shots 4 to 11.
The plenum pressure was typically 50 torr for neon and the trigger time for the
BN valves was -0.1 s. The spectroscopic signals showed the neon entering about
0.4 s, the signals rising throughout the pulse due to the approximately
constant gas flow. Reasonable signals were obtained on the oma and the
McPherson, though they were rather near the noise level. The oma measurements
were made looking through A-port periscope at the outer divertor target.
Measurements were made with the reticon array both with neon I (6402 A) and
helium II filters, but the background was large and the data are still to be
analysed. We did not want to increase the impurity level in case it disturbed
the plasma conditions. There was no sign of increase of the radiation due to
the impurities and the power into the SOL remained about 800 kW throughout the
run. Comparing the target probes and the fast scanning probe there seemed to
slight detachment, just at the separatrix
On shots 12 to 15 we tried to observe the effect of changing the
toroidal position of injection. However with the same plenum pressure the
amount of gas going in was much lower, probably due to the longer capillaries.
This needs to be repeated. On shots 16 to 18 we repeated some poloidal
positions with slightly higher neon plenum pressure.
We then changed to helium and compared the inner wall, the private flux
zone and the outer SOL. On the final shot we tried argon at the outer SOL.
The run ended at 3.30 pm to allow time for calibration of Arturs gauges, MP063
Preliminary analysis shows that the Ne VIII signal (from the McPherson)
changes less than a factor of 2 in the poloidal scan for the same plenum
pressure conditions. The effect of the different capillary lengths has not yet
been assessed as this calibration has yet to be done. The Ne I signals vary
by about a factor 3 with the largest one being when the puffing is in the
private flux zone. This is not surprising as we are looking at the outer
target.

Future studies should examine the effect of increasing the impurity
injection rate, particularly for the toroidal scan, even if it means
modifying the plasma.

Shot Summary
001 fizzle
002 Good shot, constant density, nel04=1e20 m^-2, no neon
003 Good shot, neon injection through B side upper valve to compare with run
950111. Plenum pressure 3 psi, pulse 20 ms at 0.5 s.
004 Good shot, Valve B16-001, inner wall. Plenum pressure 34 torr, trigger
0.0 s
005 Good shot, Valve B16-001, inner wall. Plenum pressure 50 torr, trigger
0.0 s
006 Good shot, Valve B22-022, inner cone. Plenum pressure 50 torr, trigger
-0.2 s
007 Good shot, Valve B26-019, PFZ. Plenum pressure 50 torr, trigger -0.1 s
008 Good shot ,Valve B31-086, outer SOL. Plenum pressure 50 torr, trigger
-0.1 s
009 Good shot ,Valve B33-001, outer wall. Plenum pressure 50 torr, trigger
-0.1 s
010 Good shot , no neon, background shot.
011 Good shot, Valve B16-001, inner wall. Plenum pressure 50 torr, trigger
-0.1 s
012 Good shot, Valve B30-012, slot. Plenum pressure 50 torr, trigger -0.1
s
013 Good shot, Valve F30-012, slot. Plenum pressure 50 torr, trigger -0.1
s
014 Good shot, Valve K30-012, slot. Plenum pressure 50 torr, trigger -0.1
s
015 Good shot, Valve D.F.H.K.30-012, slot. Plenum pressure 50 torr,
trigger -0.1 s
016 Good shot, Valve B16-001, inner wall. Plenum pressure 72 torr, trigger
-0.2 s
017 Good shot, Valve B26-019, PFZ. Plenum pressure 72 torr, trigger -0.2 s
018 Good shot ,Valve B31-086, outer SOL. Plenum pressure 72 torr, trigger
-0.2 s

Change to helium
019 Good shot ,Valve B31-086, outer SOL. Plenum pressure 82 torr, trigger
0.0 s
020 Good shot , no gas, background shot
021 Good shot, Valve B26-019, PFZ. Plenum pressure 125 torr, trigger 0.0
s
022 Good shot, Valve B16-001, inner wall. Plenum pressure 125 torr,
trigger 0.0 s
023 Good shot ,Valve B31-086, outer SOL. Plenum pressure 125 torr, trigger
0.0 s

Change to argon
023 Good shot ,Valve B31-086, outer SOL. Plenum pressure 54 torr, trigger
-0.1 s

Physics Operator Summaries

Entered: Jul 7 2004 04:36:52:897PM

Author: To Be Determined

From: ZENITH::MARMAR
Date: 19-JAN-1995 23:00:09
Description: Physics Operator's Run Summary, 950119

950119; MP 44, Impurity transport and impurity sputtering in the divertor
(day 2)

P.O. Marmar
E.O. Daigle, Paranay
S.L. McCracken

From the operator's point of view, a successful run. After the first fizzle,
every shot went. We stopped making plasmas at 3:30 so Artur could calibrate
his pressure gauges with selected fields; see his mini-run summary for
details.

The MP called for constant shots with various puffing of neon, helium and
argon using NINJA. An acceptable plasma was established on shot 4, and after
that the only changes made by the P.O. were aimed at: improving the ramp-down;
one tweak of the Ip Prop gain during the current rise; minor G-head changes to
reduce the early moly influx. The ramp-down was copied into a segment 3 called
Diverted Plasma Rampdown, starting with shot 17. It appeared to be a fairly
robust rampdown, but the last shot of the day disrupted early, so some tuning
is probably still required.

The pre-fill pressure was 1.5e-5 for the entire run.

In piggy-back mode, lithium pellets were injected late in a few shots, as part
of the cigar detector debugging effort.

ECDC in D2 from 6:00 am to 8:15 am.
load 950111030 into segment 2; 95011833 into segment 1
re-call algorithms in segment 2 to reflect flux loop change from last week.

Shot summary:

1) 1.5e-5 fizzle, bounced, Ip rises too fast; W-heads suggest raising fill
2) 1.5e-5 lower V Oh1 by 30 volt between 5 and 15 msec; Plasma
3) 1.5e-5 raise strikepsi by .5 mm at 1 s, puff Ne at 0.5 s; Plasma
4) 1.5e-5 RXL out .5 cm; fiddle with late gain on RCUR; Plasma
5) 1.5e-5 Neon raised; plasma
6) Raise early gas puff; fiddle with late ZXL, RXL, RCUR; increase Ip rampdown
rate slightly; Plasma; disrupted earlier, but at same Ip
7) Slow Ip rampdown; Neon .1 s later; Plasma; Disrupt later but at higher Ip
8) back to original Ip ramp; twiddle RCUR and RXL after 1 sec; raise early
gas; plasma
9) fiddle with rampdown RCUR, CLEARIN; increase NE_04 ramp up and down rates
slightly; better rampdown; Li pellet at 1.0 s plasma
10) Ar; no neon; RCUR tweak late; Nel_4 tweak early; sharkfin late; plasma
11) CLEARIN late further in; early gas up; Li pellet at 1.0 s; disrupt at 1.1;
plasma; this one showed serious peaking after the pellet
12) no changes; no Li pellet; No neon (NINJA problem); Plasma
13) Plasma; A bit disruptive on the way down
14) RCUR in late; plasma
15) no changes; plasma
16) RCUR in a little earlier; disrupted earlier; plasma
17) Back to shot 15 for RCUR; add segment 3 for rampdown at 1.35s; Disrupt at
1.16 s; funny soft x-ray bump around .5 s. plasma
18) no changes; disrupt on rampdown at .6 MA; plasma
19) RCUR tweak late (segments 2 and 3); good rampdown; plasma
20) move seg 3 to start at 1.0 s; further RCUR tweak at 1.12 s; plasma
21) Turn on Ip prop gain earlier; EF2's kissing their limits at crossover;
plasma
22) No changes; plasma
23) No changes; no EF2 kiss; plasma
24) removing He, going to Ar NINJA; disrupt on rampdown at .4 MA; plasma

25 and beyond: Power supplies running under PLC control. Only hybrid change
was to disable the fizzle detector by setting the start and stop times both to
be after 1.2 seconds.
End of plasma portion of run

Summary: 1 fizzle, 23 plasmas

Session Leader Comments

Jan 19 1995 08:39:46:920AM Gary McCracken EO J Daigle
PO E Marmar
SL G McCracken

Miniproposal #044 "Impurity transport and impurity sputtering in the divertor"
Purpose: To compare the screening of injected He Ne and Ar, varying the
position of injection of the impurity gas using both NINJA and the B-side
valves.
This run is the second day of MP 044, the previous run having been
940623. As before we will try to use the impurity as a tracer, ie it will be
the aim not to disturb the background plasma (as was the aim for MP043, run950111).

Jan 19 1995 04:23:16:890PM Gary McCracken Summary:
We did a fairly thorough scan of the poloidal capillaries from the mid-plane
inner wall around to the lower outer wall using neon injection. The initial
impression is that the screening does not vary by more than a factor of 2 from
the different positions. The toroidal scan was less satifactory as the time
for the gas to get in was longer. Very low signals were observed. While this
could be overcome by increasing the plenum pressure or advancing the trigger we
decided that we didn't have time to play around.
We compared helium injection at the inner midplane, the private flux
zone and the outer SOL, just above the nose. Again there was not a great
variation. There was just one shot with argon, 950119024 , this one from the
outer SOL.
For all the shots the amount of impurity was low so that there was no
significant change in plasma paramters. Changes in Prad, main and Zeff were
barely detectable and Psol was about 800 kW

Jan 19 1995 09:11:30:710AM 950119001 Gary McCracken Try to repeat shot 950111030, constant density nel04=1e20 m^-3, Ip=800 kA,
with outer strike point on the vertical target. Inner and outer gaps to
be > 1.5 cm.
Fizzle

Jan 19 1995 09:26:24:390AM 950119002 Gary McCracken Good shot. Ip and nel04 as requested with good flat top.
Inject neon on the next shot through B side upper

Jan 19 1995 09:43:41:790AM 950119003 Gary McCracken Good shot. Neon injected at 0.5 s and good signal seen on the McPherson
with signal level similar to that on run 950111030.
Change to NINJA system injection of neon on the next shot

Jan 19 1995 10:04:47:660AM 950119004 Gary McCracken Good shot . NINJA triggered at 0.0 s through B16-001 valve (inner wall).
Plenum pressure 34 torr. Signals on oma and McPherson very low.
Increase plenum pressure on next shot.

Jan 19 1995 10:20:38:720AM 950119005 Gary McCracken Good shot . NINJA triggered at 0.0 s through B16-001 valve (inner wall).
Plenum pressure increased to 50 torr. Good signal on the McPherson,
neon coming in at at 0.7 s. Will advance trigger on next shot

Jan 19 1995 10:35:23:660AM 950119006 Gary McCracken Good shot . NINJA triggered at -0.2 s through B22-022 valve (inner target cone).
Plenum pressure still at 50 torr. Good signal on the McPherson,
neon coming in at at 0.4 s. level higher

Jan 19 1995 11:05:06:120AM 950119007 Gary McCracken Good shot . NINJA triggered at -0.1 s through B31-086 valve (outer SOL)
Plenum pressure still at 50 torr. Good signal on the McPherson and on the oma
Previous shots also had reasonable oma signals,
neon coming in at at about 0.5 s s.

Jan 19 1995 11:11:09:520AM 950119008 Gary McCracken Good shot . NINJA triggered at -0.1 s through B31-086 valve (outer SOL)
Plenum pressure still at 50 torr. Lower signal on the McPherson and on the oma
neon coming in at at about 0.5 s s.

Jan 19 1995 11:29:44:630AM 950119009 Gary McCracken Good shot . NINJA triggered at -0.1 s through B33-001 valve (outer lower wall)
Plenum pressure still at 50 torr.
Similar signals on the oma to the last shot
neon still coming in at at about 0.5 s s.
Interesting comparison between oma and McPherson in all the shots. The McPherson
signal goes up faster than linearly throughout the flat top phase, effectively
integrating the neon input, while the oma signal increases to a steady
level and then slowly falls from about 0.8 s on.

Jan 19 1995 11:43:25:890AM 950119010 Gary McCracken Good shot . NINJA turned off for background on spectrometers
Argon pulse at 0.3 s for 20 ms to get Ti profile
oma signal is not significantly lower than the last shot!
However McPherson is well down

Jan 19 1995 11:57:17:370AM 950119011 Gary McCracken Good shot . NINJA on and back to valve B16-001 ( inner wall) to get a shot under the
same conditions as from shot #007 on. Pressure 50 torr, trigger -0.1 s
oma Ne I increase to 30 units from about 10 units background
Lithium pellet injected at 1.0 s. Disruption very shortly after

Jan 19 1995 12:14:59:320PM 950119012 Gary McCracken Good shot . NINJA on valve B30-012 ( slot) . Pressure 50 torr, trigger -0.1 s
No neon injected, NINJA problem. Lower background on both McPherson and oma
oma level about 5 units, McPherson 1 unit

Jan 19 1995 12:33:26:360PM 950119013 Gary McCracken Good shot . NINJA on valve F30-012 ( slot) . Pressure 50 torr, trigger -0.1 s
Abandon the previous valve and try F port position. NINJA appeared to work, but
no measureable signal on the oma

Jan 19 1995 12:47:22:890PM 950119014 Gary McCracken Good shot . NINJA on valve K30-012 ( slot) . Pressure 50 torr, trigger -0.1 s
K port position. Very little neon going in although NINJA records gas going in
Probably because the the capillary tubes are longer and it is taking longer
for the gas to get there

Jan 19 1995 12:54:54:390PM 950119015 Gary McCracken Good shot . NINJA on valve D30-012, F30-012 H30-012 K30-012 all open
( slot) . Pressure 50 torr, trigger -0.1 s. Still very little gas in
Abandon the toroidal scan and go back to the poloidal scan

Jan 19 1995 01:16:15:240PM 950119016 Gary McCracken Start a epeat poloidal scan with more gas going in. Increase NINJA pressure to
72 torr. Trigger -0.2 s. Valve B16-001 (inner wall) About 50% increase
in the McPherson signal compared with the previous shot at this valve.

Jan 19 1995 01:30:56:710PM 950119017 Gary McCracken Good shot.NINJA pressure 72 torr. Trigger -0.2 s. Valve B26-019
(private flux zone). oma not working for this or the last shot
McPherson signal is about 20 units less than half shot #007 with the
same valve. Don't know why.

Jan 19 1995 01:45:00:600PM 950119018 Gary McCracken Good shot.NINJA pressure 72 torr. Trigger -0.2 s. Valve B31-086 (outer SOL)
McPherson signal is about 15 units

Jan 19 1995 02:00:17:140PM 950119019 Gary McCracken Good shot. CHANGE TO HELIUM injection
NINJA pressure 72 torr. Trigger 0.0s. Still Valve B31-086 (outer SOL)
McPherson signal is about 3 times background

Jan 19 1995 02:16:59:170PM 950119020 Gary McCracken Good shot.
Background shot, no helium going in. Background on McPherson 0.5 - 1.0 units

Jan 19 1995 02:34:45:270PM 950119021 Gary McCracken Raised helium plenum pressure to 125 torr, trigger=0.0 s
NINJA valve B26-019 (private flux zone)
oma fixed and set on He II.
Good shot.

Jan 19 1995 02:53:22:010PM 950119022 Gary McCracken Helium plenum pressure 125 torr, trigger=0.0 s
NINJA valve B16-001 (inner wall). No spectroscopy yet
Good shot.

Jan 19 1995 03:10:03:320PM 950119023 Gary McCracken Helium plenum pressure 125 torr, trigger=0.0 s
NINJA valve B31-086 (outer SOL).
Good shot.

Physics Operator Comments

Jan 19 1995 08:39:24:980AM Earl Marmar MP 044: Impurity transport and impurity sputtering in the divertor (day 2)

S.L. McCracken
P.O. Marmar
E.O. Daigle

Jan 19 1995 09:10:17:920AM 950119001 Earl Marmar Fizzle

Jan 19 1995 09:21:13:780AM 950119002 Earl Marmar Lower V OH1 30 v between 5 and 15 ms; 1.5e-5; plasma

Jan 19 1995 09:43:20:560AM 950119003 Earl Marmar Raise Strkpsi .5 mm; Ne through B_side_lower at .5 s; Plasma

Jan 19 1995 10:01:30:160AM 950119004 Earl Marmar Neon through NINJA; Plasma

Jan 19 1995 10:14:11:840AM 950119005 Earl Marmar More neon; Fiddling with ramp down to attempt to avoid disruption; Plasma

Jan 19 1995 10:34:35:440AM 950119006 Earl Marmar Speed up Ip rampdown; Disrupt earlier, but at same Ip.

Jan 19 1995 11:15:56:130AM 950119008 Earl Marmar Back to original Ip ramp; fiddle with rampdown; lasted a little longer; plasma

Jan 19 1995 11:28:41:380AM 950119009 Earl Marmar RCUR and CLEARIN tweaks late; better rampdown; Li pellet at 1.0 s; plasma

Engineering Operator Comments

Shot Time Type Status Comment

1 09:01:08:680AM Plasma Ok No Faults.

2 09:12:27:480AM Plasma Ok No Faults

3 09:29:23:060AM Plasma Ok No Faults.

4 09:47:34:820AM Plasma Ok No Faults.

5 10:05:59:410AM Plasma Ok no faults

6 10:21:06:500AM Plasma Ok no faults

7 10:36:16:200AM Plasma Ok no faults

8 10:54:07:920AM Plasma Ok no faults

9 11:15:21:500AM Plasma Ok no faults

10 11:30:57:090AM Plasma Ok no faults

11 11:45:19:070AM Plasma Ok no faults

12 12:00:13:870PM Plasma Ok no faults

13 12:16:27:130PM Plasma Ok no faults

14 12:31:28:670PM Plasma Ok no faults

15 12:43:49:270PM Plasma Ok no faults

16 12:58:14:170PM Plasma Ok no faults

17 01:16:46:300PM Plasma Ok no faults

18 01:31:30:640PM Plasma Ok no faults

19 01:47:11:610PM Plasma Ok no faults

20 02:03:12:740PM Plasma Ok no faults

21 02:22:06:830PM Plasma Ok No Faults.

22 02:40:27:760PM Plasma Ok No Faults.

23 02:54:45:300PM Plasma Ok No Faults

24 03:14:43:050PM Plasma Ok No Faults.

25 03:39:17:010PM Test Ok ef2 current set too high

26 03:51:57:650PM Test Ok good

27 04:03:41:950PM Test Ok good shot

28 04:19:09:940PM Test Ok good

29 04:31:14:840PM Test Ok good

30 04:43:43:700PM Test Ok good

31 04:55:54:120PM Test Ok good

32 05:09:01:700PM Test Ok good

Session Leader Comments
Jan 19 1995 08:39:46:920AM		Gary McCracken	EO J Daigle PO E Marmar SL G McCracken Miniproposal #044 "Impurity transport and impurity sputtering in the divertor" Purpose: To compare the screening of injected He Ne and Ar, varying the position of injection of the impurity gas using both NINJA and the B-side valves. This run is the second day of MP 044, the previous run having been 940623. As before we will try to use the impurity as a tracer, ie it will be the aim not to disturb the background plasma (as was the aim for MP043, run950111).
Jan 19 1995 04:23:16:890PM		Gary McCracken	Summary: We did a fairly thorough scan of the poloidal capillaries from the mid-plane inner wall around to the lower outer wall using neon injection. The initial impression is that the screening does not vary by more than a factor of 2 from the different positions. The toroidal scan was less satifactory as the time for the gas to get in was longer. Very low signals were observed. While this could be overcome by increasing the plenum pressure or advancing the trigger we decided that we didn't have time to play around. We compared helium injection at the inner midplane, the private flux zone and the outer SOL, just above the nose. Again there was not a great variation. There was just one shot with argon, 950119024 , this one from the outer SOL. For all the shots the amount of impurity was low so that there was no significant change in plasma paramters. Changes in Prad, main and Zeff were barely detectable and Psol was about 800 kW
Jan 19 1995 09:11:30:710AM	950119001	Gary McCracken	Try to repeat shot 950111030, constant density nel04=1e20 m^-3, Ip=800 kA, with outer strike point on the vertical target. Inner and outer gaps to be > 1.5 cm. Fizzle
Jan 19 1995 09:26:24:390AM	950119002	Gary McCracken	Good shot. Ip and nel04 as requested with good flat top. Inject neon on the next shot through B side upper
Jan 19 1995 09:43:41:790AM	950119003	Gary McCracken	Good shot. Neon injected at 0.5 s and good signal seen on the McPherson with signal level similar to that on run 950111030. Change to NINJA system injection of neon on the next shot
Jan 19 1995 10:04:47:660AM	950119004	Gary McCracken	Good shot . NINJA triggered at 0.0 s through B16-001 valve (inner wall). Plenum pressure 34 torr. Signals on oma and McPherson very low. Increase plenum pressure on next shot.
Jan 19 1995 10:20:38:720AM	950119005	Gary McCracken	Good shot . NINJA triggered at 0.0 s through B16-001 valve (inner wall). Plenum pressure increased to 50 torr. Good signal on the McPherson, neon coming in at at 0.7 s. Will advance trigger on next shot
Jan 19 1995 10:35:23:660AM	950119006	Gary McCracken	Good shot . NINJA triggered at -0.2 s through B22-022 valve (inner target cone). Plenum pressure still at 50 torr. Good signal on the McPherson, neon coming in at at 0.4 s. level higher
Jan 19 1995 11:05:06:120AM	950119007	Gary McCracken	Good shot . NINJA triggered at -0.1 s through B31-086 valve (outer SOL) Plenum pressure still at 50 torr. Good signal on the McPherson and on the oma Previous shots also had reasonable oma signals, neon coming in at at about 0.5 s s.
Jan 19 1995 11:11:09:520AM	950119008	Gary McCracken	Good shot . NINJA triggered at -0.1 s through B31-086 valve (outer SOL) Plenum pressure still at 50 torr. Lower signal on the McPherson and on the oma neon coming in at at about 0.5 s s.
Jan 19 1995 11:29:44:630AM	950119009	Gary McCracken	Good shot . NINJA triggered at -0.1 s through B33-001 valve (outer lower wall) Plenum pressure still at 50 torr. Similar signals on the oma to the last shot neon still coming in at at about 0.5 s s. Interesting comparison between oma and McPherson in all the shots. The McPherson signal goes up faster than linearly throughout the flat top phase, effectively integrating the neon input, while the oma signal increases to a steady level and then slowly falls from about 0.8 s on.
Jan 19 1995 11:43:25:890AM	950119010	Gary McCracken	Good shot . NINJA turned off for background on spectrometers Argon pulse at 0.3 s for 20 ms to get Ti profile oma signal is not significantly lower than the last shot! However McPherson is well down
Jan 19 1995 11:57:17:370AM	950119011	Gary McCracken	Good shot . NINJA on and back to valve B16-001 ( inner wall) to get a shot under the same conditions as from shot #007 on. Pressure 50 torr, trigger -0.1 s oma Ne I increase to 30 units from about 10 units background Lithium pellet injected at 1.0 s. Disruption very shortly after
Jan 19 1995 12:14:59:320PM	950119012	Gary McCracken	Good shot . NINJA on valve B30-012 ( slot) . Pressure 50 torr, trigger -0.1 s No neon injected, NINJA problem. Lower background on both McPherson and oma oma level about 5 units, McPherson 1 unit
Jan 19 1995 12:33:26:360PM	950119013	Gary McCracken	Good shot . NINJA on valve F30-012 ( slot) . Pressure 50 torr, trigger -0.1 s Abandon the previous valve and try F port position. NINJA appeared to work, but no measureable signal on the oma
Jan 19 1995 12:47:22:890PM	950119014	Gary McCracken	Good shot . NINJA on valve K30-012 ( slot) . Pressure 50 torr, trigger -0.1 s K port position. Very little neon going in although NINJA records gas going in Probably because the the capillary tubes are longer and it is taking longer for the gas to get there
Jan 19 1995 12:54:54:390PM	950119015	Gary McCracken	Good shot . NINJA on valve D30-012, F30-012 H30-012 K30-012 all open ( slot) . Pressure 50 torr, trigger -0.1 s. Still very little gas in Abandon the toroidal scan and go back to the poloidal scan
Jan 19 1995 01:16:15:240PM	950119016	Gary McCracken	Start a epeat poloidal scan with more gas going in. Increase NINJA pressure to 72 torr. Trigger -0.2 s. Valve B16-001 (inner wall) About 50% increase in the McPherson signal compared with the previous shot at this valve.
Jan 19 1995 01:30:56:710PM	950119017	Gary McCracken	Good shot.NINJA pressure 72 torr. Trigger -0.2 s. Valve B26-019 (private flux zone). oma not working for this or the last shot McPherson signal is about 20 units less than half shot #007 with the same valve. Don't know why.
Jan 19 1995 01:45:00:600PM	950119018	Gary McCracken	Good shot.NINJA pressure 72 torr. Trigger -0.2 s. Valve B31-086 (outer SOL) McPherson signal is about 15 units
Jan 19 1995 02:00:17:140PM	950119019	Gary McCracken	Good shot. CHANGE TO HELIUM injection NINJA pressure 72 torr. Trigger 0.0s. Still Valve B31-086 (outer SOL) McPherson signal is about 3 times background
Jan 19 1995 02:16:59:170PM	950119020	Gary McCracken	Good shot. Background shot, no helium going in. Background on McPherson 0.5 - 1.0 units
Jan 19 1995 02:34:45:270PM	950119021	Gary McCracken	Raised helium plenum pressure to 125 torr, trigger=0.0 s NINJA valve B26-019 (private flux zone) oma fixed and set on He II. Good shot.
Jan 19 1995 02:53:22:010PM	950119022	Gary McCracken	Helium plenum pressure 125 torr, trigger=0.0 s NINJA valve B16-001 (inner wall). No spectroscopy yet Good shot.
Jan 19 1995 03:10:03:320PM	950119023	Gary McCracken	Helium plenum pressure 125 torr, trigger=0.0 s NINJA valve B31-086 (outer SOL). Good shot.

Physics Operator Comments
Jan 19 1995 08:39:24:980AM		Earl Marmar	MP 044: Impurity transport and impurity sputtering in the divertor (day 2) S.L. McCracken P.O. Marmar E.O. Daigle
Jan 19 1995 09:10:17:920AM	950119001	Earl Marmar	Fizzle
Jan 19 1995 09:21:13:780AM	950119002	Earl Marmar	Lower V OH1 30 v between 5 and 15 ms; 1.5e-5; plasma
Jan 19 1995 09:43:20:560AM	950119003	Earl Marmar	Raise Strkpsi .5 mm; Ne through B_side_lower at .5 s; Plasma
Jan 19 1995 10:01:30:160AM	950119004	Earl Marmar	Neon through NINJA; Plasma
Jan 19 1995 10:14:11:840AM	950119005	Earl Marmar	More neon; Fiddling with ramp down to attempt to avoid disruption; Plasma
Jan 19 1995 10:34:35:440AM	950119006	Earl Marmar	Speed up Ip rampdown; Disrupt earlier, but at same Ip.
Jan 19 1995 11:15:56:130AM	950119008	Earl Marmar	Back to original Ip ramp; fiddle with rampdown; lasted a little longer; plasma
Jan 19 1995 11:28:41:380AM	950119009	Earl Marmar	RCUR and CLEARIN tweaks late; better rampdown; Li pellet at 1.0 s; plasma

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	09:01:08:680AM	Plasma	Ok	No Faults.
2	09:12:27:480AM	Plasma	Ok	No Faults
3	09:29:23:060AM	Plasma	Ok	No Faults.
4	09:47:34:820AM	Plasma	Ok	No Faults.
5	10:05:59:410AM	Plasma	Ok	no faults
6	10:21:06:500AM	Plasma	Ok	no faults
7	10:36:16:200AM	Plasma	Ok	no faults
8	10:54:07:920AM	Plasma	Ok	no faults
9	11:15:21:500AM	Plasma	Ok	no faults
10	11:30:57:090AM	Plasma	Ok	no faults
11	11:45:19:070AM	Plasma	Ok	no faults
12	12:00:13:870PM	Plasma	Ok	no faults
13	12:16:27:130PM	Plasma	Ok	no faults
14	12:31:28:670PM	Plasma	Ok	no faults
15	12:43:49:270PM	Plasma	Ok	no faults
16	12:58:14:170PM	Plasma	Ok	no faults
17	01:16:46:300PM	Plasma	Ok	no faults
18	01:31:30:640PM	Plasma	Ok	no faults
19	01:47:11:610PM	Plasma	Ok	no faults
20	02:03:12:740PM	Plasma	Ok	no faults
21	02:22:06:830PM	Plasma	Ok	No Faults.
22	02:40:27:760PM	Plasma	Ok	No Faults.
23	02:54:45:300PM	Plasma	Ok	No Faults
24	03:14:43:050PM	Plasma	Ok	No Faults.
25	03:39:17:010PM	Test	Ok	ef2 current set too high
26	03:51:57:650PM	Test	Ok	good
27	04:03:41:950PM	Test	Ok	good shot
28	04:19:09:940PM	Test	Ok	good
29	04:31:14:840PM	Test	Ok	good
30	04:43:43:700PM	Test	Ok	good
31	04:55:54:120PM	Test	Ok	good
32	05:09:01:700PM	Test	Ok	good