Alcator C-Mod Run 960823 Information

Miniproposals

Miniproposal: 161

Date Filed: 7/18/1996

Title: JET/C-Mod Dimensionless Identity Experiments

First Author: Ian Hutchinson

Session Leader: Ian Hutchinson (shots 42-52)

Miniproposal: 167

Date Filed: 7/23/1996

Title: Impurity Screening: Divertor Compression and the Role of

First Author: Bruce Lipschultz

Session Leader: Jim Terry (shots 1-41)

Operators
Session leader(s):	Jim Terry,Ian Hutchinson
Physics operator(s):	Earl Marmar
Engineering operator(s):	Frank Silva,Vinny Bertolino,Joe Daigle

Engineering Operator Run Comment
mp167/mp161/marmer/silva

Session Leader Plans

Physics Operators Plans

Session Leader Summaries

Entered: Jul 7 2004 03:49:16:117PM

Author: To Be Determined

Triangularity Development

Trying zcur =-.01. Rxl drawn out to .015m.
Tried to fix the offset in Rxl. Found a code bug, direct reference to user10.

42 Pla Disrupts at .9s. Got delta_l=.45 (EFIT). Kappa =1.7.

Raise zcur to -.005m. Lower gas.
43 Fiz

Rerun the Rxl controller.
44 Pla Disrupts at .95. Rcur predictor says we are getting only .006. Phys
_a_out thinks we are about -1000. Get delta_l of .48. kapp=1.72

Install offset of 7000. RF off.
45 Fiz
Zxl raised 5mm to -1.3cm.
46 Psdud.

47 Pla Disrupts at 1.3s. The sign was wrong. We moved the xpoint in.

Rxl offset to -7000. Extend rxl control to try to keep EF2s on
48 Dud

49 Fiz

50 Fiz

51 Dud

52 Pla Disrupts at 1.27s. Vertical instability at 1.1s. Big density rise at
0.9s. Rxl gets to 1.76cm. delta_l gets to -.4. Gaps about 1.5cm.
This is a good first approximation to the JET equilibrium.
The gaps could be lowered. That would help the stability.

Entered: Jul 7 2004 03:49:16:133PM

Author: To Be Determined

Physics Operator: Earl Marmar
Session Leader: Jim Terry
Eng. Operator: Frank Silva, Joe Daigle, Vinnie Bertolino

In this run we implemented a portion of MP 167 - "Impurity Screening: Divertor Compression and the
Role of Core Impurity Confinement". This run was also an opportunity for
diagnostic alignment and RF conditioning, since the shots are fairly reproducible
(except for the type (Ar or Ne) of impurity puffed).
The goal of the run was to puff trace amounts of Ar and Ne into ohmic plasmas
under attached and detached divertor conditions. The screening of these recycling
impurities is measured, and spectroscopic diagnostics, viewing the X-point/divertor
region measure the puffed-impurity ionization states. These goals were met.
The additional goal of using the divertor RGA and the divertor Penning gauge to
measure simultaneously the impurity compression ratio was not met, since these
diagnostics were not available. I urge that the calibration Bside upper valve
(which was used for the gas puff) be checked in situ. Presently we are relying
on F. Bombarda's bench calibration, which is fine, but should be checked.

A quick summary of the groups of shots is:

Shot 8 - no puffed impurities ("background shot")
Shots 10, 19, 21, 23, 26, 28 - Good reproducible plasmas with Ar puff
Shot 31 - Good plasma with a density ramp to NL_05 to 1.30e20 - Ar Puff
Shots 33, 36, 38, 40 - Good plasma with same density ramp, but with Ne puff

We set up 0.8 MA - 5.3 T shot. Because the machine was so dirty (radiative), there
was very little power flowing in the SOL even at the relatively low density
(NL_05=0.7-0.9e20) obtained from 0.3 to 0.65 s. As a result, even the small
impurity puff was enough to detach the divertor plasma. The detachment was "classic"
L-mode detachment, in the sense that the pressures and temperatures at the
outer divertor dropped, the divertor bolometers showed that the divertor emissivity
peak moves to the X-pt, and the emission from lower ionization states (and D_alpha)
increased sharply at detachment. At these lower densities, 1-1.5 MW of RF reattached the divertor.

Starting with Shot 028 we put in a small density ramp from NL_05=0.9e20 to
~1.3e20. The ramp started at 0.65 s. At the higher densities the RF did
not always reattach the divertor.

The impurities were puffed thru the Bside-upper valve.
HIREX measured the core Ar density. Find that density in
\SPECTROSCOPY::TOP.HIREX.ANALYSIS.HIREX_2:Z_DENS

Central impurity confinement times are available from blow-off injections on
shots 033 (0.5 s), 036 (0.5 s), and 038 (0.5 s)

Chromex, viewing the X-point and the divertor surfaces measured lines from
ArI
ArII
NeI
and a clear recombination signature (shots 031 and 036)

The McPherson, viewing the X-point, measured resonance lines from the
following ionization states:
ArIII
ArIV
ArV
ArVI
ArVII
ArVIII
ArIX (line excitation threshold=253eV!)
NeIII
NeIV
NeVI
NeVII
NeVIII
The McPherson measured the core Ne content on shot 040 using the midplane NeVIII

The blow by blow accounting (through shot 41) follows:
Shot 001 dud

Shot 002 dud

Shot 003 dud

Shot 004 fizzle

Shot 005 dud

Shot 006 fizzle

Shot 007 stronger fizzle with high CII light

Shot 008 Full plasma (with final disruption at 250kA) - drooping Ip and RF from 1 to 1.3 MW
This will serve as a background (no puffed impurities) shot.

Shot 009 fizzle

Shot 010 Enable Ar puff - 45 ms programmed pulse width with 4.23 PSI plenum pressure
Good plasma, Ar clearly seen. McP on divertor ArVIII. Still drooping Ip.
Because of the high radiated power, there is very little power in the SOL.
This allows detachment at these lower densities. This detachment is seen on
the probes.

Shot 011 fizzle

Shot 012 Disrupted from natural (Mo) injection at 0.58 s. Ar puff same.
McP on divertor ArIII and ArIV.

Shot 013 fizzle

Shot 014 fizzle

Shot 015 delay Ar puff by 100 ms (it was coming in at 300 ms). Dud

Shot 016 Disrupted from natural (Mo) injection at 0.53 s. Ar puff same.
McP on divertor ArIII and ArIV.

Shot 017 dud

Shot 018 fizzle

Shot 019 Good plasma, Ar clearly seen. McP on divertor ArVII.

Shot 020 fizzle

Shot 021 Good plasma, Ar clearly seen. McP on divertor ArVI and ArVII.

Shot 022 fizzle

Shot 023 Good plasma, Ar clearly seen. Plasma in and out of detachment.
McP on divertor ArVIII (3p-4d not seen).

Shot 024 fizzle

Shot 025 dud - EF4 problem

Shot 026 Good plasma, Ar clearly seen. McP on divertor ArIX - seen only during RF.

Shot 027 fizzle

Shot 028 Good plasma, Ar clearly seen. Put in a small density ramp at .6 s (1.0e20 to 1.25e20)

Shot 029 dud - increased density ramp to 1.5e20 target

Shot 030 fizzle

Shot 031 Good plasma, Ar clearly seen. Density ramps to 1.35e20 (NL_04) McP on divertor ArIX.

Shot 032 fizzle

Shot 033 first attempt at Ne puff - same valve, small puff programming, plemun press is 2.5 PSI.
Ne seen by both McP (NeVII) and Chromex starting at .4 s. Plasma detaches at .685 s.
McP looking at X-pt.

Shot 034 dud

Shot 035 strong fizzle

Shot 036 Good plasma, Ne clearly seen by McP (Ne IV, VI, VII).

Shot 037 fizzle

Shot 038 Good plasma, Ne clearly seen by McP (Ne VIII) Plasma detached,
then reattaches at 0.94s. It also disrupted at 1 s due to a Mo injection.

Shot 039 fizzle - pointed McP at midplane for core Ne measurement

Shot 040 McP viewing midplane for core Ne measurement using NeVIII. Good plasma, disrupted
at 1 s.

Shot 041 dud - turned run over to IHH for "low triangularity setup" run - see run_summary_9608230.txt

Physics Operator Summaries

Entered: Jul 7 2004 04:36:56:660PM

Author: To Be Determined

Run summary for 960823

MP167 - Impurity Screening: session leader J. Terry
MP161 - Low triangularity development: session leader I. Hutchinson

Engineering setup:
start from 9608220052

gas setup - hybrid enable B-top and A-side
fill A-side with 20 PSI of D2
fill B-top with 5 PSI of D2
fill B-side-lower with 4 PSI of Ar

ECDC overnight in D_2, bake-out setpoint at 60.

PO: Marmar
EO: Silva, Daigle, Bertolino

A reasonably successful day. After some dud problems early, possibly related to
B_r offset, we got into the plasma/fizzle two step (with the occasional dud).
Playing with gas after a plasma did not seem to help. An OH voltage tweak was
also tried without success. We either needed at least one fizzle between
plasmas, or we had to wait for the base pressure to drop to around 1.4e-6 (on
the main torus ion gauge), or both. We did have one sequence of
plasma-dud-plasma, where the pressure criterion was satisfied for the second
plasma. We also had counter-examples with plasma-dud-fizzle-plasma, along with
plasma-fizzle-fizzle-plasma, and the last sequence of the day,
plasma-dud-fizzle-fizzle-dud-plasma.

It was an excellent day for engineering, with only two shots lost when the
supplies tripped out. There were no crowbars. We managed 52 attempts in a
little over 8 hours.

Most of the run was devoted to MP167. See Jim's session leader summary for
results. RF conditioning was piggy-backing, and several shots had more than 1.5
MW coupled. Hydrogen levels were high, and changing during the day, starting somewhere
around 10 to 15%, rising later in the day (see Rost for details).

At 3:00, we switched to MP161. We got 4 plasmas for this part of the run, and
the last shot of the day, #52, was starting to get close to the desired
equilibrium (see Ian's summary).

The rampdown has a problem, with no shot getting down below about .5 MA before
disrupting. EF2 lower quickly went to 0 current following the start of I_p
rampdown, followed closely by EF2U. We were unable to figure out the cause.
Playing with various x-point waveforms and gains did not solve it.

Shot summary:

Load 960822052; reduce prefill puff to 13 ms (from 16) -- cryopump not cold; TF
to flat across; undo part of RXL change in seg 2; put in slight I_p rampdown at
.6 s.

1. Dud
2. B_r offset to 4 mT from 2.5; dud
3. B_r offset to 3 mT; initial puff to 14 ms; dud
4. initial puff to 16 ms; fizzle
5. tweak oh voltages at 10 ms; puff to 15 ms; dud
6. puff to 18 ms; fizzle; very weak and late
7. puff to 17 ms; B_r offset to 2.5mT; fizzle; a little current this time
8. no changes; plasma; disrupt in rampdowm
9. eliminate 1 kA B_t uptick remnant; fizzle
10. b_r offset to 2 mT; argon enabled 46 ms, 4.2 psi; plasma; disrupt in rpdwn
11. no changes; fizzle
12. prog 800 kA straight across; B_R offset to 2.5 mT; plasma; disrupt early;
something fell in.
13. lower pre-puff to 16 ms; fizzle
14. b_r offset to 2 mT; gas to 17 ms; fizzle
15. delay argon puff by 100 ms; dud
16. b_r offset to 2.5 mT; plasma; disrupt at .56, same as 12;
17. zxl up a tad; dud
18. fizzle
19. rxl in by 5 mm; B_r offset to 3 mT; plasma; disrupt in rampdown
20. no changes; fizzle
21. rampdown tweaks, zcur change, try to match Goetz rampdown; plasma; disrupt
in rampdown
22. no changes; fizzle
23. no changes; plasma; disrupt in rpdwn
24. pre-puff to 16 ms; fizzle
25. power supply did (no EF4)
26. plasma; disrupt in rmpdwn
27. increase OH1 V by 30 at 15 ms, OH2's by 6V at same time; tweak late IC_EF4;
fizzle
28. reload 26; get rid of RXl out excursion; put density ramp in after 0.6 to
1.25e20; plasma; disrupt in rmpdwn
29. rxl tweak late -- decrease ramp, increase gain after 1.2 s; dud
30. pre-puff to 17 ms; fizzle
31, plasma, disrupt in rmpdwn
32. rxl gain to 0 at 1.2 s; fizzle
33. neon instead of argon; plasma, disrupt in r-d
34. dud
35. B_r offset to 2.5 mT; fizzle
36. plasma; disrupt in r-d
37. raise prepuff to 19 ms; fizzle
38. prepuff to 16 ms; plasma; big injection at ~1s, disrupt
39. add 1.5 ms to prepuff; fizzle
40. prepuff to 16 ms; plasma, disrupt at 1.2 s
41. prepuff to 12 ms; dud
42. reload 38; switching to MP161
RXL ramps tp +.015 at .8s, then flat
Zcur to -.01
.001 added to Rcur
Plasma; disrupt at .9 s
43. zcur to -.005; nl to .9e20; fizzle
44. plasma; disrupt at .95 s
45. RXL offset to 7000.; RF off; fizzle
46. ZXL to -.013; power supply dud
47. retry; plasma; disrupt at 1.39 s
48. RXL offset to -7000; gain on rxl and zxl kept on after 1.2 s; dud
49. fizzle
50. fizzle
51. B_r offset to 3 mT; dud
52. B_r offset to 2.5 mT, pre-puff to 17 ms; plasma

52 attempts, 19 plasmas, 21 fizzles, 10 duds, 2 power supply duds.

Session Leader Comments

Aug 23 1996 09:29:48:630AM Jim Terry Today we are attacking MP 167 - "Impurity Screening: Divertor Compression and the
Role of Core Impurity Confinement". This will also be an opportunity for
diagnostic alignment and RF conditioning, since we will try to keep
the shots reproducible (except for the impurity we puff).

Begin with standard fiducial if possible

Set up 0.8 MA - 5.3 T shot with density ramp from NL_04=0.9e20 to
a density high enough for detachment. The ramp will start around 0.65 s.
Trace Ar will injected thru the calibrated Bside-upper valve. Chromex and the
McPherson will view the X-point/divertor region. HIREX will measure
Ar in the core. The FSP will document detachment.

We will then switch from puffing Ar to puffing Ne thru the Bside-upper valve. The
McPherson will monitor "core" Ne and look to the X-point on alternate
shots. Chromex will look at Ne in the divertor. HIREX will use laser
blowoff to measure core impurity confinement. Approximately 10 shots will be
needed in this condition.

At the end of the run we may try to check the calibration of the
Bside-upper valve by measuring the pressure rises associated with
different "volt-sec" on the valve.

Aug 23 1996 09:33:20:130AM 960823001 Jim Terry dud

Aug 23 1996 09:34:35:290AM 960823002 Jim Terry dud

Aug 23 1996 09:34:45:270AM 960823003 Jim Terry dud

Aug 23 1996 09:34:59:450AM 960823004 Jim Terry fizzle

Aug 23 1996 09:39:37:560AM 960823005 Jim Terry dud

Aug 23 1996 09:47:00:520AM 960823006 Jim Terry fizzle

Aug 23 1996 10:00:56:110AM 960823007 Jim Terry stronger fizzle with high CII light

Aug 23 1996 10:10:07:150AM 960823008 Jim Terry Full plasma (with final disruption at 250kA) - drooping
Ip and RF from 1 to 1.3 MW

Aug 23 1996 10:18:25:160AM 960823009 Jim Terry fizzle

Aug 23 1996 10:38:53:500AM 960823010 Jim Terry Enable Ar puff - 45 ms programmed pulse width with 4.23 PSI
plenum pressure. Good plasma, Ar clearly seen.
McP on divertor ArVIII. Still drooping Ip.

Aug 23 1996 10:38:00:410AM 960823011 Jim Terry fizzle

Aug 23 1996 10:50:47:300AM 960823012 Jim Terry Disrupted from natural (Mo) injection at 0.58 s. Ar puff same as 10.

Aug 23 1996 10:55:39:090AM 960823013 Jim Terry fizzle

Aug 23 1996 11:01:19:360AM 960823014 Jim Terry fizzle

Aug 23 1996 11:30:37:780AM 960823015 Jim Terry delay Ar puff by 100 ms (it was coming in at 300 ms). Dud

Aug 23 1996 11:31:02:260AM 960823016 Jim Terry Disrupted from natural (Mo) injection at 0.53 s. Ar puff same

Aug 23 1996 11:31:19:780AM 960823017 Jim Terry dud

Aug 23 1996 11:47:42:780AM 960823018 Jim Terry fizzle

Aug 23 1996 12:11:13:280PM 960823019 Jim Terry Good plasma, Ar clearly seen. McP on divertor ArVII

Aug 23 1996 12:13:07:110PM 960823020 Jim Terry fizzle

Aug 23 1996 12:11:40:190PM 960823021 Jim Terry Good plasma, Ar clearly seen. McP on divertor ArVI and ArVII

Aug 23 1996 12:13:13:490PM 960823022 Jim Terry fizzle

Aug 23 1996 12:39:18:650PM 960823023 Jim Terry Good plasma, Ar clearly seen. Plasma in and out of detachment.
McP on divertor ArVIII (3p-4d not seen).

Aug 23 1996 12:39:31:420PM 960823024 Jim Terry fizzle

Aug 23 1996 12:40:11:480PM 960823025 Jim Terry dud - EF4 problem

Aug 23 1996 01:19:31:100PM 960823026 Jim Terry Good plasma, Ar clearly seen. McP on divertor ArIX - seen only during RF.

Aug 23 1996 01:20:14:740PM 960823027 Jim Terry fizzle

Aug 23 1996 01:20:52:590PM 960823028 Jim Terry Good plasma, Ar clearly seen.
Put in a small density ramp at .6 s (1.0e20 to 1.25e20)

Aug 23 1996 01:25:09:630PM 960823029 Jim Terry dud - attempting to increase the density ramp to 1.5e20 target

Aug 23 1996 02:17:42:220PM 960823030 Jim Terry fizzle

Aug 23 1996 02:18:09:710PM 960823031 Jim Terry Good plasma, Ar clearly seen.
Density ramps to 1.35e20 (NL_04) McP on divertor ArIX.

Aug 23 1996 02:18:23:290PM 960823032 Jim Terry fizzle

Aug 23 1996 02:19:31:020PM 960823033 Jim Terry first attempt at Ne puff - same valve, small puff programming,
plemun press is 2.5 PSI. Ne seen by both McP (NeVII) and Chromex
starting at .4 s. Plasma detaches at .685 s.

Aug 23 1996 02:19:45:170PM 960823034 Jim Terry dud

Aug 23 1996 02:19:56:110PM 960823035 Jim Terry fizzle

Aug 23 1996 02:36:01:550PM 960823036 Jim Terry Good plasma, Ne clearly seen by McP (Ne IV, VI, VII). Plasma detaches.

Aug 23 1996 03:05:18:680PM 960823037 Jim Terry fizzle

Aug 23 1996 03:05:06:410PM 960823038 Jim Terry Good plasma, Ne clearly seen by McP (Ne VIII) in divertor.
Plasma detached. It also disrupted at 1 s due to a Mo injection.

Aug 23 1996 03:05:50:620PM 960823039 Jim Terry fizzle - pointed McP at midplane for core Ne measurement

Aug 23 1996 03:06:23:720PM 960823040 Jim Terry McP at midplane for core Ne measurement using NeVIII.
Good plasma, disrupted at 1 s.

Aug 23 1996 03:11:46:280PM 960823041 Jim Terry dud - turned run over to IHH for "Low Triangularity" run

Physics Operator Comments

Engineering Operator Comments

Shot Time Type Status Comment

1 08:48:43:320AM Plasma Ok first shot 08:50/ no faults

2 09:00:31:190AM Plasma Ok no faults

3 09:09:40:340AM Plasma Ok no faults

4 09:27:08:300AM Plasma Ok no faults

5 09:36:49:210AM Plasma Ok no faults

6 09:44:58:450AM Plasma Ok no faults

7 09:53:57:780AM Plasma Ok no faults

8 10:01:56:800AM Plasma Ok no faults

9 10:11:19:210AM Plasma Ok

10 10:22:39:370AM Plasma Ok no faults

11 10:32:48:820AM Plasma Ok no faults

12 10:40:47:480AM Plasma Ok no faults

13 10:50:07:260AM Plasma Ok

14 10:58:11:400AM Plasma Ok no faults

15 11:06:34:100AM Plasma Ok

16 11:14:51:940AM Plasma Ok

17 11:24:05:110AM Plasma Ok

18 11:35:42:800AM Plasma Ok

19 11:43:30:540AM Plasma Ok

20 11:52:36:080AM Plasma Ok

21 12:00:42:860PM Plasma Ok

22 12:10:11:450PM Plasma Ok

23 12:18:59:530PM Plasma Ok

24 12:28:25:180PM Plasma Ok

25 12:36:28:260PM Plasma Bad no ef4

26 12:45:01:000PM Plasma Ok

27 12:55:25:620PM Plasma Ok

28 01:04:07:300PM Plasma Ok

29 01:13:40:070PM Plasma Ok

30 01:20:51:440PM Plasma Ok

31 01:28:31:570PM Plasma Ok

32 01:42:58:800PM Plasma Ok

33 01:54:01:510PM Plasma Ok

34 02:03:03:870PM Plasma Ok

35 02:11:38:890PM Plasma Ok

36 02:20:55:310PM Plasma Ok

37 02:29:51:470PM Plasma Ok

38 02:38:09:060PM Plasma Ok

39 02:47:59:690PM Plasma Ok

40 02:56:47:270PM Plasma Ok

41 03:08:08:360PM Plasma Ok

42 03:20:57:410PM Plasma Ok

43 03:37:13:680PM Plasma Ok

44 03:45:10:830PM Plasma Ok

45 03:55:38:400PM Plasma Ok

46 04:03:33:890PM Plasma Bad Magnet Resistance Fault.

47 04:09:38:040PM Plasma Ok

48 04:18:50:860PM Plasma Ok

49 04:25:53:040PM Plasma Ok

50 04:35:31:840PM Plasma Ok

51 04:45:11:100PM Plasma Ok

52 04:52:54:680PM Plasma Ok

Session Leader Comments
Aug 23 1996 09:29:48:630AM		Jim Terry	Today we are attacking MP 167 - "Impurity Screening: Divertor Compression and the Role of Core Impurity Confinement". This will also be an opportunity for diagnostic alignment and RF conditioning, since we will try to keep the shots reproducible (except for the impurity we puff). Begin with standard fiducial if possible Set up 0.8 MA - 5.3 T shot with density ramp from NL_04=0.9e20 to a density high enough for detachment. The ramp will start around 0.65 s. Trace Ar will injected thru the calibrated Bside-upper valve. Chromex and the McPherson will view the X-point/divertor region. HIREX will measure Ar in the core. The FSP will document detachment. We will then switch from puffing Ar to puffing Ne thru the Bside-upper valve. The McPherson will monitor "core" Ne and look to the X-point on alternate shots. Chromex will look at Ne in the divertor. HIREX will use laser blowoff to measure core impurity confinement. Approximately 10 shots will be needed in this condition. At the end of the run we may try to check the calibration of the Bside-upper valve by measuring the pressure rises associated with different "volt-sec" on the valve.
Aug 23 1996 09:33:20:130AM	960823001	Jim Terry	dud
Aug 23 1996 09:34:35:290AM	960823002	Jim Terry	dud
Aug 23 1996 09:34:45:270AM	960823003	Jim Terry	dud
Aug 23 1996 09:34:59:450AM	960823004	Jim Terry	fizzle
Aug 23 1996 09:39:37:560AM	960823005	Jim Terry	dud
Aug 23 1996 09:47:00:520AM	960823006	Jim Terry	fizzle
Aug 23 1996 10:00:56:110AM	960823007	Jim Terry	stronger fizzle with high CII light
Aug 23 1996 10:10:07:150AM	960823008	Jim Terry	Full plasma (with final disruption at 250kA) - drooping Ip and RF from 1 to 1.3 MW
Aug 23 1996 10:18:25:160AM	960823009	Jim Terry	fizzle
Aug 23 1996 10:38:53:500AM	960823010	Jim Terry	Enable Ar puff - 45 ms programmed pulse width with 4.23 PSI plenum pressure. Good plasma, Ar clearly seen. McP on divertor ArVIII. Still drooping Ip.
Aug 23 1996 10:38:00:410AM	960823011	Jim Terry	fizzle
Aug 23 1996 10:50:47:300AM	960823012	Jim Terry	Disrupted from natural (Mo) injection at 0.58 s. Ar puff same as 10.
Aug 23 1996 10:55:39:090AM	960823013	Jim Terry	fizzle
Aug 23 1996 11:01:19:360AM	960823014	Jim Terry	fizzle
Aug 23 1996 11:30:37:780AM	960823015	Jim Terry	delay Ar puff by 100 ms (it was coming in at 300 ms). Dud
Aug 23 1996 11:31:02:260AM	960823016	Jim Terry	Disrupted from natural (Mo) injection at 0.53 s. Ar puff same
Aug 23 1996 11:31:19:780AM	960823017	Jim Terry	dud
Aug 23 1996 11:47:42:780AM	960823018	Jim Terry	fizzle
Aug 23 1996 12:11:13:280PM	960823019	Jim Terry	Good plasma, Ar clearly seen. McP on divertor ArVII
Aug 23 1996 12:13:07:110PM	960823020	Jim Terry	fizzle
Aug 23 1996 12:11:40:190PM	960823021	Jim Terry	Good plasma, Ar clearly seen. McP on divertor ArVI and ArVII
Aug 23 1996 12:13:13:490PM	960823022	Jim Terry	fizzle
Aug 23 1996 12:39:18:650PM	960823023	Jim Terry	Good plasma, Ar clearly seen. Plasma in and out of detachment. McP on divertor ArVIII (3p-4d not seen).
Aug 23 1996 12:39:31:420PM	960823024	Jim Terry	fizzle
Aug 23 1996 12:40:11:480PM	960823025	Jim Terry	dud - EF4 problem
Aug 23 1996 01:19:31:100PM	960823026	Jim Terry	Good plasma, Ar clearly seen. McP on divertor ArIX - seen only during RF.
Aug 23 1996 01:20:14:740PM	960823027	Jim Terry	fizzle
Aug 23 1996 01:20:52:590PM	960823028	Jim Terry	Good plasma, Ar clearly seen. Put in a small density ramp at .6 s (1.0e20 to 1.25e20)
Aug 23 1996 01:25:09:630PM	960823029	Jim Terry	dud - attempting to increase the density ramp to 1.5e20 target
Aug 23 1996 02:17:42:220PM	960823030	Jim Terry	fizzle
Aug 23 1996 02:18:09:710PM	960823031	Jim Terry	Good plasma, Ar clearly seen. Density ramps to 1.35e20 (NL_04) McP on divertor ArIX.
Aug 23 1996 02:18:23:290PM	960823032	Jim Terry	fizzle
Aug 23 1996 02:19:31:020PM	960823033	Jim Terry	first attempt at Ne puff - same valve, small puff programming, plemun press is 2.5 PSI. Ne seen by both McP (NeVII) and Chromex starting at .4 s. Plasma detaches at .685 s.
Aug 23 1996 02:19:45:170PM	960823034	Jim Terry	dud
Aug 23 1996 02:19:56:110PM	960823035	Jim Terry	fizzle
Aug 23 1996 02:36:01:550PM	960823036	Jim Terry	Good plasma, Ne clearly seen by McP (Ne IV, VI, VII). Plasma detaches.
Aug 23 1996 03:05:18:680PM	960823037	Jim Terry	fizzle
Aug 23 1996 03:05:06:410PM	960823038	Jim Terry	Good plasma, Ne clearly seen by McP (Ne VIII) in divertor. Plasma detached. It also disrupted at 1 s due to a Mo injection.
Aug 23 1996 03:05:50:620PM	960823039	Jim Terry	fizzle - pointed McP at midplane for core Ne measurement
Aug 23 1996 03:06:23:720PM	960823040	Jim Terry	McP at midplane for core Ne measurement using NeVIII. Good plasma, disrupted at 1 s.
Aug 23 1996 03:11:46:280PM	960823041	Jim Terry	dud - turned run over to IHH for "Low Triangularity" run

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	08:48:43:320AM	Plasma	Ok	first shot 08:50/ no faults
2	09:00:31:190AM	Plasma	Ok	no faults
3	09:09:40:340AM	Plasma	Ok	no faults
4	09:27:08:300AM	Plasma	Ok	no faults
5	09:36:49:210AM	Plasma	Ok	no faults
6	09:44:58:450AM	Plasma	Ok	no faults
7	09:53:57:780AM	Plasma	Ok	no faults
8	10:01:56:800AM	Plasma	Ok	no faults
9	10:11:19:210AM	Plasma	Ok
10	10:22:39:370AM	Plasma	Ok	no faults
11	10:32:48:820AM	Plasma	Ok	no faults
12	10:40:47:480AM	Plasma	Ok	no faults
13	10:50:07:260AM	Plasma	Ok
14	10:58:11:400AM	Plasma	Ok	no faults
15	11:06:34:100AM	Plasma	Ok
16	11:14:51:940AM	Plasma	Ok
17	11:24:05:110AM	Plasma	Ok
18	11:35:42:800AM	Plasma	Ok
19	11:43:30:540AM	Plasma	Ok
20	11:52:36:080AM	Plasma	Ok
21	12:00:42:860PM	Plasma	Ok
22	12:10:11:450PM	Plasma	Ok
23	12:18:59:530PM	Plasma	Ok
24	12:28:25:180PM	Plasma	Ok
25	12:36:28:260PM	Plasma	Bad	no ef4
26	12:45:01:000PM	Plasma	Ok
27	12:55:25:620PM	Plasma	Ok
28	01:04:07:300PM	Plasma	Ok
29	01:13:40:070PM	Plasma	Ok
30	01:20:51:440PM	Plasma	Ok
31	01:28:31:570PM	Plasma	Ok
32	01:42:58:800PM	Plasma	Ok
33	01:54:01:510PM	Plasma	Ok
34	02:03:03:870PM	Plasma	Ok
35	02:11:38:890PM	Plasma	Ok
36	02:20:55:310PM	Plasma	Ok
37	02:29:51:470PM	Plasma	Ok
38	02:38:09:060PM	Plasma	Ok
39	02:47:59:690PM	Plasma	Ok
40	02:56:47:270PM	Plasma	Ok
41	03:08:08:360PM	Plasma	Ok
42	03:20:57:410PM	Plasma	Ok
43	03:37:13:680PM	Plasma	Ok
44	03:45:10:830PM	Plasma	Ok
45	03:55:38:400PM	Plasma	Ok
46	04:03:33:890PM	Plasma	Bad	Magnet Resistance Fault.
47	04:09:38:040PM	Plasma	Ok
48	04:18:50:860PM	Plasma	Ok
49	04:25:53:040PM	Plasma	Ok
50	04:35:31:840PM	Plasma	Ok
51	04:45:11:100PM	Plasma	Ok
52	04:52:54:680PM	Plasma	Ok