Alcator C-Mod Run 1110316 Information

Miniproposals

Miniproposal: 583

Date Filed: 9/29/2009

Title: Optimization of mode conversion flow drive

First Author: Yijun Lin

Session Leader: Yijun Lin (shots 1-33)

Operators
Session leader(s):	Yijun Lin
Physics operator(s):	Robert Granetz
Engineering operator(s):	Bill Cochran,Bill Parkin,Ed Fitzgerald

Engineering Operator Run Comment
MP583 - Optimization of mode conversion flow drive (in I-mode)

Session Leader Plans

Entered: Mar 15 2011 01:57:23:893PM

Author: Yijun Lin

MP583, optimization of mode conversion flow drive
(MC flow drive in I-mode)
Plan:

1. (5 shots) D+E to create I-mode, and also J-antenna check out at 50 MHz.
Also He3 puff checkout.

Use shot 1110309024, change Bt to 5.1 T, and add He3 puff from 0.2 to 0.35 sec.
nl04 = 0.7e20 m^-2, Ip = 1 MA, lower single null. No NINJA puff.

ICRF: D+E from 1.5 to 2.8 MW ramp-up from .6-1.5 sec for the first shot.
J antenna, 180 degree phase, 0.4-1 MW, 1.2-1.5 sec. To check out 50 MHz operation (particularly antenna phase control).

In order to get I-mode, I may have to adjust RF power, density and triangularity.

2. (3 shots) D+E to create I-mode, then J-antenna step powers (1 MW, 2, 2.5 MW) into I-mode plasmas.(watch out the He3 level and puff time).

(If I-H transition occurs, I may lower D+E power during J pulse).

3. (3 shots) Vary J antenna phases (same ICRF power as step 2)

4. (1 shot) locked mode shot for HIREX calibration. Reload shot 1110216003.

5. (3 shots) D+E to create I-mode, then J antenna max power (use the J-antenna phase that has max rotation).

6 (4 shots) Same RF power as in step 5, vary plasma density (I-mode may not be achievable in some densities).

7 (4 shots) Change Bt (5.4T/5.6T/4.8T/4.6T). Choose the condition with max rotation above.

8. If time permits, run a few shots at 1.2 MA.

Physics Operators Plans

Entered: Mar 15 2011 02:03:56:520PM

Author: Robert Granetz

Engineering setup for Wednesday 2011/03/16 MP583 - Optimization of mode conversion flow drive (in I-mode) Session leaders: Y. Lin Physics operator: R. Granetz Overnight: standard ECDC in D2 and 60 C bake. Run will start at 09:00 and end at 17:00 Power systems as on: 1110309024, except set TF PLC limit to 165 kA (1.0 MA, 5.1 T, 0.7e20 m-2, LSN) A-coil configuration: -Dtop +Dbot +Jtop -Jbot; Hybrid enabled (standard configuration for reversed field) Gas Setup: fill B-Top with 6 psi D2 Hybrid enabled (PG4) fill B-side lower with 2 psi Ne Hybrid enabled (PG1) leave B-side upper with 15 psi He3 Hybrid enabled (PG2) fill B-main (C-side) with 40 psi D2 Hybrid enabled (PG3) fill H-bottom with 1 psi Ar Hybrid enabled (PG5) leave NINJA as is Enable the following gate valves and shutters, assuming no vacuum problems: ECE, VUV, Z-bolo, HIREX-Sr, B-spectrometer GV, Xeus Torvac setup: keep gate valves open during pulse Specific diagnostics: FICXS ------------------------------------------------------------------------------ Boronization: no Impurity injector: no ICRF: yes, P <= 6 MW, J at 50 MHz LH: no DNB: yes Cryopump: no ------------------------------------------------------------------------------ Run plan: Load all segs from 1110309024. In seg 2, Change TF current to 141.7 kA (5.1 T), extend nl_04 flattop to t=1.5 s, set PG2 (B-side upper w/He3) to 150 ms starting at t=0.2 s, set PG1 (Ne) to 100 ms starting at t=0.3 s.

Session Leader Summaries

Entered: Mar 16 2011 05:10:18:500PM

Author: Yijun Lin

Summary:

By J antenna alone, we can drive rotation as large as 90 km/s at 2.5 MW power (shots 14,17). The rotation is in Co-Ip direction, with dW at no more than 50 kJ (1 MA, 5.1 T). Some of the shot enters I-mode with J only.

However, MCFD does not increase rotation when the instrinc rotation is already large (shots 10, 12, 18). On the other hand, intrinsic rotation from D/E does not rise when the rotation by MCFD is alreay large (shots 20, 22). Neither running them altogether (shot 23) has higher rotation with J alone. In By running J alone, we can get to this max rotation

Is there something we have never suspected that is limiting the max rotation?

(or heating plasma has some anti-effect with the flow drive...and they are canceling each other?)

if it is momentum confinement, this would indicated the momentum transport in I-mode is faster than in L-mode (because it is hotter??). Or we can say that the source for the rotation (both MCFD or intrinsic) is not understood.

0.8 MA plasma (shot 30) also show good MCFD, but adding D+E pushed it into H-mode, and the rotation is actually getting slower (likely due to density effect).

1.2 MA plasmas (shot 31), large rotation with J (dv > 110 km/s). But rotation slows down after adding D+E heating (plasma stays in I-mode).

1.2 MA, 5.4 T and 5.8 T (shot 32, 33), still large rotation with J, but not as large as shot 31. D/E heating did not change rotation.

In some cases, the rotation velocity seems to be very sensitive to density change in time (details to TBA).

Physics Operator Summaries

Entered: Mar 16 2011 04:58:45:413PM

Author: Robert Granetz

Run summary for Wednesday 2011/03/16 MP583 - Optimization of mode conversion flow drive (in I-mode) Session leaders: Y. Lin Physics operator: R. Granetz This was a reversed-field run with the J-port transmitters at 50 MHz. Most of the day was spent repeating the same plasma shot, 1.0 MA, 5.1 T, 0.7e20 m-2, LSN, with varying amounts of ICRF power from D, E, and J, and varying timing. We easily obtained I-modes, with Te >= 6 keV and high neutron rates. However, we also had many molybdenum injections, likely from the inboard strike point area, and these resulted in a large disruptivity. Late in the run we tried going to 1.2 MA, but had trouble getting past the early moly injections, so we backed down to 0.8 MA for a few shots, before successfully going back up to 1.2 MA from the final few shots. We also increased the TF field to 5.4 and then 5.8 T for the last two shots. Mode conversion flow drive was observed, but the session leader reports that there were also some inconsistencies that need to be looked at in more detail. Scorecard: 31 plasmas 0 duds 1 fizzle 0 power supply tests 0 no-power MDSplus cycle tests 1 no-power gas test -------------- Total: 33 shot cycles

Session Leader Comments

Mar 16 2011 08:54:33:710AM 1110316001 Yijun Lin gas test. no plasma

Mar 16 2011 08:54:07:817AM 1110316002 Yijun Lin shot 1: D+E up to 2.5 MW. J 0.6 MW and phase scan to check out 50 MHz operation.
5.1 T, nl 0.7, ip 1 MW, LSN, He3 150 ms, reversed field, try to get I-mode.

Mar 16 2011 09:28:26:920AM 1110316002 Yijun Lin shot 2: D+E up to 2.5 MW. J 0.6 MW and phase scan to check out 50 MHz operation.
nl 0.7, ip 1 MW, LSN, reversed field, try to get I-mode.

Disrupted at 1.1 sec. D/E ran fine. before J. I don't think there is I-mode.

Some control gate trouble for RF transmitter #4, being checked.

Next: move J pulse earlier so we can check out the J antenna.

Mar 16 2011 09:55:28:400AM 1110316003 Yijun Lin shot 3: early disruption.

Mar 16 2011 10:26:50:603AM 1110316004 Yijun Lin shot 4: D+E up to 2.5 MW. J 0.6-2 MW and phase scan to check out 50 MHz operation. bt 5.1 T, nl 0.7, ip 1 MW, LSN, reversed field, try to get I-mode.

J phase was not right. Need to do some work.

Mar 16 2011 10:31:46:973AM 1110316005 Yijun Lin shot 4: D+E up to 2.5 MW. J 0.6-2 MW and phase scan to check out 50 MHz operation. bt 5.1 T, nl 0.7, ip 1 MW, LSN, reversed field, try to get I-mode.

I-mode. rotation normal intrinsic rotation.
J phase was still not right. (fixing).

Next: move J power later.

Mar 16 2011 10:32:10:600AM 1110316005 Yijun Lin shot 4: D+E up to 2.5 MW. J 0.6-2 MW and phase scan to check out 50 MHz operation. bt 5.1 T, nl 0.7, ip 1 MW, LSN, reversed field, try to get I-mode.

I-mode. rotation normal intrinsic rotation.
J phase was still not right. (fixing).

Next: move J power later, and raise power.

Mar 16 2011 10:50:52:543AM 1110316005 Yijun Lin D+E up to 2.5 MW. J 0.6-2 MW and phase scan to check out 50 MHz operation. bt 5.1 T, nl 0.7, ip 1 MW, LSN, reversed field, try to get I-mode.

I-mode. rotation normal intrinsic rotation.
J phase was still not right. (see RF entry).

Next: move J power later, and raise J power.

Mar 16 2011 01:19:12:460PM 1110316006 Yijun Lin D+E up to 2.5 MW. J 2.3 MW. bt 5.1 T, nl 0.7, ip 1 MA, LSN, reversed field, He3 150 ms puff.

J at -90 degree phase. Enter I-mode when J was on....

The rotation velocity did not change with J power although significant increase of W.

Is it counter-Ip flow drive with co-Ip phasing (-90 degree)???

Next: Do +90 phase (counter-Ip phasing at rev. field)

Mar 16 2011 11:50:35:520AM 1110316007 Yijun Lin D+E up to 2.5 MW. J 2.3 MW. bt 5.1 T, nl 0.7, ip 1 MW, LSN, reversed field, He3 150 ms puff.

J programed at +90 degree (counter Ip) phase. Enter I-mode when J was on....
(but actuall got nearly 180 phase all time).

E port tripping.

Next: run J at -90 phase, and use the last part for a phase scan to find the control voltage for +90 phase.

Mar 16 2011 11:12:44:220AM 1110316008 Yijun Lin disrupted at 0.95 sec. inconclusive.

add Ne puff.
Next repeat.

Mar 16 2011 01:19:23:327PM 1110316009 Yijun Lin D+E up to 2.5 MW. J 2.3 MW. bt 5.1 T, nl 0.7, ip 1 MA, LSN, reversed field, He3 150 ms puff.

J programed at -90 degree (co Ip) phase. Enter I-mode when J was on....
But J was tripping. Figured out the control voltage for +90 phase...

Next: run J at +90 phase (counter-Ip wave direction)

Mar 16 2011 01:19:00:757PM 1110316010 Yijun Lin D+E up to 2.5 MW. J 2.3 MW. bt 5.1 T, nl 0.7, ip 1 MA, LSN, reversed field, He3 150 ms puff.

J programed at +90 degree (counter-Ip) phase.

Good RF. Good shot. Very high Te. 8 keV.

Possible counter-ip direction flow drive with J (as seen in sawtooth precursors and HIREX z-line).

Next: J at -90 degree (co-Ip) phase and see which way it goes.

Mar 16 2011 11:46:24:747AM 1110316011 Yijun Lin disrupted at 0.67 sec.

Mar 16 2011 01:18:50:763PM 1110316012 Yijun Lin D+E up to 2.5 MW. J 2.3 MW. bt 5.1 T, nl 0.7, ip 1 MA, LSN, reversed field, He3 150 ms puff.

J programed at -90 degree (co-Ip) phase.

Good RF. Good shot.

Rotation increases in the co-Ip direction with J.

Next: J only and see what is happening. -90 degree/co-Ip phase.

Mar 16 2011 01:18:40:067PM 1110316013 Yijun Lin D/E off, J 2.3 MW. bt 5.1 T, nl 0.7, ip 1 MA, LSN, reversed field, He3 150 ms puff.

J programed at -90 degree (co-Ip) phase. Faulted out early.

Rotation increases in the co-Ip direction with rather small W rise.
(normal MCFD case).

Next: repeat with +90 degree (counter-Ip) phase...(slightly lower power)

Mar 16 2011 01:18:30:093PM 1110316014 Yijun Lin D/E off, J 2.3 MW. bt 5.1 T, nl 0.7, ip 1 MA, LSN, reversed field, He3 150 ms puff.

J programed at +90 degree (counter-Ip) phase.
good shot. good RF. (Arturo said it is I-mode)
dW 34 kJ
dV 90 km/s
so it is still driving co-Ip direction...(also I-mode plays a role..just very complicated)

Next: redo shot 13, and hope RF is cleaner with -90 degree (co-Ip) phase

Mar 16 2011 01:18:18:967PM 1110316015 Yijun Lin D/E off, J 2.3 MW. bt 5.1 T, nl 0.7, ip 1 MA, LSN, reversed field, He3 150 ms puff.

J programed at -90 degree (co-Ip) phase.
good shot. good RF. but density went up to 0.9
dW 20 kJ
dV 40 km/s
so it is still driving co-Ip direction...apparently smaller effect than in shot 14.

Next: repeat. see if the density is under control.

Mar 16 2011 01:18:11:627PM 1110316016 Yijun Lin D/E off, J 2.3 MW. bt 5.1 T, nl 0.7, ip 1 MA, LSN, reversed field, He3 150 ms puff.

J programed at -90 degree (co-Ip) phase
good shot. good RF. but density went up to 0.9
dW 20 kJ
dV 53 km/s
density still went up, but not as much as shot 15.
so it is still driving co-Ip direction...
Matt said there were iron injections....Steve said the corner of antenna might be problematic at this phasing.

Next: 180 degree, heating phase. same power.

Mar 16 2011 01:18:04:320PM 1110316017 Yijun Lin D/E off, J 2.3 MW. bt 5.1 T, nl 0.7, ip 1 MA, LSN, reversed field, He3 150 ms puff.

J programed at 180 degree (dipole) phase.
good shot. good RF. Arturo said this is I-mode shot...
dW 40 kJ
dV 96 km/s
Very large rotation. Is it I-mode?

So I don't need D/E to get I-mode???

Next: run D+E, total 2.3 power. then add J.
(similar to shot 10, but J at 180 degree phase).

Mar 16 2011 01:43:50:373PM 1110316018 Yijun Lin D/E 2.3 MW, J 2.3 MW. Bt 5.1 T, nl 0.7, Ip 1 MA, LSN, reversed field, He3 150 ms puff.

J programed at 180 degree (dipole) phase.

good shot. good RF. good I-mode.
dV 95km/s from Ohmic.
Very large rotation.

Next: Run J first and D/E later.

Mar 16 2011 01:49:33:270PM 1110316019 Yijun Lin D/E 2.3 MW, J 2.3 MW. Bt 5.1 T, nl 0.7, Ip 1 MA, LSN, reversed field, He3 150 ms puff.

J programed at 180 degree (dipole) phase.

good shot. good RF. good I-mode. and H-mode in the end
dV 100 km/s from Ohmic.
Very large rotation.

(got 70 km/s from J only, then additional 30 km/s from D/E.

Next: Move D/E later, and let J drive significantl rotation first.

Mar 16 2011 02:15:43:210PM 1110316020 Yijun Lin D/E 2.3 MW, J 2.3 MW. Bt 5.1 T, nl 0.7, Ip 1 MA, LSN, reversed field, He3 150 ms puff.

J programed at 180 degree (dipole) phase.

good shot. good RF. good I-mode. and H-mode in the end
dV 100 km/s from Ohmic.
Very large rotation.

(got 85 km/s from J only, then additional 10 km/s from D/E.)

The rotation from J alone seems to be more than that in L-mode at the same Prf and density (to be checked later).

(but how to get even more rotation??? D and E heating does not increase
the plasma rotation...something is preventing the rotation increasing)

Does the edge Te gradient stay the same even with significant D/E heating? No increase in instrinc rotation?

Next: Locked mode shot for HIREX calibration. no RF.

Mar 16 2011 02:21:08:667PM 1110316021 Yijun Lin good locked mode calibration.
repeat 20.

Mar 16 2011 02:42:38:310PM 1110316022 Yijun Lin D/E 2.3 MW, J 2.3 MW. Bt 5.1 T, nl 0.7, Ip 1 MA, LSN, reversed field, He3 150 ms puff.

J programed at 180 degree (dipole) phase.

good shot. good RF. good I-mode.

(got dv~86 km/s from J only, then very little change from D+E with significant heating...)

(this is very puzzling result...) Looks like something is limiting the max rotation...

Next: Run D+E+J the same time

Mar 16 2011 03:07:32:763PM 1110316023 Yijun Lin D/E 2.3 MW, J 2.3 MW. Bt 5.1 T, nl 0.7, Ip 1 MA, LSN, reversed field, He3 150 ms puff.

J programed at 180 degree (dipole) phase.

good shot. good RF. good I-mode.

D/E/J together, but dV = 87 km/s is not larger than J alone in shot 22....More puzzling...

Summary: MCFD failing when the instrinc rotation is already large (shots 10, 12, 18), AND intrinsic rotation does not rise when the rotation by MCFD is alreay large (shots 20, 22). Neither running them altogether (shot 23). In By running J alone, we can get to this max rotation (shot 14,17)

Is there something we have never suspected that is limiting the max rotation?

if it is momentum confinement, this would indicated the momentum transport in I-mode is faster than in L-mode (because it is hotter??). Or we can say that the source for the rotation (both MCFD or intrinsic) is not understood.

Next: raise Ip to 1.2 MA, same RF waveform as shot 22.

Mar 16 2011 02:58:18:913PM 1110316024 Yijun Lin attempted 1.2 MA. disrupted 0.45 sec.

Mar 16 2011 03:10:44:640PM 1110316025 Yijun Lin fizzle

Mar 16 2011 03:23:23:697PM 1110316026 Yijun Lin disrupted at 0.5 sec.

Mar 16 2011 03:38:41:610PM 1110316027 Yijun Lin disrupted again, at 0.7 sec.
next: 0.8 MA, to get some data at lower Ip first.

Mar 16 2011 04:07:36:333PM 1110316028 Yijun Lin D/E 2.3 MW, J 2.3 MW. Bt 5.1 T, nl 0.7, Ip 0.8 MA, LSN, reversed field, He3 150 ms puff.

J programed at 180 degree (dipole) phase.

disrupted at 1.2 sec before D+E RF power.
good shot. good RF. good I-mode.
Max dV = 70 km/s (?) estimated from sawtooth precursor. (No HIREX Z-line data. data disk was full)

(Arturo: fluctuations change at 0.8 sec)
Rotation changes also at 0.8 sec. Rotation affects fluctuations??

Next: repeat

Mar 16 2011 04:11:09:450PM 1110316029 Yijun Lin early disruption.

Mar 16 2011 04:26:57:107PM 1110316030 Yijun Lin D/E 2.3 MW, J 2.3 MW. Bt 5.1 T, nl 0.7, Ip 0.8 MA, LSN, reversed field, He3 150 ms puff.

J programed at 180 degree (dipole) phase.

Good RF. D+E pushed the plasma into H-mode.
Max dV ~ 80 km/s
rotation lower with D+E into H-mode. (most like caused by the increase of ne, which reduced the flow drive efficiency).

Next: try 1.2 MA again.

Mar 16 2011 04:50:27:130PM 1110316031 Yijun Lin D/E 2.3 MW, J 2.3 MW. Bt 5.1 T, nl 0.7, Ip 1.2 MA, LSN, reversed field, He3 150 ms puff.

J programed at 180 degree (dipole) phase.

good plasma, Good RF, good I-mode... Entering I-mode at 0.85 sec.

Max dV > 130 km/s (A line), dv ~100 km/s (Z-Line) but rotation lower with D+E...??
(John said this is the largest rotation he has ever seen....?)

Next: 5.4 T, 1.2 MA.

Mar 16 2011 05:05:32:580PM 1110316032 Yijun Lin D/E 2.3 MW, J 2.3 MW. Bt 5.4 T, nl 0.7, Ip 1.2 MA, LSN, reversed field, He3 150 ms puff.

This has a higher Bt field.

J programed at 180 degree (dipole) phase.

good plasma, Good RF, good I-mode.

Rotation slightly slower than shot 31... But with D and E, rotation did not change.

Next: 5.8 T, 1.2 MA.

Mar 16 2011 05:11:18:790PM 1110316033 Yijun Lin D/E 2.3 MW, J 2.3 MW. Bt 5.8 T, nl 0.7, Ip 1.2 MA, LSN, reversed field, He3 150 ms puff.

This has a higher Bt field.

J programed at 180 degree (dipole) phase.

good plasma, Good RF, good I-mode.

Rotation. But with D and E, rotation did not change.
Possible a rather sensitive dependence vs. density (from 0.8 to 1.1 sec)

End of run.

Physics Operator Comments

Mar 16 2011 08:53:35:337AM 1110316001 Robert Granetz
Shot 01 -- No-power test of gas valves (first shot of the week) Next shot: go for plasma

Mar 16 2011 09:19:45:287AM 1110316002 Robert Granetz
Shot 02 -- Plasma, disrupted at t=1.08 s due to an impurity injection. 1.0 MA, 5.17 T, 0.7e20 m-2, LSN. D & E fired, but no J. Next shot: decrease Itf to 139800 A to get 5.1 T

Mar 16 2011 09:41:10:317AM 1110316002 Robert Granetz
We're having an extended break while some J-port RF problems are resolved.

Mar 16 2011 10:00:06:973AM 1110316003 Robert Granetz
Shot 03 -- Plasma, but disrupted very early. Looks very resistive. Good startup, so I don't know where the dirt came from. Power supplies look okay. Next shot: try again, no changes

Mar 16 2011 10:12:14:473AM 1110316004 Robert Granetz
Shot 04 -- Plasma, full length. 1.0 MA, 5.1 T, 0.7e20 m-2, LSN. Prf = 3-4 MW (D,E,J all ramped, with J at 50 MHz). Next shot: repeat, no DPCS changes, but the ICRF will be changing

Mar 16 2011 10:28:19:930AM 1110316005 Robert Granetz
Shot 05 -- Plasma, full length. Prf=3-4.2 MW (ramped); D,E,J all very clean. TS reaches 7 keV, GPC seems to saturate around 6 keV. Amanda is checking. Next shot: no DPCS changes

Mar 16 2011 10:42:13:263AM 1110316006 Robert Granetz
Shot 06 -- Plasma, disrupted at t=1.41 s. Looks like something came in around t=1.39 s. Prf=4.8 MW (2.6 from D+E, 2.2 from J, no ramp). Te=6-6.5 keV. Next shot: no DPCS changes

Mar 16 2011 10:58:30:663AM 1110316007 Robert Granetz
Shot 07 -- Plasma, disrupted at t=1.27 s. Lots of moly injections throughout the discharge. Prf=2.6 MW from D+E and 2.3 MW from J. Max Te = 6 keV. Next shot: no DPCS changes

Mar 16 2011 11:15:24:213AM 1110316008 Robert Granetz
Shot 08 -- Plasma, disrupted at t=0.94 s. Another moly injection. The plasma clearly doesn't like 5-6 MW of RF power. We don't have much freedom to move the strikepoints, so this problem will likely not improve. Next shot: Matt Reinke suggests that we might want to puff in more neon. I've increased the neon puff to 150 ms (was 100 ms), and delayed its start to t=0.4 s

Mar 16 2011 11:24:50:120AM 1110316009 Robert Granetz
Shot 09 -- Plasma, full length. Fewer natural moly injections. Maybe Matt's suggestion to puff more neon actually was the reason. J-port faulted badly though. Next shot: no DPCS changes

Mar 16 2011 11:40:27:723AM 1110316010 Robert Granetz
Shot 10 -- Plasma, full length. Very clean RF from all three antennas, Prf=5.0 MW. 1.0 MA, 5.1 T, 0.7e20 m-2, LSN. Next shot: no DPCS changes

Mar 16 2011 11:49:12:680AM 1110316011 Robert Granetz
Shot 11 -- Plasma, disrupted at t=0.68 s. Looks like a moly injection. Neon is still being puffed. Next shot: no DPCS changes

Mar 16 2011 12:02:39:697PM 1110316012 Robert Granetz
Shot 12 -- Plasma, disrupted at t=1.51 s (end of flattop). Big moly injection. Bad startup. Next shot: reduce pre-fill pulse by 2 ms

Mar 16 2011 12:18:29:350PM 1110316013 Robert Granetz
Shot 13 -- Plama, full length. Only J-port fired, and it had numerous faults. Much better startup. Next shot: no DPCS changes

Mar 16 2011 12:31:20:577PM 1110316014 Robert Granetz
Shot 14 -- Plasma, full length. J-port only (on purpose), 2.4 MW, clean. No injections at this reduced power. Next shot: no DPCS changes

Mar 16 2011 12:46:05:810PM 1110316015 Robert Granetz
Shot 15 -- Plasma, full length. J-port only (on purpose), Prf=2.4 MW, clean. Certainly no I-mode at this power level. Next shot: no DPCS changes

Mar 16 2011 12:58:51:093PM 1110316016 Robert Granetz
Shot 16 -- Plasma, disrupted at t=1.19 s. J-port only, 2.3 MW. Next shot: no DPCS changes

Mar 16 2011 01:12:53:263PM 1110316017 Robert Granetz
Shot 17 -- Plasma, full length. 1.0 MA, 5.1 T, 0.7e20 m-2, LSN. J-port only, Prf=2.4 MW. Next shot: no DPCS changes; NINJA D2 puff will be fired at t=1.45 s

Mar 16 2011 01:26:36:943PM 1110316018 Robert Granetz
Shot 18 -- Plasma, full length. Prf = 4.8 MW from D,E, & J. Got the I-mode back. Next shot: no DPCS changes

Mar 16 2011 01:38:11:653PM 1110316019 Robert Granetz
Shot 19 -- Plasma, disrupted during rampdown. Bad startup. Prf=4.6 MW from D,E, & J. Next shot: try adding -10 A to IC_EF4

Mar 16 2011 02:13:07:533PM 1110316020 Robert Granetz
Shot 20 -- Plasma, disrupted during rampdown. Prf=4.6 MW (D,E,J). Next shot: locked mode calibration shot; load seg 2 from 1110216003 into seg 3; turn off seg 2 and turn on seg 3; load Ar gas puff programming into J-bottom; turn off neon puff;

Mar 16 2011 02:22:09:203PM 1110316021 Robert Granetz
Shot 21 -- Plasma, full length. Locked mode shot to calibrated velocity measurement. 0.8 MA, 5.4 T, 0.4e20 m-2, LSN, ohmic. Next shot: reload shot 20; turn neon puff back on

Mar 16 2011 02:35:53:067PM 1110316022 Robert Granetz
Shot 22 -- Plasma, full length. Prf=2.6 MW from J and ~2.3 MW from D+E. 1.0 MA, 5.1 T, 0.7e20 m-2, LSN Next shot: no DPCS changes

Mar 16 2011 02:50:26:353PM 1110316023 Robert Granetz
Shot 23 -- Plasma, disrupted at t=1.32 s. Prf=4.7 MW from D,E,J, clean. Next shot: increase Ip to 1.2 MA

Mar 16 2011 03:00:48:583PM 1110316024 Robert Granetz
Shot 24 -- Plasma, but disrupted very early. I had programmed 1.2 MA, but it barely got to 1.0 MA when it disrupted. RF had not started yet. Next shot: tweak the Ip ramp

Mar 16 2011 03:12:11:933PM 1110316025 Robert Granetz
Shot 25 -- Fizzle. Next shot: add +10 A to IC_EF4 (back to its starting value at the beginning of the day)

Mar 16 2011 03:30:54:510PM 1110316026 Robert Granetz
Shot 26 -- Plasma, but disrupted at t=0.50 s. Looks like injections start 15 ms earlier. Next shot: slow the Ip ramp to have the same dIp/dt as the 1.0 MA shots, even though this results in reaching the 1.2 MA flattop at t=0.7 s.

Mar 16 2011 03:39:22:803PM 1110316027 Robert Granetz
Shot 27 -- Plasma, but disrupted at t=0.68 s, when Ip was up to 1.1 MA. I think it's time to bail. Next shot: lower Ip to 0.8 MA

Mar 16 2011 03:51:06:647PM 1110316028 Robert Granetz
Shot 28 -- Plasma, disurpted at t=1.20 s. 0.8 MA, 5.1 T, 0.7e20 m-2, LSN. Still getting injections. J-port only, Prf=2.6 MW Next shot: no DPCS changes

Mar 16 2011 04:12:06:460PM 1110316029 Robert Granetz
Shot 29 -- Plasma, but disrupted early; big injection. Good startup. Next shot: try again, no changes

Mar 16 2011 04:26:19:207PM 1110316030 Robert Granetz
Shot 30 -- Plasma, full length. 0.8 MA, 5.1 T, 0.7e20 m-2, LSN. Prf=2.6 MW from J, and 2.2 MW from D+E. Next shot: try 1.2 MA again

Mar 16 2011 04:48:15:140PM 1110316031 Robert Granetz
Shot 31 -- Plasma, disrupted at end-of-flattop. 1.2 MA, 5.1 T, 0.7e20 m-2, LSN. Prf=2.5 MW from J, 2.3 MW from D+E. Wth go up to 230 kJ, Te = 6.5 keV, and rotation got up to 120 km/s. Next shot: increase Btor to 5.4 T, keeping Ip at 1.2 MA

Mar 16 2011 04:56:43:533PM 1110316032 Robert Granetz
Shot 32 -- Plasma, full length. 1.2 MA, 5.4 T, 0.7e20 m-2, LSN. 2.6 MW from J, 2.1 MW from D+E Next shot: set Btor to 5.8 T (161 kA); increase PLC limit to 175 kA

Mar 16 2011 05:08:20:817PM 1110316033 Robert Granetz
Shot 33 -- Plasma, disrupted in rampdown. 1.2 MA, 5.8 T, 0.7e20 m-2, LSN. Prf=2.5 MW from J, 2.3 MW from D+E End of run

Engineering Operator Comments

Shot Time Type Status Comment

1 08:53:21:313AM Test Ok Gas Test

2 09:07:02:737AM Plasma Ok

3 09:53:14:763AM Plasma Ok

4 10:06:37:843AM Plasma Ok

5 10:22:20:057AM Plasma Ok

6 10:36:47:430AM Plasma Ok

7 10:50:21:437AM Plasma Ok

8 11:03:57:443AM Plasma Ok

9 11:16:55:363AM Plasma Ok

10 11:29:55:680AM Plasma Ok

11 11:44:10:417AM Plasma Ok

12 11:56:55:653AM Plasma Ok

13 12:10:01:610PM Plasma Ok

14 12:23:16:267PM Plasma Ok

15 12:36:27:360PM Plasma Ok

16 12:51:01:037PM Plasma Ok

17 01:03:47:303PM Plasma Ok

18 01:17:54:760PM Plasma Ok

19 01:31:15:767PM Plasma Ok

20 02:02:07:213PM Plasma Ok

21 02:16:18:300PM Plasma Ok

22 02:29:04:110PM Plasma Ok

23 02:42:24:623PM Plasma Ok

24 02:55:51:550PM Plasma Ok

25 03:08:35:573PM Plasma Ok

26 03:21:06:070PM Plasma Ok

27 03:33:31:490PM Plasma Ok

28 03:46:09:580PM Plasma Ok

29 04:07:21:083PM Plasma Ok

30 04:19:58:563PM Plasma Ok

31 04:34:21:873PM Plasma Ok

32 04:48:50:040PM Plasma Ok

33 05:03:53:497PM Plasma Ok

System Availability

Mar 16 2011 08:53:06:323AM

System Available Comment Availability
Changed Owner Description Who Can
Change
Active MHD no secured - tagged out Jun 02 2008 11:03AM (sears) Joe Snipes Active MHD Antenna sears,snipes
BES yes BES system is online Oct 21 2010 11:33AM (bespam) Bill Rowan Beam Emission Spectroscopy bespam,liao,rowan
Bolometers yes 2pi (D+F) working. All midplane and off-midplane diode arrays working except WB1AX. Midplane foils calibrated and PRAD_MAIN is being filled. Divertor/Ledge foils not yet ready. Jul 15 2010 08:27AM (mlreinke) Matt Reinke Bolometers hutch,mlreinke
Boronization yes Nov 16 2010 02:36PM (dekow) Jim Irby Boronization dekow,irby
CNPA yes Multiple channel CNPA available Oct 21 2010 07:11PM (parker) Ron Parker Compact Neutral Analyzer parker
Cryopump - Upper Divertor no Shut down. Helium dewar removed. LN2 manual valve and solenoid valves are closed and tagged. Apr 06 2010 10:51AM (labombard) Brian LaBombard Upper Divertor Cryopump irby,labombard
CXRS yes Wide-view CXRS system is online Oct 21 2010 11:33AM (bespam) Bill Rowan Charge Exchange Spectroscopy bespam,blip,liao,rachmcd,rowan
D Alpha yes \ha2_bright is available; \SPECTROSCOPY::TOP.VUV.VIS_SIGNALS:MCP_VIS_SIG1 is not available Jul 01 2009 09:45AM (terry) Jim Terry Balmer Alpha Monitor irby,terry,wolfe
Dalsa yes system is aligned; new calibrations (relative brightness and position) not yet implemented Jun 29 2010 10:27AM (marmar) Earl Marmar Visible Bremsstrahlung marmar
Disruption Mitigation yes operational, but turned off Nov 03 2009 04:59PM (granetz) Robert Granetz Gas Jet granetz,whyte
Divertor IR no Mar 06 2007 10:50AM Glen Wurden Divertor IR Digital Video gwurden,terry
Divertor IR Spectroscopy no Mar 06 2007 10:51AM Glen Wurden Divertor IR Spectroscopy gwurden,terry
DNB no in test mode only Nov 03 2009 05:01PM (granetz) Robert Granetz Diagnostic Neutral Beam dterry,granetz,gung
ECDC yes Operational Jun 26 2010 09:28PM (irby) Jim Irby 2.45 GHz, 3 kW, discharge cleaning system dekow,irby,pfeiffer
FRC-ECE yes All channels working and calibrated. Oct 27 2010 03:41PM (phillips) Perry Phillips Heterodyne ECE-32 channels phillips
G-Side Ratiomatic yes Gauges are operational. Jun 28 2010 08:02PM (labombard) Brian LaBombard G-side ratiomatic ionization gauge labombard,toland
Glow Discharge no Plugs for Power Supply and Controls have been unplugged and red tagged making system safe for In-Vessel Access. Apr 05 2010 11:18AM (dekow) Jim Irby 1 kV, 5 A, glow discharge system dekow,dterry,irby
GPC yes Operational. Jul 28 2009 04:23PM (hubbard) Amanda Hubbard ECE Polychromater hubbard,schmidt
GPC2 yes Most channels operational. Oct 22 2010 11:46AM (hubbard) Amanda Hubbard ECE Polychromater hubbard,schmidt
GPI yes The Xpt-view, the midplane-view cameras are operational. The innerwall GPI (coupled to the fast-diodes) is available. Jul 01 2009 09:45AM (terry) Jim Terry Gas Puff Imaging terry,zweben
H/D yes operating normally Jun 29 2010 10:26AM (marmar) Earl Marmar H/D Ratio marmar
HEAT yes Jun 26 2010 11:19PM (dekow) Gary Dekow - Machine Heaters - burke,dekow
Hirex Jr yes Hirex-Jr has been installed Jun 28 2010 03:36PM (rice) John Rice High Resolution X-Ray ince,rice
Hirex Sr yes System installed and aligned. Inverted Profiles for Ti are available upon request. Vtor profiles still under revision. Dec 17 2010 09:25AM (ypodpaly) John Rice High Resolution X-Ray ince,rice,ypodpaly
HXR yes 32 Channels operational Oct 23 2010 01:41PM (parker) Ron Parker Hard X-Ray Array faust,parker,schmidt
ICRF D-Antenna yes system checked out ok on 11006728. Jun 28 2010 04:57PM (ylin) Steve Wukitch D-port antenna wukitch,ylin
ICRF E-Antenna yes system checked out ok on 1100628 Jun 28 2010 04:57PM (ylin) Steve Wukitch E-port antenna wukitch,ylin
ICRF J-Antenna yes system checked out ok. conditioned to vacuum. Jun 28 2010 04:58PM (ylin) Steve Wukitch J-port antenna wukitch,ylin
Laser Blow-Off yes operational and tested Jul 20 2010 04:42PM (g) Martin Greenwald Impurity Injection System g,nthoward
Lower Hybrid yes LH working. New directional couplers installed at input to each klystron. Oct 21 2010 11:42AM (dterry) Ron Parker Lower Hybrid dterry,parker,wallaceg
Lower Hybrid Reflectometer yes 50GHz: up-, 60 GHz up- and down- Oct 21 2010 11:31AM (sgbaek) Arturo Dominguez Lower Hybrid Reflectometer dominguez,marmar,parker,sgbaek
Lower Hybrid SOL reflectometer yes profiles and fluctuations both working. If requested, please request LH launcher to be moved in. Jan 18 2011 03:07PM (cornwall) Cornwall Lau Lower Hybrid SOL reflectometer cornwall,wukitch,ylin
LPI no Beam line removed May 30 2008 02:09PM (bose) Earl Marmar Lithium Pellet Injector bose,marmar
Ly-alpha no WB4LY and LLY working but not during ICRF. WB1LY not attached due to pickup problems. LYMID attached but have profile problems. Aug 24 2010 09:17AM (mlreinke) Matt Reinke Lyman alpha cameras labombard,mlreinke
McPherson yes Spectra being collected and tree filled. Wavelength scan is broken so fixed on the Mo XXXI and XXXII lines. Jul 15 2010 08:28AM (mlreinke) Jim Terry VUV Spectrometer mlreinke,terry
Michelson yes Operational. Oct 22 2010 11:46AM (hubbard) Amanda Hubbard ECE Te Profiles hubbard,schmidt
MKS yes Gauges are operational Jun 28 2010 08:02PM (labombard) Brian LaBombard Baratron pressure gauges labombard
MLP no System is in edge lab. Version 2 drivers ready to test. Needs a student to help work on it. Jul 14 2009 09:20PM (labombard) Brian LaBombard Mirror Langmuir Probe Electronics System labombard
MSE no As of 6/10/09, MSE is calibrated & ready to go. Awaiting DNB. Jun 10 2009 10:34AM (sscott) Steve Scott Motional Stark Effect jinseok,sscott
Neutrons yes All systems are on and functional Jun 29 2010 12:56PM (fiore) Catherine Fiore Neutron Detectors fiore
Neuts and Hards yes PMT Neuts_hards, ssd_x01, ssd_x02, ssd_x03 Jun 26 2010 09:21PM (irby) Jim Irby X-Ray/Neutron Detectors at K-Hor irby
NINJA no Capillaries tested in-vessel. Jun 28 2010 08:08PM (labombard) Brian LaBombard NINJA gas puff labombard,terry
PCI yes Operational. AM 47.92 MHz. Mar 16 2011 08:24AM (ntsujii) Miklos Porkolab Phase Contrast Imaging emd,ennever,ntsujii,porkolab
Penning Gauges no High voltage power supplies are turned off, waiting for work at A-port horizontal to be finished. Jun 28 2010 08:07PM (labombard) Brian LaBombard Penning Ionization Gauges labombard
Plasma TV yes WIDE1, WIDE2 (chan 33), DANT, JANT and DIV are operational. Jul 01 2009 09:46AM (terry) Jim Terry Video of plasma via several cameras dekow,irby,terry,wolfe
Polarimeter no Safe for Machine Entry Sep 14 2007 12:17PM (irby) Jim Irby C-Mod Polarimeter irby
Power - Alternator Air Switch yes Jun 26 2010 11:19PM (dekow) Gary Dekow feeds all the other supplies cochran,dekow,dterry,irby
Power - PEI yes Jun 26 2010 11:19PM (dekow) Gary Dekow PEI System cochran,dekow,dterry,irby
Power - TMX yes Jun 26 2010 11:19PM (dekow) Gary Dekow Ef2s,. EFCs and A-Coils byford,cochran,dekow,dterry,irby
Power Systems yes Jun 26 2010 11:20PM (dekow) Jim Irby C-Mod Magnet Supplies byford,cochran,dekow,dterry,irby
Probe Array - ISD yes Operational. Jun 28 2010 08:03PM (labombard) Brian Labombard Inner Lower Divertor Probe Array labombard
Probe Array - LH yes Operational. Jun 28 2010 08:03PM (labombard) Brian LaBombard Lower Hybrid Probe Array labombard
Probe Array - OSD yes F and J outer divertor probes are operational. Jun 28 2010 08:04PM (labombard) Brian LaBombard Outer Lower Divertor Probe Array labombard
Probe Array - UDIV yes Operational, except probe#13 Jun 28 2010 08:04PM (labombard) Brian LaBombard Upper Divertor Probe Array labombard
Reflectometer no 1110216000 all waveguides disconnected to protect mixers Feb 16 2011 08:21AM (dominguez) Earl Marmar Reflectometer dominguez,marmar
Scanning Probe - ASP yes Operational. New Langmuir-Mach probe head installed. Jun 28 2010 08:05PM (labombard) Brian LaBombard A-Port Scanning Probe labombard
Scanning Probe - FSP yes Operational. Jun 28 2010 08:05PM (labombard) Brian LaBombard F-Port Scanning Probe labombard
Scanning Probe - WASP yes Both A and K units are operational. Coil polarity needs to be checked. Jun 28 2010 08:06PM (labombard) Brian LaBombard Inner Wall Scanning Probe labombard,nsmick
Sparker yes HV supply on, cable run to sparker at k-hor Jun 23 2010 02:41PM (irby) Jim Irby Field Emission Preionization for C-Mod dekow,irby,parkin
Surface Science Station yes SSS installed and leak tested. Oct 21 2010 11:31AM (ochoukov) Bruce Lipschultz Radially scanning probe located on K-port blip,ochoukov
TCI yes No new CO2 detector, so still missing edge channels Jun 23 2010 02:40PM (irby) Jim Irby Two-Color Interferometer irby,murray
TS - Core yes Operating with 2 lasers Oct 22 2010 01:06PM (jwhughes) Jerry Hughes Core Thomson scattering jwhughes,yma
TS - Edge yes Operational Jul 14 2010 11:54AM (jwhughes) Jerry Hughes Millimeter resolution edge Thomson scattering jwhughes,yma
Vispec no 350 and 670 nm, 4 spatial channels Nov 28 2007 09:58AM (agraf) Alex Graf Visible Spectrometer agraf
XEUS yes Raw spectra stored but not line brightness time histories are going into the tree yet. Jan 20 2011 10:45AM (mlreinke) Matt Reinke X-ray Extended Ultraviolet Spectrometer mlreinke
XTOMO yes Core system working. Edge system waiting for H-modes. Jul 01 2010 11:55AM (mlreinke) Bob Granetz X-Ray Tomography granetz,mlreinke

Session Leader Comments
Mar 16 2011 08:54:33:710AM	1110316001	Yijun Lin	gas test. no plasma
Mar 16 2011 08:54:07:817AM	1110316002	Yijun Lin	shot 1: D+E up to 2.5 MW. J 0.6 MW and phase scan to check out 50 MHz operation. 5.1 T, nl 0.7, ip 1 MW, LSN, He3 150 ms, reversed field, try to get I-mode.
Mar 16 2011 09:28:26:920AM	1110316002	Yijun Lin	shot 2: D+E up to 2.5 MW. J 0.6 MW and phase scan to check out 50 MHz operation. nl 0.7, ip 1 MW, LSN, reversed field, try to get I-mode. Disrupted at 1.1 sec. D/E ran fine. before J. I don't think there is I-mode. Some control gate trouble for RF transmitter #4, being checked. Next: move J pulse earlier so we can check out the J antenna.
Mar 16 2011 09:55:28:400AM	1110316003	Yijun Lin	shot 3: early disruption.
Mar 16 2011 10:26:50:603AM	1110316004	Yijun Lin	shot 4: D+E up to 2.5 MW. J 0.6-2 MW and phase scan to check out 50 MHz operation. bt 5.1 T, nl 0.7, ip 1 MW, LSN, reversed field, try to get I-mode. J phase was not right. Need to do some work.
Mar 16 2011 10:31:46:973AM	1110316005	Yijun Lin	shot 4: D+E up to 2.5 MW. J 0.6-2 MW and phase scan to check out 50 MHz operation. bt 5.1 T, nl 0.7, ip 1 MW, LSN, reversed field, try to get I-mode. I-mode. rotation normal intrinsic rotation. J phase was still not right. (fixing). Next: move J power later.
Mar 16 2011 10:32:10:600AM	1110316005	Yijun Lin	shot 4: D+E up to 2.5 MW. J 0.6-2 MW and phase scan to check out 50 MHz operation. bt 5.1 T, nl 0.7, ip 1 MW, LSN, reversed field, try to get I-mode. I-mode. rotation normal intrinsic rotation. J phase was still not right. (fixing). Next: move J power later, and raise power.
Mar 16 2011 10:50:52:543AM	1110316005	Yijun Lin	D+E up to 2.5 MW. J 0.6-2 MW and phase scan to check out 50 MHz operation. bt 5.1 T, nl 0.7, ip 1 MW, LSN, reversed field, try to get I-mode. I-mode. rotation normal intrinsic rotation. J phase was still not right. (see RF entry). Next: move J power later, and raise J power.
Mar 16 2011 01:19:12:460PM	1110316006	Yijun Lin	D+E up to 2.5 MW. J 2.3 MW. bt 5.1 T, nl 0.7, ip 1 MA, LSN, reversed field, He3 150 ms puff. J at -90 degree phase. Enter I-mode when J was on.... The rotation velocity did not change with J power although significant increase of W. Is it counter-Ip flow drive with co-Ip phasing (-90 degree)??? Next: Do +90 phase (counter-Ip phasing at rev. field)
Mar 16 2011 11:50:35:520AM	1110316007	Yijun Lin	D+E up to 2.5 MW. J 2.3 MW. bt 5.1 T, nl 0.7, ip 1 MW, LSN, reversed field, He3 150 ms puff. J programed at +90 degree (counter Ip) phase. Enter I-mode when J was on.... (but actuall got nearly 180 phase all time). E port tripping. Next: run J at -90 phase, and use the last part for a phase scan to find the control voltage for +90 phase.
Mar 16 2011 11:12:44:220AM	1110316008	Yijun Lin	disrupted at 0.95 sec. inconclusive. add Ne puff. Next repeat.
Mar 16 2011 01:19:23:327PM	1110316009	Yijun Lin	D+E up to 2.5 MW. J 2.3 MW. bt 5.1 T, nl 0.7, ip 1 MA, LSN, reversed field, He3 150 ms puff. J programed at -90 degree (co Ip) phase. Enter I-mode when J was on.... But J was tripping. Figured out the control voltage for +90 phase... Next: run J at +90 phase (counter-Ip wave direction)
Mar 16 2011 01:19:00:757PM	1110316010	Yijun Lin	D+E up to 2.5 MW. J 2.3 MW. bt 5.1 T, nl 0.7, ip 1 MA, LSN, reversed field, He3 150 ms puff. J programed at +90 degree (counter-Ip) phase. Good RF. Good shot. Very high Te. 8 keV. Possible counter-ip direction flow drive with J (as seen in sawtooth precursors and HIREX z-line). Next: J at -90 degree (co-Ip) phase and see which way it goes.
Mar 16 2011 11:46:24:747AM	1110316011	Yijun Lin	disrupted at 0.67 sec.
Mar 16 2011 01:18:50:763PM	1110316012	Yijun Lin	D+E up to 2.5 MW. J 2.3 MW. bt 5.1 T, nl 0.7, ip 1 MA, LSN, reversed field, He3 150 ms puff. J programed at -90 degree (co-Ip) phase. Good RF. Good shot. Rotation increases in the co-Ip direction with J. Next: J only and see what is happening. -90 degree/co-Ip phase.
Mar 16 2011 01:18:40:067PM	1110316013	Yijun Lin	D/E off, J 2.3 MW. bt 5.1 T, nl 0.7, ip 1 MA, LSN, reversed field, He3 150 ms puff. J programed at -90 degree (co-Ip) phase. Faulted out early. Rotation increases in the co-Ip direction with rather small W rise. (normal MCFD case). Next: repeat with +90 degree (counter-Ip) phase...(slightly lower power)
Mar 16 2011 01:18:30:093PM	1110316014	Yijun Lin	D/E off, J 2.3 MW. bt 5.1 T, nl 0.7, ip 1 MA, LSN, reversed field, He3 150 ms puff. J programed at +90 degree (counter-Ip) phase. good shot. good RF. (Arturo said it is I-mode) dW 34 kJ dV 90 km/s so it is still driving co-Ip direction...(also I-mode plays a role..just very complicated) Next: redo shot 13, and hope RF is cleaner with -90 degree (co-Ip) phase
Mar 16 2011 01:18:18:967PM	1110316015	Yijun Lin	D/E off, J 2.3 MW. bt 5.1 T, nl 0.7, ip 1 MA, LSN, reversed field, He3 150 ms puff. J programed at -90 degree (co-Ip) phase. good shot. good RF. but density went up to 0.9 dW 20 kJ dV 40 km/s so it is still driving co-Ip direction...apparently smaller effect than in shot 14. Next: repeat. see if the density is under control.
Mar 16 2011 01:18:11:627PM	1110316016	Yijun Lin	D/E off, J 2.3 MW. bt 5.1 T, nl 0.7, ip 1 MA, LSN, reversed field, He3 150 ms puff. J programed at -90 degree (co-Ip) phase good shot. good RF. but density went up to 0.9 dW 20 kJ dV 53 km/s density still went up, but not as much as shot 15. so it is still driving co-Ip direction... Matt said there were iron injections....Steve said the corner of antenna might be problematic at this phasing. Next: 180 degree, heating phase. same power.
Mar 16 2011 01:18:04:320PM	1110316017	Yijun Lin	D/E off, J 2.3 MW. bt 5.1 T, nl 0.7, ip 1 MA, LSN, reversed field, He3 150 ms puff. J programed at 180 degree (dipole) phase. good shot. good RF. Arturo said this is I-mode shot... dW 40 kJ dV 96 km/s Very large rotation. Is it I-mode? So I don't need D/E to get I-mode??? Next: run D+E, total 2.3 power. then add J. (similar to shot 10, but J at 180 degree phase).
Mar 16 2011 01:43:50:373PM	1110316018	Yijun Lin	D/E 2.3 MW, J 2.3 MW. Bt 5.1 T, nl 0.7, Ip 1 MA, LSN, reversed field, He3 150 ms puff. J programed at 180 degree (dipole) phase. good shot. good RF. good I-mode. dV 95km/s from Ohmic. Very large rotation. Next: Run J first and D/E later.
Mar 16 2011 01:49:33:270PM	1110316019	Yijun Lin	D/E 2.3 MW, J 2.3 MW. Bt 5.1 T, nl 0.7, Ip 1 MA, LSN, reversed field, He3 150 ms puff. J programed at 180 degree (dipole) phase. good shot. good RF. good I-mode. and H-mode in the end dV 100 km/s from Ohmic. Very large rotation. (got 70 km/s from J only, then additional 30 km/s from D/E. Next: Move D/E later, and let J drive significantl rotation first.
Mar 16 2011 02:15:43:210PM	1110316020	Yijun Lin	D/E 2.3 MW, J 2.3 MW. Bt 5.1 T, nl 0.7, Ip 1 MA, LSN, reversed field, He3 150 ms puff. J programed at 180 degree (dipole) phase. good shot. good RF. good I-mode. and H-mode in the end dV 100 km/s from Ohmic. Very large rotation. (got 85 km/s from J only, then additional 10 km/s from D/E.) The rotation from J alone seems to be more than that in L-mode at the same Prf and density (to be checked later). (but how to get even more rotation??? D and E heating does not increase the plasma rotation...something is preventing the rotation increasing) Does the edge Te gradient stay the same even with significant D/E heating? No increase in instrinc rotation? Next: Locked mode shot for HIREX calibration. no RF.
Mar 16 2011 02:21:08:667PM	1110316021	Yijun Lin	good locked mode calibration. repeat 20.
Mar 16 2011 02:42:38:310PM	1110316022	Yijun Lin	D/E 2.3 MW, J 2.3 MW. Bt 5.1 T, nl 0.7, Ip 1 MA, LSN, reversed field, He3 150 ms puff. J programed at 180 degree (dipole) phase. good shot. good RF. good I-mode. (got dv~86 km/s from J only, then very little change from D+E with significant heating...) (this is very puzzling result...) Looks like something is limiting the max rotation... Next: Run D+E+J the same time
Mar 16 2011 03:07:32:763PM	1110316023	Yijun Lin	D/E 2.3 MW, J 2.3 MW. Bt 5.1 T, nl 0.7, Ip 1 MA, LSN, reversed field, He3 150 ms puff. J programed at 180 degree (dipole) phase. good shot. good RF. good I-mode. D/E/J together, but dV = 87 km/s is not larger than J alone in shot 22....More puzzling... Summary: MCFD failing when the instrinc rotation is already large (shots 10, 12, 18), AND intrinsic rotation does not rise when the rotation by MCFD is alreay large (shots 20, 22). Neither running them altogether (shot 23). In By running J alone, we can get to this max rotation (shot 14,17) Is there something we have never suspected that is limiting the max rotation? if it is momentum confinement, this would indicated the momentum transport in I-mode is faster than in L-mode (because it is hotter??). Or we can say that the source for the rotation (both MCFD or intrinsic) is not understood. Next: raise Ip to 1.2 MA, same RF waveform as shot 22.
Mar 16 2011 02:58:18:913PM	1110316024	Yijun Lin	attempted 1.2 MA. disrupted 0.45 sec.
Mar 16 2011 03:10:44:640PM	1110316025	Yijun Lin	fizzle
Mar 16 2011 03:23:23:697PM	1110316026	Yijun Lin	disrupted at 0.5 sec.
Mar 16 2011 03:38:41:610PM	1110316027	Yijun Lin	disrupted again, at 0.7 sec. next: 0.8 MA, to get some data at lower Ip first.
Mar 16 2011 04:07:36:333PM	1110316028	Yijun Lin	D/E 2.3 MW, J 2.3 MW. Bt 5.1 T, nl 0.7, Ip 0.8 MA, LSN, reversed field, He3 150 ms puff. J programed at 180 degree (dipole) phase. disrupted at 1.2 sec before D+E RF power. good shot. good RF. good I-mode. Max dV = 70 km/s (?) estimated from sawtooth precursor. (No HIREX Z-line data. data disk was full) (Arturo: fluctuations change at 0.8 sec) Rotation changes also at 0.8 sec. Rotation affects fluctuations?? Next: repeat
Mar 16 2011 04:11:09:450PM	1110316029	Yijun Lin	early disruption.
Mar 16 2011 04:26:57:107PM	1110316030	Yijun Lin	D/E 2.3 MW, J 2.3 MW. Bt 5.1 T, nl 0.7, Ip 0.8 MA, LSN, reversed field, He3 150 ms puff. J programed at 180 degree (dipole) phase. Good RF. D+E pushed the plasma into H-mode. Max dV ~ 80 km/s rotation lower with D+E into H-mode. (most like caused by the increase of ne, which reduced the flow drive efficiency). Next: try 1.2 MA again.
Mar 16 2011 04:50:27:130PM	1110316031	Yijun Lin	D/E 2.3 MW, J 2.3 MW. Bt 5.1 T, nl 0.7, Ip 1.2 MA, LSN, reversed field, He3 150 ms puff. J programed at 180 degree (dipole) phase. good plasma, Good RF, good I-mode... Entering I-mode at 0.85 sec. Max dV > 130 km/s (A line), dv ~100 km/s (Z-Line) but rotation lower with D+E...?? (John said this is the largest rotation he has ever seen....?) Next: 5.4 T, 1.2 MA.
Mar 16 2011 05:05:32:580PM	1110316032	Yijun Lin	D/E 2.3 MW, J 2.3 MW. Bt 5.4 T, nl 0.7, Ip 1.2 MA, LSN, reversed field, He3 150 ms puff. This has a higher Bt field. J programed at 180 degree (dipole) phase. good plasma, Good RF, good I-mode. Rotation slightly slower than shot 31... But with D and E, rotation did not change. Next: 5.8 T, 1.2 MA.
Mar 16 2011 05:11:18:790PM	1110316033	Yijun Lin	D/E 2.3 MW, J 2.3 MW. Bt 5.8 T, nl 0.7, Ip 1.2 MA, LSN, reversed field, He3 150 ms puff. This has a higher Bt field. J programed at 180 degree (dipole) phase. good plasma, Good RF, good I-mode. Rotation. But with D and E, rotation did not change. Possible a rather sensitive dependence vs. density (from 0.8 to 1.1 sec) End of run.

Physics Operator Comments
Mar 16 2011 08:53:35:337AM	1110316001	Robert Granetz	Shot 01 -- No-power test of gas valves (first shot of the week) Next shot: go for plasma
Mar 16 2011 09:19:45:287AM	1110316002	Robert Granetz	Shot 02 -- Plasma, disrupted at t=1.08 s due to an impurity injection. 1.0 MA, 5.17 T, 0.7e20 m-2, LSN. D & E fired, but no J. Next shot: decrease Itf to 139800 A to get 5.1 T
Mar 16 2011 09:41:10:317AM	1110316002	Robert Granetz	We're having an extended break while some J-port RF problems are resolved.
Mar 16 2011 10:00:06:973AM	1110316003	Robert Granetz	Shot 03 -- Plasma, but disrupted very early. Looks very resistive. Good startup, so I don't know where the dirt came from. Power supplies look okay. Next shot: try again, no changes
Mar 16 2011 10:12:14:473AM	1110316004	Robert Granetz	Shot 04 -- Plasma, full length. 1.0 MA, 5.1 T, 0.7e20 m-2, LSN. Prf = 3-4 MW (D,E,J all ramped, with J at 50 MHz). Next shot: repeat, no DPCS changes, but the ICRF will be changing
Mar 16 2011 10:28:19:930AM	1110316005	Robert Granetz	Shot 05 -- Plasma, full length. Prf=3-4.2 MW (ramped); D,E,J all very clean. TS reaches 7 keV, GPC seems to saturate around 6 keV. Amanda is checking. Next shot: no DPCS changes
Mar 16 2011 10:42:13:263AM	1110316006	Robert Granetz	Shot 06 -- Plasma, disrupted at t=1.41 s. Looks like something came in around t=1.39 s. Prf=4.8 MW (2.6 from D+E, 2.2 from J, no ramp). Te=6-6.5 keV. Next shot: no DPCS changes
Mar 16 2011 10:58:30:663AM	1110316007	Robert Granetz	Shot 07 -- Plasma, disrupted at t=1.27 s. Lots of moly injections throughout the discharge. Prf=2.6 MW from D+E and 2.3 MW from J. Max Te = 6 keV. Next shot: no DPCS changes
Mar 16 2011 11:15:24:213AM	1110316008	Robert Granetz	Shot 08 -- Plasma, disrupted at t=0.94 s. Another moly injection. The plasma clearly doesn't like 5-6 MW of RF power. We don't have much freedom to move the strikepoints, so this problem will likely not improve. Next shot: Matt Reinke suggests that we might want to puff in more neon. I've increased the neon puff to 150 ms (was 100 ms), and delayed its start to t=0.4 s
Mar 16 2011 11:24:50:120AM	1110316009	Robert Granetz	Shot 09 -- Plasma, full length. Fewer natural moly injections. Maybe Matt's suggestion to puff more neon actually was the reason. J-port faulted badly though. Next shot: no DPCS changes
Mar 16 2011 11:40:27:723AM	1110316010	Robert Granetz	Shot 10 -- Plasma, full length. Very clean RF from all three antennas, Prf=5.0 MW. 1.0 MA, 5.1 T, 0.7e20 m-2, LSN. Next shot: no DPCS changes
Mar 16 2011 11:49:12:680AM	1110316011	Robert Granetz	Shot 11 -- Plasma, disrupted at t=0.68 s. Looks like a moly injection. Neon is still being puffed. Next shot: no DPCS changes
Mar 16 2011 12:02:39:697PM	1110316012	Robert Granetz	Shot 12 -- Plasma, disrupted at t=1.51 s (end of flattop). Big moly injection. Bad startup. Next shot: reduce pre-fill pulse by 2 ms
Mar 16 2011 12:18:29:350PM	1110316013	Robert Granetz	Shot 13 -- Plama, full length. Only J-port fired, and it had numerous faults. Much better startup. Next shot: no DPCS changes
Mar 16 2011 12:31:20:577PM	1110316014	Robert Granetz	Shot 14 -- Plasma, full length. J-port only (on purpose), 2.4 MW, clean. No injections at this reduced power. Next shot: no DPCS changes
Mar 16 2011 12:46:05:810PM	1110316015	Robert Granetz	Shot 15 -- Plasma, full length. J-port only (on purpose), Prf=2.4 MW, clean. Certainly no I-mode at this power level. Next shot: no DPCS changes
Mar 16 2011 12:58:51:093PM	1110316016	Robert Granetz	Shot 16 -- Plasma, disrupted at t=1.19 s. J-port only, 2.3 MW. Next shot: no DPCS changes
Mar 16 2011 01:12:53:263PM	1110316017	Robert Granetz	Shot 17 -- Plasma, full length. 1.0 MA, 5.1 T, 0.7e20 m-2, LSN. J-port only, Prf=2.4 MW. Next shot: no DPCS changes; NINJA D2 puff will be fired at t=1.45 s
Mar 16 2011 01:26:36:943PM	1110316018	Robert Granetz	Shot 18 -- Plasma, full length. Prf = 4.8 MW from D,E, & J. Got the I-mode back. Next shot: no DPCS changes
Mar 16 2011 01:38:11:653PM	1110316019	Robert Granetz	Shot 19 -- Plasma, disrupted during rampdown. Bad startup. Prf=4.6 MW from D,E, & J. Next shot: try adding -10 A to IC_EF4
Mar 16 2011 02:13:07:533PM	1110316020	Robert Granetz	Shot 20 -- Plasma, disrupted during rampdown. Prf=4.6 MW (D,E,J). Next shot: locked mode calibration shot; load seg 2 from 1110216003 into seg 3; turn off seg 2 and turn on seg 3; load Ar gas puff programming into J-bottom; turn off neon puff;
Mar 16 2011 02:22:09:203PM	1110316021	Robert Granetz	Shot 21 -- Plasma, full length. Locked mode shot to calibrated velocity measurement. 0.8 MA, 5.4 T, 0.4e20 m-2, LSN, ohmic. Next shot: reload shot 20; turn neon puff back on
Mar 16 2011 02:35:53:067PM	1110316022	Robert Granetz	Shot 22 -- Plasma, full length. Prf=2.6 MW from J and ~2.3 MW from D+E. 1.0 MA, 5.1 T, 0.7e20 m-2, LSN Next shot: no DPCS changes
Mar 16 2011 02:50:26:353PM	1110316023	Robert Granetz	Shot 23 -- Plasma, disrupted at t=1.32 s. Prf=4.7 MW from D,E,J, clean. Next shot: increase Ip to 1.2 MA
Mar 16 2011 03:00:48:583PM	1110316024	Robert Granetz	Shot 24 -- Plasma, but disrupted very early. I had programmed 1.2 MA, but it barely got to 1.0 MA when it disrupted. RF had not started yet. Next shot: tweak the Ip ramp
Mar 16 2011 03:12:11:933PM	1110316025	Robert Granetz	Shot 25 -- Fizzle. Next shot: add +10 A to IC_EF4 (back to its starting value at the beginning of the day)
Mar 16 2011 03:30:54:510PM	1110316026	Robert Granetz	Shot 26 -- Plasma, but disrupted at t=0.50 s. Looks like injections start 15 ms earlier. Next shot: slow the Ip ramp to have the same dIp/dt as the 1.0 MA shots, even though this results in reaching the 1.2 MA flattop at t=0.7 s.
Mar 16 2011 03:39:22:803PM	1110316027	Robert Granetz	Shot 27 -- Plasma, but disrupted at t=0.68 s, when Ip was up to 1.1 MA. I think it's time to bail. Next shot: lower Ip to 0.8 MA
Mar 16 2011 03:51:06:647PM	1110316028	Robert Granetz	Shot 28 -- Plasma, disurpted at t=1.20 s. 0.8 MA, 5.1 T, 0.7e20 m-2, LSN. Still getting injections. J-port only, Prf=2.6 MW Next shot: no DPCS changes
Mar 16 2011 04:12:06:460PM	1110316029	Robert Granetz	Shot 29 -- Plasma, but disrupted early; big injection. Good startup. Next shot: try again, no changes
Mar 16 2011 04:26:19:207PM	1110316030	Robert Granetz	Shot 30 -- Plasma, full length. 0.8 MA, 5.1 T, 0.7e20 m-2, LSN. Prf=2.6 MW from J, and 2.2 MW from D+E. Next shot: try 1.2 MA again
Mar 16 2011 04:48:15:140PM	1110316031	Robert Granetz	Shot 31 -- Plasma, disrupted at end-of-flattop. 1.2 MA, 5.1 T, 0.7e20 m-2, LSN. Prf=2.5 MW from J, 2.3 MW from D+E. Wth go up to 230 kJ, Te = 6.5 keV, and rotation got up to 120 km/s. Next shot: increase Btor to 5.4 T, keeping Ip at 1.2 MA
Mar 16 2011 04:56:43:533PM	1110316032	Robert Granetz	Shot 32 -- Plasma, full length. 1.2 MA, 5.4 T, 0.7e20 m-2, LSN. 2.6 MW from J, 2.1 MW from D+E Next shot: set Btor to 5.8 T (161 kA); increase PLC limit to 175 kA
Mar 16 2011 05:08:20:817PM	1110316033	Robert Granetz	Shot 33 -- Plasma, disrupted in rampdown. 1.2 MA, 5.8 T, 0.7e20 m-2, LSN. Prf=2.5 MW from J, 2.3 MW from D+E End of run

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	08:53:21:313AM	Test	Ok	Gas Test
2	09:07:02:737AM	Plasma	Ok
3	09:53:14:763AM	Plasma	Ok
4	10:06:37:843AM	Plasma	Ok
5	10:22:20:057AM	Plasma	Ok
6	10:36:47:430AM	Plasma	Ok
7	10:50:21:437AM	Plasma	Ok
8	11:03:57:443AM	Plasma	Ok
9	11:16:55:363AM	Plasma	Ok
10	11:29:55:680AM	Plasma	Ok
11	11:44:10:417AM	Plasma	Ok
12	11:56:55:653AM	Plasma	Ok
13	12:10:01:610PM	Plasma	Ok
14	12:23:16:267PM	Plasma	Ok
15	12:36:27:360PM	Plasma	Ok
16	12:51:01:037PM	Plasma	Ok
17	01:03:47:303PM	Plasma	Ok
18	01:17:54:760PM	Plasma	Ok
19	01:31:15:767PM	Plasma	Ok
20	02:02:07:213PM	Plasma	Ok
21	02:16:18:300PM	Plasma	Ok
22	02:29:04:110PM	Plasma	Ok
23	02:42:24:623PM	Plasma	Ok
24	02:55:51:550PM	Plasma	Ok
25	03:08:35:573PM	Plasma	Ok
26	03:21:06:070PM	Plasma	Ok
27	03:33:31:490PM	Plasma	Ok
28	03:46:09:580PM	Plasma	Ok
29	04:07:21:083PM	Plasma	Ok
30	04:19:58:563PM	Plasma	Ok
31	04:34:21:873PM	Plasma	Ok
32	04:48:50:040PM	Plasma	Ok
33	05:03:53:497PM	Plasma	Ok