Alcator C-Mod Run 1120217 Information

Miniproposals

Miniproposal: 667

Date Filed: 9/6/2011

Title: Commissioning of new SOL probes

First Author: Dan Brunner

Session Leader: Dan Brunner (shots 1-28)

Operators
Session leader(s):	Dan Brunner
Physics operator(s):	Jim Irby
Engineering operator(s):	Roza Tesfaye,Thomas Toland,Gary Dekow

Engineering Operator Run Comment
MP667: Commissioning of new SOL probes; PO: J.Irby, SL: D. Brunner

Session Leader Plans

Entered: Feb 16 2012 12:28:55:350PM

Author: Dan Brunner

MP667: Commissioning of new SOL probes

The goal of this run is to get a base data set of SOL parameters measured with the A-port Scanning Probe (ASP) Ion Sensitive Probe (ISP). The ISP should be able to plunge to the LCFS in ohmic plasmas. It would be a great tool to expand the standard SOL measurements to plasma potential and ion temperature. Although the work of Roman has shown an ISP is a good measurement of plasma potential, its measurements of ion temperature have yet to be robustly bench-marked. Thus this run day will be repeated with the ASP Retarding Field energy Analyzer (RFA); a diagnostic the community is confident can measure ion temperature, yet is limited to the depth it may scan because of heat flux.

The ion temperature has typically been measured to be around 2 times greater than the electron temperature in low collisionality SOLs. This is because electron thermal conductivity is much higher than ion thermal conductivity. But, as collisionality increases (as shown by Kocan), the ions transfer their energy to the electron through collisions and the electrons then conduct it along the field to the divertor. Thus the ion temperature should converge on the electron temperature as core plasma density increases.

The run will start with setting up the base plasma (5.4 T, 0.8 MA, 0.4×10²⁰ m^-2, 1111208013), making sure that the right gap is optimized for the scanning probe. A few shots will be taken (<5) to get the probe to the LCFS (Te=50 eV). Then we'll begin the density scan, stepping by 0.2×10²⁰ m^-2 until 1.6×10²⁰ m^-2, making sure to get at least one good scan at every density (7-14 shots). This is the most important part of the run to complete.

Time permitting change plasma current and do another density scan (adjusting n/nG appropriately).

Piggybacking: there have been a lot of requests to piggyback on this run. LH won out and may fire into the plasma after the last probe scan (1.2 s) as long as it doesn't hurt the next plasma and they don't spend too much time in the cell. BLaB will also be running the F-port probe to collect data for Odd Eric.

Physics Operators Plans

Entered: Feb 17 2012 08:05:24:347AM

Author: Jim Irby

-----------------
Engineering Setup
-----------------

Run begins at 09:00 and ends at 17:00

Power systems as on: 1111208013

Acoil: +Dtop -Dbot -Jtop +Jbot (standard) Hybrid Enabled

Gas setup:

Fill B-Top with 6 psi D2 Hybrid enabled (PG4)
fill B-side lower with 1 psi Ar Hybrid DISABLED (PG1)
leave B-side upper as is Hybrid DISABLED (PG2)
fill B-main (C-side) with 40 psi D2 Hybrid enabled (PG3)
fill NINJA with 10 psi D2 DISABLED

Enable gate-valves and shutters: ECE, VUV, HiREX Sr, Xeus
Leave z-bolo shutter as is (should be open)

Torvac gatevalve toggle (yes/no): no

Boronization(yes/no): no
Overnight ECDC (yes/no): no
ICRF(yes/no): no
LH(yes/no): no
Cryopump (yes/no): no
DNB (yes/no): no

Vessel temperature: 35/35/35

------------------------------
ECDC Parameters (if requested)
------------------------------
gas and pressure: D2 at 2e-4 Torr
sweep: 44/45/103 cm
scan: 20/120 s

Session Leader Summaries

Entered: Feb 17 2012 05:23:29:123PM

Author: Dan Brunner

This was a very useful run for the ASP ISP. It was great to have a steady, controlled target to probe. I scanned it to T_e > 70 eV on some shots. The Collector data is great at the lower densities. Initial results show a definite ion temperature profile, greater than twice the electron temperature. At higher densities I learned of the current system's short comings: The Guard collects too high of an electron current. Its supply is limited to ~0.5 A, when this is exceeded the voltage does not match the programmed. Thus the bias is not sufficient to reject ions. To remedy this I will switch to a power supply with double the current limit. Also, I will try a version of the ISP head with the Guard recessed slightly (~0.1 mm?) behind the base. I'll also work on a modified version of the Floating Base to switch its wire to a Langmuir probe. This will be useful to detect blobs and normalize the Collector current.

Additionally Brian operated the WASP and FSP to collect blobly data for Odd Eric. There were a few dedicated shots where the ISP was dwelled in Isat to fill in Odd' density scan. Ninja was fired at the end of each shot.

LH was allowed to pulse after the last probe scan. Greg reported very low densities, even when the launcher was pushed in to its limit. Its operation today showed that it likely will not be useful for runs next week.

Thanks everyone!

Physics Operator Summaries

Entered: Feb 17 2012 05:12:55:597PM

Author: Jim Irby

Machine ran well today except for a leak in the H-hor inner seal. We
had to slow or stop cooling several times. We opened up the cell to
verify that it was the seal and went from pumping to purging the seal
with argon after shot 22. We then had two fizzles (23,24) as we got the
argon levels in the vessel down to an acceptable level (see logbook).

We lost a digitizer in the magnetics rack and had to stop operation to
replace it. Test shot 04, 05, and 06, with 50 kA TF only, were required
to verify that the signals were ok.

tests 04,05,06
fizzle 23,24
plasma 01,02,03,07,08,09,10,11,12
13,14,15,16,17,18,19,20,21
22,23,24,25,26,27

Session Leader Comments

Feb 17 2012 08:12:56:890AM Dan Brunner Pre run: Purchased 2 dozen donuts. 1 dozen for Granetz, 1 dozen for the rest of us. Took test shot and everything looks ok.

Feb 17 2012 05:24:30:553PM Dan Brunner ASP ISP OPERATION
=================
Pre run: Purchased 2 dozen donuts. 1 dozen for Granetz, 1 dozen for the rest of us. Took test shot and everything looks ok.

Shot 1 ASP ISP
Setup: No scans.
Result: Good target.

Shot 2 ASP ISP
Setup: Enable ASP.
•Position: -15 mm
•Scan 1: 0.7 s
•Scan 2: 0.95 s
•Scan 3: 1.2 s
•LP: +90/-200 V 2 kHz
•Guard: ±200 V 2 kHz
•Collector: -10 V wrt Guard
•Base: floating, connected to flaky cable
Field: 5.4 T
Current: 0.8 MA
Density: 5.0×10¹⁹ m^-2
Config: LSN
ICRF: 0.0 MW
LH: trippy
Other: Ninja firing.
Result: ISP operating properly! Some arcs, cleaning up.

Shot 3 ASP ISP
Setup: Repeat Shot 2.
•Position: -12 mm
Field: 5.4 T
Current: 0.8 MA
Density: 5.0×10¹⁹ m^-2
Config: LSN
ICRF: 0.0 MW
LH: trippy
Other: Ninja firing, strange hitch on TF trace.
Result: Data looks good, only into T_e=25 eV.

Shot 4 ASP ISP
Setup: Repeat Shot 3.
•Position: -8 mm
•Guard: ±300 V 2 kHz
Result: No power shot last second call by Wolfe to debug shot 3 TF signal problem.

Shot 5 ASP ISP
Setup: Repeat Shot 4.
Result: No plasma shot to debug magnetic digitizer.

Shot 6 ASP ISP
Setup: Repeat Shot 5.
Result: No plamsa shot to debug magnetic digitizer.

Shot 7 ASP ISP
Setup: Repeat Shot 6.
Field: 5.4 T
Current: 0.8 MA
Density: 2.5-4.5×10¹⁹ m^-2
Config: LSN
ICRF: 0.0 MW
LH: trippy
Other: Ninja firing.
Result: Data looks good, only into T_e=30 eV. Bump in density at 0.9 s

Shot 8 ASP ISP
Setup: Repeat Shot 7.
•Position: -5 mm
Field: 5.4 T
Current: 0.8 MA
Density: 3.9×10¹⁹ m^-2
Config: LSN
ICRF: 0.0 MW
LH: trippy
Other: Ninja firing.
Result: Data looks good, only into T_e=35 eV.

Shot 9 ASP ISP
Setup: Repeat Shot 8.
•Position: -3 mm
Field: 5.4 T
Current: 0.8 MA
Density: 4.0×10¹⁹ m^-2
Config: LSN
ICRF: 0.0 MW
LH: trippy
Other: Ninja firing.
Result: Data looks good, into T_e=50 eV.

Shot 10 ASP ISP
Setup: Repeat Shot 9.
Field: 5.4 T
Current: 0.8 MA
Density: 4.0×10¹⁹ m^-2
Config: LSN
ICRF: 0.0 MW
LH: trippy
Other: Ninja firing.
Result: Third scan looks really good on the Collector.

Shot 11 ASP ISP
Setup: Repeat Shot 10.
Field: 5.4 T
Current: 0.8 MA
Density: 4.0×10¹⁹ m^-2
Config: LSN
ICRF: 0.0 MW
LH: trippy
Other: Ninja firing.
Result: Data looks great.

Shot 12 ASP ISP
Setup: Repeat Shot 11.
Field: 5.4 T
Current: 0.8 MA
Density: 5.6×10¹⁹ m^-2
Config: LSN
ICRF: 0.0 MW
LH: trippy
Other: Ninja firing.
Result: Too far in, exceeding supply current limits.

Shot 13 ASP ISP
Setup: Repeat Shot 12.
•Position: -4 mm
Field: 5.4 T
Current: 0.8 MA
Density: 5.6×10¹⁹ m^-2
Config: LSN
ICRF: 0.0 MW
LH: trippy
Other: Ninja firing.
Result: Too far in, exceeding supply current limits.

Shot 14 ASP ISP
Setup: Repeat Shot 13.
•Position: -5 mm
Field: 5.4 T
Current: 0.8 MA
Density: 6.0×10¹⁹ m^-2
Config: LSN
ICRF: 0.0 MW
LH: 0.3 MW
Other: Ninja firing.
Result: Great data.

Shot 15 ASP ISP
Setup: Repeat Shot 14.
Field: 5.4 T
Current: 0.8 MA
Density: 8.2×10¹⁹ m^-2
Config: LSN
ICRF: 0.0 MW
LH: trippy
Other: Ninja firing.
Result: Scan 2 good, too much current on other scans.

Shot 16 ASP ISP
Setup: Repeat Shot 15.
•Position: -6 mm
Field: 5.4 T
Current: 0.8 MA
Density: 8.5×10¹⁹ m^-2
Config: LSN
ICRF: 0.0 MW
LH: 0.3 MW
Other: Ninja firing.
Result: Last two scans good.

Shot 17 ASP ISP
Setup: Repeat Shot 16.
Field: 5.4 T
Current: 0.8 MA
Density: 9.1×10¹⁹ m^-2
Config: LSN
ICRF: 0.0 MW
LH: trippy
Other: Ninja firing.
Result: Too much current at peak of scan, Guard reaching current limit, voltage drops, cannot bias away ions. Going to need to switch power supplies.

Shot 18 ASP ISP
Setup: Repeat Shot 17.
•Position: -7 mm
Field: 5.4 T
Current: 0.8 MA
Density: 9.4×10¹⁹ m^-2
Config: LSN
ICRF: 0.0 MW
LH: trippy
Other: Ninja firing.
Result: Too much current on guard.

Shot 19 ASP ISP
Setup: Repeat Shot 18.
•Position: -18 mm
•Scan: dwell
•LP: -200 V DC
Field: 5.4 T
Current: 0.8 MA
Density: 9.6×10¹⁹ m^-2
Config: LSN
ICRF: 0.0 MW
LH: trippy
Other: Ninja firing.
Result: Good dwell scan.

Shot 20 ASP ISP
Setup: Reload scans of shot 18.
•Position: -7 mm
Field: 5.4 T
Current: 0.8 MA
Density: 1.16×10²⁰ m^-2
Config: LSN
ICRF: 0.0 MW
LH: trippy
Other: Ninja firing.
Result: Decent data in far SOL.

Shot 21 ASP ISP
Setup: Reload scans of shot 18.
•Position: -7 mm
Field: 5.4 T
Current: 0.8 MA
Density: 1.2×10²⁰ m^-2 ramping
Config: LSN
ICRF: 0.0 MW
LH: trippy
Other: Ninja firing.
Result: Decent data in far SOL.

Shot 22 ASP ISP
Setup: Repeat Shot 21.
•Position: -18 mm
•Scan: dwell
•LP: -200 V DC
Field: 5.4 T
Current: 0.8 MA
Density: 1.1×10²⁰ m^-2
Config: LSN
ICRF: 0.0 MW
LH: 0.1 MW trippy
Other: Ninja firing.
Result: Good dwell scan.

Shot 23 ASP ISP
Setup: Repeat Shot 22.
Result: Fizzle.

Shot 24 ASP ISP
Setup: Repeat Shot 23.
Result: Fizzle.

Shot 25 ASP ISP
Setup: Repeat Shot 24.
•Position: -18 mm
•Scan: dwell
•LP: -200 V DC
Field: 5.4 T
Current: 0.8 MA
Density: 1.1×10²⁰ m^-2 ramping
Config: LSN
ICRF: 0.0 MW
LH: trippy
Other: Ninja firing.
Result: Good dwell scan.

Shot 26 ASP ISP
Setup: Reload scans of shot 21.
•Position: -5 mm
Field: 5.4 T
Current: 0.8 MA
Density: 6.1×10¹⁹ m^-2 ramping
Config: LSN
ICRF: 0.0 MW
LH: trippy
Other: Ninja firing.
Result: Third scan good.

Shot 27 ASP ISP
Setup: Repeat Shot 26.
•Position: -7 mm
Field: 5.4 T
Current: 0.8 MA
Density: 7.0×10¹⁹ m^-2 ramping
Config: LSN
ICRF: 0.0 MW
LH: trippy
Other: Ninja firing.
Result: Great data.

Shot 27 ASP ISP
Setup: Repeat Shot 26.
Field: 5.4 T
Current: 0.8 MA
Density: 5.0×10¹⁹ m^-2 ramping
Config: LSN
ICRF: 0.0 MW
LH: 0.04 MW dummy
Other: Ninja firing.
Result: Great data.

Post Run: This was a very useful run for the ASP ISP. It was great to have a steady, controlled target to probe. I scanned it to T_e > 70 eV on some shots. The Collector data is great at the lower densities. Initial results show a definite ion temperature profile, greater than twice the electron temperature. At higher densities I learned of the current system's short comings: The Guard collects too high of an electron current. Its supply is limited to ~0.5 A, when this is exceeded the voltage does not match the programmed. Thus the bias is not sufficient to reject ions. To remedy this I will switch to a power supply with double the current limit. Also, I will try a version of the ISP head with the Guard recessed slightly (~0.1 mm?) behind the base. I'll also work on a modified version of the Floating Base to switch its wire to a Langmuir probe. This will be useful to detect blobs and normalize the Collector current.

Additionally Brian operated the WASP and FSP to collect blobly data for Odd Eric. There were a few dedicated shots where the ISP was dwelled in Isat to fill in Odd' density scan. Ninja was fired at the end of each shot.

LH was allowed to pulse after the last probe scan. Greg reported very low densities, even when the launcher was pushed in to its limit. Its operation today showed that it likely will not be useful for runs next week.

Thanks everyone!

Feb 17 2012 09:35:00:643AM 1120217002 Dan Brunner

Shot 2 ASP ISP
Setup: Enable ASP..
•Position: -20 mm
•Scan 1: 0.7 s
•Scan 2: 0.95 s
•Scan 3: 1.2 s
•LP: +90/-200 V 2 kHz
•Guard: ±200 V 2 kHz
•Collector: -10 V wrt Guard
•Base: floating, connected to flaky cable
Field: 5.4 T
Current: 0.8 MA
Density: 5.0×10¹⁹ m^-2
Config: LSN
ICRF: 0.0 MW
LH: trippy
Other: Ninja firing.
Result: ISP operating properly! Some arcs, cleaning up.

Feb 17 2012 09:37:08:470AM 1120217002 Dan Brunner

Shot 2 ASP ISP
Setup: Enable ASP.
•Position: -15 mm
•Scan 1: 0.7 s
•Scan 2: 0.95 s
•Scan 3: 1.2 s
•LP: +90/-200 V 2 kHz
•Guard: ±200 V 2 kHz
•Collector: -10 V wrt Guard
•Base: floating, connected to flaky cable
Field: 5.4 T
Current: 0.8 MA
Density: 5.0×10¹⁹ m^-2
Config: LSN
ICRF: 0.0 MW
LH: trippy
Other: Ninja firing.
Result: ISP operating properly! Some arcs, cleaning up.

Feb 17 2012 09:56:47:177AM 1120217003 Dan Brunner
Shot 3 ASP ISP
Setup: Repeat Shot 2.
•Position: -12 mm
Field: 5.4 T
Current: 0.8 MA
Density: 5.0×10¹⁹ m^-2
Config: LSN
ICRF: 0.0 MW
LH: trippy
Other: Ninja firing, strange hitch on TF trace.
Result: Data looks good, only into T_e=25 eV.

Feb 17 2012 10:53:43:603AM 1120217003 Dan Brunner
Shot 3 ASP ISP
Setup: Repeat Shot 2.
•Position: -12 mm
Field: 5.4 T
Current: 0.8 MA
Density: 5.0×10¹⁹ m^-2
Config: LSN
ICRF: 0.0 MW
LH: trippy
Other: Ninja firing, strange hitch on TF trace.
Result: Data looks good, only into T_e=25 eV.

Feb 17 2012 10:54:24:403AM 1120217004 Dan Brunner
Shot 4 ASP ISP
Setup: Repeat Shot 3.
•Position: -8 mm
•Guard: ±300 V 2 kHz
Result: No power shot last second call by Wolfe to debug shot 3 TF signal problem.

Feb 17 2012 10:56:09:963AM 1120217005 Dan Brunner
Shot 5 ASP ISP
Setup: Repeat Shot 4.
Result: No power shot to debug magnetic digitizer.

Feb 17 2012 11:15:51:990AM 1120217006 Dan Brunner
Shot 6 ASP ISP
Setup: Repeat Shot 5.
Result: No plamsa shot to debug magnetic digitizer.

Feb 17 2012 11:31:48:847AM 1120217006 Dan Brunner
Shot 6 ASP ISP
Setup: Repeat Shot 5.
Result: No plamsa shot to debug magnetic digitizer.

Feb 17 2012 11:32:06:067AM 1120217007 Dan Brunner
Shot 7 ASP ISP
Setup: Repeat Shot 6.
Field: 5.4 T
Current: 0.8 MA
Density: 2.5-4.5×10¹⁹ m^-2
Config: LSN
ICRF: 0.0 MW
LH: trippy
Other: Ninja firing.
Result: Data looks good, only into T_e=30 eV. Bump in density at 0.9 s

Feb 17 2012 11:44:37:987AM 1120217008 Dan Brunner
Shot 8 ASP ISP
Setup: Repeat Shot 7.
•Position: -5 mm
Field: 5.4 T
Current: 0.8 MA
Density: 3.9×10¹⁹ m^-2
Config: LSN
ICRF: 0.0 MW
LH: trippy
Other: Ninja firing.
Result: Data looks good, only into T_e=35 eV.

Feb 17 2012 12:05:53:393PM 1120217009 Dan Brunner
Shot 9 ASP ISP
Setup: Repeat Shot 8.
•Position: -3 mm
Field: 5.4 T
Current: 0.8 MA
Density: 4.0×10¹⁹ m^-2
Config: LSN
ICRF: 0.0 MW
LH: trippy
Other: Ninja firing.
Result: Data looks good, into T_e=50 eV.

Feb 17 2012 12:16:54:370PM 1120217010 Dan Brunner
Shot 10 ASP ISP
Setup: Repeat Shot 9.
Field: 5.4 T
Current: 0.8 MA
Density: 4.0×10¹⁹ m^-2
Config: LSN
ICRF: 0.0 MW
LH: trippy
Other: Ninja firing.
Result: Third scan looks really good on the Collector.

Feb 17 2012 12:29:42:847PM 1120217011 Dan Brunner
Shot 11 ASP ISP
Setup: Repeat Shot 10.
Field: 5.4 T
Current: 0.8 MA
Density: 4.0×10¹⁹ m^-2
Config: LSN
ICRF: 0.0 MW
LH: trippy
Other: Ninja firing.
Result: Data looks great.

Feb 17 2012 12:41:40:507PM 1120217012 Dan Brunner
Shot 12 ASP ISP
Setup: Repeat Shot 11.
Field: 5.4 T
Current: 0.8 MA
Density: 5.6×10¹⁹ m^-2
Config: LSN
ICRF: 0.0 MW
LH: trippy
Other: Ninja firing.
Result: Too far in, exceeding supply current limits.

Feb 17 2012 12:58:25:277PM 1120217013 Dan Brunner
Shot 13 ASP ISP
Setup: Repeat Shot 12.
•Position: -4 mm
Field: 5.4 T
Current: 0.8 MA
Density: 5.6×10¹⁹ m^-2
Config: LSN
ICRF: 0.0 MW
LH: trippy
Other: Ninja firing.
Result:

Feb 17 2012 01:13:01:520PM 1120217014 Dan Brunner
Shot 14 ASP ISP
Setup: Repeat Shot 13.
•Position: -5 mm
Field: 5.4 T
Current: 0.8 MA
Density: 6.0×10¹⁹ m^-2
Config: LSN
ICRF: 0.0 MW
LH: 0.3 MW, trippy
Other: Ninja firing.
Result: Great data.

Feb 17 2012 01:53:22:820PM 1120217016 Dan Brunner
Shot 16 ASP ISP
Setup: Repeat Shot 15.
•Position: -6 mm
Field: 5.4 T
Current: 0.8 MA
Density: 8.5×10¹⁹ m^-2
Config: LSN
ICRF: 0.0 MW
LH: 0.3 MW
Other: Ninja firing.
Result: Last two scans good.

Feb 17 2012 02:07:10:560PM 1120217016 Dan Brunner
Shot 16 ASP ISP
Setup: Repeat Shot 15.
•Position: -6 mm
Field: 5.4 T
Current: 0.8 MA
Density: 8.5×10¹⁹ m^-2
Config: LSN
ICRF: 0.0 MW
LH: 0.3 MW
Other: Ninja firing.
Result: Last two scans good.

Feb 17 2012 02:07:55:380PM 1120217017 Dan Brunner
Shot 17 ASP ISP
Setup: Repeat Shot 16.
•Position: -6 mm
Field: 5.4 T
Current: 0.8 MA
Density: 9.1×10¹⁹ m^-2
Config: LSN
ICRF: 0.0 MW
LH: trippy
Other: Ninja firing.
Result: Too much current at peak of scan, Guard reaching current limit, voltage drops, cannot bias away ions. Going to need to switch power supplies.

Feb 17 2012 02:27:30:753PM 1120217018 Dan Brunner
Shot 18 ASP ISP
Setup: Repeat Shot 17.
•Position: -7 mm
Field: 5.4 T
Current: 0.8 MA
Density: 9.4×10¹⁹ m^-2
Config: LSN
ICRF: 0.0 MW
LH: trippy
Other: Ninja firing.
Result: Too much current on guard.

Feb 17 2012 02:36:41:317PM 1120217018 Dan Brunner
Shot 18 ASP ISP
Setup: Repeat Shot 17.
•Position: -7 mm
Field: 5.4 T
Current: 0.8 MA
Density: 9.4×10¹⁹ m^-2
Config: LSN
ICRF: 0.0 MW
LH: trippy
Other: Ninja firing.
Result: Too much current on guard.

Feb 17 2012 02:37:04:593PM 1120217019 Dan Brunner
Shot 19 ASP ISP
Setup: Repeat Shot 18.
•Position: -18 mm
•Scan: dwell
•LP: -200 V DC
Field: 5.4 T
Current: 0.8 MA
Density: 9.6×10¹⁹ m^-2
Config: LSN
ICRF: 0.0 MW
LH: trippy
Other: Ninja firing.
Result: Good dwell scan.

Feb 17 2012 02:54:01:890PM 1120217020 Dan Brunner
Shot 20 ASP ISP
Setup: Reload scans of shot 18.
•Position: -7 mm
Field: 5.4 T
Current: 0.8 MA
Density: 1.16×10²⁰ m^-2
Config: LSN
ICRF: 0.0 MW
LH: trippy
Other: Ninja firing.
Result: Decent data in far SOL.

Feb 17 2012 03:08:38:890PM 1120217021 Dan Brunner
Shot 20 ASP ISP
Setup: Reload scans of shot 18.
•Position: -7 mm
Field: 5.4 T
Current: 0.8 MA
Density: 1.2×10²⁰ m^-2 ramping
Config: LSN
ICRF: 0.0 MW
LH: trippy
Other: Ninja firing.
Result: Decent data in far SOL.

Feb 17 2012 03:29:10:980PM 1120217022 Dan Brunner
Shot 22 ASP ISP
Setup: Repeat Shot 21.
•Position: -18 mm
•Scan: dwell
•LP: -200 V DC
Field: 5.4 T
Current: 0.8 MA
Density: 1.1×10²⁰ m^-2
Config: LSN
ICRF: 0.0 MW
LH: 0.1 MW trippy
Other: Ninja firing.
Result: Good dwell scan.

Feb 17 2012 03:46:33:920PM 1120217023 Dan Brunner
Shot 23 ASP ISP
Setup: Repeat Shot 22.
Result: Fizzle.

Feb 17 2012 04:12:23:260PM 1120217024 Dan Brunner
Shot 24 ASP ISP
Setup: Repeat Shot 23.
Result: Fizzle.

Feb 17 2012 04:15:09:020PM 1120217025 Dan Brunner
Shot 25 ASP ISP
Setup: Repeat Shot 24.
•Position: -18 mm
•Scan: dwell
•LP: -200 V DC
Field: 5.4 T
Current: 0.8 MA
Density: 1.1×10²⁰ m^-2 ramping
Config: LSN
ICRF: 0.0 MW
LH: trippy
Other: Ninja firing.
Result: Good dwell scan.

Feb 17 2012 04:37:16:450PM 1120217026 Dan Brunner
Shot 26 ASP ISP
Setup: Reload scans of shot 21.
•Position: -5 mm
Field: 5.4 T
Current: 0.8 MA
Density: 6.1×10¹⁹ m^-2 ramping
Config: LSN
ICRF: 0.0 MW
LH: trippy
Other: Ninja firing.
Result: Third scan good.

Feb 17 2012 04:52:14:933PM 1120217027 Dan Brunner
Shot 27 ASP ISP
Setup: Repeat Shot 26.
•Position: -7 mm
Field: 5.4 T
Current: 0.8 MA
Density: 7.0×10¹⁹ m^-2 ramping
Config: LSN
ICRF: 0.0 MW
LH: trippy
Other: Ninja firing.
Result: Great data.

Feb 17 2012 05:18:17:357PM 1120217027 Dan Brunner
Shot 27 ASP ISP
Setup: Repeat Shot 26.
•Position: -7 mm
Field: 5.4 T
Current: 0.8 MA
Density: 7.0×10¹⁹ m^-2 ramping
Config: LSN
ICRF: 0.0 MW
LH: trippy
Other: Ninja firing.
Result: Great data.

Feb 17 2012 05:18:43:793PM 1120217028 Dan Brunner
Shot 27 ASP ISP
Setup: Repeat Shot 26.
Field: 5.4 T
Current: 0.8 MA
Density: 5.0×10¹⁹ m^-2 ramping
Config: LSN
ICRF: 0.0 MW
LH: 0.04 MW dummy
Other: Ninja firing.
Result: Great data.

Physics Operator Comments

Feb 17 2012 09:26:29:957AM 1120217001 Jim Irby loaded from 1111208013
open tree done

nl04 request 0.40e20/m^2
150 kA TF
800 kA Ip
pg4 15 ms
pg3 prepuff starting at -20 ms

plasma into rampdown

Feb 17 2012 09:33:03:360AM 1120217002 Jim Irby changes --------------------------------

started TF rampdown at 1.5 s
got rid of TF backporch
forgot to load!

results --------------------------------

plasma into rampdown

Feb 17 2012 09:59:03:200AM 1120217002 Jim Irby changes --------------------------------

loaded TF change
put negative slope on RXL from .6 to 1.5 s with delta of 0.01 m
dropped density request to 3.5e19 early with slow ramp to 4.0e19 late
loaded

results --------------------------------

plasma into rampdown

Feb 17 2012 10:14:21:340AM 1120217004 Jim Irby changes --------------------------------

Ip rampdown made faster
Fizzle from 2.1 to 1.8 s
early density request dropped a little more and kept flat at 3.5e19/m^2
ZXL excursion reduced by 0.005 m
loaded

results --------------------------------

no power shot --- check BTOR signal

Feb 17 2012 11:00:38:423AM 1120217005 Jim Irby changes --------------------------------

TF only PLC test at 50 kA ---- check CPCI

results --------------------------------

still have a problem with the magnetics CPCI

Feb 17 2012 11:15:31:580AM 1120217006 Jim Irby changes --------------------------------

another test shot --- 50 kA TF PLC

results --------------------------------

looks like the CPCI worked this time

Feb 17 2012 11:28:18:663AM 1120217007 Jim Irby changes --------------------------------

no dpcs changes

try for plasma

results --------------------------------

plasma into rampdown

Feb 17 2012 11:39:25:697AM 1120217008 Jim Irby changes --------------------------------

nl04 prop gain from 2 to 3
nl04 integral gain to 0
density to 5e19/m^2 early then 4.5e19/m^2 late
loaded --- open tree done

results --------------------------------

plasma into rampdown --- density control much better

Feb 17 2012 12:07:08:147PM 1120217009 Jim Irby changes --------------------------------

no changes

results --------------------------------

plasma into rampdown

Feb 17 2012 12:11:53:197PM 1120217010 Jim Irby changes --------------------------------

no dpcs changes

results --------------------------------

plasma into rampdown ---

Feb 17 2012 12:23:24:113PM 1120217011 Jim Irby changes --------------------------------

repeat

results --------------------------------

plasma into rampdown

Feb 17 2012 12:40:27:477PM 1120217012 Jim Irby changes --------------------------------

increased RCUR by 0.0025 m from 1.25 s to 1.5 s
nl04 request from 4.5 to 6.0e19 /m^2
loaded --- open tree done

results --------------------------------

plasma into rampdown --- density a little low

Feb 17 2012 12:55:29:083PM 1120217013 Jim Irby changes --------------------------------

pg4 prepuff from 15 to 18 ms
nl04 request from 6 to 6.2e19/m^2
open tree done

results --------------------------------

plasma into rampdown --- a little better startup --- higher density

Feb 17 2012 01:10:43:747PM 1120217014 Jim Irby changes --------------------------------

nl04 request from 6.2 to 6.5e19/m^2
pg3 prepuff second point from 30 to 40 V
open tree done

results --------------------------------

plasma into rampdown --- hards are gone

Feb 17 2012 01:38:19:037PM 1120217015 Jim Irby changes --------------------------------

nl04 request from 6.5 to 8.5e19/m^2
OTD

results --------------------------------

plasma into rampdown

Feb 17 2012 01:49:37:530PM 1120217016 Jim Irby changes --------------------------------

no changes

results --------------------------------

delayed shot a few minutes ---- leak with m28 up to 4.8e-8 Torr (trip 4e-8). m40 up to 1.4e-9 Torr (trip at 2.0e-9).

big board RGA display worked...

plasma into rampdown ---- hards up a little

Feb 17 2012 02:12:21:277PM 1120217017 Jim Irby changes --------------------------------

jog outward from 1.25 to 1.5 s removed per LH request
nl04 request from 8.5 to 10.5e19/m^2

OTD

results --------------------------------

plasma into rampdown

Feb 17 2012 02:18:52:260PM 1120217018 Jim Irby changes --------------------------------

nl04 request to 12e19/m^2 by 0.5 s with ramp down to 10.5e19/m^2 by 1.5 s
otd

results --------------------------------

plasma into rampdown --- density nice and flat now

Feb 17 2012 02:38:47:190PM 1120217019 Jim Irby changes --------------------------------

repeat

results --------------------------------

plasma into rampdown

Feb 17 2012 02:46:05:097PM 1120217020 Jim Irby changes --------------------------------

nl04 request to 1.25e20/m^2 (rampdown from 1.4e20 early)
otd

results --------------------------------

RGA m28 limit of 4e-8 Torr exceeded again shortly after last discharge
m28 2.7e-8 Torr just before dicharge

plasma into rampdown --- hards very low

Feb 17 2012 03:06:56:640PM 1120217021 Jim Irby changes --------------------------------

nl04 request increased to 1.6e20/m^2 early
otd

results --------------------------------

m28 up again --- cooling to 3 psi for a while
m28 at 3.2e-8 Torr before shot

plasma for 1.44 s --- 1.4e20/m^2 at 1.5 s

Feb 17 2012 03:28:50:523PM 1120217022 Jim Irby changes --------------------------------

nl04 request: prop gain to 3.5, request 1.25e20/m^2 flat
otd

results --------------------------------

m28 4.3e-8 Torr before shot

plasma into rampdown --- density flat but too low

Feb 17 2012 03:48:17:527PM 1120217023 Jim Irby changes --------------------------------

nl04 request to 1.45e20/m^2 early
otd

results --------------------------------

Tommy started purging H-Hor inner seal with argon. Clear that this is our problem. We will try to leave it purged. m40 up to 4e-7 Torr, but m28 is 6.3e-9 Torr.

fizzle ---- argon?

Feb 17 2012 04:01:17:070PM 1120217024 Jim Irby changes --------------------------------

pg4 puff from 18 to 17 ms
otd

results --------------------------------

m40/m28 1.7e-7/6.2e-9

fizzle

Feb 17 2012 04:14:23:460PM 1120217025 Jim Irby changes --------------------------------

no changes

results --------------------------------

m40/m28 1.1e-7/1.3e-8

plasma into rampdown --- density still ramping up

Feb 17 2012 04:36:05:917PM 1120217026 Jim Irby changes --------------------------------

loaded from 1120217013
removed rcur outward jog
otd

results --------------------------------

m40/m28 6.9e-8/7.2e-9

plasma into rampdown

Feb 17 2012 04:49:30:977PM 1120217027 Jim Irby changes --------------------------------

nl04 request to 7.2e19/m^2
otd

results --------------------------------

m40/m28 6.9e-8/6.8e-9

plasma into rampdown

Feb 17 2012 05:12:01:197PM 1120217028 Jim Irby changes --------------------------------

nl04 request to 5.2e19/m^2
otd

results --------------------------------

m40 went to 1.5e-7 Torr before we stopped cooling
waited several minutes to get level back down

m40/m28 7.9e-8/6.8e-9

plasma into rampdown

Engineering Operator Comments

Shot Time Type Status Comment

1 09:13:44:920AM Plasma Ok

2 09:27:54:533AM Plasma Ok

3 09:45:53:753AM Plasma Ok

4 10:05:14:370AM Plasma Bad No power shot

5 10:50:32:273AM Test Ok TF ran

6 11:10:25:470AM Test Ok TF ran okay

7 11:21:14:827AM Plasma Ok

8 11:35:13:037AM Plasma Ok

9 11:50:47:810AM Plasma Ok

10 12:06:56:930PM Plasma Ok

11 12:20:36:750PM Plasma Ok

12 12:34:19:597PM Plasma Ok

13 12:50:33:833PM Plasma Ok

14 01:06:45:573PM Plasma Ok

15 01:22:57:957PM Plasma Ok

16 01:42:48:043PM Plasma Ok

17 01:57:35:867PM Plasma Ok

18 02:13:44:807PM Plasma Ok

19 02:28:23:423PM Plasma Ok

20 02:43:26:140PM Plasma Ok

21 03:01:37:447PM Plasma Ok

22 03:18:41:850PM Plasma Ok

23 03:43:09:283PM Plasma Ok

24 03:56:07:213PM Plasma Ok

25 04:09:07:243PM Plasma Ok

26 04:29:40:430PM Plasma Ok

27 04:46:10:183PM Plasma Ok

28 05:09:43:030PM Plasma Ok

System Availability

Feb 17 2012 09:13:24:697AM

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 golfit
BES yes BES system is online Nov 22 2011 02:21PM (bespam) Bill Rowan Beam Emission Spectroscopy bespam,liao,rowan
Bolometers yes Midplane and LEDGE-AX diodes functioning properly. Midplane bolometers working and calibrated. LEDGE/DIV bolometers working, but toaster calibration not yet complete. Jan 23 2012 12:02PM (mlreinke) Matt Reinke Bolometers hutch,mlreinke
Boronization no Bottle Removed. System has been tested and will be ready once bottle is installed Jan 09 2012 06:32AM (dekow) Jim Irby Boronization dekow,irby
CECE no Jan 06 2012 03:48PM Anne White Correlation ECE whitea
CNPA yes Multiple channel CNPA available, no safety risk for in-vessel access Apr 14 2011 12:01PM (parker) Ron Parker Compact Neutral Analyzer parker
Cryopump - Upper Divertor yes Operational. He level meter not working on 500L dewar. Frank will take manual readings. Jan 11 2012 11:46AM (labombard) Brian LaBombard Upper Divertor Cryopump dekow,irby,labombard
CXRS yes core-CXRS system is online Nov 22 2011 02:21PM (bespam) Bill Rowan Charge Exchange Spectroscopy bespam,blip,liao,rachmcd,rowan
CXRS edge yes Michael CHurchill has primary responsibility at the moment Apr 19 2011 11:44AM (blip) Bruce Lipshultz Measurement of CXR light in the pedestal region at both the high- and low-field sides blip,rmchurch
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 no system is is installed and aligned, but not functional (appears to be a broken cable) Dec 05 2011 02:41PM (marmar) Earl Marmar Visible Bremsstrahlung Imaging marmar
Disruption Mitigation no gas jet valve disabled on 2011/04/13 Apr 13 2011 02:04PM (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
DMBolo AXUV diodes yes Diodes are taking usable data. Not all post-processing code is working yet. Feb 01 2012 01:24PM (golynyk) Geoff Olynyk Set of six AXUV diodes in a toroidal array of midplane wall boxes. golynyk,granetz,mlreinke,whyte
DNB yes Dec 01 2011 11:46AM (granetz) Robert Granetz Diagnostic Neutral Beam dterry,granetz,mochung
ECDC yes Operational as of 11/19/11 Nov 22 2011 03:01PM (irby) Jim Irby 2.45 GHz, 3 kW, discharge cleaning system dekow,irby,pfeiffer
FRC-ECE no Power off to RF and IF sections- Power on to DA Apr 11 2011 02:54PM (phillips) Perry Phillips Heterodyne ECE-32 channels bespam,liao,phillips,rowan,whitea
FTCI no Jan 06 2012 04:36PM Jim Irby Fast two-color interferometer irby
G-Side Ratiomatic yes Dec 02 2011 12:24PM (toland) Brian LaBombard G-side ratiomatic ionization gauge labombard,toland
Glow Discharge no Power supply unplugged and redtagged, HV cables removed Apr 14 2011 08:03AM (dekow) Jim Irby 1 kV, 5 A, glow discharge system dekow,dterry,irby
GPC yes Using new preamps. Nov 30 2011 07:51AM (hubbard) Amanda Hubbard ECE Polychromater hubbard
GPC2 yes Dewar cold. Nov 21 2011 09:55AM (hubbard) Amanda Hubbard ECE Polychromater hubbard
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 system is functional and taking data Dec 05 2011 02:42PM (marmar) Earl Marmar H/D Ratio marmar
HEAT yes Jan 09 2012 06:32AM (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 Installed and aligned. Will be available for Ti/Vr profiles after focusing tests and locked modes are taken. Dec 06 2011 08:21AM (ypodpaly) John Rice High Resolution X-Ray cgao,ldelgado,rice,ypodpaly
HXR yes 32 Channels operational,, no safety risk for in-vessel access Apr 14 2011 12:05PM (parker) Ron Parker Hard X-Ray Array faust,parker,schmidt
ICRF D-Antenna no secured Apr 14 2011 08:55AM (wukitch) Steve Wukitch D-port antenna wukitch,ylin
ICRF E-Antenna no secured Apr 14 2011 08:55AM (wukitch) Steve Wukitch E-port antenna wukitch,ylin
ICRF J-Antenna no secured Apr 14 2011 08:56AM (wukitch) Steve Wukitch J-port antenna wukitch,ylin
Impurity Spectroscopy yes Being upgraded with better optics and new spectrographs. Dan Miller has primary responsibility. Apr 19 2011 11:46AM (blip) Bruce Lipshultz Measurement of recycling light and impurity source rates at multiple surfaces around the tokamak blip,miller
Laser Blow-Off yes Operational and tested Jan 06 2012 03:50PM (g) Martin Greenwald Impurity Injection System g,nthoward
Lower Hybrid no LH HV Breaker Opened and Tagged, TPS Upgrade Underway Nov 10 2011 03:51PM (dterry) Ron Parker Lower Hybrid dterry,parker,wallaceg
Lower Hybrid Reflectometer no off Apr 15 2011 08:24AM (dominguez) Arturo Dominguez Lower Hybrid Reflectometer dominguez,marmar,parker,sgbaek
LoWEUS yes LoWEUS viewing the 10-30 nm region, spectral brightness vs. lambda and time are being stored in tree. Jan 23 2012 12:03PM (mlreinke) Matthew L. Reinke Long Wavelength Extreme Ultraviolet Spectrometer markchil,mlreinke
LPI no Beam line removed May 30 2008 02:09PM (bose) Earl Marmar Lithium Pellet Injector bose,marmar
Ly-alpha yes Midplane Lyman-a and LEDGE-LY working normally. New B-PORT Lyman (BPLY) still being debugged. Jan 23 2012 12:04PM (mlreinke) Matt Reinke Lyman alpha cameras faustian,labombard,mlreinke
Magnetics yes Dec 01 2011 11:51AM (g) Robert Granetz Bp coils and flux loops for equilibrium control granetz,wolfe
McPherson no **vacuum system problem*** McPherson viewing the 10-14 nm region for molybdenum monitoring. It's days are numbered as LoWEUS has demonstrated superiority. Jan 31 2012 08:15AM (mlreinke) Jim Terry VUV Spectrometer markchil,mlreinke,terry
Michelson yes Front end at 4.5e-8 T. Reduced speed for initial operation. Nov 30 2011 07:51AM (hubbard) Amanda Hubbard ECE Te Profiles hubbard,schmidt
MKS yes Dec 02 2011 12:27PM (toland) Brian LaBombard Baratron pressure gauges labombard,toland
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 1/3/2011: push-pull mechanism broken. MSE inoperative Jan 03 2012 11:47AM (sscott) Steve Scott Motional Stark Effect jinseok,sscott
Neutrons yes High voltage is on. We're ready for plasma. Nov 21 2011 12:58PM (fiore) Catherine Fiore Neutron Detectors fiore
Neuts and Hards yes All detectors Powered On --- Waiting for neutrons for calibration Nov 22 2011 01:05PM (irby) Jim Irby X-Ray/Neutron Detectors at K-Hor irby
NINJA yes C-bottom and new F-bottom system ready. Dec 02 2011 12:28PM (toland) Brian LaBombard NINJA gas puff labombard,terry,toland
PCI yes Operational. Nov 30 2011 12:45PM (ntsujii) Miklos Porkolab Phase Contrast Imaging emd,ennever,ntsujii,porkolab
Penning Gauges yes Operational. High voltage comes on during INIT and off at RECOOL. Dec 09 2011 09:48AM (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 yes 3 chords operational but with high noise level Jan 06 2012 04:22PM (irby) Jim Irby C-Mod Polarimeter irby
Power - Alternator Air Switch yes Jan 09 2012 06:33AM (dekow) Gary Dekow feeds all the other supplies cochran,dekow,dterry,irby
Power - PEI yes Jan 09 2012 06:33AM (dekow) Gary Dekow PEI System cochran,dekow,dterry,irby
Power - TMX yes Jan 09 2012 06:33AM (dekow) Gary Dekow Ef2s,. EFCs and A-Coils byford,cochran,dekow,dterry,irby
Power Systems yes Jan 09 2012 06:33AM (dekow) Jim Irby C-Mod Magnet Supplies byford,cochran,dekow,dterry,irby
Probe Array - ISD yes Operational, except for probe #1 (open circuit) and probe #16 (not installed). Dec 09 2011 09:50AM (labombard) Brian Labombard Inner Lower Divertor Probe Array labombard
Probe Array - LH yes Operational, except for bottom-D probe (open circuit). Dec 09 2011 09:52AM (labombard) Brian LaBombard Lower Hybrid Probe Array labombard
Probe Array - OSD yes F-divertor ok. J-divertor ok, except for JDIV_06 which is shorted out. Dec 09 2011 09:54AM (labombard) Brian LaBombard Outer Lower Divertor Probe Array (F and J) labombard
Probe Array - UDIV yes Operational except for probes #4, 5 and 13 (open) Dec 09 2011 09:56AM (labombard) Brian LaBombard Upper Divertor Probe Array labombard
Reflectometer yes As of 1120105xxx, all channels are connected Jan 05 2012 09:14AM (dominguez) Earl Marmar Reflectometer dominguez,marmar
Scanning Probe - ASP yes Ion Sensitive Probe head installed. Testing in piggy-back mode. Dec 20 2011 12:33PM (labombard) Brian LaBombard A-Port Scanning Probe labombard
Scanning Probe - FSP yes Operational. Dec 09 2011 09:57AM (labombard) Brian LaBombard F-Port Scanning Probe labombard
Scanning Probe - WASP yes A-port WASP is operational. K-port WASP is dead (all probes melted together). Dec 09 2011 09:58AM (labombard) Brian LaBombard Inner Wall Scanning Probe labombard,nsmick
Shoelace Antenna yes Fixed frequency operation available (100kHz) at moderate power (< 0.5kW). Otherwise in receiver mode. Jan 11 2012 11:50AM (labombard) Brian LaBombard High-k active MHD antenna, for QCM, WCM studies golfit,labombard
SOL reflectometer yes c-port waveguides operational, h-port waveguides are not. Nov 29 2011 12:04PM (cornwall) Cornwall Lau SOL reflectometer cornwall,wukitch,ylin
Sparker yes New Type II sparker replaced Type I on 11/17/2011 Nov 23 2011 08:53AM (irby) Jim Irby Field Emission Preionization for C-Mod dekow,irby,parkin
Surface Science Station no SSS is up to air, no safety issues Apr 14 2011 12:06PM (ochoukov) Bruce Lipschultz Radially scanning probe located on K-port blip,ochoukov
TCI yes TCI Operational. Density feedback operational. Nov 10 2011 11:47AM (irby) Jim Irby Two-Color Interferometer irby,murray
TS - Core yes Operating with two 50Hz lasers, precise density calibration still required. Feb 03 2012 04:04AM (jwhughes) Jerry Hughes Core Thomson scattering jrwalk,jwhughes,yma
TS - Edge yes System taking data. Requires calibration. Feb 03 2012 04:05AM (jwhughes) Jerry Hughes Millimeter resolution edge Thomson scattering jrwalk,jwhughes,yma
Vispec no 350 and 670 nm, 4 spatial channels Nov 28 2007 09:58AM (agraf) Alex Graf Visible Spectrometer agraf
XEUS yes XEUS viewing the 1-6 nm region, spectral brightness vs. lambda and time are being stored in tree. Jan 23 2012 12:13PM (mlreinke) Matt Reinke X-ray Extended Ultraviolet Spectrometer markchil,mlreinke
XTOMO yes ARRAY1->4 working normally, ARRAY5 (new core view) working but spatial calibration issues not yet resolved Jan 23 2012 12:13PM (mlreinke) Robert Granetz X-Ray Tomography faustian,granetz,mlreinke

Physics Operator Comments
Feb 17 2012 09:26:29:957AM	1120217001	Jim Irby	loaded from 1111208013 open tree done nl04 request 0.40e20/m^2 150 kA TF 800 kA Ip pg4 15 ms pg3 prepuff starting at -20 ms plasma into rampdown
Feb 17 2012 09:33:03:360AM	1120217002	Jim Irby	changes -------------------------------- started TF rampdown at 1.5 s got rid of TF backporch forgot to load! results -------------------------------- plasma into rampdown
Feb 17 2012 09:59:03:200AM	1120217002	Jim Irby	changes -------------------------------- loaded TF change put negative slope on RXL from .6 to 1.5 s with delta of 0.01 m dropped density request to 3.5e19 early with slow ramp to 4.0e19 late loaded results -------------------------------- plasma into rampdown
Feb 17 2012 10:14:21:340AM	1120217004	Jim Irby	changes -------------------------------- Ip rampdown made faster Fizzle from 2.1 to 1.8 s early density request dropped a little more and kept flat at 3.5e19/m^2 ZXL excursion reduced by 0.005 m loaded results -------------------------------- no power shot --- check BTOR signal
Feb 17 2012 11:00:38:423AM	1120217005	Jim Irby	changes -------------------------------- TF only PLC test at 50 kA ---- check CPCI results -------------------------------- still have a problem with the magnetics CPCI
Feb 17 2012 11:15:31:580AM	1120217006	Jim Irby	changes -------------------------------- another test shot --- 50 kA TF PLC results -------------------------------- looks like the CPCI worked this time
Feb 17 2012 11:28:18:663AM	1120217007	Jim Irby	changes -------------------------------- no dpcs changes try for plasma results -------------------------------- plasma into rampdown
Feb 17 2012 11:39:25:697AM	1120217008	Jim Irby	changes -------------------------------- nl04 prop gain from 2 to 3 nl04 integral gain to 0 density to 5e19/m^2 early then 4.5e19/m^2 late loaded --- open tree done results -------------------------------- plasma into rampdown --- density control much better
Feb 17 2012 12:07:08:147PM	1120217009	Jim Irby	changes -------------------------------- no changes results -------------------------------- plasma into rampdown
Feb 17 2012 12:11:53:197PM	1120217010	Jim Irby	changes -------------------------------- no dpcs changes results -------------------------------- plasma into rampdown ---
Feb 17 2012 12:23:24:113PM	1120217011	Jim Irby	changes -------------------------------- repeat results -------------------------------- plasma into rampdown
Feb 17 2012 12:40:27:477PM	1120217012	Jim Irby	changes -------------------------------- increased RCUR by 0.0025 m from 1.25 s to 1.5 s nl04 request from 4.5 to 6.0e19 /m^2 loaded --- open tree done results -------------------------------- plasma into rampdown --- density a little low
Feb 17 2012 12:55:29:083PM	1120217013	Jim Irby	changes -------------------------------- pg4 prepuff from 15 to 18 ms nl04 request from 6 to 6.2e19/m^2 open tree done results -------------------------------- plasma into rampdown --- a little better startup --- higher density
Feb 17 2012 01:10:43:747PM	1120217014	Jim Irby	changes -------------------------------- nl04 request from 6.2 to 6.5e19/m^2 pg3 prepuff second point from 30 to 40 V open tree done results -------------------------------- plasma into rampdown --- hards are gone
Feb 17 2012 01:38:19:037PM	1120217015	Jim Irby	changes -------------------------------- nl04 request from 6.5 to 8.5e19/m^2 OTD results -------------------------------- plasma into rampdown
Feb 17 2012 01:49:37:530PM	1120217016	Jim Irby	changes -------------------------------- no changes results -------------------------------- delayed shot a few minutes ---- leak with m28 up to 4.8e-8 Torr (trip 4e-8). m40 up to 1.4e-9 Torr (trip at 2.0e-9). big board RGA display worked... plasma into rampdown ---- hards up a little
Feb 17 2012 02:12:21:277PM	1120217017	Jim Irby	changes -------------------------------- jog outward from 1.25 to 1.5 s removed per LH request nl04 request from 8.5 to 10.5e19/m^2 OTD results -------------------------------- plasma into rampdown
Feb 17 2012 02:18:52:260PM	1120217018	Jim Irby	changes -------------------------------- nl04 request to 12e19/m^2 by 0.5 s with ramp down to 10.5e19/m^2 by 1.5 s otd results -------------------------------- plasma into rampdown --- density nice and flat now
Feb 17 2012 02:38:47:190PM	1120217019	Jim Irby	changes -------------------------------- repeat results -------------------------------- plasma into rampdown
Feb 17 2012 02:46:05:097PM	1120217020	Jim Irby	changes -------------------------------- nl04 request to 1.25e20/m^2 (rampdown from 1.4e20 early) otd results -------------------------------- RGA m28 limit of 4e-8 Torr exceeded again shortly after last discharge m28 2.7e-8 Torr just before dicharge plasma into rampdown --- hards very low
Feb 17 2012 03:06:56:640PM	1120217021	Jim Irby	changes -------------------------------- nl04 request increased to 1.6e20/m^2 early otd results -------------------------------- m28 up again --- cooling to 3 psi for a while m28 at 3.2e-8 Torr before shot plasma for 1.44 s --- 1.4e20/m^2 at 1.5 s
Feb 17 2012 03:28:50:523PM	1120217022	Jim Irby	changes -------------------------------- nl04 request: prop gain to 3.5, request 1.25e20/m^2 flat otd results -------------------------------- m28 4.3e-8 Torr before shot plasma into rampdown --- density flat but too low
Feb 17 2012 03:48:17:527PM	1120217023	Jim Irby	changes -------------------------------- nl04 request to 1.45e20/m^2 early otd results -------------------------------- Tommy started purging H-Hor inner seal with argon. Clear that this is our problem. We will try to leave it purged. m40 up to 4e-7 Torr, but m28 is 6.3e-9 Torr. fizzle ---- argon?
Feb 17 2012 04:01:17:070PM	1120217024	Jim Irby	changes -------------------------------- pg4 puff from 18 to 17 ms otd results -------------------------------- m40/m28 1.7e-7/6.2e-9 fizzle
Feb 17 2012 04:14:23:460PM	1120217025	Jim Irby	changes -------------------------------- no changes results -------------------------------- m40/m28 1.1e-7/1.3e-8 plasma into rampdown --- density still ramping up
Feb 17 2012 04:36:05:917PM	1120217026	Jim Irby	changes -------------------------------- loaded from 1120217013 removed rcur outward jog otd results -------------------------------- m40/m28 6.9e-8/7.2e-9 plasma into rampdown
Feb 17 2012 04:49:30:977PM	1120217027	Jim Irby	changes -------------------------------- nl04 request to 7.2e19/m^2 otd results -------------------------------- m40/m28 6.9e-8/6.8e-9 plasma into rampdown
Feb 17 2012 05:12:01:197PM	1120217028	Jim Irby	changes -------------------------------- nl04 request to 5.2e19/m^2 otd results -------------------------------- m40 went to 1.5e-7 Torr before we stopped cooling waited several minutes to get level back down m40/m28 7.9e-8/6.8e-9 plasma into rampdown

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	09:13:44:920AM	Plasma	Ok
2	09:27:54:533AM	Plasma	Ok
3	09:45:53:753AM	Plasma	Ok
4	10:05:14:370AM	Plasma	Bad	No power shot
5	10:50:32:273AM	Test	Ok	TF ran
6	11:10:25:470AM	Test	Ok	TF ran okay
7	11:21:14:827AM	Plasma	Ok
8	11:35:13:037AM	Plasma	Ok
9	11:50:47:810AM	Plasma	Ok
10	12:06:56:930PM	Plasma	Ok
11	12:20:36:750PM	Plasma	Ok
12	12:34:19:597PM	Plasma	Ok
13	12:50:33:833PM	Plasma	Ok
14	01:06:45:573PM	Plasma	Ok
15	01:22:57:957PM	Plasma	Ok
16	01:42:48:043PM	Plasma	Ok
17	01:57:35:867PM	Plasma	Ok
18	02:13:44:807PM	Plasma	Ok
19	02:28:23:423PM	Plasma	Ok
20	02:43:26:140PM	Plasma	Ok
21	03:01:37:447PM	Plasma	Ok
22	03:18:41:850PM	Plasma	Ok
23	03:43:09:283PM	Plasma	Ok
24	03:56:07:213PM	Plasma	Ok
25	04:09:07:243PM	Plasma	Ok
26	04:29:40:430PM	Plasma	Ok
27	04:46:10:183PM	Plasma	Ok
28	05:09:43:030PM	Plasma	Ok