Alcator C-Mod Run 1071207 Information

Miniproposals

Miniproposal: 473

Date Filed: 3/9/2007

Title: Lower Hybrid System Check-out and Initial operation

First Author: J. Randall Wilson

Session Leader: Greg Wallace (shots 1-27)

Operators
Session leader(s):	Greg Wallace
Physics operator(s):	Ron Parker
Engineering operator(s):	Bill Parkin,Gary Dekow

Engineering Operator Run Comment
MP#473 LH check out and initial operation

Session Leader Plans

Entered: Dec 6 2007 03:03:42:947PM

Author: Greg Wallace

Session leader plan for 1071207
MP#473: LH check-out and initial operation
SL: G. Wallace
PO: R. Parker

Plasma setup:
Start with 1071205026 and go from there. Set Ip~750kA,
nl_04~0.8e20, outer gap~1cm.

LH setup:
Set launcher to 1.5mm behind LH limiter. Phase shifters set to 90 deg current
drive direction.

1) Enable CPS and start with short, low power pulses at 40kV beam voltage. 3 x
25ms pulses at 50% duty cycle (12.5 on, 12.5 off), 20kW per klystron. Start
with 90 degree phasing for all pulses. Vary nl_04 and/or outer gap to verify
that the CPS is operating correctly. Repeat at 60 and 120 degree phasing. (May
require cell acces to set CPS trip levels.)

2) Increase pulse length to 500ms, single phase during each shot. 60, 90, 120
degree phasing, 20kW per klystron.

3) Increase power in 5kW (per klystron) incriments under good coupling
conditions. If shot does not run clean, go back to previous lower power level
for several shots before increasing again.

Physics Operators Plans

Entered: Dec 6 2007 05:43:21:130PM

Author: Ron Parker

Engineering setup for Friday 07 Dec 2007

MP#473: LH check-out and initial operation
SL: G. Wallace
PO: R. Parker

ECDC overnight in D2 and bake at 60 C. Stop ECDC by 7:00 am.

Run will start at 09:00 and end at 17:00.

Power systems as on 1071204027

A-coil configuration: +Dtop -Dbot -Jtop +Jbot; Enabled (standard
configuration)

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)
NINJA DISABLED

Enable the following gate valves and shutters, assuming no vacuum problems:
ECE, VUV, Z-bolo (Do not enable DNB gate valve.)

Torvac setup: gate valves open

Specific diagnostics: standard set

-------------------------------------------------------------------------------
ICRF Setup: Turned off for entire run

LH Setup: Set launcher to 1.5mm behind LH limiter. Phase shifters set to 90 deg current drive direction.

DNB: no

Cryopump: no
-------------------------------------------------------------------------------
Run plan: Start with 1071205026 and go from there. Set Ip~750kA,
nl_04~0.8e20, outer gap~1cm.

Session Leader Summaries

Entered: Dec 7 2007 05:09:28:903PM

Author: Greg Wallace

Session Leader Summary for 1071207:

This was the first run day of the 2008 campaign for the lower hybrid
system. The goal of this run day was to make sure the LH system was still
operational and increase power slowly to the maximum level without
damaging the waveguides.

After accidentally firing at t=0 on the first shot, the LH system ran
smoothly for the rest of the day. The power was increased slowly shot to
shot, eventually working up to just over 700kW (135 kW per klystron) on
shot 21. This is comparable to the maximum power level achieved during
the 07 campaign, with any operation above 500kW troublesome during the 07
campaign. The last 25ms of the LH pulse on shot 21 tripped out due to an
arc in the jungle gym between the Magic-T and the Pant Leg. This was the
only arc all day and burned for less than 0.5ms.

A bad capacitor in the commutator cap bank caused us to stop operation for
two hours after shot 21.

Shot 24 (the next shot after the cap bank was fixed) had many arcs despite
decreasing power slightly from 21. The arcing appeared during the ramp at
~300kW level.

After this, we went back to the 50kW per klystron level, which ran clean.
The next shot at 60kW per klystron also ran clean. A final shot at 70kW
per klystron ran clean as well.

Overall, performance today was surprisingly good. We had several good
shots in a row with greater than 500kW net, which was essentially the
limit of reliable operation during the 07 run campaign. After the arc at
700+kW, peformance appeared to be greatly reduced although the technique
of drastically reducing power and slowly raising it seemed to work until
time ran out.

Physics Operator Summaries

Entered: Dec 7 2007 05:19:59:707PM

Author: Ron Parker

The machine performed extremely well today. The programmed shot (800 kA, 5.4T, nl_04~0.6e20 m-2, was repeated all day as a target for conditioning the LH antenna/system. Every shot was a full length plasma with the exception of shot
23 which was the first shot after a ~1.5 hour shutdown, and one subsequent power test. The shutdown was needed to replace a capacitor in the OH1 commutation bank, which failed during shot 21.

The LH system also performed extremely well, with the power coming quickly up to 700 kW on shot 21, although on that shot it did not quite make full length before tripping. On the next shot, the LH system tripped on the rampup at ~325 kW. After increasing power slowly on the next 3 shots, the power was brought back to a steady 350 kW with no dropouts.

Scorecard: 26 plasma attempts, one fizzle, the rest (25) full length shots.

Entered: Dec 7 2007 05:20:22:160PM

Author: Ron Parker

Shot 27 ran full length.

Session Leader Comments

Dec 7 2007 09:19:00:177AM 1071207001 Greg Wallace First shot with LH of the 08 campaign. CPS enabled. 3x25ms pulses at 50% duty cycle (12.5 on, 12.5 off), 20kW per klystron.

LH accidentally fired at t=0. First of 3 pulses tripped but ran clean after that. Density at grill looks perfect during flat top.

Next shot will move to t=700ms.

Phasing off on klystrons 2-6, probably due to temperature drift. Atma will fix for next shot.

Dec 7 2007 09:39:04:730AM 1071207002 Greg Wallace CPS enabled. 3x25ms pulses at 50% duty cycle (12.5 on, 12.5 off), 20kW per klystron, 90 degree CD phasing. Shot ran clean at 700ms as desired. Phasing on #2 and #4 are off by ~10 degrees.

Next shot will change to 60 degree phasing.

Dec 7 2007 09:50:39:253AM 1071207003 Greg Wallace CPS enabled. 3x25ms pulses at 50% duty cycle (12.5 on, 12.5 off), 20kW per klystron, 60 degree CD phasing. Shot ran clean through all pulses with decent coupling.

Next shot will change to 120 degree phasing.

Dec 7 2007 10:02:41:990AM 1071207004 Greg Wallace CPS enabled. 3x25ms pulses at 50% duty cycle (12.5 on, 12.5 off), 20kW per klystron, 120 degree CD phasing. Shot ran clean through all pulses with decent coupling.

Next shot will be same power level, 90 degrees, single 500ms pulse starting at 700ms.

Dec 7 2007 10:16:29:980AM 1071207005 Greg Wallace 500ms pulse starting at 700ms. Ran clean, good coupling. Everything looks ready to increase power. Next shot will be at 30kW per klystron.

Dec 7 2007 10:32:38:987AM 1071207006 Greg Wallace Shot ran clean at 30kW per klystron. Next shot will ramp from 30-40 kW per klystron.

Dec 7 2007 10:48:14:617AM 1071207007 Greg Wallace Shot ran clean. Next shot will increase flat top to 50 kW per klystron.

Dec 7 2007 11:10:25:190AM 1071207008 Greg Wallace Shot ran clean at 50kW per klystron during flat top. Next shot will increase flat top to 60kW per klystron and increase ramp time to 100ms.

Dec 7 2007 11:24:33:070AM 1071207009 Greg Wallace Shot ran clean at 60kW during the flat top. Next shot will increase flat top to 70kW per klystron and increase start of ramp to 40kW per klystron.

Dec 7 2007 11:40:07:827AM 1071207010 Greg Wallace Another clean shot. Increasing power again to 80kW per klystron during flat top. Some noticable signs of current drive on loop voltage, HXR, and ECE.

Dec 7 2007 11:55:59:050AM 1071207011 Greg Wallace Shot ran clean again at 80kW per klystron during flat top. Next shot will increase ramp to 200ms and power to 90kW per klystron during flat top. Signs of current drive are starting to appear....

Dec 7 2007 12:07:48:587PM 1071207012 Greg Wallace Another clean shot at 475 kW net, 90 kW per klystron! We have maxed out the calibration at 40kV so now we need to go to 50kV beam voltage. Next shot will be at 100kW per klystron.

Dec 7 2007 12:26:58:263PM 1071207013 Greg Wallace Still clean. nl_04 increases from 6 to 7 during the LH pulse. Next shot will repeat the same plasma and LH power to see if outgassing from the LH launcher is reduced.

Dec 7 2007 12:39:37:613PM 1071207014 Greg Wallace Density excursion seems less steady during LH as compared to shot 13. Will repeat at this power level one more time.

Dec 7 2007 12:49:16:540PM 1071207015 Greg Wallace Density rises to just over 7e19 on nl_04 again, but starting from a bit higher density. Next shot will increase power in flat top to 110kW per klystron.

Dec 7 2007 01:07:08:640PM 1071207016 Greg Wallace All clear at 110kW. Reflected power on column 23 is pretty high, ~8kW on RINT12. Density still rising during LH pulse.

Next shot will increase to 115kW per klystron.

Dec 7 2007 01:18:25:723PM 1071207017 Greg Wallace All looks good at 115kW per klystron. Next shot 120kW.

Dec 7 2007 01:48:14:140PM 1071207018 Greg Wallace Clean running at 120kW per klystron. Increase to 125kW per klystron for next shot.

Dec 7 2007 01:47:32:500PM 1071207019 Greg Wallace Clean running at 125kW per klystron. Increase to 130kW per klystron for next shot.

Dec 7 2007 02:01:33:050PM 1071207020 Greg Wallace Still going strong at 130kW per klystron. Going up to 135kW for the next shot.

Dec 7 2007 02:20:55:997PM 1071207021 Greg Wallace This shot was at 135kW per klystron. Looks like an arc in the jungle gym between the Magic-T and the Pant Leg split on column 3. Arc only lasted for less than 0.5ms. Next shot will decrease power back to 130kW per klystron.

Dec 7 2007 04:39:26:987PM 1071207024 Greg Wallace Much arcing during the shot, even before reaching flat top of 130kW per klystron. The short arc during shot 21 seems to have changed something in the jungle gym on column 3. The arc started in the same place as in shot 21 (between the Magic-T and the Pant Leg) then moved up above the pant leg on later trips. Next shot will decrease power level back down to 50kW per klystron in the flat top.

Dec 7 2007 04:45:40:287PM 1071207025 Greg Wallace Clean pulse at 50kW per klystron. Next shot will be 60kW per klystron.

Dec 7 2007 04:56:26:557PM 1071207026 Greg Wallace Shot ran clean at 60kW per klystron. Next shot will be 70kW per klystron.

Dec 7 2007 05:09:04:950PM 1071207027 Greg Wallace Final shot at 70kW per klystron ran clean. After drastically reducing the power we seem to be able to work it up again.

Physics Operator Comments

Dec 7 2007 10:00:36:693AM 1071207001 Ron Parker Shot 1 ran as programmed, full length.

LH pulses were early.

Dec 7 2007 10:01:28:397AM 1071207002 Ron Parker
Shot 2 was a repeat of shot 1.

Dec 7 2007 10:02:10:380AM 1071207003 Ron Parker Shot 3 again repeated. Still full length, no changes.

Dec 7 2007 09:59:54:303AM 1071207004 Ron Parker Shot 4 ran well, very repeatable.

Dec 7 2007 10:28:04:030AM 1071207005 Ron Parker Shot 5 repeated. LH pulse now extended.

Dec 7 2007 10:27:29:500AM 1071207006 Ron Parker Shot 6 ran well, still the same shot that we started the run with.

Dec 7 2007 10:45:57:070AM 1071207007 Ron Parker Shot 7 ran well, LH power up to 220 kW ~0.5 s.

Dec 7 2007 11:13:29:720AM 1071207008 Ron Parker Shots continue to roll. LH net pwr approaching 300 kW.

Next: lower programmed density from 7.5 to 6.5e19 cm-2.

Dec 7 2007 11:27:56:773AM 1071207009 Ron Parker Shot 9 ran well, density slightly lower (nl_04~0.7).

Dec 7 2007 12:06:22:430PM 1071207012 Ron Parker Shots keep reproducing, LH power up to nearly 1 MW forward, 0.5 MW net.

Dec 7 2007 12:25:07:140PM 1071207013 Ron Parker Shot 13 ran well, plasma density is increasing during LH pulse, evidence of outgassing from LH antenna?

Dec 7 2007 12:48:13:397PM 1071207014 Ron Parker Shot 14 ran well, density rises fron 6 to 7e19 cm-2 during LH pulse.

Dec 7 2007 12:46:52:257PM 1071207015 Ron Parker Shot 15 ran well, density still rises during LH pulse.

Dec 7 2007 01:25:48:693PM 1071207015 Ron Parker Shot 15 ran well.

Dec 7 2007 01:25:33:787PM 1071207016 Ron Parker Shots continue to reproduce.

Dec 7 2007 01:24:36:117PM 1071207017 Ron Parker Shot 17 ran fine, LH up to 600 kW.

Dec 7 2007 01:34:14:197PM 1071207018 Ron Parker Shot 18 ran well, LH power teasing up.

Dec 7 2007 02:08:15:430PM 1071207019 Ron Parker Shot 19 ran well, LH reflection showed a a small glitch.

Dec 7 2007 02:08:53:193PM 1071207020 Ron Parker Shot 20 ran well, LH pwr ~ 670 kW.

Dec 7 2007 02:15:26:603PM 1071207021 Ron Parker Shot ran, but small bang at end of shot heard in CTRL Rm.

LH pwr up to 700 kW, but trip at end of pulse (1.17 s.)

Dec 7 2007 03:46:07:030PM 1071207021 Ron Parker The problem associated with the bang in the power room was a bad capacitor in the OH1 commutation bank. After > 1 hour delay, the capacitor bank has been repaired and the run will resume. First shot will be a power test.

Dec 7 2007 04:14:10:870PM 1071207022 Ron Parker This was a no power shot.

Dec 7 2007 04:13:09:320PM 1071207023 Ron Parker Shot fizzled, ruining th string of 21 straight full length discharges.

Dec 7 2007 04:37:44:737PM 1071207024 Ron Parker Shot 24 ran, but now LH is intermittent, breaking down first on the rampup at ~350 kW (net).

Dec 7 2007 04:44:58:957PM 1071207025 Ron Parker Shot ran well, LH stayed on with dropout and reached ~260 kW.

Dec 7 2007 04:57:19:510PM 1071207026 Ron Parker Shot 26 ran full length, as did LH with ~300 kW flat top.

Engineering Operator Comments

Shot Time Type Status Comment

1 09:01:19:030AM Plasma Ok

2 09:30:05:400AM Plasma Ok

3 09:42:51:607AM Plasma Ok

4 09:56:14:927AM Plasma Ok

5 10:09:38:667AM Plasma Ok

6 10:24:40:467AM Plasma Ok

7 10:40:11:333AM Plasma Ok

8 11:03:57:920AM Plasma Ok

9 11:17:09:037AM Plasma Ok

10 11:30:46:930AM Plasma Ok

11 11:43:49:013AM Plasma Ok

12 11:57:58:550AM Plasma Ok

13 12:16:59:870PM Plasma Ok

14 12:30:08:093PM Plasma Ok

15 12:43:51:570PM Plasma Ok

16 12:57:11:543PM Plasma Ok

17 01:11:58:970PM Plasma Ok

18 01:26:53:617PM Plasma Ok

19 01:40:42:810PM Plasma Ok

20 01:53:54:283PM Plasma Ok

21 02:08:18:820PM Plasma Ok OH1 comm bank failed after commutation

22 03:54:23:157PM Test Ok

23 04:07:10:990PM Plasma Ok

24 04:24:03:590PM Plasma Ok

25 04:40:19:940PM Plasma Ok

26 04:52:47:820PM Plasma Ok

27 05:05:18:577PM Plasma Ok

System Availability

Dec 7 2007 09:00:56:670AM

System Available Comment Availability
Changed Owner Description Who Can
Change
Active MHD yes Fully operational Mar 28 2007 09:19PM (sears) Joe Snipes Active MHD Antenna sears,snipes
BES yes vertical array of six views at R ~ 87.3 cm, radial array of three views out to R ~ 89 cm, both at outboard midplane. Three discrete fiber views of beam at R ~ 70.0, 76.5 and 82.5 cm. Feb 06 2007 10:00AM (bravenec) Ron Bravenec Beam Emission Spectroscopy bravenec
Bolometers no Diode 2pi working fine, foil 2pi still in the same poor condition as last campaign. Midplane AXUV down, fixing problem with AXA. Midplane foils working fine, but need calibration. 2D bolometry is being digitized but need to debug and calibrate gains. Nov 29 2007 01:38PM (mlreinke) Matt Reinke Bolometers hutch,mlreinke
Boronization no First Boronization 5/9/07 Bottle has been removed from the cell Sep 14 2007 12:42PM (dekow) Jim Irby Boronization dekow,irby
CNPA no Jan 14 2007 02:06PM Ron Parker Compact Neutral Analyzer parker
Cryopump - Upper Divertor no LN2 manual valve is closed. LHe valve is closed and disconnected from PLC. Sep 14 2007 01:26PM (labombard) Brian LaBombard Upper Divertor Cryopump irby,labombard
CXRS yes The pedestal toroidal array was installed, spatially and absolutely calibrated. There are 10 chords intersect the beam at the major_R_range=[74.2:86.3]cm. Spatial resolution: 1.2 cm. The F-top poloidal array was installed and spatially calibrated. There are 19 chords intersect the beam at the major_R_range=[67.8:91.0]cm. Spatial resolution: 1.22 cm. Nov 27 2007 10:21AM (bespam) Bill Rowan Charge Exchange Spectroscopy bespam,blip,rachmcd,rowan
D Alpha yes \ha2_bright and \SPECTROSCOPY::TOP.VUV.VIS_SIGNALS:MCP_VIS_SIG1 are available Nov 26 2007 04:23PM (terry) Jim Terry Balmer Alpha Monitor irby,terry,wolfe
Dalsa yes optics repaired, camera re-installed, and view has been re-calibrated Nov 27 2007 09:54AM (marmar) Earl Marmar Visible Bremsstrahlung marmar
Disruption Mitigation no Nov 20 2007 10:47PM (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 Nov 20 2007 10:47PM (granetz) Robert Granetz Diagnostic Neutral Beam beals,granetz
FRC-ECE yes Chs 17-32 working - low freq. mixer being repaired Nov 26 2007 11:41AM (phillips) Perry Phillips Heterodyne ECE-32 channels phillips
G-Side Ratiomatic yes Gauge is operational and calibrated against G-side MKS on shot#1071127002 Nov 27 2007 01:25PM (labombard) Brian LaBombard G-side ratiomatic ionization gauge labombard,toland
GPC yes Detectors cooled 12/4. Signals on all but Chs 9. Recalibrated 12/4. Dec 05 2007 09:29AM (hubbard) Amanda Hubbard ECE Polychromater hubbard,schmidt
GPC2 yes Detectors cooled 12/5. Most channels operational. Dec 05 2007 09:30AM (hubbard) Amanda Hubbard ECE Polychromater hubbard,schmidt
GPI no Neither the Xpt-view nor the midplane-view camera is operational. Nov 26 2007 04:25PM (terry) Jim Terry Gas Puff Imaging terry,zweben
H/D yes Should be operational for the FY08 campaign Nov 27 2007 09:54AM (marmar) Earl Marmar H/D Ratio marmar
Hirex Jr yes Mar 06 2007 08:59AM (rice) John Rice High Resolution X-Ray ince,rice
Hirex Sr no Be Window has a leak and so the gate valve is closed Nov 23 2007 12:50PM (ince) John Rice High Resolution X-Ray ince,rice
HXR yes Something might be wrong with channel 26; all others working fine. Mar 23 2007 10:43AM (schmidt) Ron Parker Hard X-Ray Array parker,schmidt
ICRF D-Antenna no Coaxial line disconnected from the antenna Sep 14 2007 11:24AM (ylin) Steve Wukitch D-port antenna wukitch,ylin
ICRF E-Antenna no coaxial line disconnected from the antenna Sep 14 2007 11:24AM (ylin) Steve Wukitch E-port antenna wukitch,ylin
ICRF J-Antenna no Antenna is still connected. We will only do transmitter work after the lines are disconnected and capped. Sep 14 2007 11:26AM (ylin) Steve Wukitch J-port antenna wukitch,ylin
Lower Hybrid yes Body I Fault Circuits Repaired and tested. High power tests completed Dec 05 2007 06:40PM (dterry) Ron Parker Lower Hybrid dterry,parker
LPI no Oct 12 2007 12:41PM (bose) Earl Marmar Lithium Pellet Injector bose,marmar
Ly-alpha no Midplane and WB1-LY attached but need to be debugged Nov 20 2007 05:21PM (mlreinke) Matt Reinke Lyman alpha cameras labombard,mlreinke
McPherson yes Working fine. Nov 29 2007 01:36PM (mlreinke) Jim Terry VUV Spectrometer mlreinke,terry
Michelson yes Working, low speed to start out. Dec 04 2007 09:27AM (hubbard) Amanda Hubbard ECE Te Profiles hubbard,schmidt
MKS yes E-Top, E-Bottom, F-top (cryo), G-side, and B-bottom are operational. F-top gauge has a 'sniffer tube' to measure pressures in cryopump gas box. Mar 20 2007 06:42PM (g) Brian LaBombard Baratron pressure gauges labombard
MLP no Initial tests on the A-port scanning probe went well. We need to take care of some control glitches that caused some component failures. May 30 2007 08:01PM (labombard) Brian LaBombard Mirror Langmuir Probe Electronics System labombard
MSE no We are basically awaiting the DNB & its new aperture. MSE itself is OK. Two of 10 channels are dead. Nov 20 2007 08:26PM (sscott) Steve Scott Motional Stark Effect jinseok,sscott
Neutrons yes Voltage is on for the He3 bank. Voltage will be turned on for the global system at the first plasma attempts. Nov 26 2007 08:31AM (fiore) Catherine Fiore Neutron Detectors fiore
Neuts and Hards yes calibration unchanged from 2007 campaign Dec 04 2007 08:56PM (irby) Jim Irby X-Ray/Neutron Detector at K-Hor irby
NINJA yes All capillaries displayed by the NINJA_CONTROL GUI have been tested. Nov 26 2007 04:26PM (terry) Brian LaBombard NINJA gas puff labombard,terry
PCI no Both CO2 and HeNe Lasers are disabled----- safe for machine entry. Sep 14 2007 03:21PM (lianglin) Miklos Porkolab Phase Contrast Imaging edlund,lianglin,ntsujii,porkolab
Penning Gauges yes All gauges except B_DivL are operating Nov 27 2007 01:31PM (labombard) Brian LaBombard Penning Ionization Gauges labombard
Plasma TV yes WIDE1, WIDE2 (chan 33), DANT, JANT and DIV are operational. Nov 26 2007 04:27PM (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
Probe Array - ISD yes Operational Nov 27 2007 01:40PM (labombard) Brian Labombard Inner Lower Divertor Probe Array labombard
Probe Array - LH yes Operational Nov 27 2007 01:40PM (labombard) Brian LaBombard Lower Hybrid Probe Array labombard
Probe Array - OSD yes Operational Nov 27 2007 01:41PM (labombard) Brian LaBombard Outer Lower Divertor Probe Array labombard
Probe Array - UDIV yes Operational Nov 27 2007 01:41PM (labombard) Brian LaBombard Upper Divertor Probe Array labombard
Reflectometer no System off Sep 14 2007 02:46PM (dominguez) Earl Marmar Reflectometer dominguez,marmar
Scanning Probe - ASP yes Operational, but needs to be checked with plasma. Nov 27 2007 01:45PM (labombard) Brian LaBombard A-Port Scanning Probe labombard
Scanning Probe - FSP no Pneumatic air supply is still disconnected. Nov 27 2007 01:46PM (labombard) Brian LaBombard F-Port Scanning Probe labombard
Scanning Probe - WASP yes A- and K-port WASP electrodes have been replaced/tested. Nov 27 2007 01:44PM (labombard) Brian LaBombard Inner Wall Scanning Probe labombard,nsmick
TCI yes CO2 Laser is on --- initial alignment complete Nov 16 2007 01:23PM (irby) Jim Irby Two-Color Interferometer irby,murray
TS - Core no System is being reassembled following manned access. Availablity during pre-physics phase will be limited. Nov 26 2007 02:58PM (jwhughes) Jerry Hughes Core Thomson scattering jwhughes,yma
TS - Edge no System being reassembled following manned access. Availability will be limited during pre-physics portion of campaign. Nov 26 2007 02:59PM (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
XTOMO no Data acquisition upgraded before FY08. Still waiting on engineering network connection to run digitizers. Nov 27 2007 09:16AM (mlreinke) Bob Granetz X-Ray Tomography granetz,mlreinke

Session Leader Comments
Dec 7 2007 09:19:00:177AM	1071207001	Greg Wallace	First shot with LH of the 08 campaign. CPS enabled. 3x25ms pulses at 50% duty cycle (12.5 on, 12.5 off), 20kW per klystron. LH accidentally fired at t=0. First of 3 pulses tripped but ran clean after that. Density at grill looks perfect during flat top. Next shot will move to t=700ms. Phasing off on klystrons 2-6, probably due to temperature drift. Atma will fix for next shot.
Dec 7 2007 09:39:04:730AM	1071207002	Greg Wallace	CPS enabled. 3x25ms pulses at 50% duty cycle (12.5 on, 12.5 off), 20kW per klystron, 90 degree CD phasing. Shot ran clean at 700ms as desired. Phasing on #2 and #4 are off by ~10 degrees. Next shot will change to 60 degree phasing.
Dec 7 2007 09:50:39:253AM	1071207003	Greg Wallace	CPS enabled. 3x25ms pulses at 50% duty cycle (12.5 on, 12.5 off), 20kW per klystron, 60 degree CD phasing. Shot ran clean through all pulses with decent coupling. Next shot will change to 120 degree phasing.
Dec 7 2007 10:02:41:990AM	1071207004	Greg Wallace	CPS enabled. 3x25ms pulses at 50% duty cycle (12.5 on, 12.5 off), 20kW per klystron, 120 degree CD phasing. Shot ran clean through all pulses with decent coupling. Next shot will be same power level, 90 degrees, single 500ms pulse starting at 700ms.
Dec 7 2007 10:16:29:980AM	1071207005	Greg Wallace	500ms pulse starting at 700ms. Ran clean, good coupling. Everything looks ready to increase power. Next shot will be at 30kW per klystron.
Dec 7 2007 10:32:38:987AM	1071207006	Greg Wallace	Shot ran clean at 30kW per klystron. Next shot will ramp from 30-40 kW per klystron.
Dec 7 2007 10:48:14:617AM	1071207007	Greg Wallace	Shot ran clean. Next shot will increase flat top to 50 kW per klystron.
Dec 7 2007 11:10:25:190AM	1071207008	Greg Wallace	Shot ran clean at 50kW per klystron during flat top. Next shot will increase flat top to 60kW per klystron and increase ramp time to 100ms.
Dec 7 2007 11:24:33:070AM	1071207009	Greg Wallace	Shot ran clean at 60kW during the flat top. Next shot will increase flat top to 70kW per klystron and increase start of ramp to 40kW per klystron.
Dec 7 2007 11:40:07:827AM	1071207010	Greg Wallace	Another clean shot. Increasing power again to 80kW per klystron during flat top. Some noticable signs of current drive on loop voltage, HXR, and ECE.
Dec 7 2007 11:55:59:050AM	1071207011	Greg Wallace	Shot ran clean again at 80kW per klystron during flat top. Next shot will increase ramp to 200ms and power to 90kW per klystron during flat top. Signs of current drive are starting to appear....
Dec 7 2007 12:07:48:587PM	1071207012	Greg Wallace	Another clean shot at 475 kW net, 90 kW per klystron! We have maxed out the calibration at 40kV so now we need to go to 50kV beam voltage. Next shot will be at 100kW per klystron.
Dec 7 2007 12:26:58:263PM	1071207013	Greg Wallace	Still clean. nl_04 increases from 6 to 7 during the LH pulse. Next shot will repeat the same plasma and LH power to see if outgassing from the LH launcher is reduced.
Dec 7 2007 12:39:37:613PM	1071207014	Greg Wallace	Density excursion seems less steady during LH as compared to shot 13. Will repeat at this power level one more time.
Dec 7 2007 12:49:16:540PM	1071207015	Greg Wallace	Density rises to just over 7e19 on nl_04 again, but starting from a bit higher density. Next shot will increase power in flat top to 110kW per klystron.
Dec 7 2007 01:07:08:640PM	1071207016	Greg Wallace	All clear at 110kW. Reflected power on column 23 is pretty high, ~8kW on RINT12. Density still rising during LH pulse. Next shot will increase to 115kW per klystron.
Dec 7 2007 01:18:25:723PM	1071207017	Greg Wallace	All looks good at 115kW per klystron. Next shot 120kW.
Dec 7 2007 01:48:14:140PM	1071207018	Greg Wallace	Clean running at 120kW per klystron. Increase to 125kW per klystron for next shot.
Dec 7 2007 01:47:32:500PM	1071207019	Greg Wallace	Clean running at 125kW per klystron. Increase to 130kW per klystron for next shot.
Dec 7 2007 02:01:33:050PM	1071207020	Greg Wallace	Still going strong at 130kW per klystron. Going up to 135kW for the next shot.
Dec 7 2007 02:20:55:997PM	1071207021	Greg Wallace	This shot was at 135kW per klystron. Looks like an arc in the jungle gym between the Magic-T and the Pant Leg split on column 3. Arc only lasted for less than 0.5ms. Next shot will decrease power back to 130kW per klystron.
Dec 7 2007 04:39:26:987PM	1071207024	Greg Wallace	Much arcing during the shot, even before reaching flat top of 130kW per klystron. The short arc during shot 21 seems to have changed something in the jungle gym on column 3. The arc started in the same place as in shot 21 (between the Magic-T and the Pant Leg) then moved up above the pant leg on later trips. Next shot will decrease power level back down to 50kW per klystron in the flat top.
Dec 7 2007 04:45:40:287PM	1071207025	Greg Wallace	Clean pulse at 50kW per klystron. Next shot will be 60kW per klystron.
Dec 7 2007 04:56:26:557PM	1071207026	Greg Wallace	Shot ran clean at 60kW per klystron. Next shot will be 70kW per klystron.
Dec 7 2007 05:09:04:950PM	1071207027	Greg Wallace	Final shot at 70kW per klystron ran clean. After drastically reducing the power we seem to be able to work it up again.

Physics Operator Comments
Dec 7 2007 10:00:36:693AM	1071207001	Ron Parker	Shot 1 ran as programmed, full length. LH pulses were early.
Dec 7 2007 10:01:28:397AM	1071207002	Ron Parker	Shot 2 was a repeat of shot 1.
Dec 7 2007 10:02:10:380AM	1071207003	Ron Parker	Shot 3 again repeated. Still full length, no changes.
Dec 7 2007 09:59:54:303AM	1071207004	Ron Parker	Shot 4 ran well, very repeatable.
Dec 7 2007 10:28:04:030AM	1071207005	Ron Parker	Shot 5 repeated. LH pulse now extended.
Dec 7 2007 10:27:29:500AM	1071207006	Ron Parker	Shot 6 ran well, still the same shot that we started the run with.
Dec 7 2007 10:45:57:070AM	1071207007	Ron Parker	Shot 7 ran well, LH power up to 220 kW ~0.5 s.
Dec 7 2007 11:13:29:720AM	1071207008	Ron Parker	Shots continue to roll. LH net pwr approaching 300 kW. Next: lower programmed density from 7.5 to 6.5e19 cm-2.
Dec 7 2007 11:27:56:773AM	1071207009	Ron Parker	Shot 9 ran well, density slightly lower (nl_04~0.7).
Dec 7 2007 12:06:22:430PM	1071207012	Ron Parker	Shots keep reproducing, LH power up to nearly 1 MW forward, 0.5 MW net.
Dec 7 2007 12:25:07:140PM	1071207013	Ron Parker	Shot 13 ran well, plasma density is increasing during LH pulse, evidence of outgassing from LH antenna?
Dec 7 2007 12:48:13:397PM	1071207014	Ron Parker	Shot 14 ran well, density rises fron 6 to 7e19 cm-2 during LH pulse.
Dec 7 2007 12:46:52:257PM	1071207015	Ron Parker	Shot 15 ran well, density still rises during LH pulse.
Dec 7 2007 01:25:48:693PM	1071207015	Ron Parker	Shot 15 ran well.
Dec 7 2007 01:25:33:787PM	1071207016	Ron Parker	Shots continue to reproduce.
Dec 7 2007 01:24:36:117PM	1071207017	Ron Parker	Shot 17 ran fine, LH up to 600 kW.
Dec 7 2007 01:34:14:197PM	1071207018	Ron Parker	Shot 18 ran well, LH power teasing up.
Dec 7 2007 02:08:15:430PM	1071207019	Ron Parker	Shot 19 ran well, LH reflection showed a a small glitch.
Dec 7 2007 02:08:53:193PM	1071207020	Ron Parker	Shot 20 ran well, LH pwr ~ 670 kW.
Dec 7 2007 02:15:26:603PM	1071207021	Ron Parker	Shot ran, but small bang at end of shot heard in CTRL Rm. LH pwr up to 700 kW, but trip at end of pulse (1.17 s.)
Dec 7 2007 03:46:07:030PM	1071207021	Ron Parker	The problem associated with the bang in the power room was a bad capacitor in the OH1 commutation bank. After > 1 hour delay, the capacitor bank has been repaired and the run will resume. First shot will be a power test.
Dec 7 2007 04:14:10:870PM	1071207022	Ron Parker	This was a no power shot.
Dec 7 2007 04:13:09:320PM	1071207023	Ron Parker	Shot fizzled, ruining th string of 21 straight full length discharges.
Dec 7 2007 04:37:44:737PM	1071207024	Ron Parker	Shot 24 ran, but now LH is intermittent, breaking down first on the rampup at ~350 kW (net).
Dec 7 2007 04:44:58:957PM	1071207025	Ron Parker	Shot ran well, LH stayed on with dropout and reached ~260 kW.
Dec 7 2007 04:57:19:510PM	1071207026	Ron Parker	Shot 26 ran full length, as did LH with ~300 kW flat top.

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	09:01:19:030AM	Plasma	Ok
2	09:30:05:400AM	Plasma	Ok
3	09:42:51:607AM	Plasma	Ok
4	09:56:14:927AM	Plasma	Ok
5	10:09:38:667AM	Plasma	Ok
6	10:24:40:467AM	Plasma	Ok
7	10:40:11:333AM	Plasma	Ok
8	11:03:57:920AM	Plasma	Ok
9	11:17:09:037AM	Plasma	Ok
10	11:30:46:930AM	Plasma	Ok
11	11:43:49:013AM	Plasma	Ok
12	11:57:58:550AM	Plasma	Ok
13	12:16:59:870PM	Plasma	Ok
14	12:30:08:093PM	Plasma	Ok
15	12:43:51:570PM	Plasma	Ok
16	12:57:11:543PM	Plasma	Ok
17	01:11:58:970PM	Plasma	Ok
18	01:26:53:617PM	Plasma	Ok
19	01:40:42:810PM	Plasma	Ok
20	01:53:54:283PM	Plasma	Ok
21	02:08:18:820PM	Plasma	Ok	OH1 comm bank failed after commutation
22	03:54:23:157PM	Test	Ok
23	04:07:10:990PM	Plasma	Ok
24	04:24:03:590PM	Plasma	Ok
25	04:40:19:940PM	Plasma	Ok
26	04:52:47:820PM	Plasma	Ok
27	05:05:18:577PM	Plasma	Ok