| Miniproposals | ||||||||||
|
| Operators | |
| Session leader(s): | Anne White |
| Physics operator(s): | Robert Granetz |
| Engineering operator(s): | Gary Dekow,Thomas Toland,Ed Fitzgerald |
| Engineering Operator Run Comment |
| Undetermined at this time 0738 |
| Session Leader Plans |
| Entered: Jul 6 2012 09:06:11:447AM |
| Author: Anne White |
| Day 2 of MP 689
"Validation of gyrokinetic transport models across the ITG/TEM boundary in L-mode and I-mode plasmas" A. E. White, N. T. Howard, M. L. Reinke, M. Greenwald, et al. The motivation for this experiment today is to study changes in core turbulence and transport across the ITG/TEM boundary in RF heated plasmas. We wish to investigate how well turbulent-transport models can match simultaneously impurity particle transport and heat transport in ITG and TEM dominant plasmas. This is the second day of a dedicated JRT validation experiment, and today we will be gathering key fluctuation/transport data that we did not obtain on day1 -- LBO, CECE, and fast TCI. PCI is not available due to a shutter problem, so it is important to gather matched turbulence data with Fast TCI. The goal of the experiment today is to repeat as closely as possible several key discharges from 1120221, which we are currently using to validate gyrokinetic models of transport. The main part of the shot plan today will consist of an RF power scan, followed by a density scan, so that we can cross the ITG/TEM boundary with peaked rotation profiles (1120221012/1120221014) and also we can probe changes in rotation from peaked to hollow profiles as density is scanned (1120221011, 1120221012). We will also be attempting to fill in an intermediate power step (1120221016) with LBO data as well. The shot by shot run plan is below. One special request is for Contingency step 6 b): For physop plan, have 3.0 psi Ne put into H-bottom plenum, disabled for shot 001. Other than that, we wish to have standard set-up as on day 1120221. Cryo - yes GPC- yes TS - yes HIREX (set for LBO data) - yes Beam - NO NINJA - NO All fluctuation diagnostics. Run Plan for Day 2 of MP 689: Step 0 Clean up shots, post-boronization, low to high power RF (5-6 shots) First shot of day, load up shot 12 from 2/21 (USN, 1 MW), check things out. Second shot of day, plan to load shot 1120621010 (LSN, test H-mode, EDA-ish). Step 1 Locked mode calibration shot. Load entire locked mode shot (1120705005 or 006 from Thursday) for this. Step 2 Load shot 1120221012. This will be a repeat of low power (~1 MW, 0.8MA, BT = 5.4) ITG base case L-mode. Need to match RF power and density as closely as possible to reference shot. Repeat 1120221012, with 3-4 good LBO pulses. Compare actual parameters to target parameters, if agreement to within 5% then move to next step. (2-3 shots) Step 3 Load shot 1120221014. This will be a repeat of high power (~3.5 MW, 0.8MA, BT = 5.4) TEM base case L-mode. Need to match RF power and density as closely as possible. Repeat 1120221014, with 3-4 good LBO pulses. Compare actual parameters to target parameters, if agreement to within 5% then move to next step. (2-3 shots) Step 4 Load shot 1120221011. This will be a repeat of low power (~1 MW, 0.8MA, BT = 5.4) ITG base case L-mode, BUT at higher density to see hollowing of rotation profile. Need to match RF power and density as closely as possible. Repeat 1120221011, with 3-4 good LBO pulses. Compare actual parameters to target parameters, if agreement to within 5% then move to next step. (2-3 shots) Step 5 Load shot 1120221016. This will be a repeat of intermediate power (~2.5 MW, 0.8MA, BT = 5.4) ITG base case L-mode for RF scan LBO data. Need to match RF power and density as closely as possible. Repeat 1120221016, with 3-4 good LBO pulses. Compare actual parameters to target parameters, if agreement to within 5% then move to next step. (2-3 shots) Total = 18 good shots Contingency: If we make it through the primary run plan (above), then we move to one (or two?) of these three contingency options. These all support JRT 2012, support papers by Reinke, Howard, Sung, and support an APS invited talk by White. Step 6 a) CECE data scan If CECE is getting good data near r/a = 0.7-0.8 region of plasma, then repeat shot like 1120221011, but raise the current to move the q = 3/2 surface (rotation reversal location further out in radius. This way, CECE may measure turbulence changes closer to the rotation reversal. (1-2 shots) If CECE is not getting good data near r/a = 0.7-0.8, then do Bt scan and repeat shot pair like 11/12 and then like 12/14, to get CECE data. (4-6 shots) b) Zeff scan In 1 MW, peaked rotation L-mode plasmas, increases collisionality via Zeff to try and induce transition to hollow/flat rotation profile. (assume ICRF power from 0.5-1.5 seconds as per 2/21 target) 1) scan Zeff dynamically during ICRF pulse (1-3 shots) a) enable H-BOT from 0.8-0.9 seconds at 40 V, 1.05-1.10 at 40 V and 1.2-1.25 at 40 V. b) if rotation profile change is observed, move to (2) else repeat (1) increasing the voltage, puff lengths until radiation is saturated. 2) keep Zeff ~ constant at just below and just above demonstrated (2-3 shots) a) Using levels from (1) set initial 100 ms puff voltage to have Zeff just below threshold b) Using levels from (1) set initial 100 ms puff voltage to have Zeff just above threshold c) I-mode LBO data Depending on how well other steps progress, we might wish to make some I-mode plasmas and inject LBO. Use high power targets from 1120221 or raise current and density on good targets from today (4-5 shots) |
| Physics Operators Plans |
| Entered: Jul 5 2012 03:58:23:917PM |
| Author: Robert Granetz |
Engineering setup for Friday 2012/07/06
MP689 - Validation of gyrokinetic transport models across the ITG/TEM
boundary in L-mode and I-mode plasmas
Session leader: A. White
Physics operator: R. Granetz
Overnight boronization, but start with an hour of ECDC in D2 before
beginning the boronization.
Use the same parameters as on 1120621.
Follow up with 3 hours of ECDC in helium
Run will start at 09:00 and end at 17:00
Power systems as on: 1120221012 (0.8 MA, 5.4 T, 0.6e20 m-2, USN)
A-coil configuration: +Dtop -Dbot -Jtop +Jbot; Hybrid 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)
** fill H-bottom with 3 psi Ne Hybrid DISABLED (PG5) <--- ***
leave B-div as is Hybrid DISABLED (PG6)
leave H-div as is Hybrid DISABLED (PG7)
leave NINJA as is DISABLED
Enable the following gate valves and shutters, assuming no vacuum problems:
ECE, VUV, Z-bolo, HIREX-Sr, B-spectrometer GV, Xeus, LoWEUS
Torvac setup: keep gate valves open during pulse
Required diagnostics: GPC, TS, CECE, fast TCI, HIREX (set for Ca), all
fluctuation diagnostics
------------------------------------------------------------------------------
Boronization overnight: yes
ECDC: 1 hour in D2 before boronization
3 hours in He after boronization
Impurity injector: yes, with CaF2
ICRF: yes, D+E+J
LH: no
DNB: no (not allowed)
Cryopump: yes
------------------------------------------------------------------------------
Run plan: The goal is to repeat as closely as possible several key
discharges from 1120221, this time with key fluctuation data
being gathered. The main part of the shot plan will consist of
an RF power scan, followed by a density scan, so as to cross the
ITG/TEM boundary.
|
| Session Leader Summaries |
| Entered: Jul 6 2012 09:13:57:970PM |
| Author: Anne White |
| Run Summary 7-6-2012
MP 689 Day 2 "Validation of gyrokinetic transport models across the ITG/TEM boundary in L-mode and I-mode plasmas" THANK YOU!! Thank you to the entire C-Mod engineering team for making this run a success! R. Granetz: PO A. E. White: SL M. L. Reinke: rotation guru M. Greenwald: transport guru N. T. Howard: profile verification, ITG/TEM guru M. A. Chilenski: LBO S. Wukitch: RF S. G. Baek: reflectometer C. Sung: CECE J. Irby: FTCI W. Bergerson: Polarimeter J. Hughes: TS J. Rice & C. Gao: HIREX A. Hubbard: GPC A. Tronchin-James:limiter cameras R. Ochoukov: Surface Science Station and many others... The motivation for this experiment today is to study changes in core turbulence and transport across the ITG/TEM boundary in RF heated plasmas. This is the second day of a dedicated JRT validation experiment, and today we will be gathering key fluctuation/transport data that we did not obtain on day1 -- LBO, CECE, and fast TCI. The goal of the experiment today is to repeat as closely as possible several key discharges from 1120221, which we are currently using to validate gyrokinetic models of transport. The main part of the shot plan today will consist of an RF power scan, followed by a density scan, so that we can cross the ITG/TEM boundary with peaked rotation profiles and also we can probe changes in rotation from peaked to hollow profiles as density is scanned. We will also be attempting to fill in an intermediate power step with LBO data as well. We were able to complete the 5 step physics run plan, and also complete part of the contingency plan. Data were obtained with LBO, CECE, reflectometer and FTCI in discharges that were matched extremely well (ne, Te, rot, WMHD, neuts, etc�?�) to the target discharges from 1120221 run day. For the high power cases, which we ran later in the day, we did have to request 1 MW more RF than the target shot, as H/D was high today. Step 2/3: Repeat ITG and TEM cases, but with LBO and all fluctuation diagnostics These were successful. Low power ITG case with LBO data: 1120706008 High power TEM case with LBO data: 1120706029/30 We also had an attempt at a Highest power point, n seeded: 1120706033 (attempt) Step 4: Rotation profile changes/hollowing These were successful. Low power ITG case with higher density for rotation hollowing: 1120706015, 16, 17, 18 �?? these shots have density scans and show evidence of �??hollowing�?? rotation as density is increased from nl04= 0.60-0.85 Step 5: Intermediate 2.5 MW power case for LBO: success. 1120706021 Contingency 6 a): slight Bt scan for CECE High power TEM case with LBO + CECE Bt scan: 1120706031 Low power ITG case with LBO + CECE Bt scan: 1120706004 Thank you again! |
| Physics Operator Summaries |
| Entered: Jul 6 2012 05:10:58:167PM |
| Author: Robert Granetz |
Run summary for Wednesday 2012/07/06
MP689 - Validation of gyrokinetic transport models across the ITG/TEM
boundary in L-mode and I-mode plasmas
Session leader: A. White
Physics operator: R. Granetz
We had good I-mode and L-mode plasmas today, with good ICRF performance up
to 4 MW, although there were a lot of fizzles too. The goal was to match
the Te, ne, and Vtor of discharges on 1120221, which involved running
several different densities and RF powers, in upper null with the cryopump.
Last night we had a boronization which lasted only about an hour due to a
diborane leak problem, and as a result, the H-fraction rose during the day,
eventually reaching 15%
There were some data acquisition problems early in the run due to a disk
space problem. On shot 20 the EF1 switches didn't close, resulting in the
only dud.
Scorecard: 22 plasmas
1 dud (power supply issue)
9 fizzles (2 due to cryopump issues)
0 power supply tests
1 no-power MDSplus cycle test
0 no-power gas test
--------------
Total: 33 shot cycles
|
| Session Leader Comments | |||
| Jul 6 2012 09:13:29:013AM | 1120706001 | Anne White | Plan:
Loading segment 3 shot 1120221012 and loading a seg 1 cryopump startup segment from other shot (see po plan) Start off with low RF power shot (~1 MW), evaluate H/D ratio, check on heating. Outcome: No power shot. Needed to do a no power shot (spellmans were not on?) |
| Jul 6 2012 09:52:18:577AM | 1120706002 | Anne White | Plan:
Start off with low RF power shot (~1 MW), evaluate H/D ratio, check on heating. Loading segment 2 shot 1120221012 and loading a seg 1 cryopump startup segment from other shot (see po plan) Outcome: Shot ran. 1 MW, then 4 MW programmed in around 1.1 seconds. Got an H-mode. In Feb, 3.5 MW in stayed in L-mode, so we know we got > 3.5 MW in at least? |
| Jul 6 2012 09:55:16:467AM | 1120706003 | Anne White | Plan:
Repeat of last shot. Had some data issues, had a full disk. So just repeat shot 2 here and check things out. (need to see RF trace) Outcome: Fizzle. No cryo - valve stuck. |
| Jul 6 2012 10:13:51:060AM | 1120706004 | Anne White | Plan:
Repeat of shot 2. Outcome: Shot ran. Looks good. |
| Jul 6 2012 10:20:46:633AM | 1120706005 | Anne White | Plan:
Load in shot 1120221012, load in same RF power (1.1 MW) for low power ITG base case. At the moment, we do not know H/D ratio, but have decided not to take a LSN shot to check it out. We may revisit later as conditions evolve. Result: Shot ran. |
| Jul 6 2012 10:40:25:043AM | 1120706006 | Anne White | Plan:
Load in shot 1120705006, this is a locked mode shot. Outcome: Shot ran. Good locked mode shot. |
| Jul 6 2012 10:53:18:163AM | 1120706007 | Anne White | Plan:
Load in shot 1120706005 from today, this is the low power (~1MW) ITG base case. Repeat shot for LBO and fluctuation diagnostics. Outcome: fizzle... |
| Jul 6 2012 11:10:29:630AM | 1120706008 | Anne White | Plan:
Load in shot 1120706005 from today, this is the low power (~1MW) ITG base case. Repeat shot for LBO and fluctuation diagnostics. Outcome: shot ran, good ITG base case, good match to shot 1120221012... |
| Jul 6 2012 11:19:00:397AM | 1120706009 | Anne White | Plan:
Load in shot 1120221014 from first day, this is the high power (~3.5MW) TEM base case. Outcome: Shot ran. |
| Jul 6 2012 11:32:08:340AM | 1120706010 | Anne White | Plan:
Match parameters from 1120221014 from first day, this is the high power (~3.5MW) TEM base case. Outcome: Shot ran. early run aways |
| Jul 6 2012 11:54:38:120AM | 1120706011 | Anne White | Plan:
Another attempt to match parameters from 1120221014 from first day, this is the high power (~3.5MW) TEM base case. Outcome: Locked mode. early drop in density near 0.5 seconds gave locked mode. |
| Jul 6 2012 12:23:59:187PM | 1120706012 | Anne White | Plan:
Another attempt to match parameters from 1120221014 from first day, this is the high power (~3.5MW) TEM base case. We modified the early density rise to try and bring up ne earlier, to avoid locked mode. Outcome: Fizzle. |
| Jul 6 2012 12:24:53:920PM | 1120706013 | Anne White | Plan:
Another attempt to match parameters from 1120221014 from first day, this is the high power (~3.5MW) TEM base case. Outcome: Shot disrupted, W injection? not a clear / usual injection though. Will back off on the power and skip step 3 for now, moving to step 4 of run plan to get the rotation scan. |
| Jul 6 2012 01:00:15:917PM | 1120706014 | Anne White | Plan:
Moving on to step 4 of the run plan for now (will revisit step 3, with different approach in a few shots). Shot 1120706005 from today is our new target (1.1 MW, 0.8 MA), but we will raise the density )nl04 target to 0.75) to try and get the hollow rotation profile/rotation scan data set. Outcome: Fizzle |
| Jul 6 2012 01:01:14:180PM | 1120706015 | Anne White | Plan:
Moving on to step 4 of the run plan for now (will revisit step 3, with different approach in a few shots). Shot 1120706005 from today is our new target (1.1 MW, 0.8 MA), but we will raise the density )nl04 target to 0.75) to try and get the hollow rotation profile/rotation scan data set. Outcome: good shot. good density match to target shot 1120221011, but Te is slightly too high and we pick up rotation reversal later in time. plan to reduce RF power slightky 100 kW next shot. |
| Jul 6 2012 01:02:14:473PM | 1120706016 | Anne White | Plan:
Repeat of shot 15,but reduce RF power slightky 100 kW to lower Te to match target shot 11 from 2/21 Outcome: fizzle, -- cyro issue |
| Jul 6 2012 01:11:13:680PM | 1120706017 | Anne White | Plan:
Repeat of shot 15,but reduce RF power slightky 100 kW to lower Te to match target shot 11 from 2/21 Outcome: shot ran |
| Jul 6 2012 01:25:04:997PM | 1120706018 | Anne White | Plan:
Repeat of shot 17, except for an Increase in density request to nl04 = 0.85 to push through to hollow rotation condition. Outcome: shot ran, some early runaways |
| Jul 6 2012 01:53:02:297PM | 1120706019 | Anne White | Plan:
Repeat of shot 18, except for DEcrease in density request to nl04 = 0.5. Outcome: no LBO data, but we have slow decrease in density over time that gave rotation scan, final data point. This shot completes step 4 of the run plan. We will next do step 5 (intermediate RF power L-mode, 2.5 MW) |
| Jul 6 2012 01:54:35:957PM | 1120706020 | Anne White | Plan:
We will next do step 5 (intermediate RF power L-mode, 2.5 MW). loading shot 8 from today, but requesting increased RF power Outcome: dud |
| Jul 6 2012 02:17:50:603PM | 1120706021 | Anne White | Plan:
We will next do step 5 (intermediate RF power L-mode, 2.5 MW). loading shot 8 from today, but requesting increased RF power Outcome: LBO is happy with this intermediate power shot (i.e. repeat of shot 16 from 2/21). Step 5 is done. Move on to high power case. Back to step 3 for next shot. |
| Jul 6 2012 02:21:03:540PM | 1120706022 | Anne White | Plan:
We are going back to complete step3. Need to get the high power repeat of shot 14 from 2/21 (high RF power L-mode, 3.5 MW). Repeat shot 21, but with higer RF request. |
| Jul 6 2012 02:24:18:587PM | 1120706022 | Anne White | Plan:
We are going back to complete step3. Need to get the high power repeat of shot 14 from 2/21 (high RF power L-mode, 3.5 MW). Repeat shot 21, but with higer RF request. Outcome: shot ran. some early run aways... |
| Jul 6 2012 02:40:17:380PM | 1120706023 | Anne White | Plan:
Increase RF power by 400 kW to match centraL Te on target shot (14 from 2/21). Outcome: shot ran. disruption in rampdown. |
| Jul 6 2012 02:55:11:963PM | 1120706024 | Anne White | Plan:
Increase RF power to 4.5 MW to match centraL Te on target shot (14 from 2/21). Also, increase lower Delta to match target more closely. Outcome: fizzle |
| Jul 6 2012 03:16:39:170PM | 1120706025 | Anne White | Plan:
Another attempt for high power/TEM target: Increase RF power to 4.5 MW to match centraL Te on target shot (14 from 2/21). Also, increase lower Delta to match target more closely. Also, we are decreasing density request to nl04 = 0.56 Outcome: locked mode, and then disruption. |
| Jul 6 2012 03:38:15:567PM | 1120706026 | Anne White | Plan:
Another attempt for high power/TEM target: Go back to original density request nl04 = 0.61 Outcome: Fizzle |
| Jul 6 2012 03:41:13:227PM | 1120706027 | Anne White | Plan:
Another attempt for high power/TEM target: Outcome: fizzle |
| Jul 6 2012 04:06:33:267PM | 1120706028 | Anne White | Plan:
Another attempt for high power/TEM target: Outcome: successful match to target, in terms on ne, Te and neutron rate. The RF was nto as steady as we'd like so repeat. |
| Jul 6 2012 04:09:17:537PM | 1120706029 | Anne White | Plan:
Repeat shot 28 (good TEM target for step3) , but need steady RF for the three LBO injections Outcome: RF trip at 1.2 sec, and LBO injection was at t ~ 1.16... so need to repeat this shot. |
| Jul 6 2012 04:28:10:123PM | 1120706030 | Anne White | Plan:
Repeat shot 29 (good TEM target for step3) , but need steady RF for the three LBO injections Outcome: RF trip at 1.25 sec, but we did get 3 LBO injections... so increase Bt to 5.44 for CECE next shot. |
| Jul 6 2012 04:28:47:593PM | 1120706031 | Anne White | Plan:
Repeat shot 30 (good TEM target for step3), but with slight increase in Bt to 5.44T per CECE request for scan. |
| Jul 6 2012 04:58:42:357PM | 1120706032 | Anne White | Plan:
Go to highest power RF for TEM scan, use N seeding. Outcome: fizzle...but it looks like we got cleared for one more shot. |
| Jul 6 2012 05:11:51:060PM | 1120706033 | Anne White | Plan:
Last shot of the day. Go to highest power RF for TEM scan, use N seeding. Outcome: shot ran |
| Physics Operator Comments | |||
| Jul 5 2012 04:51:02:113PM | Robert Granetz | Load seg 1 from startup on 1120626001, which was a successful cryopump startup. Load seg 2 from seg 3 of 1120221012 | |
| Jul 6 2012 09:13:43:770AM | 1120706001 | Robert Granetz | Shot 01 -- no-power test (excitation was not turned on) Next shot: try for plasma |
| Jul 6 2012 09:39:38:403AM | 1120706002 | Robert Granetz |
Shot 02 -- Plasma, good shot, but lots of data are missing. 0.8 MA, 5.4 T, ne0=1.3e20 m-3 (YAG), USN
ICRF fired, but we don't have any power traces. From the YAG, it looks like we had an H-mode.
We having a delay while Tom Fredian tries to solve the DAQ problems
Next shot: repeat
|
| Jul 6 2012 09:55:25:730AM | 1120706003 | Robert Granetz | Shot 03 -- Fizzle. No cryopump...a valve malfunctioned Next shot: try another repeat |
| Jul 6 2012 10:15:47:327AM | 1120706004 | Robert Granetz |
Shot 04 -- Plasma, good shot. 0.8 MA, 5.4 T, 0.6e20 m-2 (target), USN
P_rf=0.75 MW, then 4.0 MW. Got a good H-mode (in upper null) during
the 4 MW phase. H/D signal level is too low to trust
Next shot: repeat, but reduce I_TF by 1 kA; different ICRF programming
|
| Jul 6 2012 10:27:58:273AM | 1120706005 | Robert Granetz | Shot 05 -- Plasma, good shot. Prf=1.25 MW, L-mode, USN Next shot: load locked mode shot (1120705006 seg 3) into seg 3, and activate |
| Jul 6 2012 10:38:20:900AM | 1120706006 | Robert Granetz | Shot 06 -- Plasma, good locked mode shot for HIREX calibration. Disrupted at t=1.62 s Next shot: go back to shot 5 |
| Jul 6 2012 10:56:08:713AM | 1120706007 | Robert Granetz | Shot 07 -- Fizzle. Maybe it was the previous locked mode disruption Next shot: try again, no changes |
| Jul 6 2012 11:24:39:340AM | 1120706008 | Robert Granetz |
Shot 08 -- Plasma, good shot. Prf=1.25 MW, L-mode, USN. There were 4 CaF2 LBO injections,
and one natural injection at 1.04 s
Next shot: load 1120221014 seg 3 into seg 2
|
| Jul 6 2012 11:26:12:070AM | 1120706009 | Robert Granetz | Shot 09 -- Plasma, good shot. Prf=3.6 MW. USN, I-mode Next shot: tweak Btor (-1 kA) and nl_04 (-0.15e20 m-2) |
| Jul 6 2012 11:37:40:763AM | 1120706010 | Robert Granetz |
Shot 10 -- Plasma, good shot. Density was creeping up, but the gas valve is not fueling, and
the cryopump is running.
Next shot: repeat, but adjust ICRF power to come more from J and less from D & E, which may
outgas less
|
| Jul 6 2012 11:50:54:797AM | 1120706011 | Robert Granetz | Shot 11 -- Plasma, good shot. We got a locked mode early though. Next shot: briefly increase nl_04 early in the shot to prevent locked mode |
| Jul 6 2012 12:03:54:623PM | 1120706012 | Robert Granetz | Shot 12 -- Fizzle Next shot: reduce pre-fill by 3 ms |
| Jul 6 2012 12:27:57:483PM | 1120706013 | Robert Granetz |
Shot 13 -- Plasma, but disrupted at t=0.61 s due to high-Z influx
Next shot: reload shot 5 from today and increase nl_04 to 0.75e20 m-2;
reduce pre-fill by another 2 ms to compensate for disruption;
start TF 100 ms earlier (for polarimetry) by adjusting PLC start time
|
| Jul 6 2012 12:33:02:217PM | 1120706014 | Robert Granetz | Shot 14 -- Fizzle. Next shot: add 2 ms back to pre-fill pulse |
| Jul 6 2012 12:49:28:217PM | 1120706015 | Robert Granetz | Shot 15 -- Plasma, good shot. Prf=1.27 MW, USN, L-mdoe, 0.75e20 m-2. Next shot: no DPCS changes; some ICRF changes |
| Jul 6 2012 01:00:47:893PM | 1120706016 | Robert Granetz | Shot 16 -- Fizzle. Cryopump pressure burped just before commutation. Next shot: try again, no changes |
| Jul 6 2012 01:16:16:900PM | 1120706017 | Robert Granetz | Shot 17 -- Plasma, good shot. Prf=1.15 MW, USN, L-mode Next shot: increase nl_04 to 0.85e20 m-2 |
| Jul 6 2012 01:29:49:577PM | 1120706018 | Robert Granetz |
Shot 18 -- Plasma, good shot. Prf=1.15 MW, USN, L-mode
We've had 4 CaF2 LBO injections on most of these shots, including this one.
Next shot: reduce nl_04 to 0.5e20 m-2
|
| Jul 6 2012 01:50:02:257PM | 1120706019 | Robert Granetz |
Shot 19 -- Plasma, good shot. 0.6e20 m-2 with slight decay; USN, Prf=1.15 MW
LBO laser didn't fire
Next shot: reload seg 2 from shot 8 today
|
| Jul 6 2012 01:54:55:463PM | 1120706020 | Robert Granetz | Shot 20 -- Dud. EF1 switches didn't close Next shot: try again |
| Jul 6 2012 02:16:59:090PM | 1120706021 | Robert Granetz | Shot 21 -- Plasma, good shot. Prf=2.6 MW, LSN, 0.6e20 m-2, 4 LBO CaF2 injections Next shot: repeat, no changes |
| Jul 6 2012 02:29:33:757PM | 1120706022 | Robert Granetz |
Shot 22 -- Plasma, good shot. 0.8 MA, 5.4 T, 0.6e20 m-2, USN, 3.5 MW, I-mode,
4 CaF2 LBO injections
Next shot: no DPCS changes; increase Prf
|
| Jul 6 2012 02:51:11:037PM | 1120706023 | Robert Granetz | Shot 23 -- Plasma, good shot. Prf=4.0 MW, nl_04=0.6e20 m-2 Next shot: reduce RXL by 3 mm to increase lower triangularity from 0.275 to 0.29 |
| Jul 6 2012 03:03:47:200PM | 1120706024 | Robert Granetz | Shot 24 -- Fizzle. Another post-disruption fizzle? Next shot: try again; reduce nl_04 by 0.5e19 m-2 |
| Jul 6 2012 03:15:43:443PM | 1120706025 | Robert Granetz | Shot 25 -- Plasma, disrupted at t=0.78 s. Locked mode? Prf=4.5 MW. Next shot: increase density by 0.5e19 m-2 (back to 0.61e20 m-2) |
| Jul 6 2012 03:26:34:657PM | 1120706026 | Robert Granetz | Shot 26 -- Fizzle (post-disruption) Next shot: try again |
| Jul 6 2012 03:44:05:990PM | 1120706027 | Robert Granetz | Shot 27 -- Fizzle. Next shot: shorten pre-fill pulse by 5 ms |
| Jul 6 2012 03:56:52:933PM | 1120706028 | Robert Granetz | Shot 28 -- Plasma, good shot. Prf=4.5 MW, 0.6e20 m-2, USN, 4 CaF2 LBO injections Next shot: add 2 ms to prefill |
| Jul 6 2012 04:12:06:037PM | 1120706029 | Robert Granetz | Shot 29 -- Plasma, good shot. Prf=4.5 MW, but D faulted off at t=1.2 s, so we need to repeat. Next shot: repeat, no changes |
| Jul 6 2012 04:27:42:663PM | 1120706030 | Robert Granetz | Shot 30 -- Plasma, good shot. 4.5 MW, but D faulted off again at 1.25 s. Next shot: increase Itf by 1 kA; LBO injection timings will be changed |
| Jul 6 2012 04:51:06:220PM | 1120706031 | Robert Granetz |
Shot 31 -- Plasma, good shot. 4.5 MW, 0.6e20 m-2, USN, 4 CaF2 LBO injections
Next shot: puff N2 through H-bottom: program PG5 for 60 volt pulse from t=0.4 to 1.3 s. N2 plenum
pressure is 20 psi
|
| Jul 6 2012 04:58:19:493PM | 1120706032 | Robert Granetz | Shot 32 -- Fizzle. Next shot: subtract 1 ms from pre-fill |
| Jul 6 2012 05:14:23:183PM | 1120706033 | Robert Granetz | Shot 33 -- Plasma, good shot, but the E antenna faulted off early. Prf=3.5-4 MW, USN, 0.6e20 m-2 End of run |
| Engineering Operator Comments | ||||
| Shot | Time | Type | Status | Comment |
| 1 | 09:08:41:527AM | Plasma | Bad | Spellmens not turned on |
| 2 | 09:24:01:120AM | Plasma | Bad | Datasystem problems |
| 3 | 09:51:00:270AM | Plasma | Ok | |
| 4 | 10:04:48:097AM | Plasma | Ok | |
| 5 | 10:17:58:950AM | Plasma | Ok | |
| 6 | 10:33:16:393AM | Plasma | Ok | |
| 7 | 10:47:33:490AM | Plasma | Ok | |
| 8 | 11:00:44:220AM | Plasma | Ok | |
| 9 | 11:15:43:560AM | Plasma | Ok | |
| 10 | 11:29:08:007AM | Plasma | Ok | |
| 11 | 11:43:08:627AM | Plasma | Ok | |
| 12 | 11:57:49:963AM | Plasma | Ok | |
| 13 | 12:11:32:520PM | Plasma | Ok | |
| 14 | 12:28:29:310PM | Plasma | Ok | |
| 15 | 12:41:59:087PM | Plasma | Ok | |
| 16 | 12:55:08:860PM | Plasma | Ok | |
| 17 | 01:08:26:087PM | Plasma | Ok | |
| 18 | 01:21:56:060PM | Plasma | Ok | |
| 19 | 01:36:06:657PM | Plasma | Ok | |
| 20 | 01:51:27:980PM | Plasma | Bad | No EF1's |
| 21 | 02:06:29:837PM | Plasma | Ok | |
| 22 | 02:20:57:493PM | Plasma | Ok | |
| 23 | 02:36:00:567PM | Plasma | Ok | |
| 24 | 02:52:24:550PM | Plasma | Ok | |
| 25 | 03:08:42:773PM | Plasma | Ok | |
| 26 | 03:21:55:570PM | Plasma | Ok | |
| 27 | 03:35:23:843PM | Plasma | Ok | |
| 28 | 03:49:05:967PM | Plasma | Ok | |
| 29 | 04:04:10:160PM | Plasma | Ok | |
| 30 | 04:20:09:147PM | Plasma | Ok | |
| 31 | 04:39:23:830PM | Plasma | Ok | |
| 32 | 04:54:30:917PM | Plasma | Ok | |
| 33 | 05:07:30:173PM | Plasma | Ok | |
| System Availability | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Jul 6 2012 09:08:19:180AM | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||