Alcator C-Mod Run 1100210 Information

Miniproposals

Miniproposal: 597

Date Filed: 2/5/2010

Title: ICRF Mode Conversion Flow Drive at 8 Tesla

First Author: Yijun Lin

Session Leader: Yijun Lin (shots 1-17)

Operators
Session leader(s):	Yijun Lin
Physics operator(s):	Steve Wolfe
Engineering operator(s):	Bill Cochran,Bill Byford,Gary Dekow

Engineering Operator Run Comment
MP597, mode conversion flow drive at 8 Tesla.

Session Leader Plans

Entered: Feb 9 2010 03:35:25:840PM

Author: Yijun Lin

1100210: MP597, mode conversion flow drive at 8 Tesla.

the purpose of this experiment is to explore mode conversion flow drive at 8 Tesla using all available RF power.

Main diagnostics: HIREX, ECE, PCI, helium monitor, etc.

After successfully bringing up field to 8 T (see step 1 in PO plan), we will run the following:

nl04 = 0.7, Ip 1 MA, Upper-single-null,
RF power 3 steps (1.6, 3.2, 4.8 MW, ~200 ms each step), J in +90 degree phase.

1). he3 scan. 50 ms, 100 ms, 200 ms, 250 ms (i may change the puff length on-the-fly based on the result, for example, 50, 100, 150, 200, or 50, 75, 100, 125 ms).

2). If little rotation seen in 1), choose the best He3 puss length, and lower nl04 to 0.5 @ Ip = 1.0 MA. If still no flow, raise Ip to 1.2 MA and nl04 = 0.5.

3). Density scan, nl04 = 0.5, 0.9, 1.1e20.

4). Scan Ip. 0.8, 1.2, 1.4 MA (two shots each at different J phase).

5). Run constant RF power and get the max. rotation.

6). If there is any time left, run LSN plamas.

Physics Operators Plans

Entered: Feb 9 2010 11:46:54:503AM

Author: Steve Wolfe

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

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

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

Power systems as on: 1091204004 **Except the following:**
TF start at -1.5sec, invert=1.3sec;
TF current= 185ka (will increase in steps to 235kA)
Note: Alternator should be running at 1716 RPM

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 Enabled (PG1)
fill B-side upper with 15psi He3; Hybrid DISABLED (PG2)
fill B-main (C-side) with 40 psi D2 Hybrid enabled (PG3)
fill NINJA with 10 psi D2 DISABLED

Enable gatevalves and shutters: ECE, VUV, HiREX Sr, Z-bolo, B-spectrometer

Torvac gatevalve toggle (yes/no):No

Boronization(yes/no): no
Overnight ECDC (yes/no): YES
ICRF(yes/no): Yes (all four transmitters)
LH(yes/no): no
Cryopump (yes/no): YES Starting with first shot.
Note: Once we get up to high field, the shot cycle will be
20 minutes instead of the usual 10minutes, so the cryopump
automatic cycle may need to be adjusted or run manually.

Vessel temperature: 35/35/35

***************************************************

Physop Plan:
------------

This run will go to Btor=8.0T. The first several shots will be working our
way up in field, roughly 6.5T, 7.0, 7.5, 8.0. The breakdown will be on
the rise for some of these, so I'll need to be adjusting the EF1's and EF4
currents as we go. May as well deal with the cryopump at the same time.
It could be a long, snowy day.

1. Work field up to working level (8T)
For each shot, monitor alternator, TF temps, bus, ...
Load seg2 from 1091204004, decrease nl04 from 0.9 to .7e20
and change TF
a) Engineering TF limit=185,
DPCS program=-180e3, (seg1 and 2) start at -1.5sec, rampdown from 1.3sec
Also rampdown Ip from 1.3sec.
Adjust pg4 for cryopump
b) Engineering TF limit=205ka
DPCS program TF=-195000 (seg1 and 2)
In seg1: IC_EF1U=IC_EF1L=-5850, IC_EF4 to -1290
c) Engineering TF limit=215
DPCS program (seg1 and 2): TF=-208000
Seg1: IC_EF1U=IC_EF1L=-5875, IC_EF4=-1285 (depending on results of b)
d) Engineering TF limit=235kA
DPCS program (seg1 and 2): TF=-224000
Seg1: IC_EF1U=IC_EF1L=-5900, IC_EF4=-1280 (depending on results of c)
If necessary, reduce flattop time to keep alternator rpm's above
the lower critical value, ~1510rpm.

Shot cycle at 8T will be 20 minutes minimum in RECOOL

2. Begin MP#597 experimental program step 2 (5 shots):
a) Enable He3 puff (PG2) at 0.2sec, 50msec duration.
b) 100msec puff
c) 150msec puff
d) 200msec puff
e) 250msec puff

3. If called for by SL, reduce nl04 and/or raise Ip (? shots)

4. Scan nl04: 0.5, 0.9, 1.1e20 (5 shots)

Probably will run out of daylight by this point, but if there is
time left continue with:

5. Ip scan (9 shots): 0.8, 1.2, 1.4MA, at least 2 shots per current.

6. Change RF power program (2 shots)

7. Go to lower null and look for rotation in H-mode. There is no
way we're going to get to this step, so I'm not even going
to set up a LSN shot.

Session Leader Summaries

Entered: Feb 11 2010 08:54:58:190AM

Author: Yijun Lin

Got 7 plasmas with RF (some TF problems and RF problems).

We had done some scan on He3, and also changed density.

Lower density gives some higher rotation, and also it seems 150 ms He3 puff gives me the highest rotation. Also the rotation seems to be satuated at high power (4.8 MW) at 1 MA.

Rotation up to 90 km/s has been observed. But this level is close to the intrinsic rotation. Maybe there is too little He3 for mode conversion.

Interestingly, we got record Te and Ti in shot 12

New physics regime for further study: Like optimal LHCD target? Ti heating for transport study, etc..

Run will continue on 1100211, and check SL_summary there.

Physics Operator Summaries

Entered: Feb 10 2010 05:51:05:877PM

Author: Steve Wolfe

Physop summary for Wednesday, Feb 10, 2010 MP#597 Mode conversion flow drive at 8T SL: Y. Lin PO: wolfe EO: Cochran, Byford, Dekow A difficult but productive day of high field operation. It's not clear whether significant flow drive was observed, or just the level consistent with the normal intrinsic rotation, but very hot plasmas, over 8keV, were produced. This experiment has been held over for another day tomorrow. All shots used the cryopump, which behaved perfectly today despite the long and non-constant shot intervals. All shots had TF starting at -1.5sec, and current and TF inverting at 1.3sec. Breakdown was at elevated field, typically at 7.3T after shot#3, and used modified EF1 and EF4 currents, as indicated in the logbook. The work-up shots to get to the 8T level had one hiccup, a TF crowbar before t=0 on shot#3, which was supposed to be 7.5T. The shot actually ran through about .7sec before disrupting. Six fuses were found to be blown in converter 6 and one in converter#2. For the remainder of the day fuses were checked between shots, and no further fuse failures were found. After a 100kA TF test on shot#4 we resumed going up in field, and shot#6 was the first 8T pulse and the start of the MP. The TF breakers pulled out after the shot was over and all current was out of the supplies. This problem continued for much of the day and remains unexplained. On some shots there were spurious IOC faults at about 4.25 sec, and on others there were just unspecified Type 2 faults. Bill and Gary are setting up instrumentation to try to determine the cause. Later in the day we dropped the field from 8.0 to 7.8T and the breakers stayed in. Most shots had (unintentional) injections of various magnitudes. Shot#9 disrupted in flattop, and also experienced a series of faults in the aftermath, including a TF crowbar and an alternator fault. It appeared that a DC breaker at the alternator opened around 1.35sec, shortly after the TF inversion, resulting in loss of excitation. The resulting drop in line voltage caused the TF crowbar at 2.06sec. This problem did not recur. Runaways were a problem all day. I ended up raising the puff as far as 75msec, getting over .1mTorr pressure at t=0, but was unable to eliminate the runaways, except for shots immediately after disruptions. Tweaking EF4 10amps more positive did not seem to help. Neither did tweaking the BR_0. I ended up putting both of those back to their original settings by the end of the run, following a pair of fizzles (#15,16) that were probably due to the high pre-puff. Shot#11 was an early runaway disruption with vertical thrashing. I reduced the P gain on ZCUR3 before .24sec, and this seemed to reduce the vertical thrash that was happening around that time on all shots, though it didn't completely cure it. The RF had its own difficulties, losing two or three shots when the RF control signals did not get sent from their waveform generator, resulting in nice full length ohmic 8T shots. However, when they managed to fire the RF seemed pretty reliable into these upper null L-mode plasmas. Many shots had Te > 8keV according to both ECE and TS, and Catherine reported neutron Ti of 9keV on at least one shot, although this is sensitive to the D deficit and these shots all reported very high Zave values, around 7! Neutron rates over 1e14 were seen on several shots, although the EFIT Wplasm values did not seem consistent with the Rdd, mostly W < 130kJ. We had RF shots at two densities (7 and 5e19) and two currents (1 and 1.2MA). He3 puffs were scanned from 50msec to 200msec, with most data at 150msec. Shots #6-13 were at B=8.0T. Shots#14-17 were attempts to use 7.8T, but we didn't get any successful shots with full RF power. The first two 1.2MA shots (#13,14) disrupted early in rampdown with vertical instability problems. This was fixed (?) by slowing down the ramp and the clearin ramp. Once we got into the program, the TF temperature began to ratchet up with 20minute shot intervals, and it was necessary to slow this down further to keep the TF resistance under 2mOhm. Probably 25 or 30 min will be required. The oxygen level in the cell was also showing low for much of the day, not that there was a lot of call for cell access. Scorecard: Tests 1 Duds 0 Fizzles 2 Plasmas 14 (11 into rampdown) ========== == Shots 17

Session Leader Comments

Feb 10 2010 09:04:52:270AM 1100210001 Yijun Lin 6.5 T, 1 MA, nl = 0.7e20 m^-2. full length. good shot.
Helium monitor baseline 0.008.
No RF.
Next: higher field.

Feb 10 2010 09:29:19:383AM 1100210002 Yijun Lin 7.0 T, 1 MA, nl = 0.7e20 m^-2. ne0 = 2e20, Te0 = 2.1 keV, Helium 0.008.
plasma full length.
No RF.
Next: higher field to 7.5 T.

Feb 10 2010 10:15:10:747AM 1100210003 Yijun Lin Trying to get 7.5 T.
TF faults (6 blown fuses...). Bt only to 7.1 T at t = -0.06 sec.
plasma to 0.72 sec.

Feb 10 2010 11:32:03:363AM 1100210004 Yijun Lin TF test 3.5 T. good.
Checking the calibration of one of the IOC indicators. Fine.
Next: 7.5 T. Try plasma

Also run RF power, 3 steps. 50 ms He3 from t = 0.2 sec.

Feb 10 2010 11:50:06:480AM 1100210005 Yijun Lin 7.5 T. 1 MA. Good.
No RF due to control system problem.
50 ms He3 --> 0.017 in He monitor.
Next: 8.0 T, and with RF.

Feb 10 2010 12:07:47:780PM 1100210006 Yijun Lin 8.0 T, 1 MA, nl04 0.7, He3 50 ms, te0 = 4, ne0 = 2.2
50 ms He3. He monitor 0.02.
Hirex DV [km/s] 75
MCFD scaling: 160
Rice scaling: 75

This is supposed to be minority heating. So no surprise? (following the Rice scaling...)
(Decent minority heating. Longer sawtooth, and high Te...)

Next: 100 ms He3, and see whether we can get larger rotation
(this is a crucial test...)
W injection at 1.3 sec.

Feb 10 2010 12:39:30:510PM 1100210007 Yijun Lin 8.0 T, 1 MA, USN, nl0 = 0.7, te0 = 5, ne0 = 2.2
100 ms He3. He monitor 0.05
Hirex DV [km/s] : 80.
Rice scaling [km/s]: 70

Not much different from the intrinsic rotation scaling, but below the MCFD scaling from 5.1 T.

MC waves seen in PCI at R=66-67 cm.

Knobs to try: ne, ip, he3.

next: try the same He3, lower density to 0.5. Also lengthen the RF pulse from (0.6-1.3 sec).

Feb 10 2010 01:00:18:837PM 1100210008 Yijun Lin 8.0 T, 1 MA, USN, nl0 = 0.5, te0 = 5, ne0 = 1.8
100 ms He3. He monitor 0.02 at 1 sec.
Hirex DV [km/s] : 80. did not increase at the last step of RF
but Stored energy did increase a lot.
Rice scaling [km/s]: 110

Comparing the 3.2 MW Step, this shot has a much large rotation than shot 6.
(But it did not increase later. Does it mean He3 has been depleted...?)
(Was the cryopump getting rid of the He3?)

next: Try He3 puff 200 ms. Other parameters the same.

Feb 10 2010 01:57:23:120PM 1100210009 Yijun Lin 8.0 T, 1 MA, USN, nl0 = 0.7, te0 = 4.5, ne0 = 1.8. Disrupted @ 1.1 sec.
TF crowbar (it seems caused by a breaker-opening in alternator)

200 ms He3. He monitor 0.05 at 1 sec, 0.07 @ 0.8 sec.
Hirex DV [km/s] : 95.
Rice scaling [km/s]: 75.

Comparing the 3.2 MW Step, this shot has smaller rotation than shot 8.
Rotation still goes up at the 4.8 MW step, but disrupted shortly after.

I think the He3 level is too high at the beginning of the RF pulse, but it may be just right later. I suspect He3 monitor signal = 0.04 is the optimal one.

next: 150 ms He3. keep other parameters the same.

Feb 10 2010 02:42:01:847PM 1100210011 Yijun Lin Early disruption. Before RF.

Feb 10 2010 03:40:04:677PM 1100210012 Yijun Lin 8.0 T, 1 MA, USN, nl0 = 0.5, te0 = 7 keV, ne0 = 1.8. Disrupted @ 1.1 sec.
(Hottest C-Mod plasma? GPC saturated...)
(9 keV Ti from Fiore?)

150 ms He3. He monitor 0.05 at 1 sec, 0.07 @ 0.8 sec.
Hirex DV [km/s] : (Too little signal in Ar line.
(John said argon are burned out).
Mo line gives about 70 km/s
Rice scaling [km/s]: DW = 110

next: 150 ms He3. 1.2 MA.

Feb 10 2010 03:43:23:383PM 1100210013 Yijun Lin 8.0 T, 1.2 MA, USN, nl0 = 0.5, te0 = 7 keV, ne0 = 1.8.

150 ms He3. He monitor 0.05 at 1 sec, 0.07 @ 0.8 sec.
Hirex DV [km/s] : Mo line about 80 km/s. Argon line to 90 km/s, but not reliable. (more Ar next shot).
Rice scaling [km/s]: DW = 120, dw/Ip = 100.

next: 150 ms He3. 1.2 MA. 7.8 T. In this way, the MC will occur more off-axis. Better for MC ICW, check it out.

Feb 10 2010 04:17:30:907PM 1100210014 Yijun Lin 7.8 T, 1 .2MA, USN, nl0 = 0.5, te0 = 5 keV, ne0 = 1.5

150 ms He3. He monitor 0.05 at 1 sec, 0.07 @ 0.8 sec.

No power from D port, so the RF power is lower.

PCI Mode conversion at R <= 65 cm. (following the change of Bt)
J port 78 MHz MC is on axis.

Hirex DV [km/s] : Mo line about 70 km/s. (3 MW)
Rice scaling [km/s]: DW = 76, dw/Ip = 63.

next: repeat

Feb 10 2010 04:15:00:563PM 1100210015 Yijun Lin fizzle.

Feb 10 2010 04:35:11:177PM 1100210016 Yijun Lin fizzle.

Physics Operator Comments

Feb 10 2010 07:16:43:307AM Steve Wolfe
Set up for 1100210 load from 1091204004 ; Import seg1 from 1100205017 In seg1: Note rcur offset=2500 BR_0 offset=.0005 IC_EF1U=IC_EF1L=-5900 IC_EF4= -1300 Change TF waveform to start -1.5, value=-180000, invert at 1.3sec PG4 from 31 to 50msec (at -.3sec) In seg2: V#1-16 Copy TF_CUR from seg1 PG2 (b-side upper) He3 waveform from .2 to .25 (for later) PG1 (b-side lower Ar waveform from .3 to .35 (was .375) All_P: Nl04 from 9e19 to 7e19, ramp-down at 1.3sec Ip rampdown from 1.3sec IC_EF4 rampdown to 1.3sec leave ZCUR, clearin, xpts as is. Load at 10-Feb-2010 07:16:29.00 Open tree /home/wolfe/pcs_scratch -1 Open tree done

Feb 10 2010 07:56:01:237AM Steve Wolfe
According to IHH log entry for 1090903, the magic values for change in EF1 and EF4 current are : dEF1/dTF = 2.46 A/kA dEF4/dTF = 0.59 A/kA. The example shot from 1060706010 has TF=198kA at t=0, so a delta of 48kA would mean dEF1 = 118A, dEF4=28A. => EF1 from -5900 to -5780, EF4 from -1300 to -1272 For first shot TF=-180kA, change the EF1 settings from -5900 to -5830, leave EF4 at -1300; note RRP was running all day yesterday with EF4=-1315 Load at 10-Feb-2010 07:55:33.00 Open tree /home/wolfe/pcs_scratch -1 Open tree done

Feb 10 2010 09:04:25:427AM 1100210001 Steve Wolfe
Shot#1: Program 6.5T plasma full length, 6.47T looks good. Next: up to 7.0T

Feb 10 2010 09:27:57:007AM 1100210002 Steve Wolfe
Shot#2: up to 7.0T TF to -195000 , ENG limit to 205kA EF1 to -5790, EF4 to -1280 increase argon puff to 80msec Load at 10-Feb-2010 09:12:48.00 Open tree /home/wolfe/pcs_scratch -1 Open tree done plasma full length, 7.0T bd looks ok. Could use a little more gas? alternator rpm dips only to 1550 Next: Up to 7.5T

Feb 10 2010 10:05:06:047AM 1100210003 Steve Wolfe
Shot#3: Up to 7.5T TF to -208000 (eng limit to -215) Reduce pg3 in seg1 pg4 from 50 to 55msec Leave EF1 and EF4 as is, see how much higher TF actually gets at t=0 Seg2: add 50msec Ar puff (PG1) at 0.85sec Load at 10-Feb-2010 09:35:59.00 Open tree /home/wolfe/pcs_scratch -1 Open tree done Imp inj will pulse at 1.6sec TF crowbar, loud thump. Alternator fault. plasma started ok, disrupts at .71sec. TF crowbar near t=0, actually -.07sec; BT gets just t0 7.0T, same max current as on #2. Faults on alternator due to stator unloading on the crowbar. Crowbar seems to be due to IOC? There is an oscillation on current in cabinet 3. Alt varistor current to 700A at ~+.06sec Fuse checks, etc. in progress. Some delay expected.

Feb 10 2010 11:07:12:337AM 1100210004 Steve Wolfe
Shot#4: TF test under PLC control (100kA) Test looks ok. There will be a short delay while an IOC calibration in TF#2 is checked.

Feb 10 2010 11:38:21:247AM 1100210005 Steve Wolfe
Shot#5: Second try at 7.5T. No PCS changes from #3 RF will fire, enable B-side upper. plasma full length. 7.43T, got all the puffs, no rf? Alternator rpm down to 1537, no obvious vibration problem Next: Up to 8T

Feb 10 2010 12:18:07:887PM 1100210006 Steve Wolfe
Shot#6: Up to 8T TF limit to 235 TF prog to -224000 No other seg1 changes ImpIng will move to 1.5sec, still in rampdown Load at 10-Feb-2010 11:42:25.00 Open tree /home/wolfe/pcs_scratch -1 Open tree done plasma full length, injection in flattop, .87 sec Looks like we got RF, neuts to 6e13 level Btor=7.96T. Alt rpm drops to 1525. Everything looks ok. Actually three IOC's came up on the TF at 4.35sec, after all the current was out of the supplies. No problems or explanation found. Next: He3 puff to 100msec

Feb 10 2010 12:28:36:507PM 1100210007 Steve Wolfe
Shot#7: He3 puff to 100msec, we're into the SL's program (2b) ImpInj moving to 1.3sec NINJA is going to puff at 1.35 (inner wall) Note that on #6 EF2L was running around -5000A, close to its rail; may want to push EF2byEF4 or IC_EF4 a bit more positive, but hold off for now. Note EF2byEF4 is presently at -2500. plasma full length, runaways early, no bounce in startup Breakers pulled after shot again, but no IOC, just came up Type2 fault Next: increase pg4, probably change He3 puff

Feb 10 2010 12:51:00:613PM 1100210008 Steve Wolfe
Shot#8: increase pg4 from 55 to 60msec, Lower nl04 from 7 to 5e19, decrease seg2 pg3 from 20 to 0 note nl04 PID=[5,2,6] Leave He3 at 100msec. Load at 10-Feb-2010 12:35:18.00 Open tree /home/wolfe/pcs_scratch -1 Open tree done plasma full length, still has runaways, breakers opened after the shot again; Bill suspects backup timer causing anonymous type 2 fault. Density did not come down much, looks like the RF is making its own. Neuts close to 1e14 Next: increase pg4 a bit more, see what Yijun wants

Feb 10 2010 01:20:42:487PM 1100210009 Steve Wolfe
Shot#9: increase pg4 from 60 to 67 msec, IC_EF4 from -1280 to -1270 (two startup changes at once!) He3 puff from 100 to 200ms (0.2:0.4sec) Load at 10-Feb-2010 12:58:00.00 Open tree /home/wolfe/pcs_scratch -1 Open tree done Bill and Bill have extended the backup timer to 7sec (was 6) to try to eliminate Type2 fault at end of pulse. Plasma, still runaways worse than last one Disrupts at 1.15sec, TF crowbar after the disruption, at 2.06sec Disruption looks like a killer injection. Matt says Mo

Feb 10 2010 02:21:11:137PM 1100210010 Steve Wolfe
Shot#10: Increase PG3 puff in seg1 He3 puff from 200 to 150msec Going to increase the wait time between shots, because TF is warming up. Need to finish checking the TF supplies anyway this time. Load at 10-Feb-2010 13:28:16.00 Open tree /home/wolfe/pcs_scratch -1 Open tree done Long discussion about what happened on the crowbar. It seems a DC breaker opened at the alternator at 1.35sec, causing loss of excitation and showing 1.5kA of varistor current. The subsequent drop in alternator voltage caused low-line fault resulting in TF crowbar at 2.05sec. Mike is checking whether a setpoint on a mechanical breaker at the alternator is responsible for the trip. Plasma full length, but breakers pulled after the shot, no crowbar. No runaways, No RF. Large injection on Zmeter at 22msec, not seen on Halpha. Injections on bolo at .42 and 1.2sec. Nl04 nice at 5e19.

Feb 10 2010 02:50:20:717PM 1100210011 Steve Wolfe
Shot#11: Add pg3 puff from .35 to .45sec to reduce drop in density at divert time Early disruption, .17sec, runaways in startup again. No faults from TF or alternator this time. No bounce in startup. Big vertical thrash before it disrupts, it's been doing that to some extent. Next: tweak BR_0

Feb 10 2010 03:08:45:750PM 1100210012 Steve Wolfe
Shot#12: BR_0 offset from .0005 to .0002, trying to reduce vertical thrash in startup. Drop ZCUR3 P from 6 to 4 before .35sec, to reduce thrash after seg switch No change in gas or pg4, expect the disruption to help runaways for one shot plasma full length no runways, lots of neuts, over 1e14 GPC's saturate at 8keV. TF breakers pulled after shot again Not clear if vertical behavior is really improved either early or between .1 and .2sec. Nl04 below 5e18 at 20msec, but essentially no runaways this time. Next: raise Ip to 1.2MA

Feb 10 2010 03:29:23:900PM 1100210013 Steve Wolfe
Shot#13: raise Ip to 1.2MA Drop zcur3 P from 4 to 3 between .116 and .24sec PG1 (argon) from 80 to 100msec at .3sec plasma disrupts at 1.55sec, lots of runaways early, 1e4 neutrons in pulse Time to do something about the runaways; wish I knew what. Next: pg4 to 75msec, increase clearin in rampdown (disruption was vertical)

Feb 10 2010 03:55:23:290PM 1100210014 Steve Wolfe
Shot#14: pg4 to 75msec, ramp clearin starting at 1.3sec in rampdown Increase first argon pulse from 100 to 150msec Decrease Btor to 7.8T (-218400A) Load at 10-Feb-2010 15:35:12.00 Open tree /home/wolfe/pcs_scratch -1 Open tree done plasma disrupts at 1.4sec, lots of runaways, fewer neutrons Vertical instability seems to start earlier, need to fix rampdown No TF faults or breaker trips this time.

Feb 10 2010 04:22:26:940PM 1100210015 Steve Wolfe
Shot#15: put clearin ramp back to 1.5sec, slow down after. Drop nl04 demand to 0 at 1.3sec, slow down Ip rampdown No startup changes, see if disruption helps the runaways Fizzle. well that's one way to get rid of runaways. pressure was up a little bit, to .107 mTorr. I guess I better not raise pg4 anymore. Breakdown is a little late. Next: drop IC_EF4 back to -1280

Feb 10 2010 04:36:38:147PM 1100210016 Steve Wolfe
Shot#16: drop IC_EF4 back to -1280 Fizzle again. Need to drop the fill? Next: pg4 from 75 to 65msec, BR_0 back to .0005

Feb 10 2010 05:03:31:893PM 1100210017 Steve Wolfe
Shot#17: pg4 from 75 to 65msec, BR_0 back to .0005 Still trying to get the 7.8T shot with all RF This time wait until cryopump is fully cold and 28 peak drops before going to INIT. plasma full length, some runaways, better than before. No RF! No TF faults. Maybe that 2.5% decrease in TF really makes the difference? Vertical thrash in startup is back, I think the BR_0 tweak is the difference there; the apparent z position starts at +.03, and rises to .05 before dropping back down. I would recommend reducing BR_0 offset to zero, but it's probably not a problem. Ratiomatic at .08mTorr at t=0. END OF RUN (more 8T tomorrow)

Engineering Operator Comments

Shot Time Type Status Comment

1 08:59:33:513AM Plasma Ok TF PLC 185kA

2 09:21:30:253AM Plasma Ok TF PLC 205kA

3 09:52:17:563AM Plasma Bad TF Type 1 Flt

4 10:58:19:810AM Test Ok TF 100kA PLC Test

5 11:32:25:537AM Plasma Ok

6 11:55:04:890AM Plasma Ok

7 12:20:18:793PM Plasma Ok

8 12:44:13:583PM Plasma Ok

9 01:09:06:270PM Plasma Ok

10 02:14:19:003PM Plasma Ok

11 02:37:13:297PM Plasma Ok

12 02:59:17:683PM Plasma Ok

13 03:22:26:860PM Plasma Ok

14 03:49:46:080PM Plasma Ok

15 04:12:51:453PM Plasma Ok

16 04:32:31:750PM Plasma Ok

17 04:52:12:350PM Plasma Ok

System Availability

Feb 10 2010 08:58:58:717AM

System Available Comment Availability
Changed Owner Description Who Can
Change
Active MHD no secured - tagged out Jun 02 2008 11:03AM (sears) Joe Snipes Active MHD Antenna sears,snipes
BES yes 7 horizontal views spread out R_maj=[0.72-0.9m], 3 cm over the tokamak midplane (beam) Jul 09 2009 05:12PM (bespam) Bill Rowan Beam Emission Spectroscopy bespam,liao,rowan
Bolometers yes 2pi (diode+foil), AXA, AXJ, WB3AX, WB4AX, LEDGE-AX working fine. MID-FOILS working fine. The LEDGE/DIV foils still need calibrations applied Aug 27 2009 09:09AM (mlreinke) Matt Reinke Bolometers hutch,mlreinke
Boronization yes Nov 13 2009 06:37AM (dekow) Jim Irby Boronization dekow,irby
CNPA no Single channel CNPA available as of 12/1707 Jun 10 2009 10:22AM (twf) Ron Parker Compact Neutral Analyzer parker
Cryopump - Upper Divertor yes Operational Nov 09 2009 09:12AM (irby) Brian LaBombard Upper Divertor Cryopump irby,labombard
CXRS yes The wide-view toroidal array was installed, spatially and absolutely calibrated. There are 7 toroidal chords intersect the beam at the major_R_range=[74.2:83.6]cm. Spatial resolution: 1.2 cm. The F-top wide-view poloidal array was installed and spatially calibrated. There are 19 chords intersect the beam at the major_R_range=[0.65:0.9.]m. Spatial resolution: 1.22 cm. Jul 09 2009 05:16PM (bespam) Bill Rowan Charge Exchange Spectroscopy bespam,blip,liao,rachmcd,rowan
D Alpha yes \ha2_bright is available; \SPECTROSCOPY::TOP.VUV.VIS_SIGNALS:MCP_VIS_SIG1 is not available Jul 01 2009 09:45AM (terry) Jim Terry Balmer Alpha Monitor irby,terry,wolfe
Dalsa yes system is aligned and operating; not yet calibrated Jul 14 2009 02:22PM (marmar) Earl Marmar Visible Bremsstrahlung marmar
Disruption Mitigation yes operational, but turned off Nov 03 2009 04:59PM (granetz) Robert Granetz Gas Jet granetz,whyte
Divertor IR no Mar 06 2007 10:50AM Glen Wurden Divertor IR Digital Video gwurden,terry
Divertor IR Spectroscopy no Mar 06 2007 10:51AM Glen Wurden Divertor IR Spectroscopy gwurden,terry
DNB no in test mode only Nov 03 2009 05:01PM (granetz) Robert Granetz Diagnostic Neutral Beam dterry,granetz,gung
ECDC yes Nov 09 2009 09:13AM (irby) Jim Irby 2.45 GHz, 3 kW, discharge cleaning system dekow,irby,pfeiffer
FRC-ECE yes All channels working and calibrated. Feb 02 2010 09:56AM (phillips) Perry Phillips Heterodyne ECE-32 channels phillips
G-Side Ratiomatic yes Gauge installed. Controller repaired. Aug 23 2009 10:36PM (toland) Brian LaBombard G-side ratiomatic ionization gauge labombard,toland
Glow Discharge no 6/10/09: Paddles meggered at 1000 v to machine ground (>300 Mohm) prior to closing the vacuum chamber. Plugs for Power Supply and Controls Unplugged and Red Tagged, Safe for In-Vessel Access Jun 10 2009 01:47PM (dekow) Jim Irby 1 kV, 5 A, glow discharge system dekow,dterry,irby
GPC yes Operational. Jul 28 2009 04:23PM (hubbard) Amanda Hubbard ECE Polychromater hubbard,schmidt
GPC2 yes Most channels operational. Jul 28 2009 04:23PM (hubbard) Amanda Hubbard ECE Polychromater hubbard,schmidt
GPI yes The Xpt-view, the midplane-view cameras are operational. The innerwall GPI (coupled to the fast-diodes) is available. Jul 01 2009 09:45AM (terry) Jim Terry Gas Puff Imaging terry,zweben
H/D yes poses no safety hazard for people working around the machine Jun 18 2009 01:04PM (marmar) Earl Marmar H/D Ratio marmar
HEAT yes Oct 27 2009 10:39AM (dekow) Gary Dekow - Machine Heaters - burke,dekow
Hirex Jr yes Hirex-Jr has been installed and tested Jun 17 2009 11:54AM (rice) John Rice High Resolution X-Ray ince,rice
Hirex Sr yes currently only one detector is operational, off-axis He-like argon emission Jul 14 2009 10:01AM (rice) John Rice High Resolution X-Ray ince,rice
HXR no In safe mode (high voltage turned off) May 27 2008 09:19PM (schmidt) Ron Parker Hard X-Ray Array parker,schmidt
ICRF D-Antenna yes operational at 80 MHz Jul 21 2009 04:49PM (wukitch) Steve Wukitch D-port antenna wukitch,ylin
ICRF E-Antenna yes antenna and FFT operational Jul 21 2009 04:49PM (wukitch) Steve Wukitch E-port antenna wukitch,ylin
ICRF J-Antenna yes available at 80 MHz and [0,pi,0,pi] phasing Sep 04 2009 10:01AM (wukitch) Steve Wukitch J-port antenna wukitch,ylin
Laser Blow-Off yes Requires some advance notice for laser start-up Oct 16 2009 12:46PM (g) Martin Greenwald Impurity Injection System g,nthoward
Lower Hybrid no Breaker locked and tagged out. Waveguide disassembly started. Open Waveguides have been shorted. May 28 2008 09:47AM (dterry) Ron Parker Lower Hybrid dterry,parker,wallaceg
LPI no Beam line removed May 30 2008 02:09PM (bose) Earl Marmar Lithium Pellet Injector bose,marmar
Ly-alpha yes Midplane, WB4-LY, LEDGE-LY all collecting data. WB1-LY not attached. Aug 27 2009 09:10AM (mlreinke) Matt Reinke Lyman alpha cameras labombard,mlreinke
McPherson yes Operating normally Aug 27 2009 09:10AM (mlreinke) Jim Terry VUV Spectrometer mlreinke,terry
Michelson yes Operational. Recalibrated 7/27/09. Jul 28 2009 04:22PM (hubbard) Amanda Hubbard ECE Te Profiles hubbard,schmidt
MKS yes Gauges are on. B-bottom is not operating - bad sensor head? Jul 14 2009 09:12PM (labombard) Brian LaBombard Baratron pressure gauges labombard
MLP no System is in edge lab. Version 2 drivers ready to test. Needs a student to help work on it. Jul 14 2009 09:20PM (labombard) Brian LaBombard Mirror Langmuir Probe Electronics System labombard
MSE no As of 6/10/09, MSE is calibrated & ready to go. Awaiting DNB. Jun 10 2009 10:34AM (sscott) Steve Scott Motional Stark Effect jinseok,sscott
Neutrons yes Neutron detectors are calibrated and ready to go. Voltages will be turned on prior to first plasma. Jun 10 2009 10:35AM (fiore) Catherine Fiore Neutron Detectors fiore
Neuts and Hards yes Power back on morning of 11/09 before run Nov 09 2009 09:10AM (irby) Jim Irby X-Ray/Neutron Detector at K-Hor irby
NINJA no Capillaries were tested in-vessel. Plenum has a leak and needs fixing. Jul 14 2009 09:14PM (labombard) Brian LaBombard NINJA gas puff labombard,terry
PCI yes Operational. Nov 12 2009 02:36PM (ntsujii) Miklos Porkolab Phase Contrast Imaging arai,ennever,ntsujii,porkolab
Penning Gauges yes High voltage is enabled (on during INIT, off during RECOOL). Jun 30 2009 09:42PM (labombard) Brian LaBombard Penning Ionization Gauges labombard
Plasma TV yes WIDE1, WIDE2 (chan 33), DANT, JANT and DIV are operational. Jul 01 2009 09:46AM (terry) Jim Terry Video of plasma via several cameras dekow,irby,terry,wolfe
Polarimeter no Safe for Machine Entry Sep 14 2007 12:17PM (irby) Jim Irby C-Mod Polarimeter irby
Power - Alternator Air Switch yes Checked and Operational as of 06/18/09 Jun 19 2009 08:04AM (irby) Gary Dekow feeds all the other supplies cochran,dekow,dterry,irby
Power - PEI yes Nov 13 2009 06:38AM (dekow) Gary Dekow PEI System cochran,dekow,dterry,irby
Power - TMX yes Checked out and ready for Magnet Tests as of 06/18/09 Jun 19 2009 08:07AM (irby) Gary Dekow Ef2s,. EFCs and A-Coils byford,cochran,dekow,dterry,irby
Power Systems yes Checked out and ready for Magnet Tests as of 06/18/09 Jun 19 2009 08:07AM (irby) Jim Irby C-Mod Magnet Supplies byford,cochran,dekow,dterry,irby
Probe Array - ISD yes Array is operational with new cPCI data system. Probe 14 has open circuit. Jul 14 2009 09:17PM (labombard) Brian Labombard Inner Lower Divertor Probe Array labombard
Probe Array - LH no LH launcher not installed. Cables are unplugged at the A-port rack. Jul 14 2009 09:16PM (labombard) Brian LaBombard Lower Hybrid Probe Array labombard
Probe Array - OSD yes Array is operational with new cPCI data system. Jul 14 2009 09:16PM (labombard) Brian LaBombard Outer Lower Divertor Probe Array labombard
Probe Array - UDIV yes Array is operational with new cPCI data system. Probe 13 has a bad cable (open). Jul 14 2009 09:17PM (labombard) Brian LaBombard Upper Divertor Probe Array labombard
Reflectometer yes Since 1100120000 the system is operational except for channel 110 which is not installed Jan 20 2010 09:17AM (dominguez) Earl Marmar Reflectometer dominguez,marmar
Scanning Probe - ASP yes Probe is operational. Needs plasma conditioning. Jul 14 2009 09:18PM (labombard) Brian LaBombard A-Port Scanning Probe labombard
Scanning Probe - FSP yes Probe is operational. Needs plasma conditioning. Jul 14 2009 09:18PM (labombard) Brian LaBombard F-Port Scanning Probe labombard
Scanning Probe - WASP yes System connected to A-port WASP. Needs plasma testing. Jul 14 2009 09:19PM (labombard) Brian LaBombard Inner Wall Scanning Probe labombard,nsmick
Sparker yes Sparker back in operation before 11/09 run Nov 09 2009 09:11AM (irby) Jim Irby Field Emission Preionization for C-Mod dekow,irby,parkin
TCI yes System restarted and aligned. Several chords available including NL04. Density Feedback available. Ready for plasma. Jun 18 2009 09:15AM (murray) Jim Irby Two-Color Interferometer irby,murray
TS - Core yes 2 lasers working. 15 spatial channels operational. Calibrated Oct 13 2009 07:49PM (yma) Jerry Hughes Core Thomson scattering jwhughes,yma,zhang
TS - Edge yes Operational, and calibrated. Oct 11 2009 03:01PM (jwhughes) Jerry Hughes Millimeter resolution edge Thomson scattering jwhughes,yma,zhang
Vispec no 350 and 670 nm, 4 spatial channels Nov 28 2007 09:58AM (agraf) Alex Graf Visible Spectrometer agraf
XTOMO yes Operating normally Aug 27 2009 09:10AM (mlreinke) Bob Granetz X-Ray Tomography granetz,mlreinke

Feb 10 2010 03:16:14:243PM

MC wave from J antenna, -0.65 m, intensity >0.6e16 m^-2

Feb 10 2010 04:10:13:987PM

MC wave from J antenna, -0.66 m, intensity >0.2e16 m^-2

Feb 10 2010 04:10:54:580PM

MC wave from J antenna, -0.65 m, intensity >0.6e16 m^-2

Feb 10 2010 04:11:21:530PM

MC wave from J antenna, -0.645 m, intensity >0.3e16 m^-2

Feb 10 2010 04:12:14:610PM

System Available Comment Availability
Changed Owner Description Who Can
Change
Active MHD no secured - tagged out Jun 02 2008 11:03AM (sears) Joe Snipes Active MHD Antenna sears,snipes
BES yes 7 horizontal views spread out R_maj=[0.72-0.9m], 3 cm over the tokamak midplane (beam) Jul 09 2009 05:12PM (bespam) Bill Rowan Beam Emission Spectroscopy bespam,liao,rowan
Bolometers yes 2pi (diode+foil), AXA, AXJ, WB3AX, WB4AX, LEDGE-AX working fine. MID-FOILS working fine. The LEDGE/DIV foils still need calibrations applied Aug 27 2009 09:09AM (mlreinke) Matt Reinke Bolometers hutch,mlreinke
Boronization yes Nov 13 2009 06:37AM (dekow) Jim Irby Boronization dekow,irby
CNPA no Single channel CNPA available as of 12/1707 Jun 10 2009 10:22AM (twf) Ron Parker Compact Neutral Analyzer parker
Cryopump - Upper Divertor yes Operational Nov 09 2009 09:12AM (irby) Brian LaBombard Upper Divertor Cryopump irby,labombard
CXRS yes The wide-view toroidal array was installed, spatially and absolutely calibrated. There are 7 toroidal chords intersect the beam at the major_R_range=[74.2:83.6]cm. Spatial resolution: 1.2 cm. The F-top wide-view poloidal array was installed and spatially calibrated. There are 19 chords intersect the beam at the major_R_range=[0.65:0.9.]m. Spatial resolution: 1.22 cm. Jul 09 2009 05:16PM (bespam) Bill Rowan Charge Exchange Spectroscopy bespam,blip,liao,rachmcd,rowan
D Alpha yes \ha2_bright is available; \SPECTROSCOPY::TOP.VUV.VIS_SIGNALS:MCP_VIS_SIG1 is not available Jul 01 2009 09:45AM (terry) Jim Terry Balmer Alpha Monitor irby,terry,wolfe
Dalsa yes system is aligned and operating; not yet calibrated Jul 14 2009 02:22PM (marmar) Earl Marmar Visible Bremsstrahlung marmar
Disruption Mitigation yes operational, but turned off Nov 03 2009 04:59PM (granetz) Robert Granetz Gas Jet granetz,whyte
Divertor IR no Mar 06 2007 10:50AM Glen Wurden Divertor IR Digital Video gwurden,terry
Divertor IR Spectroscopy no Mar 06 2007 10:51AM Glen Wurden Divertor IR Spectroscopy gwurden,terry
DNB no in test mode only Nov 03 2009 05:01PM (granetz) Robert Granetz Diagnostic Neutral Beam dterry,granetz,gung
ECDC yes Nov 09 2009 09:13AM (irby) Jim Irby 2.45 GHz, 3 kW, discharge cleaning system dekow,irby,pfeiffer
FRC-ECE yes All channels working and calibrated. Feb 02 2010 09:56AM (phillips) Perry Phillips Heterodyne ECE-32 channels phillips
G-Side Ratiomatic yes Gauge installed. Controller repaired. Aug 23 2009 10:36PM (toland) Brian LaBombard G-side ratiomatic ionization gauge labombard,toland
Glow Discharge no 6/10/09: Paddles meggered at 1000 v to machine ground (>300 Mohm) prior to closing the vacuum chamber. Plugs for Power Supply and Controls Unplugged and Red Tagged, Safe for In-Vessel Access Jun 10 2009 01:47PM (dekow) Jim Irby 1 kV, 5 A, glow discharge system dekow,dterry,irby
GPC yes Operational. Jul 28 2009 04:23PM (hubbard) Amanda Hubbard ECE Polychromater hubbard,schmidt
GPC2 yes Most channels operational. Jul 28 2009 04:23PM (hubbard) Amanda Hubbard ECE Polychromater hubbard,schmidt
GPI yes The Xpt-view, the midplane-view cameras are operational. The innerwall GPI (coupled to the fast-diodes) is available. Jul 01 2009 09:45AM (terry) Jim Terry Gas Puff Imaging terry,zweben
H/D yes poses no safety hazard for people working around the machine Jun 18 2009 01:04PM (marmar) Earl Marmar H/D Ratio marmar
HEAT yes Oct 27 2009 10:39AM (dekow) Gary Dekow - Machine Heaters - burke,dekow
Hirex Jr yes Hirex-Jr has been installed and tested Jun 17 2009 11:54AM (rice) John Rice High Resolution X-Ray ince,rice
Hirex Sr yes currently only one detector is operational, off-axis He-like argon emission Jul 14 2009 10:01AM (rice) John Rice High Resolution X-Ray ince,rice
HXR no In safe mode (high voltage turned off) May 27 2008 09:19PM (schmidt) Ron Parker Hard X-Ray Array parker,schmidt
ICRF D-Antenna yes operational at 80 MHz Jul 21 2009 04:49PM (wukitch) Steve Wukitch D-port antenna wukitch,ylin
ICRF E-Antenna yes antenna and FFT operational Jul 21 2009 04:49PM (wukitch) Steve Wukitch E-port antenna wukitch,ylin
ICRF J-Antenna yes available at 80 MHz and [0,pi,0,pi] phasing Sep 04 2009 10:01AM (wukitch) Steve Wukitch J-port antenna wukitch,ylin
Laser Blow-Off yes Requires some advance notice for laser start-up Oct 16 2009 12:46PM (g) Martin Greenwald Impurity Injection System g,nthoward
Lower Hybrid no Breaker locked and tagged out. Waveguide disassembly started. Open Waveguides have been shorted. May 28 2008 09:47AM (dterry) Ron Parker Lower Hybrid dterry,parker,wallaceg
LPI no Beam line removed May 30 2008 02:09PM (bose) Earl Marmar Lithium Pellet Injector bose,marmar
Ly-alpha yes Midplane, WB4-LY, LEDGE-LY all collecting data. WB1-LY not attached. Aug 27 2009 09:10AM (mlreinke) Matt Reinke Lyman alpha cameras labombard,mlreinke
McPherson yes Operating normally Aug 27 2009 09:10AM (mlreinke) Jim Terry VUV Spectrometer mlreinke,terry
Michelson yes Operational. Recalibrated 7/27/09. Jul 28 2009 04:22PM (hubbard) Amanda Hubbard ECE Te Profiles hubbard,schmidt
MKS yes Gauges are on. B-bottom is not operating - bad sensor head? Jul 14 2009 09:12PM (labombard) Brian LaBombard Baratron pressure gauges labombard
MLP no System is in edge lab. Version 2 drivers ready to test. Needs a student to help work on it. Jul 14 2009 09:20PM (labombard) Brian LaBombard Mirror Langmuir Probe Electronics System labombard
MSE no As of 6/10/09, MSE is calibrated & ready to go. Awaiting DNB. Jun 10 2009 10:34AM (sscott) Steve Scott Motional Stark Effect jinseok,sscott
Neutrons yes Neutron detectors are calibrated and ready to go. Voltages will be turned on prior to first plasma. Jun 10 2009 10:35AM (fiore) Catherine Fiore Neutron Detectors fiore
Neuts and Hards yes Power back on morning of 11/09 before run Nov 09 2009 09:10AM (irby) Jim Irby X-Ray/Neutron Detector at K-Hor irby
NINJA no Capillaries were tested in-vessel. Plenum has a leak and needs fixing. Jul 14 2009 09:14PM (labombard) Brian LaBombard NINJA gas puff labombard,terry
PCI yes Operational. Nov 12 2009 02:36PM (ntsujii) Miklos Porkolab Phase Contrast Imaging arai,ennever,ntsujii,porkolab
Penning Gauges yes High voltage is enabled (on during INIT, off during RECOOL). Jun 30 2009 09:42PM (labombard) Brian LaBombard Penning Ionization Gauges labombard
Plasma TV yes WIDE1, WIDE2 (chan 33), DANT, JANT and DIV are operational. Jul 01 2009 09:46AM (terry) Jim Terry Video of plasma via several cameras dekow,irby,terry,wolfe
Polarimeter no Safe for Machine Entry Sep 14 2007 12:17PM (irby) Jim Irby C-Mod Polarimeter irby
Power - Alternator Air Switch yes Checked and Operational as of 06/18/09 Jun 19 2009 08:04AM (irby) Gary Dekow feeds all the other supplies cochran,dekow,dterry,irby
Power - PEI yes Nov 13 2009 06:38AM (dekow) Gary Dekow PEI System cochran,dekow,dterry,irby
Power - TMX yes Checked out and ready for Magnet Tests as of 06/18/09 Jun 19 2009 08:07AM (irby) Gary Dekow Ef2s,. EFCs and A-Coils byford,cochran,dekow,dterry,irby
Power Systems yes Checked out and ready for Magnet Tests as of 06/18/09 Jun 19 2009 08:07AM (irby) Jim Irby C-Mod Magnet Supplies byford,cochran,dekow,dterry,irby
Probe Array - ISD yes Array is operational with new cPCI data system. Probe 14 has open circuit. Jul 14 2009 09:17PM (labombard) Brian Labombard Inner Lower Divertor Probe Array labombard
Probe Array - LH no LH launcher not installed. Cables are unplugged at the A-port rack. Jul 14 2009 09:16PM (labombard) Brian LaBombard Lower Hybrid Probe Array labombard
Probe Array - OSD yes Array is operational with new cPCI data system. Jul 14 2009 09:16PM (labombard) Brian LaBombard Outer Lower Divertor Probe Array labombard
Probe Array - UDIV yes Array is operational with new cPCI data system. Probe 13 has a bad cable (open). Jul 14 2009 09:17PM (labombard) Brian LaBombard Upper Divertor Probe Array labombard
Reflectometer yes Since 1100120000 the system is operational except for channel 110 which is not installed Jan 20 2010 09:17AM (dominguez) Earl Marmar Reflectometer dominguez,marmar
Scanning Probe - ASP yes Probe is operational. Needs plasma conditioning. Jul 14 2009 09:18PM (labombard) Brian LaBombard A-Port Scanning Probe labombard
Scanning Probe - FSP yes Probe is operational. Needs plasma conditioning. Jul 14 2009 09:18PM (labombard) Brian LaBombard F-Port Scanning Probe labombard
Scanning Probe - WASP yes System connected to A-port WASP. Needs plasma testing. Jul 14 2009 09:19PM (labombard) Brian LaBombard Inner Wall Scanning Probe labombard,nsmick
Sparker yes Sparker back in operation before 11/09 run Nov 09 2009 09:11AM (irby) Jim Irby Field Emission Preionization for C-Mod dekow,irby,parkin
TCI yes System restarted and aligned. Several chords available including NL04. Density Feedback available. Ready for plasma. Jun 18 2009 09:15AM (murray) Jim Irby Two-Color Interferometer irby,murray
TS - Core yes 2 lasers working. 15 spatial channels operational. Calibrated Oct 13 2009 07:49PM (yma) Jerry Hughes Core Thomson scattering jwhughes,yma,zhang
TS - Edge yes Operational, and calibrated. Oct 11 2009 03:01PM (jwhughes) Jerry Hughes Millimeter resolution edge Thomson scattering jwhughes,yma,zhang
Vispec no 350 and 670 nm, 4 spatial channels Nov 28 2007 09:58AM (agraf) Alex Graf Visible Spectrometer agraf
XTOMO yes Operating normally Aug 27 2009 09:10AM (mlreinke) Bob Granetz X-Ray Tomography granetz,mlreinke

Feb 10 2010 04:32:03:360PM

System Available Comment Availability
Changed Owner Description Who Can
Change
Active MHD no secured - tagged out Jun 02 2008 11:03AM (sears) Joe Snipes Active MHD Antenna sears,snipes
BES yes 7 horizontal views spread out R_maj=[0.72-0.9m], 3 cm over the tokamak midplane (beam) Jul 09 2009 05:12PM (bespam) Bill Rowan Beam Emission Spectroscopy bespam,liao,rowan
Bolometers yes 2pi (diode+foil), AXA, AXJ, WB3AX, WB4AX, LEDGE-AX working fine. MID-FOILS working fine. The LEDGE/DIV foils still need calibrations applied Aug 27 2009 09:09AM (mlreinke) Matt Reinke Bolometers hutch,mlreinke
Boronization yes Nov 13 2009 06:37AM (dekow) Jim Irby Boronization dekow,irby
CNPA no Single channel CNPA available as of 12/1707 Jun 10 2009 10:22AM (twf) Ron Parker Compact Neutral Analyzer parker
Cryopump - Upper Divertor yes Operational Nov 09 2009 09:12AM (irby) Brian LaBombard Upper Divertor Cryopump irby,labombard
CXRS yes The wide-view toroidal array was installed, spatially and absolutely calibrated. There are 7 toroidal chords intersect the beam at the major_R_range=[74.2:83.6]cm. Spatial resolution: 1.2 cm. The F-top wide-view poloidal array was installed and spatially calibrated. There are 19 chords intersect the beam at the major_R_range=[0.65:0.9.]m. Spatial resolution: 1.22 cm. Jul 09 2009 05:16PM (bespam) Bill Rowan Charge Exchange Spectroscopy bespam,blip,liao,rachmcd,rowan
D Alpha yes \ha2_bright is available; \SPECTROSCOPY::TOP.VUV.VIS_SIGNALS:MCP_VIS_SIG1 is not available Jul 01 2009 09:45AM (terry) Jim Terry Balmer Alpha Monitor irby,terry,wolfe
Dalsa yes system is aligned and operating; not yet calibrated Jul 14 2009 02:22PM (marmar) Earl Marmar Visible Bremsstrahlung marmar
Disruption Mitigation yes operational, but turned off Nov 03 2009 04:59PM (granetz) Robert Granetz Gas Jet granetz,whyte
Divertor IR no Mar 06 2007 10:50AM Glen Wurden Divertor IR Digital Video gwurden,terry
Divertor IR Spectroscopy no Mar 06 2007 10:51AM Glen Wurden Divertor IR Spectroscopy gwurden,terry
DNB no in test mode only Nov 03 2009 05:01PM (granetz) Robert Granetz Diagnostic Neutral Beam dterry,granetz,gung
ECDC yes Nov 09 2009 09:13AM (irby) Jim Irby 2.45 GHz, 3 kW, discharge cleaning system dekow,irby,pfeiffer
FRC-ECE yes All channels working and calibrated. Feb 02 2010 09:56AM (phillips) Perry Phillips Heterodyne ECE-32 channels phillips
G-Side Ratiomatic yes Gauge installed. Controller repaired. Aug 23 2009 10:36PM (toland) Brian LaBombard G-side ratiomatic ionization gauge labombard,toland
Glow Discharge no 6/10/09: Paddles meggered at 1000 v to machine ground (>300 Mohm) prior to closing the vacuum chamber. Plugs for Power Supply and Controls Unplugged and Red Tagged, Safe for In-Vessel Access Jun 10 2009 01:47PM (dekow) Jim Irby 1 kV, 5 A, glow discharge system dekow,dterry,irby
GPC yes Operational. Jul 28 2009 04:23PM (hubbard) Amanda Hubbard ECE Polychromater hubbard,schmidt
GPC2 yes Most channels operational. Jul 28 2009 04:23PM (hubbard) Amanda Hubbard ECE Polychromater hubbard,schmidt
GPI yes The Xpt-view, the midplane-view cameras are operational. The innerwall GPI (coupled to the fast-diodes) is available. Jul 01 2009 09:45AM (terry) Jim Terry Gas Puff Imaging terry,zweben
H/D yes poses no safety hazard for people working around the machine Jun 18 2009 01:04PM (marmar) Earl Marmar H/D Ratio marmar
HEAT yes Oct 27 2009 10:39AM (dekow) Gary Dekow - Machine Heaters - burke,dekow
Hirex Jr yes Hirex-Jr has been installed and tested Jun 17 2009 11:54AM (rice) John Rice High Resolution X-Ray ince,rice
Hirex Sr yes currently only one detector is operational, off-axis He-like argon emission Jul 14 2009 10:01AM (rice) John Rice High Resolution X-Ray ince,rice
HXR no In safe mode (high voltage turned off) May 27 2008 09:19PM (schmidt) Ron Parker Hard X-Ray Array parker,schmidt
ICRF D-Antenna yes operational at 80 MHz Jul 21 2009 04:49PM (wukitch) Steve Wukitch D-port antenna wukitch,ylin
ICRF E-Antenna yes antenna and FFT operational Jul 21 2009 04:49PM (wukitch) Steve Wukitch E-port antenna wukitch,ylin
ICRF J-Antenna yes available at 80 MHz and [0,pi,0,pi] phasing Sep 04 2009 10:01AM (wukitch) Steve Wukitch J-port antenna wukitch,ylin
Laser Blow-Off yes Requires some advance notice for laser start-up Oct 16 2009 12:46PM (g) Martin Greenwald Impurity Injection System g,nthoward
Lower Hybrid no Breaker locked and tagged out. Waveguide disassembly started. Open Waveguides have been shorted. May 28 2008 09:47AM (dterry) Ron Parker Lower Hybrid dterry,parker,wallaceg
LPI no Beam line removed May 30 2008 02:09PM (bose) Earl Marmar Lithium Pellet Injector bose,marmar
Ly-alpha yes Midplane, WB4-LY, LEDGE-LY all collecting data. WB1-LY not attached. Aug 27 2009 09:10AM (mlreinke) Matt Reinke Lyman alpha cameras labombard,mlreinke
McPherson yes Operating normally Aug 27 2009 09:10AM (mlreinke) Jim Terry VUV Spectrometer mlreinke,terry
Michelson yes Operational. Recalibrated 7/27/09. Jul 28 2009 04:22PM (hubbard) Amanda Hubbard ECE Te Profiles hubbard,schmidt
MKS yes Gauges are on. B-bottom is not operating - bad sensor head? Jul 14 2009 09:12PM (labombard) Brian LaBombard Baratron pressure gauges labombard
MLP no System is in edge lab. Version 2 drivers ready to test. Needs a student to help work on it. Jul 14 2009 09:20PM (labombard) Brian LaBombard Mirror Langmuir Probe Electronics System labombard
MSE no As of 6/10/09, MSE is calibrated & ready to go. Awaiting DNB. Jun 10 2009 10:34AM (sscott) Steve Scott Motional Stark Effect jinseok,sscott
Neutrons yes Neutron detectors are calibrated and ready to go. Voltages will be turned on prior to first plasma. Jun 10 2009 10:35AM (fiore) Catherine Fiore Neutron Detectors fiore
Neuts and Hards yes Power back on morning of 11/09 before run Nov 09 2009 09:10AM (irby) Jim Irby X-Ray/Neutron Detector at K-Hor irby
NINJA no Capillaries were tested in-vessel. Plenum has a leak and needs fixing. Jul 14 2009 09:14PM (labombard) Brian LaBombard NINJA gas puff labombard,terry
PCI yes Operational. Nov 12 2009 02:36PM (ntsujii) Miklos Porkolab Phase Contrast Imaging arai,ennever,ntsujii,porkolab
Penning Gauges yes High voltage is enabled (on during INIT, off during RECOOL). Jun 30 2009 09:42PM (labombard) Brian LaBombard Penning Ionization Gauges labombard
Plasma TV yes WIDE1, WIDE2 (chan 33), DANT, JANT and DIV are operational. Jul 01 2009 09:46AM (terry) Jim Terry Video of plasma via several cameras dekow,irby,terry,wolfe
Polarimeter no Safe for Machine Entry Sep 14 2007 12:17PM (irby) Jim Irby C-Mod Polarimeter irby
Power - Alternator Air Switch yes Checked and Operational as of 06/18/09 Jun 19 2009 08:04AM (irby) Gary Dekow feeds all the other supplies cochran,dekow,dterry,irby
Power - PEI yes Nov 13 2009 06:38AM (dekow) Gary Dekow PEI System cochran,dekow,dterry,irby
Power - TMX yes Checked out and ready for Magnet Tests as of 06/18/09 Jun 19 2009 08:07AM (irby) Gary Dekow Ef2s,. EFCs and A-Coils byford,cochran,dekow,dterry,irby
Power Systems yes Checked out and ready for Magnet Tests as of 06/18/09 Jun 19 2009 08:07AM (irby) Jim Irby C-Mod Magnet Supplies byford,cochran,dekow,dterry,irby
Probe Array - ISD yes Array is operational with new cPCI data system. Probe 14 has open circuit. Jul 14 2009 09:17PM (labombard) Brian Labombard Inner Lower Divertor Probe Array labombard
Probe Array - LH no LH launcher not installed. Cables are unplugged at the A-port rack. Jul 14 2009 09:16PM (labombard) Brian LaBombard Lower Hybrid Probe Array labombard
Probe Array - OSD yes Array is operational with new cPCI data system. Jul 14 2009 09:16PM (labombard) Brian LaBombard Outer Lower Divertor Probe Array labombard
Probe Array - UDIV yes Array is operational with new cPCI data system. Probe 13 has a bad cable (open). Jul 14 2009 09:17PM (labombard) Brian LaBombard Upper Divertor Probe Array labombard
Reflectometer yes Since 1100120000 the system is operational except for channel 110 which is not installed Jan 20 2010 09:17AM (dominguez) Earl Marmar Reflectometer dominguez,marmar
Scanning Probe - ASP yes Probe is operational. Needs plasma conditioning. Jul 14 2009 09:18PM (labombard) Brian LaBombard A-Port Scanning Probe labombard
Scanning Probe - FSP yes Probe is operational. Needs plasma conditioning. Jul 14 2009 09:18PM (labombard) Brian LaBombard F-Port Scanning Probe labombard
Scanning Probe - WASP yes System connected to A-port WASP. Needs plasma testing. Jul 14 2009 09:19PM (labombard) Brian LaBombard Inner Wall Scanning Probe labombard,nsmick
Sparker yes Sparker back in operation before 11/09 run Nov 09 2009 09:11AM (irby) Jim Irby Field Emission Preionization for C-Mod dekow,irby,parkin
TCI yes System restarted and aligned. Several chords available including NL04. Density Feedback available. Ready for plasma. Jun 18 2009 09:15AM (murray) Jim Irby Two-Color Interferometer irby,murray
TS - Core yes 2 lasers working. 15 spatial channels operational. Calibrated Oct 13 2009 07:49PM (yma) Jerry Hughes Core Thomson scattering jwhughes,yma,zhang
TS - Edge yes Operational, and calibrated. Oct 11 2009 03:01PM (jwhughes) Jerry Hughes Millimeter resolution edge Thomson scattering jwhughes,yma,zhang
Vispec no 350 and 670 nm, 4 spatial channels Nov 28 2007 09:58AM (agraf) Alex Graf Visible Spectrometer agraf
XTOMO yes Operating normally Aug 27 2009 09:10AM (mlreinke) Bob Granetz X-Ray Tomography granetz,mlreinke

Feb 10 2010 04:51:32:083PM

System Available Comment Availability
Changed Owner Description Who Can
Change
Active MHD no secured - tagged out Jun 02 2008 11:03AM (sears) Joe Snipes Active MHD Antenna sears,snipes
BES yes 7 horizontal views spread out R_maj=[0.72-0.9m], 3 cm over the tokamak midplane (beam) Jul 09 2009 05:12PM (bespam) Bill Rowan Beam Emission Spectroscopy bespam,liao,rowan
Bolometers yes 2pi (diode+foil), AXA, AXJ, WB3AX, WB4AX, LEDGE-AX working fine. MID-FOILS working fine. The LEDGE/DIV foils still need calibrations applied Aug 27 2009 09:09AM (mlreinke) Matt Reinke Bolometers hutch,mlreinke
Boronization yes Nov 13 2009 06:37AM (dekow) Jim Irby Boronization dekow,irby
CNPA no Single channel CNPA available as of 12/1707 Jun 10 2009 10:22AM (twf) Ron Parker Compact Neutral Analyzer parker
Cryopump - Upper Divertor yes Operational Nov 09 2009 09:12AM (irby) Brian LaBombard Upper Divertor Cryopump irby,labombard
CXRS yes The wide-view toroidal array was installed, spatially and absolutely calibrated. There are 7 toroidal chords intersect the beam at the major_R_range=[74.2:83.6]cm. Spatial resolution: 1.2 cm. The F-top wide-view poloidal array was installed and spatially calibrated. There are 19 chords intersect the beam at the major_R_range=[0.65:0.9.]m. Spatial resolution: 1.22 cm. Jul 09 2009 05:16PM (bespam) Bill Rowan Charge Exchange Spectroscopy bespam,blip,liao,rachmcd,rowan
D Alpha yes \ha2_bright is available; \SPECTROSCOPY::TOP.VUV.VIS_SIGNALS:MCP_VIS_SIG1 is not available Jul 01 2009 09:45AM (terry) Jim Terry Balmer Alpha Monitor irby,terry,wolfe
Dalsa yes system is aligned and operating; not yet calibrated Jul 14 2009 02:22PM (marmar) Earl Marmar Visible Bremsstrahlung marmar
Disruption Mitigation yes operational, but turned off Nov 03 2009 04:59PM (granetz) Robert Granetz Gas Jet granetz,whyte
Divertor IR no Mar 06 2007 10:50AM Glen Wurden Divertor IR Digital Video gwurden,terry
Divertor IR Spectroscopy no Mar 06 2007 10:51AM Glen Wurden Divertor IR Spectroscopy gwurden,terry
DNB no in test mode only Nov 03 2009 05:01PM (granetz) Robert Granetz Diagnostic Neutral Beam dterry,granetz,gung
ECDC yes Nov 09 2009 09:13AM (irby) Jim Irby 2.45 GHz, 3 kW, discharge cleaning system dekow,irby,pfeiffer
FRC-ECE yes All channels working and calibrated. Feb 02 2010 09:56AM (phillips) Perry Phillips Heterodyne ECE-32 channels phillips
G-Side Ratiomatic yes Gauge installed. Controller repaired. Aug 23 2009 10:36PM (toland) Brian LaBombard G-side ratiomatic ionization gauge labombard,toland
Glow Discharge no 6/10/09: Paddles meggered at 1000 v to machine ground (>300 Mohm) prior to closing the vacuum chamber. Plugs for Power Supply and Controls Unplugged and Red Tagged, Safe for In-Vessel Access Jun 10 2009 01:47PM (dekow) Jim Irby 1 kV, 5 A, glow discharge system dekow,dterry,irby
GPC yes Operational. Jul 28 2009 04:23PM (hubbard) Amanda Hubbard ECE Polychromater hubbard,schmidt
GPC2 yes Most channels operational. Jul 28 2009 04:23PM (hubbard) Amanda Hubbard ECE Polychromater hubbard,schmidt
GPI yes The Xpt-view, the midplane-view cameras are operational. The innerwall GPI (coupled to the fast-diodes) is available. Jul 01 2009 09:45AM (terry) Jim Terry Gas Puff Imaging terry,zweben
H/D yes poses no safety hazard for people working around the machine Jun 18 2009 01:04PM (marmar) Earl Marmar H/D Ratio marmar
HEAT yes Oct 27 2009 10:39AM (dekow) Gary Dekow - Machine Heaters - burke,dekow
Hirex Jr yes Hirex-Jr has been installed and tested Jun 17 2009 11:54AM (rice) John Rice High Resolution X-Ray ince,rice
Hirex Sr yes currently only one detector is operational, off-axis He-like argon emission Jul 14 2009 10:01AM (rice) John Rice High Resolution X-Ray ince,rice
HXR no In safe mode (high voltage turned off) May 27 2008 09:19PM (schmidt) Ron Parker Hard X-Ray Array parker,schmidt
ICRF D-Antenna yes operational at 80 MHz Jul 21 2009 04:49PM (wukitch) Steve Wukitch D-port antenna wukitch,ylin
ICRF E-Antenna yes antenna and FFT operational Jul 21 2009 04:49PM (wukitch) Steve Wukitch E-port antenna wukitch,ylin
ICRF J-Antenna yes available at 80 MHz and [0,pi,0,pi] phasing Sep 04 2009 10:01AM (wukitch) Steve Wukitch J-port antenna wukitch,ylin
Laser Blow-Off yes Requires some advance notice for laser start-up Oct 16 2009 12:46PM (g) Martin Greenwald Impurity Injection System g,nthoward
Lower Hybrid no Breaker locked and tagged out. Waveguide disassembly started. Open Waveguides have been shorted. May 28 2008 09:47AM (dterry) Ron Parker Lower Hybrid dterry,parker,wallaceg
LPI no Beam line removed May 30 2008 02:09PM (bose) Earl Marmar Lithium Pellet Injector bose,marmar
Ly-alpha yes Midplane, WB4-LY, LEDGE-LY all collecting data. WB1-LY not attached. Aug 27 2009 09:10AM (mlreinke) Matt Reinke Lyman alpha cameras labombard,mlreinke
McPherson yes Operating normally Aug 27 2009 09:10AM (mlreinke) Jim Terry VUV Spectrometer mlreinke,terry
Michelson yes Operational. Recalibrated 7/27/09. Jul 28 2009 04:22PM (hubbard) Amanda Hubbard ECE Te Profiles hubbard,schmidt
MKS yes Gauges are on. B-bottom is not operating - bad sensor head? Jul 14 2009 09:12PM (labombard) Brian LaBombard Baratron pressure gauges labombard
MLP no System is in edge lab. Version 2 drivers ready to test. Needs a student to help work on it. Jul 14 2009 09:20PM (labombard) Brian LaBombard Mirror Langmuir Probe Electronics System labombard
MSE no As of 6/10/09, MSE is calibrated & ready to go. Awaiting DNB. Jun 10 2009 10:34AM (sscott) Steve Scott Motional Stark Effect jinseok,sscott
Neutrons yes Neutron detectors are calibrated and ready to go. Voltages will be turned on prior to first plasma. Jun 10 2009 10:35AM (fiore) Catherine Fiore Neutron Detectors fiore
Neuts and Hards yes Power back on morning of 11/09 before run Nov 09 2009 09:10AM (irby) Jim Irby X-Ray/Neutron Detector at K-Hor irby
NINJA no Capillaries were tested in-vessel. Plenum has a leak and needs fixing. Jul 14 2009 09:14PM (labombard) Brian LaBombard NINJA gas puff labombard,terry
PCI yes Operational. Nov 12 2009 02:36PM (ntsujii) Miklos Porkolab Phase Contrast Imaging arai,ennever,ntsujii,porkolab
Penning Gauges yes High voltage is enabled (on during INIT, off during RECOOL). Jun 30 2009 09:42PM (labombard) Brian LaBombard Penning Ionization Gauges labombard
Plasma TV yes WIDE1, WIDE2 (chan 33), DANT, JANT and DIV are operational. Jul 01 2009 09:46AM (terry) Jim Terry Video of plasma via several cameras dekow,irby,terry,wolfe
Polarimeter no Safe for Machine Entry Sep 14 2007 12:17PM (irby) Jim Irby C-Mod Polarimeter irby
Power - Alternator Air Switch yes Checked and Operational as of 06/18/09 Jun 19 2009 08:04AM (irby) Gary Dekow feeds all the other supplies cochran,dekow,dterry,irby
Power - PEI yes Nov 13 2009 06:38AM (dekow) Gary Dekow PEI System cochran,dekow,dterry,irby
Power - TMX yes Checked out and ready for Magnet Tests as of 06/18/09 Jun 19 2009 08:07AM (irby) Gary Dekow Ef2s,. EFCs and A-Coils byford,cochran,dekow,dterry,irby
Power Systems yes Checked out and ready for Magnet Tests as of 06/18/09 Jun 19 2009 08:07AM (irby) Jim Irby C-Mod Magnet Supplies byford,cochran,dekow,dterry,irby
Probe Array - ISD yes Array is operational with new cPCI data system. Probe 14 has open circuit. Jul 14 2009 09:17PM (labombard) Brian Labombard Inner Lower Divertor Probe Array labombard
Probe Array - LH no LH launcher not installed. Cables are unplugged at the A-port rack. Jul 14 2009 09:16PM (labombard) Brian LaBombard Lower Hybrid Probe Array labombard
Probe Array - OSD yes Array is operational with new cPCI data system. Jul 14 2009 09:16PM (labombard) Brian LaBombard Outer Lower Divertor Probe Array labombard
Probe Array - UDIV yes Array is operational with new cPCI data system. Probe 13 has a bad cable (open). Jul 14 2009 09:17PM (labombard) Brian LaBombard Upper Divertor Probe Array labombard
Reflectometer yes Since 1100120000 the system is operational except for channel 110 which is not installed Jan 20 2010 09:17AM (dominguez) Earl Marmar Reflectometer dominguez,marmar
Scanning Probe - ASP yes Probe is operational. Needs plasma conditioning. Jul 14 2009 09:18PM (labombard) Brian LaBombard A-Port Scanning Probe labombard
Scanning Probe - FSP yes Probe is operational. Needs plasma conditioning. Jul 14 2009 09:18PM (labombard) Brian LaBombard F-Port Scanning Probe labombard
Scanning Probe - WASP yes System connected to A-port WASP. Needs plasma testing. Jul 14 2009 09:19PM (labombard) Brian LaBombard Inner Wall Scanning Probe labombard,nsmick
Sparker yes Sparker back in operation before 11/09 run Nov 09 2009 09:11AM (irby) Jim Irby Field Emission Preionization for C-Mod dekow,irby,parkin
TCI yes System restarted and aligned. Several chords available including NL04. Density Feedback available. Ready for plasma. Jun 18 2009 09:15AM (murray) Jim Irby Two-Color Interferometer irby,murray
TS - Core yes 2 lasers working. 15 spatial channels operational. Calibrated Oct 13 2009 07:49PM (yma) Jerry Hughes Core Thomson scattering jwhughes,yma,zhang
TS - Edge yes Operational, and calibrated. Oct 11 2009 03:01PM (jwhughes) Jerry Hughes Millimeter resolution edge Thomson scattering jwhughes,yma,zhang
Vispec no 350 and 670 nm, 4 spatial channels Nov 28 2007 09:58AM (agraf) Alex Graf Visible Spectrometer agraf
XTOMO yes Operating normally Aug 27 2009 09:10AM (mlreinke) Bob Granetz X-Ray Tomography granetz,mlreinke

Session Leader Comments
Feb 10 2010 09:04:52:270AM	1100210001	Yijun Lin	6.5 T, 1 MA, nl = 0.7e20 m^-2. full length. good shot. Helium monitor baseline 0.008. No RF. Next: higher field.
Feb 10 2010 09:29:19:383AM	1100210002	Yijun Lin	7.0 T, 1 MA, nl = 0.7e20 m^-2. ne0 = 2e20, Te0 = 2.1 keV, Helium 0.008. plasma full length. No RF. Next: higher field to 7.5 T.
Feb 10 2010 10:15:10:747AM	1100210003	Yijun Lin	Trying to get 7.5 T. TF faults (6 blown fuses...). Bt only to 7.1 T at t = -0.06 sec. plasma to 0.72 sec.
Feb 10 2010 11:32:03:363AM	1100210004	Yijun Lin	TF test 3.5 T. good. Checking the calibration of one of the IOC indicators. Fine. Next: 7.5 T. Try plasma Also run RF power, 3 steps. 50 ms He3 from t = 0.2 sec.
Feb 10 2010 11:50:06:480AM	1100210005	Yijun Lin	7.5 T. 1 MA. Good. No RF due to control system problem. 50 ms He3 --> 0.017 in He monitor. Next: 8.0 T, and with RF.
Feb 10 2010 12:07:47:780PM	1100210006	Yijun Lin	8.0 T, 1 MA, nl04 0.7, He3 50 ms, te0 = 4, ne0 = 2.2 50 ms He3. He monitor 0.02. Hirex DV [km/s] 75 MCFD scaling: 160 Rice scaling: 75 This is supposed to be minority heating. So no surprise? (following the Rice scaling...) (Decent minority heating. Longer sawtooth, and high Te...) Next: 100 ms He3, and see whether we can get larger rotation (this is a crucial test...) W injection at 1.3 sec.
Feb 10 2010 12:39:30:510PM	1100210007	Yijun Lin	8.0 T, 1 MA, USN, nl0 = 0.7, te0 = 5, ne0 = 2.2 100 ms He3. He monitor 0.05 Hirex DV [km/s] : 80. Rice scaling [km/s]: 70 Not much different from the intrinsic rotation scaling, but below the MCFD scaling from 5.1 T. MC waves seen in PCI at R=66-67 cm. Knobs to try: ne, ip, he3. next: try the same He3, lower density to 0.5. Also lengthen the RF pulse from (0.6-1.3 sec).
Feb 10 2010 01:00:18:837PM	1100210008	Yijun Lin	8.0 T, 1 MA, USN, nl0 = 0.5, te0 = 5, ne0 = 1.8 100 ms He3. He monitor 0.02 at 1 sec. Hirex DV [km/s] : 80. did not increase at the last step of RF but Stored energy did increase a lot. Rice scaling [km/s]: 110 Comparing the 3.2 MW Step, this shot has a much large rotation than shot 6. (But it did not increase later. Does it mean He3 has been depleted...?) (Was the cryopump getting rid of the He3?) next: Try He3 puff 200 ms. Other parameters the same.
Feb 10 2010 01:57:23:120PM	1100210009	Yijun Lin	8.0 T, 1 MA, USN, nl0 = 0.7, te0 = 4.5, ne0 = 1.8. Disrupted @ 1.1 sec. TF crowbar (it seems caused by a breaker-opening in alternator) 200 ms He3. He monitor 0.05 at 1 sec, 0.07 @ 0.8 sec. Hirex DV [km/s] : 95. Rice scaling [km/s]: 75. Comparing the 3.2 MW Step, this shot has smaller rotation than shot 8. Rotation still goes up at the 4.8 MW step, but disrupted shortly after. I think the He3 level is too high at the beginning of the RF pulse, but it may be just right later. I suspect He3 monitor signal = 0.04 is the optimal one. next: 150 ms He3. keep other parameters the same.
Feb 10 2010 02:42:01:847PM	1100210011	Yijun Lin	Early disruption. Before RF.
Feb 10 2010 03:40:04:677PM	1100210012	Yijun Lin	8.0 T, 1 MA, USN, nl0 = 0.5, te0 = 7 keV, ne0 = 1.8. Disrupted @ 1.1 sec. (Hottest C-Mod plasma? GPC saturated...) (9 keV Ti from Fiore?) 150 ms He3. He monitor 0.05 at 1 sec, 0.07 @ 0.8 sec. Hirex DV [km/s] : (Too little signal in Ar line. (John said argon are burned out). Mo line gives about 70 km/s Rice scaling [km/s]: DW = 110 next: 150 ms He3. 1.2 MA.
Feb 10 2010 03:43:23:383PM	1100210013	Yijun Lin	8.0 T, 1.2 MA, USN, nl0 = 0.5, te0 = 7 keV, ne0 = 1.8. 150 ms He3. He monitor 0.05 at 1 sec, 0.07 @ 0.8 sec. Hirex DV [km/s] : Mo line about 80 km/s. Argon line to 90 km/s, but not reliable. (more Ar next shot). Rice scaling [km/s]: DW = 120, dw/Ip = 100. next: 150 ms He3. 1.2 MA. 7.8 T. In this way, the MC will occur more off-axis. Better for MC ICW, check it out.
Feb 10 2010 04:17:30:907PM	1100210014	Yijun Lin	7.8 T, 1 .2MA, USN, nl0 = 0.5, te0 = 5 keV, ne0 = 1.5 150 ms He3. He monitor 0.05 at 1 sec, 0.07 @ 0.8 sec. No power from D port, so the RF power is lower. PCI Mode conversion at R <= 65 cm. (following the change of Bt) J port 78 MHz MC is on axis. Hirex DV [km/s] : Mo line about 70 km/s. (3 MW) Rice scaling [km/s]: DW = 76, dw/Ip = 63. next: repeat
Feb 10 2010 04:15:00:563PM	1100210015	Yijun Lin	fizzle.
Feb 10 2010 04:35:11:177PM	1100210016	Yijun Lin	fizzle.

Physics Operator Comments
Feb 10 2010 07:16:43:307AM		Steve Wolfe	Set up for 1100210 load from 1091204004 ; Import seg1 from 1100205017 In seg1: Note rcur offset=2500 BR_0 offset=.0005 IC_EF1U=IC_EF1L=-5900 IC_EF4= -1300 Change TF waveform to start -1.5, value=-180000, invert at 1.3sec PG4 from 31 to 50msec (at -.3sec) In seg2: V#1-16 Copy TF_CUR from seg1 PG2 (b-side upper) He3 waveform from .2 to .25 (for later) PG1 (b-side lower Ar waveform from .3 to .35 (was .375) All_P: Nl04 from 9e19 to 7e19, ramp-down at 1.3sec Ip rampdown from 1.3sec IC_EF4 rampdown to 1.3sec leave ZCUR, clearin, xpts as is. Load at 10-Feb-2010 07:16:29.00 Open tree /home/wolfe/pcs_scratch -1 Open tree done
Feb 10 2010 07:56:01:237AM		Steve Wolfe	According to IHH log entry for 1090903, the magic values for change in EF1 and EF4 current are : dEF1/dTF = 2.46 A/kA dEF4/dTF = 0.59 A/kA. The example shot from 1060706010 has TF=198kA at t=0, so a delta of 48kA would mean dEF1 = 118A, dEF4=28A. => EF1 from -5900 to -5780, EF4 from -1300 to -1272 For first shot TF=-180kA, change the EF1 settings from -5900 to -5830, leave EF4 at -1300; note RRP was running all day yesterday with EF4=-1315 Load at 10-Feb-2010 07:55:33.00 Open tree /home/wolfe/pcs_scratch -1 Open tree done
Feb 10 2010 09:04:25:427AM	1100210001	Steve Wolfe	Shot#1: Program 6.5T plasma full length, 6.47T looks good. Next: up to 7.0T
Feb 10 2010 09:27:57:007AM	1100210002	Steve Wolfe	Shot#2: up to 7.0T TF to -195000 , ENG limit to 205kA EF1 to -5790, EF4 to -1280 increase argon puff to 80msec Load at 10-Feb-2010 09:12:48.00 Open tree /home/wolfe/pcs_scratch -1 Open tree done plasma full length, 7.0T bd looks ok. Could use a little more gas? alternator rpm dips only to 1550 Next: Up to 7.5T
Feb 10 2010 10:05:06:047AM	1100210003	Steve Wolfe	Shot#3: Up to 7.5T TF to -208000 (eng limit to -215) Reduce pg3 in seg1 pg4 from 50 to 55msec Leave EF1 and EF4 as is, see how much higher TF actually gets at t=0 Seg2: add 50msec Ar puff (PG1) at 0.85sec Load at 10-Feb-2010 09:35:59.00 Open tree /home/wolfe/pcs_scratch -1 Open tree done Imp inj will pulse at 1.6sec TF crowbar, loud thump. Alternator fault. plasma started ok, disrupts at .71sec. TF crowbar near t=0, actually -.07sec; BT gets just t0 7.0T, same max current as on #2. Faults on alternator due to stator unloading on the crowbar. Crowbar seems to be due to IOC? There is an oscillation on current in cabinet 3. Alt varistor current to 700A at ~+.06sec Fuse checks, etc. in progress. Some delay expected.
Feb 10 2010 11:07:12:337AM	1100210004	Steve Wolfe	Shot#4: TF test under PLC control (100kA) Test looks ok. There will be a short delay while an IOC calibration in TF#2 is checked.
Feb 10 2010 11:38:21:247AM	1100210005	Steve Wolfe	Shot#5: Second try at 7.5T. No PCS changes from #3 RF will fire, enable B-side upper. plasma full length. 7.43T, got all the puffs, no rf? Alternator rpm down to 1537, no obvious vibration problem Next: Up to 8T
Feb 10 2010 12:18:07:887PM	1100210006	Steve Wolfe	Shot#6: Up to 8T TF limit to 235 TF prog to -224000 No other seg1 changes ImpIng will move to 1.5sec, still in rampdown Load at 10-Feb-2010 11:42:25.00 Open tree /home/wolfe/pcs_scratch -1 Open tree done plasma full length, injection in flattop, .87 sec Looks like we got RF, neuts to 6e13 level Btor=7.96T. Alt rpm drops to 1525. Everything looks ok. Actually three IOC's came up on the TF at 4.35sec, after all the current was out of the supplies. No problems or explanation found. Next: He3 puff to 100msec
Feb 10 2010 12:28:36:507PM	1100210007	Steve Wolfe	Shot#7: He3 puff to 100msec, we're into the SL's program (2b) ImpInj moving to 1.3sec NINJA is going to puff at 1.35 (inner wall) Note that on #6 EF2L was running around -5000A, close to its rail; may want to push EF2byEF4 or IC_EF4 a bit more positive, but hold off for now. Note EF2byEF4 is presently at -2500. plasma full length, runaways early, no bounce in startup Breakers pulled after shot again, but no IOC, just came up Type2 fault Next: increase pg4, probably change He3 puff
Feb 10 2010 12:51:00:613PM	1100210008	Steve Wolfe	Shot#8: increase pg4 from 55 to 60msec, Lower nl04 from 7 to 5e19, decrease seg2 pg3 from 20 to 0 note nl04 PID=[5,2,6] Leave He3 at 100msec. Load at 10-Feb-2010 12:35:18.00 Open tree /home/wolfe/pcs_scratch -1 Open tree done plasma full length, still has runaways, breakers opened after the shot again; Bill suspects backup timer causing anonymous type 2 fault. Density did not come down much, looks like the RF is making its own. Neuts close to 1e14 Next: increase pg4 a bit more, see what Yijun wants
Feb 10 2010 01:20:42:487PM	1100210009	Steve Wolfe	Shot#9: increase pg4 from 60 to 67 msec, IC_EF4 from -1280 to -1270 (two startup changes at once!) He3 puff from 100 to 200ms (0.2:0.4sec) Load at 10-Feb-2010 12:58:00.00 Open tree /home/wolfe/pcs_scratch -1 Open tree done Bill and Bill have extended the backup timer to 7sec (was 6) to try to eliminate Type2 fault at end of pulse. Plasma, still runaways worse than last one Disrupts at 1.15sec, TF crowbar after the disruption, at 2.06sec Disruption looks like a killer injection. Matt says Mo
Feb 10 2010 02:21:11:137PM	1100210010	Steve Wolfe	Shot#10: Increase PG3 puff in seg1 He3 puff from 200 to 150msec Going to increase the wait time between shots, because TF is warming up. Need to finish checking the TF supplies anyway this time. Load at 10-Feb-2010 13:28:16.00 Open tree /home/wolfe/pcs_scratch -1 Open tree done Long discussion about what happened on the crowbar. It seems a DC breaker opened at the alternator at 1.35sec, causing loss of excitation and showing 1.5kA of varistor current. The subsequent drop in alternator voltage caused low-line fault resulting in TF crowbar at 2.05sec. Mike is checking whether a setpoint on a mechanical breaker at the alternator is responsible for the trip. Plasma full length, but breakers pulled after the shot, no crowbar. No runaways, No RF. Large injection on Zmeter at 22msec, not seen on Halpha. Injections on bolo at .42 and 1.2sec. Nl04 nice at 5e19.
Feb 10 2010 02:50:20:717PM	1100210011	Steve Wolfe	Shot#11: Add pg3 puff from .35 to .45sec to reduce drop in density at divert time Early disruption, .17sec, runaways in startup again. No faults from TF or alternator this time. No bounce in startup. Big vertical thrash before it disrupts, it's been doing that to some extent. Next: tweak BR_0
Feb 10 2010 03:08:45:750PM	1100210012	Steve Wolfe	Shot#12: BR_0 offset from .0005 to .0002, trying to reduce vertical thrash in startup. Drop ZCUR3 P from 6 to 4 before .35sec, to reduce thrash after seg switch No change in gas or pg4, expect the disruption to help runaways for one shot plasma full length no runways, lots of neuts, over 1e14 GPC's saturate at 8keV. TF breakers pulled after shot again Not clear if vertical behavior is really improved either early or between .1 and .2sec. Nl04 below 5e18 at 20msec, but essentially no runaways this time. Next: raise Ip to 1.2MA
Feb 10 2010 03:29:23:900PM	1100210013	Steve Wolfe	Shot#13: raise Ip to 1.2MA Drop zcur3 P from 4 to 3 between .116 and .24sec PG1 (argon) from 80 to 100msec at .3sec plasma disrupts at 1.55sec, lots of runaways early, 1e4 neutrons in pulse Time to do something about the runaways; wish I knew what. Next: pg4 to 75msec, increase clearin in rampdown (disruption was vertical)
Feb 10 2010 03:55:23:290PM	1100210014	Steve Wolfe	Shot#14: pg4 to 75msec, ramp clearin starting at 1.3sec in rampdown Increase first argon pulse from 100 to 150msec Decrease Btor to 7.8T (-218400A) Load at 10-Feb-2010 15:35:12.00 Open tree /home/wolfe/pcs_scratch -1 Open tree done plasma disrupts at 1.4sec, lots of runaways, fewer neutrons Vertical instability seems to start earlier, need to fix rampdown No TF faults or breaker trips this time.
Feb 10 2010 04:22:26:940PM	1100210015	Steve Wolfe	Shot#15: put clearin ramp back to 1.5sec, slow down after. Drop nl04 demand to 0 at 1.3sec, slow down Ip rampdown No startup changes, see if disruption helps the runaways Fizzle. well that's one way to get rid of runaways. pressure was up a little bit, to .107 mTorr. I guess I better not raise pg4 anymore. Breakdown is a little late. Next: drop IC_EF4 back to -1280
Feb 10 2010 04:36:38:147PM	1100210016	Steve Wolfe	Shot#16: drop IC_EF4 back to -1280 Fizzle again. Need to drop the fill? Next: pg4 from 75 to 65msec, BR_0 back to .0005
Feb 10 2010 05:03:31:893PM	1100210017	Steve Wolfe	Shot#17: pg4 from 75 to 65msec, BR_0 back to .0005 Still trying to get the 7.8T shot with all RF This time wait until cryopump is fully cold and 28 peak drops before going to INIT. plasma full length, some runaways, better than before. No RF! No TF faults. Maybe that 2.5% decrease in TF really makes the difference? Vertical thrash in startup is back, I think the BR_0 tweak is the difference there; the apparent z position starts at +.03, and rises to .05 before dropping back down. I would recommend reducing BR_0 offset to zero, but it's probably not a problem. Ratiomatic at .08mTorr at t=0. END OF RUN (more 8T tomorrow)

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	08:59:33:513AM	Plasma	Ok	TF PLC 185kA
2	09:21:30:253AM	Plasma	Ok	TF PLC 205kA
3	09:52:17:563AM	Plasma	Bad	TF Type 1 Flt
4	10:58:19:810AM	Test	Ok	TF 100kA PLC Test
5	11:32:25:537AM	Plasma	Ok
6	11:55:04:890AM	Plasma	Ok
7	12:20:18:793PM	Plasma	Ok
8	12:44:13:583PM	Plasma	Ok
9	01:09:06:270PM	Plasma	Ok
10	02:14:19:003PM	Plasma	Ok
11	02:37:13:297PM	Plasma	Ok
12	02:59:17:683PM	Plasma	Ok
13	03:22:26:860PM	Plasma	Ok
14	03:49:46:080PM	Plasma	Ok
15	04:12:51:453PM	Plasma	Ok
16	04:32:31:750PM	Plasma	Ok
17	04:52:12:350PM	Plasma	Ok