| Miniproposals | ||||||||||
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| Operators | |
| Session leader(s): | Steve Wolfe,Jin-Seok Ko |
| Physics operator(s): | Bill Rowan |
| Engineering operator(s): | Bill Cochran,Sam Pierson,Bill Parkin |
| Engineering Operator Run Comment |
| MP#461 Zero Loop Voltage development SL: Wolfe PO; Rowan |
| Session Leader Plans |
| Entered: Apr 10 2007 07:56:45:230AM |
| Author: Steve Wolfe |
Session Leader Plan for Tuesday, 10-Apr-2007
MP#461 Zero Loop Voltage development
SL: Wolfe
PO; Rowan
Start with seg2 based on 1070330013, a lower hybrid target shot.
We will need the Observer Procedure dpcs_lowpass_obs loaded and turned on
on Wire 12. Use the following values on the setup screen:
Parameters: {TAVG: .01}
Segments: 2
Wires: 12
Wire 12 will be set up for PSI0, predictor alg = fluxihh,
Keyword Args: rcenter=.55, zcenter= -.41
Begin with derivative gain of 1, turned on at 1.0sec
Waveform should be flat at 0.
It may be best to load a seg2 based on one of my simulation shots, just to
get started, and zero the controller for step 1. A prepared shot to try
is 1070410303.
We will be more or less following the shot sequence in the miniproposal,
although some runs with the Alcasim code suggest that we may need to
free-lance a bit.
1. With the controller on wire 12 zeroed, run the basic shot and monitor
observer and PID outputs. Adjust filter time constant for smooth response,
and D gain to avoid PID saturation, give levels in the range of other
wires. [3 shots]
2. Load (call) the controller. We want Alg xcontihh NO KEYWORDS. time const.
of 40 to start.
Turn Ip wire gain off at 1.0 sec. We should also modify the
V waveforms in Segment 2 to put the
pre-programmed voltages on all supplies, especially OH1 and the OH2's,
to zero at 1.0 sec. If we haven't modified things too much in step 1,
a pre-loaded shot is 1070410302
Observe rampdown and adjust D gain to get stable low surface
voltage while not overdriving power supplies. If ramp-down extends past 1.5
sec, it may be necessary to reprogram waveforms to keep position and
xpoints close to original. Simulations indicate there may be a problem
keeping EF2's from going to zero as current decreases and EF3 drops.
Things to try:
Drop IC_EF4 gain after 1sec, increase EF2byEF4
Monitor PSI0 wire (on 11) with rcenter,zcenter=[.45,0.] (clearin ref)
Maybe turn both on, feedback on average?
[5-10 shots]
3. Simulation runs indicate that we may have trouble getting the surface
voltage to really get to zero due to swinging of EF3 and EF1 and EF2 trying
to maintain RCUR and CLEARIN (I think it's CLEARIN). We may need to try
tweaking the balance of the other gains, or the PSI0 controller. May also
need to increase the gain beyond what's allowed in PCS; could move to
wire 10 with ten times the D gain (time constant). [time remaining]
|
| Entered: Apr 10 2007 09:13:31:590AM |
| Author: Dennis Whyte |
| Hydrogen recovery using disruptions
The purpose of these experiments is to force hydrogen recovery from the material surfaces in C-Mod by thermal desorption by intentionally disrupting ohmic plasmas. This continues from last week's experiments when we intentionally (1070405) and unintentionally (1070406) made VDE's at ~ 1 MA. Our observations from those shots showed that the total and H gas recovery was decreasing after repeated VDE's to the same location. H plasma content would temporarily increase in subsequent shots and then decrease. This all seems consistent with temperature driven permeation and release of the H from certain areas that get heated during the disruption. Unordinary experimetnal requirements - Gate valves close during shot and ~1-5 minutes afterward - We will want to be able to vary the gate valve close time during the run - Pre and post shot RGA on the bypass valve is essential - Check H/H+D diagnostic Plan today 1. Check back on standard downward 1 MA VDE and diagnose H/D recovery to see it is consistent with where we left off last week. Reference shot: 1070405018 2. Repeat 1 at 1.2 MA. 3. Upward VDE at 1.2 MA 4. Attempt to heat inner wall with a 1 MAdisruption. Intentionally turn up vertical field (RCUR control) to rapidly push the plasma into the center column. 5. Repeat 4 with 1.2 MA Fizzle strategey: Wait until base pressure is ~1e-6 Torr. To hasten this we will set the gate valve close time to the minimum required for RGA and vessel pressure diagnosis. |
| Entered: Apr 10 2007 01:30:24:510PM |
| Author: Jin-Seok Ko |
| Beam into gas spectrum measurement : This is to verify that the blue features on the spectrum goes away with the 7 deg tilted beam. Configurations: 1. MSE - Shutter OPEN - PEM OFF - No fixed polarizer - Ch 7,0, (and 5) fibers connected to spectrometer 2. Beam - 50 keV, ~ 6A - Long pulse (0.5 ~ 1.5 sec) 3. Spectromter - Slit size : 200 micron 4. Run plan ------------------------------------------------------------------------------------ mse ch Bt EF3 EF4 He reference Comment ------------------------------------------------------------------------------------ J 7 5.4 12 5 1 1060725008 nominal condition k 7 5.4 5 0 1 1060725005 change pitch angle L 7 2.0 12 5 1 1060725007 change TF + biggest pitch angle M 0 5.4 12 5 1 1060725008 change channel N 0 2.0 5 0 1 1060726010 chnage TF; 'matches' pitch on J. ------------------------------------------------------------------------------------ |
| Physics Operators Plans |
| Entered: Apr 9 2007 06:38:51:670PM |
| Author: Bill Rowan |
| Engineering setup for Tuesday, April 10, 2007
Start with: MP#461 Zero Loop Voltage Development (1/2 d) Session leader: Wolfe Followed by: MP#460 Test of Effect of Fast ions on MSE with perpendicular injection Session leader: Scott and Ko Backup experiment: MP412a Disruptive H removal Session leader: Whyte and Blip Physics operator: Rowan ECDC overnight in D2, pressure=2e-4 Torr. Rmin/Rdwell/Rmax = 44/45/103 cm. Bake at 60 C. The run will start at 09:00 and end at 17:00. ---------------- MP #461 Load shot 1070330013 A-coil configuration: normal [Dtop -Dbot -Jtop +Jbot] and enabled. Gas Setup: fill B-Top with 6 psi D2 Hybrid enabled (PG4) fill B-side lower with 1 psi Ar Hybrid DISABLED (PG1) leave B-side upper as is Hybrid DISABLED (PG2) fill B-main (C-side) with 40 psi D2 Hybrid enabled (PG3) NINJA pumped out disabled Enable the following gate valves and shutters: ECE, VUV, Z-bolo shutters Torvac setup: Gate valves open during pulse. ---------------- ---------------- For MP#460 Load shot 1060725008. This is a beam into gas experiment with fields. Torus pressure = 1 mT of He. BT = 5.4 T, EF3 = 12 kA, EF4 = 5 kA EO: turn off all supplies except TF, EF3, EF4 Tech: put 6 PSI of He into B-Top (PG4) PO: segment 1 on; segments 2,3,4 off set PG4 to produce 1 mT of He using PG4 control in segment 1 Compare PG4 settings for 1070402009 (1 mT of He) and 1070402011 (3 mT of He) DNB required at 50 kV and a minimum of 4 A McP 2051 Spectrometer required with MSE ch 7 installed ---------------- |
| Session Leader Summaries |
| Entered: Apr 10 2007 02:07:24:430PM |
| Author: Jin-Seok Ko |
| dnb current is higher and measured spectrum larger. we will give Dexter another try next shot to improvve the dnb current. Discovery: we have NOT been puffing pure helium. It has been a mixture of mostly deuterium and some helium. this will be fixed on the next shot: next shot should be pure helium puffing. |
| Entered: Apr 10 2007 05:14:36:180PM |
| Author: Jin-Seok Ko |
| Beam into gas spectrum measurement : This is to verify that the blue features on the spectrum goes away with the 7 deg tilted beam. ------------------------------------------------------------------------------------ shot mse ch Bt EF3 EF4 He reference DNB Comment ------------------------------------------------------------------------------------ 007 J 7 5.4 12 5 1 1060725008 50 3 too low beam current 008 J 7 5.4 12 5 1 "" 50 3 He puffing mixed with D 009 J 7 5.4 12 5 1 "" No DNB trigger 010 J 7 5.4 12 5 1 "" 50 5 Good shot (weak counting in the spectrum) 011 J 7 5.4 12 5 1 "" 50 5 Good shot (weak counting in the spectrum) 012 J 7 5.4 12 5 2 "" 50 5 Good shot (no better in the intensity) 013 K 7 5.4 0 5 1 1060725005 50 5 Good shot (no beam data) 014 K 7 5.4 0 5 1 "" 50 5 Good shot (no beam data) 015 L 7 2.0 12 5 1 1060725007 50 5 Good shot (no beam data) 016 EF power test only 017 M 0 5.4 12 5 1 1060725008 No DNB trigger 018 M 0 5.4 12 5 1 "" 50 5 Good shot (no beam data) |
| Entered: Apr 11 2007 08:40:56:293AM |
| Author: Steve Wolfe |
SL_SUMMARY for MP461 part of 1070410 SL: WOlfe PO: Rowan We only got two plasma shots devoted to this miniproposal today. Shot#1 was the baseline case, essentially a re-run of 1070330013 with the PSI) observer loaded on wire 12, and the dpcs_lowpass_obs procedure on for that wire, with an effective filter time of 0.01 sec The derivative gain was set to 1.0 at 1sec, and the controller zeroed. The observer was consistent with the EFIT vsurf value of -1.4V, and the PID_OUT signal on wire 12 was essentially flat at -0.155. We next had a series of data system related problems, including a repeat of the magnetics timing error and other bad trigger effects we had seen on 1070404004. Took an OH test, which was ok, then had a different data hang in INIT which resulted in a no-power shot. Shot#5 was the first try with the controller enabled, and the Ip gain turned down. Also, we dropped the voltage feedforward on everything to zero at 1sec. The conroller time constant was set to 40, resulting in an effective "Physics PID"=0.04, a very small value. The result was very similar to the Alcasim simulation 1070410302. Plasma started rampdown at 1sec, disrupting at 1.26sec at a current of 330kA. There were thrashes in RCUR and CLEARIN at 1sec. The surface voltage dropped to -0.6V, with the OH currents holding flat or reversing and slow decays on the EF2's and EF3. The EF1 currents continued to swing positive at essentially the same rate as before 1sec. One difference from the simulation is that li rose from 1.5 to 2.5, resulting in a growing vertical instability culminating in the disruption at 1.26sec. I believe this result should be interpreted as what we get when we effectively turn the Ip gain off, I think the wire 2 gain is probably effectively zero. Comparison of Alcasim simulations 1070410302, with gains as in shot#5, and 1070411301 with the PSI0 gain set to zero at 1sec, give the same loop voltage; the difference in the oh1 output demand is about .02V out of a pre-1sec value of ~2V. For shot 6 we loaded a shot with the OH feedforward voltages ramping down to zero at 1sec, instead of dropping abruptly, to help with the thrash at 1sec, before proceeding to higher gains. However, we experienced a recurrence of the bad trigger event as on shot#2. Following a long session of head-scratching, along with Joe and Yuri and Josh, we threw a live scope on a decoder output so we could see if it saw an early START trigger in INIT, and turned the run over to beam-into-gas. The power system response to the magnetics errors we've had on 1070404004 and on shots 2 and 6 today seems relatively benign, basically the OH2's go to -28kA and -22kA becaulse the Br0 is bogus. The mis-timing of the magnetics seems to be identical on all three shots. However, other triggers seem to be coming early in INIT, including the YAG firing. Irby sees "impossible" signals on TCI, Brian's gas signals are at the wrong times, and the Halpha and CIII signals disappear completely. The problem did not recur for the rest of the day, but that certainly doesn't mean it's fixed. Tom and Josh did revert some CAMAC software, but nobody has a good idea of how this event could be software related. |
| Physics Operator Summaries |
| Session Leader Comments | |||
| Apr 10 2007 07:08:37:697AM | Steve Wolfe | Try setting up a case for the start of today's run. Reload 1070409313 from my simulations yesterday. Drop EF2byEF4 gain back to 2 at 1sec zero wire 10 change dpcs_lowpass_obs WIRES back to 12 (from [10,12]) Note that ICEF4 gain is still at 2; thought I'd removed that. Leave it for now. PSI0 settings: Decrease PSI0 D to 1.0; Change factor to .001 Controller is set with TAUOPT=0.3; call it and look at printout It suggests a max time const of 212.156; current value is 40. Leave at 40. Note Physics PID is 0.04, which seems very small. Tweak voltage waveforms to get the zero at 1sec. Simulate: It seems to have brought up more windows today than it did yesterday, lots of power supply windows? Ignore them. Source shot:1070330013, Zsig=0.6, simulink load from 1070330013 Skip precharge; and it's running Forgot to do the build all! And I'm taking shot 1. Do that again, build and take 1070410301 It's getting a little bit vertically unstable as itramps down? The OH1s turn around, EF1 continue to ramp. Aout 12 is at -.5V; CLEARIN and RCUR both jump. OK, that's in the can. Could load from it. | |
| Apr 10 2007 07:38:31:113AM | Steve Wolfe | See if it helps to change the controller Remove the tauopt switch; the coefficients are quite different. This time it offers a tau=182 leave at 40., physics pid still .04 Build it and try a shot. 1070410302: Still gives only about -0.5V. There's a thrash at the change, maybe too abrupt on the feedforward voltages. All the error signals and pid values drop after I switch to loop voltage. | |
| Apr 10 2007 07:52:26:713AM | Steve Wolfe | Copy the V waveforms from seg3 to get a setup shot with these unmodified. Turn off controller on wire 12 reset Ip gain to 9. Sim shot=1070410303 (this will be starting point, if it works.) Seems to have. | |
| Apr 10 2007 08:41:52:577AM | Steve Wolfe | To see the extra output provided by the Psi0 wire, turn it on without turning off the others (let them fight) 1070410304: Ip and Vloop control both on. Ip wins, no drop in current. The aout voltage doesn't seem to even notice. That implies that the effective gain is very small, which is consistent with the "Physics PID" of 0.04, compare numbers of order unity elsewhere. The diff is really in the noise. 1070410305: Try again with higher gain, D=10. This time I see the current come down a little, and the aout12 drops a tenth or so, momentarily. The oh1 difference demand shows a 0.6V spike at 1sec. I think this makes sense, it takes a little while for the current control PID wire to move; when it does, it doubles, -0.5 to -1, which seems to be what is required to overcome the wire 12 demands, which goes from 0 to -1.7. | |
| Apr 10 2007 08:47:08:407AM | Steve Wolfe |
Note the difference in the coefficients with and without tauopt=0.3
is only in the major controllers.
XCONTIHH with tauopt=0.3:
Singular values 897158. 445938. 139600. 132767. 1103.29 498.461 270.316 184.383
169.538 134.794 130.179 61.4530 60.8159
Tolerance 1.00000e-07; 13 singular values kept.
Voltage Controller*1.E3 before time-constant scaling.
1 constraint(s) 1 major constraint(s).
Major Parameters: PSI0 RCUR ZCUR
Current and Voltage limits:
15000. 15000. 10000. 10000. 22000. 5000. 50000. 50000. 50000.
400. 400. 350. 350. 3650. 1050. 900. 200. 200.
Time constant(s) in voltage optimization 300.000 ms.
PSI0 RCUR ZCUR CLEARIN RXL ZXL RXU ZXU Cnstr...
0.570 -0.361 0.682 -0.124 -0.011 0.073 0.112 -0.531 -1.245
0.570 -0.362 -0.681 -0.125 0.126 0.670 0.009 -0.015 -1.244
0.415 0.067 0.530 1.451 0.311 -0.806 0.381 0.671 11.046
0.415 0.067 -0.530 1.451 0.667 -1.471 0.056 0.121 11.046
1.772 2.589 -0.000 -1.083 -0.197 0.560 -0.010 -0.057 -28.101
-0.125 1.220 -0.000 -0.123 0.043 -0.021 0.058 0.063 87.877
0.943 -0.553 -0.002 0.057 -0.049 -0.011 -0.051 -0.010 0.859
0.223 -0.134 0.187 0.096 0.019 -0.047 -0.078 -0.018 0.269
0.223 -0.135 -0.187 0.096 -0.072 -0.018 0.003 0.002 0.269
XCONTIHH with tauopt not specified:
Singular values 897158. 445938. 139600. 132767. 453.079 327.043 152.610 135.489
91.3055 73.7592 71.9946 21.1681 20.7049
Tolerance 1.00000e-07; 13 singular values kept.
Voltage Controller*1.E3 before time-constant scaling.
1 constraint(s) 1 major constraint(s).
Major Parameters: PSI0 RCUR ZCUR
Current and Voltage limits:
15000. 15000. 10000. 10000. 22000. 5000. 50000. 50000. 50000.
400. 400. 350. 350. 3650. 1050. 900. 200. 200.
Time constant(s) in voltage optimization 100.000 ms.
PSI0 RCUR ZCUR CLEARIN RXL ZXL RXU ZXU Cnstr...
0.326 -0.197 0.393 -0.124 -0.011 0.073 0.112 -0.531 -1.245
0.326 -0.197 -0.393 -0.125 0.126 0.670 0.009 -0.015 -1.245
0.175 -0.045 0.284 1.451 0.311 -0.806 0.381 0.671 11.046
0.175 -0.046 -0.284 1.451 0.667 -1.471 0.056 0.121 11.046
1.871 2.846 0.000 -1.083 -0.197 0.560 -0.010 -0.057 -28.101
-0.357 0.498 -0.000 -0.123 0.043 -0.021 0.058 0.063 87.877
1.017 -0.592 -0.002 0.057 -0.049 -0.011 -0.051 -0.010 0.859
0.275 -0.160 0.282 0.096 0.019 -0.047 -0.078 -0.018 0.269
0.275 -0.160 -0.283 0.096 -0.072 -0.018 0.003 0.002 0.269
| |
| Apr 10 2007 09:26:40:407AM | 1070410001 | Steve Wolfe | Out of time, ready to start looking at real plasmas Shot#1: Should repeat 1070330013, but with psi0 predictor,pidout on wire 12 (Controller is zeroed). Simulation ref is 1070410303. The PID12 output on 303 was -0.15, aout12~-1.3V. Plasma full length. Aout 12 (deriv)=-1.4V straight across. Pid12=-.155, right on the simulation value. New scopes are blowing themselves away. Gas puff traces are screwed up, something at 8.5sec Shot looks nominal. Let's go on and load from 1070410302 |
| Apr 10 2007 09:36:46:190AM | 1070410002 | Steve Wolfe | Shot#2: load from 1070410302. Should have phys D=.04, voltages to zero, Ip P->0 all at t=1.0sec Dud or fizzle? Something bad happended to magnetics. signal is at 1.7sec NO spectroscopy signals. OH2 currents are badly out of balance. This is like what happened last week (Thursday?), bad gate and trigger to magnetics. Gas signals still missing (invisible data at 7.5 to 8.5 sec) Setup for a no power shot. |
| Apr 10 2007 09:38:00:487AM | 1070410002 | Steve Wolfe | Shot#2: load from 1070410302. Should have phys D=.04, voltages to zero, Ip P->0 all at t=1.0sec Dud or fizzle? Something bad happended to magnetics. signal is at 1.7sec NO spectroscopy signals. OH2 currents are badly out of balance. This is like what happened last week (Thursday?), bad gate and trigger to magnetics. Gas signals still missing (invisible data at 7.5 to 8.5 sec) Setup for oh1 nocomm PLC test to see if magnetics timing comes back. |
| Apr 10 2007 09:47:54:960AM | 1070410003 | Steve Wolfe | Shot#3:Setup for oh1 nocomm PLC test to see if magnetics timing comes back. OH1 ran. Magnetics timing back to normal. Spec signals are back. Still no piezo driver signals; can live without those. Last time, it didn't come back. Cross fingers and proceed, doesn't seem to be too dangerous. |
| Apr 10 2007 10:12:02:000AM | 1070410004 | Steve Wolfe | Shot#4: Repeat shot 2, try for plasma with weak D gain on psi0. ref 1070410302. CAMAC meltdown in INIT. Nopower shot. Cell Access for lower hybrid |
| Apr 10 2007 10:44:18:250AM | 1070410005 | Steve Wolfe | Shot#5: Repeat shot 2, try for plasma with weak D gain on psi0. ref 1070410302. plasma rampdown starts at 1sec, disrupts at 1.26, 330kA. Vsurf to -.6V, EF1's still ramping as in simulation. li is growing from 1.5 to 2.5; left gap has a big thrash, so does right gap, CLEARIN. It looks distressingly like the simulations. CLEARIN is recovering slowly, the RCUR isn't. It also develops a vertical instability because n/nc grows, because nc drops with rising li. Elongation isn't growing. Try making the VOH's go to zero smoothly before 1sec instead of abruptly. Question is, will that reduce the thrash? |
| Apr 10 2007 10:48:02:420AM | 1070410006 | Steve Wolfe | Shot#6: Repeat 5 with oh voltages reprogrammed. Dud or fizzle. Magnetics again; and spectroscopy. Like shot 2. Something on the camac highway is having a stroke. |
| Apr 10 2007 12:56:21:480PM | 1070410006 | Steve Wolfe | Trigger problem is mysterious and potentially more dangerous on plasma shots than on beam-into-gas. A diagnostic is being set up to look for multiple or mistimed START pulses. I will turn over the run to Scott and Ko for the MSE beam experiment. |
| Apr 10 2007 01:38:36:967PM | 1070410007 | Jin-Seok Ko | Case J. But too low beam current. Will try again. |
| Apr 10 2007 02:13:36:947PM | 1070410009 | Jin-Seok Ko | Alas, no DNB trigger, so we did not get a DNB on this shot. |
| Apr 10 2007 03:04:10:530PM | 1070410010 | Jin-Seok Ko | first good shot of condidition """"J"""" of this experiment. MSE spatial channel 7, 5.4 Tesla, EF3/4 = 12/5. good dnb. Next shot, we will take a repeat as per the original plan. |
| Apr 10 2007 03:07:31:843PM | 1070410012 | Jin-Seok Ko | We do not see any better in the spectrum signal. Moving on the next case (K). He pressure going back to 1 mTorr |
| Apr 10 2007 03:23:01:850PM | 1070410013 | Jin-Seok Ko | Case K Ch: 7 Bt: 5.4 T EF3: 0 EF4: 5 kA He : 1 mTorr No beam data available Got spectrum data though. |
| Apr 10 2007 03:31:33:790PM | 1070410014 | Jin-Seok Ko | Case K, Second shot Ch: 7 Bt: 5.4 T EF3: 0 EF4: 5 kA He : 1 mTorr No beam data available Got spectrum data though. |
| Apr 10 2007 03:45:50:217PM | 1070410015 | Jin-Seok Ko | Case L Ch: 7 Bt: 2 T EF3: 12 kA EF4: 5 kA He : 1 mTorr No beam data available Got spectrum data though. |
| Apr 10 2007 04:41:56:060PM | 1070410016 | Jin-Seok Ko | EF3 power test only |
| Apr 10 2007 04:55:56:130PM | 1070410017 | Jin-Seok Ko | Case M Ch: 0 Bt: 5.4 T EF3 : 12 kA EF4 : 5 kA He : 1 mTorr DNB not triggered |
| Apr 10 2007 05:17:28:213PM | 1070410018 | Jin-Seok Ko | Case M Ch: 0 Bt: 5.4 T EF3 : 12 kA EF4 : 5 kA He : 1 mTorr Got spectrum data No beam data This is the end of the run today. |
| Physics Operator Comments | |||
| Apr 10 2007 08:38:58:247AM | Bill Rowan | Loaded SL's 1070410303 | |
| Apr 10 2007 08:41:09:043AM | Bill Rowan | checked observer dpcs_lowpass_obs and found that it was already turned on | |
| Apr 10 2007 10:02:00:200AM | 1070410001 | Bill Rowan | 01. Plasma
Next shot. load 1070410302 |
| Apr 10 2007 09:43:49:740AM | 1070410002 | Bill Rowan | Next shot. OH1 only.
|
| Apr 10 2007 10:00:28:370AM | 1070410002 | Bill Rowan | 002. Dud.
Wolfe recalls it as similar to 1070404004 |
| Apr 10 2007 09:45:00:630AM | 1070410003 | Bill Rowan | 003. Oh1 only |
| Apr 10 2007 09:47:32:680AM | 1070410003 | Bill Rowan | Next shot. Try for plasma |
| Apr 10 2007 09:58:50:260AM | 1070410004 | Bill Rowan | 004. No power shot. Data acquisition problems. |
| Apr 10 2007 10:41:58:170AM | 1070410005 | Bill Rowan | 005. Plasma
Next shot. Modified OH1 OH2_U OH2_L see SL log |
| Apr 10 2007 10:48:40:047AM | 1070410006 | Bill Rowan | 006. Dud
smilar to shot 002 |
| Apr 10 2007 01:21:29:583PM | 1070410007 | Bill Rowan | 007. switching to MP 460
load shot 1060725008 supplies all off except TF, EF3, EF4 6psi He on B-top |
| Apr 10 2007 01:36:45:607PM | 1070410007 | Bill Rowan | beam current low.
|
| Apr 10 2007 02:07:01:883PM | 1070410008 | Bill Rowan | 008.
observed too much D2 in the spectrum Next shot. purge and fill B-top again with helium |
| Apr 10 2007 02:57:35:793PM | 1070410012 | Bill Rowan | 012.
Increased the helium pressure by a factor of two. Increase the pg4 pulse from 0.5 s to 1.0 s |
| Apr 10 2007 03:15:48:940PM | 1070410013 | Bill Rowan | 013.
Loaded 1060725005 Reduced helium pressure by a fact or two. Decreased the pg4 pulse from 1.0 on shot 012 to 0.5 on this shot. Turned EF3 off |
| Apr 10 2007 03:44:32:560PM | 1070410015 | Bill Rowan | 015.
Loaded from 1060725007 EF3 on. TF = 2.0 T |
| Apr 10 2007 03:51:26:027PM | 1070410015 | Bill Rowan | 016,
Loaded from 1060725008 EF3=12 EF4=5 TF=5.4 |
| Engineering Operator Comments | ||||
| Shot | Time | Type | Status | Comment |
| 1 | 09:03:13:427AM | Plasma | Ok | |
| 2 | 09:28:24:377AM | Plasma | Ok | |
| 3 | 09:40:08:520AM | Test | Ok | OH1 Test Shot |
| 4 | 09:53:20:073AM | Plasma | Bad | no power |
| 5 | 10:28:36:070AM | Plasma | Ok | |
| 6 | 10:43:00:920AM | Plasma | Ok | |
| 7 | 01:18:32:960PM | Test | Ok | MP #460 gas test |
| 8 | 01:41:06:263PM | Test | Ok | MP# 460 |
| 9 | 02:08:42:743PM | Test | Ok | MP #460 |
| 10 | 02:24:14:843PM | Test | Ok | MP # 460 |
| 11 | 02:36:57:020PM | Test | Ok | MP #460 |
| 12 | 02:54:33:540PM | Test | Ok | MP #460 |
| 13 | 03:13:04:313PM | Test | Ok | MP #460 TF & EF4 |
| 14 | 03:27:03:193PM | Test | Ok | MP #460 TF & EF4 |
| 15 | 03:39:58:903PM | Test | Bad | EF3 fault. |
| 16 | 04:41:37:607PM | Test | Ok | EF3 test |
| 17 | 04:52:16:017PM | Test | Ok | MP 460, TF, EF3, EF4 |
| 18 | 05:10:28:010PM | Test | Ok | MP 460 TF, EF3, EF4 |
| System Availability | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Apr 10 2007 09:02:51:850AM | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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