| Miniproposals | ||||||||||
|
| Operators | |
| Session leader(s): | Bruce Lipschultz |
| Physics operator(s): | Steve Wolfe |
| Engineering operator(s): | Bill Cochran,Bill Parkin |
| Engineering Operator Run Comment |
| MP#348a Boron injector experiments |
| Session Leader Plans |
| Entered: Mar 13 2006 06:19:03:580PM |
| Author: Bruce Lipschultz |
| MP#348a Boron injector experiments
We will have several goals today: 1. Make sure the power supplies are ok. 2. Use the boron injector to see if decent signals can be obtained in L-mode with the Inner wall CXRS by GPI measurement (SL - BLip) 3. Condition up the ICRF (MP#355 - SL Wukitch) 4. Check out the diborane pufff suring a shot by puffing He We hope to all get along ok. Step 1: 1st shot ef3 power supply test 2nd shot 50 kA TF only test, PLC control, 3 s flattop 3rd shot 150 kA TF only test, PLC control 2 s flattop may need a 4th shot at 175 kA, but will look at 2 and 3 before we decide Step 2: Set up a 1 MA , nl04 ~ 1. shot like 1051129011 with inner and outer gaps ~ 1.3-1.5 cm. Bring the GPI puff with D2 up and make sure the measurement works (2-4 shots). Set up the RF for 1-1.5 s Step 3: If step 2 is successful and the shot programming is ready switch to USN (e.g. shot 1051118022). Take data for several shots. Step 4: If successful move on to SSEP sweep from -5 mm to + 5 mm (1050408026 with larger gaps and slightly higher density. (2-4 shots) Step 5: Do the He puffing tests. Step 6: Vary density for the LSN case from 0.8 to 1.2 in steps of 0.2 |
| Physics Operators Plans |
| Entered: Mar 13 2006 06:07:03:753PM |
| Author: Steve Wolfe |
Engineering setup for Tuesday 14-Mar-2006
MP#348a Boron Injector Experiments
MP#355 ICRF Conditioning (start piggyback, may take over at some point)
Session leader: Irby, Lipschultz (Wukitch for ICRF)
Physics operator: Wolfe
Overnight ECDC in D2, and bake at 60 C.
Run begins at 09:00 and ends at 17:00
The run will begin with a series of power system tests:
1) EF3 PLC control test
2) TF 50kA TF-only, PLC control, 3sec flattop
3) TF 150kA TF-only, PLC control, 2sec flattop
4) TF 175kA TF-only, PLC control, 1.5sec flattop (optional)
Following these test pulses:
Power systems as on 1051129011
Except:
Fizzle delay on OH1 and OH2's=300msec, Fizzle delay on TF=2500ms
TF Invert time at 3.8sec
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 + 2psi Neon Hybrid Enabled (PG1)
leave B-side upper as is Hybrid DISABLED (PG2)
fill B-main (C-side) with 40 psi D2 Hybrid enabled (PG3)
fill NINJA 12psi D2
Diborane system (Helium bottle installed), Hybrid DISABLED (output_19)
Enable the following gate valves, assuming no vacuum problems:
ECE, VUV, Zbolo shutter
Torvac setup: Gate valves open
ICRF: All four transmitters in RUN-ON by 08:30.
Run plan: Start from seg2 of 1051129011, with (D)PCS changes as follows:
Re-program TF for back porch.
Verify dpcs_fizzle source_shot=1060308026
Set up output_19 puff (diborane piezo) (see SL for waveform)
Load seg3 from 1051118022, raise field from 5.2->5.4, program backporch;
Recalculate magnetics predictors on seg3
Load seg4 from 1050408026? for SSEP sweep. Modify gaps,nl04,tf
Start from (slightly re-programmed) 1051120011
1MA, nl04=1.0, Inner gap=1.3:1.5cm
Take 2-3 shots to set up the NINJA puff for CXRS measurement and probes
3-5 shots to get the B shaker up and going
then
2-4 shots for He puff from diborane system
Switch to USN L-mode shot (seg3)
2 shots with SSEP sweep (seg4?)
2 shots in USN
If time remains, do a density scan as directed by SL
I will need to run using the beta test version of PCS_3, in order to
program the diborane piezo.
|
| Session Leader Summaries |
| Entered: Mar 14 2006 05:22:01:390PM |
| Author: Bruce Lipschultz |
| MP#348a Boron injector experiments
The engineers did fix EF3. This took most of the day. When starting back up we had problems with a breaker (see physop summary). Around 3:30 we got real shots. Successful in initial steps in the remaining time: We got plenty of signal using the inner wall GPI puff CXRS to measure the BV CXRS line just inside the separatrix (0-6mm). This was using the Kaiser spectrometer system. When B dust was injected the BV signal went up by ~ factor of 2 indicating that the core B density went up a similar factor. We never got to USN and the SSEP sweep. Nor did we get to the testing of the diborane puff system. |
| Entered: Mar 15 2006 08:14:39:917AM |
| Author: Jim Irby |
| The boron injector was brought back into operation today. Boron is clearly seen on the wide 2 camera on shot 12 starting around 1 s and shot 13 starting around 0.5 s (change in injector timing).
We took two plc controlled TF only shots to check out the #49 bottom joint: 1060314002 50 kA, 3 s flattop 2.06 u @ 2 s 1060314003 150 kA, 2 s flattop 1.89 u @ 2 s These values have not changed a significant amount over the last week: 106030710 at 50 kA was 2.2 u 106030711 at 150 kA was 1.93 u After letting the machine warm up over the weekend to -25 C we found that the TF scanner value of the #49 resistance had dropped back to its nominal value. It was low yesterday during a scanner test, and continued to be low until shot 6 today. Then it went back up to the 9 or 10 u level (after several no power tests). We are currently checking out the scanner to see if this effect is instrumental. Switching cables around so that the questionable signal was sent through a different set of isolation relays resulted in a normal signal again. We have put the connectors back in their original configuration for the 1060315 run and will see if the reading returns to a high value. |
| Physics Operator Summaries |
| Entered: Mar 14 2006 05:25:14:970PM |
| Author: Steve Wolfe |
Most of the day was taken up with power systems work.
The TF tests in the morning went fine, and to start with
the TF scanner did not show a high reading on turn#49. The
high value came back during testing for the EF3, and it is now
believed that these readings are spurious.
The problem with the EF3 breaker pulling out at the beginning
of pulse took most of the day to solve. It was finally determined
that there was a bad contact on a multipole switch in the control
cabinet that was causing the input to the phase rotation relay
to be missing one phase. This was fixed by shot#8, around 2PM.
However, when we started to go for plasma on shot#9 we had a problem
with TF breaker#1. Not only did the breaker fail, but it smoked the
contactor switch in the control room, which also had to be replaced.
This took until after 3:30PM before we actually got shot#9, which was
a successful plasma.
Once we got going we had some success with the run, making it through
step 2 of Bruce's run plan. The gaps needed some adjustment, which was
accomplished by shot 11. Brian exercised his probes, the NINJA puff
was set up, and Jim sprinkled boron from the salt shaker. The ICRF
got some H-modes with D&E, but J3 was still problematic and will require
repair of the stub tuner.
Bruce decided to go on to USN for shot 14, but we ended up with a fizzle
and a dud. The programming is there in segment 3 (with NL04 reduced to
0.8e20, as requested by SL and ICRF). The SSEP programmed shot is in
segment 4, and still has NL04 set to 1e20. All of these have backporches
on the TF. Check with Irby before removing these, but he'll probably
agree.
Note to next Physop: In order to do the diborane puff, it will be necessary
to use the Beta version of PCS in /usr/local/cmod/codes/pcs3-Beta/pcs
Scorecard:
Tests 8
Duds 1
Fizzles 2
Plasmas 3
--------- --
Shots 15
|
| Session Leader Comments | |||
| Mar 14 2006 09:15:30:053AM | 1060314001 | Jim Irby | EF3 test
On Monday the EF3 breaker was replaced after finding a sheared bolt. However, looks like we have another problem: Breaker pulled just as we went into pulse --- same problem as on Friday Will do TF tests before we open up to work on EF3 supply TF scanner data looks very good. The coils were warmed up to -25C over the weekend. #49 now back down to normal. |
| Mar 14 2006 09:38:07:617AM | 1060314002 | Jim Irby | This shot should be a PLC control 50 kA TF test with a 3 s flattop.
Nice 50 kA pulse with long flattop - #49 resistance 2.05 u, lower that last Friday |
| Mar 14 2006 09:41:59:537AM | 1060314003 | Jim Irby | 150 kA, 2 s flattop TF pulse
TF scanner looks great #49 resistance 1.88 u --- very good now back to EF3.... |
| Mar 14 2006 09:54:31:973AM | 1060314004 | Jim Irby | phase rotation relay has been replaced on EF3 supply
pulled again --- not the relay... |
| Mar 14 2006 12:57:37:177PM | 1060314004 | Jim Irby | scanner data looks fine |
| Mar 14 2006 12:57:51:820PM | 1060314005 | Jim Irby | scanner data looks fine |
| Mar 14 2006 12:58:46:943PM | 1060314006 | Jim Irby | turn #49 back up to 9 uohm on the scanner, even though we have had no current other than the PEI in the magnet. |
| Mar 14 2006 02:01:57:473PM | 1060314008 | Jim Irby | looks like we know the problem --- bad switch contact in EF3 supply
this shot will be a PLC test of EF3 got EF3 current --- looks good |
| Mar 14 2006 03:50:47:663PM | 1060314009 | Bruce Lipschultz | First shot of the day! 3:45 PM.
1 MA plasma, nl04 ~ 1. Inner gap a little too large. But otherwise a very good shot. Next shot aim for NINJA puff of D2 from inner all coming in around 0.7s. Hold off on B dust for now. |
| Mar 14 2006 03:56:07:677PM | 1060314009 | Jim Irby | Try for plasma
Willy has shifted tap #49 cables over to tap #67 inputs. Hope to see if we have a problem with the input relays. Taps around #67 are now disconnected. Plasma!! See what looks like boron at c-hor on the wide 2 camera. Could be material I put in during the test yesterday. No boron injector pulses were programmed for this shot. Did not see a problem with #49 on the scanner at its new position. 50 kA backporch resistance 1.96 u |
| Mar 14 2006 03:51:12:693PM | 1060314010 | Bruce Lipschultz | Fizzle |
| Mar 14 2006 04:11:28:880PM | 1060314011 | Jim Irby | plasma
only two particles seen on wide 2 this time something fell down TCI port. Channels 4, 5, 6, and 7 see big drop in signal levels for 75 ms. |
| Mar 14 2006 04:14:22:960PM | 1060314011 | Bruce Lipschultz | Good shot. H-modes again. NINJA on. Looks like good data.
Next shot same settings in general but shake the B to come in around 0.9 s. |
| Mar 14 2006 04:23:50:380PM | 1060314012 | Jim Irby | Will try to run boron injector for this shot: start 0.25 s, 34 Hz, 50% duty cycle, 4 pulses (should be about 4 mg): [.25,34,50,4]
lots of boron seen on wide 2. |
| Mar 14 2006 04:25:22:163PM | 1060314012 | Bruce Lipschultz | Good shot. H-modes again. NINJA on. Looks like good data.
The B dust came in around 1.0 s. Move it up in time to 0.5 s. Lower the density to help J-port stay on. |
| Mar 14 2006 04:42:15:007PM | 1060314013 | Jim Irby | boron injector to: [-.25,34,.5,4]
boron should appear in plasma around 0.5 s plasma --- boron at about the right time |
| Mar 14 2006 04:47:00:880PM | 1060314014 | Jim Irby | repeat boron injection: [-.25,34,.5,4]
going upper divertor fizzle |
| Mar 14 2006 04:49:14:193PM | 1060314014 | Bruce Lipschultz | first try at USN - fizzle |
| Mar 14 2006 04:59:29:647PM | 1060314015 | Bruce Lipschultz | dud. Try again tomorrow. |
| Mar 14 2006 05:01:20:490PM | 1060314015 | Jim Irby | boron: [-.25,34,.5,4]
dud programmed injector off until tomorrow. |
| Physics Operator Comments | |||
| Mar 14 2006 07:33:43:400AM | Steve Wolfe |
Begin setting up PCS3 for today's run
Check on setup of 1051118022, potential USN. Active seg is 3
Check on setup of 1050408026, potential SSEP sweep. Active seg is 4;
needs magnetics recalc, but baseline sub is ok
Load from 1060310024 (for startup, maybe)
Import seg2 from 1051129011. Note that the source widget didn't update; bug.
Add back porch to TF waveform V_12 (from seg1)
There is a 50msec PG1 puff-leave it there
Eliminate 100ms pg2 puff
Don't know what we want for diborane puff yet, so leave it alone.
Build seg
Import seg3 from 1051118022 seg 3
Change TF to 150ka backporch
leave 40ms pg2 puff there
Note that there is no SSEP program in this seg
Note there is a B21_PROJ wire on wire 9.
Import seg4 from 1050408026 seg 4
Needs magnetics predictors be recalculated; Do it.
Notice that second SSEP wire on 12 has 3000 offset. It isn't used though.
Copy 150kA TF backporch waveform to V_12
Copy 40ms PG1 puff from seg3
Eliminate pg2 puff
Zero Acoil current on V_10
Copy wire 9 from B21_PROJ in seg2
Copy NL04 program from seg2
The CLEARIN program in this segment is strange. It has a linear
sweep from -.01 to -.03; probably a hack to accommodate
the change from LN->UN without changing the reference xpt?
The left gap is pretty steady, from EFIT.
Bruce indicates he wants both gaps bigger. I'll add 5mm across the
board and see what we get. I don't understand how this waveform
worked at all.
Build_segment 3 & 4
Check startup -
33ms on PG4
Br0=+.0001
Ic_EF4U=-1335 (seems a little positive?)
Load/Clean. Timestamp error on P16; touch and reload
Filling in configuration / 1-NOV-2005 12:26:36.00/
Filling in DPCS configuration /22-DEC-2004 09:58:59.00/
Cleaning PCS tree in /home/wolfe/pcs_scratch
Cleaning DPCS tree in /home/wolfe/pcs_scratch
about to ask alcdata to copy /home/wolfe/pcs_scratch/pcs_model to /cmod/trees/models/pcs/pcs_model
about to ask alcdata to copy /home/wolfe/pcs_scratch/dpcs_model to /cmod/trees/models/dpcs/dpcs_model
Load at 14-Mar-2006 07:33:15.00
Open tree /home/wolfe/pcs_scratch -1
Open tree done
| |
| Mar 14 2006 07:43:53:560AM | Steve Wolfe | Note that AMHD freq (V_17) in seg2 has sweep waveform. That's because I reloaded from the pulse file. It shouldn't hurt anything, but it's another annoying side effect of the way I'm doing the dpcs_ftae operation; it gets loaded by dpcs_ftae_init into the pulse file directly during INIT. Zero it out. While I'm at it, I would like to remove the test waveform from wire 20, but I can't do that in the wave-dedit widget. Need to add a ZERO and maybe an "Expression" option to the pop-up menu. Touch V17-32 widget for segs 3 and 4 so I don't get the Name complaint later. Reload Load at 14-Mar-2006 07:43:41.00 Open tree /home/wolfe/pcs_scratch -1 Open tree done | |
| Mar 14 2006 09:05:55:647AM | 1060314001 | Steve Wolfe | Shot#1: EF3 test (PLC control) No gas enabled on this shot. Breaker pulled entering pulse. Still not fixed. Proceed with TF tests before dealing with EF3. |
| Mar 14 2006 09:26:22:333AM | 1060314002 | Steve Wolfe | Shot#2: TF-only 50kA PLC control test TF pulse ran ok. MB49 is at 120mV, lower than MB50. Also, note that there is a substantial baseline offset on #49, about +20mV, which I hadn't noticed before, but it was in fact there last week. |
| Mar 14 2006 09:39:38:163AM | 1060314003 | Steve Wolfe | Shot#3: TF-only 150kA PLC control test pulse went ok, MB#49 at 300mV~2uOhm. It's back to being the highest resistance, but not too bad. Scan still looks good. TF seems ok. Why the scans were high last week remains a mystery, but warming up over the weekend seems to have "fixed" it. We will now have a short break while Bill works on the EF3 breaker interlock. |
| Mar 14 2006 09:55:10:630AM | 1060314004 | Steve Wolfe | Shot#4: The EF3 phase rot relay has been replaced. This will be another EF3 test (PLC control) Breaker pulled again at entry to pulse. Still not fixed. |
| Mar 14 2006 12:19:09:553PM | 1060314004 | Steve Wolfe | Shot#4: The EF3 phase rot relay has been replaced. This will be another EF3 test (PLC control) Breaker pulled again at entry to pulse. Still not fixed. |
| Mar 14 2006 12:20:46:520PM | 1060314004 | Steve Wolfe | Shot#4: The EF3 phase rot relay has been replaced. This will be another EF3 test (PLC control) Breaker pulled again at entry to pulse. Still not fixed. |
| Mar 14 2006 12:27:03:897PM | 1060314005 | Steve Wolfe | Shot#5: Cycle test with relay output forced, air-switch open, no excitation To test power supply status. Breaker stayed in, no other faults at PLC |
| Mar 14 2006 12:43:30:333PM | 1060314006 | Steve Wolfe | Shot#6: Yuri will remove the force during check, with excitation on. This is expected to make the breaker open, if the relay is not satisfied. And that's what happened. Need to instrument the inputs to this relay. It apparently really sees a problem. Long delay in CHECK before going to PULSE (to ramp down excitation). DPCS may timeout, not that it matters. |
| Mar 14 2006 02:00:46:070PM | 1060314007 | Steve Wolfe | Shot#7: Found a bad contact on a switch in the control rack This will be a no-demand EF3 test with excitation on. EF3 breaker stayed in. Looks like it may be fixed. Next: EF3 PLC test with current |
| Mar 14 2006 02:02:41:880PM | 1060314008 | Steve Wolfe | Shot#8: EF3 test (PLC control) Breaker stayed in. Got current. Next shot: Try for plasma |
| Mar 14 2006 02:11:13:757PM | 1060314008 | Steve Wolfe | Shot#9: Try for plasma We got a smell of smoke in the front of the control room before we could take this shot. Investigating now. |
| Mar 14 2006 02:44:13:427PM | 1060314008 | Steve Wolfe | Before shot#9: TF breaker #1 has failed. The control room switch was smoked as a result. Both need to be changed out. Estimated time between 30min and 1 hour |
| Mar 14 2006 03:43:46:397PM | 1060314009 | Steve Wolfe | Shot#9: Try for plasma (again) plasma full length. 1MA Got an H-mode late. Some RF from all transmitters. Startup looks fair, no bounces, maybe a little late. next shot: Want less gap, adjust clearin |
| Mar 14 2006 03:49:51:617PM | 1060314010 | Steve Wolfe | Shot#10: CLEARIN reduce by 3mm Fizzle, probably should have backed off on the gas next shot: PG4 down by 3ms |
| Mar 14 2006 04:06:30:270PM | 1060314011 | Steve Wolfe | Shot#11: PG4 from 33ms to 30ms and IC_EF4 from -1335 to -1345 CLEARIN reduced by 3mm from shot 9 plasma to 1.8sec, left gap about 1.4cm. Late breakdown, around 10ms. Next: ef4 back to -1335 |
| Mar 14 2006 04:22:54:897PM | 1060314012 | Steve Wolfe | Shot#12: EF4 from -1345 to -1335; pg4 down another 2ms to 28ms Irby will shake boron this time. plasma to 1.8sec, breakdown is earlier, decent startup Boron snow seen on wide2 view Next shot: reduce nl04 to 0.8e20 |
| Mar 14 2006 04:35:38:757PM | 1060314013 | Steve Wolfe | Shot#13: reduce nl04 to 0.8e20 plasma to 1.9sec. Slight hesitation in startup. next shot: go to upper null |
| Mar 14 2006 04:48:50:163PM | 1060314014 | Steve Wolfe | Shot#14: go to upper null: Seg 2 off, seg3 on; copy NL04 from seg2 to seg3 pg4 from 28ms to 26ms Fizzle. Early breakdown; looks like I didn't drop it enough? Br0 went a little negative. next shot: PG4 from 26 to 24ms |
| Mar 14 2006 04:58:43:333PM | 1060314015 | Steve Wolfe | Shot#15: PG4 from 26 to 24ms still trying for upper null Dud. Dropped it too much End of Run. |
| Engineering Operator Comments | ||||
| Shot | Time | Type | Status | Comment |
| 1 | 09:03:34:287AM | Test | Bad | EF3 PS CB Test |
| 2 | 09:19:20:333AM | Test | Ok | TF 50kA PLC Test Pulse |
| 3 | 09:32:29:740AM | Test | Ok | TF 150kA PLC Test Pulse |
| 4 | 09:52:59:397AM | Test | Bad | EF3 Breaker Pulled |
| 5 | 12:21:17:677PM | Test | Ok | EF3 Breaker Test |
| 6 | 12:40:21:943PM | Test | Ok | EF3 Breaker test |
| 7 | 01:47:16:210PM | Test | Ok | EF3 Breaker Held In |
| 8 | 02:00:21:693PM | Test | Ok | EF3 PLC Test |
| 9 | 03:32:56:770PM | Plasma | Ok | |
| 10 | 03:47:30:570PM | Plasma | Ok | |
| 11 | 04:00:02:147PM | Plasma | Ok | |
| 12 | 04:15:41:320PM | Plasma | Ok | |
| 13 | 04:30:32:117PM | Plasma | Ok | |
| 14 | 04:44:41:367PM | Plasma | Ok | |
| 15 | 04:57:05:397PM | Plasma | Ok | |