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| Operators | |
| Session leader(s): | Jerry Hughes,Brian Labombard,Dave Terry,Brian Labombard,Jason Sears |
| Physics operator(s): | Steve Wolfe |
| Engineering operator(s): | Bill Byford,Bill Parkin |
| Engineering Operator Run Comment |
| MP#452 Reversed Field Pedestal Studies PO:Wolf SL:Hughes EO:Fitzgerald,B |
| Session Leader Plans |
| Entered: Jun 1 2006 01:23:07:837PM |
| Author: Jerry Hughes |
| MP452: Reversed field pedestal studies
SL: Hughes PO: Wolfe The goal for this experiment is to acquire and characterize H-modes and pedestals with the direction of field and current reversed, in order to make a comparison with similar discharges in the normal configuration. We will attempt to run a range of currents and densities in this configuration, tracking pedestal parameters (both dimensional and dimensionless), confinement and edge fluctuations. How these quantities differ between forward and reversed field will be studied and analyzed. Also of interest is comparing local L-H threshold conditions with those in the forward-field case. This run will continue the experiment begun on May 24, when shots were limited due to run delays and boronization recovery. We will start with a successful ICRF-induced H-mode from that day and proceed with the current and density scan. In particular, we will keep our eyes out for the quasi-coherent mode and the possible appearance of ELMs. SETUP: *There will be NO overnight boronization. Retain the option of doing between-shot boronization, using the 10% diborane mixture. *Required diagnostics: Edge and core Thomson, ECE diagnostics, CXRS, visible continuum, bolometer arrays, PCI, fast D-alpha diodes, Hirex, NeSoX. *Gas: --NINJA plenum loaded with 10psi D2 --Argon/Neon puff: 50ms at 0.3s (Neon at 1psi, Argon at 1psi) *RF power requested: 0.70--0.95s: 3.0MW flat 0.95--1.20s: 3.5MW flat 1.20--1.50s: 4.0MW (or max available) flat Multipactoring and/or vacuum condition before run as RF group deems necessary to promote useful J-port operation. Tentative shot sequence (subject to change, depending on how the run is going): 1. Load 1060524019 (LSN 5.4T, 0.8MA rev.; nl04~8e19m^-2). Obtain H-modes of duration greater than 150ms. 2. Attempt to change edge collisionality by scanning target nl04. Raise nl04 in increments of 2e19m^-2 until H-modes can no longer be obtained at the available power. Then lower nl04 in increments of 2e19m^-2, going no lower than 5e19m^-2. 3. Go to 1.1MA, target nl04=1e20m^-2. Repeat step 2. 4. Go to 0.5MA, target nl04=6e19m^-2. Repeat step 2. |
| Entered: Jun 2 2006 04:57:22:410PM |
| Author: Jason Sears |
| Model shot is 1060526024 but use 1060526032 for tuning J ant.
Will try for 1MW RF from J antenna from 0.5 to 1.5s. Pending success of first shot and time, will try for 0.5MW and 0MW. |
| Physics Operators Plans |
| Entered: Jun 1 2006 02:11:48:927PM |
| Author: Steve Wolfe |
Engineering setup and Physop plan for Friday, 2-Jun-2006 **** NO OVERNIGHT BORONIZATION **** Overnight ECDC in D2, bake at 60C Run starts at 09:00 (lockup at 08:30) and ends at 17:00 Reserve the option for between-shot boronization later in the day (10% bottle) MP#452 Reversed Field Pedestal Studies SL: Hughes PO: wolfe Power System setup as on 1060524019 Acoil taps [-Dtop +Dbot +Jtop -Jbot] enabled Gas setup: fill B-Top with 6 psi D2 Hybrid enabled (PG4) fill B-side lower with 1 psi Ar + 1 psi Ne Hybrid Enabled (PG1) leave B-side upper as is Hybrid DISABLED (PG2) fill B-main (C-side) with 40 psi D2 Hybrid enabled (PG3) NINJA plenum loaded with 10psi D2 Enable the following gate valves and shutters, assuming no vacuum problems: ECE, VUV, Z-bolo shutters. DO NOT ENABLE DNB unless authorized by Physop. TORVAC: Gate valves open FMIT#1,2,3,4 in RUN-ON by 08:30 (if they aren't already on by then) RF Request - three levels per shot: 0.70 to 0.95s: 3.0MW 0.95 to 1.20s: 3.5MW 1.20 to 1.50s: 4.0MW (or most available) Physop plan ----------- Load from 1060524019 (LSN +5.4T, +0.8MA, nl04~8e19) (or import_seg 2) (Note NL_04 program is set to 9e19) PG1 puff is 50ms (from 0.3sec) Get H-modes lasting >0.150 sec (we hope) Raise nl04 by 0.2e20 per shot until we lose the H-modes Lower nl04 from initial value in similar increments to no lower than 5e19 Increase Ip to 1.1MA, nl04 to 1.0e20. Repeat density scan Lower Ip to 0.5MA, nl04 to 0.6e20. Repeat density scan Finish Run. Declare Success. Go on Vacation. |
| Session Leader Summaries |
| Entered: Jun 2 2006 05:26:52:140PM |
| Author: Jason Sears |
| This session used left-over shots from the run to fill in the 1MW shot from 1060526024, addressing the 'RF power dependence' part of MP404a.
Shot 29 was good but RF tuning was a bit off since this was the first RF shot at that density. Thankfully people hung around after 5pm (on a Friday!) to attempt another shot: Shot 30 RF was very nicely retuned, plasma was full length, and Active MHD amplifier worked great. Analysis will hopefully reveal nice resonances. |
| Entered: Jun 2 2006 10:40:40:213PM |
| Author: Brian Labombard |
| Run Summary for part of 1060602 MP#409 "SOL Phase space studies" - Reversed field Because of the problem in getting AC power to the D and E-port ICRF transmitter systems after shot#11 (see physop summary), we ran some ohmic discharges in support of MP#409. We managed to complete the density scan started on 1060531, recording data in the range of 1.0e20 < NL04 < 1.4e20 for both LSN and USN. The A-port probe ran well, despite poking it deep into a low density plasma (shot#21). Today's data in combination with that from the 1060531 run should give us a fairly complete picture of how the edge flows and profiles behave in reversed field. ___________________________________________________________________________________ Quick shot log 12- LSN, NL04=1.06-1.2, Ip=0.8MA, ASP(+5), ISP (22ms) 13- no power shot 14- LSN, NL04=0.99-1.1, Ip=0.8MA, ASP(+9) good, ISP (22ms) good 15- LSN, NL04=1.3 upper x-point MARFE, Ip=0.8MA, ASP(+10) good, ISP (22ms) ok Turned over run to LH group for shots 16-20 21- LSN, NL04=0.35, Ip=0.8MA, ASP(+10) way over-inserted, EAST shorts, ISP (22ms) ok 22- LSN, NL04=1.05-1.27, Ip=0.8MA, ASP(+10) excellent, ISP (22ms) good 23- LSN, NL04= 1.05-1.27, Ip=0.8MA, ASP(+10) good, ISP (22ms) ok 24- fizzle 25- LSN, NL04= 1.1-1.4, Ip=0.8MA, ASP(+11) good, ISP (22ms) ok 26- USN, NL04=1.25, Ip=0.8MA, ASP(+12), ISP (22ms) 27- fizzle 28- USN, NL04=1.4, Ip=0.8MA, ASP(+12) great, ISP (22ms) 29- USN, NL04=0.77, Ip=0.8MA, ASP(+11), ISP (22ms) Turned over final shots of run to Jason Sears |
| Entered: Jun 5 2006 03:42:56:630PM |
| Author: Jerry Hughes |
| MP452: Reversed field pedestal studies SL: Hughes PO: Wolfe The goal for this experiment was to acquire and characterize H-modes and pedestals with the direction of field and current reversed, in order to make a comparison with similar discharges in the normal configuration. The plan was to run a range of currents and densities in this configuration, tracking pedestal parameters (both dimensional and dimensionless), confinement and edge fluctuations. In particular, we sought the quasi-coherent mode and the possible appearance of ELMs. Also of interest was comparing local L-H threshold conditions with those in the forward-field case. This experiment was prematurely terminated, because of a power panel failure that affected the D and E-port ICRF transmitters. Prior to this failure, we did manage to do a density scan at 0.8MA, 5.4T. Programmed target nl04 for these shots was in the range of 0.8--1.3e20m^-2, and there was generally a fueling enhancement above this whenever RF power was applied to the discharge. The RF group was able to adjust the tune adequately to initiate and sustain several H-modes. Shots 6 and 8 are the best examples, although there were also underpowered H-modes of short duration on shots 2, 5 and 7. Te,95 at the transitions was in the neighborhood of 400eV, with grad-Te of 50--100keV/m. The edge temperature increase after the L-H transition was substantially reduced as the density was raised, such that on shot 8, the H-mode Te,95 was barely above 400--500eV. This shot had a relatively collisional edge (nu*>~2), and exhibited ELMy or dithering features, which were more prevalent at lower Te. It is possible that these were Type III or similar ELMs, thought they look rather large. Shot 6 had a more moderate collisionality (nu*<~1), and showed signature of a weak quasi-coherent mode. We didn't get enough shots in to firmly establish either an upper or a lower density limit in these discharge conditions. This was the last day of reversed-field operation of this campaign, and we unfortunately only scratched the surface of this MP before it had to be scrapped. It showed promise, however, and should be revisited in another campaign, with optimal ICRF operation. L-H transitions: Shot time(s) 002 1.006 002 1.187 005 0.818 006 0.826* 006 1.024 006 1.171 007 1.290 008 0.829 008 1.033* *=H-mode period >150ms |
| Physics Operator Summaries |
| Entered: Jun 2 2006 06:10:21:970PM |
| Author: Steve Wolfe |
Physics Operator Summary for Friday, 2-Jun-2006
MP#452 Reverse Field Pedestal Studies SL: Hughes
and
MP#409 SOL Phase Space SL: Labombard
and
MP#418 (sort of) LH CPS testing SL: D. Terry
and
MP#404a Alfven damping SL: Sears
The tokamak ran quite well today, and we got data on a number
of experiments, on the last day of reversed field operation for
the FY06 campaign. The major problem was the failure of an AC
breaker providing control power to FMIT#1 and 2 (D- and E-port
ICRF), which forced us to stop the planned MP#452 experiment after
shot#11. This was unfortunate, since we were getting some good
data in a scan of collisionality, and identified a regime with
rather large frequent ELMs at fairly high density. To that point
the RF was succeeding in getting in power up to ~4.3MW. Best results
at higher density were obtained with the Ar-Ne puff from PG1 turned
off. There were problems with injections on these discharges as well,
but some useful datapoints were obtained. It looked like the injections
were mostly associated with something overheating during the high
power RF.
Once it was determined that we were unable to continue running
D- and E-port, the run was turned over to other experiments in
an effort to complete, or at least get additional data, for other
programs. Brian (SL of last resort, as usual) got additional data
at high density. up to 1.4e20/m^2 in both lower and upper null,
and picked up one upper null intermediate point at 0.8e20. These
shots were based on 1060531029, with the LSN cases tweaked to increase
the current rise and slow down the density rise, to try to avoid
marfing. The higher density cases also had the argon-neon off.
During an hour when Brian had to be away for an appointment,
Dave Terry and the LH group got some dedicated shots, one with
ICRF from J-port, to try to debug the CPS trip circuits. LH tried
to piggyback during the morning and again on the ohmic run when
Brian returned, but had to retract the launcher when high density
discharges provoked alarms for excessive probe currents. I think
some progress was made during the dedicated shots, which were based
on the last successful LH run (in forward field) trophy shot 1060511016.
I loaded this shot (seg2) into seg4 and did the prescribed flips
and predictor recalculations, and managed to get these correct.
The reversed shots ran ok except that they were very prone to runaways.
Trying to tune the startup to avoid the runaways was not notably successful.
This part of the run was supposed to be shots#16-20, but I screwed up
and forgot to load the shot after switching back to seg2, so shot #21
was also a low density LH target. Fortunately, Brian's ASP survived,
and may have even cleaned up a little, after he poked well past the LCFS
thinking he had his previous target back.
The last two shots were run to pick up the 1MW point from the MP404a
run from last Friday, based on 1060526024, which I loaded in seg4.
Both shots ran well, and the RF on shot#30 was good, so Jason should be
able to fill in that datapoint. Since the DNB was non-functional today
we won't have active CNPA tail data, of course.
Shot #13 was lost (no power shot) because of an INITFAIL error. The same
error occurred on #14, but we ran it anyway and it ran fine. It turned
out that the TCI Jorway INIT (which is marked as a critical action) was
failing because an invalid gate had been entered for an output used for
the polarimeter. This was corrected (after the output was turned off for
shot#14).
We had one oh1 self-power-circuit fault after a disruption on shot#9. No fuse
or device loss was found.
Scorecard:
----------
Tests/No Power 1
Duds 0
Fizzles 2
Plasmas 27 (4 pre-rampdown disruptions)
============== ==
Shots 30
|
| Session Leader Comments | |||
| Jun 2 2006 09:29:10:677AM | 1060602001 | Jerry Hughes | First shot is a reload of 1060524019, with some modification to the early current
trace. Injections, followed by disruption at 0.93s. RF was a clean 3.1MW up to that point. Extra fueling when RF turns on brings the nl04 from ~8e19 to ~1.1e20. No L-H transition; edge grad-Te gets into the 50-100keV/m range, so it's probably close. Next shot: Repeat. Try to maintain the discharge with the additional increases in RF power. |
| Jun 2 2006 10:08:17:350AM | 1060602002 | Jerry Hughes | Shot ran full length. 2 H-modes at 3.3--3.4MW ICRF. Threshold Te95 is in the
400--500eV range, with gradTe~50--100keV/m. Each L-H transition causes RF to trip out. L-mode density rise during RF is similar. Next shot: Retry with improved RF tune. |
| Jun 2 2006 09:56:54:080AM | 1060602003 | Jerry Hughes | Injection. Disruption at 0.87s.
Next shot: Steve will try to increase the outer gap 2--3mm. |
| Jun 2 2006 10:02:44:567AM | 1060602004 | Jerry Hughes | Disruption at 0.29s.
Next shot: Retry. |
| Jun 2 2006 10:27:24:800AM | 1060602005 | Jerry Hughes | Full length discharge. Initial L-mode density rise during RF is lower than on
previous shots. H-mode is triggered with only 2.9MW. Again, the RF faults all the way out, leading to H-L back-transition. Radiation is elevated the remainder of the shot, so no more H-modes. Next shot: Turn off Ne puff. |
| Jun 2 2006 10:49:28:573AM | 1060602006 | Jerry Hughes | Good shot. Got fairly clean RF into sustained H-modes, largely ELM-free by the
looks of the radiation rise. Some activity on the H-alpha, but it looks more coherent than ELMy. Magnetics show something that looks a broken QCM. Transition Te and grad-Te look similar to before. Think we'll keep Ne off for a while. Next shot: raise nl04 2e19. |
| Jun 2 2006 10:40:57:947AM | 1060602007 | Jerry Hughes | Increased density program. nl04 reaches 1.3e20 during RF. E-port has trouble, so
we never really reach full power. Looks like a dithering H-mode at 1.28s, triggered without a lot of total power. Radiated power is pretty low throughout. Next shot: Try for cleaner RF. |
| Jun 2 2006 11:14:25:693AM | 1060602008 | Jerry Hughes | H-modes. Either dithers or some kind of ELM activity evident in the H-modes.
The spikes in H-alpha are reflected in the bolo signal and the RF power. They seem to predominate when the Te gradient is at its lowest (~100keV/m, close to the local L-H threshold value) and edge collisionality is relatively high. Are these Type III ELMs or something similar? Next shot: Raise nl04 program 2e19. |
| Jun 2 2006 11:00:01:577AM | 1060602009 | Jerry Hughes | Disruption at 0.53s.
Next shot: retry. |
| Jun 2 2006 11:39:47:217AM | 1060602010 | Jerry Hughes | Full length shot, nl04 at 1.3e20. D+E have a tough time coupling. No H-mode.
Next shot: Retry. |
| Jun 2 2006 12:20:19:483PM | 1060602011 | Jerry Hughes | Full length shot, nl04 gets up to 1.4e20. D+E still faulting. No H-mode.
Next shot: There is no next shot for this MP. Transmitters 1+2 cannot be run anymore due to a bad breaker panel. That leaves only J-port, which is insufficient for H-mode studies. Turn run over to Brian for ohmic studies. |
| Jun 2 2006 12:44:05:687PM | 1060602012 | Brian Labombard | Shot 12 LSN, NL04=1.06-1.2, 0.8MA, 5.4T REVERSED, ASP, ISP scanning at 0.65, 0.85, 1.05s ASP - 5mm outside, cleaning up ISP - good Next: Repeat with 2mm smaller outer gap, argon turned on, ASP deeper |
| Jun 2 2006 03:04:07:790PM | 1060602015 | Brian Labombard | Shot 15 LSN, NL04=1.3, 0.8MA, 5.4T REVERSED, ASP, ISP scanning at 0.65, 0.85, 1.05s uupper x-point MARFE ASP - ok ISP - ok. Inner wall is very cold. Next: turn over run to LH group |
| Jun 2 2006 03:33:43:220PM | 1060602021 | Brian Labombard | Shot 21 LSN, NL04=0.35, 0.8MA, 5.4T REVERSED, ASP, ISP scanning at 0.65, 0.85, 1.05s Oops! This was a reload of shot#20 with small outer gap. ASP - way over-inserted! EAST electrode shorted out. ISP - ok. Next: try for reload of shot#15 again. |
| Jun 2 2006 03:36:56:630PM | 1060602022 | Brian Labombard | Shot 22 LSN, NL04=1.05-1.27, 0.8MA, 5.4T REVERSED, ASP, ISP scanning at 0.65, 0.85, 1.05s ASP - excellent! ISP - good. Next: Try for slightly higher density. Turn argon off. |
| Jun 2 2006 03:56:19:900PM | 1060602024 | Brian Labombard | Shot 24 LSN, NL04=1.1-1.4, 0.8MA, 5.4T REVERSED, ASP, ISP scanning at 0.65, 0.85, 1.05s ASP - good. ISP - good. Next: Go to USN, NL04=1.2 |
| Jun 2 2006 04:14:45:830PM | 1060602025 | Brian Labombard | Shot 25 USN, NL04=1.25, 0.8MA, 5.4T REVERSED, ASP, ISP scanning at 0.65, 0.85, 1.05s ASP - good. ISP - good. Next: Go to NL04=1.4 |
| Jun 2 2006 04:42:42:390PM | 1060602027 | Brian Labombard | Shot 27 USN, NL04=1.4, 0.8MA, 5.4T REVERSED, ASP, ISP scanning at 0.65, 0.85, 1.05s ASP - good. ISP - good. Next: Go to NL04=0.8 |
| Jun 2 2006 04:55:27:660PM | 1060602028 | Brian Labombard | Shot 28 USN, NL04=0.77, 0.8MA, 5.4T REVERSED, ASP, ISP scanning at 0.65, 0.85, 1.05s ASP - great. ISP - good. Next: turn over final shots of run to Jason |
| Physics Operator Comments | |||
| Jun 2 2006 07:26:32:530AM | Steve Wolfe | Setting up for MP#452 on 1060602 Using PCS3-Beta (v3.0.3) Import Seg2 from 1060524019 (+0.8MA, SNL) This is one of those shots with the screwy ZCUR programming and the slow Ip rise. The ZCUR is supposed to be part of the elongation and shaping program, which I guess is what Jerry asked for. I think the current program is just a mistaken holdover from some earlier case. I'm going to change that to get to flattop 800ka at 0.2sec instead of 0.4, and raise the .1sec point to 550ka from 450kA Seg1 is kept from yesterday: PG4=21ms,Rcur offset -1200,Br0=0,EF4=1320. It looked to me like the gas was a little high and Bz was too positive, but the startups ran ok mostly, so I'll leave these alone to start with. Load/clean, get warnings on p9 and p11 in seg02, touch these up. Load at 2-Jun-2006 07:25:45.00 Open tree /home/wolfe/pcs_scratch -1 Open tree done | |
| Jun 2 2006 06:39:12:810PM | Steve Wolfe | After end of Run 1060602 (Friday, 2-Jun-2006) Change Hybrid tree back to proper configuration for NORMAL FIELD. Change \HYBRID::TOP.CONFIG:PF_POLARITY and \HYBRID::TOP.CONFIG:TF_POLARITY from 1.0 to -1.0 Add description to \HYBRID::TOP.CONFIG:CONFIG_ID Add line for dpcs_fizzle source_shot to \HYBRID::TOP.DPCS_CONFIG:CONFIG_ID Change \HYBRID::TOP.DPCS.LOADABLES.PROCEDURES:ASYNC_PROS:PROCEDURE_01:SOURCE_SHOT to 1060308026 for normal field dpcs_fizzle source. Note that PCS-Beta will still squawk about the dpcs_config value, but the loaded source_shot is now correct, as long as noone reloads a shot from the past three weeks on top of it. I still need to run the routine to change the non-axi coefficients for the error fields back to a normal surface. Need to check the logbook entry for how I do that. | |
| Jun 2 2006 09:27:01:287AM | 1060602001 | Steve Wolfe | Shot#1: plasma to 0.93sec, injections start at 0.89 startup looked ok, Bz a bit +ve, pressure around .050Torr next: repeat and hope the injections go away. |
| Jun 2 2006 09:37:47:790AM | 1060602002 | Steve Wolfe | Shot#2: no pcs changes. plasma full length, two h-modes. Still seeing injections, last RF step gets to 4.25MW briefly starting pressure was up to .060Torr,current rise a little slow. next: repeat so rf can tune to h-mode load |
| Jun 2 2006 09:50:09:857AM | 1060602003 | Steve Wolfe | Shot#3: no pcs changes. plasma disrupts at 0.86, injections start at 0.835, looks like something heating up, probably k-limiter and/or the bottom of D-antenna. next: try increasing the outer gap a little |
| Jun 2 2006 10:02:27:503AM | 1060602004 | Steve Wolfe | Shot#4: rcur from .0660 to .6585, starting at 0.8sec (previous point is [.379,.660] ramp in during rampdown starting at 1.5 instead of 1.7 No startup change, last one bounced a little. plasma disrupted at .29sec, before rf or the rcur change. Also before the neon puff. some runaways early, not bad. Probably loose stuff left around from previous disruption caused this one. next: try again |
| Jun 2 2006 10:14:53:767AM | 1060602005 | Steve Wolfe | Shot#5:try again plasma full length, with some flinches. h-mode around .8sec, marfe around 1.2sec D-port lighting up top and bottom this time Klimiter lights up (refection in boron camera view) before the marfe. next: turn off pg1 for a shot or so |
| Jun 2 2006 10:24:56:267AM | 1060602006 | Steve Wolfe | Shot#6:repeat without pg1 puff (was 50ms) plasma full length bounce in startup, some runaways dump at .29, at an injection (which caused which?) still seeing injections during the rf next: raise density by 2e19 (nl04) |
| Jun 2 2006 10:36:59:693AM | 1060602007 | Steve Wolfe | Shot#7:raise nl04 from 9 to 11e19, add 10V of pg3 after .3sec plasma full length, no h-mode; maybe a dither around 1.3? E had lots of faults after 1sec, J was happy startup looks cleaner, no bounce but a slight outward swing, no runaways this time. next: try again, rf tuning |
| Jun 2 2006 10:51:54:620AM | 1060602008 | Steve Wolfe | Shot#8: repeat after rf tuning plasma full length, dithers but doesn't look like sustained h-modes. Maybe ELMs? Whatever they are, they show up on the rf loading, but rf mostly hangs in there. next: NINJA puff at 1.2sec, also raise nl04 another 0.2e20 |
| Jun 2 2006 11:04:03:783AM | 1060602009 | Steve Wolfe | Shot#9:nl04 from 1.1 to 1.3e20, NINJA puff at 1.2sec (inner wall) no startup change, despite the big bounce on the last one plasma disrupts at .538sec, pf breaker pulled (oh1 after the disruption) Injection at .533sec. Startup looked fine, no runaways. next: repeat, no changes |
| Jun 2 2006 11:16:51:007AM | 1060602010 | Steve Wolfe | Shot#10:nl04 still programmed 1.3e20, NINJA puff at 1.2sec (inner wall) plasma full length. no h-mode. D&E were faulting, both gone by 1.2sec, J looks good. startup ok. next: repeat, rf tuning |
| Jun 2 2006 11:42:36:767AM | 1060602011 | Steve Wolfe | Shot#11: repeat, rf tuning Cell access for LH launcher to move back (* 2A probe current warning) plasma full length, no hmode. D&E still faulting, about the same as before. J still looks good. RF PLC heartbeat alarms went off after the shot. Power room access to investigate. |
| Jun 2 2006 12:02:22:040PM | 1060602011 | Steve Wolfe | There will be a delay (minimum of 30minutes) while the RF Group deals with the fallout from their PLC power failure. |
| Jun 2 2006 12:42:11:873PM | 1060602012 | Steve Wolfe | Shot#12: Changing over to run Brian's MP#409 because D&E will not be available the rest of the day, Import seg2 from 1060531029 Tweak ip rise, nl04 rise, turn off b-side lower Import seg3 from same place, for upper null case later. plasma full length next: enable bside lower, 2mm smaller outer gap. |
| Jun 2 2006 12:56:18:033PM | 1060602013 | Steve Wolfe | Shot#13: enable bside lower, increase rcur by 1mm Ack failure - no power shot. |
| Jun 2 2006 01:21:52:777PM | 1060602014 | Steve Wolfe | Shot#14: enable bside lower, increase rcur by 1mm (from shot#12) Had another init failure on camac, not clear what it is; only thing that could possibly be on a critical list is rf transmitter jorway. took the shot anyway, it ran ok, disrupts in rampdown. |
| Jun 2 2006 01:31:59:970PM | 1060602015 | Steve Wolfe | Shot#15:increase nl04 from 1.3 to 1.4e20, pg3 maint level to 20V plasma with marfe. Brian off to appointment. Changing over to LH for awhile. |
| Jun 2 2006 01:50:26:710PM | 1060602016 | Steve Wolfe | Shot#16:load seg2 from 1060511016 into seg4 Flip allp's ef2by ef4, ic_ef4, ip all_v's: flip wires 1-9, 10,11 recalculate predictors:rcur, zcur2, zcur3, clearin, rxl, zxl, rxu, zxu, and b21_proj (for reverse field). seg2 off seg 4 on. And I found a bug in the PCS beta. I'm calling an old version of get_proc_params out of the dpcs directory when I try to bring up the edit proc widget! Can load it anyway. Give it a go. Plasma! I must have gotten at least most of those changes done correctly nl04=6e19, currents are ok. startup current very slow No RF and LH didn't get included in the tree, aside from that everything ran as planned. |
| Jun 2 2006 02:08:15:903PM | 1060602017 | Steve Wolfe | Shot#17: Repeat LH target shot. I'm probably going to want to up the pre-puff a little for these low densities. plasma full length, looked like some runaways on the tv. One big bounce, there were some runaways. Got LH this time, no obvious rf pulse? The rf may have a camac problem. Crate off-line? |
| Jun 2 2006 02:39:25:870PM | 1060602018 | Steve Wolfe | Shot#18: Draw a 40ms waveform for pg1, increase pg4 in seg1 from 21 to 23ms Load at 2-Jun-2006 14:17:55.00 Exit and restart PCS, verify that it doesn't fail on call to dpcs_get_proc_params() Cell access for LH Plasma, runaways. Looks like LH may have affected the runways? Still no J-port. next: try increasing rcur offset to -1800 |
| Jun 2 2006 02:51:00:460PM | 1060602019 | Steve Wolfe | Shot#19: : try increasing rcur offsetfrom -1200 to -1800 Risking a fizzle, trying to kill the runaways. Still had runaways, plasma full length, definitely seeing the synch. rad. on the cameras. Nl04 down to 3e19 on this shot! I may need to add some pg3. RF faulting but at least it came on this time. |
| Jun 2 2006 03:07:34:180PM | 1060602020 | Steve Wolfe | Shot#20: #19 still bounced hard outside. I'm going to try RAISING EF4 from 1320 to 1340 (more positive) and see if that makes Bz swing faster. LH is going to point the other way. Plasma, still bad runaways, still seeing the synch. rad. on the rhs of wide 2. Looks like we may have gotten some RF this time, about 1MW on J, LH still having a lot of retries. next:Back to Brian's run, same as 15 |
| Jun 2 2006 03:27:52:813PM | 1060602021 | Steve Wolfe | Shot#21: Back to Brian's run, same as 15 (seg2 on, seg4 off). Startup on 20 actually seemed a little better, leave it alone since this one will be back to higher density. OOPS! I changed the segments and didn't do the load! Got another LH case. I hope Brian's probes survived. Next: Load it this time, and try again. |
| Jun 2 2006 03:30:21:580PM | 1060602022 | Steve Wolfe | Shot#22: Back to Brian's run, same as 15 (seg2 on, seg4 off - really) Runaways are worse! plasma until 1.7 sec or so. Didn't marfe, but saturating runaways until about 1sec next: Jason is here, he says the amp is on. I'll turn the routine on for shot 23 |
| Jun 2 2006 03:41:21:913PM | 1060602023 | Steve Wolfe | Shot#23: Jason is here, he says the amp is on. I'll turn the dpcs_ftae2 routine on for shot 23 and he can piggyback for awhile. Brian says his probe is ok. Increase nl04 from 1.4 to 1.5e20, pg1 waveform to zero. Leave startup as is, hope the wall loading takes care of it. Fizzle. Looks like an injection at 15msec, plasma moving IN. Next: drop pg4 back to 21ms |
| Jun 2 2006 03:52:59:573PM | 1060602024 | Steve Wolfe | Shot#24:drop pg4 from 23 to 21ms. plasma to 1.7sec, no runaways this time. nl04=1.4e20, no marfe. next: upper null, 1.2e20 |
| Jun 2 2006 04:08:14:437PM | 1060602025 | Steve Wolfe | Shot#25: seg2 off seg3 on NL04 program=1.3e20, pg1 puff in seg3 off Import Jason/Joe's shot 1060526024 seg4 into seg4 Plasma upper null, nl04=1.25 in flattop, getting up a little too fast and overshooring I think. next: up to 1.4e20 (actual) Cell access for LH and Jason |
| Jun 2 2006 04:23:57:960PM | 1060602026 | Steve Wolfe | Shot#26: nl04 from 1.3 to 1.5e20, slow down rise (first high point to .55sec) Load at 2-Jun-2006 16:11:07.00 Launcher is now moved all the way back. Jason is reporting that the output of the amp is not correct; not sure why yet, it doesn't seem to be following the dpcs output. fizzle. probably should have dropped pg4 again. |
| Jun 2 2006 04:38:50:497PM | 1060602027 | Steve Wolfe | Shot#27: Pg4 from 21 to 19msec nl04 at 1.5e20, slow down rise (first high point to .55sec) plasma upper null full length, it marfed. nl04=1.4e20 next: nl04=0.8e20, USN |
| Jun 2 2006 04:50:26:423PM | 1060602028 | Steve Wolfe | Shot#28: nl04=0.8e20, USN; Argon back on (50ms) pg4 from 19 to 17ms plasma full length nl04=7.7e19 That finishes up Brian's run. Now to try to pick up the datapoint for Jason. |
| Jun 2 2006 05:05:10:600PM | 1060602029 | Steve Wolfe | Shot#29:Now to try to pick up the datapoint for Jason. Seg3 off, seg4 on, no changes to the seg4 programming Load at 2-Jun-2006 16:53:39.00 plasma full length RF tripping from .5 to .8sec Startup bounced once, no runaways. Bill will give us one more try. |
| Jun 2 2006 05:17:20:543PM | 1060602030 | Steve Wolfe | Shot#30: PG4 from 17 to 18ms plasma full length, looks like RF stayed on well. That should do it for Jason's 1MW point END OF RUN |
| Jun 2 2006 06:13:04:140PM | 1060602030 | Steve Wolfe | After End of Run (shot#30) Turn off dpcs_ftae2 routine using the PCS-Beta widget 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 2-Jun-2006 18:12:30.00 Open tree /home/wolfe/pcs_scratch -1 Open tree done |
| Engineering Operator Comments | ||||
| Shot | Time | Type | Status | Comment |
| 1 | 09:16:11:923AM | Plasma | Ok | |
| 2 | 09:28:35:913AM | Plasma | Ok | |
| 3 | 09:41:06:980AM | Plasma | Ok | |
| 4 | 09:54:47:780AM | Plasma | Ok | |
| 5 | 10:07:06:863AM | Plasma | Ok | |
| 6 | 10:19:39:970AM | Plasma | Ok | |
| 7 | 10:32:05:113AM | Plasma | Ok | |
| 8 | 10:44:29:353AM | Plasma | Ok | |
| 9 | 10:56:54:717AM | Plasma | Ok | Self powered ckt faulted caused by plasma disruption |
| 10 | 11:12:23:707AM | Plasma | Ok | |
| 11 | 11:36:20:560AM | Plasma | Ok | |
| 12 | 12:36:29:047PM | Plasma | Ok | |
| 13 | 12:54:45:940PM | Plasma | Bad | No Power |
| 14 | 01:09:46:193PM | Plasma | Ok | |
| 15 | 01:28:02:373PM | Plasma | Ok | |
| 16 | 01:45:58:070PM | Plasma | Ok | |
| 17 | 02:01:22:340PM | Plasma | Ok | |
| 18 | 02:33:25:883PM | Plasma | Ok | |
| 19 | 02:46:06:110PM | Plasma | Ok | |
| 20 | 02:58:50:867PM | Plasma | Ok | |
| 21 | 03:11:42:337PM | Plasma | Ok | |
| 22 | 03:24:30:013PM | Plasma | Ok | |
| 23 | 03:37:23:550PM | Plasma | Ok | |
| 24 | 03:50:03:477PM | Plasma | Ok | |
| 25 | 04:02:47:950PM | Plasma | Ok | |
| 26 | 04:22:01:863PM | Plasma | Ok | |
| 27 | 04:34:33:760PM | Plasma | Ok | |
| 28 | 04:47:03:343PM | Plasma | Ok | |
| 29 | 05:00:19:473PM | Plasma | Ok | |
| 30 | 05:12:51:057PM | Plasma | Ok | |