Alcator C-Mod Run 1030605 Information

Miniproposals

Miniproposal: 326

Date Filed: 8/26/2002

Title: D, E, and J-port Antenna Evaluation and Comparison

First Author: Steve Wukitch

Session Leader: Steve Wukitch (shots 1-22)

Session Leader: Yijun Lin (shots 23-31)

Operators
Session leader(s):	Steve Wukitch,Yijun Lin
Physics operator(s):	Jim Irby
Engineering operator(s):	Gary Dekow,Bill Parkin,Ed Fitzgerald

Engineering Operator Run Comment
MP#326 High Power RF; SL: Wukitch/Lin; PO: Irby; EO:Dekow/Fitz/Parkin

Session Leader Plans

Physics Operators Plans

Session Leader Summaries

Entered: Jul 7 2004 03:49:32:913PM

Author: Steve Wukitch

***********************************************************************************
05-June-2003
***********************************************************************************
Engineering setup for Thursday 1030605

MP#326 High Power RF

SL: Wukitch/Lin
PO: Irby

ECDC overnight in D2 at 2e-4 Torr, stopping by 07:00.
Bake at 60 C overnight.

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

All ICRF transmitters will be needed for this run.

Power systems the same as on 1030529025

Non-axisymmetric control coil configuration: +Dtop -Dbot -Jtop +Jbot

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 10 psi D2 Hybrid DISABLED (PG2) (for ECDC)
fill C-side with 30 psi D2 Hybrid enabled (PG3)

Enable the following gatevalves: ECE, DNB, VUV

002 Ip~1.0 MA, 5.4 T, nl~1 LSN
D: 0.75 MW [.6-1.3] sec
E: 0.75 MW [.6-1.3] sec
J: 1.0 MW [.6-1.3] sec
Result: plasma
D: ran clean
E: ran clean
J: ran multiple faults early, fewer late
PRF = 2.6 MW
003 Ip~1.0 MA, 5.4 T, nl~0.8 LSN
D: 1.0 MW [.6-1.3] sec
E: 1.0 MW [.6-1.3] sec
J: 1.5 MW [.6-1.3] sec
Result: plasma
D: ran 3 faults early
E: ran 4 faults early
J: ran max faults
PRF = 4.4 MW for brief period
004 Ip~1.0 MA, 5.4 T, nl~0.8 LSN
D: 1.25 MW [.6-1.3] sec
E: 1.25 MW [.6-1.3] sec
J: 1.5 MW [.6-1.3] sec
Result: plasma
D: ran max faults - runaway power
E: ran 1 fault
J: ran max faults - better than last shot
PRF = 5 MW for brief period
005 Ip~1.0 MA, 5.4 T, nl~0.8 LSN
D: 1.0 MW [.6-1.3] sec
E: 1.5 MW [.6-1.3] sec
J: 2.0 MW [.6-1.3] sec
Result: plasma
D: ran max faults - runaway power
E: ran 5 faults
J: ran max faults
PRF = 5 MW for brief periods
006 Ip~1.0 MA, 5.4 T, nl~0.8 LSN
D: 1.0 MW [.6-1.3] sec
E: 1.5 MW [.6-1.3] sec
J: 2.0 MW [.6-1.3] sec
Result: NTP (no EF3)
007 Ip~1.0 MA, 5.4 T, nl~0.8 LSN
D: 1.0 MW [.6-1.3] sec
E: 1.5 MW [.6-1.3] sec
J: 2.0 MW [.6-1.3] sec
Result: plasma
D: ran 4 faults - runaway power
E: ran 3 faults
J: ran max faults but better
PRF = 5 MW for brief periods
008 Ip~1.0 MA, 5.4 T, nl~0.8 LSN
D: 1.0 MW [.6-1.3] sec
E: 0 MW [.6-1.3] sec
J: 2.5 MW [.6-1.3] sec
Result: plasma
D: ran 3 faults - runaway power
E: 0
J: ran max faults - retries struggle a bit
PRF = 4.5 MW for brief periods
009 Ip~1.0 MA, 5.4 T, nl~0.8 LSN
D: 1.0 MW [.6-1.3] sec
E: 0 MW [.6-1.3] sec
J: 3.0 MW [.6-1.3] sec
Result: plasma
D: ran 3 faults - runaway power
E: ran 1 fault
J: ran max faults
PRF = 5.6 MW for brief periods
new record injected power from J for short pulses
010 Ip~1.0 MA, 5.4 T, nl~0.8 LSN
D: 1.0 MW [.6-1.3] sec
E: 1.5 MW [.6-1.3] sec
J: 3.0 MW [.6-1.3] sec
Result: plasma
D: ran 2 faults - runaway power
E: ran 1 fault
J: ran max faults - better
PRF = 5.6 MW for brief periods
011 Ip~1.0 MA, 5.4 T, nl~0.8 LSN
D: 1.0 MW [.6-1.3] sec
E: 1.5 MW [.6-1.3] sec
J: 3.0 MW [.6-1.3] sec
Result: plasma
D: ran 1 faults - runaway power
E: ran 1 fault
J: ran max faults - better
PRF = 5.6 MW for brief periods
012 Ip~1.0 MA, 5.4 T, nl~0.8 LSN
D: 1.0 MW [.6-1.3] sec
E: 1.5 MW [.6-1.3] sec
J: 3.0 MW [.6-1.3] sec
Result: plasma
D: ran 4 faults - runaway power
E: ran 1 fault
J: ran max faults - better
PRF = 6 MW for 40 msec
J4 had a screen overload and J3 ran by itself at 1.6 MW without injections
013 Ip~1.0 MA, 5.4 T, nl~0.8 LSN
D: 1.0 MW [.7-1.3] sec
E: 1.5 MW [.7-1.3] sec
J: 2.5 MW [.7-1.3] sec
Result: plasma
D: ran 4 faults - runaway power
E: ran 1 fault
J: ran max faults - better
PRF = 6 MW for 40 msec
014 Ip~1.0 MA, 5.4 T, nl~0.8 LSN
D: 1.0 MW [.7-1.3] sec
E: 1.5 MW [.7-1.3] sec
J: 2.5 MW [.7-1.3] sec
Result: plasma
D: ran 4 faults - runaway power
E: ran 1 fault
J: ran max faults - better
PRF = 6 MW for 60 msec
015 Ip~1.0 MA, 5.4 T, nl~0.8 LSN
D: 1.0 MW [.7-1.3] sec
E: 1.5 MW [.7-1.3] sec
J: 2.5 MW [.7-1.3] sec
Result: plasma
D: ran 4 faults - runaway power
E: ran 1 fault
J: ran max faults - better
PRF = 6 MW for 80 msec
016 Ip~1.0 MA, 5.4 T, nl~0.8 LSN
D: 1.0 MW [.7-1.3] sec
E: 1.5 MW [.7-1.3] sec
J: 2.5 MW [.7-1.3] sec
Result: plasma
D: ran 4 faults - runaway power
E: ran 1 fault
J: ran max faults
PRF=5.4 MW for ~0.3 sec
017 Ip~1.0 MA, 5.4 T, nl~0.8 LSN
D: 1.0 MW [.7-1.3] sec
E: 1.5 MW [.7-1.3] sec
J: 2.5 MW [.7-1.3] sec
Result: plasma
D: ran 3 faults - runaway power
E: ran clean
J: ran max faults
PRF = 5.4 MW for 80 msec
018 Ip~1.0 MA, 5.4 T, nl~0.8 LSN
D: 1.0 MW [.7-1.3] sec
E: 1.5 MW [.7-1.3] sec
J: 2.5 MW [.7-1.3] sec
Result: plasma
D: ran 3 faults - runaway power
E: ran 1 fault
J: ran max faults
PRF = 5.4 MW for 80 msec
019 Ip~1.0 MA, 5.4 T, nl~0.8 LSN
D: 1.0 MW [.7-1.3] sec
E: 1.0 MW [.7-1.3] sec
J: 2.5 MW [.7-1.3] sec
Result: plasma - early disruption
020 Ip~1.0 MA, 5.4 T, nl~0.8 LSN
D: 1.0 MW [.7-1.3] sec
E: 1.5 MW [.7-1.3] sec
J: 2.5 MW [.7-1.3] sec
Result: plasma
D: ran 3 faults - runaway power
E: ran 1 fault
J: ran max faults
PRF = 4.8 MW for 80 msec
021 Ip~1.0 MA, 5.4 T, nl~0.8 LSN
D: 0.6 MW [.7-1.3] sec
E: 1.2 MW [.7-1.3] sec
J: 2.0 MW [.7-1.3] sec
Result: plasma
D: ran max faults
E: ran 4 fault
J: ran max faults - all from J3DC1
PRF = 4.6 MW for 80 msec
022 Ip~0.8 MA, 5.4 T, nl~0.8 LSN
D: 0.6 MW [.7-1.3] sec
E: 1.2 MW [.7-1.3] sec
J: 2.0 MW [.7-1.3] sec
Result: plasma
D: ran max faults
E: ran clean
J: ran max faults - but got better later in discharge
PRF = 4.6 MW for 80 msec
023 Ip~0.8 MA, 5.4 T, nl~0.8 LSN
D: 1.0 MW [.7-1.3] sec, open-loop. no power feedback.
E: 1.5 MW [.7-1.3] sec
J: 2.0 MW [.7-1.3] sec
Result: plasma
D: ran. Seems that the demand and the result still off.
Max faults.
E: ran. one faults.
J: ran.Max faults.
PRF = 4 MW

D port open loop operation seems to also by-pass the slow-rise start-up.
As a result, the retries are less successful than running with the feedback.

024 Ip~0.8 MA, 5.4 T, nl~0.8 LSN
D: .7 MW [.7-1.3] sec, open-loop. no power feedback.
E: 1.5 MW [.7-1.3] sec
J: 1.8 MW [.7-1.3] sec
Result: plasma
D: ran. Start with power overshoot then come down.
No slow start-up. I will ramp up for next shot.
E: ran. one faults.
J: ran.Max faults.
025 Ip~0.8 MA, 5.4 T, nl~0.8 LSN
D: off
E: 1.2 MW [.7-1.3] sec
J: 1.8 MW [.7-1.3] sec
Result: plasma
D: off
E: ran. clean
J: ran. 6 faults.
D off to check the problem in the power. Demand seemed to be too high.
Found it was the bad coefficients I put in the tree for the calibration
of demand and power. (Don't why they are not working).
026 Ip~0.8 MA, 5.4 T, nl~0.8 LSN
D: off
E: 1.2 MW [.7-1.3] sec
J: 1.8 MW [.7-1.3] sec
Result: plasma
D: off
E: ran. one faults.
J: ran.Max faults.
D off to check the problem in the power. Demand seemed to be too high.
Found it was the bad coefficients I put in the tree for the calibration
of demand and power from dummy load test. (Don't why they are not
working). Reload old coefficients. Now it should work, but the max
programable power is about 0.8 MW in the RF-control widget. It gives you
1.5 MW. (The response is nonlinear!)
027 Ip~0.8 MA, 5.4 T, nl~0.8 LSN
D: demand 0.5 MW, should get 1 MW. [0.7, 1.3] Sec. open-loop
E: 1.2 MW [.7-1.3] sec
J: 1.8 MW [.7-1.3] sec
Result: plasma
D: ran. about 1 MW. 100 ms gaps from 0.96 to 1.05 sec with difficultied in retries
E: ran. clean. 1.3 MW.
J: ran. Max faults. about 2 MW.
PRF = 4.4 MW, one long EDA H-mode
028 Ip~0.8 MA, 5.4 T, nl~0.8 LSN
D: demand 0.53 MW, should get 1.2 MW. [0.7, 1.3] Sec. open-loop.
E: 1.3 MW [.7-1.3] sec
J: 1.7 MW [.7-1.3] sec
Result: plasma
D: ran. about 1-1.2 MW. Some retry problems later.
E: ran. clean. 1.5 MW.
J: ran. one fault later. about 1.9 MW.
PRF = 4.6 MW.
Best shot so far. 4.6 MW, continueous for 520 ms.
One long EDA H-mode
029 Ip~0.8 MA, 5.4 T, nl~0.8 LSN
D: demand 0.55 MW, should get 1.3 MW. [0.7, 1.3] Sec. open-loop.
E: 1.4 MW [.7-1.3] sec
J: 1.8 MW[.7-1.3] sec
Result: plasma
D: ran. about 1.2-1.3 MW. Some retry problems later.
E: ran. clean. 1.6 MW.
J: ran. one fault later. about 2 MW.
PRF = 5.0 MW.
4.9 MW, continueous for 370 ms.
One long EDA H-mode.
030 Ip~0.8 MA, 5.4 T, nl~0.8 LSN
D: demand 0.565 MW, should get 1.4 MW. [0.7, 1.3] Sec. open-loop.
E: 1.45 MW [.7-1.3] sec
J: 1.75 MW [.7-1.3] sec
Result: plasma
D: ran. about 1.2-1.4 MW. clean
E: ran. clean. 1.7 MW. clean
J: ran. one trip. about 2 MW.
PRF = 5.0 MW.
5.0 MW, with only one trip from J at 1.03 sec.
One long EDA H-mode.

Next shot: try 1 MA shot.
031 Ip~1.0 MA, 5.4 T, nl~0.8 LSN
D: demand 0.57 MW, should get 1.45 MW. [0.7, 1.3] Sec. open-loop.
E: 1.45 MW [.7-1.3] sec
J: 1.76 MW [.7-1.3] sec
Result: plasma
D: ran. one gap from 0.8 to 0.82 sec. Retry problem.
E: ran. clean. 1.7 MW. clean
J: ran. 2 trips. about 2 MW.
PRF = 4.8 MW.

250 dummy load test D-port with open loop feedback; demand 0.1 MW; result .001
251
252 better
253 DL test for D-port with modulator swapped from E-port
254 DL test for E-port with modulator swapped from D-port

Summary:

Steady (~0.5 sec) 5 MW EDA H-modes were achieved (1030605029 and 030)
for the first time. Higher power shorter (<0.1 sec) H-modes were also
achieved. The overall plasma performance was moderate. H-factors
~1.5 were typical and the maximum stored energy for the day was ~195
kJ. There have been 3 MW discharges in the past that had > 200
kJ. High performance at high current and density will take some shot
development.

RF pulse length and total power level were paced by D and J-port
antennas. An on-going problem with D-port power feedback limited its
power level to ~1 MW. The temporary solution was to run the feedback
open loop. For J-port, 2 MW, 0.5 sec pulses have become more
reliable, but high powers still had multiple faults. At 2.7 MW
(1030605016), the pulse length is currently ~0.3 sec and for 3.2 MW
the pulse length is ~0.08 sec. The conditioning progress is better
than after the first boronization and the system appears to be
improving. Additional operation may result in even higher power, 0.5
sec pulses. Record J-port power level was achieved for short (0.08
sec) pulses for the first time as well. In shot 012, J3 was run at
1.6 MW without injection without J4 powered. In the past this type of
operation has led to injections.

Additional RF Notes:

At high power on D, the voltage and Vmax derived from DC2 diverge and
the power is likely to run uncontrolled.

Swapped modulator boards in D and E. D-port still ran uncontrolled
but E-port was fine. To have some reliable control of the power,
FMIT#1 was run open loop and it behaved better. For steady targets,
the output power will be fairly steady but varying loads will result
in varying output power.

Physics Operator Summaries

Entered: Jul 7 2004 04:37:18:130PM

Author: Jim Irby

Run 1030605 High RF Power

SL: Lin, Wukitch
EO: Dekow, Fitzgerald, Parkin
PO: Irby, Rowan

The machine ran extremely well today with no duds or fizzles and 29
plasmas. Two disruptions, shots 18 and 19, were caused by the
mysterious injections from the divertor. Shot 18 ran nearly 1.3 s
before disrupting, while 19 only ran only 0.6 s. So we waited 20
minutes before taking shot 20, and also did 5 minutes of ECDC. Either
the ECDC, or the wait, or random events helped as we did not have
another disruption.

A major result of the run was obtaining reliable operation at 5 MW
using all three antennas. On shot 22, going against the advice of
the PO, the SL decreased the current from 1 MA to 0.8 MA. This
change allowed us to get a sustained EDA mode. By shot 28 the rf
had been tuned up to get pretty clean 4.5 MW rf pulses. By shot 30
nearly 5 MW of power was coupled with only one interrupt on j-port.

On shot 15 we had 195 kJ of stored energy with an rf power level of 5
MW. Though this was a fairly high stored energy for recent operation,
we have obtained over 200 kJ at 3 MW of rf in the past. So a careful
study of stored energy with rf power should be a high priority now
that the rf is working well.

The non-axisymmetric control coils were used from shot 7 onward.

Problems
--------

EF3 failed to go on shot 6. Still having problems with d-port rf power
control. The feedback link was cut part way though the run, and the power
level was controlled directly. It took several visits to the power room to
get the a-coils running.

Score
-----

duds: 0
fizzles: 0
plasmas: 29

Shot Log
--------

test 01
ef3 fault 06

plasma 02,03,04,05,07,08,09,10,11.12,13,
14,15,16,17,18,19,20,21,22,23,24,
25,26,27,28,29,30,31

disruptions: 18,19 --- injections from lower divertor

Details
----------------------------------------------------------------------------
1030605xxx irby PHYSICS_OPERATOR Jun 5 2003 8:53:59:800AM
. . . . . . . . . . . . . . . . . . . .
loaded shot 1030529025 from the last high power rf run

will start out with non-axisymmetric coils in operation

Yijun just told me that he and Charley just found an unterminated splitter
from DC0 on d-port that might explain the control problem.

may try x-point sweep if we continue to have problems with injections
from the divertor
----------------------------------------------------------------------------
1030605001 irby PHYSICS_OPERATOR Jun 5 2003 8:38:11:560AM
. . . . . . . . . . . . . . . . . . . .
Start with cycle test --- check data system and gas

gs looks a little high
----------------------------------------------------------------------------
1030605002 irby PHYSICS_OPERATOR Jun 5 2003 9:23:31:883AM
. . . . . . . . . . . . . . . . . . . .
pre-fill from 27 to 25 ms

reduced argon from 37 to 25 ms until John complains

Gary reports a problem with the a-coil breaker --- we may or may not have them for this shot

Plasma --- first h-mode actually lasted a while --- 134 kJ, only 100 kJ to go

h/(h+d) at 6% at 1.2 s vs 9% during the 5/29 run (shot 25)

startup looks very good

No a-coil --- contactor not closed

Time (ms): 0 5 10 25
----------------------------------------
% Compiled module: DERIV.
Ip (kA): -4.5115 -18.2121 -32.2062 -118.2515
dIp/dt (kA/ms): -1.4241 -2.7796 -3.2100 -7.0591
pressure (mTorr): 0.0647 0.0662 0.0677 0.0669
Bz0 (mT): -3.5554 -1.1766 1.8778 22.2482
Br0 (mT): -1.4500 -1.6009 -1.7910 -1.7759
----------------------------------------------------------------------------
1030605003 irby PHYSICS_OPERATOR Jun 5 2003 9:40:35:046AM
. . . . . . . . . . . . . . . . . . . .
Density request from 1e20 to 8e19 /m^2 --- a little better for rf?

plasma into rampdown --- h-modes not as good --- earl suggests higher not lower density

startup still looks good, though pressure was up 5 or 10%

h/(h+d) up a little
----------------------------------------------------------------------------
1030605004 irby PHYSICS_OPERATOR Jun 5 2003 9:58:18:430AM
. . . . . . . . . . . . . . . . . . . .
plasma into rampdown

rf power 3 av going up to 5 --- good early h-mode --- 162 kJ briefly

h-mode starting earlier with more rf power early

h/(h+d) at 7%
----------------------------------------------------------------------------
1030605005 irby PHYSICS_OPERATOR Jun 5 2003 10:17:48:303AM
. . . . . . . . . . . . . . . . . . . .
prefill from 25 to 23 ms

plasma --- but almost lost it --- gas too low?

series short lasting h-modes --- irritation

d-port is still not under control --- got nearly 2 MW when programmed for 1

h/(h+d) no change

----------------------------------------------------------------------------
1030605006 irby PHYSICS_OPERATOR Jun 5 2003 10:39:15:353AM
. . . . . . . . . . . . . . . . . . . .
prepuff increased by 1 ms to 24 ms.

no plasma and no EF3

----------------------------------------------------------------------------
1030605007 irby PHYSICS_OPERATOR Jun 5 2003 10:46:48:480AM
. . . . . . . . . . . . . . . . . . . .
Plasma into rampdown --- startup much better

still lots of h-modes

a-coil back in operation --- turn on at 0.5 s

rf power between 3 an 5 MW

stored energy about 150 kJ

h/d creeping up
----------------------------------------------------------------------------
1030605008 irby PHYSICS_OPERATOR Jun 5 2003 11:02:16:423AM
. . . . . . . . . . . . . . . . . . . .
No PCS changes

plasma into rampdown --- startup still looks good

no e-port rf --- multiple ratty h-modes

h/(h+d) at 7% at 1.2 s
----------------------------------------------------------------------------
1030605009 irby PHYSICS_OPERATOR Jun 5 2003 11:17:22:003AM
. . . . . . . . . . . . . . . . . . . .
No PCS changes

startup up not as good --- will drop prefill slightly for next shot

plasma into rampdown --- a little more rf power, but troubles with j-port

164 kJ, 41e12 neuts/s

----------------------------------------------------------------------------
1030605010 irby PHYSICS_OPERATOR Jun 5 2003 11:33:50:353AM
. . . . . . . . . . . . . . . . . . . .
Prepuff reduced by 1ms

startup good --- little longer h-modes

cycle jumped directly to recool --- Tom restarted dispatcher --- data showing up

----------------------------------------------------------------------------
1030605011 irby PHYSICS_OPERATOR Jun 5 2003 11:46:43:790AM
. . . . . . . . . . . . . . . . . . . .
No PCS changes

Startup worse again

6 MW peak rf power, but j-port still tripping

h-modes look a little better

----------------------------------------------------------------------------
1030605012 irby PHYSICS_OPERATOR Jun 5 2003 12:03:15:626PM
. . . . . . . . . . . . . . . . . . . .
Added back the 1 ms prepuff --- now 24 ms again

startup very good --- pressure a little higher as requested

plasma into rampdown ---- three h-modes

182 kJ briefly

h/(h+d) nearly 8%

----------------------------------------------------------------------------
1030605013 irby PHYSICS_OPERATOR Jun 5 2003 12:27:16:900PM
. . . . . . . . . . . . . . . . . . . .
No PCS changes

plasma into rampdown, good startup

187 kJ, a little less j-port power but ran longer w/o fault --- 5.5 MW total

64e12 neuts --> 191 kJ from Earl's scaling law
----------------------------------------------------------------------------
1030605013 irby PHYSICS_OPERATOR Jun 5 2003 12:43:09:910PM
. . . . . . . . . . . . . . . . . . . .
No PCS changes

plasma into rampdown, good startup

183 kJ

----------------------------------------------------------------------------
1030605014 irby PHYSICS_OPERATOR Jun 5 2003 12:44:17:020PM
. . . . . . . . . . . . . . . . . . . .
No PCS changes

plasma into rampdown --- j-port on a little more
----------------------------------------------------------------------------
1030605015 irby PHYSICS_OPERATOR Jun 5 2003 12:53:52:503PM
. . . . . . . . . . . . . . . . . . . .
No PCS changes

Plasma into rampdown --- good startup

Catherine mentions we were already in neutron alert territory last shot

195 kJ briefly

h/(h+d) 8.2%
----------------------------------------------------------------------------
1030605016 irby PHYSICS_OPERATOR Jun 5 2003 1:07:12:400PM
. . . . . . . . . . . . . . . . . . . .
No PCS changes

Plasma into rampdown --- j-port looking better

h/(h+d) to 9%

189 kJ
----------------------------------------------------------------------------
1030605017 irby PHYSICS_OPERATOR Jun 5 2003 1:25:51:943PM
. . . . . . . . . . . . . . . . . . . .
No PCS changes --- shot 16 startup not great, but gas, fields, etc looked fine, so leave alone

Plasma into rampdown --- 1st h-mode lasted 420 ms, 5.2 MW

note that 2Pi foil radiation 50% of shot 14 level

h/(h+d) 7.5%

----------------------------------------------------------------------------
1030605018 irby PHYSICS_OPERATOR Jun 5 2003 1:39:26:916PM
. . . . . . . . . . . . . . . . . . . .
No PCS changes

Disruption at 1.28 s, injection

----------------------------------------------------------------------------
1030605019 irby PHYSICS_OPERATOR Jun 5 2003 2:10:59:636PM
. . . . . . . . . . . . . . . . . . . .
Reduced prefill by 1 ms

Disruption even earlier --- big injection

note that more gas is required to maintain density request following the disruption
on shot 18

hards early
----------------------------------------------------------------------------
1030605020 irby PHYSICS_OPERATOR Jun 5 2003 2:22:30:763PM
. . . . . . . . . . . . . . . . . . . .
5 minutes of ecdc --- plus an 18 minute wait

no change in gas puff

plasma into rampdown, but bad startup --- br0 too positive?
----------------------------------------------------------------------------
1030605021 irby PHYSICS_OPERATOR Jun 5 2003 2:45:18:610PM
. . . . . . . . . . . . . . . . . . . .
Br0 from 0.000 to -.00025 T --- let's pretend to make a change
prefill increased by 1 ms

Argon disabled for this shot --- too high signal on PPPL spectrometer?

20 minute wait before INIT

plasma into rampdown --- startup is better

----------------------------------------------------------------------------
1030605022 irby PHYSICS_OPERATOR Jun 5 2003 3:04:00:170PM
. . . . . . . . . . . . . . . . . . . .
Ip from 1e6 to 0.8e6 Amps

plasma into rampdown --- looks like EDA
----------------------------------------------------------------------------
1030605023 irby PHYSICS_OPERATOR Jun 5 2003 3:13:36:106PM
. . . . . . . . . . . . . . . . . . . .

023. Rowan sitting in for Irby
Plasma through ramp down.

Next shot: no pcs changes
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1030605024 irby PHYSICS_OPERATOR Jun 5 2003 3:27:30:096PM
. . . . . . . . . . . . . . . . . . . .
024. Plasma.
16 minutes since last shot

Next shot. No pcs changes.

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1030605025 irby PHYSICS_OPERATOR Jun 5 2003 3:54:57:516PM
. . . . . . . . . . . . . . . . . . . .

025. Plasma through rampdown

19 minutes since last shot

Next shot: no pcs changes

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1030605026 irby PHYSICS_OPERATOR Jun 5 2003 4:08:41:380PM
. . . . . . . . . . . . . . . . . . . .

026. Plasma. Again through ramp down.

Next shot: No PCS changes
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1030605027 irby PHYSICS_OPERATOR Jun 5 2003 4:36:37:390PM
. . . . . . . . . . . . . . . . . . . .

027. Plasma. Lasted through rampdown.
Rowan's last shot. Irby resumes control.
----------------------------------------------------------------------------
1030605028 irby PHYSICS_OPERATOR Jun 5 2003 4:56:34:220PM
. . . . . . . . . . . . . . . . . . . .
Thank you Bill...

No PCS changes

plasma into rampdown ---- h-factor 1.8 peak (rf_eff = 80%)
----------------------------------------------------------------------------
1030605029 irby PHYSICS_OPERATOR Jun 5 2003 4:57:04:580PM
. . . . . . . . . . . . . . . . . . . .
Plasma into rampdown ---- 5 MW
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1030605030 irby PHYSICS_OPERATOR Jun 5 2003 5:03:45:590PM
. . . . . . . . . . . . . . . . . . . .
No PCS changes

plasma into rampdown --- nice eda, only one j-port trip!

----------------------------------------------------------------------------
1030605031 irby PHYSICS_OPERATOR Jun 5 2003 5:24:45:246PM
. . . . . . . . . . . . . . . . . . . .
For the last shot:
increase Ip to 1 MA
increase Density to 1.e20 nl04

Plasma to rampdown --- couple of trips on j-port, a few on d-port -- 3 h-modes

Great day!

Session Leader Comments

Jun 5 2003 09:37:00:180AM 1030605002 Steve Wukitch 002 Ip~1.0 MA, 5.4 T, nl~1 LSN
D: 0.75 MW [.6-1.3] sec
E: 0.75 MW [.6-1.3] sec
J: 1.0 MW [.6-1.3] sec
Result: plasma
D: ran clean
E: ran clean
J: ran multiple faults early, fewer late
PRF = 2.6 MW

Jun 5 2003 09:40:06:310AM 1030605003 Steve Wukitch 003 Ip~1.0 MA, 5.4 T, nl~0.8 LSN
D: 1.0 MW [.6-1.3] sec
E: 1.0 MW [.6-1.3] sec
J: 1.5 MW [.6-1.3] sec
Result: plasma
D: ran 3 faults early
E: ran 4 faults early
J: ran max faults
PRF = 4.4 MW for brief period

Jun 5 2003 10:22:19:563AM 1030605004 Steve Wukitch 004 Ip~1.0 MA, 5.4 T, nl~0.8 LSN
D: 1.25 MW [.6-1.3] sec
E: 1.25 MW [.6-1.3] sec
J: 1.5 MW [.6-1.3] sec
Result: plasma
D: ran max faults - runaway power
E: ran 1 fault
J: ran max faults - better than last shot
PRF = 5 MW for brief period

Jun 5 2003 10:21:59:500AM 1030605005 Steve Wukitch 005 Ip~1.0 MA, 5.4 T, nl~0.8 LSN
D: 1.0 MW [.6-1.3] sec
E: 1.5 MW [.6-1.3] sec
J: 2.0 MW [.6-1.3] sec
Result: plasma
D: ran max faults - runaway power
E: ran 5 faults
J: ran max faults
PRF = 5 MW for brief periods

Jun 5 2003 10:21:49:593AM 1030605006 Steve Wukitch 006 Ip~1.0 MA, 5.4 T, nl~0.8 LSN
D: 1.0 MW [.6-1.3] sec
E: 1.5 MW [.6-1.3] sec
J: 2.0 MW [.6-1.3] sec
Result: NTP (no EF3)

Jun 5 2003 11:11:01:130AM 1030605007 Steve Wukitch 007 Ip~1.0 MA, 5.4 T, nl~0.8 LSN
D: 1.0 MW [.6-1.3] sec
E: 1.5 MW [.6-1.3] sec
J: 2.0 MW [.6-1.3] sec
Result: plasma
D: ran 4 faults - runaway power
E: ran 3 faults
J: ran max faults but better
PRF = 5 MW for brief periods

Jun 5 2003 11:11:27:380AM 1030605008 Steve Wukitch 008 Ip~1.0 MA, 5.4 T, nl~0.8 LSN
D: 1.0 MW [.6-1.3] sec
E: 0 MW [.6-1.3] sec
J: 2.5 MW [.6-1.3] sec
Result: plasma
D: ran 3 faults - runaway power
E: 0
J: ran max faults - retries struggle a bit
PRF = 4.5 MW for brief periods

Jun 5 2003 11:11:42:820AM 1030605009 Steve Wukitch 009 Ip~1.0 MA, 5.4 T, nl~0.8 LSN
D: 1.0 MW [.6-1.3] sec
E: 0 MW [.6-1.3] sec
J: 3.0 MW [.6-1.3] sec
Result: plasma
D: ran 3 faults - runaway power
E: ran 1 fault
J: ran max faults
PRF = 5.6 MW for brief periods
new record injected power from J for short pulses

Jun 5 2003 11:47:14:387AM 1030605010 Steve Wukitch 010 Ip~1.0 MA, 5.4 T, nl~0.8 LSN
D: 1.0 MW [.6-1.3] sec
E: 1.5 MW [.6-1.3] sec
J: 3.0 MW [.6-1.3] sec
Result: plasma
D: ran 2 faults - runaway power
E: ran 1 fault
J: ran max faults - better
PRF = 5.6 MW for brief periods

Jun 5 2003 11:46:57:697AM 1030605011 Steve Wukitch 011 Ip~1.0 MA, 5.4 T, nl~0.8 LSN
D: 1.0 MW [.6-1.3] sec
E: 1.5 MW [.6-1.3] sec
J: 3.0 MW [.6-1.3] sec
Result: plasma
D: ran 1 faults - runaway power
E: ran 1 fault
J: ran max faults - better
PRF = 5.6 MW for brief periods

Jun 5 2003 12:03:30:360PM 1030605012 Steve Wukitch 012 Ip~1.0 MA, 5.4 T, nl~0.8 LSN
D: 1.0 MW [.6-1.3] sec
E: 1.5 MW [.6-1.3] sec
J: 3.0 MW [.6-1.3] sec
Result: plasma
D: ran 4 faults - runaway power
E: ran 1 fault
J: ran max faults - better
PRF = 6 MW for 40 msec

Jun 5 2003 12:37:35:320PM 1030605013 Steve Wukitch 013 Ip~1.0 MA, 5.4 T, nl~0.8 LSN
D: 1.0 MW [.7-1.3] sec
E: 1.5 MW [.7-1.3] sec
J: 2.5 MW [.7-1.3] sec
Result: plasma
D: ran 4 faults - runaway power
E: ran 1 fault
J: ran max faults - better

Jun 5 2003 02:03:44:593PM 1030605014 Steve Wukitch 014 Ip~1.0 MA, 5.4 T, nl~0.8 LSN
D: 1.0 MW [.7-1.3] sec
E: 1.5 MW [.7-1.3] sec
J: 2.5 MW [.7-1.3] sec
Result: plasma
D: ran 4 faults - runaway power
E: ran 1 fault
J: ran max faults - better
PRF = 6 MW for 60 msec

Jun 5 2003 02:03:56:423PM 1030605015 Steve Wukitch 015 Ip~1.0 MA, 5.4 T, nl~0.8 LSN
D: 1.0 MW [.7-1.3] sec
E: 1.5 MW [.7-1.3] sec
J: 2.5 MW [.7-1.3] sec
Result: plasma
D: ran 4 faults - runaway power
E: ran 1 fault
J: ran max faults - better
PRF = 6 MW for 80 msec

Jun 5 2003 02:04:22:440PM 1030605016 Steve Wukitch 016 Ip~1.0 MA, 5.4 T, nl~0.8 LSN
D: 1.0 MW [.7-1.3] sec
E: 1.5 MW [.7-1.3] sec
J: 2.5 MW [.7-1.3] sec
Result: plasma
D: ran 4 faults - runaway power
E: ran 1 fault
J: ran max faults
PRF=5.4 MW for ~0.3 sec

Jun 5 2003 02:04:36:957PM 1030605017 Steve Wukitch 017 Ip~1.0 MA, 5.4 T, nl~0.8 LSN
D: 1.0 MW [.7-1.3] sec
E: 1.5 MW [.7-1.3] sec
J: 2.5 MW [.7-1.3] sec
Result: plasma
D: ran 3 faults - runaway power
E: ran clean
J: ran max faults
PRF = 5.4 MW for 80 msec

Jun 5 2003 02:49:31:290PM 1030605018 Steve Wukitch 018 Ip~1.0 MA, 5.4 T, nl~0.8 LSN
D: 1.0 MW [.7-1.3] sec
E: 1.5 MW [.7-1.3] sec
J: 2.5 MW [.7-1.3] sec
Result: plasma
D: ran 3 faults - runaway power
E: ran 1 fault
J: ran max faults
PRF = 5.4 MW for 80 msec

Jun 5 2003 01:59:20:040PM 1030605019 Steve Wukitch 019 Ip~1.0 MA, 5.4 T, nl~0.8 LSN
D: 1.0 MW [.7-1.3] sec
E: 1.0 MW [.7-1.3] sec
J: 2.5 MW [.7-1.3] sec
Result: plasma - early disruption

Jun 5 2003 02:50:45:650PM 1030605020 Steve Wukitch 020 Ip~1.0 MA, 5.4 T, nl~0.8 LSN
D: 1.0 MW [.7-1.3] sec
E: 1.5 MW [.7-1.3] sec
J: 2.5 MW [.7-1.3] sec
Result: plasma
D: ran 3 faults - runaway power
E: ran 1 fault
J: ran max faults
PRF = 4.8 MW for 80 msec

Jun 5 2003 02:51:13:370PM 1030605021 Steve Wukitch 021 Ip~1.0 MA, 5.4 T, nl~0.8 LSN
D: 0.6 MW [.7-1.3] sec
E: 1.2 MW [.7-1.3] sec
J: 2.0 MW [.7-1.3] sec
Result: plasma
D: ran max faults
E: ran 4 fault
J: ran max faults - all from J3DC1
PRF = 4.6 MW for 80 msec

Jun 5 2003 02:51:21:450PM 1030605022 Steve Wukitch 022 Ip~0.8 MA, 5.4 T, nl~0.8 LSN
D: 0.6 MW [.7-1.3] sec
E: 1.2 MW [.7-1.3] sec
J: 2.0 MW [.7-1.3] sec
Result: plasma
D: ran max faults
E: ran 4 faults
J: ran max faults - all from J3DC1
PRF = 4.6 MW for 80 msec

Jun 5 2003 03:25:31:033PM 1030605023 Yijun Lin 023 Ip~0.8 MA, 5.4 T, nl~0.8 LSN
D: 1.0 MW [.7-1.3] sec, open-loop. no power feedback.
E: 1.5 MW [.7-1.3] sec
J: 2.0 MW [.7-1.3] sec
Result: plasma
D: ran. Seems that the demand and the result still off.
Max faults.
E: ran. one faults.
J: ran.Max faults.
PRF = 4 MW023 Ip~0.8 MA, 5.4 T, nl~0.8 LSN

D port open loop operation seems to also by-pass the slow-rise start-up.
As a result, the retries are less successful than running with the feedback.

Jun 5 2003 04:13:41:230PM 1030605024 Yijun Lin 024 Ip~0.8 MA, 5.4 T, nl~0.8 LSN
D: .7 MW [.7-1.3] sec, open-loop. no power feedback.
E: 1.5 MW [.7-1.3] sec
J: 1.8 MW [.7-1.3] sec
Result: plasma
D: ran. Start with power overshoot then come down.
No slow start-up. I will ramp up for next shot.

E: ran. one faults.
J: ran.Max faults.

Jun 5 2003 04:27:17:910PM 1030605025 Yijun Lin 25 Ip~0.8 MA, 5.4 T, nl~0.8 LSN
D: off
E: 1.2 MW [.7-1.3] sec
J: 1.8 MW [.7-1.3] sec
Result: plasma
D: off
E: ran. clean
J: ran. 6 faults.
D off to check the problem in the power. Demand seemed to be too high.
Found it was the bad coefficients I put in the tree for the calibration
of demand and power. (Don't why they are not
working).

Jun 5 2003 04:27:31:410PM 1030605026 Yijun Lin 26 Ip~0.8 MA, 5.4 T, nl~0.8 LSN
D: off
E: 1.2 MW [.7-1.3] sec
J: 1.8 MW [.7-1.3] sec
Result: plasma
D: off
E: ran. one faults.
J: ran.Max faults.
D off to check the problem in the power. Demand seemed to be too high.
Found it was the bad coefficients I put in the tree for the calibration
of demand and power from dummy load test. (Don't why they are not
working). Reload old coefficients. Now it should work, but the max
programable power is about 0.8 MW in the RF-control widget. It gives you
1.5 MW. (The response is nonlinear!)

Jun 5 2003 04:31:10:210PM 1030605027 Yijun Lin Ip~0.8 MA, 5.4 T, nl~0.8 LSN
D: demand 0.5 MW, should get 1 MW. [0.7, 1.3] Sec. open=loop.
E: 1.2 MW [.7-1.3] sec
J: 1.8 MW [.7-1.3] sec
Result: plasma
D: ran. about 1 MW. 100 ms gaps from 0.96 to 1.05 sec with difficultied in retries
E: ran. clean. 1.3 MW.
J: ran. Max faults. about 2 MW.
PRF = 4.4 MW, one long EDA H-mode

Jun 5 2003 04:37:28:847PM 1030605028 Yijun Lin 28 Ip~0.8 MA, 5.4 T, nl~0.8 LSN
D: demand 0.53 MW, should get 1.2 MW. [0.7, 1.3] Sec. open-loop.
E: 1.3 MW [.7-1.3] sec
J: 1.7 MW [.7-1.3] sec
Result: plasma
D: ran. about 1-1.2 MW. Some retry problems later.
E: ran. clean. 1.5 MW.
J: ran. one fault later. about 1.9 MW.
PRF = 4.6 MW.
Best shot so far. 4.6 MW, continueous for 520 ms.
One long EDA H-mode

Jun 5 2003 04:51:27:447PM 1030605029 Yijun Lin 29 Ip~0.8 MA, 5.4 T, nl~0.8 LSN
D: demand 0.55 MW, should get 1.3 MW. [0.7, 1.3] Sec. open-loop.
E: 1.4 MW [.7-1.3] sec
J: 1.8 MW [.7-1.3] sec
Result: plasma
D: ran. about 1.2-1.3 MW. Some retry problems later.
E: ran. clean. 1.6 MW.
J: ran. one fault later. about 2 MW.
PRF = 5.0 MW.
4.9 MW, continueous for 370 ms.
One long EDA H-mode.

Jun 5 2003 05:01:56:977PM 1030605030 Yijun Lin 030 Ip~0.8 MA, 5.4 T, nl~0.8 LSN
D: demand 0.565 MW, should get 1.4 MW. [0.7, 1.3] Sec. open-loop.
E: 1.45 MW [.7-1.3] sec
J: 1.75 MW [.7-1.3] sec
Result: plasma
D: ran. about 1.2-1.4 MW. clean
E: ran. clean. 1.7 MW. clean
J: ran. one trip. about 2 MW.
PRF = 5.0 MW.
5.0 MW, with only one trip from J at 1.03 sec.
One long EDA H-mode.

Next shot: try 1 MA shot.

Jun 5 2003 05:16:27:437PM 1030605031 Yijun Lin
031 Ip~1.0 MA, 5.4 T, nl~0.8 LSN
D: demand 0.57 MW, should get 1.45 MW. [0.7, 1.3] Sec. open-loop.
E: 1.45 MW [.7-1.3] sec
J: 1.76 MW [.7-1.3] sec
Result: plasma
D: ran. one gap from 0.8 to 0.82 sec. Retry problem.
E: ran. clean. 1.7 MW. clean
J: ran. 2 trips. about 2 MW.
PRF = 4.8 MW.

Physics Operator Comments

Jun 5 2003 08:53:59:800AM Jim Irby loaded shot 1030529025 from the last high power rf run

will start out with non-axisymmetric coils in opration

Yijun just told me that he and Charley just found an unterminated splitter
from DC0 on d-port that might explain the control problem.

may try x-point sweep if we continue to have problems with injections
from the divertor

Jun 5 2003 08:38:11:560AM 1030605001 Jim Irby Start with cycle test --- check data system and gas

gs looks a little high

Jun 5 2003 09:23:31:883AM 1030605002 Jim Irby pre-fill from 27 to 25 ms

reduced argon from 37 to 25 ms until John complains

Gary reports a problem with the a-coil breaker --- we may or may not have them for this shot

Plasma --- first h-mode actually lasted a while --- 134 kJ, only 100 kJ to go

h/(h+d) at 6% at 1.2 s vs 9% during the 5/29 run (shot 25)

startup looks very good

No a-coil --- contactor not closed

Time (ms): 0 5 10 25
----------------------------------------
% Compiled module: DERIV.
Ip (kA): -4.5115 -18.2121 -32.2062 -118.2515
dIp/dt (kA/ms): -1.4241 -2.7796 -3.2100 -7.0591
pressure (mTorr): 0.0647 0.0662 0.0677 0.0669
Bz0 (mT): -3.5554 -1.1766 1.8778 22.2482
Br0 (mT): -1.4500 -1.6009 -1.7910 -1.7759

Jun 5 2003 09:40:35:047AM 1030605003 Jim Irby Density request from 1e20 to 8e19 /m^2 --- a little better for rf?

plasma into rampdown --- h-modes not as good --- earl suggests higher not lower density

startup still looks good, though pressure was up 5 or 10%

h/(h+d) up a little

Jun 5 2003 09:58:18:430AM 1030605004 Jim Irby plasma into rampdown

rf power 3 av going up to 5 --- good early h-mode --- 162 kJ briefly

h-mode starting earlier with more rf power early

h/(h+d) at 7%

Jun 5 2003 10:17:48:303AM 1030605005 Jim Irby prefill from 25 to 23 ms

plasma --- but almost lost it --- gas too low?

series short lasting h-modes --- irritation

d-port is still not under control --- got nearly 2 MW when programmed for 1

h/(h+d) no change

Jun 5 2003 10:39:15:353AM 1030605006 Jim Irby prepuff increased by 1 ms to 24 ms.

no plasma and no EF3

Jun 5 2003 10:46:48:480AM 1030605007 Jim Irby Plasma into rampdown --- startup much better

still lots of h-modes

a-coil back in operation --- turn on at 0.5 s

rf power between 3 an 5 MW

stored energy about 150 kJ

h/d creeping up

Jun 5 2003 11:02:16:423AM 1030605008 Jim Irby No PCS changes

plasma into rampdown --- startup still looks good

no e-port rf --- multiple ratty h-modes

h/(h+d) at 7% at 1.2 s

Jun 5 2003 11:17:22:003AM 1030605009 Jim Irby No PCS changes

startup up not as good --- will drop prefill slightly for next shot

plasma into rampdown --- a little more rf power, but troubles with j-port

164 kJ, 41e12 neuts/s

Jun 5 2003 11:33:50:353AM 1030605010 Jim Irby Prepuff reduced by 1ms

startup good --- little longer h-modes

cycle jumped directly to recool --- Tom restarted dispatcher --- data showing up

Jun 5 2003 11:46:43:790AM 1030605011 Jim Irby No PCS changes

Startup worse again

6 MW peak rf power, but j-port still tripping

h-modes look a little better

Jun 5 2003 12:03:15:627PM 1030605012 Jim Irby Added back the 1 ms prepuff --- now 24 ms again

startup very good --- pressure a little higher as requested

plasma into rampdown ---- three h-modes

182 kJ briefly

h/(h+d) nearly 8%

Jun 5 2003 12:27:16:900PM 1030605013 Jim Irby No PCS changes

plasma into rampdown, good startup

187 kJ, a little less j-port power but ran longer w/o fault --- 5.5 MW total

64e12 neuts --> 191 kJ from Earl's scaling law

Jun 5 2003 12:43:09:910PM 1030605013 Jim Irby No PCS changes

plasma into rampdown, good startup

183 kJ

Jun 5 2003 12:44:17:020PM 1030605014 Jim Irby No PCS changes

plasma into rampdown --- j-port on a little more

Jun 5 2003 12:53:52:503PM 1030605015 Jim Irby No PCS changes

Plasma into rampdown --- good startup

Catherine mentions we were already in neutron alert territory last shot

195 kJ briefly

h/(h+d) 8.2%

Jun 5 2003 01:07:12:400PM 1030605016 Jim Irby No PCS changes

Plasma into rampdown --- j-port looking better

h/(h+d) to 9%

189 kJ

Jun 5 2003 01:25:51:943PM 1030605017 Jim Irby No PCS changes --- shot 16 startup not great, but gas, fields, etc looked fine, so leave alone

Plasma into rampdown --- 1st h-mode lasted 420 ms, 5.2 MW

note that 2Pi foil radiation 50% of shot 14 level

h/(h+d) 7.5%

Jun 5 2003 01:39:26:917PM 1030605018 Jim Irby No PCS changes

Disruption at 1.28 s, injection

Jun 5 2003 02:10:59:637PM 1030605019 Jim Irby Reduced prefill by 1 ms

Disruption even earlier --- big injection

note that more gas is required to maintain density request following the disruption
on shot 18

hards early

Jun 5 2003 02:22:30:763PM 1030605020 Jim Irby 5 minutes of ecdc --- plus an 18 minute wait

no change in gas puff

plasma into rampdown, but bad startup --- br0 too positive?

Jun 5 2003 02:45:18:610PM 1030605021 Jim Irby Br0 from 0.000 to -.00025 T --- let's pretend to make a change
prefill increased by 1 ms

Argon disabled for this shot --- too high signal on PPPL spectrometer?

20 minute wait before INIT

plasma into rampdown --- startup is better

Jun 5 2003 03:04:00:170PM 1030605022 Jim Irby Ip from 1e6 to 0.8e6 Amps

plasma into rampdown --- looks like EDA

Jun 5 2003 03:13:36:107PM 1030605023 Jim Irby
023. Rowan sitting in for Irby
Plasma through ramp down.

Next shot: no pcs changes

Jun 5 2003 03:27:30:097PM 1030605024 Jim Irby 024. Plasma.
16 minutes since last shot

Next shot. No pcs changes.

Jun 5 2003 03:54:57:517PM 1030605025 Jim Irby
025. Plasma through rampdown

19 minutes since last shot

Next shot: no pcs changes

Jun 5 2003 04:08:41:380PM 1030605026 Jim Irby
026. Plasma. Again through ramp down.

Next shot: No PCS changes

Jun 5 2003 04:36:37:390PM 1030605027 Jim Irby
027. Plasma. Lasted through rampdown.
Rowan's last shot. Irby resumes control.

Jun 5 2003 04:56:34:220PM 1030605028 Jim Irby Thank you Bill...

No PCS changes

plasma into rampdown ---- h-factor 1.8 peak (rf_eff = 80%)

Jun 5 2003 04:57:04:580PM 1030605029 Jim Irby Plasma into rampdown ---- 5 MW

Jun 5 2003 05:03:45:590PM 1030605030 Jim Irby No PCS changes

plasma into rampdown --- nice eda, only one j-port trip!

Jun 5 2003 05:24:45:247PM 1030605031 Jim Irby For the last shot:
increase Ip to 1 MA
increase Density to 1.e20 nl04

Plasma to rampdown --- couple of trips on j-port, a few on d-port -- 3 h-modes

Great day!

Engineering Operator Comments

Shot Time Type Status Comment

1 08:24:44:433AM Test Ok Data System Test

2 09:10:13:633AM Plasma Ok

3 09:29:00:707AM Plasma Ok

4 09:45:50:310AM Plasma Ok

5 10:03:26:740AM Plasma Ok

6 10:18:08:337AM Plasma Bad No EF3

7 10:30:53:117AM Plasma Ok

8 10:48:15:330AM Plasma Ok

9 11:01:48:517AM Plasma Ok

10 11:19:11:010AM Plasma Ok

11 11:32:33:960AM Plasma Ok

12 11:50:16:910AM Plasma Ok

13 12:08:42:823PM Plasma Ok

14 12:31:23:267PM Plasma Ok

15 12:44:40:520PM Plasma Ok

16 12:58:26:430PM Plasma Ok

17 01:11:16:450PM Plasma Ok

18 01:24:16:750PM Plasma Ok

19 01:45:11:863PM Plasma Ok

20 02:11:12:497PM Plasma Ok

21 02:34:16:547PM Plasma Ok

22 02:47:32:177PM Plasma Ok

23 03:06:18:080PM Plasma Ok

24 03:22:58:887PM Plasma Ok

25 03:42:04:400PM Plasma Ok

26 03:55:09:080PM Plasma Ok

27 04:17:10:910PM Plasma Ok

28 04:30:32:867PM Plasma Ok

29 04:43:11:510PM Plasma Ok

30 04:56:23:517PM Plasma Ok

31 05:10:39:287PM Plasma Ok

Session Leader Comments
Jun 5 2003 09:37:00:180AM	1030605002	Steve Wukitch	002 Ip~1.0 MA, 5.4 T, nl~1 LSN D: 0.75 MW [.6-1.3] sec E: 0.75 MW [.6-1.3] sec J: 1.0 MW [.6-1.3] sec Result: plasma D: ran clean E: ran clean J: ran multiple faults early, fewer late PRF = 2.6 MW
Jun 5 2003 09:40:06:310AM	1030605003	Steve Wukitch	003 Ip~1.0 MA, 5.4 T, nl~0.8 LSN D: 1.0 MW [.6-1.3] sec E: 1.0 MW [.6-1.3] sec J: 1.5 MW [.6-1.3] sec Result: plasma D: ran 3 faults early E: ran 4 faults early J: ran max faults PRF = 4.4 MW for brief period
Jun 5 2003 10:22:19:563AM	1030605004	Steve Wukitch	004 Ip~1.0 MA, 5.4 T, nl~0.8 LSN D: 1.25 MW [.6-1.3] sec E: 1.25 MW [.6-1.3] sec J: 1.5 MW [.6-1.3] sec Result: plasma D: ran max faults - runaway power E: ran 1 fault J: ran max faults - better than last shot PRF = 5 MW for brief period
Jun 5 2003 10:21:59:500AM	1030605005	Steve Wukitch	005 Ip~1.0 MA, 5.4 T, nl~0.8 LSN D: 1.0 MW [.6-1.3] sec E: 1.5 MW [.6-1.3] sec J: 2.0 MW [.6-1.3] sec Result: plasma D: ran max faults - runaway power E: ran 5 faults J: ran max faults PRF = 5 MW for brief periods
Jun 5 2003 10:21:49:593AM	1030605006	Steve Wukitch	006 Ip~1.0 MA, 5.4 T, nl~0.8 LSN D: 1.0 MW [.6-1.3] sec E: 1.5 MW [.6-1.3] sec J: 2.0 MW [.6-1.3] sec Result: NTP (no EF3)
Jun 5 2003 11:11:01:130AM	1030605007	Steve Wukitch	007 Ip~1.0 MA, 5.4 T, nl~0.8 LSN D: 1.0 MW [.6-1.3] sec E: 1.5 MW [.6-1.3] sec J: 2.0 MW [.6-1.3] sec Result: plasma D: ran 4 faults - runaway power E: ran 3 faults J: ran max faults but better PRF = 5 MW for brief periods
Jun 5 2003 11:11:27:380AM	1030605008	Steve Wukitch	008 Ip~1.0 MA, 5.4 T, nl~0.8 LSN D: 1.0 MW [.6-1.3] sec E: 0 MW [.6-1.3] sec J: 2.5 MW [.6-1.3] sec Result: plasma D: ran 3 faults - runaway power E: 0 J: ran max faults - retries struggle a bit PRF = 4.5 MW for brief periods
Jun 5 2003 11:11:42:820AM	1030605009	Steve Wukitch	009 Ip~1.0 MA, 5.4 T, nl~0.8 LSN D: 1.0 MW [.6-1.3] sec E: 0 MW [.6-1.3] sec J: 3.0 MW [.6-1.3] sec Result: plasma D: ran 3 faults - runaway power E: ran 1 fault J: ran max faults PRF = 5.6 MW for brief periods new record injected power from J for short pulses
Jun 5 2003 11:47:14:387AM	1030605010	Steve Wukitch	010 Ip~1.0 MA, 5.4 T, nl~0.8 LSN D: 1.0 MW [.6-1.3] sec E: 1.5 MW [.6-1.3] sec J: 3.0 MW [.6-1.3] sec Result: plasma D: ran 2 faults - runaway power E: ran 1 fault J: ran max faults - better PRF = 5.6 MW for brief periods
Jun 5 2003 11:46:57:697AM	1030605011	Steve Wukitch	011 Ip~1.0 MA, 5.4 T, nl~0.8 LSN D: 1.0 MW [.6-1.3] sec E: 1.5 MW [.6-1.3] sec J: 3.0 MW [.6-1.3] sec Result: plasma D: ran 1 faults - runaway power E: ran 1 fault J: ran max faults - better PRF = 5.6 MW for brief periods
Jun 5 2003 12:03:30:360PM	1030605012	Steve Wukitch	012 Ip~1.0 MA, 5.4 T, nl~0.8 LSN D: 1.0 MW [.6-1.3] sec E: 1.5 MW [.6-1.3] sec J: 3.0 MW [.6-1.3] sec Result: plasma D: ran 4 faults - runaway power E: ran 1 fault J: ran max faults - better PRF = 6 MW for 40 msec
Jun 5 2003 12:37:35:320PM	1030605013	Steve Wukitch	013 Ip~1.0 MA, 5.4 T, nl~0.8 LSN D: 1.0 MW [.7-1.3] sec E: 1.5 MW [.7-1.3] sec J: 2.5 MW [.7-1.3] sec Result: plasma D: ran 4 faults - runaway power E: ran 1 fault J: ran max faults - better
Jun 5 2003 02:03:44:593PM	1030605014	Steve Wukitch	014 Ip~1.0 MA, 5.4 T, nl~0.8 LSN D: 1.0 MW [.7-1.3] sec E: 1.5 MW [.7-1.3] sec J: 2.5 MW [.7-1.3] sec Result: plasma D: ran 4 faults - runaway power E: ran 1 fault J: ran max faults - better PRF = 6 MW for 60 msec
Jun 5 2003 02:03:56:423PM	1030605015	Steve Wukitch	015 Ip~1.0 MA, 5.4 T, nl~0.8 LSN D: 1.0 MW [.7-1.3] sec E: 1.5 MW [.7-1.3] sec J: 2.5 MW [.7-1.3] sec Result: plasma D: ran 4 faults - runaway power E: ran 1 fault J: ran max faults - better PRF = 6 MW for 80 msec
Jun 5 2003 02:04:22:440PM	1030605016	Steve Wukitch	016 Ip~1.0 MA, 5.4 T, nl~0.8 LSN D: 1.0 MW [.7-1.3] sec E: 1.5 MW [.7-1.3] sec J: 2.5 MW [.7-1.3] sec Result: plasma D: ran 4 faults - runaway power E: ran 1 fault J: ran max faults PRF=5.4 MW for ~0.3 sec
Jun 5 2003 02:04:36:957PM	1030605017	Steve Wukitch	017 Ip~1.0 MA, 5.4 T, nl~0.8 LSN D: 1.0 MW [.7-1.3] sec E: 1.5 MW [.7-1.3] sec J: 2.5 MW [.7-1.3] sec Result: plasma D: ran 3 faults - runaway power E: ran clean J: ran max faults PRF = 5.4 MW for 80 msec
Jun 5 2003 02:49:31:290PM	1030605018	Steve Wukitch	018 Ip~1.0 MA, 5.4 T, nl~0.8 LSN D: 1.0 MW [.7-1.3] sec E: 1.5 MW [.7-1.3] sec J: 2.5 MW [.7-1.3] sec Result: plasma D: ran 3 faults - runaway power E: ran 1 fault J: ran max faults PRF = 5.4 MW for 80 msec
Jun 5 2003 01:59:20:040PM	1030605019	Steve Wukitch	019 Ip~1.0 MA, 5.4 T, nl~0.8 LSN D: 1.0 MW [.7-1.3] sec E: 1.0 MW [.7-1.3] sec J: 2.5 MW [.7-1.3] sec Result: plasma - early disruption
Jun 5 2003 02:50:45:650PM	1030605020	Steve Wukitch	020 Ip~1.0 MA, 5.4 T, nl~0.8 LSN D: 1.0 MW [.7-1.3] sec E: 1.5 MW [.7-1.3] sec J: 2.5 MW [.7-1.3] sec Result: plasma D: ran 3 faults - runaway power E: ran 1 fault J: ran max faults PRF = 4.8 MW for 80 msec
Jun 5 2003 02:51:13:370PM	1030605021	Steve Wukitch	021 Ip~1.0 MA, 5.4 T, nl~0.8 LSN D: 0.6 MW [.7-1.3] sec E: 1.2 MW [.7-1.3] sec J: 2.0 MW [.7-1.3] sec Result: plasma D: ran max faults E: ran 4 fault J: ran max faults - all from J3DC1 PRF = 4.6 MW for 80 msec
Jun 5 2003 02:51:21:450PM	1030605022	Steve Wukitch	022 Ip~0.8 MA, 5.4 T, nl~0.8 LSN D: 0.6 MW [.7-1.3] sec E: 1.2 MW [.7-1.3] sec J: 2.0 MW [.7-1.3] sec Result: plasma D: ran max faults E: ran 4 faults J: ran max faults - all from J3DC1 PRF = 4.6 MW for 80 msec
Jun 5 2003 03:25:31:033PM	1030605023	Yijun Lin	023 Ip~0.8 MA, 5.4 T, nl~0.8 LSN D: 1.0 MW [.7-1.3] sec, open-loop. no power feedback. E: 1.5 MW [.7-1.3] sec J: 2.0 MW [.7-1.3] sec Result: plasma D: ran. Seems that the demand and the result still off. Max faults. E: ran. one faults. J: ran.Max faults. PRF = 4 MW023 Ip~0.8 MA, 5.4 T, nl~0.8 LSN D port open loop operation seems to also by-pass the slow-rise start-up. As a result, the retries are less successful than running with the feedback.
Jun 5 2003 04:13:41:230PM	1030605024	Yijun Lin	024 Ip~0.8 MA, 5.4 T, nl~0.8 LSN D: .7 MW [.7-1.3] sec, open-loop. no power feedback. E: 1.5 MW [.7-1.3] sec J: 1.8 MW [.7-1.3] sec Result: plasma D: ran. Start with power overshoot then come down. No slow start-up. I will ramp up for next shot. E: ran. one faults. J: ran.Max faults.
Jun 5 2003 04:27:17:910PM	1030605025	Yijun Lin	25 Ip~0.8 MA, 5.4 T, nl~0.8 LSN D: off E: 1.2 MW [.7-1.3] sec J: 1.8 MW [.7-1.3] sec Result: plasma D: off E: ran. clean J: ran. 6 faults. D off to check the problem in the power. Demand seemed to be too high. Found it was the bad coefficients I put in the tree for the calibration of demand and power. (Don't why they are not working).
Jun 5 2003 04:27:31:410PM	1030605026	Yijun Lin	26 Ip~0.8 MA, 5.4 T, nl~0.8 LSN D: off E: 1.2 MW [.7-1.3] sec J: 1.8 MW [.7-1.3] sec Result: plasma D: off E: ran. one faults. J: ran.Max faults. D off to check the problem in the power. Demand seemed to be too high. Found it was the bad coefficients I put in the tree for the calibration of demand and power from dummy load test. (Don't why they are not working). Reload old coefficients. Now it should work, but the max programable power is about 0.8 MW in the RF-control widget. It gives you 1.5 MW. (The response is nonlinear!)
Jun 5 2003 04:31:10:210PM	1030605027	Yijun Lin	Ip~0.8 MA, 5.4 T, nl~0.8 LSN D: demand 0.5 MW, should get 1 MW. [0.7, 1.3] Sec. open=loop. E: 1.2 MW [.7-1.3] sec J: 1.8 MW [.7-1.3] sec Result: plasma D: ran. about 1 MW. 100 ms gaps from 0.96 to 1.05 sec with difficultied in retries E: ran. clean. 1.3 MW. J: ran. Max faults. about 2 MW. PRF = 4.4 MW, one long EDA H-mode
Jun 5 2003 04:37:28:847PM	1030605028	Yijun Lin	28 Ip~0.8 MA, 5.4 T, nl~0.8 LSN D: demand 0.53 MW, should get 1.2 MW. [0.7, 1.3] Sec. open-loop. E: 1.3 MW [.7-1.3] sec J: 1.7 MW [.7-1.3] sec Result: plasma D: ran. about 1-1.2 MW. Some retry problems later. E: ran. clean. 1.5 MW. J: ran. one fault later. about 1.9 MW. PRF = 4.6 MW. Best shot so far. 4.6 MW, continueous for 520 ms. One long EDA H-mode
Jun 5 2003 04:51:27:447PM	1030605029	Yijun Lin	29 Ip~0.8 MA, 5.4 T, nl~0.8 LSN D: demand 0.55 MW, should get 1.3 MW. [0.7, 1.3] Sec. open-loop. E: 1.4 MW [.7-1.3] sec J: 1.8 MW [.7-1.3] sec Result: plasma D: ran. about 1.2-1.3 MW. Some retry problems later. E: ran. clean. 1.6 MW. J: ran. one fault later. about 2 MW. PRF = 5.0 MW. 4.9 MW, continueous for 370 ms. One long EDA H-mode.
Jun 5 2003 05:01:56:977PM	1030605030	Yijun Lin	030 Ip~0.8 MA, 5.4 T, nl~0.8 LSN D: demand 0.565 MW, should get 1.4 MW. [0.7, 1.3] Sec. open-loop. E: 1.45 MW [.7-1.3] sec J: 1.75 MW [.7-1.3] sec Result: plasma D: ran. about 1.2-1.4 MW. clean E: ran. clean. 1.7 MW. clean J: ran. one trip. about 2 MW. PRF = 5.0 MW. 5.0 MW, with only one trip from J at 1.03 sec. One long EDA H-mode. Next shot: try 1 MA shot.
Jun 5 2003 05:16:27:437PM	1030605031	Yijun Lin	031 Ip~1.0 MA, 5.4 T, nl~0.8 LSN D: demand 0.57 MW, should get 1.45 MW. [0.7, 1.3] Sec. open-loop. E: 1.45 MW [.7-1.3] sec J: 1.76 MW [.7-1.3] sec Result: plasma D: ran. one gap from 0.8 to 0.82 sec. Retry problem. E: ran. clean. 1.7 MW. clean J: ran. 2 trips. about 2 MW. PRF = 4.8 MW.

Physics Operator Comments
Jun 5 2003 08:53:59:800AM		Jim Irby	loaded shot 1030529025 from the last high power rf run will start out with non-axisymmetric coils in opration Yijun just told me that he and Charley just found an unterminated splitter from DC0 on d-port that might explain the control problem. may try x-point sweep if we continue to have problems with injections from the divertor
Jun 5 2003 08:38:11:560AM	1030605001	Jim Irby	Start with cycle test --- check data system and gas gs looks a little high
Jun 5 2003 09:23:31:883AM	1030605002	Jim Irby	pre-fill from 27 to 25 ms reduced argon from 37 to 25 ms until John complains Gary reports a problem with the a-coil breaker --- we may or may not have them for this shot Plasma --- first h-mode actually lasted a while --- 134 kJ, only 100 kJ to go h/(h+d) at 6% at 1.2 s vs 9% during the 5/29 run (shot 25) startup looks very good No a-coil --- contactor not closed Time (ms): 0 5 10 25 ---------------------------------------- % Compiled module: DERIV. Ip (kA): -4.5115 -18.2121 -32.2062 -118.2515 dIp/dt (kA/ms): -1.4241 -2.7796 -3.2100 -7.0591 pressure (mTorr): 0.0647 0.0662 0.0677 0.0669 Bz0 (mT): -3.5554 -1.1766 1.8778 22.2482 Br0 (mT): -1.4500 -1.6009 -1.7910 -1.7759
Jun 5 2003 09:40:35:047AM	1030605003	Jim Irby	Density request from 1e20 to 8e19 /m^2 --- a little better for rf? plasma into rampdown --- h-modes not as good --- earl suggests higher not lower density startup still looks good, though pressure was up 5 or 10% h/(h+d) up a little
Jun 5 2003 09:58:18:430AM	1030605004	Jim Irby	plasma into rampdown rf power 3 av going up to 5 --- good early h-mode --- 162 kJ briefly h-mode starting earlier with more rf power early h/(h+d) at 7%
Jun 5 2003 10:17:48:303AM	1030605005	Jim Irby	prefill from 25 to 23 ms plasma --- but almost lost it --- gas too low? series short lasting h-modes --- irritation d-port is still not under control --- got nearly 2 MW when programmed for 1 h/(h+d) no change
Jun 5 2003 10:39:15:353AM	1030605006	Jim Irby	prepuff increased by 1 ms to 24 ms. no plasma and no EF3
Jun 5 2003 10:46:48:480AM	1030605007	Jim Irby	Plasma into rampdown --- startup much better still lots of h-modes a-coil back in operation --- turn on at 0.5 s rf power between 3 an 5 MW stored energy about 150 kJ h/d creeping up
Jun 5 2003 11:02:16:423AM	1030605008	Jim Irby	No PCS changes plasma into rampdown --- startup still looks good no e-port rf --- multiple ratty h-modes h/(h+d) at 7% at 1.2 s
Jun 5 2003 11:17:22:003AM	1030605009	Jim Irby	No PCS changes startup up not as good --- will drop prefill slightly for next shot plasma into rampdown --- a little more rf power, but troubles with j-port 164 kJ, 41e12 neuts/s
Jun 5 2003 11:33:50:353AM	1030605010	Jim Irby	Prepuff reduced by 1ms startup good --- little longer h-modes cycle jumped directly to recool --- Tom restarted dispatcher --- data showing up
Jun 5 2003 11:46:43:790AM	1030605011	Jim Irby	No PCS changes Startup worse again 6 MW peak rf power, but j-port still tripping h-modes look a little better
Jun 5 2003 12:03:15:627PM	1030605012	Jim Irby	Added back the 1 ms prepuff --- now 24 ms again startup very good --- pressure a little higher as requested plasma into rampdown ---- three h-modes 182 kJ briefly h/(h+d) nearly 8%
Jun 5 2003 12:27:16:900PM	1030605013	Jim Irby	No PCS changes plasma into rampdown, good startup 187 kJ, a little less j-port power but ran longer w/o fault --- 5.5 MW total 64e12 neuts --> 191 kJ from Earl's scaling law
Jun 5 2003 12:43:09:910PM	1030605013	Jim Irby	No PCS changes plasma into rampdown, good startup 183 kJ
Jun 5 2003 12:44:17:020PM	1030605014	Jim Irby	No PCS changes plasma into rampdown --- j-port on a little more
Jun 5 2003 12:53:52:503PM	1030605015	Jim Irby	No PCS changes Plasma into rampdown --- good startup Catherine mentions we were already in neutron alert territory last shot 195 kJ briefly h/(h+d) 8.2%
Jun 5 2003 01:07:12:400PM	1030605016	Jim Irby	No PCS changes Plasma into rampdown --- j-port looking better h/(h+d) to 9% 189 kJ
Jun 5 2003 01:25:51:943PM	1030605017	Jim Irby	No PCS changes --- shot 16 startup not great, but gas, fields, etc looked fine, so leave alone Plasma into rampdown --- 1st h-mode lasted 420 ms, 5.2 MW note that 2Pi foil radiation 50% of shot 14 level h/(h+d) 7.5%
Jun 5 2003 01:39:26:917PM	1030605018	Jim Irby	No PCS changes Disruption at 1.28 s, injection
Jun 5 2003 02:10:59:637PM	1030605019	Jim Irby	Reduced prefill by 1 ms Disruption even earlier --- big injection note that more gas is required to maintain density request following the disruption on shot 18 hards early
Jun 5 2003 02:22:30:763PM	1030605020	Jim Irby	5 minutes of ecdc --- plus an 18 minute wait no change in gas puff plasma into rampdown, but bad startup --- br0 too positive?
Jun 5 2003 02:45:18:610PM	1030605021	Jim Irby	Br0 from 0.000 to -.00025 T --- let's pretend to make a change prefill increased by 1 ms Argon disabled for this shot --- too high signal on PPPL spectrometer? 20 minute wait before INIT plasma into rampdown --- startup is better
Jun 5 2003 03:04:00:170PM	1030605022	Jim Irby	Ip from 1e6 to 0.8e6 Amps plasma into rampdown --- looks like EDA
Jun 5 2003 03:13:36:107PM	1030605023	Jim Irby	023. Rowan sitting in for Irby Plasma through ramp down. Next shot: no pcs changes
Jun 5 2003 03:27:30:097PM	1030605024	Jim Irby	024. Plasma. 16 minutes since last shot Next shot. No pcs changes.
Jun 5 2003 03:54:57:517PM	1030605025	Jim Irby	025. Plasma through rampdown 19 minutes since last shot Next shot: no pcs changes
Jun 5 2003 04:08:41:380PM	1030605026	Jim Irby	026. Plasma. Again through ramp down. Next shot: No PCS changes
Jun 5 2003 04:36:37:390PM	1030605027	Jim Irby	027. Plasma. Lasted through rampdown. Rowan's last shot. Irby resumes control.
Jun 5 2003 04:56:34:220PM	1030605028	Jim Irby	Thank you Bill... No PCS changes plasma into rampdown ---- h-factor 1.8 peak (rf_eff = 80%)
Jun 5 2003 04:57:04:580PM	1030605029	Jim Irby	Plasma into rampdown ---- 5 MW
Jun 5 2003 05:03:45:590PM	1030605030	Jim Irby	No PCS changes plasma into rampdown --- nice eda, only one j-port trip!
Jun 5 2003 05:24:45:247PM	1030605031	Jim Irby	For the last shot: increase Ip to 1 MA increase Density to 1.e20 nl04 Plasma to rampdown --- couple of trips on j-port, a few on d-port -- 3 h-modes Great day!

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	08:24:44:433AM	Test	Ok	Data System Test
2	09:10:13:633AM	Plasma	Ok
3	09:29:00:707AM	Plasma	Ok
4	09:45:50:310AM	Plasma	Ok
5	10:03:26:740AM	Plasma	Ok
6	10:18:08:337AM	Plasma	Bad	No EF3
7	10:30:53:117AM	Plasma	Ok
8	10:48:15:330AM	Plasma	Ok
9	11:01:48:517AM	Plasma	Ok
10	11:19:11:010AM	Plasma	Ok
11	11:32:33:960AM	Plasma	Ok
12	11:50:16:910AM	Plasma	Ok
13	12:08:42:823PM	Plasma	Ok
14	12:31:23:267PM	Plasma	Ok
15	12:44:40:520PM	Plasma	Ok
16	12:58:26:430PM	Plasma	Ok
17	01:11:16:450PM	Plasma	Ok
18	01:24:16:750PM	Plasma	Ok
19	01:45:11:863PM	Plasma	Ok
20	02:11:12:497PM	Plasma	Ok
21	02:34:16:547PM	Plasma	Ok
22	02:47:32:177PM	Plasma	Ok
23	03:06:18:080PM	Plasma	Ok
24	03:22:58:887PM	Plasma	Ok
25	03:42:04:400PM	Plasma	Ok
26	03:55:09:080PM	Plasma	Ok
27	04:17:10:910PM	Plasma	Ok
28	04:30:32:867PM	Plasma	Ok
29	04:43:11:510PM	Plasma	Ok
30	04:56:23:517PM	Plasma	Ok
31	05:10:39:287PM	Plasma	Ok