Alcator C-Mod Run 1031118 Information

Back to runs

Miniproposals
Miniproposal:335
Date Filed: 5/2/2003
Title:Edge plasma flows in upper verus lower x-point discharges
First Author:Brian Labombard
Session Leader:Brian Labombard (shots 1-19)

Operators
Session leader(s):Brian Labombard
Physics operator(s):Bill Rowan
Engineering operator(s):Ed Fitzgerald,Bill Parkin,Bill Cochran

Engineering Operator Run Comment
MP #335-Edge plasma flows in upper vs lower x-point discharges. If comp

Session Leader Plans

Physics Operators Plans

Session Leader Summaries
Entered: Jul 7 2004 03:49:34:880PM
Author: Brian Labombard
Run Summary for 1031118, MP#335: "Edge plasma flows in upper versus lower x-point discharges"

Physics Operator: W. Rowan
Session Leader: B. LaBombard
________________________________________________________________________________
1031118 Run Plan

Purpose:
The primary purpose of these experiments is to investigate
the sensitivity of the magnitude and direction of the parallel plasma
flows (routinely observed in the edge plasma) to the magnetic
geometry, in particular upper, lower and double-null configurations.

Today's Run:
This run is a continuation from 1031114. Today we are looking
to finish the comparisons between single-null upper and lower
and then move on to double-null discharges. We also want to
revisit some NL04 = 0.6 and 0.7 discharges since John saw
no change in the core argon rotation on Friday going from
upper to lower null while the probes still saw large flows
in the inner wall.

For all shots, we want left gap to be 13 mm and right gap to be 15 mm
This will allow the ISP to reach the separatrix and provide a reasonable
SOL width at the outer midplane to look at flows.

NINJA gas setup is 400 torr helium (8 PSI).

All shots are nominally 0.8 MA, 5.3 tesla discharges
Optional RF conditioning after 1.2 s

Reload from shot#1031114027 with segment 3 turned on
Set density program (in segment 3!) to NL04 = 0.6

NOTE on shot#1031114027:
Segment 2 - single null lower
Segment 3 - single null upper
Segment 4 - double null

Shot Plan:
Single Null Upper (SNU)
1,2 - NL04 = 0.6,0.7 SNU

Switch to SNL
3,4 - NL04 = 0.6,0.7 SNL
5,6 - NL04 = 1.2, SNL

Switch back to SNU
7,8 - NL04 = 1.2, SNU

Begin density scan in DN configuration.

Shot#9,10 (DN)
Turn on segment 4
Program NL04 = 0.8x10^20 m^-2
Can proportional gain on SSEP be decreased to remove x-pt oscillations?
Increase right gap by 3 mm (to 15 mm). Decrease left gap by 3 mm (to 13 mm).
Check probe targeting.

11,12 - NL04 = 0.6, DN
13,14 - NL04 = 1.0, DN
15,16 - NL04 = 1.2, DN
________________________________________________________________________________
Result:
We got 10 data-quality shots today for a full run-day spent. (Computer related
problems soaked up most of the run time.) The SNU/SNL density scan is now complete.
The double-null density scan remains to be done. One would think this could be
accomplished by scheduling another half day....

Strong parallel flows were again detected by the probes, similar to the
overall behavior seen in recent days. The new data should provide us with
good profile data from all three probes (ASP,FSP,ISP) up to the separatrix.

A big surprise was the change in the behavior of core rotation seen today
compared to that seen last friday. On friday, John saw the rotation clearly depend
on SNU/SNL x-point location (more counter-rotation in SNU) for all densities except
the NL04 = 0.6 data points. Today, the rotation was strong counter-rotation,
independent of SNU/SNL and density! So either the measurement is suspect or
the core rotation cares about some other unidentified parameter. It will
be interesting to see if corresponding differences are present in the
Mach probe data.

Shot Summary:
[values in () are probe rest positions for future reference]

1,2 - cycle tests
3,4,5 - no power shots
6 - SNU, NL04 = 0.54 and rising - ASP(+8.5), FSP(+8.5), ISP - good data
7 - SNU, NL04 = 0.6 and rising to 0.8 - ASP(+8.5), FSP(+8.5), ISP - good data
8 - SNU, NL04 = 1.2 -> 1.4 - ASP(+8.5), FSP(+8.5), ISP - could be deeper
9 - SNU, NL04 = 1.2 -> 1.4 - ASP(+9.5), FSP(+9.5), ISP - could be deeper
ISP shows very little density - looks like detachment
10 - dud
11 - SNU, NL04 = 1.05 -> 1.2 - ASP(+10), FSP(+11), ISP
12 - fizzle
13 - SNU, NL04 = 0.9 -> 1.0 - ASP(+9), FSP(+11), ISP
14 - disrupted early
....... long computer-problem delay.....
15 - SNL, NL04 = 1.1 -> 1.4 - ASP(+8.5), FSP(-4), ISP - good data
16 - SNL, NL04 = 1.15 -> 1.33 - ASP(+8.5), FSP(-4), ISP - good data
17 - SNL, NL04 = 0.6 -> 0.7 - ASP(+8.5), FSP(-4), ISP - good data
18 - SNL, NL04 = 0.67 -> 0.75 - ASP(+9), FSP(-4), ISP - excellent data
19 - Early disruption


Physics Operator Summaries
Entered: Jul 7 2004 04:37:19:740PM
Author: Bill Rowan
Run Plan for 11/18/03

Purpose: MP #335-Edge plasma flows in upper vs lower x-point discharges
Session Leader: LaBombard

If MP335 completed, go on to
Purpose: MP #363 LH Threshold
Session Leader: Hubbard

Physics operator: Rowan
Engineering operators: Cochran, Fitzgerald, Parkin


-----------------------------------------------------------------------------
Summary
This was a continuation of run 1031114. Starting from shot 1031114027, we
completed density scans in SNU and SNL configurations.

There was one dud during this run which was due to a power systems problem.
There were two disruptions at early times (approximately 0.15 s). Shots
before and after the two disruptions were okay. It is not clear from the
data what caused the disruptions. Possibly something fell in.

After shot 014, there was a problem with the RAID. This was corrected, but
required more than three hours and time lost there accounted for the small
number of shots on an otherwise quite successful day.

The absence of fizzles -- a hallmark of last week's runs -- was encouraging.

We did not complete the double null part of MP 335 and did not start on
MP 363.

-----------------------------------------------------------------------------
Score card
Useful Plasmas 16
Early disruptions 2
Fizzles 0
Duds 1 (due to power systems)

Total 19


-----------------------------------------------------------------------------
Log

Engineering Setup and Run Plan for 11/18/03

Purpose: MP #335-Edge plasma flows in upper vs lower x-point discharges
Session Leader: LaBombard

If MP335 completed, go on to
Purpose: MP #363 LH Threshold
Session Leader: Hubbard

Physics operator: Rowan

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

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

Power systems the same as on 1031114027

A-coils should be hooked up as on 1031114027 (+Dtop -Dbot -Jtop +Jbot).
Enable the power supply.

Gas setup:
fill B-Top with 6 psi D2 Hybrid enabled (PG4)
fill B-side lower with 1 psi Ar Hybrid enabled (PG1)
leave B-side upper as is Hybrid DISABLED (PG2)
fill C-side with 30 psi D2 Hybrid enabled (PG3)

Enable the following gate valves, assuming no vacuum problems:
ECE, VUV, DNB


RF Setup:Transmitters 1,2,3 & 4 in Run On by 08:00.


------------------------------------------------------------------------------
Run Plan for MP 335

MP#335 - Edge plasma flows in upper versus lower x-point discharges

Purpose:
The primary purpose of these experiments is to investigate
the sensitivity of the magnitude and direction of the parallel plasma
flows (routinely observed in the edge plasma) to the magnetic
geometry, in particular upper, lower and double-null configurations.

Today's Run:
This run is a continuation from 1031114. Today we are looking
to finish the comparisons between single-null upper and lower
and then move on to double-null discharges. We also want to
revisit some NL04 = 0.6 and 0.7 discharges since John saw
no change in the core argon rotation on friday going from
upper to lower null while the probes still saw large flows
in the inner wall.

For all shots, we want left gap to be 13 mm and right gap to be 15 mm
This will allow the ISP to reach the separatrix and provide a reasonable
SOL width at the outer midplane to look at flows.

NINJA gas setup is 400 torr helium (8 PSI).

All shots are nominally 0.8 MA, 5.3 tesla discharges
Optional RF conditioning after 1.2 s

Reload from shot#1031114027 with segment 3 turned on
Set density program (in segment 3!) to NL04 = 0.6

NOTE on shot#1031114027:
Segment 2 - single null lower
Segment 3 - single null upper
Segment 4 - double null

Shot Plan:
Single Null Upper (SNU)
1,2 - NL04 = 0.6,0.7 SNU

Switch to SNL (segment 2)
3,4 - NL04 = 0.6,0.7 SNL
5,6 - NL04 = 1.2, SNL

Switch back to SNU
7,8 - NL04 = 1.2, SNU

Begin density scan in DN configuration.

Shot#9,10 (DN)
Turn on segment 4
Program NL04 = 0.8x10^20 m^-2
Can proportional gain on SSEP be decreased to remove x-pt oscillations?
Increase right gap by 3 mm (to 15 mm). Decrease left gap by 3 mm (to 13 mm).
Check probe targeting.

11,12 - NL04 = 0.6, DN
13,14 - NL04 = 1.0, DN
15,16 - NL04 = 1.2, DN

------------------------------------------------------------------------------

Run Plan for MP 363

1) Establish the optimum shape for USN plasmas which gives the best pedestal
region coverage and signal/noise on edge TS. Start from shots on in Brian's
MP (11/14 and 11/18 am). Adjust shape as indicated by Jerry; cell access to
adjust fibre positions if needed. This will determine kappa and delta for the
other configurations.

2) Switch to LSN. 800 kA, ~ 5.4 T. 3-4 shots.
a) Power ramp up to ~ 3 MW, to determine L-H threshold.
b) Discharge with fixed power just below threshold, for 100-200 ms, followed by high power phase (4-5 MW). Repeat as needed for probe, HIREX.

3) Switch to DN . 5-6 discharges.
a) 2 Discharges at power which gave L-H threshold in LSN (eg. 1 MW). Document ETS profiles, flows, rotation.
b) Power ramp to maximum available (5 MW>) to determine the new L-H threshold.
c) As above, make discharges with power just below L-H transition for ~ 200 ms, followed by higher power to get H-mode phase.



001. Cycle test.
The first test hung and then freed up on its own.

002. Cycle test
The second cycle test was successful.

003. No power shot.
Alternator fault.
EF1 fault.

004. No power shot.

005. No power shot.


006. Plasma.

Next shot: increase the density. Nl04 from 0.6 to 0.7 in segment 3
Increase argon puff to 40 ms. PG1

007. Plasma.

Next shot: nlo4 increased from 0.7e+19 to 1.2e+20.

008. Plasma. Nl04 = 1.2e+20 at 0.75 s
Dsiruption on the rampdown at approximately 0.5 MA

Next shot. Decrease left gap from 1.5 to 1.2 cm.

009. Plasma.
Left gap is approximately 1.3 cm
Right gap unchanged.

Next shot.
Decrease nl04 to approximately 1.1e+20

Data system hang after shot 009. In the init phase for the next shot.
Shot counter did not increment.

010. Dud
EF3 breaker opened at the beginning of the shot.

Next shot: No pcs changes

011. Plasma.
Nl04 = 1.1e20

Next shot: Reduce the density. Nl04 to 0.9e+20


012. Fizzle

Reduce the segment 01 gas puff from 22 ms to 20 ms.

013. Plasma
G-side pressure is 0.07 mT.
Difficult to believe that the pressure is what caused the fizzle on the previous shot.

Next shot.
Switch to SNL with a nl04 request of 1.2e+20. Segment 2

014. Disruption.

Next shot. Reload segment 2 from 1031114019. That was the last time that
this segment was successfully run.

Computer problems for several hours.
Restarted pcs
Reloaded 1031118013
Loaded seg 2 from 1031114019
Turned on seg 2

015. Plasma. This is the SNL discharge that we attempted first on 014.

Next shot: No pcs changes

016. Plasma.

Next shot. Decrease density. Nl04 = 0.5e+20

017. Plasma
nelo4 = 5.5 to 6.5e+19

Next shot. Increase density. Nl04 = 6.5e+19

018. Plasma.
Nel04 = 7.2e+19

Next shot. Decrease density to 4.5e+19

019. Plasma. Disruption at 0.17 s.
Similar to shot 014.

Last shot.





















Session Leader Comments
Nov 18 2003 08:44:13:790AMBrian Labombard1031118 Run Plan

MP#335 - Edge plasma flows in upper versus lower x-point discharges

Purpose:
The primary purpose of these experiments is to investigate
the sensitivity of the magnitude and direction of the parallel plasma
flows (routinely observed in the edge plasma) to the magnetic
geometry, in particular upper, lower and double-null configurations.

Today's Run:
This run is a continuation from 1031114. Today we are looking
to finish the comparisons between single-null upper and lower
and then move on to double-null discharges. We also want to
revisit some NL04 = 0.6 and 0.7 discharges since John saw
no change in the core argon rotation on Friday going from
upper to lower null while the probes still saw large flows
in the inner wall.

For all shots, we want left gap to be 13 mm and right gap to be 15 mm
This will allow the ISP to reach the separatrix and provide a reasonable
SOL width at the outer midplane to look at flows.

NINJA gas setup is 400 torr helium (8 PSI).

All shots are nominally 0.8 MA, 5.3 tesla discharges
Optional RF conditioning after 1.2 s

Reload from shot#1031114027 with segment 3 turned on
Set density program (in segment 3!) to NL04 = 0.6

NOTE on shot#1031114027:
Segment 2 - single null lower
Segment 3 - single null upper
Segment 4 - double null

Shot Plan:
Single Null Upper (SNU)
1,2 - NL04 = 0.6,0.7 SNU

Switch to SNL
3,4 - NL04 = 0.6,0.7 SNL
5,6 - NL04 = 1.2, SNL

Switch back to SNU
7,8 - NL04 = 1.2, SNU

Begin density scan in DN configuration.

Shot#9,10 (DN)
Turn on segment 4
Program NL04 = 0.8x10^20 m^-2
Can proportional gain on SSEP be decreased to remove x-pt oscillations?
Increase right gap by 3 mm (to 15 mm). Decrease left gap by 3 mm (to 13 mm).
Check probe targeting.

11,12 - NL04 = 0.6, DN
13,14 - NL04 = 1.0, DN
15,16 - NL04 = 1.2, DN
Nov 18 2003 10:12:44:547AM1031118006Brian LabombardShot - 6 Upper single Null, NL04 = 0.54 and rising (NINJA-fueled)
ASP, FSP, ISP scanning at 0.75, 0.95, and 1.15 s
ASP - good data
FSP - good data
ISP - good data

Next Shot: go to NL04 = 0.7
Nov 18 2003 10:28:00:840AM1031118007Brian LabombardShot - 7 Upper single Null, NL04 = 0.6 to 0.8 (NINJA-fueled)
ASP, FSP, ISP scanning at 0.75, 0.95, and 1.15 s
ASP - good data
FSP - good data
ISP - good data

Next Shot: go to NL04 = 1.2
Nov 18 2003 10:58:53:377AM1031118008Brian LabombardShot - 8 Upper single Null, NL04 = 1.2 to 1.4 (NINJA-fueled)
ASP, FSP, ISP scanning at 0.75, 0.95, and 1.15 s
ASP - good data - could be deeper
FSP - good data - could be deeper
ISP - good data - could be deeper

Next Shot: repeat with left gap at 12 mm and ASP,FSP deeper
Nov 18 2003 11:04:47:050AM1031118009Brian LabombardShot - 9 Upper single Null, NL04 = 1.2 to 1.4 (NINJA-fueled)
ASP, FSP, ISP scanning at 0.75, 0.95, and 1.15 s
ASP - good data - could be deeper
FSP - good data - could be deeper
ISP - good data - data ok

ISP sees very low density. Looks like some detachment phenomenon

Next Shot: go to NL04 = 1.1
Nov 18 2003 12:12:40:457PM1031118013Brian LabombardShot - 13 Upper single null, NL04 = 0.9 to 1.0
ASP, FSP, ISP scanning at 0.75, 0.95, and 1.15 s
ASP - good data
FSP - good data
ISP - good data

No more detachment effect. ISP sees strong flows.

Next Shot: go to Lower single null, NL04 = 1.2
Nov 18 2003 04:24:59:113PM1031118015Brian LabombardShot - 15 Lower single null, NL04 = 1.1 to 1.4
ASP, FSP, ISP scanning at 0.75, 0.95, and 1.15 s
ASP - good data
FSP - good data
ISP - good data



Next Shot: repeat, looking for higher density
Nov 18 2003 04:33:00:237PM1031118016Brian LabombardShot - 16 Lower single null, NL04 = 1.15 to 1.4
ASP, FSP, ISP scanning at 0.75, 0.95, and 1.15 s
ASP - good data
FSP - good data
ISP - good data

Next Shot: go to NL04 = 0.6
Nov 18 2003 05:00:29:833PM1031118017Brian LabombardShot - 17 Lower single null, NL04 = .6 to .7
ASP, FSP, ISP scanning at 0.75, 0.95, and 1.15 s
ASP - good data
FSP - good data
ISP - good data

Next Shot: go to NL04 = 0.7
Nov 18 2003 05:02:16:550PM1031118018Brian LabombardShot - 18 Lower single null, NL04 = .67 to .75
ASP, FSP, ISP scanning at 0.75, 0.95, and 1.15 s
ASP - good data
FSP - good data
ISP - good data

Next Shot: go to NL04 = 0.5

Physics Operator Comments
Nov 18 2003 08:10:08:797AMBill RowanEngineering Setup and Run Plan for 11/18/03

Purpose: MP #335-Edge plasma flows in upper vs lower x-point discharges
Session Leader: LaBombard

If MP335 completed, go on to
Purpose: MP #363 LH Threshold
Session Leader: Hubbard

Physics operator: Rowan

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

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

Power systems the same as on 1031114027

A-coils should be hooked up as on 1031114027 (+Dtop -Dbot -Jtop +Jbot).
Enable the power supply.

Gas setup:
fill B-Top with 6 psi D2 Hybrid enabled (PG4)
fill B-side lower with 1 psi Ar Hybrid enabled (PG1)
leave B-side upper as is Hybrid DISABLED (PG2)
fill C-side with 30 psi D2 Hybrid enabled (PG3)

Enable the following gate valves, assuming no vacuum problems:
ECE, VUV, DNB


RF Setup:Transmitters 1,2,3 & 4 in Run On by 08:00.


------------------------------------------------------------------------------
Run Plan for MP 335

MP#335 - Edge plasma flows in upper versus lower x-point discharges

Purpose:
The primary purpose of these experiments is to investigate
the sensitivity of the magnitude and direction of the parallel plasma
flows (routinely observed in the edge plasma) to the magnetic
geometry, in particular upper, lower and double-null configurations.

Today's Run:
This run is a continuation from 1031114. Today we are looking
to finish the comparisons between single-null upper and lower
and then move on to double-null discharges. We also want to
revisit some NL04 = 0.6 and 0.7 discharges since John saw
no change in the core argon rotation on friday going from
upper to lower null while the probes still saw large flows
in the inner wall.

For all shots, we want left gap to be 13 mm and right gap to be 15 mm
This will allow the ISP to reach the separatrix and provide a reasonable
SOL width at the outer midplane to look at flows.

NINJA gas setup is 400 torr helium (8 PSI).

All shots are nominally 0.8 MA, 5.3 tesla discharges
Optional RF conditioning after 1.2 s

Reload from shot#1031114027 with segment 3 turned on
Set density program (in segment 3!) to NL04 = 0.6

NOTE on shot#1031114027:
Segment 2 - single null lower
Segment 3 - single null upper
Segment 4 - double null

Shot Plan:
Single Null Upper (SNU)
1,2 - NL04 = 0.6,0.7 SNU

Switch to SNL (segment 2)
3,4 - NL04 = 0.6,0.7 SNL
5,6 - NL04 = 1.2, SNL

Switch back to SNU
7,8 - NL04 = 1.2, SNU

Begin density scan in DN configuration.

Shot#9,10 (DN)
Turn on segment 4
Program NL04 = 0.8x10^20 m^-2
Can proportional gain on SSEP be decreased to remove x-pt oscillations?
Increase right gap by 3 mm (to 15 mm). Decrease left gap by 3 mm (to 13 mm).
Check probe targeting.

11,12 - NL04 = 0.6, DN
13,14 - NL04 = 1.0, DN
15,16 - NL04 = 1.2, DN

------------------------------------------------------------------------------

Run Plan for MP 363

1) Establish the optimum shape for USN plasmas which gives the best pedestal
region coverage and signal/noise on edge TS. Start from shots on in Brian's
MP (11/14 and 11/18 am). Adjust shape as indicated by Jerry; cell access to
adjust fibre positions if needed. This will determine kappa and delta for the
other configurations.

2) Switch to LSN. 800 kA, ~ 5.4 T. 3-4 shots.
a) Power ramp up to ~ 3 MW, to determine L-H threshold.
b) Discharge with fixed power just below threshold, for 100-200 ms, followed by high power phase (4-5 MW). Repeat as needed for probe, HIREX.

3) Switch to DN . 5-6 discharges.
a) 2 Discharges at power which gave L-H threshold in LSN (eg. 1 MW). Document ETS profiles, flows, rotation.
b) Power ramp to maximum available (5 MW>) to determine the new L-H threshold.
c) As above, make discharges with power just below L-H transition for ~ 200 ms, followed by higher power to get H-mode phase.
Nov 18 2003 09:04:39:200AM1031118001Bill Rowan001. Cycle test
Nov 18 2003 09:05:02:713AM1031118002Bill Rowan002. Cycle test. Second test was successful
Nov 18 2003 09:17:52:600AM1031118003Bill Rowan003. No power shot.
Nov 18 2003 09:51:55:517AM1031118005Bill Rowan005. No power shot.
Nov 18 2003 10:04:03:167AM1031118006Bill Rowan006. Plasma.
Nov 18 2003 10:13:02:390AM1031118006Bill Rowan

Next shot: increase the density. Nl04 from 0.6 to 0.7 in segment 3
Increase Ar puff to 40 ms PG1
Nov 18 2003 10:24:14:650AM1031118007Bill Rowan007. Plasma.

Next shot: nlo4 increased from 0.7e+19 to 1.2e+20.
Nov 18 2003 10:34:31:440AM1031118008Bill Rowan008. Plasma. nl04 = 1.2e+20 at 0.75 s
Nov 18 2003 10:43:27:837AM1031118008Bill RowanNext shot. Decrease left gap from 1.5 to 1.2 cm.
Nov 18 2003 10:58:44:833AM1031118009Bill Rowan009. Plasma.
Left gap is approximately 1.3 cm
Right gap unchanged.

Next shot.
Decrease nl04 to approximately 1.1e+20
Nov 18 2003 11:27:17:033AM1031118009Bill Rowan
Data system hang after shot 009. In the init phase for the next
shot. Shot counter did not increment.
Nov 18 2003 11:24:50:847AM1031118010Bill Rowan010. Dud
EF3 breaker opened at the beginning of the shot.

Next shot: No pcs changes
Nov 18 2003 11:41:06:660AM1031118011Bill Rowan011. Plasma.
Nl04 = 1.1e20

Next shot: Reduce the density. Nl04 to 0.9e+20
Nov 18 2003 11:59:35:660AM1031118012Bill Rowan012. Fizzle

Reduce the segment 01 gas puff from 22 ms to 20 ms.
Nov 18 2003 12:05:29:533PM1031118013Bill Rowan013. Plasma
G-side pressure is 0.07 mT.
Difficult to believe that the pressure is what caused the fizzle on the previous shot.

Nov 18 2003 12:11:48:080PM1031118013Bill Rowan013. Plasma
G-side pressure is 0.07 mT.
Difficult to believe that the pressure is what caused the fizzle on the previous shot.

Next shot.
Switch to SNL with a nl04 request of 1.2e+20. Segment 2
Nov 18 2003 01:09:15:800PM1031118014Bill RowanThere will be at least a one hour delay beginning at 1pm.

No guarantee for the rest of the day.

Stay tuned
Nov 18 2003 04:10:44:987PM1031118014Bill RowanComputer problems for several hours.
Restarted pcs
Reloaded 1031118013
Loaded seg 2 from 1031114019
Turned on seg 2
Nov 18 2003 04:18:26:567PM1031118015Bill Rowan015. Plasma. This is the SNL discharge that we attempted first on 014.

Nov 18 2003 04:19:20:160PM1031118015Bill Rowan
Next shot: No pcs changes

Nov 18 2003 04:35:58:770PM1031118016Bill Rowan016. Plasma.

Next shot. Decrease density. Nl04 = 0.5e+20
Nov 18 2003 04:47:41:473PM1031118017Bill Rowan017. Plasma
nelo4 = 5.5 to 6.5e+19

Next shot. Increase density. Nl04 = 6.5e+19
Nov 18 2003 05:03:02:470PM1031118018Bill Rowan018. Plasma.
Nel04 = 7.2e+19

Next shot. Decrease density to 4.5e+19
Nov 18 2003 05:10:06:643PM1031118019Bill Rowan019. Plasma. Disruption at 0.17 s.
Similar to shot 014.

Last shot.

Engineering Operator Comments
ShotTimeTypeStatusComment
108:44:39:683AMTestOkshot cycle test
208:59:14:960AMTestOkshot cycle test
309:13:24:207AMPlasmaBadEF1L Charging Fault & Alt Flt
409:38:01:020AMTestBadEF1L charging test
509:49:12:530AMTestOk
610:01:30:977AMPlasmaOk
710:15:42:347AMPlasmaOk
810:28:12:607AMPlasmaOk
910:44:57:980AMPlasmaOk
1011:20:47:270AMPlasmaBadEF3 Breaker Tripped in Check
1111:33:17:660AMPlasmaOk
1211:47:14:677AMPlasmaOk
1312:00:46:737PMPlasmaOk
1412:13:56:880PMPlasmaOk
1504:12:44:720PMPlasmaOk
1604:26:44:253PMPlasmaOk
1704:40:00:707PMPlasmaOk
1804:52:51:020PMPlasmaOk
1905:05:38:690PMPlasmaOk