Alcator C-Mod Run 971028 Information

Miniproposals

Miniproposal:

Date Filed:

Title:

First Author:

Session Leader: Unknown (shots 1-12)

Operators
Session leader(s):	Unknown
Physics operator(s):	Steve Wolfe
Engineering operator(s):	Vinny Bertolino,Frank Silva

Engineering Operator Run Comment
power tests with alternator

Session Leader Plans

Physics Operators Plans

Session Leader Summaries

Physics Operator Summaries

Entered: Jul 7 2004 04:36:57:880PM

Author: To Be Determined

PhysOp Summary for 971028

Power Testing in preparation for operation

SL: none
PO: wolfe
EO: silva/bertolino

The morning was devoted to a checkout of the boronization system. Following a
full run-through with helium, the diborane bottle was installed in the cell.

NOTE: The cell is now off-limits to all non-Alcator personnel (per safety
office).

Josh ran a series of five data system tests in the morning. He has renamed the
CAMAC servers, and changed the configuration of highway drivers. We now have
four highways on three SCSI bus lines from DAQA; DAQ1 is not in use. There was
some problem with two Jorway drivers on the same SCSI bus. (see notes by JAS
under MDSPlus in logbook).

I loaded a PCS from 970625003 (an 800kA, 5Tesla shot) which looks like a good
startup candidate from June. Note that it was necessary to touch a trace in
ALL_V in each segment to get the PULSE_GAS5 output (added 970626) to
register. Then ran coldstart (HYBINIT_DISPATCH). Coldstart
ran without errors. Note that this shot is still loaded in PCS_MODEL as of the
end of the run, since we never set up any special power test segments.

Some ECDC for Nachtreib after boronization run-through, while we wait.

Alternator was brought up to speed by 12:00. Machine still cooling down; may
not be ready for full current pulses today.

Starting around 14:00, breakers and e-stop was tested. Access fault and
ground-fault response were tested. EF3 breaker did not pull on ground
fault. No EF3 power test until this is traced and fixed.

It turns out the field voltage and current instrumentation was not
connected to CAMAC. They were removed because of suspected influence on the
rotor temperature measurement, later found not to be the case. Bill Cochrane
reconnected these before shot 7. In the mean time, we did a TMX test which
would not require the alternator.

shot 6: TMX PLC test. Extra ripple on EF2L. EF4L rogowski is apparently not
working

shot 7: Alternator excitation only test. Looks ok at 13.4KV. One PT signal
(formerly not working) is still not working. The field voltage signal is bad,
noisy and doesn't look at all like the excitation voltage.

shot 8: EFC test - ok. A voltage source plugged into the field voltage signal
looks ok.

shot 9: Another alternator 13.4kV test, with Cochrane looking at the signal;
he sees garbage with 5V peaks, which is consistent with the CAMAC signal.

shot 10: EF2 test again, to see if Vinnie fixed the demand signal. Still not
working, and the EF2L ripple is worse.

shot 11: alternator excitation again. Field voltage signal is fixed.

shot 12: 5Ka OH test (PLC control). All ok.

Summmary:
---------
Things went well, as far as we got. The alternator is behaving well, which is
the main thing. The only 13.8 supplies we exercised were the OH's, at 5KA
under PLC control. These looked fine; oh coax resistance readings were also
ok. EFC ran properly (hybrid control). The EF2's were run under PLC control,
but EF2L seemed to have a lot of ripple, possibly a regulator problem.

Problems to be dealt with tomorrow morning:
-------------------------------------------
1) EF3 ground fault trip not working
2) EF4L rogowski not working
3) EF2L supply has excesssive ripple under PLC control
4) EF2 hybrid demand signals not being digitized at the supply; seems to be a
CAMAC setup problem.
5) There seems to be a flourecent light under the machine that is failing,
causing an annoying flashing on the under-machine tv camera.

Session Leader Comments

Physics Operator Comments

Oct 28 1997 11:12:52:650AM Steve Wolfe Setting up for power tests later today.
Note there have already been 5 shots for data system testing with the new CAMAC_SERVER
names.

Fire up PCS- I need to figure out how to get the small font on a fileview window.
Load from 970625003 (800kA 5.3T shot)
Note the following message on compilation:
% XMANAGER: The MODAL keyword to the XMANAGER procedure is obsolete. It is
superseded by the MODAL keyword to the WIDGET_BASE function.

Go to ALL_V in each segment and touch a trace to pick up new output name for PULSE_GAS5
Do a LOAD_CLEAN - looks successful.

Oct 28 1997 11:21:43:270AM Steve Wolfe Get set to do a coldstart:

BAROLO$ cd cmod$models:[hybrid.tcl]
BAROLO$ @HYBINIT_DISPATCH.COM;2
$! This dcl command file invokes hyb_init.tcl to force
$! the hybrid to load the current model.
$ tcl @hyb_dis_init
set ver
set command hybrid$commands
dispatch/command/server=hloader_server/wait/table=hybrid reset counters
coldstart
set tree cmod
set def \hybrid::bit_wavegen
set def "-"
dispatch wavegen:INIT_ACTION
do/method wavegen wait
dispatch A:init_action
do/method a wait
dispatch M:init_action
do/method m wait
dispatch pid:init_action
do/method pid wait
dispatch rt_node:exec_action
dispatch/command/server=hloader_server/wait/table=hybrid show counters
@HYB_DIS_INIT
BAROLO$

Oct 28 1997 11:24:56:360AM Steve Wolfe Log files look ok.
Coldstart seems to have worked.

Oct 28 1997 02:57:44:780PM 971028006 Steve Wolfe It turns out the new rotor voltage and current instrumentation were disconnected from CAMAC.
Therefore we will only test TMX supplies today.

Shot 6
------
EF2 PLC test

Test looks good. Irby reports EF4 lower rogowski doesn't see the same pickup as EF4U.
EF2L voltage looks funny - lots of ripple. All supplies see it in phase; maybe something
modulating the regulator.

Oct 28 1997 03:25:49:060PM 971028007 Steve Wolfe shot 7:
Bill has reconnected the alternator field instrumentation after all.
This shot will be a cycle with no supplies energized, to look at the alternator with excitation.
Most diagnostic trees turned off. Breakers all open. THis will be an alternator excitation only test
(josh has edited the cmod-announce routine to correct an IDL V5-related bug.)

Ramped up to 13.4kV and ran through ok. No problems at alternator.
Traces look ok, except Vinnie reports a PT signal is not fixed.

DAve and Vinnie are looking closely at the exciter voltage signal.

Oct 28 1997 03:56:58:440PM 971028008 Steve Wolfe shot 8:
the field voltage signal looked bad on #7- lots of noise, didn't look like exciter supply
voltage. This time that signal is to be replaced by a voltage source.

Also add an EFC test (normal hybrid control, the f.d. should take it out at 80msec)
EFC looks ok.

Field voltage signal looks like it should, plus a little noise. So the amp and CAMAC are ok.

Oct 28 1997 04:10:51:040PM 971028009 Steve Wolfe shot 9:
Alternator excitation again. Bill will look at the signal on a scope.
He sees garbage with 5V peaks.

Oct 28 1997 04:28:32:040PM 971028010 Steve Wolfe shot 10:
Alternator excitation again. Bill will look at the signal on a scope.
Vinnie has turned on the TMX L8212_2 camac, which has the ef2 hybrid demand on it, in
the engineering tree; it was off. Run an EF2 pulse.

EF2 went; ripple on EF2L is worse. Still no signal on the digitized demand. Got CAMAC errors on
that and the alternator CAMAC.

Oct 28 1997 04:35:34:570PM 971028011 Steve Wolfe shot 11:
Alternator excitation again.
Field voltage signal is fixed. Note that it doesn't have the same 60cycle ripple as the exciter
supply signal.

Oct 28 1997 04:53:26:090PM 971028012 Steve Wolfe shot 12:
5KA OH test (PLC control).
No finite signal errors on f08,f14,f20,bp06_bc,bp12_jk
The partials are expected. bp06_bc and bp12_jk look ok, about 20mV each; must be at the
program's threshold.

TWF points out that the TMX module l8212_2 is not set up correctly in the tree, which explains
why we aren't seeing the hybrid demand signal to the EF2's. Note that the signal is probably
fine, we just aren't digitizing it at that end.

Engineering Operator Comments

Shot Time Type Status Comment

1 08:35:28:810AM Test Ok

2 08:46:10:320AM Test Ok

3 08:55:02:370AM Test Ok

4 09:38:13:070AM Test Ok

5 09:51:46:400AM Test Ok

6 02:39:15:420PM Test Ok

7 03:07:11:410PM Test Ok

8 03:54:04:030PM Test Ok

9 04:03:38:310PM Test Ok

10 04:21:34:810PM Test Ok

11 04:29:44:570PM Test Ok

12 04:40:06:140PM Test Ok

Physics Operator Comments
Oct 28 1997 11:12:52:650AM		Steve Wolfe	Setting up for power tests later today. Note there have already been 5 shots for data system testing with the new CAMAC_SERVER names. Fire up PCS- I need to figure out how to get the small font on a fileview window. Load from 970625003 (800kA 5.3T shot) Note the following message on compilation: % XMANAGER: The MODAL keyword to the XMANAGER procedure is obsolete. It is superseded by the MODAL keyword to the WIDGET_BASE function. Go to ALL_V in each segment and touch a trace to pick up new output name for PULSE_GAS5 Do a LOAD_CLEAN - looks successful.
Oct 28 1997 11:21:43:270AM		Steve Wolfe	Get set to do a coldstart: BAROLO$ cd cmod$models:[hybrid.tcl] BAROLO$ @HYBINIT_DISPATCH.COM;2 $! This dcl command file invokes hyb_init.tcl to force $! the hybrid to load the current model. $ tcl @hyb_dis_init set ver set command hybrid$commands dispatch/command/server=hloader_server/wait/table=hybrid reset counters coldstart set tree cmod set def \hybrid::bit_wavegen set def "-" dispatch wavegen:INIT_ACTION do/method wavegen wait dispatch A:init_action do/method a wait dispatch M:init_action do/method m wait dispatch pid:init_action do/method pid wait dispatch rt_node:exec_action dispatch/command/server=hloader_server/wait/table=hybrid show counters @HYB_DIS_INIT BAROLO$
Oct 28 1997 11:24:56:360AM		Steve Wolfe	Log files look ok. Coldstart seems to have worked.
Oct 28 1997 02:57:44:780PM	971028006	Steve Wolfe	It turns out the new rotor voltage and current instrumentation were disconnected from CAMAC. Therefore we will only test TMX supplies today. Shot 6 ------ EF2 PLC test Test looks good. Irby reports EF4 lower rogowski doesn't see the same pickup as EF4U. EF2L voltage looks funny - lots of ripple. All supplies see it in phase; maybe something modulating the regulator.
Oct 28 1997 03:25:49:060PM	971028007	Steve Wolfe	shot 7: Bill has reconnected the alternator field instrumentation after all. This shot will be a cycle with no supplies energized, to look at the alternator with excitation. Most diagnostic trees turned off. Breakers all open. THis will be an alternator excitation only test (josh has edited the cmod-announce routine to correct an IDL V5-related bug.) Ramped up to 13.4kV and ran through ok. No problems at alternator. Traces look ok, except Vinnie reports a PT signal is not fixed. DAve and Vinnie are looking closely at the exciter voltage signal.
Oct 28 1997 03:56:58:440PM	971028008	Steve Wolfe	shot 8: the field voltage signal looked bad on #7- lots of noise, didn't look like exciter supply voltage. This time that signal is to be replaced by a voltage source. Also add an EFC test (normal hybrid control, the f.d. should take it out at 80msec) EFC looks ok. Field voltage signal looks like it should, plus a little noise. So the amp and CAMAC are ok.
Oct 28 1997 04:10:51:040PM	971028009	Steve Wolfe	shot 9: Alternator excitation again. Bill will look at the signal on a scope. He sees garbage with 5V peaks.
Oct 28 1997 04:28:32:040PM	971028010	Steve Wolfe	shot 10: Alternator excitation again. Bill will look at the signal on a scope. Vinnie has turned on the TMX L8212_2 camac, which has the ef2 hybrid demand on it, in the engineering tree; it was off. Run an EF2 pulse. EF2 went; ripple on EF2L is worse. Still no signal on the digitized demand. Got CAMAC errors on that and the alternator CAMAC.
Oct 28 1997 04:35:34:570PM	971028011	Steve Wolfe	shot 11: Alternator excitation again. Field voltage signal is fixed. Note that it doesn't have the same 60cycle ripple as the exciter supply signal.
Oct 28 1997 04:53:26:090PM	971028012	Steve Wolfe	shot 12: 5KA OH test (PLC control). No finite signal errors on f08,f14,f20,bp06_bc,bp12_jk The partials are expected. bp06_bc and bp12_jk look ok, about 20mV each; must be at the program's threshold. TWF points out that the TMX module l8212_2 is not set up correctly in the tree, which explains why we aren't seeing the hybrid demand signal to the EF2's. Note that the signal is probably fine, we just aren't digitizing it at that end.

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	08:35:28:810AM	Test	Ok
2	08:46:10:320AM	Test	Ok
3	08:55:02:370AM	Test	Ok
4	09:38:13:070AM	Test	Ok
5	09:51:46:400AM	Test	Ok
6	02:39:15:420PM	Test	Ok
7	03:07:11:410PM	Test	Ok
8	03:54:04:030PM	Test	Ok
9	04:03:38:310PM	Test	Ok
10	04:21:34:810PM	Test	Ok
11	04:29:44:570PM	Test	Ok
12	04:40:06:140PM	Test	Ok