CTB/pVPD HV.....

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From: W.J. Llope (llope_at_physics.rice.edu)
Date: Tue Jan 21 2003 - 12:02:36 EST

hi jack - in between the last run and this one, someone
edited the CTB HV definitions map in such a way that the
pVPD HV settings have disappeared.... (sigh)...
a few days ago tom mcshane added our values: here's a msg
from geary summarizing that:

>What Tom did was edit a file demand.20030118 and add the pvpd hv values
>which were zero in this file. Whoever updated the ctb voltages for this
>year must have edited an old file without the pvpd values. The ctb values
>are in the same file. I don't think the new demand file will be
>effective until the trigger crate which controls the hv is rebooted. I'll
>ask Jack to reboot during the shutdown Wednesday.

so - we're thinking all that's needed is reboot of some trigger
crate...... is this somethign you can do? or who should i bug here?

some more details are below in case you need them....

thansk!
        bill

On Sun, 19 Jan 2003, W.J. Llope wrote:
>
> hi slow controls folks...
>
> TOF has a simple problem and we need your help a.s.a.p...
> BTW i tried and tried but couldn't find an email address for
> "Bill Wendt" (sp?) whom i'm told might be the guy to help me here...
> could any one of you guys forward this message to him too?
>
> last run dennis had set up the CTB HV GUI etc so
> that there were default pVPD HV values defined. in this case
> the shift crew just clicked pVPD ON or pVPD OFF and
> life was good.
> these settings have apparently disappeared since the
> last run, and our six default pVPD voltages are all zero now.
> this means some extra hassles for the shift crew, as they
> have to manually 'slide-up' our voltages each time they're
> powering up STAR after a new spill... the additional
> problem is that, to save time, right now i've just asked them
> to put all these at 2kV, which aren't really the values
> we want....
>
> so, can someone there revive the definitions of
> pVPD default HV values in the SC gui(s) the shift uses?
>
> the values we want are:
>
> pVPD ch. 1440 sl/ch # HV value (V)
> -------- ------------ ------------
> 1 (3/15) 1800
> 2 (4/15) 1927
> 3 (5/15) 2011
> 4 (6/15) 1764
> 5 (7/15) 2296
> 6 (8/15) 1886
>
> note the 1440 cr/sl values are unchanged since
> last run....
> thanks in advance! take care,
> bill
>
> p.s. i have a few add'l questions, but they can wait
> until this particular problem is fixed...... thanks again
>
> 

-- 

  W.J. Llope, Ph.D.                      Res. Assoc. Professor
  T.W. Bonner Nuclear Laboratory         phone:  713-348-4741
  Rice University, MS-315                fax:    713-348-5215
  6100 S. Main St.                  
  Houston, TX 77005-1892            
             e-mail:     llope_at_physics.rice.edu
             WWW home:   http://wjllope.rice.edu/default.html

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