Re: another thought...

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From: W.J. Llope (llope_at_hbar.rice.edu)
Date: Fri Jan 24 2003 - 23:17:42 EST

hi again - just took a sec and captured an example of the
pedasphys string (blue text) i was referring to...
http://mac8.rice.edu/~TOF/TOFp/pedasphys.jpg

On Fri, 24 Jan 2003, W.J. Llope wrote:

>
> maybe crazy. but it did register.
>
> we're wondering why it seems like we getting pulsed in the
> middle of "physics runs".
>
> i often look at http://online.star.bnl.gov/Rates/
> when we're running.
> i recall often see during running that this page
> typically lists (in the blue text) Latest Run XXXXXX for... which
> includes the string 'pedAsPhys'
> i.e. i've seen the descriptor "pedestal as physics" for a trigger
> "type" often (this run and last run).
> i have no idea what this descriptor really means - i just thought
> i'd throw it out there since one might then suspect a 'ped
> as physics' run might be sending trigger command 4's... (?)
>
> anyway, i will redo that fcondition spectra
> including a new condition (6 bits) that all adcs=all & all
> tdcs=0 (the 'fake' data)
> and also for one of the localmon files from "before"
> all the changes when the 'local trigger efficiency' was ~26%....
>
> sorry for the confusion before. just to confirm,
> in the most recent data, ~15% is physics events,
> and the remainining 85% are all 'strobe' events
> but are half-and-half w.r.t. the pvpd singles scalers
> being zero or non-zero...
>
> comments?
> thanks,
> bill
>
> _________________________________________________________
> W.J. Llope, Ph.D. Res. Assoc. Professor
> http://wjllope.rice.edu/default.html
> llope_at_physics.rice.edu
> T.W. Bonner Nuclear Lab.
> Rice University, MS-315
> 6100 S. Main phone: 713-348-4741
> Houston, TX 77005-1892 fax: 713-348-5215
>
>
> 

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