Re: tofr hits.

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From: W.J. Llope (llope_at_physics.rice.edu)
Date: Sun Jan 19 2003 - 14:09:30 EST

o.k....
i do see tofr hits in the latest data.... not great ones though...
you'll see what i mean by looking at the attached GIF.

upper frame: TDC hit pattern (i.e. counts vs ch #)
        black: all TDC hits
        red: those TDC hits accompanied by an in-range ADC hit in same evt

upper frame: ADC hit pattern (i.e. counts vs ch #)
        black: all ADC hits
        red: those ADC hits accompanied by an in-range TDC hit in same evt

summary:
pvpd looks great.
except for the 5 missing cells and the missing fee board - TOFp looks good.
TOFr has lots of ADC hits not accompanied by TDC hits
        -> threshold too high?
and lots of TDC hits not accompanied by ADC hits
        -> huh? that's strange.

anyway there is certainly data in TOFr, which i will look
into in more detail on the laptop today/tonight. e.g. these definitions
of hit/not hit require adc/tdc software gates (clearly), which may
be a bit off at the moment... its possible i also have a mapping
problem, which of course would also confuse this kind of plot..

sorry for the confusion. more info when available...

bill 

-- 

  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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