The Right and Left references were opposite between
the medm screen verticalgun.adl and the new Mott measurement script
until October 10, 2002. I swapped the labels
of the thresholds on the medm screen to fix the problem. The bais sent
on the detectors via the ORTEC on #1 corresponds to the Mott script Right
(counter readings & SpektrumRechts).
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counter readings & Spektrum |
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The bais on the Silicon detectors are :
left : 38 V
right : 38 V
Note : The detectors are fragile and should
be biased with caution. Ramp the voltage when you turn them on
and do not exceed 40 V.
medm left : -1.579
V (ie : -648.5 dac)
medm right : -1.392 V (ie
: -572.0 dac)
The window width have been determined the same
day to be :
detector 1 : 0.27 V
(2.7 turns)
detector 2 : 0.27 V
(2.7 turns)
Note : detector 1 = Left
detector 2 = Right
Previously used settings:
The threshold values have been determine on May
2, 2002 to be :
medm left : -1.375
V (ie : -565 dac)
medm right : -1.600 V (ie
: -657 dac)
The window width have been determined the same
day to be :
detector 1 : 0.276 V
(2.76 turns)
detector 2 : 0.270 V
(2.70 turns)
Previously-1 used settings:
The threshold values have been determine on August
8, 2001 to be :
left : -1.54 V
(ie : -630 dac)
right :-1.54 V (ie : -630
dac)
The window width have been determined the same
day to be :
left : 0.38
V (3.8 turns)
right : 0.38 V
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Maintained by baylac@jlab.org