Prototype Studies in Ferrara

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Prototype Studies in Ferrara
G. Cibinetto
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Plateau curves
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Plateau curves at different threshold
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Plateau curves at different time
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Efficiency measurement
Efficiency measurement setup
scintillator
AND
TRIGGER
Double layer prototype
scintillator
efficiency of the high resistivity prototype
using strips signals in 3 different conditions.
The results are very similar to the Princetons
ones.
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Charge distribution
Sum of the charge (in pC) of 8 1cm strips. Top
with both profile HV ON. Middle 1 profile ON,
same side strips. Bottom 1 profile ON and
opposite side strips.
Charge distribution (in pC) for a single wire.
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Looking inside a tube
looking at the wall between 2 cells with a lens
we can see very well the roughness probably made
by the machine cutting the extra millimetre from
the 9x9 tube. This could be a reason why some
profile cannot be stable at high voltage.