[BDXlist] Two-crystals comparison

[Andrea Celentano]

Dear all,
please find attached a plot showing the comparison of the two crystals 
currently installed in the proto setup @LNS.
The same analysis have been applied to both, and the results are 
compared, in term of energy spectra, for:
* All events
* Event in anti-coincidence with inner-veto
* Event in anti-coincidence with inner-veto
* Event in anti-coincidence with both veto

Crs #1 is the one which was already installed in the setup.
The two integrated rates from 10 MeV are:

#Crs 1: 0.001 Hz
#Crs 2: 0.002 Hz
(already including the "out-of-time" correction, applied separately to 
each of them in the corresponding analysis)

-> The overall rate is the same for CRS1 and CRS2, i.e. there is NOT a 
factor x2 there!
-> The anti-coincidence rates, in any configuration, is larger for CRS2 
than CRS1

(Marzio, Mariangela, Luca: are the two crystals the same shape? I 
calibrated Crs2 assuming, for cosmics, the same energy deposition in 
MeV. This is true if the two crystals have the same thickness)


Bests,
Andrea
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