proposal for a barrel prototype H. Álvarez-Pol, J. Benlliure, E. Casarejos, D. Cortina, I. Durán, M. Gascón Status of the USC 27 th September

1 cm 3 CsI(Tl) + LAAPD Hamamatsu S Barrel prototype proposal 2

 Realistic frustum-shaped crystals: 2 from Lanzhou (received) 2 from Hilger (received) 2 from St. Gobain (coming soon) 2 from Scionix (?)  LAAPDs Hamamatsu 5 pieces 2x(10x10) mm 2 (coming soon)  VME Flash ADC Module MataCQ 32 Material already ordered As agreed in previous collaboration meetings, we ordered: 3

Hamamatsu prototypes Material  LAAPD from Hamamatsu  Active Area: 2 x (10 x 10) mm 2 4

Proposal for the prototype DAQ 1 or 2 GHz sampling frequency on each channel 300MHz bandwidth Analog to digital conversion on 12 bits Full dynamic range : V LSB of 250µV 2560 points per channel Integral non linearity : % Differential non linearity : % Sampling jitter < 20ps RMS Trigger datation with a precision of 50ps RMS Four first level trigger modes Two levels of trigger 32-bit VME and GPIB interfaces Peak power consumption below 25W MJ2 – main features Already ordered to: 5