Performance of SiPMT array readout for fast time-of-flight detectors

Scintillator based time-of-flight detectors may use conventional photomultipliers for the readout. Problems arise in presence of stray magnetic fields. SiPMT arrays are insensitive to magnetic fields and are a suitable option to replace photomultipliers. Timing performances for several SiPMT arrays have been studied and results are presented

Systematic Study of a SiPMT array readout for fast time-of-flight detectors

Time-of-flight detectors, based on scintillation counters, may use conventional photomultipliers for the readout. Problems arise in presence of external magnetic fields. SiPMT arrays are in- sensitive to magnetic fields and may be a suitable option to replace photomultipliers. Timing performances for several types of SiPMT arrays have been studied and results are presented

New developments on front-end electronics for the CMS resistive plate chambers

A novel version of the front-end electronics for the CMS resistive plate chambers is described. It is based on a new front-end ASIC, designed and manufactured in the 0.8 mu m BiCMOS technology by Austria Mikro Syteme. The main improvements with respect to the previous version (Loddo et al., Proceedings of the Fourth International Workshop on Resistive Plate Chambers and related Detectors, Napoli, 15-16 October 1997) concern the input impedance, the threshold uniformity and the timing performance. Simulation and test results will be shown, together with a brief description of the automatic test system for both front-end chip and board. (5 refs)

Calibration of BC501A liquid scintillator cells with monochromatic neutron beams

The recoil proton energy response has been measured by exposing cylindrical cells, filled with BC501A BICRON liquid scintillator, to mono-energetic neutron reference fields. We determine the required calibration parameters and report the detailed procedures for the experimental data handling. A dedicated Monte Carlo simulation of the detector response and efficiency has been performed. It showed good agreement with the measured quantities. The results from this calibration are necessary for a detailed study of the neutron spectrum at the underground Gran Sasso Laboratory, with a neutron detector made of 32 liquid scintillator cells, like those used during the calibration