The light produced in each of the 60 thousand PbWO4 (PWO) crystals of the CMS barrel electromagnetic calorimeter will be readout by Avalanche Photodiodes (APD). The ratio detected to emitted photons also depends on the PWO//APD gluing quality that must be checked before the crystal mounting inside the calorimeter. In this paper two different tools are proposed: one for the visual inspection of ...

The calorimetric and fluorescence properties of Bismuth Germanate are discussed and compared to those of NaI(TI1). Results on the energy resolution of BGO are presented for energies up to 50 MeV; the energy and position resolution are studied by Montecarlos at higher energies. The performance of a 4x BGO e.m. calorimeter is compared to that of NaI and is specified for a compact fieldless calori...

The 13 500 channels of the NA48 liquid-krypton electromagnetic calorimeter readout electronics were put into operation in 1997. The digitizer electronics employs a new gain switching technique that expands the dynamic range of a standard 10-bit ADC to 14 bits at 40MHz sampling rate employing a custom-developed integrated circuit (KRYPTON). The KRYPTON has been fabricated in 1.2lm BiCMOS technol...

A dual calorimeter is described which can be used to study electrolytic processes. Experience with this instrument has revealed several deficiencies inherent in the isoperibolic calorimeter design that apply to all calorimeters of this type when used to study the cold fusion effect. I. BACKGROUND A calorimeter has been designed to measure heat energy produced in a Pons-Fleischmann type electrol...