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...

The particle flow approach requires calorimeters with ultra-high granularity. The design of the Si/W ECAL has thus been based on this principle. It is composed of 30 layers, each layer having an array of 3 × 3 silicon matrices. These matrices or wafers are divided into 6 × 6 cells with an area of 1 cm. The mechanical structure consists of tungsten plates wrapped in carbon fiber, creating 15 alv...

New polysiloxane oligomers containing phosphorus, 6-(2-(dihydroxy(methyl)silyl)ethyl)dibenzo[c,e][1,2]oxaphosphinine 6-oxide (DOPO-VMDMS), have been synthetized and grafted to the remaining hydroxyl groups of alkyd resins in order obtain hybrid with flame retardant properties. These silicone demonstrated better drying time, gloss chemical resistance than reference without DOPO-VMDMS. Moreover, ...

An experimental report on the construction and operation of a lead-glass calorimeter at the CERN-NA49 experiment is presented.

A preliminary design of the PEP-N electromagnetic calorimeter is given. The spatial, energy and time resolutions achievable using a KLOE type electromagnetic calorimeter are presented. 1 PHYSICS REQUIREMENTS AND PERFORMANCE GOALS Figure 1: Angular (rad.) energy (GeV) photon correlation for ee → 2π2π2π. The main goals of the PEP-N physics programs are : • a measurement of R with a 2 % or better ...

2 Research Plan 2 2.1 Scientific goals of the LHC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2.2 The Swiss contributions to the LHC experiments . . . . . . . . . . . . . . . . . . . . . 2 2.2.1 Swiss contributions to ATLAS construction . . . . . . . . . . . . . . . . . . . . 3 2.2.1.1 Silicon Tracker (SCT) . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.2.1....