The ATLAS detector is being built in CERN at the LHC. It is a general purpose detector that will be used for a variety of experiments, such as searching for the Higgs Boson. The electromagnetic calorimeter is a component of ATLAS responsible for measuring the energy deposited by e, e−, and γ. This paper presents a study of the resolution of the E-M calorimeter using data simulated by GEANT 4. A...

To match these requirements CHARM2 [2] has been built !as a high mass,low 2, high granularity, sampling calorimeter (total mass 692 tons). The calorimeter is made of 420 modules, each module consisting of a 3.7 m 'X 3.7 m, 4.8 cm thick, glass plate and of a plane of 352 plastic limited streamer Fubes with digital readout of the wires and analog readout of pickup strips orthogonal to the wires. ...

This report summarizes the quality requirements to the barium fluoride (BaF 2 ) crystals for constructing a high precision electromagnetic calorimeter at future hadron colliders . The basic property of BaF2 crystals and the design and performance of a BaF2 calorimeter are presented . The emphasis of the discussion is in the radiation resistance of the current production BaF2 crystals. An approa...

After 3 years of extensive R&D the Bogoroditsk Techno-Chemical Plant in Russia is ready to enter a preproduction phase where 6000 Lead Tungstate crystals will be produced for the CMS electromagnetic calorimeter during a period of about 18 months. Although this is a demonstration test for the mass production, these crystals will have to be installed in the calorimeter and have therefore to compl...

Traditional materials are being constantly replaced by synthetic polymers, most of which highly flammable. Epoxy resins versatile and among the important class due to their multiple crosslinking capacity endowed oxirane ring, applications ranging from adhesives aeronautics. This study investigates comparative effect three hardeners (aromatic, cycloaliphatic, aliphatic) addition an oligophosphon...

Fe-based metallic glass has wide industrial application due to its unique mechanical behavior and magnetic properties. In the present work, non-isothermal crystallization kinetics in Fe68Nb6B23Mo3 glassy alloys were investigated by differential scanning calorimeter (DSC). The results indicate that both transformation process display an obvious kinetic effect. activation energy is calculated usi...

A novel technique to estimate the distribution state of carboxyl groups within submicron-sized, carboxylated polymer particles was proposed. For the purpose, carboxyl groups in two kinds of butyl methacrylate-methacrylic acid copolymer emulsion, which were prepared by emulsion copolymerizations with different monomer addition methods, were titrated by isothermal titration calorimetry with an ex...

The CALICE (CAlorimeter for the Linear Collider with Electrons) collaboration [1] plans to examine several technology and geometry options for electromagnetic and hadronic calorimetry at the proposed International Linear Collider. Since in many geometries the total material thickness of the calorimeter is too little to fully contain highly energetic hadronic showers, it is important to gain a g...

An imaging calorimeter has been designed and is being built for the PAMELA satellite-borne experiment. The physics goals of the experiment are the measurement of the flux of antiprotons, positrons and light isotopes in the cosmic radiation. The calorimeter is designed to perform a precise measurement of the total energy deposited, to reconstruct the spatial development of the showers (both in t...

An iron sampling calorimeter with warm-liquid ionization chambers has been tested at the CERN SPS in order to study the signal development and to verify the energy calibration of the hadron calorimeter in the KASCADE-Grande air shower experiment. The absolute energy calibration of the detectors is discussed. Results of the analysis of the lateral and longitudinal shower development in the calor...