Objectif The project aims to develop the front-end electronics chain and the physics software tools for the PHOS electromagnetic calorimeter of the LHC ALICE experiment. In particular, the project will:- Carry out R&D, prototyping and tests of new front-end electronics, designed for avalanche photo-diode (APD) as photo detector, which satisfies the new extended physics requirements:-- An order of magnitude increase in dynamic range, corresponding to measuring energy deposition in the crystals in the range 10MeV to 100GeV. This will allow to fully exploit the PHOS physics potential for measurements of photons, neutral pions and etas up to 100 GeV;-- Possibility of time-of-flight measurements with resolution 2 ns or better. Time measurements, even with a rather modest accuracy of 2 ns, provide the possibility of reducing by one order of magnitude the most important contamination of the photon spectrum by soft antineutrons;-- Generation of PHOS triggers for the ALICE Trigger system. For pp runs it will typically supply L0 minimum bias triggers, for Pb-Pb high pT triggers;-- Possibility of APD bias regulation. The gain of an APD strongly depends on the bias high voltage, so implementation of bias regulation will result in a more stable detector, and is also a prerequisite for correct summing of energy signals for trigger generation;- To perform a series of beam tests with the existing large-scale 256 channel prototype of PHOS (INTAS 99-692 project), and to build a database of photon and hadron showers in PHOS. The most reliable method of estimation of photon and pi0 registration efficiency is the "test photon" method, when test clusters are superimposed onto real events and then reconstructed with the developed reconstruction software. To collect a complete set of clusters for this analysis is a main goal of these beam-tests;- To develop and to tune simulation, reconstruction and analysis software for photon and pi0 reconstruction and identification using MC simulations and experimental results obtained with the 256-channel PHOS prototype;- To perform MC simulations and to estimate the possibility of measurement of Bose-Einstein correlations of direct photons and possibility of jet tagging, high Pt photon/pi0 separation and measurement of isolated photon spectrum. Programme(s) IC-INTAS - International Association for the promotion of cooperation with scientists from the independent states of the former Soviet Union (INTAS), 1993- Thème(s) CERN - CERN Appel à propositions Data not available Régime de financement NoE - Network of Excellence Coordinateur UNIVERSITY OF OSLO Contribution de l’UE Aucune donnée Adresse BLINDERN, 1 OSLO Norvège Voir sur la carte Coût total Aucune donnée Participants (7) Trier par ordre alphabétique Trier par contribution de l’UE Tout développer Tout réduire All-Russian Scientific-Research Institute of the Experimental Physics Russie Contribution de l’UE Aucune donnée Adresse Prospekt Mira 37 607188 Sarov Voir sur la carte Coût total Aucune donnée ECOLE DES MINES DE NANTES France Contribution de l’UE Aucune donnée Adresse ALFRED KASTLER, 4 NANTES Voir sur la carte Coût total Aucune donnée Joint Institute for Nuclear Research Russie Contribution de l’UE Aucune donnée Adresse Joliot-Curie 6 141980 Dubna Voir sur la carte Coût total Aucune donnée Ministry of Atomic Energy of the Russian Federation State Reserch Center of the Russian Federation - Institute for High Energy Physics Russie Contribution de l’UE Aucune donnée Adresse Pobedy steet 1 142281 Protvino Voir sur la carte Coût total Aucune donnée RRC Kurchatov Institute Russie Contribution de l’UE Aucune donnée Adresse Kurchatov sq., 1 123182 Moscow Voir sur la carte Coût total Aucune donnée SOLTAN INSTITUTE FOR NUCLEAR STUDIES Pologne Contribution de l’UE Aucune donnée Adresse UL. HOZA, 69 WARSAW Voir sur la carte Coût total Aucune donnée UNIVERSITY OF BERGEN Norvège Contribution de l’UE Aucune donnée Adresse ALLEGATEN, 55 BERGEN Voir sur la carte Coût total Aucune donnée