Objetivo The Project proposes the design and construction of the prototype vacuum phototriode photodetectors for the CMS Forward Electromagnetic Detector. This detector must operate in the pseudorapidity range from 2.6 to 3.0 where radiation levels (both gamma and neutron) are extremely high. Operation so close to the beam-pipe area requires very high radiation resistance for all the main components of the calorimeter: electronic readout, scintillators and photodetectors. At present one can anticipate suitable radiation hard PbWO4 crystals being developed for this endcap. The goal of this project is to construct a photodetector with good quantum efficiency (>16% over the main scintillation spectrum of lead tungstate), moderate gain in a 4T axial field, and capable of operating up to gamma doses of 50kGy and neutron fluences of 7´1014 neutron/cm2.Such detectors are proposed to be 25 mm diameter fine-mesh vacuum phototriodes with extremely radiation hard faceplates and photocathodes for a stable long-term performance under the LHC operating conditions. The production of radiation hard VPTs for the prototype of FED 5´5 super modules (in total 4 units, thus 100 prototype photodetectors) will form the basis for the construction of whole CMS Forward Electromagnetic Detector. All the team members have considerable experience of producing or evaluating such photodetectors, and in particular we have the expertise to develop and evaluate radiation resistant devices. The proposed programme opens up new ways for using vacuum photodetectors in physics experiments in areas where current silicon technology (e.g. avalanche photodiodes) will not survive Programa(s) IC-INTAS - International Association for the promotion of cooperation with scientists from the independent states of the former Soviet Union (INTAS), 1993- Tema(s) 1A - Nuclear Physics, Astronomy, Astrophysics CERN - CERN Convocatoria de propuestas Data not available Régimen de financiación Data not available Coordinador Brunel University Aportación de la UE Sin datos Dirección UB8 3PH Uxbridge, London Reino Unido Ver en el mapa Coste total Sin datos Participantes (6) Ordenar alfabéticamente Ordenar por aportación de la UE Ampliar todo Contraer todo CERN Suiza Aportación de la UE Sin datos Dirección Route de Meyrin 1211 Geneva Ver en el mapa Coste total Sin datos Central Research Institute Electron Rusia Aportación de la UE Sin datos Dirección M. Tores ave, 68 194233 St. Petersburg Ver en el mapa Coste total Sin datos Institute of High Energy Physics Rusia Aportación de la UE Sin datos Dirección Lenin Street 1 142284 Protvino, Moscow region Ver en el mapa Coste total Sin datos OAD MELZ Rusia Aportación de la UE Sin datos Dirección Electrozvodskaya Street 23 105023 Moscow Ver en el mapa Coste total Sin datos Russian Academy of Sciencies Rusia Aportación de la UE Sin datos Dirección Orlova Roscha 188350 Gatchina, St. Petersburg region Ver en el mapa Coste total Sin datos University of Bristol Reino Unido Aportación de la UE Sin datos Dirección Royal Fort, Tyndall Avenue BS8 1TL Bristol Ver en el mapa Coste total Sin datos
