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Work at IPN Orsay R&D on Calorimeters Jean Peyré Sept 2007

Work at IPN Orsay R&D on Calorimeters Jean Peyré Sept 2007. 1:Temperature dependance. Michaël JOSSELIN. 1:Temperature dependance. Michaël JOSSELIN. CONCLUSION Variation of Xtal+detector response at 20°C (according to NIm papers) PMT + CsI(Tl) → +0.2 to 0.4%/°K

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Work at IPN Orsay R&D on Calorimeters Jean Peyré Sept 2007

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  1. Work at IPN Orsay R&D on Calorimeters Jean PeyréSept 2007 IPNO-RDD-Jean Peyré

  2. 1:Temperature dependance Michaël JOSSELIN IPNO-RDD-Jean Peyré

  3. 1:Temperature dependance Michaël JOSSELIN CONCLUSION Variation of Xtal+detector response at 20°C (according to NIm papers) • PMT + CsI(Tl) → +0.2 to 0.4%/°K • APD + CsI(Tl) → +2.3 to 3.8 %/°K IPNO-RDD-Jean Peyré

  4. 2: R&D Status at IPNO Prototypes for Calorimeter Scionix has promised CsI(Tl) Crystals for the end of september DualSquare PMTs (1 per 2 crystals) received from Photonis (1 PMT 9 stages and 1 PMT 11 stages) IPNO-RDD-Jean Peyré

  5. 3: magnetic field R3B Discussion with J.E. Ducret from CEA Saclay Magnetic field along Z axis of Magnet IPNO-RDD-Jean Peyré

  6. R3B Calorimeter Target x 2.2T Magnet Beam axis 14° z 1450mm (0,0,0) 3: magnetic field R3B Discussion with J.E. Ducret from CEA Saclay Magnetic field along Z axis of Magnet 218 Gauss at 900mm from point (0,0,0) Conclusion: if use of PMT, need of shilding (to be studied) IPNO-RDD-Jean Peyré

  7. Cd 4:Non-Homogenity measurements protocol Proposition • Use of Charge PreAmplifier + shaper of peaking time of 3 μs • Feedback Capacitor Cf adapted to the gain of photodetector • Rf*CF >> shaping time • Rf >> 1 MΩ to minimize noise • PreAmplifier Rise Time T=Cd/wc*Cf (be careful for LaBr3+APD) • Measurements must be done in temperature controled room IPNO-RDD-Jean Peyré

  8. 4:Non-Homogenity measurements protocol « MESURES D’AMPLITUDES R. HERMEL (LAPP) Du détecteur à la mesure Roscoff juin 2003 » IPNO-RDD-Jean Peyré

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