Radiation-Hard Quartz Cerenkov Calorimeters - The University of Iowa

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HE Upgrade for SLHCThe Final Fiber Geometry• We used the “chosen” geometry on the prototype.• The signal is read by Hamamatsu R7525 PMTs• The fibers are 1mm diameter Bicron wavelengthshifting fibers. They absorb photons down to 280 nm,emit 435 nm.• The fibers go ~20 cm out of the quartz.THE UNIVERSITY OF IOWAY. Onel, CALOR2006, Chicago36
HE Upgrade for SLHCThe Calorimeter Prototype Design and Simulations• R&D results and initial model shaped the prototype.• The final design:– 20cm x 20cm, 20 layers 70 mm iron, 5 mm quartz– Should be portable for tests at CERN, Fermilab, and Iowa– The Cerenkov light is collected by wavelenght shfting fibers and carried to theHamamatsu R7525 PMT.THE UNIVERSITY OF IOWAY. Onel, CALOR2006, Chicago37
Page 1 and 2: Radiation-Hard Quartz CerenkovCalor
Page 3 and 4: Introduction• The detector is int
Page 7 and 8: Quartz Radiation DamageAttenuationA
Page 9 and 10: CMS DetectorBarrel Hadron (HB) Calo
Page 11 and 12: PPP - IROBox( Light Guides)R6425 PM
Page 13 and 14: PPP - ISpatial uniformity with elec
Page 15 and 16: PPP - IEnergy Response Linearity•
Page 17 and 18: CMS Forward DetectorsTHE UNIVERSITY
Page 19 and 20: HF CalorimeterHAD (143 cm)5mm• To
Page 21 and 22: HF CalorimeterHF in 186 ServicesTHE
Page 23 and 24: HF CalorimeterTest Beam Verificatio
Page 25 and 26: ElectronHF CalorimeterResponse of H
Page 27 and 28: HF CalorimeterResponse Linearity•
Page 29 and 30: CASTOR Calorimeter• Each set of t
Page 31 and 32: CASTOR Calorimeter(5.32 < η < 6.71
Page 33 and 34: HE Upgrade for SLHCCollecting Ceren
Page 35: HE Upgrade for SLHCSurface Uniformi
Page 39 and 40: Cerenkov CompensationPrecision Calo
Page 41 and 42: Backup SlidesTHE UNIVERSITY OF IOWA
Page 43: CMS CoverageTHE UNIVERSITY OF IOWAY

Radiation-Hard Quartz Cerenkov Calorimeters - The University of Iowa

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