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The Compact Muon Solenoid hadronic barrel (CMS HB) calorimeter consists of 17 layers of scintillator in a brass absorber. Each scintillator consists of 16 tiles comprising one layer of the corresponding towers in pseudo-rapidity. The light from each tile is routed into a single 0.96 mm wavelength shifting fiber. In the current design, the 17 fibers from the full tower depth are directed into one pixel...
An improved calibration technique based on a radio-frequency-quadrupole (RFQ) accelerator is presented. A high-intensity flux of 17.6MeV photons, produced by radiative capture of 1.85MeV protons from the RFQ in a lithium target, is used to calibrate in situ 11000 crystals of the L3 BGO calorimeter. We present results obtained for the calibration of 1997–1999 L3 data samples. For the first time a calibration...
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