SENSOR DEVELOPMENT FOR THE BEAMCAL AT THE ILC
Pages 120-125
A. Rosca
Abstract
Sensors used for calorimeters near the beam pipe at an ILC detector, e.g. the BeamCal must be very radiation hard due to the high level radiation exposure of this calorimeter. Polycrystalline diamonds, gallium arsenide (GaAs), radiation hard silicon and small samples of single crystal diamond have been investigated. Results of the charge collection efficiency measurements as well as of the measurements of the current and capacitance of the samples as a function of the bias voltage are summarized.