Development of Lithium-Drifted Silicon Detectors Using an Automatic Lithium-Ion Drift Apparatus

Using a computer-controlled drift apparatus, we have developed lithium-ion drift techniques to produce large-size silicon detectors with a high success rate. Based on the improved techniques, we have made detectors with a 115×25×2 mm 3 sensitive volume. The variation of the detector sensitivity has been shown to be homogeneous over the measurement area using 1150 nm infrared light.