SOI based High Energy Particle Imaging with Continuous Time Integration Type Variable Gain Pixel

Abstract

High energy particle imaging requires a detector with wide bandpass spectral response and high hit position pixel readout time. This paper presents the event driven wide dynamic range high energy particle detector for astronomical application. Silicon on insulator (SOI) based fully depleted pixel detector with high charge collection efficiency and high conversion gain has a pixel circuit with in-pixel event detection circuit and variable gain selection logic. Event detection circuit detects the incoming of the high energy particle in the detector. Strength of the detected signal is then compared within the circuit with minimum threshold energy for the amplification. In-pixel gain for an incoming energy is applied for low noise and wide dynamic range X-ray imaging.