Timepix: Influence of temperature and vacuum on equalisation of x-ray detector and its verification

Abstract

© COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only. The thermal dependence of the semiconductor detector is one of the critical properties. This manuscript describes changes in the threshold scans, equalization and its verification for the particle counting pixel detector Timepix. The Timepix detector family has great potential for use not only in space, i.e. for small satellite (CubeSat) missions, but also in many other areas like medicine, material testing or particle colliders (i.e. Large Hadron Collider). In this case, several experiments were performed with the Timepix detector under the vacuum conditions as well as ambient conditions with the thermal stabilization at several temperatures in a range from-15oC to +80oC. This paper describes the early experimental results of the chip temperature dependence. The detector equalization and validity of the original equalization dependently on different temperatures is examined. The changes in the detector could cause the errors and shifts of the detection limit for low-energies.