Development of a Schottky CdTe Medipix3RX hybrid photon counting detector with spatial and energy resolving capabilities

作者：Gimenez E N^*; Astromskas V; Horswell I; Omar D; Spiers J; Tartoni N

来源：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment , 2016, 824: 101-103.

DOI：10.1016/j.nima.2015.10.092

• Photon counting detectors
• Schottky
• CdTe
• Medipix
• X-rays
• Synchrotron applications

A multichip CdTe-Medipix3RX detector system was developed in order to bring the advantages of photon-counting detectors to applications in the hard X-ray range of energies. The detector head consisted of 2 x 2 Medipix3RX ASICs bump-bonded to a 28 mm x 28 mm e(-) collection Schottky contact CdTe sensor. Schottky CdTe sensors undergo performance degrading polarization which increases with temperature, flux and the longer the HV is applied. Keeping the temperature stable and periodically refreshing the high voltage bias supply was used to minimize the polarization and achieve a stable and reproducible detector response. This leads to good quality images and successful results on the energy resolving capabilities of the system.

• 出版日期2016-7-11