Si and CdTe pixel detector developments at SPring-8

✍ Scribed by H. Toyokawa; Y. Furukawa; T. Hirono; H. Ikeda; K. Kajiwara; M. Kawase; T. Ohata; G. Sato; M. Sato; T. Takahashi; H. Tanida; T. Uruga; S. Watanabe

• Publisher: Elsevier Science
• Year: 2011
• Tongue: English
• Weight: 281 KB
• Volume: 636
• Category: Article
• ISSN: 0168-9002
• DOI: 10.1016/j.nima.2010.04.113

✦ Synopsis

Single X-ray photon counting pixel detectors have become the most advanced detector technology in synchrotron radiation experiments recently. In particular, the PILATUS detector based on a silicon sensor has reached a very mature state and represents the world's largest detector in this field. This paper first reports on threshold energy calibrations and the capability of applying an energy-resolved X-ray imaging with PILATUS. Second the design of a cadmium telluride (CdTe) pixel detector is described. A high density and high-atomic number sensor material is required in high energy X-ray applications available at SPring-8. For this purpose we are developing a CdTe pixel detector with the SP8-01 readout ASIC covering a wide dynamic range between 10 and 100 keV and containing lower and upper discriminators.