Abstract
A pixellated CdTe detector system comprising 2 × 2 detector modules has been developed for high energy spectroscopic X-ray imaging applications and has an active area of 16 cm2. The detector modules are made from the HEXITEC 80 × 80 ASIC and 1 mm thick CdTe with Al-Schottky contacts. The CdTe has 250 μm pitch pixels with an outer guard ring on the same pitch. The single HEXITEC 80 × 80 detectors have an av. energy resoln. (FWHM) of 800 eV at 59.9 keV. Limitations in the multiple module DAQ system mean that the energy resoln. of the pixels in the 2 × 2 detector array is 2.0 keV at 59.9 keV. The spacing between the tiled detector modules is 150 μm which results in an inactive area equiv. to 3 pixels, including the guard ring on the edge of the detectors. The modular detector configuration demonstrates the potential to create large area detector arrays in the future. [on SciFinder(R)]
Original language | English |
---|---|
Pages (from-to) | 1197-1200 |
Number of pages | 4 |
Journal | IEEE Transactions on Nuclear Science |
Volume | 60 |
Issue number | 2, Pt. 1 |
DOIs | |
Publication status | Published - 2013 |
Keywords
- X-ray detectors (multiple module pixellated CdTe spectroscopic X-ray detector)
- Optical imaging devices (x-ray converters
- multiple module pixellated CdTe spectroscopic X-ray detector)
- cadmium telluride x ray detector