Title :
A High-Rate Energy-Resolving Photon-Counting ASIC for Spectral Computed Tomography
Author :
Gustavsson, Mikael ; Amin, Farooq Ul ; Björklid, Anders ; Ehliar, Andreas ; Xu, Cheng ; Svensson, Christer
Author_Institution :
SP Devices AB, Linkoping, Sweden
Abstract :
We describe a high-rate energy-resolving photon-counting ASIC aimed for spectral computed tomography. The chip has 160 channels and 8 energy bins per channel. It demonstrates a noise level of ENC =214 electrons at 5 pF input load at a power consumption of <; 5 mW/channel. Maximum count rate is 17 Mcps at a peak time of 40 ns, made possible through a new filter reset scheme, and maximum read-out frame rate is 37 kframe/s.
Keywords :
X-ray apparatus; X-ray spectroscopy; application specific integrated circuits; computerised tomography; nuclear electronics; photon counting; X-ray spectrum; energy resolving ASIC; high rate ASIC; photon counting ASIC; spectral computed tomography; Application specific integrated circuits; Calibration; Clocks; Detectors; Noise; Noise level; Photonics; CMOS; photon counting; spectral computed tomography; x-ray detection;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.2011.2169811
