Title :
A photon counting pixel chip with energy windowing
Author :
Fischer, P. ; Helmich, A. ; Lindner, M. ; Wermes, N. ; Blanquart, L.
Author_Institution :
Phys. Inst., Bonn Univ., Germany
fDate :
6/1/2000 12:00:00 AM
Abstract :
A method allowing single photon counting with an additional energy information without increasing the radiation dose is presented. On a pixel chip an energy window has been realised by introducing a second discriminator with a separate counter in every pixel. Both discriminators have an independent threshold voltage and can be adjusted individually. Measurements on the noise behavior, threshold variation and threshold settings are presented
Keywords :
X-ray detection; biomedical electronics; diagnostic radiography; discriminators; nuclear electronics; photon counting; silicon radiation detectors; Si; discriminator; energy windowing; independent threshold voltage; noise behavior; photon counting pixel chip; single photon counting; threshold settings; threshold variation; Biomedical imaging; Bones; Electromagnetic wave absorption; Large Hadron Collider; Physics; Pixel; Radiation detectors; Radiography; Silicon; X-ray imaging;
Journal_Title :
Nuclear Science, IEEE Transactions on
