Title :
Experimental results using a hybrid silicon pixel detector for scintillating fibre readout and X-ray imaging
Author :
Via, C. Da ; Campbell, M. ; Heijne, E.H.M. ; Middelkamp, P. ; Stefanini, G.
Author_Institution :
CERN, Geneva, Switzerland
fDate :
8/1/1995 12:00:00 AM
Abstract :
We report the results obtained with a novel readout system for scintillating fibres and X-ray imaging based on the combination of a silicon pixel detector and one stage of light amplification using a 2nd generation image intensifier. The pixel detector is a hybrid assembly of a high resistivity silicon detector bump-bonded to a CMOS binary readout chip and can be read out at a speed of 15 MHz. Each pixel element measures 75 μm×500 μm. Scintillating fibre ribbons and scintillating crystals are coupled to the detector array using one stage of light amplification provided by a micro-channel plate (MCP) image intensifier with fiberoptic faceplates. We have used the system to image electron tracks in a bundle of scintillating fibre ribbons. Further we have shown how the system can be used for imaging 122 keV X-rays such as those used in nuclear medicine. The system provides the possibility of single photon counting, high spatial resolution and Compton rejection
Keywords :
CMOS integrated circuits; X-ray detection; X-ray imaging; image intensifiers; microchannel plates; photon counting; position sensitive particle detectors; radioisotope imaging; silicon radiation detectors; solid scintillation detectors; 122 keV; 15 MHz; CMOS binary readout chip; Compton rejection; Si; X-ray imaging; bump-bonding; detector array; electron tracks imaging; fiberoptic faceplates; high resistivity Si detector; high spatial resolution; hybrid Si pixel detector; light amplification; microchannel plate; nuclear medicine; scintillating crystals; scintillating fibre readout; scintillating fibre ribbons; second generation image intensifier; single photon counting; Assembly; Conductivity; Face detection; Image generation; Image intensifiers; Pixel; Silicon; X-ray detection; X-ray detectors; X-ray imaging;
Journal_Title :
Nuclear Science, IEEE Transactions on
