Large-area pixellated photon counting X-ray imaging system

Iles, G., Mathieson, K., Murray, P., Passmore, S., Prydderch, M., Seller, P. and Thomas, S. (2001) Large-area pixellated photon counting X-ray imaging system. Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, 458(1-2), pp. 427-430. (doi: 10.1016/S0168-9002(00)00889-5)

Abstract

A large-area pixellated photon counting imaging system, primarily for synchrotron radiation research, is under development. An area of 300 mm×300 mm will be covered by tiling many modules. A module will comprise a 64×448 array of 150 μm×150 μm silicon pixels covering an area of 9.6 nm×67.2 mm. This will be flip chip bonded to 7 ALADIN readout chips, that each contain a 64×64 array of 144 mm×150 μm pixels. Each readout pixel comprises a pre-amplifier, shaper, discriminator, 15-bit counter and 5-bit register that enables threshold adjust, pixel masking and calibrate control. Each pixel is designed to operate at ∼1 MHz providing a count rate capability of ∼109 cm−2 s−1. The system will operate in the energy range from 4 to 25 keV and at a frame rate of up to 1 kHz. The current status of the project is reported, along with the detector guard structure chosen to minimise the dead region around the active volume of the silicon detector.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Mathieson, Dr Keith
• Authors: Iles, G., Mathieson, K., Murray, P., Passmore, S., Prydderch, M., Seller, P., and Thomas, S.
• College/School: College of Science and Engineering > School of Physics and Astronomy
• Journal Name: Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment
• Publisher: Elsevier BV
• ISSN: 0168-9002
• ISSN (Online): 1872-9576
• Published Online: 06 February 2001