Large-area pixellated photon counting X-ray imaging system

Iles, G and Mathieson, K and Murray, P and Passmore, S and Prydderch, M and 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. ISSN 0168-9002 (https://doi.org/10.1016/S0168-9002(00)00889-5)

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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 lm]150 lm silicon pixels covering an area of 9.6 nm]67.2 mm. This will be #ip chip bonded to 7 ALADIN readout chips, that each contain a 64]64 array of 144 mm]150 lm pixels. Each readout pixel comprises a pre-ampli"er, 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 detectors.

ORCID iDs

Iles, G, Mathieson, K ORCID logoORCID: https://orcid.org/0000-0002-9517-8076, Murray, P ORCID logoORCID: https://orcid.org/0000-0002-6980-9276, Passmore, S, Prydderch, M, Seller, P and Thomas, S;
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