Journal article

2D monolithic silicon-diode array detectors in megavoltage photon beams: does the fabrication technology matter? A medical physicist's perspective

N Stansook, G Biasi, K Utitsarn, M Petasecca, P Metcalfe, M Carolan, MLF Lerch, VL Perevertaylo, T Kron, AB Rosenfeld

AUSTRALASIAN PHYSICAL & ENGINEERING SCIENCES IN MEDICINE | SPRINGER | Published : 2019

Abstract

A family of prototype 2D monolithic silicon-diode array detectors (MP512, Duo, Octa) has been proposed by the Centre for Medical Radiation Physics, University of Wollongong (Australia) for relative dosimetry in small megavoltage photon beams. These detectors, which differ in the topology of their 512 sensitive volumes, were originally fabricated on bulk p-type substrates. More recently, they have also been fabricated on epitaxial p-type substrates. In the literature, their performance has been individually characterized for quality assurance (QA) applications. The present study directly assessed and compared that of a MP512-bulk and that of a MP512-epitaxial in terms of radiation hardness, l..

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