A next-generation p-type epitaxial single silicon strip detector, EPI37, has been developed by the Centre for Medical and Radiation Physics for dosimetry and quality assurance in synchrotron Microbeam Radiation Therapy. The sensitive volume of the dosimeter, as defined by a thin strip junction and surrounding guard ring, has dimensions of 5 × 37 × 200 µm3. Charge collection characteristics of the device were assessed using ion beam induced charge microscopy, to characterise the actual sensitive volume size and assess the expected operational behaviour. To test the suitability of the device for use in synchrotron Microbeam Radiation Therapy, the EPI37 was used to measure pertinent characteristics of a synchrotron microbeam radiation treatment field, such as the peak-to-valley dose ratio and the full-width half-maximum. The results were compared to those using the commercially available PTW microDiamond. The results demonstrate the feasibility of the EPI37 for use in microbeam radiation therapy dosimetry.
- Open Access
- Article
Characterising Next Generation Epitaxial Silicon Detectors for Microbeam Radiation Dosimetry
- Andrew Dipuglia 1,
- Jeremy A. Davis 1, *,
- Jason Paino 1,
- Matthew J. Cameron 1,
- Marco Petasecca 1,
- Zeljko Pastuovic 2,
- Vladimir Perevertaylo 3,
- Anatoly B. Rosenfeld 1,
- Michael L.F. Lerch 1
Author Information
Received: 11 Jun 2025 | Revised: 04 Aug 2025 | Accepted: 08 Sep 2025 | Published: 03 Dec 2025
Abstract
Keywords
microbeam radiation therapy | dosimetry | quality assurance | characterisation | single silicon strip detector
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