TUPB042

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URL	https://doi.org/10.18429/JACoW-IPAC2025-TUPB042
Title	Optimising focusing parameters of very high energy electron beams for radiotherapy using Monte Carlo simulation
Authors	J. Valerian, M. Volpi, P. Pushkarna, R. Rassool The University of Melbourne P. Giansiracusa Australian Synchrotron, The University of Melbourne S. Sheehy Australian Nuclear Science and Technology Organisation, The University of Melbourne Y. Tan Australian Synchrotron
Abstract	Very high energy electron (VHEE) beams, with energies of 100 MeV and above, offer favourable properties for radiotherapy, such as deep penetration depth and reduced sensitivity to tissue heterogeneity. Numerous simulation and experimental studies have investigated these properties for clinical application. In this study, we use Monte Carlo simulation using TOPAS to obtain the depth-dose profiles of VHEE beams with varying energy and focusing parameters. An empirical model is fitted to the central axis dose, yielding parameters that characterise the depth-dose profile. A linear interpolator then maps these fitting parameters to the focusing parameters, allowing us to identify the optimal focusing parameters. The results presented here are independent of the beamline and can therefore guide the design of a final focusing systems for VHEE beams.
Paper	download: TUPB042.pdf
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Conference	16th International Particle Accelerator Conference
Series
Location	Taipei, Taiwan
Date	01-06 Jun 2025
Publisher	JACoW Publishing, Geneva, Switzerland
Editorial Board	* Ming-Chyuan Lin - National Synchrotron Radiation Research Center * Yoichi Sato - KEK * Jui-Che Huang - National Synchrotron Radiation Research Center * David Button - Australian Nuclear Science and Technology Organisation * Ping-Shun Chuang - National Synchrotron Radiation Research Center
Online ISBN	978-3-95450-248-6
Online ISSN	2673-5490
Received	27 May 2025
Revised	30 May 2025
Accepted	31 May 2025
Issued	05 November 2025
DOI	10.18429/JACoW-IPAC2025-TUPB042
Pages	1063-1066
Copyright	Published by JACoW Publishing under the terms of the Creative Commons Attribution 4.0 license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI.