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Testing the properties of beam-dose monitors for VHEE-FLASH radiation therapy

Abstract:
Very High Energy Electrons (VHEE) of 50 - 250 MeV are an attractive choice for FLASH radiation therapy (RT). Before VHEE-FLASH RT can be considered for clinical use, a reliable dosimetric and beam monitoring system needs to be developed, able to measure the dose delivered to the patient in real-time and cut off the beam in the event of a machine fault to prevent overdosing the patient. Ionisation chambers are the standard monitors in conventional RT; however, their response saturates at the high dose rates required for FLASH. Therefore, a new dosimetry method is needed that can provide reliable measurements of the delivered dose in these conditions. Experiments using 200 MeV electrons were done at the CLEAR facility at CERN to investigate the properties of detectors such as diamond beam loss detectors, GEM foil detectors, and Timepix3 ASIC chips. From the tests, the GEM foil proved to be the most promising.
Publication status:
Published
Peer review status:
Peer reviewed

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Files:
Publisher copy:
10.18429/JACoW-IPAC2022-THPOMS029

Authors

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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Particle Physics
Role:
Author
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Publisher:
JACoW Publishing
Journal:
Proceedings of the 13th International Particle Accelerator Conference More from this journal
Pages:
3018-3021
Publication date:
2022-06-16
Acceptance date:
2022-06-15
Event title:
IPAC 2022
Event location:
Bangkok, Thailand
Event start date:
2022-06-12
Event end date:
2022-06-17
DOI:
EISSN:
2673-5490
EISBN:
978-3-95450-227-1

Language:
English
Keywords:
Pubs id:
1273611
Local pid:
pubs:1273611
Deposit date:
2022-08-11

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