Schnuerer, Roland
(2020)
Non-invasive, silicon-based beam monitor for medical accelerators.
PhD thesis, University of Liverpool.
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Abstract
In proton beam therapy knowledge of the detailed beam properties is essential to ensure effective dose delivery to the patient. Clinical settings currently implement interceptive ionisation chambers which require daily calibration and suffer from slow response times. With new and emerging treatment techniques using ultra high dose rates, there is a demand for the development of novel beam monitors, which are fast, non-invasive and calibration-free. This work presents a new non-invasive method for online dose monitoring. It is based on the multi-strip silicon sensor LHCb VELO (VErtex LOcator), developed originally for the LHCb experiment at CERN. The semi-circular detector geometry offers the possibility to correlate the beam intensity through halo measurements without interfering the beam core. Several adaptations needed to be carried out to transfer this technology from the CERN environment to a stand-alone setup. This included the development of a venting and cooling system for safe operation in air. A positioning system was also developed for secure and precise handling of the modules. The VELO detector modules were implemented at the 40 MeV proton beamline at the University of Birmingham, UK and synchronised ... (continues)
| Item Type: | Thesis (PhD) |
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| Divisions: | Faculty of Science and Engineering > School of Physical Sciences |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 26 Nov 2020 16:26 |
| Last Modified: | 02 Nov 2024 14:16 |
| DOI: | 10.17638/03103898 |
| Supervisors: |
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| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3103898 |
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