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A new silicon tracker for proton imaging and dosimetry
J T Taylor1, C Waltham2, T Price3
1Department of Physics, University of Liverpool, Oxford Street, Liverpool L69 7ZE, UK.
Nuclear Instruments & Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
|September 27, 2016
Summary
New silicon micro-strip detectors, adapted from high-energy physics, enable precise proton tracking for advanced particle therapy imaging and dose monitoring. This technology enhances proton computed tomography (pCT) for accurate radiotherapy delivery.
Area of Science:
- Medical Physics
- Particle Physics Instrumentation
- Radiotherapy Technology
Background:
- Silicon micro-strip detectors are established tools in particle and nuclear physics.
- Particle therapy offers advantages over traditional X-ray radiotherapy.
- Growing global development of particle therapy centers necessitates advanced instrumentation.
Purpose of the Study:
- To present the characteristics of a novel silicon micro-strip tracker designed for particle therapy applications.
- To enable proton computed tomography (pCT) for enhanced radiotherapy accuracy.
- To develop instrumentation for beam monitoring and dose verification in particle therapy.
Main Methods:
- Utilizing large-area silicon micro-strip sensors based on ATLAS experiment technology.
- Arranging detectors into four units, each with three layers (x-u-v configuration) for fast proton tracking.
- Characterizing detector performance using 90Sr and 60 MeV proton beam tests.
Main Results:
- Detailed design, construction, and assembly of a tracker unit are presented.
- The tracker is capable of tracing ~200 MeV protons for pCT.
- Radiation tests confirm detector functionality for high-fluence environments.
Conclusions:
- The developed silicon micro-strip tracker is suitable for advanced particle therapy applications, including pCT.
- This technology aids in accurate dose delivery and real-time beam monitoring.
- The instrumentation leverages high-energy physics expertise for medical applications.
