Journal
JOURNAL OF INSTRUMENTATION
Volume 17, Issue 7, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/1748-0221/17/07/C07007
Keywords
Beam-line instrumentation (beam position and profile monitors, beam-intensity monitors, bunch length monitors); Instrumentation for particle-beam therapy
Categories
Funding
- Proton Sound Detector project - Italian Institute for Nuclear Physics (INFN)
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This paper presents a mixed signal detector, ProSDs, capable of sensing and processing ionacoustic signals at high pulse rates, which shows promising potential for experimental monitoring of high pulse rate hadron therapy treatments.
Proton Sound Detectors (ProSDs) sense (at low latency, <1ms) the thermoacoustic signal generated by the fast energy deposition at the Bragg peak of a proton beam penetrating an energy absorber. ProSDs are especially promising for experimental monitoring of high pulse rate (FLASH) hadron therapy treatments working in-sync with the beam. This paper presents a mixed signal detector, capable of sensing and processing high rate (1k beam shots/sec) ionacoustic signals with low latency (< 1ms). The system was validated by measuring the dose deposition of a 20MeV proton beam in water, achieving 3.43% precision (+/- 2.75 Gy(RMS)) after 50 ms acquisition (77.56 Gy total dose deposition).
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