Develop a high energy proton beam position monitor using linear contact image sensor

Area of Science:

• Medical Physics
• Particle Accelerator Technology
• Radiation Detection

Background:

• Accurate beam position monitoring is critical for precision in particle therapy.
• Existing methods may have limitations in real-time feedback or spatial resolution.
• Hadron therapy requires robust quality assurance tools for patient safety and treatment efficacy.

Purpose of the Study:

• To develop and evaluate a compact, high-precision beam-position monitor.
• To assess the feasibility of using a contact image sensor with a scintillator for real-time beam monitoring.
• To explore the potential applications in hadron therapy, including quality assurance.

Main Methods:

• Construction of a compact beam-position monitor integrating a linear contact image sensor with a plastic scintillator.
• Testing the monitor using a 230 MeV proton beam.
• Real-time data acquisition and analysis of beam position.

Main Results:

• The developed monitor achieved real-time beam position determination.
• A precision of up to 0.03 mm in beam position measurement was demonstrated.
• The system is compact and free from image distortion, not requiring a long focal length.

Conclusions:

• The compact beam-position monitor offers high precision and real-time capabilities suitable for particle therapy.
• This technology can be integrated into medical particle accelerators for feedback control and daily quality assurance.
• The device shows significant potential for enhancing safety and accuracy in hadron therapy.