Calibration results obtained with Liulin-4 type dosimeters

Area of Science:

• Medical Physics
• Radiation Detection and Measurement
• Particle Accelerators

Background:

• Accurate radiation monitoring is crucial for safety in various environments, including accelerator facilities and air travel.
• Existing dosimetry systems require validation across diverse radiation fields and energies.

Purpose of the Study:

• To calibrate and validate the Mobile Radiation Exposure Control System (Liulin-4 type) for accurate dose and flux measurements.
• To assess the system's performance in diverse radiation environments, including proton beams, heavy ions, and cosmic radiation.
• To compare experimental angular sensitivity data with Monte Carlo predictions.

Main Methods:

• Calibration of 256-channel dosimeter-spectrometers using proton beams up to 70 MeV at cyclotron facilities.
• Testing with 500 MeV/u Fe ions at the HIMAC accelerator and high-energy reference fields at CERN.
• Measurement of angular sensitivities and comparison with Monte Carlo simulations.
• Recording radiation exposure during airplane flights and comparison with the CARI-6 model.

Main Results:

• Successful calibration of the Liulin-4 system across multiple accelerator facilities.
• Demonstrated agreement between measured and predicted angular sensitivities.
• Validation of the system's performance in high-energy heavy ion fields.
• Comparison of flight data with CARI-6 model predictions.

Conclusions:

• The Liulin-4 system is a reliable tool for simultaneous dose and flux monitoring.
• The system is suitable for personnel dosimetry and environmental radiation assessment.
• Experimental data supports the accuracy and predictive capabilities of the system across a range of radiation types and energies.