Radiation safety design for the J-PARC Project

Area of Science:

• Nuclear Physics and Engineering
• Particle Accelerator Technology
• Radiation Safety

Background:

• The Japan Proton Accelerator Research Complex (J-PARC) project aims to advance basic science and nuclear technology.
• J-PARC is constructing a high-energy proton accelerator complex with world-leading instantaneous intensity.
• Effective radiation shielding is critical for the safe operation of such a facility.

Purpose of the Study:

• To review the radiation safety design studies for the J-PARC facility.
• To present the current status of shielding design methodologies employed at J-PARC.
• To inform future radiation safety protocols for high-intensity accelerators.

Main Methods:

• Application of simplified design methods for initial shielding assessments.
• Implementation of detailed design methods for precise radiation shielding calculations.
• Integration of both approaches to ensure a comprehensive shielding strategy.

Main Results:

• The shielding design for J-PARC incorporates a dual approach of simplified and detailed methods.
• These methods are being refined to manage radiation from the high-intensity proton beam.
• The review consolidates the progress and findings of the radiation safety design studies.

Conclusions:

• A robust radiation safety design is being established for J-PARC.
• The combined use of simplified and detailed methods provides a reasonable shielding design.
• Ongoing studies ensure the safe advancement of nuclear technology at J-PARC.