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Optimization of beam dump shielding for K-130 cyclotron at VECC
S Chatterjee1, K Banerjee2, Deepak Pandit3
1HS&E Group, Bhabha Atomic Research Centre, Kolkata 700064, India; Homi Bhabha National Institute, Mumbai 400085, India.
Summary
A new beam dump shield was designed using FLUKA simulations for low background neutron and gamma ray measurements at VECC. Experimental validation confirmed the simulation
Area of Science:
- Nuclear Physics
- Radiation Shielding Design
Background:
- Low background measurements are crucial for sensitive nuclear physics experiments.
- The K130 cyclotron at Variable Energy Cyclotron Centre (VECC) requires efficient beam dump shielding.
- Existing shielding may not meet the stringent requirements for neutron and gamma ray detection.
Purpose of the Study:
- To design a compact and efficient beam dump shield for low background measurements.
- To validate simulation results with experimental data.
- To assess the activation of shielding components.
Main Methods:
- Monte Carlo simulation using the FLUKA code.
- Design considerations included iron, lead, and high-density polyethylene (HDPE).
- In-beam experiments were conducted for validation.
Main Results:
- A compact and efficient beam dump shield design was achieved.
- FLUKA simulation results showed fair agreement with experimental neutron and gamma-ray energy spectra.
- Component activation levels were evaluated.
Conclusions:
- The designed beam dump shield is suitable for facilitating low background measurements.
- FLUKA simulations provide a reliable method for designing such shielding.
- Understanding component activation is important for operational safety and maintenance.
