Optimization studies of radiation shielding for PIP-II project at Fermilab

29 May 2024, 18:14
6m
Auditorium B. Touschek (INFN-LNF)

Auditorium B. Touschek

INFN-LNF

Poster (preferred) Poster Session

Speaker

Alajos Makovec (Fermi National Accelerator Laboratory)

Description

The Proton Improvement Plan-II (PIP-II) at Fermilab represents a significant advancement in the quest to answer some of the most profound questions about our universe using the world's most intense high-energy neutrino beam. The project requires the construction of a new addition to the Fermilab accelerator complex – an 800-MeV high-intensity superconducting linear accelerator. Ensuring the safety and regulatory compliance of this ambitious project is paramount, necessitating thorough dose rate assessments under both normal operational and accidental scenarios to align with the Fermilab Radiological Control Manual (FRCM) standards.
Our approach included a comprehensive update of the geometry model to incorporate new magnet and collimator designs, essential for reflecting the current state of PIP-II infrastructure. The implementation of high-resolution detector planes, despite their computational demands, enabled us to gather detailed radiation field data crucial for optimizing shielding configurations. To overcome the significant computational demands, we developed a branching code that drastically reduced simulation runtimes while maintaining statistical integrity. This was achieved through geometry splitting and the application of Russian Roulette techniques, tailored to prioritize regions of interest based on predefined importances and weight limits.

Scientific Topic 2 Code status, development and model converters
Scientific Topic 4 Shielding and dosimetry

Primary author

Alajos Makovec (Fermi National Accelerator Laboratory)

Co-authors

Dali Georgobiani (Fermi National Accelerator Laboratory) Igor Rakhno (Fermi National Accelerator Laboratory) Igor Tropin (Fermilab)

Presentation materials