Optimization Studies of Radiation Shielding for PIP-II Project at Fermilab

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 highenergy 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. Top view of the model layout in MARSThe primary jaw of the horizontal and vertical PIP-II collimators can shift ±25.4 mm from its nominal centered location, with a "hard stop" safeguard to prevent contact with the vacuum chamber.Primary jaw (copper) ±25.4 mm Movement of the primary jaw model in MARS -2.54 cm 2.54 cm