Beam Matter Interaction Physics (BMP)

Core competencies:

Physics of beam and particle shower interactions with matter, radiation transport simulation, accelerator radiation environments, radiation effects on electronics and materials, and physics specifications for beam-intercepting systems.

Core responsibilities:

• Develop, maintain and support the FLUKA Monte Carlo code, Flair and auxiliary accelerator modelling tools, and coordinate the FLUKA.CERN collaboration.
• Perform simulations, measurements and analyses for targetry, collimation, beam disposal, crystal-based beam manipulation, energy deposition in all accelerator components, machine protection, shielding, radiation levels, experiment backgrounds and machine-detector interfaces.
• Support accelerator operation through beam-loss analysis, radiation monitoring, dosimetry and interpretation of radiation effects.
• Provide transversal physics input to functional specifications and to the design and validation of beam-intercepting devices and target systems.
• Coordinate Group contributions to Radiation to Electronics and Radiation to Materials activities, including radiation hardness assurance and irradiation testing.

Projects and Assigned Responsibilities:

Project / programme	Assigned responsibility
FLUKA and Flair	Lead development, maintenance, dissemination, training and user support; coordinate the FLUKA.CERN collaboration.
Accelerator studies: HL-LHC, LHC, injectors, FCC and HI-ECN3	Deliver beam-matter interaction, shielding, radiation-level,  collimation, beam disposal, crystal-based beam manipulation, machine-protection, targetry, energy deposition, background and machine-detector-interface studies.
DECRYCE	Coordinate development, manufacture and validation of crystal assemblies for collimation and beam extraction, including beam tests; define physics requirements with BDE engineering support.
R2E and R2M	Lead radiation hardness assurance input, testing methodologies and guidelines, radiation monitoring, dosimetry, radiation-related event analysis, simulations and qualification testing with ATS and RCS stakeholders and contribute to international radiation effects collaborations.
HEARTS@CERN	Lead high-energy heavy-ion irradiation activities, including operation, irradiation service and user management, improvements, upgrades and applied radiation-effects research.
RADNEXT2030	Coordinate the EU project and the related European irradiation facility network.
Run4 readiness for operation	Act as operational liaison for Group hardware with Operations, committees and Group technical experts.