title: Bremsstrahlung Dose Yield for High-Intensity Short-Pulse Laser-Solid Experiments.
abstract: A bremsstrahlung source term has been developed by the Radiation Protection (RP) group at SLAC National Accelerator Laboratory for high-intensity short-pulse laser-solid experiments between 1017 and 1022 W cm-2. This source term couples the particle-in-cell plasma code EPOCH and the radiation transport code FLUKA to estimate the bremsstrahlung dose yield from laser-solid interactions. EPOCH characterizes the energy distribution, angular distribution, and laser-to-electron conversion efficiency of the hot electrons from laser-solid interactions, and FLUKA utilizes this hot electron source term to calculate a bremsstrahlung dose yield (mSv per J of laser energy on target). The goal of this paper is to provide RP guidelines and hazard analysis for high-intensity laser facilities. A comparison of the calculated bremsstrahlung dose yields to radiation measurement data is also made.
authors.affiliation: SLAC National Accelerator Laboratory, Menlo Park, CA, USA.|Georgia Institute of Technology, Atlanta, GA, USA.
authors.forename: Taiee
authors.initials: T
authors.lastname: Liang
authors.affiliation: SLAC National Accelerator Laboratory, Menlo Park, CA, USA.
authors.forename: Johannes M
authors.initials: JM
authors.lastname: Bauer
authors.affiliation: SLAC National Accelerator Laboratory, Menlo Park, CA, USA.
authors.forename: James C
authors.initials: JC
authors.lastname: Liu
authors.affiliation: SLAC National Accelerator Laboratory, Menlo Park, CA, USA.
authors.forename: Sayed H
authors.initials: SH
authors.lastname: Rokni
mesh_terms: D004583:Electrons; D007834:Lasers; D010315:Particle Accelerators; D017785:Photons; D011834:Radiation Monitoring; D011879:Radiotherapy Dosage