Radiological Environmental Protection for LCLS-II High Power Operation

Abstract

Abstract. The LCLS-II superconducting electron accelerator at SLAC plans to operate at up to 4 GeV and 240 kW average power, which would create higher radiological impacts particularly near the beam loss points such as beam dumps and halo collimators. The main hazards to the public and environment include direct or skyshine radiation, effluent of radioactive air such as 13 and its waste water discharge; explosion from H2 build-up in surge tank and release of radionuclides] associated with the high power beam dumps are also presented.

Radiation containment at a 1 MW high energy electron accelerator: Status of LCLS-II radiation physics design

“…Other related aspects such as activation of surrounding air and of the collimator cooling water are described in [10]. Besides normal beam-losses, beam can be accidentally steered out of the beam-stay clear, thereby hitting collimator jaws, magnets and other components.…”

“…This will be achieved by lifting and rolling the dump-lines. More details about this can be found in [10].…”