The liquid-hydrogen absorber for MICE

Bayliss, V. and Boehm, J. and Bradshaw, T. and Courthold, M. and Harrison, S. and Hills, M. and Hodgson, P. and Ishimoto, S. and Kurup, A. and Lau, W. and Long, K. and Macwaters, C. and Nichols, A. and Summers, D. and Tucker, M. and Warburton, P. and Watson, S. and Whyte, C. (2019) The liquid-hydrogen absorber for MICE. IOP Conference Series: Materials Science and Engineering, 502 (1). 012150. ISSN 1757-899X

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    Abstract

    This paper describes the liquid hydrogen system constructed for The Muon Ionization Cooling Experiment (MICE); MICE was built at the STFC Rutherford Appleton Laboratory to demonstrate the principle of muon beam phase-space reduction via ionization cooling. Muon beam cooling will be required at a future proton-derived neutrino factory or muon collider. Ionization cooling is achieved by passing the beam through an energy-Absorbing material, such as liquid hydrogen, and then re-Accelerating the beam using RF cavities. This paper describes the system creating the 22l of liquid hydrogen within the MICE beamline; the necessary safety engineering, the liquid hydrogen absorber and its associated cryogenic and gas systems are presented, along with its performance.