Abstract
The Advanced Hydrotest Facility (AHF), a proton radiography and tomography facility, is under study at the Los Alamos National Laboratory (LANL). 800-MeV protons from the existing LANSCE linear accelerator are to be accelerated to 50-GeV and the resulting beam split twelve fold during transport through a complex multi-path beam transport and lens system to illuminate a study object along multiple directions. The object-scattered protons are imaged for analysis by a system of large-bore magnetic lenses. Design trade studies have compared normal and superconducting (SC) magnets for the transport and lens systems as well as many other tradeoffs in systems configuration. The development of the helium refrigerator/liquefier size and location, and distribution system for the AHF large-bore (20 and 50 cm diameter) pool-boiling, SC magnetic lens system is described. The magnetic-lens-option cryoplant (13-kW range at 4.43 K) and distribution system are site positioned and sized, and the system, facility and utility costs are estimated and compared to alternatives.
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