Speaker
Description
The Brayton Circulating Cooling System is a unique refrigeration system developed as a technology demonstration for providing cold helium gas refrigeration at high pressures to an external superconducting magnet or any remote load for cool down purposes. The system is designed to provide cool down refrigeration from room temperature to target minimum temperatures of approximately 40K.
The system consists of an F-70H helium compressor with gas control manifold, interconnecting gas lines, cables, the Brayton refrigeration unit mounted in a Dewar assembly and a control system. Electricity, cooling water for the compressor and a source of helium (99.995%) for make-up gas are the only required utilities. The prototype achieved 1300W at 291K and minimum temperature of 56K when measured with an external heat load simulator. The scope of the project, system design, target specifications and summary of test results will be discussed in this paper.
