TL;DRAbstract
initial plasma. The neutral-beam system is based on a design proved in 2XIIB, with modifications to provide increased extraction potential, ease of maintenance, and flexibility. The primary vacuum system for MX is designed to pump the molecular gas introduced by the ion sources, the neutral-beam particles that penetrate the plasma, and the mirror leakage particles. The vacuum regions are the injector-dump tanks, the end regions, and the side region around the plasma chamber. Liquid-helium-cooled cryopanels, shielded by liquid-nitrogen-cooled chevrons, do the pumping. The MX facility will include a structure to house the MX machine and its attendant diagnostics and power supplies, a cryogenic refrigeration system, and an external vacuum pumping system. Design of the facility requires a study of structural requirements, heat load, and source gas load.
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initial plasma. The neutral-beam system is based on a design proved in 2XIIB, with modifications to provide increased extraction potential, ease of maintenance, and flexibility. The primary vacuum system for MX is designed to pump the molecular gas introduced by the ion sources, the neutral-beam particles that penetrate the plasma, and the mirror leakage particles. The vacuum regions are the injector-dump tanks, the end regions, and the side region around the plasma chamber. Liquid-helium-cooled cryopanels, shielded by liquid-nitrogen-cooled chevrons, do the pumping. The MX facility will include a structure to house the MX machine and its attendant diagnostics and power supplies, a cryogenic refrigeration system, and an external vacuum pumping system. Design of the facility requires a study of structural requirements, heat load, and source gas load.
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