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Vacuum Auxiliary System

The US will contribute 100% towards the roughing pumps and vacuum auxiliary system.

The ITER tokamak, cryostat, and auxiliary vacuum chambers must be evacuated prior to and during operations. The roughing pump system exhausts the torus and neutral beam injector cryopumps, service vacuum, and cryostat. This system will utilize a matrix of pump trains with various technologies to match specific vacuum system requirements, including tritium-compatible backing pumps for torus and neutral beam cryopumps.

The vacuum auxiliary system consists of valves, pipe manifolds, auxiliary pumps, sensors, and controls. The torus and neutral beam injector vacuum manifolds of this system need to be tritium compatible.

For more information, contact:

  • David Williamson, US ITER Project Office Vacuum and Pumping Team Leader (Acting), Oak Ridge National Laboratory, williamsonde@ornl.gov | 865-574-1121
The team involved in the development of radiation hardened electronics for US ITER includes (left to right): Frank Ivester, Shane Frank, Claudell Harvey, Nance Ericson and Kurt Vetter. Credit: ORNL

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Instrumentation and controls system scope for US ITER

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Cryoviscous compressor in testing at the ORNl Spallation Neutron Source

ITER pump design benefits from testing at ORNL Spallation Neutron Source cryogenic facility

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Steve Combs with target materials for disruption mitigation pellets

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