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Synchrotron/Neutron/Fusion » Fusion » Rotary Joint for Coaxial RF Conductor
Rotary Joint for Coaxial RF Conductor

ADC is presently designing a rotating joint to be placed at intervals in the ITER coaxial RF conduction system.  This joint reduces stress in the line by rotating slightly as the surrounding structures expand and contract from heating and cooling.  It must rotate with minimum resistance while containing nitrogen gas inside the line at high pressure.  The design minimizes the number of parts required, minimizes the length and weight, and uses standard, commercially available bearings and seals.