Experimental heat leak measurements on the APT 210 KW CW RF power coupler
- John Patrick
- Scott A.
- James A.
- Joseph A.
A cryogenic test rig was designed and fabricated to measure the heat leak from room temperature to 2 K from the Accelerator Production of Tritium (APT) 700 MHz, 210 kW continuous wave (CW) co-axial power coupler (PC). The outer conductor of the PC is stainless steel with 15 {micro}m copper film on the inside. The copper inner conductor operates at room temperature and contributes considerable infra-red radiation heat load to 2 K. Two thermal intercept heat exchangers cooled by supercritical helium are incorporated into the outer conductor to reduce the heat conducted to the lowest temperatures. A brief description of the experimental apparatus is presented. A comparison of the experimental measurements and the predictions of a detailed thermal model is given. There is also a discussion of anomalous behavior observed in the thermal intercepts, and fluctuations in the helium coolant properties.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 975635
- Report Number(s):
- LA-UR-01-3794; TRN: US1002517
- Resource Relation:
- Conference: "Submitted to: Cryogenic Engineering Conference Madison, WI, July 16-20, 2001."
- Country of Publication:
- United States
- Language:
- English
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