Cryogenic RF Material Testing with a High-Q Copper Cavity

• Published in: AIP conference proceedings Vol. 1299; no. 1
• Main Authors: Guo Jiquan, Tantawi, Sami, Martin, David, Yoneda, Charles
• Format: Journal Article
• Language: English
• Published: United States 01.01.2010
• Subjects: ACCELERATORS; CAVITY RESONATORS; COPPER; CRYOGENICS; ELECTRON TUBES; ELECTRONIC EQUIPMENT; ELEMENTS; KLYSTRONS; MATERIALS SCIENCE; MATERIALS TESTING; METALS; MICROWAVE EQUIPMENT; MICROWAVE TUBES; PARTICLE ACCELERATORS; QUENCHING; RESONATORS; RF SYSTEMS; SURFACES; TESTING; TRANSITION ELEMENTS; VOIDS
• DOI: 10.1063/1.3520338
• ISSN: 0094-243X

An X-band RF cryogenic material testing system has been developed in the past few years. This system employs a high-Q copper cavity with an interchangeable flat bottom working under a TE{sub 013} like mode. By measuring the cavity Qs with a network analyzer, the system can characterize the surface resistance of different samples at different temperatures. Using a 50 MW 2{mu}s pulsed klystron, the system can measure the quenching H field for superconducting samples, up to 300-400 mT. In this paper, we will present the most recent developments of the system and testing results.