Evaluation of low-loss alumina material for high-power RF windows

被引：0

作者：

Thielk, S. U. ^{[1
]}

Agustsson, R. ^{[1
]}

Carriere, P. ^{[1
]}

Kutsaev, S., V ^{[1
]}

机构：

[1] RadiaBeam Technol LLC, Santa Monica, CA 90403 USA

来源：

IPAC23 PROCEEDINGS | 2024年 / 2687卷

关键词：

D O I：

10.1088/1742-6596/2687/8/082044

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

Conventional RF vacuum windows are made of metalized ceramics, hermetically brazed to a pillbox cavity. High-power windows, operating in ultra-high frequency (UHF) band, require the fabrication of ceramic disks with diameters on the order of 9''. Furthermore, a Titanium Nitride (TiN) multipactor suppression coating must be applied to the ceramic surfaces. The large size and complex internal geometry of these windows create challenges in validating the coating in the fully fabricated assembly. This study evaluates a novel low-loss alumina AO479U, provided by Kyocera, and a reactive sputtering process suitable to deposit a 10-20 nm thick TiN coating on a large diameter window. The paper will report the changes in the TiN coating through chemical cleaning and vacuum braze processes using stylus profilometry, optical microscopy, Scanning Electron Microscopy (SEM), and Rutherford Backscattering Spectroscopy (RBS).

引用

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