Development of the Low Return Loss 340-Size Ceramic Window for the APS Linac.

Berg, S. ; Bromberek, D. ; Goeppner, G. ; Haase, A. ; Hoyt, J. ; Michalek, W. ; Smith, T.

Technical Information Center Oak Ridge Tennessee

关键词: Advanced photon source;    Radio frequencies;    Linear accelerators;    Waveguides;    Brazing;   

RP-ID  :  DE200344217

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

The Advanced Photon Source (APS) linac high-power switching system makes use of 340-size waveguide components. These components include vacuum-grade furnace-brazed transitions, pressurized-grade aluminum 340-size switches, and more recently 340-size ceramic windows. The fabrication of these 340-size windows proceeded with brazing of ceramic membrane to thin-walled copper sleeves and real-time network analyzer testing performed by the ASD (Accelerator Systems Division) RF (Radio Frequency) Group. Initially it was thought that this real-time testing of prototype hardware would be necessary in the investigative stage to establish the required dimensions and physical geometry to satisfy the 40-dB return-loss criteria. However, producing four windows now installed involved real-time network analyzer testing during production of each window conducted in parallel with adjustments of tuners designed into each 340-size ceramic window.