期刊
JOURNAL OF THE KOREAN PHYSICAL SOCIETY
卷 66, 期 3, 页码 340-344出版社
KOREAN PHYSICAL SOC
DOI: 10.3938/jkps.66.340
关键词
Accelerating structure; PAL-XFEL; Racetrack; Coupler
资金
- ministry of science, ICT and future planning (MSICTFP)
One hundred seventy-two accelerating structures are required for the Pohang Accelerator Laboratory X-ray free-electron laser's (PAL-XFEL's) 10-GeV main linear accelerator. So far, we have purchased 80 structures from Mitsubishi Heavy Industry (MHI), which have quasi-symmetric couplers in the accelerating structure to reduce the quadruple and the sextuple components of the electric field in the coupling cavity. High-power tests have been conducted for the first structure of the MHI structure, and Research Instruments (RI) has developed a 3-m long accelerating structure that has an operating frequency of 2856 MHz and in/out couplers of quasi-symmetric racetrack shape for the PAL-XFEL linear accelerator. This structure also has been tested by PAL and RI in the Pohang accelerator laboratory (PAL) to check the maximum available electric field gradient. We will describe the test results of these structures and the current status for the fabrication of the other accelerating structures in this paper.
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