The mechanical design and fabrication of 162.5 MHz buncher for China accelerator driven sub-critical system injector II

A buncher is one of the main pieces of equipment in the medium energy beam transport line (MEBT) for China accelerator driven sub-critical system (C-ADS) Injector II. To focus the beam longitudinally and match the beam for the acceptance of the superconducting linac section, two room temperature qua...

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Bibliographic Details
Published in:Nuclear engineering and technology 2017, 49(5), , pp.1071-1078
Main Authors: Niu, Haihua, Li, Youtang, He, Yuan, Zhang, Bin, Huang, Shichun, Yuan, Chenzhang, Jia, Huan, Zhang, Shenghu
Format: Article
Language:English
Subjects:
Buncher
Coupler
Fabrication
MEBT
Mechanical design
Tuner
원자력공학
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Summary:A buncher is one of the main pieces of equipment in the medium energy beam transport line (MEBT) for China accelerator driven sub-critical system (C-ADS) Injector II. To focus the beam longitudinally and match the beam for the acceptance of the superconducting linac section, two room temperature quarter wave resonator (QWR) bunchers with frequency of 162.5 MHz have been designed as parts of the MEBT. According to the beam transmission matching of the MEBT and the geometric parameters requirements of bunchers, the unique mechanical structure and the main processing technology of buncher cavities and their couplers and tuners are described in this paper. The fabrication of bunchers and their parts have been completed and tested at high power, the test results agree well with the design requirements. These bunchers work well for about two years in Institute of Modern Physics, Chinese Academy of Sciences.
ISSN:1738-5733
2234-358X
DOI:10.1016/j.net.2017.03.003