Development of a compact 325 MHz proton interdigital H-mode drift tube linac with high shunt impedance
oleh: P. F. Ma (马鹏飞), R. Tang (唐若), Y. Yang (杨业), S. X. Zheng (郑曙昕), W. B. Ye (叶文博), M. W. Wang (王敏文), W. L. Liu (刘卧龙), B. C. Wang (王百川), Q. Z. Xing (邢庆子), C. T. Du (杜畅通), H. Y. Zhang (张化一), J. Li (李健), X. L. Guan (关遐令), X. W. Wang (王学武), Z. M. Wang (王忠明), M. T. Qiu (邱孟通)
| Format: | Article |
|---|---|
| Diterbitkan: | American Physical Society 2021-02-01 |
Deskripsi
This paper describes the construction, rf measurement and tuning, rf conditioning, and beam commissioning of a compact 325 MHz interdigital H-mode (IH) drift tube linac (DTL) with modified KONUS (Kombinierte Null Grad Struktur, combined zero-degree structure) beam dynamics at Tsinghua University. This IH-DTL accelerates a proton beam from 3 MeV to 7 MeV in about 1 m. With a high rf frequency of 325 MHz, the cavity is designed to be compact while retaining a high average gradient of 4 MV/m. The efficient shunt impedance ZT^{2} is 101 MΩ/m. The beam test results show good agreement with the beam dynamics design. The developed compact IH-DTL can be applied to the injectors of medical proton machines.