RF-thermal-structural-RF coupled analysis on a travelling wave disk-loaded accelerating structure

PEI Shi-Lun; CHI Yun-Long; ZHANG Jing-Ru; HOU Mi; LI Xiao-Ping

doi:10.1088/1674-1137/36/6/013

Chinese Physics C> 2012, Vol. 36> Issue(6) : 555-560 DOI: 10.1088/1674-1137/36/6/013

RF-thermal-structural-RF coupled analysis on a travelling wave disk-loaded accelerating structure

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The travelling wave (TW) disk-loaded accelerating structure is one of the key components in normal conducting (NC) linear accelerators, and has been studied for many years. In the design process, usually after the dimensions of each cell and the two couplers are finalized, the structure is fabricated and tuned, and then the whole structure RF characteristics are measured by using a vector network analyzer. Before fabrication, the whole structure characteristics (including RF, thermal and structural ones) are less simulated due to the limited capability of currently available computers. In this paper, we described a method for performing RF-thermal-structural-RF coupled analysis on a TW disk-loaded structure using only one PC. In order to validate our method, we first analyzed and compared our RF simulation results on the 3 m long BEPCⅡ structure with the corresponding experimental results, which shows very good consistency. Finally, the RF-thermal-structure-RF coupled analysis results on the 1.35 m long NSC KIPT linac accelerating structure are presented.

References

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The BEPC R D Report, Part I, Injector, 1989[2] PEI Guo-Xi et al. Overview of BEPCⅡ Linac Upgrade. Preliminary Design Report of BEPCⅡ-Linac, IHEP-BEPCⅡ-SB-03. 2002.6[3] ANSYS is a Trademark of SAS Inc., www.ansys.com[4] PEI Shi-Lun, CHI Yun-Long et al. Beam Dynamics Studies on the 100 MeV/100 kW Electron Linear Accelerator for NSC KIPT Neutron Source. Proceedings of IPAC2011. Spain: Kursall, San Sebastian, 2011. 9[5] CHI Yun-Long et al. Design Report on the NSC KIPT Electron Linear Accelerator. Version 2, IHEP, 2011.8[6] PEI Shi-Lun, WANG Shu-Hong. HEP NP, 2005, 29(9): 912-917 (in Chinese)[7] XU Zhao-Jun. Heat Transfer Theory. Beijing: China Machine Press, 1980. 57[8] YAO Chong-Guo. Electron Linear Accelerator. Beijing: Science Press, 1986[9] Billen J H, Young L M. Possion Superfish: LA-UR-96-1834. Los Alamos National Laboratory, 2002[10] The MAFIA collaboration. MAFIA User Manual (Version 4.106). Germany: CST Inc., 2000[11] SHU Zhao et al. High Power Laser and Particle Beams, 2011, 23(1): 195-200 (in Chinese)

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PEI Shi-Lun, CHI Yun-Long, ZHANG Jing-Ru, HOU Mi and LI Xiao-Ping. RF-thermal-structural-RF coupled analysis on a travelling wave disk-loaded accelerating structure[J]. Chinese Physics C, 2012, 36(6): 555-560. doi: 10.1088/1674-1137/36/6/013

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Received: 2011-08-17
Revised: 1900-01-01

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

RF-thermal-structural-RF coupled analysis on a travelling wave disk-loaded accelerating structure

Corresponding author: PEI Shi-Lun,

Received Date: 2011-08-17

Accepted Date: 1900-01-01

Available Online: 2012-06-05

Abstract: The travelling wave (TW) disk-loaded accelerating structure is one of the key components in normal conducting (NC) linear accelerators, and has been studied for many years. In the design process, usually after the dimensions of each cell and the two couplers are finalized, the structure is fabricated and tuned, and then the whole structure RF characteristics are measured by using a vector network analyzer. Before fabrication, the whole structure characteristics (including RF, thermal and structural ones) are less simulated due to the limited capability of currently available computers. In this paper, we described a method for performing RF-thermal-structural-RF coupled analysis on a TW disk-loaded structure using only one PC. In order to validate our method, we first analyzed and compared our RF simulation results on the 3 m long BEPCⅡ structure with the corresponding experimental results, which shows very good consistency. Finally, the RF-thermal-structure-RF coupled analysis results on the 1.35 m long NSC KIPT linac accelerating structure are presented.

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RF-thermal-structural-RF coupled analysis on a travelling wave disk-loaded accelerating structure

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