RF power coupling for the CSNS DTL

LIU Hua-Chang; PENG Jun; YIN Xue-Jun; OUYANG Hua-Fu; FU Shi-Nian

doi:10.1088/1674-1137/35/1/019

Chinese Physics C> 2011, Vol. 35> Issue(1) : 92-95 DOI: 10.1088/1674-1137/35/1/019

RF power coupling for the CSNS DTL

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Abstract：
The China Spallation Neutron Source (CSNS) drift tube linac (DTL) consists of four tanks and each tank is fed by a 2.5 MW klystron. Accurate predication of RF coupling between the RF cavity and ports is very important for DTL RF coupler design. An iris-type coupler is chosen to couple the RF power to the DTL accelerating cavity. The physical design of the DTL coupler and the calculations of RF coupling between the cavity and coupler are carried out. The results from the numerical simulations are in excellent agreement with the analytical results.

References

[1]

WEI J, FU S N et al. Chinese Physics C, 2009, 33(11): 1033-10422 Belomestnykh S. Review of High Power CW Couplers for Superconducting Cavities. Proc. of Workshop on High-Power Couplers for Superconducting Accelerators. 20023 YAN R Q. Basis of Microwave Technology (2). Beijing: Beijing Institute of Press, 1996. 126-128 (in Chinese)4 GAO J. Nucl. Instrum. Methods A, 1991, 309: 55 Han-Sung KIM et al. Journal of the Korean Physics Society, 2006, 48(4): 732-7356 PENG J, SUN Z R, FU S N. Design of 132~MeV DTL for CSNS. Proc. of Linac 2006. 2006. 412-4147 Kurennoy S S，Young L M. RF Coupler for High Power CW FEL Photo Injector. Proceedings of PAC2003. 2003. 35158 Kroll N, YU D. Particle Accelerators, 1990, 34: 231-2339 Sergey Kurennoy et al. RF Couplers for Normal Conducting Photo Injector of High Power CW FEL. Meeting of the American Physical Society. 2004. 125

[1] Xu Jianming . Matching Problem of Lattice with Transverse Coupling. Chinese Physics C, 1995, 19(1): 73-81.
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LIU Hua-Chang, PENG Jun, YIN Xue-Jun, OUYANG Hua-Fu and FU Shi-Nian. RF power coupling for the CSNS DTL[J]. Chinese Physics C, 2011, 35(1): 92-95. doi: 10.1088/1674-1137/35/1/019

LIU Hua-Chang, PENG Jun, YIN Xue-Jun, OUYANG Hua-Fu and FU Shi-Nian. RF power coupling for the CSNS DTL[J]. Chinese Physics C, 2011, 35(1): 92-95. doi: 10.1088/1674-1137/35/1/019 shu

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Received: 2010-03-25
Revised: 2010-05-20

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沈阳化工大学材料科学与工程学院沈阳 110142

RF power coupling for the CSNS DTL

Received Date: 2010-03-25
Accepted Date: 2010-05-20
Available Online: 2011-01-05

Abstract: The China Spallation Neutron Source (CSNS) drift tube linac (DTL) consists of four tanks and each tank is fed by a 2.5 MW klystron. Accurate predication of RF coupling between the RF cavity and ports is very important for DTL RF coupler design. An iris-type coupler is chosen to couple the RF power to the DTL accelerating cavity. The physical design of the DTL coupler and the calculations of RF coupling between the cavity and coupler are carried out. The results from the numerical simulations are in excellent agreement with the analytical results.