The radio-frequency design of an iris-type coupler for the CPHS radio-frequency quadrupole

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XIONG Zheng-Feng, ZHENG Shu-Xin, XING Qing-Zi and GUAN Xia-Ling. The radio-frequency design of an iris-type coupler for the CPHS radio-frequency quadrupole[J]. Chinese Physics C, 2012, 36(1): 96-100. doi: 10.1088/1674-1137/36/1/017
XIONG Zheng-Feng, ZHENG Shu-Xin, XING Qing-Zi and GUAN Xia-Ling. The radio-frequency design of an iris-type coupler for the CPHS radio-frequency quadrupole[J]. Chinese Physics C, 2012, 36(1): 96-100.  doi: 10.1088/1674-1137/36/1/017 shu
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Received: 2011-03-02
Revised: 2011-05-06
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The radio-frequency design of an iris-type coupler for the CPHS radio-frequency quadrupole

Abstract: The Compact Pulsed Hadron Source (CPHS) project is a university-based proton accelerator platform (13 MeV, 16 kW, 50 mA peak current, 0.5 ms pulse width at 50 Hz) for multi-disciplinary neutron and proton applications. The CPHS linac consists of a 3 MeV radio-frequency quadrupole (RFQ) linac and a 13 MeV drift tube linac (DTL). Both the RFQ and DTL share a 325 MHz, 2.1 MW klystron source. A single iris-type radio-frequency (RF) coupler is used to feed 537 kW of RF power to the RFQ cavity. Three-dimensional electromagnetic models of the ridge-loaded tapered waveguide (RLWG) and the coupler-cavity system are presented, and the design process and results of the RLWG and iris plate are described in detail.

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