• Proceedings of the Korean Nuclear Society Conference
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• 1998.05b
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• pp.957-962
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• 1998

As the first stage accelerator of the Korea Multipurpose Accelerator Complex (KOMAC) 1GeV proton linac, a 350MHZ, cw Radio-Frequency Quadrupole (RFQ) will be built to produce 20㎃ of 3Mev. High current RFQ with cw operation is a major program in the KOMAC project to understand beam dynamics, engineering design, construction, control and diagnostics techniques. The beam dynamics and the engineering design of RFQ are described and the present status of the KOMAC RFQ project is discussed.

• Proceedings of the Korean Nuclear Society Conference
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• 1998.05b
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• pp.963-966
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• 1998

The KOMAC(KOrea Multi-purpose Accelerator Complex) linac is composed of RFQ(Radio Frequency Quadrupole), CCDTL(Coupled Cavity Drift Tube Linac) and SC(Superconducting)-linac. The required CW output power of RF system is about 25㎿ for 20㎿ proton beam power. Therefore high power RF sources are necessary for cost saving and reliability improvement. The number of klystrons for 0.5 ㎿ at 350MHz and 1 ㎿ at 700MHz are 1 and 31, respectively. In this paper, the design parameters of the klystron system including power supply and energy recovery system are presented.

• Nuclear Engineering and Technology
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• v.52 no.8
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• pp.1777-1783
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• 2020

As a part of R&D work for the high intensity proton linac of China Accelerator Driven Sub-critical System project, a superconducting half-wave cavity with a frequency of 162.5 MHz and an optimal beta of 0.15 (HWR015) has been developed at Institute of Modern Physics (IMP), Chinese Academy of Sciences. In this paper, the design and test results will be described in detail. We introduced a new stiffening strategy for the HWR cavity, the simulation results show that the cavity has much lower frequency sensitivity coefficient (df/dp), Lorentz force detuning coefficient (KL), and can achieve more stable mechanical properties. The performance of the HWR cavity operated in cryostat will be also reported.