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ELSEVIER
DOI: 10.1016/j.nima.2021.165455
Keywords
Radio-frequency quadrupole; Compact neutron source
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- National Natural Science Foundation of China [U1730120]
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This paper describes the physical design of a radio-frequency quadrupole (RFQ) accelerator for a compact accelerator-driven neutron source. The objective of this design is to obtain a short RFQ with a tolerable transmission and power consumption, which was achieved using a modified four-section procedure.
This paper describes the physical design of a radio-frequency quadrupole (RFQ) accelerator for a compact accelerator-driven neutron source. The 325-MHz RFQ accelerates a 30-mA deuteron beam from 50 keV to 2 MeV, which is directly matched to the drift-tube linac (DTL) without a separate beam matching section. The objective of this design is to obtain a short RFQ with a tolerable transmission and power consumption. Using a modified four-section procedure, the inter-vane voltage is ramped with RFQ longitudinal position to obtain the required short length, and the focusing strength is varied to suppress beam loss. The RFQ has a length of 193.2 cm, with a peak power consumption of 186 kW, and a beam transmission of 94.1%.
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