Conceptual Design of an 88-MHz KBSI Radio-frequency Quadrupole Linear Accelerator

다국어 초록 (Multilingual Abstract)

In order to accelerate ions, a radio-frequency quadrupole (RFQ) linear accelerator is being developedat the Korea Basic Science Institute (KBSI). The KBSI RFQ is designed to accelerate 1-pmAof lithium trivalent ions (A/Q = 7/3) by using a four-vane structure. We chose 88-MHz for the RFoperating frequency. The energy of the beam injected into the RFQ is 12 keV/u whereas the energyof the downstream output beam is 300 keV/u. The beam dynamics inside RFQ linear acceleratorwas studied using the PARMTEQM code. The length of the RFQ was approximately 2 m witha transmission rate of 97.4% for lithium trivalent ions. For the structural design, a 2-dimensionalgeometry structure was studied using the SUPERFISH code near the resonance frequency of thequadrupole and the dipole modes. The 3-dimensional field distributions inside the RFQ cavity wereinvestigated using CST Microwave Studio. The RFQ’s conceptual design and preliminary resultsfor this model are reported.

참고문헌 (Reference)

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