Conceptual design of an 88-MHz KBSI radio-frequency quadrupole linear accelerator

Jung Woo Ok, Seyon Choi, Jang Hee Yoon, Byoung Seob Lee, Jin Yong Park, Mi Sook Won, Jung Keun Ahn

Research output: Contribution to journalArticlepeer-review


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

Original languageEnglish
Pages (from-to)1311-1315
Number of pages5
JournalJournal of the Korean Physical Society
Issue number7
Publication statusPublished - 2013 Oct
Externally publishedYes


  • Linear accelerator
  • Radio-frequency quadrupole (RFQ)

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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