title: First results of 28 GHz superconducting electron cyclotron resonance ion source for KBSI accelerator.
abstract: The 28 GHz superconducting electron cyclotron resonance (ECR) ion source has been developed to produce a high current heavy ion for the linear accelerator at KBSI (Korea Basic Science Institute). The objective of this study is to generate fast neutrons with a proton target via a p(Li,n)Be reaction. The design and fabrication of the essential components of the ECR ion source, which include a superconducting magnet with a liquid helium re-condensed cryostat and a 10 kW high-power microwave, were completed. The waveguide components were connected with a plasma chamber including a gas supply system. The plasma chamber was inserted into the warm bore of the superconducting magnet. A high voltage system was also installed for the ion beam extraction. After the installation of the ECR ion source, we reported the results for ECR plasma ignition at ECRIS 2014 in Russia. Following plasma ignition, we successfully extracted multi-charged ions and obtained the first results in terms of ion beam spectra from various species. This was verified by a beam diagnostic system for a low energy beam transport system. In this article, we present the first results and report on the current status of the KBSI accelerator project.
authors.affiliation: Busan Center, Korea Basic Science Institute, Busan 609-735, South Korea.
authors.forename: Jin Yong
authors.initials: JY
authors.lastname: Park
authors.affiliation: Busan Center, Korea Basic Science Institute, Busan 609-735, South Korea.
authors.forename: Byoung-Seob
authors.initials: BS
authors.lastname: Lee
authors.affiliation: Busan Center, Korea Basic Science Institute, Busan 609-735, South Korea.
authors.forename: Seyong
authors.initials: S
authors.lastname: Choi
authors.affiliation: Busan Center, Korea Basic Science Institute, Busan 609-735, South Korea.
authors.forename: Seong Jun
authors.initials: SJ
authors.lastname: Kim
authors.affiliation: Busan Center, Korea Basic Science Institute, Busan 609-735, South Korea.
authors.forename: Jung-Woo
authors.initials: JW
authors.lastname: Ok
authors.affiliation: Busan Center, Korea Basic Science Institute, Busan 609-735, South Korea.
authors.forename: Jang-Hee
authors.initials: JH
authors.lastname: Yoon
authors.affiliation: Busan Center, Korea Basic Science Institute, Busan 609-735, South Korea.
authors.forename: Hyun Gyu
authors.initials: HG
authors.lastname: Kim
authors.affiliation: Busan Center, Korea Basic Science Institute, Busan 609-735, South Korea.
authors.forename: Chang Seouk
authors.initials: CS
authors.lastname: Shin
authors.affiliation: Busan Center, Korea Basic Science Institute, Busan 609-735, South Korea.
authors.forename: Jonggi
authors.initials: J
authors.lastname: Hong
authors.affiliation: Busan Center, Korea Basic Science Institute, Busan 609-735, South Korea.
authors.forename: Jungbae
authors.initials: J
authors.lastname: Bahng
authors.affiliation: Busan Center, Korea Basic Science Institute, Busan 609-735, South Korea.
authors.forename: Mi-Sook
authors.initials: MS
authors.lastname: Won