한국진공학회:학술대회논문집 (Proceedings of the Korean Vacuum Society Conference)
- 한국진공학회 2013년도 제44회 동계 정기학술대회 초록집
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- Pages.537-537
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- 2013
A Simulation Study of a Chopping System for Extracting a Pulsed Beam from a Cyclotron
- 김재홍 (중이온가속기구축사업단, 기초과학연구원) ;
- 홍성광 (중이온가속기구축사업단, 기초과학연구원) ;
- 김미정 (중이온가속기구축사업단, 기초과학연구원) ;
- 김성준 (중이온가속기구축사업단, 기초과학연구원) ;
- 김명진 (중이온가속기구축사업단, 기초과학연구원) ;
- 김도균 (중이온가속기구축사업단, 기초과학연구원) ;
- 윤종철 (중이온가속기구축사업단, 기초과학연구원) ;
- 김종원 (중이온가속기구축사업단, 기초과학연구원)
- Kim, Jae-Hong ;
- Hong, Seong-Gwang ;
- Kim, Mi-Jeong ;
- Kim, Seong-Jun ;
- Kim, Myeong-Jin ;
- Kim, Do-Gyun ;
- Yun, Jong-Cheol ;
- Kim, Jong-Won
- 발행 : 2013.02.18
초록
Cyclotron-accelerated ion beams are used for various researches, such as nuclear physics, nuclear chemistry, biotechnology, and material sciences including radio-isotope production. Recently considerable applications are asked to the cyclotron development undertaken to meet user requirements of various ions'energies, intensities, and their pulsed beams. For instance, a cocktail beam acceleration technique rapidly changing the ion species and energies was developed to irradiating integrated circuit chips. Also a chopping system in a cyclotron injection line is considered for producing a pulsed ion beam with a relatively long period compared with that generated by the resonance frequency. For the research in neutron time-of-flight measurement, a single-pulsed beam with a repetition interval of the order of mili-seconds or longer is necessary to have a good resolution and to remove background events. In this paper a feasibility of pulsed beam with an external ion source is simulated by adopting a combination system of a chopper accompanying with a bunching stage in the injection line and an additional chopper after the exit of the cyclotron in order to produce beam pulses with a range of