Design study of the low energy beam transport line for the post-accelerator of RAON

by Yumi Lee (MS Candidate)

Wednesday Nov 26, 2014, 3:10 PM → 3:40 PM Asia/Seoul

119호 (제1과학관)

Low-energy ions produced by the ion source pass through the focusing and acceleration sections. During this process, the ions accumulate energy and are finally transported to the apparatus that utilizes them for a specific purpose. Thus, in order to increase the transmission efficiency of the ion beams, the low energy beam transport (LEBT) system must minimize the beam loss and the emittance growth. The LEBT system is designed and optimized to transmit 132Sn16+ (A/Q=8.25) and 58Ni8+ (A/Q=7.25) beams of the post accelerator at RAON that is the accelerator complex for the rare isotope science in Korea. The post LEBT line comprises solenoids, electrostatic quadrupoles, and a dipole magnet for transverse focusing and a multi-harmonic buncher for longitudinal focusing. This paper presents the results of the optical design and beam tracking for the post LEBT obtained using TraceWIN and TRACK simulation codes.

Thesis Advisor: Prof. Eun-San Kim