Mismatch study of C-ADS main linac

• 作 者: 孟才 唐靖宇 裴士伦 闫芳
• 机 构: Key Laboratory of Particle Acceleration Physics & Technology, Institute of High Energy Physics,Chine
• 出 处: Chinese Physics C
• 发表日期: 2015年09期
• 关键词: linac mismatch accelerator longitudinal proton instability advances extremely fo

The ADS accelerator in China is a Continuous-Wave(CW) proton linac with 1.5 Ge V beam energy,10 m A beam current, and 15 MW beam power. To meet the extremely low beam loss rate and high reliability requirements, it is very important to study the beam halo caused by beam mismatch, which is one major sources of beam loss. To avoid envelope instability, the phase advances per period are all smaller than 90 degrees in the main linac design. In this paper, simulation results of the emittance growth and the envelope oscillations caused by mismatch in the main linac section are presented. To meet the emittance growth requirement, the transverse and longitudinal mismatch factors should be smaller than 0.4 and 0.3, respectively.

The ADS accelerator in China is a Continuous-Wave (CW) proton linac with 1.5 Ge V beam energy, 10 m A beam current, and 15 MW beam power. To meet the extremely low beam loss rate and high reliability requirements, it is very important to study the beam halo caused by beam mismatch, which is one major sources of beam loss. To avoid envelope instability, the phase advances per period are all smaller than 90 degrees in the main linac design. In this paper, simulation results of the emittance growth and the envelope oscillations caused by mismatch in the main linac section are presented. To meet the emittance growth requirement, the transverse and longitudinal mismatch factors should be smaller than 0.4 and 0.3, respectively.