Key elements of space charge compensation on a low energy high intensity beam injector

Shixiang Peng; Pengnan Lu; Haitao Ren; Jie Zhao; Jia Chen; Yuan Xu; Zhiyu Guo; Jia'er Chen; Hongwei Zhao; Liangting Sun

doi:10.1063/1.4794966

Key elements of space charge compensation on a low energy high intensity beam injector

Rev Sci Instrum. 2013 Mar;84(3):033304. doi: 10.1063/1.4794966.

Authors

Shixiang Peng¹, Pengnan Lu, Haitao Ren, Jie Zhao, Jia Chen, Yuan Xu, Zhiyu Guo, Jia'er Chen, Hongwei Zhao, Liangting Sun

Affiliation

¹ Institution of Nuclear Science and Technology, State Key Laboratory of Nuclear Physics and Technology, Institute of Heavy Ion Physics, Peking University, Beijing 100871, China. sxpeng@pku.edu.cn

PMID: 23556812
DOI: 10.1063/1.4794966

Abstract

Space charge effect (SCE) along the beam line will decrease beam quality. Space charge compensation (SCC) with extra gas injection is a high-efficiency method to reduce SCE. In this paper, we will report the experimental results on the beam profile, potential distribution, beam emittance, and beam transmission efficiency of a 35 keV∕90 mA H(+) beam and a 40 keV∕10 mA He(+) beam compensated by Ar∕Kr. The influence of gas type, gas flow, and injection location will be discussed. Emphasis is laid on the consideration of SCC when designing and commissioning a high intensity ion beam injector. Based on measured data, a new definition of space charge compensation degree is proposed.

Publication types

Research Support, Non-U.S. Gov't