title: A low energy beam transport system for proton beam.
abstract: A low energy beam transport (LEBT) system has been built for a compact pulsed hadron source (CPHS) at Tsinghua University in China. The LEBT, consisting of two solenoids and three short-drift sections, transports a pulsed proton beam of 60 mA of energy of 50 keV to the entrance of a radio frequency quadrupole (RFQ). Measurement has shown a normalized RMS beam emittance less than 0.2 π mm mrad at the end of the LEBT. Beam simulations were carried out to compare with the measurement and are in good agreement. Based on the successful CPHS LEBT development, a new LEBT for a China ADS projector has been designed. The features of the new design, including a beam chopper and beam simulations of the LEBT are presented and discussed along with CPHS LEBT development in this article.
authors.affiliation: Institute of Modern Physics, CAS, Lanzhou 730000, China. yangyao@impcas.ac.cn
authors.forename: Y
authors.initials: Y
authors.lastname: Yang
authors.forename: Z M
authors.initials: ZM
authors.lastname: Zhang
authors.forename: Q
authors.initials: Q
authors.lastname: Wu
authors.forename: W H
authors.initials: WH
authors.lastname: Zhang
authors.forename: H Y
authors.initials: HY
authors.lastname: Ma
authors.forename: L T
authors.initials: LT
authors.lastname: Sun
authors.forename: X Z
authors.initials: XZ
authors.lastname: Zhang
authors.forename: Z W
authors.initials: ZW
authors.lastname: Liu
authors.forename: Y
authors.initials: Y
authors.lastname: He
authors.forename: H W
authors.initials: HW
authors.lastname: Zhao
authors.forename: D Z
authors.initials: DZ
authors.lastname: Xie