Studies of the Coherent Half-Integer Resonance.

Cousineau, S. ; Holmes, J. ; Galambos, J. ; Macek, R. ; Fedotov, A. ; Wei, J.

Technical Information Center Oak Ridge Tennessee

关键词: Space charge;    Beam intensity;    Behavior;    Sensitivity;    Beam resonance response;   

RP-ID  :  DE2003804614

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

We present studies of space-charge-induced beam pro- file broadening at high intensities in the Proton Storage Ring (PSR) at Los Alamos National Laboratory. Previous work has associated the observed broadening in the vertical direction with the coherent half integer resonance. Here, we study the effect of the space charge environment on this resonance; specifically, we investigate the strength of the resonance versus beam intensity, longitudinal bunching factor, transverse lattice tune, and two different beam injection scenarios. For each case, detailed particle-in-cell simulations are combined with experimental results to elucidate the behavior and sensitivity of the beam resonance response.