26–31 Oct 2025
Wang Center
America/New_York timezone

Longitudinal Beam Stacking in Storage Ring using Pulsed Electron Cooling

FRA1
31 Oct 2025, 09:00
30m
Wang Center

Wang Center

Stony Brook University campus, Stony Brook, New York
Contributed Oral Presentation COOL'25 Coolers Designs and Proposals

Speaker

He Zhao (Institute of Modern Physics, Chinese Academy of Sciences)

Description

Longitudinal ion beam stacking in a storage ring using a barrier rf system combined with beam cooling has been successfully demonstrated in several experiments. Based on the bunching effect observed in the pulsed electron beam cooling experiment at HIRFL-CSRm, we propose a new beam stacking scheme using only pulsed electron beam, in which the barrier voltage and cooling process can be achieved simultaneously. In this paper, we introduce this longitudinal stacking scheme along with the theory of beam dynamics and present a simple analytical model. The simulation demonstrates that this approach could be a useful beam stacking technique without the need for barrier bucket hardware. Moreover, the optimization and limitation of this stacking scheme are discussed, and the effect of the electron beam distribution on the barrier voltage is studied. This stacking method is expected to be a promising tool for accumulating RIBs in low- and medium-energy storage rings, such as the SRing of the HIAF project, where high-precision experiments require efficient accumulation techniques.

Funding Agency

National Natural Science Foundation of China and Chinese Academy of Sciences

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Authors

He Zhao (Institute of Modern Physics, Chinese Academy of Sciences) Lijun Mao (Institute of Modern Physics) Xiaodong Yang (Institute of Modern Physics, Chinese Academy of Sciences)

Presentation materials

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