Self-field compensation utilizing nonlinear fields at the front-end of a linear ion accelerator

TUIBC02
Oct 21, 2025, 11:30 AM
20m
Room C (Conference Center)

Room C

Conference Center

Invited Oral Presentation WGB:Beam Dynamics in Linacs TUIBC WGB invited oral

Speaker

Motoki Chimura (Japan Atomic Energy Agency)

Description

In high-intensity ion accelerators where beam density is high and beam velocity is low, the beam receives a significant impulse from the self field. This results in a sudden emittance growth over a short distance. This emittance growth manifests at the local level, necessitating the employment of analytical and suppression methods that differ from conventional approaches. Conventional methods presuppose periodic structures, whereas the present study employs methods that do not rely on such assumptions. In this presentation, we propose a series of research results, including an in-depth analysis of the conditions under which emittance growth occurs in regions where the influence of the self field is strong. We also put forward a novel suppression method and examine its efficacy.

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Author

Motoki Chimura (Japan Atomic Energy Agency)

Co-authors

Dr Hiroyuki Harada (Japan Atomic Energy Agency) Michikazu Kinsho (Japan Atomic Energy Agency) Tomohiro Takayanagi (Japan Atomic Energy Agency)

Presentation materials

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