Controlled Growth of the Self-Modulation of a Relativistic Proton Bunch in Plasma

, AWAKE Collaboration and Dexter, Amos (2022) Controlled Growth of the Self-Modulation of a Relativistic Proton Bunch in Plasma. Physical review letters, 129 (2). ISSN 1079-7114

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Abstract

A long, narrow, relativistic charged particle bunch propagating in plasma is subject to the self-modulation (SM) instability. We show that SM of a proton bunch can be seeded by the wakefields driven by a preceding electron bunch. SM timing reproducibility and control are at the level of a small fraction of the modulation period. With this seeding method, we independently control the amplitude of the seed wakefields with the charge of the electron bunch and the growth rate of SM with the charge of the proton bunch. Seeding leads to larger growth of the wakefields than in the instability case.

Item Type:
Journal Article
Journal or Publication Title:
Physical review letters
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100
Subjects:
ID Code:
174099
Deposited By:
Deposited On:
12 Aug 2022 10:05
Refereed?:
Yes
Published?:
Published
Last Modified:
12 Aug 2022 10:05