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Experimental study of wakefields driven by a self-modulating proton bunch in plasma

Abstract:
We study experimentally the longitudinal and transverse wakefields driven by a highly relativistic proton bunch during self-modulation in plasma. We show that the wakefields’ growth and amplitude increase with increasing seed amplitude as well as with the proton bunch charge in the plasma. We study transverse wakefields using the maximum radius of the proton bunch distribution measured on a screen downstream from the plasma. We study longitudinal wakefields by externally injecting electrons and measuring their final energy. Measurements agree with trends predicted by theory and numerical simulations and validate our understanding of the development of self-modulation. Experiments were performed in the context of the Advanced Wakefield Experiment (AWAKE).
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1103/PhysRevAccelBeams.23.081302

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Publisher:
American Physical Society
Journal:
Physical Review Accelerators and Beams More from this journal
Volume:
23
Issue:
8
Article number:
81302
Publication date:
2020-08-04
Acceptance date:
2020-07-10
DOI:
EISSN:
2469-9888


Language:
English
Keywords:
Pubs id:
1128329
Local pid:
pubs:1128329
Deposit date:
2020-12-11

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