Journal article
Proton bunch self-modulation in plasma with density gradient
- Abstract:
- We study experimentally the effect of linear plasma density gradients on the self-modulation of a 400 GeV proton bunch. Results show that a positive or negative gradient increases or decreases the number of microbunches and the relative charge per microbunch observed after 10 m of plasma. The measured modulation frequency also increases or decreases. With the largest positive gradient we observe two frequencies in the modulation power spectrum. Results are consistent with changes in wakefields’ phase velocity due to plasma density gradients adding to the slow wakefields’ phase velocity during self-modulation growth predicted by linear theory.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 1.1MB, Terms of use)
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- Publisher copy:
- 10.1103/PhysRevLett.125.264801
Authors
Contributors
+ AWAKE Collaboration
- Division:
- MPLS
- Department:
- Physics
- Oxford college:
- Jesus College
- Role:
- Contributor
- Publisher:
- American Physical Society
- Journal:
- Physical Review Letters More from this journal
- Volume:
- 125
- Article number:
- 264801
- Publication date:
- 2020-12-28
- Acceptance date:
- 2020-11-10
- DOI:
- EISSN:
-
1079-7114
- ISSN:
-
0031-9007
- Language:
-
English
- Keywords:
- Pubs id:
-
1148658
- Local pid:
-
pubs:1148658
- Deposit date:
-
2020-12-11
- ARK identifier:
Terms of use
- Copyright holder:
- Braunmüller et al.
- Copyright date:
- 2020
- Rights statement:
- © The Author(s) 2020. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Open access publication funded by the Max Planck Society.
- Licence:
- CC Attribution (CC BY)
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