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  Proton Bunch Self-Modulation in Plasma with Density Gradient

Braunmüller, F., Nechaeva, T., & Collboration, A. (2020). Proton Bunch Self-Modulation in Plasma with Density Gradient. Physical Review Letters, 125, 264801. Retrieved from https://publications.mppmu.mpg.de/?action=search&mpi=MPP-2020-246.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0008-1B7D-F Version Permalink: https://hdl.handle.net/21.11116/0000-0008-1B7E-E
Genre: Journal Article

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 Creators:
Braunmüller, F.1, Author
Nechaeva, T.1, Author
Collboration, AWAKE1, Author
Affiliations:
1Max Planck Institute for Physics, Max Planck Society and Cooperation Partners, ou_2253650              

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Free keywords: AWAKE
 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/negative gradient in/decreases the number of micro-bunches and the relative charge per micro-bunch observed after 10\,m of plasma. The measured modulation frequency also in/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 gradient adding to the slow wakefields' phase velocity during self-modulation growth predicted by linear theory.

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 Dates: 2020
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: Other: MPP-2020-246
URI: https://publications.mppmu.mpg.de/?action=search&mpi=MPP-2020-246
arXiv: arxiv:2007.14894
URI: https://inspirehep.net/literature?q=find%20eprint%202007.14894
 Degree: -

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Title: Physical Review Letters
  Abbreviation : Phys.Rev.Lett.
Source Genre: Journal
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Publ. Info: -
Pages: - Volume / Issue: 125 Sequence Number: - Start / End Page: 264801 Identifier: -