English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Seeded self-modulation in a plasma can transform a long proton beam into atrain of micro-bunches that can excite a strong wakefield over long distances,but this needs the plasma to have a certain density profile with a short-scaleramp up. For the parameters of the AWAKE experiment at CERN, we numericallystudy which density profiles are optimal if the self-modulation is seeded by ashort electron bunch. With the optimal profiles, it is possible to "freeze" thewakefield at approximately half the wavebreaking level. High-energy electronbunches (160 MeV) are less efficient seeds than low-energy ones (18 MeV),because the wakefield of the former lasts longer than necessary for efficientseeding.

Proton beam self-modulation seeded by electron bunch in plasma with density ramp