1–6 Jun 2025
Taipei International Convention Center (TICC)
Asia/Taipei timezone

First measurements of electron acceleration with plasma density steps at AWAKE

THAD2
5 Jun 2025, 09:50
20m
Hall 101 (TICC)

Hall 101

TICC

Contributed Oral Presentation MC3.A22 Plasma Wakefield Acceleration THAD:Novel Particle Sources and Acceleration Techniques (Contributed)

Speaker

Fern Pannell (University College London)

Description

The Advanced Wakefield (AWAKE) experiment is a proof-of-principle accelerator facility at CERN (Geneva, Switzerland). Proton bunches from the CERN Super Proton Synchrotron are used to drive wakefields in 10 metres of laser-ionised rubidium plasma, over which externally injected 19 MeV electrons are accelerated. Run 1 of AWAKE successfully demonstrated the self-modulation of the long proton bunch, and the acceleration of electrons to 2 GeV. Upgrades to the rubidium vapour source during Run 2 have enabled the use of a plasma density step, and variation of the plasma length through the insertion of foils along the source to dump the laser pulse. When placed suitably within the development of self-modulation, the density step is expected to preserve the wakefield amplitude, and therefore accelerating gradient, over longer distances than with uniform plasma. This work presents the first measurements of electron acceleration with a density step, studied as a function of the plasma length.

Region represented Europe
Paper preparation format LaTeX

Author

Fern Pannell (University College London)

Co-authors

Nikita van Gils (European Organization for Nuclear Research) Vittorio Bencini (European Organization for Nuclear Research) Michele Bergamaschi (Max Planck Institute for Physics) Arthur Clairembaud (Max Planck Institute for Physics) David Cooke (University College London) Edda Gschwendtner (European Organization for Nuclear Research) Helena Jaworska (University of Groningen) Jan Mezger (Max Planck Institute for Physics) Patric Muggli (Max Planck Institute for Physics) Lucas Ranc (Max Planck Institute for Physics) Marlene Turner (European Organization for Nuclear Research) Matthew Wing (University College London) Giovanni Zevi Della Porta (European Organization for Nuclear Research)

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