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

Study of electron density in capillary discharge plasma for laser plasma accelerator

TUPM097
3 Jun 2025, 16:00
2h
Exhibiton Hall A _Magpie (TWTC)

Exhibiton Hall A _Magpie

TWTC

Poster Presentation MC3.A22 Plasma Wakefield Acceleration Tuesday Poster Session

Speaker

Alex Whitehead (Extreme Light Infrastructure Beamlines)

Description

Laser-plasma accelerators have demonstrated the ability to accelerate high-energy electrons but require improved beam stability and repeatability for practical applications. Pre-formed plasma channels enhance the stability in Laser-Wakefield Accelerators by maintaining laser focus over longer distances, increasing energy transfer efficiency. The characteristics of such channels are highly dependent on capillary geometry, gas parameters, discharge setup, and repetition rate. This study investigates the electron density profiles in plasma from gas-filled capillary discharges. Using interferometry and Stark broadening, we measured profiles under varying conditions, achieving densities of (2-6)×10^18 cm^-3. In this presentation, we showcase the stability and uniformity of the plasma, highlighting its capability to preserve beam quality in high-energy, high-repetition-rate applications. This type of plasma source is a crucial technology for the plasma accelerator-based Free Electron Laser developed at ELI-ERIC as well as for the EuPRAXIA project. Also, we discuss the conceptual design of plasma diagnostics for providing 'real-time' information in high-repetition-rate applications.

Region represented Europe
Paper preparation format LaTeX

Author

Alex Whitehead (Extreme Light Infrastructure Beamlines)

Co-authors

Dr Alexander Molodozhentsev (Extreme Light Infrastructure Beamlines) Alexandr Jancarek (Extreme Light Infrastructure Beamlines) Mihail Miceski (Extreme Light Infrastructure Beamlines) Pavel Sasorov (Institute for Theoretical and Experimental Physics) Petr Zimmermann (ELI Beamlines Czech Republic) Sebastian Niekrasz (Extreme Light Infrastructure Beamlines) Srimanta Maity (Extreme Light Infrastructure Beamlines) Tyler Green (ELI Beamlines Czech Republic)

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