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Effect of contrast ratio on electron beam stability in laser wakefield acceleration experiments

Författare

Summary, in English

Laser wakefield accelerators offer the possibility of compact electron acceleration. However one of the key outstanding issues with the results reported to date is the electron beam stability. Experiments on two laser systems reveal that the contrast ratio between the ASE pedestal and main pulse is an important factor in determining the quality of the electron beam. With a high contrast ratio (10^8) the electron beam profile is a well collimated single beam having a low pointing instability (<10 mrad rms). With a lower contrast (10^6) the beam profile contains multiple beamlets which exhibit a large

pointing instability (~50 mrad rms). Ahigh contrast ratio not only improves the beam pointing stability (~6 mrad) but also stabilizes the electron beam energy reproducibility (5%).

Avdelning/ar

Publiceringsår

2006

Språk

Engelska

Sidor

83-90

Publikation/Tidskrift/Serie

Plasma Physics and Controlled Fusion

Volym

48

Issue

12B

Dokumenttyp

Artikel i tidskrift

Förlag

IOP Publishing

Ämne

  • Atom and Molecular Physics and Optics

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 0741-3335