31 July 2016 to 5 August 2016
Gaylord Hotel and Conference Center
US/Eastern timezone

Multi-GeV scale electron acceleration with self guided laser wakefield accelerators

2 Aug 2016, 10:50
20m
Woodrow Wilson CD (Gaylord Hotel)

Woodrow Wilson CD

Gaylord Hotel

Oral Working Group 1 WG1

Speaker

Mr. Kristjan Poder (Imperial College London)

Abstract

Recent experimental electron acceleration results from the 300 TW Gemini laser are presented. Employing an extended focussing geometry increased single stage energy gains beyond 2 GeV. High laser to electron beam conversion efficiencies are implied from charge measurements. The use of an adaptive length gas cell allowed peak acceleration gradients in excess of 350 GV/m to be measured, yielding multi-GeV electron beams in 1 cm long plasma targets.

Summary

Results from recent experiments performed at the 300 TW Gemini laser at Rutherford Appleton Laboratory are reported. The use of a longer focal length main focussing optic with a gas cell allowed single stage electron energy gains from to be extended beyond 2 GeV. High bunch charges of order of hundreds of pC were measured. These self injected, high energy and high charge electron beams also constitute high laser to beam energy conversion efficiencies. Employing a variable length gas cell allowed detailed measurements of electron beam energy evolution dynamics. Peak accelerating gradients in excess of 350 GeV/m were inferred from gas cell length scans.

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Primary author

Mr. Kristjan Poder (Imperial College London)

Co-authors

Dr. Aakash Sahai (Imperial College London) Dr. Charlotte Palmer (DESY) Dr. Christos Kamperidis (Imperial College London) Dr. Daniel Symes (STFC) Dr. Gianluca Sarri (Queen's University Belfast) Dr. Jason Cole (Imperial College London) Mr. Jonathan Warwick (Queen's University Belfast) Mr. Jonathan Wood (Imperial College London) Dr. Nelson Carreira-Lopes (Imperial College London) Ms. Olena Kononenko (DESY) Dr. Peta Foster (STFC) Dr. Stuart Mangles (Imperial College London) Prof. Zulfikar Najmudin (Imperial College London)

Presentation Materials

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