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

Narrow bandwidth Thomson photon source development using Laser-Plasma Accelerators

2 Aug 2016, 11:15
15m
Woodrow Wilson B (Gaylord Hotel)

Woodrow Wilson B

Gaylord Hotel

Oral Working Group 7 WG7

Speaker

Dr. Cameron Geddes (LBNL)

Abstract

Compact Thomson photon sources at MeV energies are enabled by Laser-Plasma Accelerators (LPAs). Recent LPA experiments have demonstrated performance suitable for such a source, and a facility is being constructed. Simulations are presented on production of controllable narrow bandwidth sources using the beam and plasma capabilities of LPAs. The sensitivity of the photon distribution to electron beam parameters also makes such sources a powerful nondestructive diagnostic of electron beam properties and their evolution.

Summary

Compact, high-quality photon sources at MeV energies can be enabled by Laser-Plasma Accelerators (LPAs). Recent LPA experiments have demonstrated performance suitable for such a source, and a facility is being constructed. Simulations are presented on production of controllable narrow bandwidth sources using the beam and plasma capabilities of LPAs. An independent scattering laser, combined with appropriate pulse shaping and laser guiding is important to realize high photon yield and to reduce scattering laser size and/or electron beam current requirements to scale compatible with the LPA. Plasma optics are described to tailor beam divergence in cm-scale distances, reducing photon source bandwidth. The LPA can further be used to de-accelerate the electron beam after photon production to reduce undesired radiation. Combination of laser driven and beam driven deceleration is presented to reduce residual beam energy, as is important for a laboratory or field operable source. Design of experiments and laser capabilities to combine these elements will be presented, towards a compact photon source system. Such sources have the potential to enable applications currently restricted by source size, including nuclear nonproliferation. The sensitivity of the Thomson scattering photon distribution to electron beam parameters also makes such sources a powerful nondestructive diagnostic of electron beam properties and their evolution as the beam propagates through the plasma important to facilitate development of LPAs.

Are you a student? No

Primary author

Dr. Cameron Geddes (LBNL)

Co-authors

Dr. Alex Friedman (LLNL) Dr. Bernhard Ludewigt (LBNL) Dr. Brian Quiter (LBNL) Carl Schroeder (Lawrence Berkeley National Laboratory) Dr. Carlo Benedetti (Lawrence Berkeley National Laboratory) Dr. Csaba Toth (LBNL) Dr. David Chichester (INL) Dr. David Grote (LLNL) Dr. Eric Esarey (LBNL) Mr. Hai-En Tsai (Lawrence Berkeley National Lab) Dr. Jean-Luc Vay (LBNL) Dr. Jeroen van Tilborg (LBNL) Dr. Kai Vetter (LBNL) Kei Nakamura (Lawrence Berkeley National Laboratory) Ms. Kelly Swanson (Lawrence Berkeley National Laboratory) Dr. Paul Barton (LBNL) Dr. Sven Steinke (LBNL) Dr. Wim Leemans (Lawrence Berkeley National Laboratory) Mr. Yigong Zhang (LBNL)

Presentation Materials

Your browser is out of date!

Update your browser to view this website correctly. Update my browser now

×