X-ray Emission from Electron Betatron Motion in a Laser-Plasma Accelerator
- LOASIS Program at LBNL, Berkeley, CA 94720 (United States)
- EMMI at GSI, Darmstadt, 64291 (Germany)
- APIX at GSI, Darmstadt, 64291 (Germany)
Single-shot x-ray spectra from electron bunches produced by a laser-plasma wakefield accelerator (LPA) were measured using a photon-counting single-shot pixelated Silicon-based detector, providing for the first time single-shot direct spectra without assumptions required by filter based techniques. In addition, the electron bunch source size was measured by imaging a wire target, demonstrating few micron source size and stability. X-rays are generated when trapped electrons oscillate in the focusing field of the wake trailing the driver laser pulse. In addition to improving understanding of bunch emittance and wake structure, this provides a broadband, synchronized femtosecond source of keV x-rays. Electron bunch spectra and divergence were measured simultaneously and preliminary analysis shows correlation between x-ray and electron spectra. Bremsstrahlung background was managed using shielding and magnetic diversion.
- OSTI ID:
- 21428759
- Journal Information:
- AIP Conference Proceedings, Vol. 1299, Issue 1; Conference: 14. advanced accelerator concepts workshop, Annapolis, MD (United States), 13-19 Jun 2010; Other Information: DOI: 10.1063/1.3520302; (c) 2010 American Institute of Physics; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ABLATION
BEAM BUNCHING
BEAM-PLASMA SYSTEMS
BETATRONS
BREMSSTRAHLUNG
CORRELATIONS
ELECTRON BEAMS
ELECTRON SPECTRA
KEV RANGE
LASERS
PHOTON EMISSION
PLASMA
PLASMA GUNS
PULSES
SI SEMICONDUCTOR DETECTORS
TRAPPED ELECTRONS
WAKEFIELD ACCELERATORS
X-RAY SPECTRA
ACCELERATORS
BEAM DYNAMICS
BEAMS
CYCLIC ACCELERATORS
DYNAMICS
ELECTROMAGNETIC RADIATION
ELECTRONS
ELEMENTARY PARTICLES
EMISSION
ENERGY RANGE
FERMIONS
LEPTON BEAMS
LEPTONS
LINEAR ACCELERATORS
MEASURING INSTRUMENTS
MECHANICS
PARTICLE BEAMS
RADIATION DETECTORS
RADIATIONS
SEMICONDUCTOR DETECTORS
SPECTRA