On the production of flat electron bunches for laser wakefield acceleration
- Japan Atomic Energy Agency, Kansai Photon Science Institute (Japan)
- Stanford Linear Accelerator Center (United States)
- Deutsches Elektronen-Synchrotron, DESY (Germany)
- Central Research Institute of Electric Power Industry (Japan)
We suggest a novel method for the injection of electrons into the acceleration phase of particle accelerators, producing low-emittance beams appropriate even for the demanding high-energy linear collider specifications. We discuss the injection mechanism into the acceleration phase of the wakefield in a plasma behind a high-intensity laser pulse, which takes advantage of the laser polarization and focusing. The scheme uses the structurally stable regime of transverse wakewave breaking, when the electron trajectory self-intersection leads to the formation of a flat electron bunch. As shown in three-dimensional particle-in-cell simulations of the interaction of a laser pulse elongated in the transverse direction with an underdense plasma, the electrons injected via the transverse wakewave breaking and accelerated by the wakewave perform betatron oscillations with different amplitudes and frequencies along the two transverse coordinates. The polarization and focusing geometry lead to a way to produce relativistic electron bunches with an asymmetric emittance (flat beam). An approach for generating flat laser-accelerated ion beams is briefly discussed.
- OSTI ID:
- 21075668
- Journal Information:
- Journal of Experimental and Theoretical Physics, Vol. 105, Issue 5; Other Information: DOI: 10.1134/S1063776107110064; Copyright (c) 2007 Nauka/Interperiodica; Article Copyright (c) 2007 Pleiades Publishing, Inc; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7761
- Country of Publication:
- United States
- Language:
- English
Similar Records
Simulations of laser-wakefield acceleration with external electron-bunch injection for REGAE experiments at DESY
Production of a monoenergetic electron bunch in a self-injected laser-wakefield accelerator