On the production of flat electron bunches for laser wakefield acceleration

Journal Article · Thu Nov 15 04:00:00 EST 2007 · Journal of Experimental and Theoretical Physics

DOI:https://doi.org/10.1134/S1063776107110064· OSTI ID:21075668

Kando, M; Fukuda, Y; Kotaki, H; Koga, J; Bulanov, S V; Tajima, T ^[1]; Chao, A; Pitthan, R ^[2]; Schuler, K -P ^[3]; Nemoto, K ^[4]

---

1. Japan Atomic Energy Agency, Kansai Photon Science Institute (Japan)
2. Stanford Linear Accelerator Center (United States)
3. Deutsches Elektronen-Synchrotron, DESY (Germany)
4. 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, Journal Name: Journal of Experimental and Theoretical Physics Journal Issue: 5 Vol. 105; ISSN JTPHES; ISSN 1063-7761
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATION
AMPLITUDES
ASYMMETRY
BEAM EMITTANCE
BEAM INJECTION
BETATRON OSCILLATIONS
ELECTRON BEAMS
ELECTRONS
FOCUSING
GEOMETRY
ION BEAMS
LASERS
LINEAR COLLIDERS
PLASMA
POLARIZATION
PULSES
RELATIVISTIC RANGE
SIMULATION
THREE-DIMENSIONAL CALCULATIONS
WAKEFIELD ACCELERATORS