Ultra-Low Emittance Proton Beams From A Laser-Virtual Cathode Plasma Accelerator

Journal Article · Tue Dec 07 00:00:00 EST 2004 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.1842646· OSTI ID:20655309

Fuchs, J ^[1]; Cowan, T E; Ruhl, H; Sentoku, Y; Kemp, A ^[1]; Audebert, P; Gauthier, J -C; Pepin, H ^[2]; Roth, M; Blazevic, A; Brambrink, E; Geissel, M ^[3]; Stephens, R; Barton, I; Kaae, J; Newkirk, A ^[1]; Cobble, J; Fernandez, J C; Letzring, S ^[4]; Hegelich, M ^[5]

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1. General Atomics, San Diego, CA 92121 (United States)
2. Laboratoire pour l'Utilisation des Lasers Intenses, UMR 7605 CNRS-CEA-Ecole Polytechnique-Univ. Paris VI, 91128 Palaiseau (France)
3. Technische Univ. Darmstadt, 64289 Darmstadt (Germany)
4. University of California, Los Alamos National Laboratory, Los Alamos NM 87545 (United States)
5. Max-Planck-Institut fuer Quantenoptik, Garching (Germany); and others

The laminarity of high current multi-MeV proton beams produced by irradiating thin metallic foils with ultra-intense lasers has been measured. For proton energies >10 MeV, the transverse and longitudinal emittance are respectively <0.004 mm-mrad and <10-4 eV-s, i.e. at least 100-fold and may be as much as 104-fold better than conventional accelerators beams. The ion beam source size is measured to be <15 {mu}m (fwhm) for proton energies >10 MeV. Magnetic stripping of the co-moving electrons out of the beam after a few cm of debunching is not observed to induce emittance growth.

• OSTI ID: 20655309
• Journal Information: AIP Conference Proceedings, Vol. 737, Issue 1; Conference: 11. advanced accelerator concepts workshop, Stony Brook, NY (United States), 21-26 Jun 2004; Other Information: DOI: 10.1063/1.1842646; (c) 2004 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
BEAM CURRENTS
BRIGHTNESS
CATHODES
COLLECTIVE ACCELERATORS
ELECTRONS
FOILS
ION BEAMS
LASER-PRODUCED PLASMA
LASER-RADIATION HEATING
LASERS
MEV RANGE 10-100
PLASMA GUNS
PLASMA PRODUCTION
PROTON BEAMS