PLASMONX combining high energy electron bunches and superintense
PLASMONX : combining high energy electron bunches and superintense laser pulses in plasmas Danilo Giulietti Dipartimento di Fisica dell’Università and Sezione INFN, Pisa, Italy PARIS, 8 -10 / 06 / 05 HEEAUP 2005
The Frascati Laser for Acceleration and Multidisciplinary Experiments (FLAME) PARIS, 8 -10 / 06 / 05 HEEAUP 2005
PARIS, 8 -10 / 06 / 05 HEEAUP 2005
FLAME laser system: main parameters PARIS, 8 -10 / 06 / 05 HEEAUP 2005
OPCPA Technique PARIS, 8 -10 / 06 / 05 HEEAUP 2005
First two amplifier stages of the PLASMONX laser designed to reduce the ASE level PARIS, 8 -10 / 06 / 05 HEEAUP 2005
FLAME parameters after the upgrade with the OPCPA technique PARIS, 8 -10 / 06 / 05 HEEAUP 2005
SPARC photo-injector and SASE-FEL experiment with additional double dog-leg beam line PARIS, 8 -10 / 06 / 05 HEEAUP 2005
Main parameters of the additional beam line @ SPARC in the required working configurations PARIS, 8 -10 / 06 / 05 HEEAUP 2005
Beam density distribution in (x, y) along the beam line PARIS, 8 -10 / 06 / 05 HEEAUP 2005
Experimental setup for LWFA acceleration of externally injected electrons in a gas-jet plasma PARIS, 8 -10 / 06 / 05 HEEAUP 2005
LWFA relevant parameters for 4 J, 50 fs laser pulse; 50 m beam waist (ZR = 1 cm) PARIS, 8 -10 / 06 / 05 HEEAUP 2005
Experimental set-up for the generation of tunable X-ray radiation via Thomson scattering of optical photons by relativistic electron bunches PARIS, 8 -10 / 06 / 05 HEEAUP 2005
Angular and spectral distribution of the TS radiation in the case of an unguided 3 ps laser pulse (12. 5 µm beam waist) PARIS, 8 -10 / 06 / 05 HEEAUP 2005
Schedule of the planned PLASMONX activity
MODULATOR HALL 15 m CONTROL ROOM 36 m ACCELERATOR HALL SPARC BUILDINGS PARIS, 8 -10 / 06 / 05 HEEAUP 2005
HILL@LNF (High-Intensity Laser Laboratory @ LNF) S HILL area N HILL location
HILL@LNF (High-Intensity Laser Laboratory @ LNF) HILL preliminary plan
Synchronisation & seeding uncompressed pulse vacuum compressor acceleration chamber detectors area control & data LINAC UNDULATOR PARIS, 8 -10 / 06 / 05 HEEAUP 2005
At the same time the experimental activity is developing on different topics… PARIS, 8 -10 / 06 / 05 HEEAUP 2005
CEA 2004 PARIS, 8 -10 / 06 / 05 HEEAUP 2005
LASER GUIDING • Hollow fibers: single shot • Relativistic Self-Focusing P(GW) > 17 nc/ne : I, dne, Lacc increase, uncontrolled • Pre-formed channel: Lacc increase PARIS, 8 -10 / 06 / 05 HEEAUP 2005
PRE-FORMED CHANNEL • The laser pulse propagates in a plasma channel acting as a focusing lens that counter-balances the diffraction effects. For the optimal channel shape, laser pulses have been guided over distances exceeding 10 ZR. n Dn rch • To pre-form the channel there at least two experimental methods: 1. Gas discharge ; 2. Self focusing of nanosecond pulses in gas-jet PARIS, 8 -10 / 06 / 05 HEEAUP 2005
IMPROVING THE ENERGY SPREAD • Controlled injection • Injecting electron from a LINAC PARIS, 8 -10 / 06 / 05 HEEAUP 2005
Controlled injection of electrons in Langmuir waves: a compact way of producing monoenergetic electron bunches (from an original idea of S. Bulanov et al PRL 1998) Electronic density simulated with POLLUX code Heating pulse Main pulse Heating pulse e-beam Double foil target P. Tomassini, M. Galimberti, A. Giulietti, D. Giulietti, L. A. Gizzi, L. Labate, F. Pegoraro, Production oh high quality …PRST, 6, 121301 (2003).
PROTON BEAMS IN LASER-MATTER INTERACTIONS After the production of the energetic electron beam, the Coulomb force accelerates protons and ions up to energies of 10 -50 Me. V PARIS, 8 -10 / 06 / 05 HEEAUP 2005
Experimental set-up Interaction chamber Off axis Parabola Target Mirror lactice detector 10 -4 mbar lattice laser l=1, 053 mm IL~5 x 1019 Wcm-2
Spectral distributions 0 n°prot. Me. V-1 sr-1 E 3 = 13. 2 Me. V E 6 = 19. 5 Me. V 2. 2 x 1011 Typical anular structures E 1 = 10. 3 Me. V E 2 = 11. 8 Me. V E 4 = 14. 7 Me. V E 5 = 17. 3 Me. V E 7 = 21. 1 Me. V E 8 = 23 Me. V Angular divergence decreases as proton energy increases. E. Breschi et al , Nucl. Instr. Meth. A, 522, 190, 2004.
PARIS, 8 -10 / 06 / 05 HEEAUP 2005 hard job to do ! …in conclusion,
- Slides: 30