High energy electrons from interaction with a structured gas-jet at FLAME

Anno: 2014

Autori: Grittani G., Anania M.P., Gatti G., Giulietti D., Kando M., Krus M., Labate L., Levato T., Londrillo P., Rossi F., Gizzi LA.

Affiliazione autori: ILIL, Istituto Nazionale di Ottica, CNR, Via G. Moruzzi 1, Pisa, Italy; INFN Sezione di Pisa, Largo Pontecorvo 3, 56127 Pisa, Italy; Dipartimento di Fisica E. Fermi, Universitá di Pisa, Italy; Laboratori Nazionali di Frascati, INFN, Via E. Fermi, Frascati, Italy; Japan Atomic Energy Agency (JAEA), Kyoto, Japan; Institute of Physics of the ASCR, ELI-Beamlines project, Na Slovance 2, 18221 Prague, Czech Republic; Universitá di Bologna e sez. INFN, Bologna, Italy

Abstract: In this paper we analyze the properties of the electron bunches produced in a laser plasma acceleration experiment using a 10 mm helium gas jet with a longitudinal density profile characterized by a double peak structure. Data were taken at three different gas jet backing pressures of 5, 8 and 15 bars, corresponding to plasma densities of 1.2-3.6 x 10(19) cm(-3) in the peaks and 3.5-10 x 10(18) cm(-3) in the central plateau. The highest energy peak is recorded at more than 450 MeV, with average energies between 80 and 180 MeV. Bunch divergence and pointing stability have been measured and are found to be very sensitive to the density. Fully 3D PIC numerical simulations confirm that laser intensity and plasma density of our set up are in the range where electron acceleration takes place by self-injection in a bubble-like structure. Analysis shows that after the first density peak, accelerated electrons propagate through the plateau and the second density peak without the driver, undergoing non-linear interaction with the background plasma. (C) 2013 Elsevier B.V. All rights reserved.


Volume: 740      Da Pagina: 257  A: 265

Maggiori informazioni: The Self-Injection Test Experiment (SITE) and the gamma-ray Emitter from Self-Injected Thomson Scattering (gamma-RESIST) are funded by INFN through the CN5. This work was carried out in collaboration with the High Field Photonics Unit at INO-CNR (MD.P03.034) and was partially funded by CNR through the ELI-Italy project. The work has been partially supported by the EU Commission in the Seventh Framework Program, Grant Agreement 312453 – EuCARD-2. We acknowledge the CINECA Grant N. HP10CZX6QK and IscrC_JA-BonB_E, 2013 for the availability of high performance computing resources and support. We acknowledge the support of INFN APE project for the availability of the QUonG cluster.
Parole chiavi: Beam-plasma interactions; Laser-plasma acceleration; Ultra-intense laser-matter interaction
DOI: 10.1016/j.nima.2013.10.082

Citazioni: 9
dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-06-23
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