Nano and micro structured targets to modulate the spatial profile of laser driven proton beams
Paper in proceedings, 2017

Nano and micro structured thin (μ m-scale) foils were designed, fabricated and irradiated with the high intensity laser system operating at LLC (Lund Laser Centre, Sweden) in order to systematically study and improve the main proton beam parameters. Nano-spheres deposited on the front (laser irradiated) surface of a flat Mylar foil enabled a small enhancement of the maximum energy and number of the accelerated protons. Nano-spheres on the rear side allowed to modify the proton beam spatial profile. In particular, with nanospheres deposited on the rear of the target, the proton beam spatial homogeneity was clearly enhanced. Silicon nitride thin foils having micro grating structures (with different step dimensions) on the rear surface were also used as targets to influence the divergence of the proton beam and drastically change its shape through a sort of stretching effect. The target fabrication process used for the different target types is described, and representative experimental results are shown and discussed along with supporting 3D particle-in-cell simulations. © 2017 IOP Publishing Ltd and Sissa Medialab srl.

Beam dynamics

Accelerator Applications

Author

L. Giuffrida

Czech Academy of Sciences

Krister Svensson

Lund University

J. Psikal

Czech Academy of Sciences

Czech Technical University in Prague

D. Margarone

Czech Academy of Sciences

P. Lutoslawski

Czech Academy of Sciences

V. Scuderi

INFN - Laboratori Nazionali del Sud

Czech Academy of Sciences

G. Milluzzo

INFN - Laboratori Nazionali del Sud

J. Kaufman

Czech Academy of Sciences

T. Wiste

Czech Academy of Sciences

M. Dalui

Lund University

H. Ekerfelt

Lund University

I. G. Gonzalez

Lund University

O. Lundh

Lund University

A. Persson

Lund University

A. Picciotto

Fondazione Bruno Kessler (FBK)

M. Crivellari

Fondazione Bruno Kessler (FBK)

A. Bagolini

Fondazione Bruno Kessler (FBK)

P. Bellutti

Fondazione Bruno Kessler (FBK)

Joel Magnusson

Chalmers, Physics, Theoretical Physics

Arkady Gonoskov

Chalmers, Physics, Theoretical Physics

L. Klimsa

Czech Academy of Sciences

J. Kopecek

Czech Academy of Sciences

T. Lastovicka

Czech Academy of Sciences

G. A. P. Cirrone

INFN - Laboratori Nazionali del Sud

C.G. Wahlström

Lund University

G. Korn

Czech Academy of Sciences

Journal of Instrumentation

1748-0221 (ISSN)

Vol. 12 3 article no C03040 -

Subject Categories

Physical Sciences

DOI

10.1088/1748-0221/12/03/C03040

More information

Latest update

12/9/2020