Radiochromic film diagnostics for laser-driven ion beams

J. Kaufman; Daniele Margarone; Giacomo Candiano; I Jong Kim; Tae Moon Jeong; Jan Pšikal; F. Romano; P. Cirrone; V. Scuderi; Georg Korn

doi:10.1117/12.2179354

1 May 2015 Radiochromic film diagnostics for laser-driven ion beams

J. Kaufman, Daniele Margarone, Giacomo Candiano, I Jong Kim, Tae Moon Jeong, Jan Pšikal, F. Romano, P. Cirrone, V. Scuderi, Georg Korn

Author Affiliations +

Proceedings Volume 9515, Research Using Extreme Light: Entering New Frontiers with Petawatt-Class Lasers II; 95151J (2015) https://doi.org/10.1117/12.2179354
Event: SPIE Optics + Optoelectronics, 2015, Prague, Czech Republic

Abstract

Radiochromic film (RCF) based multichannel diagnostics utilizes the concept of a stack detector comprised of alternating layers of RCFs and shielding aluminium layers. An algorithm based on SRIM simulations is used to correct the accumulated dose. Among the standard information that can be obtained is the maximum ion energy and to some extend the beam energy spectrum. The main area where this detector shines though is the geometrical characterization of the beam. Whereas other detectors such as Thomson parabola spectrometer or Faraday cups detect only a fraction of the outburst cone, the RCF stack placed right behind the target absorbs the whole beam. A complete 2D and to some extend 3D imprint of the ion beam allows us to determine parameters such as divergence or beam center shift with respect to the target normal. The obvious drawback of such diagnostics is its invasive character. But considering that only a few successful shots (2-3) are needed per one kind of target to perform the analysis, the drawbacks are acceptable. In this work, we present results obtained with the RCF diagnostics using both conventional accelerators and laser-driven ion beams during 2 experimental campaigns.

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J. Kaufman, Daniele Margarone, Giacomo Candiano, I Jong Kim, Tae Moon Jeong, Jan Pšikal, F. Romano, P. Cirrone, V. Scuderi, and Georg Korn "Radiochromic film diagnostics for laser-driven ion beams", Proc. SPIE 9515, Research Using Extreme Light: Entering New Frontiers with Petawatt-Class Lasers II, 95151J (1 May 2015); https://doi.org/10.1117/12.2179354

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