caa a22 4500 445867027 CHVBK 20180317145501.0 cr unu---uuuuu 170323e20111201xx s 000 0 eng 10.1140/epjd/e2011-20366-x doi (NATIONALLICENCE)springer-10.1140/epjd/e2011-20366-x Stochastic homogenization of the laser intensity to improve the irradiation uniformity of capsules directly driven by thousands laser beams [Elektronische Daten] [M. Temporal, B. Canaud] Illumination uniformity of a spherical capsule directly driven by laser beams has been assessed numerically. Laser facilities characterized by N D =12, 20, 24, 32, 48 and 60 directions of irradiation with associated a single laser beam or a bundle of N B laser beams have been considered. The laser beam intensity profile is assumed super-Gaussian and the calculations take into account beam imperfections as power imbalance and pointing errors. The optimum laser intensity profile, which minimizes the root-mean-square deviation of the capsule illumination, depends on the values of the beam imperfections. Assuming that the N B beams are statistically independents is found that they provide a stochastic homogenization of the laser intensity associated to the whole bundle, reducing the errors associated to the whole bundle by the factor \hbox{$1/N_{B}^{1{/}2}$} 1 / N B 1 / 2 , which in turn improves the illumination uniformity of the capsule. Moreover, it is found that the uniformity of the irradiation is almost the same for all facilities and only depends on the total number of laser beams N tot =N D ×N B . EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg, 2011 Temporal M. Universidad Politécnica de Madrid, 28040, Madrid, Spain aut Canaud B. CEA, DAM, DIF, 91297, Arpajon, France aut The European Physical Journal D Springer-Verlag 65/3(2011-12-01), 447-451 1434-6060 65:3<447 2011 65 10053 https://doi.org/10.1140/epjd/e2011-20366-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1140/epjd/e2011-20366-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Temporal M. Universidad Politécnica de Madrid, 28040, Madrid, Spain aut NATIONALLICENCE 700 1- Canaud B. CEA, DAM, DIF, 91297, Arpajon, France aut NATIONALLICENCE 773 0- The European Physical Journal D Springer-Verlag 65/3(2011-12-01), 447-451 1434-6060 65:3<447 2011 65 10053 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer