A neutron pinhole camera for PF-24 source: Conceptual design and optimization J. Bielecki, A. Wójcik-Gargula, U. Wiacek, M. Scholz, A. Igielski, K. Drozdowicz and U. Woźnicka Eur. Phys. J. Plus, 130 7 (2015) 145 Published online: 23 July 2015 DOI: 10.1140/epjp/i2015-15145-x