Beam-transport optimization for cold-neutron spectrometer Kenji Nakajima, Seiko Ohira-Kawamura, Tatsuya Kikuchi, Ryoichi Kajimoto, Nobuaki Takahashi, Mitsutaka Nakamura, Kazuhiko Soyama and Toyotaka Osakabe EPJ Web of Conferences, 83 (2015) 03011 Published online: 23 January 2015 DOI: 10.1051/epjconf/20158303011