The development of the flat moderator concept at ESS recently opened up the possibility that a single flat moderator above the target could serve all the scattering instruments, that rely on high brightness. This would allow for the introduction of a fundamentally different moderator below the target for the complementary needs of certain fundamental physics experiments. To facilitate experiments depending on the total number of neutrons in a sizable beam, the option of a voluminous D2 moderator, in a large cross-section extraction guide is discussed and its neutronic performance is assessed.
@article{arxiv.1401.6003,
title = {Voluminous D2 source for intense cold neutron beam production at the ESS},
author = {Esben Klinkby and Konstantin Batkov and Ferenc Mezei and Troels Schønfeldt and Alan Takibayev and Luca Zanini},
journal= {arXiv preprint arXiv:1401.6003},
year = {2014}
}