Thermal moderator-reflector assembly for HBS Ulrich Rücker, Ivan Pechenizkiy, Jingjing Li, Egor Vezhlev, Paul Zakalek, Jörg Voigt, Thomas Gutberlet and Thomas Brückel EPJ Web Conf., 298 (2024) 05008 Published online: 27 June 2024 DOI: 10.1051/epjconf/202429805008