Conceptual design of supermirror polarizers at the European Spallation Source Damián Martín Rodríguez, Peter Willendrup, Wai-Tung Lee, Alex Backs, Félix Jiménez Villacorta, Rasmus Toft-Petersen and Manuel Morgano EPJ Web Conf., 286 (2023) 03008 Published online: 09 October 2023 DOI: 10.1051/epjconf/202328603008