1. European Spallation Source ERIC, Box 176, SE-221 00, Lund, Sweden, URL https://europeanspallationsource.se.
2. The beam delivery system of the European Spallation Source;Thomsen,2016
3. Proton beam imaging options for the ESS target;Göhran,2014
4. Optical system for ESS target protection;Donna,2015
5. Optical system design for the ESS proton beam and target diagnostics;Ibison,2016