newsletter september 2021 BOLOMETERS Liberty bolometers design and assembly process At the beginning of 2021, European Spallation Source Bilbao (ESS Bilbao), as part of a team led by ALTER TE CHNOLOGY TÜV NORD (ATN) and also involving Stu diecentrum for Kernenergie Centre d’Etudes de l’Ener gie Nucléaire (SCK CEN) as third technical parties, were awarded a contract by Fusion for Energy (F4E), the EU organisation responsible for Europe’s contribution to ITER, for the irradiation testing of bolometer-sensor prototypes (F4E-OPE-1084 lot 1). The team formed by ESS Bilbao, ATN and SCK CEN cover all the capabilities needed:: •ATN will act as prime contractor and will take over the activities related to test rig commissioning, test rig manufacturing, data acquisition system, accep tance tests of bolometers, reference data measure ments, and management and reporting. •SCK CEN is the owner of the reactor BR2 that will be used and will be in charge of such activities as irradiation tests (radiation, online tests, dosimetry, storage and disposal of activated materials) and port • ESS Bilbao will be in charge of the development of irradiation examination tests, as well as giving su the test rig: design, modelling and manufacturing pport to ATN throughout the project. engineering. 17