40 kA Superconducting DC Transformer for the FRESCA test station

This note presents the superconducting transformer that is now operated on the FRESCA test station. It is divided in two parts: part 1 from page 1 to 30 is the note itself, part 2 from page 31 to the end is annexes. After an introduction of the objectives and functioning of the superconducting transformer, the note describes the sample insert that holds the transformer, its current regulation system ant its protection system. The conclusion finally gives the performances of the transformer (cryogenic aspects as well as measurement accuracy).