  The Gersemi cryogenic test bench, installed at FREIA laboratory at Uppsala
University, was used for the first time in 2021 to power a superconducting
magnet. As part of the HL-LHC program, this cryostat offers an operating
temperature between 4.2K and 1.9K. Its satellite equipment such as power
converters and the acquisition system allow two superconducting magnet coils to
be powered up to 2 kA and provide magnet protection through a robust quench
detection and two energy extraction units. This report describes Gersemi's
first cryogenic operational experiment and the safety strategy to ensure magnet
integrity during operation.
