Cryogenic electron spin resonance microcoil board

This PCB is part of a cryogenic electron spin resonance / electron beam experiment. It houses two microcoils (which we tried to manufacture at other PCB manufacturers but they usually turned out to be shorted or had gaps - PCBWays manufacturing capabilities turned out to be way better than the competitors one and worked flawlessly also for finer structures) as well as impedance matching structures and two RF microstrip lines to couple the signal to SMA connectors. In addition the board houses an 0805 PT1000 temperature sensor (two wire configuration) to measure our temperature. The board arrived very quick and properly packaged, the quality of the PCBs was very good as expected from PCBWay. The assembled PCBs very happily survived operation at -196.15 Celsius as well as rapid temperature cycling between -196.15 Celsius and room temperature.