“…The rest of the thermal load from suspension, current lead, thermal radiation, wiring etc is estimated below 1.5 W [20,26,[45][46][47][48]. Take the cryocooler RDK-415D from SHI (Sumitomo Heavy Industries, Ltd) for example, the temperature of the 2nd stage will therefore reach about 5 K at 2.5 W (50 Hz), which is acceptable for the HTS magnet.…”