Cool down time from RT to 4.3 K?

How fast can a probe station cool down from room temperature to 4.3 K, and then how fast does it warm up?

It depends on the probe station and its configured options. In Lake Shore’s flagship station, the CPX, which is a flow station, you actually can go from room temperature down to base temperature in around an hour and 15 minutes. That same station takes approximately 70 minutes to warm back up from the base temperature. The larger systems are going to take a little bit longer. For example, the systems with the integrated vertical field magnets, take a slightly longer to cool down and longer to warm back up again because of the heat capacity of the magnet.