The Axion Longitudinal Plasma Haloscope (ALPHA) experiment reached a milestone on February 24 with the successful installation of a Bluefors helium dilution fridge at the site of the experiment in ...
Dilution refrigeration exploits the entropic cooling effect that arises when a mixture of helium-3 and helium-4 isotopes separates into concentrated and dilute phases at millikelvin temperatures. In ...