Very low helium consumption (<4 litres / 48h).
LN2 reservoir (13.3 liters) surrounds the LHe dewar (4.3 liters).
Additional intermediate He-gascooled radiation shield to improve the thermal isolation.
Eddy current vibration damping of the pendulum motion of the inner cryostat.
STM is completely isolated (thermally and electrically) when tunneling.
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