cryogenic actuator

Hello

Í'm looking for an actuator I can use at cryogenic temperatures(15mK)
with a lineair motion of about 0.5 mm.
It has to be a small actuator and has to operate in vacuum too.
It can also be a circular actuator.
So it has to have very small heat dissipation.

thanks Martijn

 

[nevsf]

Try Empire Magnetics. They make cryogenic rotary motors. The lead times are long and they're very expensive, but worth a try if you really need it.