Superfluid Helium Cryostat for Sensitive Elements Cooling

The objective of the research is super fluid helium cryostat development for navigational sensitive elements (SE) cooling at the temperature of 2 K. The peculiarities of the given cryostat are the long-term independent operating mode, the high stability of the SE unit and the high accuracy and stability of super fluid helium temperature maintenance. The SE unit high stability is achieved by the construction. The long-term independent operating mode is carried out by means of helium vapors liquefier-recondensers. High accuracy and stability of superfluid helium temperature maintenance is realized with the help of the modern and advanced thermometry and proportional-integral-differential control.