Speaker
Description
The using of indirect cooling cryogenic system based on cryocoolers for superconducting insertion devices (wigglers and undulators) gives opportunity, in contrast to magnets immersed into liquid helium, to reduce the size of the magnetic gap due to the removal from it the walls of the helium vessel and increase the magnitude of the magnetic field. To increase the cooling efficiency of such a magnet, which is in vacuum and does not have direct thermal contact with cryogenic liquids, the heat pipes of siphon type filled by nitrogen and helium is used as the heat conductors for connecting of superconducting magnet with cryocoolers stages. The article describes the principle of operation, design and application features of the heat pipes on several indirectly cooled superconducting insertion devices created in BINP.
