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Development of a superconducting undulator cryostat based on the thermosiphon effect.
- Source :
-
International Journal of Refrigeration . Aug2024, Vol. 164, p86-94. 9p. - Publication Year :
- 2024
-
Abstract
- As a specific device for light production, undulators have been researched and developed since the third generation of synchrotron photon sources. Nowadays, superconducting undulators become a research hotspot. However, the cryostat, which is used to create a liquid helium temperature environment, often causes the failure of the superconducting undulator. In this paper, a cryostat for a superconducting undulator is designed and investigated. First, a new refrigeration distribution is proposed that can provide more excess cooling capacity at 4.2 K temperature. For the cooling of the superconducting magnet, a liquid helium circulation loop based on the thermosiphon effect is designed, which has no pump or any other moving parts. Next, based on high-temperature superconducting technology, six binary current leads are used to decrease the heat load. The beam chamber is cooled below 20 K to reduce possible effect on the magnet. In addition, for the tubes that connect the 4.2 K helium tank to the room temperature component, the thermoacoustic oscillation is studied. In the experiment, the superconducting magnet could be cooled and maintained at 4.2 K depending on the thermosiphon loop. No helium was discharged when the magnet went through a quench which generated large heat in a short time. There was no liquid helium consumption and the excess cooling capacity reached 2.2 W. The maximum magnet current is as high as 470 A. This study can provide a valuable reference for the development of superconducting undulator cryostats. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01407007
- Volume :
- 164
- Database :
- Academic Search Index
- Journal :
- International Journal of Refrigeration
- Publication Type :
- Academic Journal
- Accession number :
- 177847591
- Full Text :
- https://doi.org/10.1016/j.ijrefrig.2024.05.009