Paper | Title | Page |
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TUPE39 |
Feasibility of a 4.5-T Cryogenic Permanent-Magnet Wavelength Shifter | |
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Funding: Work supported by the Ministry of Science and Technology, ROC under Contract No. MOST 103-2221-E-213-001-MY2 A three-pole wavelength shifter with a cryogenic permanent magnet is designed to extend the critical photon energy in a 3-GeV storage ring to 27-keV Xrays. The cryogenic wavelength shifter has a PrFeB permanent magnet and a vanadium-cobalt-steel (Permendur) pole to produce a magnetic field of flux density 4.5 T at fixed gap 5 mm. The magnet structure is optimized to prevent irreversible demagnetization of the permanent magnet near 300 K. A 77-K cryo-cooler is used to cool the magnets and to maintain the magnets at a uniform temperature, 77 K, in the vacuum vessel. This work describes the advanced design of the magnetic field and the simulations of the cooling temperature for the compact wavelength-shifter magnet. |
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Poster TUPE39 [1.949 MB] | ||
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