Small cycle permanent magnet type staggered undulator magnetic circuit
An undulator and small cycle technology, applied in the field of undulators, can solve the problems of high cost and maintenance costs, difficulty, and unstable performance, and achieve the effects of low manufacturing and operating costs, avoiding low temperature conditions, and stable performance.
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Embodiment 1
[0023] Such as figure 1 and figure 2 As shown, a small-period permanent magnet type staggered undulator magnetic circuit includes two permanent magnets facing each other with a certain gap. The permanent magnets are NdFeB permanent magnets, samarium cobalt permanent magnets or ferrite permanent magnets. The permanent magnet can be made of a whole permanent magnet block as required, or it can be formed by bonding several small permanent magnet blocks. In this embodiment, the two permanent magnets are respectively the first permanent magnet 1 and the second permanent magnet 2 , the magnetization directions of the first permanent magnet 1 and the second permanent magnet 2 are the same and are all along the longitudinal direction, and a longitudinal magnetic field in the opposite direction is generated in the gap between the first permanent magnet 1 and the second permanent magnet 2, and the first permanent magnet The two ends of the magnet 1 and the second permanent magnet 2 ar...
Embodiment 2
[0026] The same part of this embodiment and Embodiment 1 will not be described again, the difference is:
[0027] Such as Figure 4 As shown, in this embodiment, the cross-section of the soft iron pole 3 is U-shaped, and the flow direction of the magnetic flux of the transverse component is as follows image 3 indicated by the arrow.
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