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Figure 3
The 100 mm-long PMMs after magnetization with a period length of 4 mm, made of Nd–Fe–B material and coated with TiN. These PMMs are paired and opposed to form the undulator field. The lower PMM is covered by a magnetic viewer sheet, and the magnetic field pattern can be seen through it.

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SYNCHROTRON
RADIATION
ISSN: 1600-5775
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