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. 2020 Aug 5;27(Pt 5):1415–1429. doi: 10.1107/S1600577520008723

Table 2. BioMAX undulator main parameters.

Magnet material NdFeB with B r of 1.266 T (specified 1.24 T)
Pole material Vanadium permendur
Energy range 5–25 keV
Period length 18 mm
Number of periods 111
Minimum magnetic gap 4.2 mm
K value at minimum gap 2.19 (specified >1.92)
Tapering of peak field Up to 5% per meter
Maximum RMS phase error at all gaps ≤ 2.5°