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Figure 9
Emittance reduction ratio along with the peak magnetic field of the 180 m damping wiggler. The period of the damping wiggler is scanned from 2 cm to 6 cm. Ring-FEL configuration uses an 80 m-long undulator which has a 4.4 cm period and a 1.54 T peak field. It is close to an optimal condition as a damping wiggler.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 27| Part 4| July 2020| Pages 864-869
https://doi.org/10.1107/S1600577520005676
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