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The centerpiece of the upgrade at X25 is a new mini-gap undulator to replace
the existing wiggler. Beamline optical upgrades will exploit the remarkable properties
of the undulator.
NSLS staff members Geoge Rakowsky and Don Lynch proposed a variation of the
X13 and X29 undulator design that provides more nearly continuous energy tunability.
The new X25 undulator is a longer device with a longer period and a wider gap, and will
have higher brightness and continuous energy tunability from 2 to 20 keV, as shown in
blue in the figure below.
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Webteam