Development of Elliptical Undulators for Elettra
نویسنده
چکیده
A range of elliptical undulators (EU) has recently been constructed at ELETTRA, whose main parameters are listed in Table 1 below. They are all based on the APPLE-II scheme [1], but two different terminations have been used due to specific installation requirements. Also, one of them (EU12.5) features a quasi-periodic field to suit special beamline needs. The minimum magnetic gap corresponds to the design value of 19 mm for all the devices, with the exception of one case where it had to be reduced to 18.6 mm to reach the required field level. It should be pointed out that data for undulator EU4.8 refer to a 10-period prototype, as the full-length device is presently undergoing final assembly.
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