TY - JOUR
T1 - End fields in the harmonic generation superconducting FEL at BNL-NSLS
AU - Graves, W. S.
AU - Solomon, L.
AU - Lehrman, I.
PY - 1995/4/11
Y1 - 1995/4/11
N2 - A study is presented of the end fields in the harmonic generation FEL radiator. This wiggler magnet consists of 6 contiguous 25 cm long steel yokes wound with superconductor, each with 18 mm period, 0.54 T field and 8.6 mm gap. Measurement results and analyses are given for third and sixth order binomial entrance excitations. It is shown that, when the steel cores are driven into saturation, the binomial winding is no longer steering-free, and that higher order entrance windings produce less electron beam steering than do low order windings.
AB - A study is presented of the end fields in the harmonic generation FEL radiator. This wiggler magnet consists of 6 contiguous 25 cm long steel yokes wound with superconductor, each with 18 mm period, 0.54 T field and 8.6 mm gap. Measurement results and analyses are given for third and sixth order binomial entrance excitations. It is shown that, when the steel cores are driven into saturation, the binomial winding is no longer steering-free, and that higher order entrance windings produce less electron beam steering than do low order windings.
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U2 - 10.1016/0168-9002(94)01338-1
DO - 10.1016/0168-9002(94)01338-1
M3 - Article
AN - SCOPUS:58149212871
VL - 358
SP - 414
EP - 417
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
SN - 0168-9002
IS - 1-3
ER -