TY - JOUR
T1 - Resonator design and characterization for the Israeli tandem electrostatic FEL project
AU - Yakover, I. M.
AU - Pinhasi, Y.
AU - Gover, A.
N1 - Funding Information:
* This work was supported by grants of the U.S.-Israel Bi-National Foundation and the Israeli Ministry of Science. * Corresponding author. Tel. + 972 3 6 408 149, fax + 972 3 6 423 508.
PY - 1995/4/11
Y1 - 1995/4/11
N2 - The design and measurements of a resonator operating near 100 GHz and intended for use in a tandem FEL are presented. The designed resonator employs two parallel curved plates as a waveguide. In FEL operation the TE01 mode is excited. The resonator employs two wave splitters as reflectors. The wave splitters are segments of an overmoded rectangular waveguide which is connected at one end to the waveguide as described above, and is shorted at the other end by a metal plate with an aperture in the center for e-beam passage. Gain calculations were made in the low gain regime. At the operating frequency the curvature of the plates and the gap size were chosen so as to maximize the gain. A multimode analysis of the wave splitter was made. Calculations show, that the optimal splitter width and length allow achievement of very low diffraction losses at the aperture (∼ 2%). This means that the aperture can be made sufficiently large to allow efficient beam entrance into the resonator without degrading its Q-factor. A resonator prototype was constructed and its performance was evaluated experimentally.
AB - The design and measurements of a resonator operating near 100 GHz and intended for use in a tandem FEL are presented. The designed resonator employs two parallel curved plates as a waveguide. In FEL operation the TE01 mode is excited. The resonator employs two wave splitters as reflectors. The wave splitters are segments of an overmoded rectangular waveguide which is connected at one end to the waveguide as described above, and is shorted at the other end by a metal plate with an aperture in the center for e-beam passage. Gain calculations were made in the low gain regime. At the operating frequency the curvature of the plates and the gap size were chosen so as to maximize the gain. A multimode analysis of the wave splitter was made. Calculations show, that the optimal splitter width and length allow achievement of very low diffraction losses at the aperture (∼ 2%). This means that the aperture can be made sufficiently large to allow efficient beam entrance into the resonator without degrading its Q-factor. A resonator prototype was constructed and its performance was evaluated experimentally.
UR - http://www.scopus.com/inward/record.url?scp=0001457765&partnerID=8YFLogxK
U2 - 10.1016/0168-9002(94)01487-6
DO - 10.1016/0168-9002(94)01487-6
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AN - SCOPUS:0001457765
SN - 0168-9002
VL - 358
SP - 323
EP - 326
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
IS - 1-3
ER -