TY - JOUR
T1 - Design of a tandem accelerator free electron laser
AU - Ben-Zvi, I.
AU - Gover, A.
AU - Jerby, E.
AU - Sokolowski, J. S.
AU - Wachtel, J.
N1 - Funding Information:
Most FEL projects in the optical frequency regime were based so far on rf accelerators (storage rings, linacs or microtrons) or induction accelerators . A unique scheme, based on a Van de Graaff accelerator, was demonstrated recently by the UCSB group, headed by Elias [2]. They succeeded in demonstrating the operation of such an accelerator with long pulses (tens of microseconds) of high current (1 A) by using a beam energy retrieval method. In this scheme the high power of the laser is supplied by a moderate voltage high current collector power supply, and the accelerator charging system need only supply enough current to compensate for beam current loss in the HV terminal or acceleration tubes. The depressed collector scheme used in microwave tube techniques enables the operation of devices with radiative extraction efficiency beyond 50`x . Such high efficiencies and correspondingly high laser + Supported in part by a grant from Yeda Research and Development Co. Ltd. * Faculty of Engineering, Tel-Aviv University, Ramat-Aviv 69978, Israel . * * Elta Electronics Industries, Ashdod, Israel.
PY - 1988/5/20
Y1 - 1988/5/20
N2 - The motivation for using a tandem electrostatic accelerator as an electron accelerator for a free electron laser (FEL) is presented. The adaptation of the HVEC EN tandem at the Weizmann Institute for this purpose, electron beam optics and nonlinear FEL computation relevant for this FEL realization are described. In the tandem configuration the terminal is held at a positive potential. The electron beam is accelerated from ground potential to the terminal in one beam tube and then decelerated down the other beam tube. The FEL wiggler and cavity are at the terminal. Due to the beam energy recovery this scheme produces a high power beam at the terminal with a small investment in electrical power.
AB - The motivation for using a tandem electrostatic accelerator as an electron accelerator for a free electron laser (FEL) is presented. The adaptation of the HVEC EN tandem at the Weizmann Institute for this purpose, electron beam optics and nonlinear FEL computation relevant for this FEL realization are described. In the tandem configuration the terminal is held at a positive potential. The electron beam is accelerated from ground potential to the terminal in one beam tube and then decelerated down the other beam tube. The FEL wiggler and cavity are at the terminal. Due to the beam energy recovery this scheme produces a high power beam at the terminal with a small investment in electrical power.
UR - http://www.scopus.com/inward/record.url?scp=0023343268&partnerID=8YFLogxK
U2 - 10.1016/0168-9002(88)90579-7
DO - 10.1016/0168-9002(88)90579-7
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AN - SCOPUS:0023343268
SN - 0168-9002
VL - 268
SP - 561
EP - 566
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 - 2-3
ER -