Experimental study of compact FEL with micro wiggler and electrostatic accelerator

A compact FEL for submillimeter and far infrared regions is studied at the Institute of Space and Astronautical Science. The FEL can be compact by using an electrostatic accelerator and a micro wiggler. The electrostatic accelerator (DISKTRON) with a diameter of 1 m can generate up to 1 MV continuou...

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Published inNuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Vol. 475; no. 1; pp. 281 - 286
Main Authors Fujii, S., Fujita, T., Mizuno, T., Ohshima, T., Kawai, M., Saito, H., Kuroki, S., Koshiji, K.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.12.2001
Subjects
Electrostatic accelerator
Free electron laser
Micro wiggler
Micro wiggler
07.57.Hm
Free electron laser
41.60.cr
Electrostatic accelerator
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Summary:A compact FEL for submillimeter and far infrared regions is studied at the Institute of Space and Astronautical Science. The FEL can be compact by using an electrostatic accelerator and a micro wiggler. The electrostatic accelerator (DISKTRON) with a diameter of 1 m can generate up to 1 MV continuously. The micro wiggler is fabricated using permanent magnets made from Nd–Fe–B. (period: 8 mm, total length: 248 mm, gap: 2–10 mm, K parameter: 0.07–0.7) An electron beam of high quality is generated by means of a photo cathode. (731 kV, 1.5 A, 25 ns, 2 mm φ, Δ E/ E:0.18%) In the preliminary phase, detection of the FEL at the millimeter wave region of 96 GHz is conducted. The electron beam is injected into a resonator with Distributed Bragg Reflector. A small millimeter wave signal has been detected.
ISSN:0168-9002
1872-9576
DOI:10.1016/S0168-9002(01)01619-9