An off-axis 50-period electromagnet wiggler for millimeter-wave free-electron laser experiment

Author

Mohandas, K.K. ; Kumar, A. V Ravi ; Jain, K.K.

Author_Institution

Inst. for Plasma Res., Gandhinagar, India

Volume

28

Issue

3

fYear

2000

fDate

6/1/2000 12:00:00 AM

Firstpage

621

Lastpage

625

Abstract

An off-axis 50-period planar, short-wavelength (~10 mm) electromagnet wiggler is developed and characterized for millimeter-wave generation using a sheet electron beam in a free-electron laser experiment. Three-dimensional (3-D) magnetic field measurements of the electromagnet wiggler have been carried out. The measured wiggler magnetic field is 0.16 G/A ±3% while the mean value of wiggler wavelength is 0.998±3% cm. Due to off-axis arrangement of poles, there is a magnetic mirror field in the X direction, to confine the sheet beam

Keywords

electron beams; free electron lasers; magnetic field measurement; magnetic mirrors; millimetre wave generation; millimetre wave lasers; wigglers; 10 mm; 100 GHz; 50-period planar short-wavelength electromagnet wiggler; X direction; electromagnet wiggler; free-electron laser experiment; magnetic mirror field; millimeter-wave free-electron laser experiment; millimeter-wave generation; off-axis 50-period electromagnet wiggler; off-axis pole arrangement; sheet beam; sheet electron beam; short-wavelength (~10 mm) electromagnet wiggler; three-dimensional magnetic field measurements; wiggler magnetic field; wiggler wavelength; Character generation; Electromagnetic measurements; Electromagnets; Electron beams; Free electron lasers; Magnetic confinement; Magnetic field measurement; Millimeter wave measurements; Undulators; Wavelength measurement;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/27.887686

Filename

887686