Free-electron maser based on a cavity with two- and one-dimensional distributed feedback

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Abstract

The study of a coaxial free-electron maser (FEM) based on two-dimensional (2D) and one-dimensional (1D) distributed feedback, driven by a 70 mm diameter, annular electron beam is presented. A new cavity formed with 2D and 1D periodic lattices, positioned at the input and output of the interaction region, respectively, was used. It has been demonstrated that 2D distributed feedback in the input mirror allowed 8 mm radiation emitted from different parts of the electron beam to be synchronized. The FEM operating in the 35.9-38.9 GHz frequency region generated 65 MW, 150 ns duration millimetre wave pulses which contained ∼ 10 J of energy in the pulse.
LanguageEnglish
Article number211501
Number of pages3
JournalApplied Physics Letters
Volume92
Issue number21
DOIs
Publication statusPublished - 27 May 2008

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masers
free electrons
electron beams
cavities
pulses
millimeter waves
mirrors
output
radiation
interactions
energy

Keywords

  • free-electron maser
  • cavity
  • two- and one-dimensional distributed feedback

Cite this

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title = "Free-electron maser based on a cavity with two- and one-dimensional distributed feedback",
abstract = "The study of a coaxial free-electron maser (FEM) based on two-dimensional (2D) and one-dimensional (1D) distributed feedback, driven by a 70 mm diameter, annular electron beam is presented. A new cavity formed with 2D and 1D periodic lattices, positioned at the input and output of the interaction region, respectively, was used. It has been demonstrated that 2D distributed feedback in the input mirror allowed 8 mm radiation emitted from different parts of the electron beam to be synchronized. The FEM operating in the 35.9-38.9 GHz frequency region generated 65 MW, 150 ns duration millimetre wave pulses which contained ∼ 10 J of energy in the pulse.",
keywords = "free-electron maser, cavity, two- and one-dimensional distributed feedback",
author = "I.V. Konoplev and A.W. Cross and P. MacInnes and W. He and A.D.R. Phelps and C.G. Whyte and K. Ronald and C.W. Robertson",
year = "2008",
month = "5",
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doi = "10.1063/1.2924313",
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journal = "Applied Physics Letters",
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TY - JOUR

T1 - Free-electron maser based on a cavity with two- and one-dimensional distributed feedback

AU - Konoplev, I.V.

AU - Cross, A.W.

AU - MacInnes, P.

AU - He, W.

AU - Phelps, A.D.R.

AU - Whyte, C.G.

AU - Ronald, K.

AU - Robertson, C.W.

PY - 2008/5/27

Y1 - 2008/5/27

N2 - The study of a coaxial free-electron maser (FEM) based on two-dimensional (2D) and one-dimensional (1D) distributed feedback, driven by a 70 mm diameter, annular electron beam is presented. A new cavity formed with 2D and 1D periodic lattices, positioned at the input and output of the interaction region, respectively, was used. It has been demonstrated that 2D distributed feedback in the input mirror allowed 8 mm radiation emitted from different parts of the electron beam to be synchronized. The FEM operating in the 35.9-38.9 GHz frequency region generated 65 MW, 150 ns duration millimetre wave pulses which contained ∼ 10 J of energy in the pulse.

AB - The study of a coaxial free-electron maser (FEM) based on two-dimensional (2D) and one-dimensional (1D) distributed feedback, driven by a 70 mm diameter, annular electron beam is presented. A new cavity formed with 2D and 1D periodic lattices, positioned at the input and output of the interaction region, respectively, was used. It has been demonstrated that 2D distributed feedback in the input mirror allowed 8 mm radiation emitted from different parts of the electron beam to be synchronized. The FEM operating in the 35.9-38.9 GHz frequency region generated 65 MW, 150 ns duration millimetre wave pulses which contained ∼ 10 J of energy in the pulse.

KW - free-electron maser

KW - cavity

KW - two- and one-dimensional distributed feedback

U2 - 10.1063/1.2924313

DO - 10.1063/1.2924313

M3 - Article

VL - 92

JO - Applied Physics Letters

T2 - Applied Physics Letters

JF - Applied Physics Letters

SN - 0003-6951

IS - 21

M1 - 211501

ER -