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Coherent synchrotron radiation in the far infrared from a 1-mm electron bunch

Andersson, Åke LU ; Johnson, Matthew S and Nelander, Bengt LU (2000) In Optical Engineering 39(12). p.3099-3105
Abstract
The coherent generation of synchrotron radiation by an electron storage ring is predicted for wavelengths equal to or longer than the electron bunch length. With typical bunch lengths of approximately 1 cm, diffraction and chamber-screening effects have so far blocked observation of coherent radiation from a conventional radiation beamline. In the low-energy, second-generation light source MAX-I, the magnet lattice has been tuned to a small momentum compaction factor, allowing rms bunch lengths as short as 1 mm. Here we report the coherent far-infrared emission observed from such a bunch. The paper discusses the origin of coherent synchrotron radiation for Gaussian and non-Gaussian electron bunches, and the procedure used to generate such... (More)
The coherent generation of synchrotron radiation by an electron storage ring is predicted for wavelengths equal to or longer than the electron bunch length. With typical bunch lengths of approximately 1 cm, diffraction and chamber-screening effects have so far blocked observation of coherent radiation from a conventional radiation beamline. In the low-energy, second-generation light source MAX-I, the magnet lattice has been tuned to a small momentum compaction factor, allowing rms bunch lengths as short as 1 mm. Here we report the coherent far-infrared emission observed from such a bunch. The paper discusses the origin of coherent synchrotron radiation for Gaussian and non-Gaussian electron bunches, and the procedure used to generate such bunches. The emission was characterized using the infrared beamline at MAX-I, including an interferometer, a liquid-helium-cooled bolometer detector, waveguide high-pass filters, and a conductive-grid polarization filter. The intensity of the coherent radiation is greater by a factor of 2×103 to 6×103 than normal incoherent synchrotron radiation, and is seen between 8 and 22 cm-1. (Less)
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author
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Optical Engineering
volume
39
issue
12
pages
3099 - 3105
publisher
SPIE
external identifiers
  • scopus:0034430284
ISSN
0091-3286
DOI
10.1117/1.1327498
language
English
LU publication?
yes
id
f1a0592a-26d9-4db4-a081-995f288804c9
date added to LUP
2019-06-29 23:39:20
date last changed
2020-11-22 06:09:17
@article{f1a0592a-26d9-4db4-a081-995f288804c9,
  abstract     = {The coherent generation of synchrotron radiation by an electron storage ring is predicted for wavelengths equal to or longer than the electron bunch length. With typical bunch lengths of approximately 1 cm, diffraction and chamber-screening effects have so far blocked observation of coherent radiation from a conventional radiation beamline. In the low-energy, second-generation light source MAX-I, the magnet lattice has been tuned to a small momentum compaction factor, allowing rms bunch lengths as short as 1 mm. Here we report the coherent far-infrared emission observed from such a bunch. The paper discusses the origin of coherent synchrotron radiation for Gaussian and non-Gaussian electron bunches, and the procedure used to generate such bunches. The emission was characterized using the infrared beamline at MAX-I, including an interferometer, a liquid-helium-cooled bolometer detector, waveguide high-pass filters, and a conductive-grid polarization filter. The intensity of the coherent radiation is greater by a factor of 2×103 to 6×103 than normal incoherent synchrotron radiation, and is seen between 8 and 22 cm-1.},
  author       = {Andersson, Åke and Johnson, Matthew S and Nelander, Bengt},
  issn         = {0091-3286},
  language     = {eng},
  number       = {12},
  pages        = {3099--3105},
  publisher    = {SPIE},
  series       = {Optical Engineering},
  title        = {Coherent synchrotron radiation in the far infrared from a 1-mm electron bunch},
  url          = {http://dx.doi.org/10.1117/1.1327498},
  doi          = {10.1117/1.1327498},
  volume       = {39},
  year         = {2000},
}