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  • Andersson, ÅkeLund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory (author)

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

  • Article/chapterEnglish2000

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  • SPIE-Intl Soc Optical Eng,2000

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  • LIBRIS-ID:oai:lup.lub.lu.se:f1a0592a-26d9-4db4-a081-995f288804c9
  • https://lup.lub.lu.se/record/f1a0592a-26d9-4db4-a081-995f288804c9URI
  • https://doi.org/10.1117/1.1327498DOI

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  • Language:English
  • Summary in:English

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  • Subject category:art swepub-publicationtype
  • Subject category:ref swepub-contenttype

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  • 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.

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  • Johnson, Matthew SUniversity of Copenhagen (author)
  • Nelander, BengtLund University,Lunds universitet,Kemisk fysik,Enheten för fysikalisk och teoretisk kemi,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Chemical Physics,Physical and theoretical chemistry,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)be4747ne (author)
  • Lunds universitetMAX IV-laboratoriet (creator_code:org_t)

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  • In:Optical Engineering: SPIE-Intl Soc Optical Eng39:12, s. 3099-31050091-3286

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