Longitudinal phase space manipulation in energy recovering linac-driven free-electron lasers

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Energy recovering an electron beam after it has participated in a free-electron laser (FEL) interaction can be quite challenging because of the substantial FEL-induced energy spread and the energy anti-damping that occurs during deceleration. In the Jefferson Lab infrared FEL driver-accelerator, such an energy recovery scheme was implemented by properly matching the longitudinal phase space throughout the recirculation transport by employing the so-called energy compression scheme. In the present paper, after presenting a single-particle dynamics approach of the method used to energy-recover the electron beam, we report on experimental validation of the method obtained by measurements of the so-called ''compression ... continued below

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Piot, P.; Douglas, D.R. & Krafft, G.A. November 1, 2002.

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Energy recovering an electron beam after it has participated in a free-electron laser (FEL) interaction can be quite challenging because of the substantial FEL-induced energy spread and the energy anti-damping that occurs during deceleration. In the Jefferson Lab infrared FEL driver-accelerator, such an energy recovery scheme was implemented by properly matching the longitudinal phase space throughout the recirculation transport by employing the so-called energy compression scheme. In the present paper, after presenting a single-particle dynamics approach of the method used to energy-recover the electron beam, we report on experimental validation of the method obtained by measurements of the so-called ''compression efficiency'' and ''momentum compaction'' lattice transfer maps at different locations in the recirculation transport line. We also compare these measurements with numerical tracking simulations.

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425 Kilobytes pages

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  • Report No.: JLAB-ACT-02-18
  • Report No.: DOE/ER/40150-2376
  • Report No.: physics/0211048
  • Grant Number: AC05-84ER40150
  • Office of Scientific & Technical Information Report Number: 804718
  • Archival Resource Key: ark:/67531/metadc734040

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Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • November 1, 2002

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  • Oct. 18, 2015, 6:40 p.m.

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  • Feb. 5, 2016, 9:48 p.m.

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Piot, P.; Douglas, D.R. & Krafft, G.A. Longitudinal phase space manipulation in energy recovering linac-driven free-electron lasers, article, November 1, 2002; Newport News, Virginia. (digital.library.unt.edu/ark:/67531/metadc734040/: accessed April 24, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.