Feasibility Study for a Seeded Hard X-ray Source Based on a Two-Stage Echo-Enabled Harmonic Generation FEL

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We propose and analyze a scheme to achieve a seeded hard x-ray source based on a two-stage echo-enabled harmonic generation (EEHG) FEL. In the scheme an 180 nm seed laser covering the whole bunch is first used to modulate the beam when beam energy is 2 GeV. After passing through a strong chicane complicated fine structures are introduced into the phase space. The beam is again modulated by a short 180 nm laser that only interacts with the rear part of the beam and accelerated to 6 GeV. A chicane is then used to convert the energy modulation imparted to ... continued below

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4 pages

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Xiang, Dao; Huang, Z.; Ratner, D.; Stupakov, G. & /SLAC December 11, 2009.

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We propose and analyze a scheme to achieve a seeded hard x-ray source based on a two-stage echo-enabled harmonic generation (EEHG) FEL. In the scheme an 180 nm seed laser covering the whole bunch is first used to modulate the beam when beam energy is 2 GeV. After passing through a strong chicane complicated fine structures are introduced into the phase space. The beam is again modulated by a short 180 nm laser that only interacts with the rear part of the beam and accelerated to 6 GeV. A chicane is then used to convert the energy modulation imparted to the rear part of the beam into density modulation. The density-modulated beam is sent through a radiator to generate intense 6 nm radiation which will be used to interact with the front fresh part of the bunch. Finally we generate in the front part of the beam density modulation at the 1199th harmonic of the seed laser. We will discuss the issues related to the realization of the seeded hard x-ray FEL.

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4 pages

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  • Presented at 31st Free Electron Laser Conference FEL09, Liverpool, United Kingdom, 23-28 Aug 2009

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  • Report No.: SLAC-PUB-13818
  • Grant Number: AC02-76SF00515
  • Office of Scientific & Technical Information Report Number: 969251
  • Archival Resource Key: ark:/67531/metadc931513

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Office of Scientific & Technical Information Technical Reports

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  • December 11, 2009

Added to The UNT Digital Library

  • Nov. 13, 2016, 7:26 p.m.

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  • Dec. 15, 2016, 3:26 p.m.

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Xiang, Dao; Huang, Z.; Ratner, D.; Stupakov, G. & /SLAC. Feasibility Study for a Seeded Hard X-ray Source Based on a Two-Stage Echo-Enabled Harmonic Generation FEL, article, December 11, 2009; United States. (digital.library.unt.edu/ark:/67531/metadc931513/: accessed September 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.