First experimental data on the FEL - RF interaction at the Jefferson Lab IRFEL

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High power FELs driven by recirculating, energy-recovering linacs can exhibit instabilities in the beam energy and laser output power. Fluctuations in the accelerating cavity fields can cause beam loss on apertures, phase oscillations and optical cavity detuning. These can affect the laser power and in turn the beam-induced voltage to further enhance the fluctuations of the rf fields. A theoretical model was developed to study the dynamics of the coupled system and was presented last year. Recently, a first set of experimental data was obtained at the Jefferson Lab IRFEL for direct comparisons with the model. The authors describe the ... continued below

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378 Kilobytes pages

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Merminga, L.; Alexeev, P.; Benson, S.V.; Bolshakov, A.; Doolittle, L.R.; Douglas, D.R. et al. August 1, 1999.

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High power FELs driven by recirculating, energy-recovering linacs can exhibit instabilities in the beam energy and laser output power. Fluctuations in the accelerating cavity fields can cause beam loss on apertures, phase oscillations and optical cavity detuning. These can affect the laser power and in turn the beam-induced voltage to further enhance the fluctuations of the rf fields. A theoretical model was developed to study the dynamics of the coupled system and was presented last year. Recently, a first set of experimental data was obtained at the Jefferson Lab IRFEL for direct comparisons with the model. The authors describe the experiment, present the data together with the modeling predictions and outline future directions.

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378 Kilobytes pages

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  • FEL Conference, Hamburg (DE), 08/23/1999--08/28/1999

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  • Report No.: DOE/ER/40150-1424
  • Report No.: JLAB-ACP-99-04
  • Grant Number: AC05-84ER40150
  • Office of Scientific & Technical Information Report Number: 755079
  • Archival Resource Key: ark:/67531/metadc706073

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  • August 1, 1999

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  • Sept. 12, 2015, 6:31 a.m.

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  • Feb. 5, 2016, 8:06 p.m.

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Merminga, L.; Alexeev, P.; Benson, S.V.; Bolshakov, A.; Doolittle, L.R.; Douglas, D.R. et al. First experimental data on the FEL - RF interaction at the Jefferson Lab IRFEL, article, August 1, 1999; Newport News, Virginia. (digital.library.unt.edu/ark:/67531/metadc706073/: accessed December 15, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.