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

Abstract

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.

Authors:
; ; ; ; ; ; ;
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility, Newport News, VA (US)
Sponsoring Org.:
USDOE Office of Energy Research (ER) (US)
OSTI Identifier:
755079
Report Number(s):
DOE/ER/40150-1424; JLAB-ACP-99-04
TRN: US0002331
DOE Contract Number:  
AC05-84ER40150
Resource Type:
Conference
Resource Relation:
Conference: FEL Conference, Hamburg (DE), 08/23/1999--08/28/1999; Other Information: PBD: 1 Aug 1999
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; 42 ENGINEERING; FREE ELECTRON LASERS; LINEAR ACCELERATORS; INFRARED RADIATION; BEAM DYNAMICS; MATHEMATICAL MODELS

Citation Formats

L. Merminga, P. Alexeev, S.V. Benson, A. Bolshakov, L.R. Doolittle, D.R. Douglas, C. Hovater, and G.R. Neil. First experimental data on the FEL - RF interaction at the Jefferson Lab IRFEL. United States: N. p., 1999. Web.
L. Merminga, P. Alexeev, S.V. Benson, A. Bolshakov, L.R. Doolittle, D.R. Douglas, C. Hovater, & G.R. Neil. First experimental data on the FEL - RF interaction at the Jefferson Lab IRFEL. United States.
L. Merminga, P. Alexeev, S.V. Benson, A. Bolshakov, L.R. Doolittle, D.R. Douglas, C. Hovater, and G.R. Neil. Sun . "First experimental data on the FEL - RF interaction at the Jefferson Lab IRFEL". United States. https://www.osti.gov/servlets/purl/755079.
@article{osti_755079,
title = {First experimental data on the FEL - RF interaction at the Jefferson Lab IRFEL},
author = {L. Merminga and P. Alexeev and S.V. Benson and A. Bolshakov and L.R. Doolittle and D.R. Douglas and C. Hovater and G.R. Neil},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Aug 01 00:00:00 EDT 1999},
month = {Sun Aug 01 00:00:00 EDT 1999}
}

Conference:
Other availability
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