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First lasing of the IR upgrade FEL at Jefferson Lab

Behre, C., Benson, S., Biallas, G., Boyce, J., Curtis, C., Douglas, D., Dylla, H.F., Dillon-Townes, L., Evans, R., Grippo, A.C., Gubeli, J., Hardy, D., Heckman, J., Hernandez-Garcia, C., Hiatt, T., Jordan, K., Merminga, L., Neil, G., Preble, J., Rutt, H., Shinn, M., Siggins, T., Toyokawa, H., Waldman, D.W., Walker, R., Wilson, N., Yunn, B. and Zhang, S. (2004) First lasing of the IR upgrade FEL at Jefferson Lab Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 528, (1-2), pp. 19-22. (doi:10.1016/j.nima.2004.04.010).

Record type: Article


We report initial lasing results from the IR Upgrade FEL at Jefferson Lab (Proceedings: 2001 Particle Accelerator Conference, IEEE, Piscataway, NJ, 2001). The electron accelerator was operated with low average current beam at 80 MeV. The time structure of the beam was 120 pC bunches at 4.678MHz with up to 750 µs pulses at 2 Hz. Lasing was established over the entire wavelength range of the mirrors (5.5-6.6 µm). The detuning curve length, turn-on time, and power were in agreement with modeling results assuming a 1 ps FWHM micropulse. The same model predicts over 10kW of power output with 10mA of beam and 10% output coupling, which is the ultimate design goal of the IR Upgrade FEL. The behavior of the laser while the dispersion section strength was varied was found to qualitatively match predictions. Initial CW lasing results also will be presented.

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Published date: 2004
Additional Information: 2787
Keywords: high power, undulators
Organisations: Optoelectronics Research Centre, Electronics & Computer Science


Local EPrints ID: 264022
ISSN: 0168-9002
PURE UUID: d113200a-7fc5-4b0b-b3d6-dfb62c082ff5

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Date deposited: 17 May 2007
Last modified: 18 Jul 2017 07:40

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Author: C. Behre
Author: S. Benson
Author: G. Biallas
Author: J. Boyce
Author: C. Curtis
Author: D. Douglas
Author: H.F. Dylla
Author: L. Dillon-Townes
Author: R. Evans
Author: A.C. Grippo
Author: J. Gubeli
Author: D. Hardy
Author: J. Heckman
Author: C. Hernandez-Garcia
Author: T. Hiatt
Author: K. Jordan
Author: L. Merminga
Author: G. Neil
Author: J. Preble
Author: H. Rutt
Author: M. Shinn
Author: T. Siggins
Author: H. Toyokawa
Author: D.W. Waldman
Author: R. Walker
Author: N. Wilson
Author: B. Yunn
Author: S. Zhang

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