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Experiments: Completed / Terminated

INVERSE FEL EXPERIMENT

EXPERIMENTAL RESULTS

An IFEL accelerator module has been successfully tested at the Accelerator Test Facility.. View of the electron energy spectrum at the spectrometer.

Worldwide IFEL Experimental Results (January 1996); if your browser support table format; otherwise use the pre-format

The experiments makes use of the 50 MeV linac beam and high power (2 1011 W) CO2 laser beam of the ATF in conjunction with a fast excitation (300 micro-sec pulse duration) variable period wiggler. Fast Excitation Wiggler for the IFEL Experiment at the ATF

The wiggler makes use of alternating stacks of Vanadium Permandur (VaP) ferromagnetic laminations, periodically interspersed with conductive, nonmagnetic laminations, which act as eddy current induced field reflectors. A typical period length taper for the IFEL experiment is lambda = 3.0 - 5.0 cm, d lambda/dz = 4%. Other wiggler parameters are: B_max =14 kG (I = 6 kA) and maximum field variation pole-to-pole, ({\Delta B}/B)_rms = 0.2%.

The CO_2 laser beam will be transported through the IFEL interaction region by means of a low loss (alpha=0.2 dB/m) dielectric (sapphire) circular waveguide of 2.8 mm i.d. and 1 m long.

The IFEL design is supported by the development and use of 1D and 3D simulation programs.

Schematic Diagram for the IFEL Experiment at the ATF
Parameters for the IFEL Experiment at the ATF

PARTICIPANTS IN THE IFEL EXPERIMENT

J. C. Gallardo; jcg@bnlarm.bnl.gov ; BNL Physics Dept. Tel.:516-282-3523

A. van Steenbergen, spokesperson; avanst@bnlls1.nsls.bnl.gov ; NSLS Dept., ext. 4604

J-M. Fang, Columbia University (Graduate Student)

J. Sandweiss; jake.sandweiss@yale.edu ; Physics Dept., Yale University

With contributions by:

M. Babzien, K. Batchelor, A. Fisher, K. Kusche, R. Malone, I. Pogorelsky, J. Qiu, T. Romano, J. Sheehan, J. Skaritka, T. Srinivasan-Rao, X-J. Wang.

RECENT PUBLICATIONS:

  • A. Fisher, J. Gallardo, J. Sandweiss and A. van Steenbergen, Inverse Free Electron Laser Accelerator, AIP Conference Proceedings 279, Advanced Accelerator Concepts, Port Jefferson, NY, 1992, Editor, J.Wurtele, pp.299 .
  • A. Fisher, J. Gallardo, J. Sandweiss and A. van Steenbergen, Inverse Free Electron Laser Accelerator Development, NIM A341 (1994).
  • A. van Steenbergen, patent application 368618, June 1989 (issued Aug 1990).
  • A. van Steenbergen, J. Gallardo, T. Romano, M. Woodle , Fast Excitation Variable Period Wiggler, Proc. PAC IEEE Nucl. Sc., San Francisco, CA, 1991, pp. 2794.
  • A. van Steenbergen, J. Gallardo, J. Sandweiss, J-M Fang, Inverse Free Electron Laser Development, VI. Workshop on Advanced Accelerator Concepts, June 1994, Lake Geneva, WI.
  • A. van Steenbergen, J. Gallardo, J. Sandweiss, J-M Fang, M.Babzien, K. Batchelor, A. Fisher, K. Kusche, R. Malone, I.Pogorelsky, J.Qiu, T.Romano, J. Sheehan, J. Skaritka, T.Srinivasan-Rao, X-J Wang, Inverse Free Electron Laser Electron Acceleration, BNL/ATF Users Meeting, December 1995.

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Last Modified: December 3, 2007
Please forward all questions about this site to: Christina Swinson
 


DOE, Office of Science One of ten national laboratories overseen and primarily funded by the Office of Science of the U.S. Department of Energy (DOE), Brookhaven National Laboratory conducts research in the physical, biomedical, and environmental sciences, as well as in energy technologies and national security. Brookhaven Lab also builds and operates major scientific facilities available to university, industry and government researchers. Brookhaven is operated and managed for DOE's Office of Science by Brookhaven Science Associates, a limited-liability company founded by the Research Foundation for the State University of New York on behalf of Stony Brook University, the largest academic user of Laboratory facilities, and Battelle, a nonprofit, applied science and technology organization.

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