Insertion device for use with synchrotron radiation

Details Insertion device for use with synchrotron radiation Insertion device for use with synchrotron radiation

1996-02-01

1998-02-03

Patel, Ashok

Electric lamp and discharge devices: systems

High energy particle accelerator tube

With injection or extraction means

315503, 315 535, H01J 2310

Patent

active

057148503

ABSTRACT:
The invention provides an insertion device for use with synchrotron radiation, including a horizontal undulator including a plurality of magnets linearly arranged along an axis of electron beams so that alternately positioned magnets have common polarity, and a vertical undulator including a plurality of magnets linearly arranged along an axis of electron beams so that alternately positioned magnets have common polarity. The horizontal and vertical undulators are perpendicularly centered about axes thereof, and arranged to be axially offset so that magnetic fields produced by the horizontal and vertical undulators are perpendicular to each other and a magnetic field produced by one of the horizontal and vertical undulators is inverted for each period of a magnetic field produced by the other. The insertion device is positioned in a straight section between bending magnets of a circular accelerator. In operation, the insertion device causes electrons beams to rotate alternately in opposite directions in a FIG. 8 fashion about an axis of the electron beams.

REFERENCES:
patent: 5383049 (1995-01-01), Carr
T. Tanaka, et al.: "Figure-8 undulator as an insertion device with linear polarization and low on-axis power density", Nuclear Instruments and Methods in Physics Research, Section A, vol.364 (1995) pp. 368-373.
Hideo Onuki: "Elliptically Polarized Synchrotron Radiation Source with Crossed and Retarded Magnetic Fields", Nuclear Instruments and Method in Physics Research, Section A, vol. 246 (1986) pp. 94-98.
H. Kitamura: "Production of circularly polarized synchrotron radiation" Synchrotron Radiation News, vol.5, No.1, 1992, pp. 14-20.
S. Yamamoto et al.: "Generation of Quasi-Circularly Polarized Undulator Radiation with Higher Harmonics", Japanese Journal of Applied Physics, vol.26, No.10, Oct. 1987, pp. L1613-L1615.

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