Superconducting short-period undulator for a harmonic generation FEL experiment in the infrared

Gerhold Ingold; Lorraine Solomon; Ilan Ben-Zvi; Samuel Krinsky; D. Li; Donald R. Lynch; Joe Sheehan; Martin H. Woodle; Xu Z. Qiu; Li-Hua Yu; Xiaohao Zhang; William Sampson; M. Garber; Kenneth Robins; Ira S. Lehrman; Ronald Heuer; John R. Sheehan; Donald Weissenburger

doi:10.1117/12.164787

29 November 1993 Superconducting short-period undulator for a harmonic generation FEL experiment in the infrared

Gerhold Ingold, Lorraine Solomon, Ilan Ben-Zvi, Samuel Krinsky, D. Li, Donald R. Lynch, Joe Sheehan, Martin H. Woodle, Xu Z. Qiu, Li-Hua Yu, Xiaohao Zhang, William Sampson, M. Garber, Kenneth Robins, Ira S. Lehrman, Ronald Heuer, John R. Sheehan, Donald Weissenburger

Author Affiliations +

Proceedings Volume 2013, Electron-Beam Sources of High-Brightness Radiation; (1993) https://doi.org/10.1117/12.164787
Event: SPIE's 1993 International Symposium on Optics, Imaging, and Instrumentation, 1993, San Diego, CA, United States

Abstract

A three stage superconducting undulator (modulator, dispersive section, and radiator) is under construction at the National Synchrotron Light Source--Accelerator Test Facility at Brookhaven National Laboratory in collaboration with Grumman Corporation. A novel undulator technology suitable for short period undulators (6 - 40 mm) is employed that offers (1) high magnetic fields on axis at short periods, (2) as easily varied field, (3) a variable dispersion, (4) a variable magnetic field taper to ensure optimum resonance between the electrons and the radiation field, (5) transverse focusing to prevent electron beam emittance growth, and (6) low random field errors (below 0.3% rms) as machined and assembled, without shimming or trimming.

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Gerhold Ingold, Lorraine Solomon, Ilan Ben-Zvi, Samuel Krinsky, D. Li, Donald R. Lynch, Joe Sheehan, Martin H. Woodle, Xu Z. Qiu, Li-Hua Yu, Xiaohao Zhang, William Sampson, M. Garber, Kenneth Robins, Ira S. Lehrman, Ronald Heuer, John R. Sheehan, and Donald Weissenburger "Superconducting short-period undulator for a harmonic generation FEL experiment in the infrared", Proc. SPIE 2013, Electron-Beam Sources of High-Brightness Radiation, (29 November 1993); https://doi.org/10.1117/12.164787

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KEYWORDS

Magnetism

Electron beams

Free electron lasers

Modulators

Superconductors

Tolerancing

Harmonic generation

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