Vertically polarizing undulator with dynamic compensation of magnetic forces

Journal Article · Fri Jan 20 00:00:00 EST 2017 · Physical Review Accelerators and Beams

DOI:https://doi.org/10.1103/PhysRevAccelBeams.20.010701· OSTI ID:1341264

Strelnikov, N.; Vasserman, I.; Xu, J.; Jensen, D.; Schmidt, O.; Trakhtenberg, E.; Suthar, K.; Moog, E. R.; Pile, G.; Gluskin, E.

As part of the R&D program of the LCLS-II project, a novel 3.4-meter-long undulator prototype with horizontal magnetic field and dynamic force compensation has recently been developed at the Advanced Photon Source (APS). Some previous steps in this development were the shorter 0.8-meter-long and 2.8-meter-long prototypes. Extensive mechanical and magnetic testing was carried out for each prototype, and each prototype was magnetically tuned using magnetic shims. Furthermore, the resulting performance of the 3.4-meter-long undulator prototype meets all requirements for the LCLS-II insertion device, including limits on the field integrals, phase errors, higher-order magnetic moments, and electron-beam trajectory for all operational gaps, as well as the reproducibility and accuracy of the gap settings.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES)
• Grant/Contract Number: AC02-06CH11357
• OSTI ID: 1341264
• Alternate ID(s): OSTI ID: 1393494
• Journal Information: Physical Review Accelerators and Beams, Journal Name: Physical Review Accelerators and Beams Vol. 20 Journal Issue: 1; ISSN 2469-9888
• Publisher: American Physical Society
• Country of Publication: United States
• Language: English

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