Phasing Magnet for CSX-2 Beamline at NSLS-II

Journal Article · 28 February 2022 · IEEE Transactions on Applied Superconductivity

DOI: https://doi.org/10.1109/tasc.2022.3155502 · OSTI ID:1889634

Musardo, Marco  ^[1]; Tanabe, Toshiya  ^[1]; Rank, J. ^[1]; Harder, D. ^[1]; Corwin, T. ^[1]; Rhein, C. ^[1]

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1. Brookhaven National Lab. (BNL), Upton, NY (United States)

A phasing magnet has been developed at National Synchrotron Light Source II (NSLS-II) for the Coherent Soft X-ray Scattering (CSX) beamline. The phasing magnet will be located at the center of the straight section in between two identical and independent variably polarized APPLE-II devices. Based on Permanent Magnet technology, the phasing magnet has been designed to achieve the required electron beam delay to properly adjust the phase matching of these two consecutive EPUs (Elliptically Polarizing Undulators) and ensure a positive interference between the photon beam emitted in each device. Also this paper will describe the mechanical and magnetic design together with the final field measurements and magnetic tuning results. Also, the spectral performance of the two EPUs and the method used to properly set the field strength of the phasing magnet for any given radiation wavelength and polarization mode will be presented as well.

• Research Organization: Brookhaven National Laboratory (BNL), Upton, NY (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES)
• Grant/Contract Number: SC0012704
• OSTI ID: 1889634
• Report Number(s): BNL-223483-2022-JAAM
• Journal Information: IEEE Transactions on Applied Superconductivity, Journal Name: IEEE Transactions on Applied Superconductivity Journal Issue: 6 Vol. 32; ISSN 1051-8223
• Publisher: IEEECopyright Statement
• Country of Publication: United States
• Language: English