Development of the high energy engineering X-ray (HEX) superconducting wiggler, magnetic measurement, installation, and commissioning

Journal Article · Mon Jun 12 00:00:00 EDT 2023 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/5.0146964· OSTI ID:1992852

Tanabe, T.  ^[1]; Corwin, T.  ^[1]; Hidas, D.  ^[1]; Musardo, M.  ^[1]; Migliorino, D.  ^[1]; Rank, J. ^[1]; Seegitz, M.  ^[1]; Todd, R. ^[1]; Hidaka, Y.  ^[1]; Hobl, A.  ^[2]; Grau, A.  ^[3]

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1. Brookhaven National Laboratory (BNL), Upton, NY (United States)
2. Bilfinger Noell GmbH (Germany)
3. Karlsruhe Inst. of Technology (KIT) (Germany)

The High energy Engineering X-ray (HEX) diffraction beamline at the National Synchrotron Light Source II (NSLS-II) at Brookhaven National Lab (BNL) is the first high-energy beamline capable of reaching 200 keV for a monochromatic beam. With the 3 GeV electron beam energy for the NSLS-II ring, only the superconducting wiggler (SCW) producing greater than 4 T peak field can cover these ranges with a sufficient number of photons. The 1.2 m-long HEX-SCW has a period length of 70 mm and a field strength on-axis of 4.3 T. It utilizes no liquid helium, and the vertical aperture size of the electron beam vacuum chamber is 8 mm. Unlike regular undulators/wigglers, there is no standard configuration for the magnetic measurement system for superconducting insertion devices. The NSLS-II Insertion Devices group has developed, in collaboration with the vacuum group, a novel in-vacuum Hall mapper with a 1.75 m in-vacuum linear motor and an in-vacuum flip coil system utilizing many commercial-off-the-shelf products. The measurements were conducted at the BNL, and the device was installed in the ring and commissioned. Here, this paper provides a description of the SCW and its magnetic measurement systems, as well as a brief account of the installation and commissioning efforts.

• 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: 1992852
• Report Number(s): BNL-224602-2023-JAAM; TRN: US2404303
• Journal Information: Review of Scientific Instruments, Vol. 94, Issue 6; ISSN 0034-6748
• Publisher: American Institute of Physics (AIP)
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
synchrotron radiation
calibration methods
insertion device
Helmholtz coil
cooling technology
mechanical instruments
computer aided design