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Construction of Cryogen-Free 4.3T Superconducting Wiggler for NSLS-II Ring

Journal Article · · IEEE Transactions on Applied Superconductivity
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  1. Brookhaven National Lab. (BNL), Upton, NY (United States)
  2. Bilfinger Noell GmbH (Germany)
+ Show Author Affiliations

With the 3 GeV electron beam energy for the National Synchrotron Light Source II (NSLS-II) ring, only superconducting wigglers (SCW) producing greater than 4T peak field can cover the photon energy range of 20 keV and 200 keV with sufficient number of photons. The High energy Engineering X-ray (HEX) Diffraction beamline, which is primarily funded by the New York State Energy Research and Development Authority (NYSERDA) and NSLS-II, will be equipped with a 1.2m-long SCW with 70 mm period length and 4.3 T on-axis field. This SCW is free from the use of liquid Helium and is cooled only with cryo-coolers. The Electron Beam Chamber (EBC) with vertical aperture of 8 mm is made from 316LN stainless steel and copper plating is applied both surface and +-12.5mm wide from the center in the inner surface. The expected heat load from the electron beam of the NSLS-II ring is estimated to be 10 W/m. Here, we describe the design principles and engineering challenges for the device.

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:
1889635
Report Number(s):
BNL-223484-2022-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

References (3)

Coupling impedance of beam pipes of general cross section journal January 1993
Quench analysis of a superconducting magnet with 98 coils connected in series journal December 2003
Characterization of 30-cm-Long Superconducting Undulator Coils With the Magnetic Measurement System CASPER II journal June 2016

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Related Subjects

36 MATERIALS SCIENCE
accelerator magnets
electron beams
heating systems
photonics
power supplies
superconducting magnets
undulators
voltage measurement