Author: Assell, D.
Paper Title Page
WEPA77 A New PCB Rotating Coil at NSLS-II 816
  • M. Musardo, J. Avronsart, F.A. DePaola, L. Doom, R. Faussete, F.C. Lincoln, S.K. Sharma, T. Tanabe
    BNL, Upton, New York, USA
  • D. Assell, J. DiMarco
    Fermilab, Batavia, Illinois, USA
  • A. Banerjee
    SBU, Stony Brook, New York, USA
  • C.L. Doose, A.K. Jain
    ANL, Lemont, Illinois, USA
  Several R&D projects are underway at NSLS-II towards an upgrade of its storage ring with a new lattice that will use high field magnets with small bores of 16-22 mm. A large fraction of the high field magnets are expected to be of permanent magnet technology that will require precise magnetic measurements and field harmonics corrections. A new magnetic measurement bench has been built based on a printed circuit board (PCB) coil of 12 mm diameter and 270 mm active length. This PCB coil has the capabil-ity of measuring field quality to a level of 10 ppm of the main field up to the 15th harmonic with a sensitivity between 0.01 m2 and 0.02 m2 at the reference radius of 5 mm. This paper will describe the main features of the rotating coil bench and discuss the measurement results of a permanent-magnet Halbach quadrupole of 12.7 mm bore diameter.  
DOI • reference for this paper ※ doi:10.18429/JACoW-NAPAC2022-WEPA77  
About • Received ※ 28 July 2022 — Revised ※ 06 August 2022 — Accepted ※ 12 August 2022 — Issue date ※ 29 August 2022
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