Author: Tanabe, T.
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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