Author: Cease, H.
Paper Title Page
THPAB051 Vertical Septum Magnet Design for the APS Upgrade 3862
 
  • M. Abliz, M. Borland, H. Cease, G. Decker, A.K. Jain, M.S. Jaski, M. Kasa, J.S. Kerby, U. Wienands, A. Xiao
    ANL, Lemont, Illinois, USA
  • J.W. Amann
    SLAC, Menlo Park, California, USA
  • D.J. Harding
    Fermilab, Batavia, Illinois, USA
 
  The ver­ti­cal in­jec­tion scheme pro­posed for the APS Up­grade (APS-U) Pro­ject re­quires a chal­leng­ing sep­tum mag­net that must meet strin­gent beam physics, mag­netic field leak­age, and vac­uum re­quire­ments. The cur­rent it­er­a­tion of this mag­net de­sign in­cludes an en­larged stored-beam cham­ber aper­ture of 9 mm x 12 mm and a re­duc­tion of the sep­tum thick­ness to 1.5 mm. The en­larged aper­ture ac­com­mo­dates a non-evap­orable get­ter (NEG)-coated stored beam cham­ber to bet­ter achieve the re­quired vac­uum. A pro­to­type sep­tum mag­net has been built and mea­sure­ments con­firm the can­cel­la­tion of a peak leak­age field even though the value is six times larger than the de­sign. The leak­age field mea­sured at the up­stream (US) end can­cels the down­stream (DS) end as was ex­pected by de­sign. The mea­sured and sim­u­lated leak­age field and the stored beam tra­jec­to­ries are re­ported.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-THPAB051  
About • paper received ※ 14 May 2021       paper accepted ※ 01 September 2021       issue date ※ 27 August 2021  
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