Author: Cathey, B.L.
Paper Title Page
MOPA17 Symplectic Particle Tracking in a Thick Nonlinear McMillan Lens for the Fermilab Integrable Optics Test Accelerator (IOTA) 83
 
  • B.L. Cathey, G. Stancari, T. Zolkin
    Fermilab, Batavia, Illinois, USA
  
  Funding: This manuscript has been authored by Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the U.S. Department of Energy, Office of Science, Office of High Energy Physics.
The McMil­lan sys­tem is a novel method to in­crease the tune spread of a beam with­out de­creas­ing its dy­namic aper­ture due to the sys­tem’s in­te­gra­bil­ity. While the ideal sys­tem is based on an in­fi­nitely thin kick, the phys­i­cal de­sign re­quires a thick elec­tron lens, in­clud­ing a so­le­noid. Par­ti­cle trans­port through the lens is dif­fi­cult to sim­u­late due to the na­ture of the force on the cir­cu­lat­ing beam. This paper demon­strates ac­cu­rate sim­u­la­tion of a thick McMil­lan lens in a so­le­noid using sym­plec­tic in­te­gra­tors de­rived from Yoshida’s method. 		 
poster icon Poster MOPA17 [2.290 MB]  
DOI • reference for this paper ※ doi:10.18429/JACoW-NAPAC2022-MOPA17  
About • Received ※ 03 August 2022 — Revised ※ 04 August 2022 — Accepted ※ 09 August 2022 — Issue date ※ 09 October 2022
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WEYE6 Thermionic Sources for Electron Cooling at IOTA 588
 
  • M.K. Bossard, Y.K. Kim
    University of Chicago, Chicago, Illinois, USA
  • N. Banerjee, J.A. Brandt
    Enrico Fermi Institute, University of Chicago, Chicago, Illinois, USA
  • B.L. Cathey, S. Nagaitsev, G. Stancari
    Fermilab, Batavia, Illinois, USA
  • M.A. Krieg
    Saint Olaf College, Northfield, MN, USA
  
  We are plan­ning a new elec­tron cool­ing ex­per­i­ment at the In­te­grable Op­tics Test Ac­cel­er­a­tor (IOTA) at Fer­mi­lab for cool­ing ~2.5 MeV pro­tons in the pres­ence of in­tense space-charge. Here we pre­sent the sim­u­la­tions and de­sign of a thermionic elec­tron source for cool­ing at IOTA. We par­tic­u­larly dis­cuss pa­ra­me­ters of the thermionic source elec­trodes, as well as the sim­u­la­tion re­sults. We also pre­sent a new elec­tron source test-stand at the Uni­ver­sity of Chicago, which will be used to test the new thermionic elec­tron source, as well as other elec­tron sources. In ad­di­tion, we dis­cuss re­sults from an­a­lyz­ing the test stand op­er­a­tions with a cur­rently ex­ist­ing elec­tron source. Fur­ther­more, we pre­sent fu­ture steps for the test stand as well as pro­duc­tion and com­mis­sion­ing of the thermionic source at IOTA.  
slides icon Slides WEYE6 [3.182 MB]  
DOI • reference for this paper ※ doi:10.18429/JACoW-NAPAC2022-WEYE6  
About • Received ※ 02 August 2022 — Revised ※ 07 August 2022 — Accepted ※ 08 August 2022 — Issue date ※ 28 August 2022
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