Author: Laface, E.
Paper Title Page
TUPAB218 Fully Covariant Two-Particle Space-Charge Dynamics Using the Liénard-Wiechert Potentials 1931
 
  • B.T. Folsom, E. Laface
    ESS, Lund, Sweden
 
  Space charge mod­els typ­i­cally as­sume in­stan­ta­neous prop­a­ga­tion of the elec­tro­mag­netic fields be­tween par­ti­cles in a bunch, de­scrib­ing forces in the frame of the ref­er­ence par­ti­cle. In this paper, we con­struct a space-charge track­ing code from the re­tarded Liénard-Wiechert po­ten­tials, which are co­vari­ant by de­sign, in a La­grangian for­mu­la­tion. Such po­ten­tials are ma­nip­u­lated with co­vari­ant de­riv­a­tives to pro­duce the nec­es­sary equa­tions of mo­tion that will be solved in a test sys­tem of two par­ti­cles at var­i­ous rel­a­tive en­er­gies. Mag­netic di­pole mo­ment dy­nam­ics are also eval­u­ated where ap­plic­a­ble.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB218  
About • paper received ※ 19 May 2021       paper accepted ※ 19 July 2021       issue date ※ 11 August 2021  
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TUPAB237 Symplectic Tracking Through Field Maps 1992
 
  • S.D. Webb
    RadiaSoft LLC, Boulder, Colorado, USA
  • B.T. Folsom, E. Laface, R. Miyamoto
    ESS, Lund, Sweden
 
  For many ap­pli­ca­tions, it is nec­es­sary to track par­ti­cles using field maps, in­stead of an an­a­lytic rep­re­sen­ta­tion of the fields which is typ­i­cally not avail­able. These field maps come about while de­sign­ing el­e­ments such as re­al­is­tic mag­nets or ra­diofre­quency cav­i­ties, and rep­re­sent the field geom­e­try on a mesh in space. How­ever, sim­ple in­ter­po­la­tion of the fields from the field maps does not guar­an­tee that the re­sult­ing track­ing scheme sat­is­fies the sym­plec­tic con­di­tion. Here we pre­sent a gen­eral method to de­com­pose the field-map po­ten­tial in the sum of in­ter­po­lat­ing func­tions that pro­duces, by con­struc­tion, a sym­plec­tic in­te­gra­tor.  
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DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB237  
About • paper received ※ 19 May 2021       paper accepted ※ 22 July 2021       issue date ※ 22 August 2021  
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WEPAB319 Open XAL Status Report 2021 3421
 
  • N. Milas, J.F. Esteban Müller, E. Laface, Y. Levinsen
    ESS, Lund, Sweden
  • T.V. Gorlov, A.P. Shishlo, A.P. Zhukov
    ORNL, Oak Ridge, Tennessee, USA
 
  The Open XAL ac­cel­er­a­tor physics soft­ware plat­form is being de­vel­oped through in­ter­na­tional col­lab­o­ra­tion among sev­eral fa­cil­i­ties since 2010. The goal of the col­lab­o­ra­tion is to es­tab­lish Open XAL as a multi-pur­pose soft­ware plat­form sup­port­ing a broad range of tool and ap­pli­ca­tion de­vel­op­ment in ac­cel­er­a­tor physics and high-level con­trol (Open XAL also ships with a suite of gen­eral-pur­pose ac­cel­er­a­tor ap­pli­ca­tions). This paper dis­cusses progress in beam dy­nam­ics sim­u­la­tion, new RF mod­els, and up­dated ap­pli­ca­tion frame­work along with new generic ac­cel­er­a­tor physics ap­pli­ca­tions. We pre­sent the cur­rent sta­tus of the pro­ject, a roadmap for con­tin­ued de­vel­op­ment, and an overview of the pro­ject sta­tus at each par­tic­i­pat­ing fa­cil­ity.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-WEPAB319  
About • paper received ※ 19 May 2021       paper accepted ※ 21 July 2021       issue date ※ 11 August 2021  
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