Author: Rodin, V.
Paper Title Page
WEPOTK032 Fast Electromagnetic Models of Existing Beamline Simulations 2130
 
  • S. Padden, E. Kukstas, P. Pusa, V. Rodin, C.P. Welsch
    The University of Liverpool, Liverpool, United Kingdom
  • S. Padden, V. Rodin, C.P. Welsch
    Cockcroft Institute, Warrington, Cheshire, United Kingdom
  
  The AD-ELENA complex decelerates antiprotons to ener- gies of 100 keV before transport to experiments through elec- trostatic transfer lines. Transfer line optics are traditionally designed from a lattice based approach and are unaffected by external effects. Presented is a method of rapidly proto- typing MAD-X simulations into G4Beamline models which propagate particles via electromagnetic fields rather than idealised optical lattice parameters. The transfer line to the ALPHA experiment is simulated in this approach. Due to the presence of fringe fields disagreement is found between the two models. Using an error minimisation technique, revised quadrupole strengths are found which improve agreement by 30% without any manual adjustment.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2022-WEPOTK032  
About • Received ※ 06 June 2022 — Revised ※ 13 June 2022 — Accepted ※ 15 June 2022 — Issue date ※ 20 June 2022
Cite • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)  
 
WEPOTK031 Low-Energy Negative Ion Injection Beamline for Experiments with Antiprotonic Atoms at AEgIS 2126
 
  • V. Rodin, A. Farricker, C.P. Welsch
    The University of Liverpool, Liverpool, United Kingdom
  • G. Cerchiari
    Institut für Experimentalphysik, Universtität Innsbruck, Innsbruck, Austria
  • M. Doser, G. Khatri
    CERN, Meyrin, Switzerland
  • G. Kornakov
    Warsaw University of Technology, Warsaw, Poland
  • C.P. Welsch
    Cockcroft Institute, Warrington, Cheshire, United Kingdom
  
  Funding: Research was funded by Warsaw University of Technology within the Excellence Initiative: Research University (IDUB) programme
Interaction of low-energy antiprotons with nuclear targets provided fundamental knowledge about proton and neutron densities of many nuclei through the capture process, cascade on lower electron orbits, and annihilation with the nucleon. The expelled electrons produce X-rays and with the recoil particles after annihilation, thus, a sufficient amount of information can be obtained about this interaction. However, all previous experiments were done via formation of antiprotonic atoms in solid or gaseous targets. Therefore, annihilation occurs prior reaching the S or P orbital levels and precise measurements are missing. Recently, AEgIS collaboration proposed a conceptually new experimental scheme. The creation of cold antiprotonic atoms in a vacuum guarantees the absence of the Stark effect. And with the sub-ns timing and synchronization, the previous experimental obstacles would be resolved. This will allow studying atomic properties, evolution, and fragmentation process with improved precision and extended lifetimes. In this contribution, we present an overview of the experimental scheme as well as various aspects of negative ion injection beamline into the AEgIS experiment. 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2022-WEPOTK031  
About • Received ※ 08 June 2022 — Accepted ※ 10 June 2022 — Issue date ※ 13 June 2022  
Cite • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)