Author: Machida, S.
Paper Title Page
THPAB090 Algorithm to Calculate Off-Plane Magnetic Field From an on-Plane Field Map 3928
 
  • N. Tsoupas, J.S. Berg, F. Méot, V. Ptitsyn, D. Trbojevic
    BNL, Upton, Long Island, New York, USA
  • S.A. Kahn
    Muons, Inc, Illinois, USA
  • S. Machida
    STFC/RAL/ASTeC, Chilton, Didcot, Oxon, United Kingdom
  
  Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy.
We present an algorithm to calculate the off-plane components of the magnetic field from the on-plane components of the magnetic field which are measured on a grid of the plane. The algorithm, which is a general one and it is not restricted on a mid-plane symmetry, is based on the Taylor series expansion of the magnetic field components in terms of the normal to the plane location. The coefficients of the Taylor series expansion are expressed in terms of the on-plane derivatives of the field components which are generated by the measured magnetic field components on the grid of the plane. The algorithm is use in the RATRACE computer code[*] and has been used[**] on a dipole magnet with median plane symmetry.
* S.B. Kowalski and H.A. Enge The Ion-Optical Program Raytrace NIM A258 (1987) 407
** N. Tsoupas et. al. Effects of Dipole Magnet Inhomogeneity on the Beam Ellipsoid NIM A258 (1987) 421-425
 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPAB090  
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THPVA027 Commissioning and First Results of the IBEX Paul Trap 4481
 
  • S.L. Sheehy, E. Carr, L. Martin
    JAI, Oxford, United Kingdom
  • K. Budzik
    Warsaw University, Warsaw, Poland
  • D.J. Kelliher, S. Machida
    STFC/RAL/ASTeC, Chilton, Didcot, Oxon, United Kingdom
  • C.R. Prior
    STFC/RAL/ISIS, Chilton, Didcot, Oxon, United Kingdom
  
  The Intense Beam Experiment (IBEX) is a linear Paul trap designed to replicate the dynamics of intense particle beams in accelerators. Similar to the S-POD apparatus at Hiroshima University, IBEX is a small scale experiment which has been constructed and recently commissioned at the Rutherford Appleton Laboratory in the UK. Its aim is to support theoretical studies of next-generation high intensity proton and ion accelerators, complementing existing computer simulation approaches. Here we report on the status of commissioning and first results obtained.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPVA027  
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