Author: Makino, K.
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TUPMY012 Hybrid Methods for Simulation of Muon Ionization Cooling Channels 1568
  • J.D. Kunz
    IIT, Chicago, Illinois, USA
  • M. Berz, K. Makino
    MSU, East Lansing, Michigan, USA
  • P. Snopok
    Illinois Institute of Technology, Chicago, Illlinois, USA
  Funding: Work is supported by the U.S. Department of Energy.
COSY Infinity is an arbitrary-order beam dynamics simulation and analysis code. It can determine high-order transfer maps of combinations of particle optical elements of arbitrary field configurations. New features are being developed for inclusion in COSY to follow the distribution of charged particles through matter. To study in detail some of the properties of muons passing through material, the transfer map approach alone is not sufficient. The interplay of beam optics and atomic processes must be studied by a hybrid transfer map–Monte Carlo approach in which transfer map methods describe the deterministic behavior of the particles in the accelerator channel, and Monte Carlo methods are used to model the stochastic processes intrinsic to liquid and solid absorbers. The advantage of the new approach is that the vast majority of the dynamics is represented by fast application of the high-order transfer map of an entire element and accumulated stochastic effects. The gains in speed are expected to simplify the optimization of muon cooling channels which are usually very computationally demanding. Progress on the development of the required algorithms is reported.
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-TUPMY012  
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THPMR006 Muon Beam Tracking and Spin-Orbit Correlations for Precision g-2 Measurements 3397
  • D. Tarazona, M. Berz, R. Hipple, K. Makino, M.J. Syphers
    MSU, East Lansing, Michigan, USA
  • M.J. Syphers
    Fermilab, Batavia, Illinois, USA
  The main goal of the Muon g-2 Experiment (g-2) at Fermilab is to measure the muon anomalous magnetic moment to unprecedented precision. This new measurement will allow to test the completeness of the Standard Model (SM) and to validate other theoretical models beyond the SM. The close interplay of the understanding of particle beam dynamics and the preparation of the beam properties with the experimental measurement is tantamount to the reduction of systematic errors in the determination of the muon anomalous magnetic moment. We describe progress in developing detailed calculations and modeling of the muon beam delivery system in order to obtain a better understanding of spin-orbit correlations, nonlinearities, and more realistic aspects that contribute to the systematic errors of the g-2 measurement. Our simulation is meant to provide statistical studies of error effects and quick analyses of running conditions for when g-2 is taking beam, among others. We are using COSY, a differential algebra solver developed at Michigan State University that will also serve as an alternative to compare results obtained by other simulation teams of the g-2 Collaboration.  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPMR006  
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