Keyword: closed-orbit
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WEPOA03 Synchrotron Oscillation Derived From Three Components Hamiltonian ion, synchrotron, betatron, heavy-ion 690
  • K. Jimbo
    Kyoto University, Kyoto, Japan
  • H. Souda
    Gunma University, Heavy-Ion Medical Research Center, Maebashi-Gunma, Japan
  The Hamiltonian, which was composed of coasting, synchrotron and betatron motions, clarified the synchro-betatron resonant coupling mechanism in a storage ring*. The equation for the synchrotron motion was also obtained from the Hamiltonian. It shows that the so-called synchrotron oscillation is an oscillation around the revolution frequency as well as of the kinetic energy of the on-momentum particle. The detectable synchrotron oscillation is a horizontal oscillation on the laboratory frame.
*K.Jimbo, Physical Review Special Topics - Accelerator and Beams 19, 010102 (2016).
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THPOA24 Testing of Advanced Technique for Linear Lattice and Closed Orbit Correction by Modeling Its Application for IOTA Ring at Fermilab ion, experiment, lattice, insertion 1155
  • A.L. Romanov
    Fermilab, Batavia, Illinois, USA
  Many modern and most future accelerators rely on precise configuration of lattice and trajectory. Integrable Optics Test Accelerator (IOTA) at Fermilab that is coming to final stages of construction will be used to test advanced approaches of control over particles dynamics. Various experiments planned at IOTA require high flexibility of lattice configuration as well as high precision of lattice and closed orbit control. Dense element placement does not allow to have ideal configuration of diagnostics and correctors for all planned experiments. To overcome this limitations advanced method of lattice analysis is proposed that can also be beneficial for other machines. Developed algorithm is based on LOCO approach, extended with various sets of other experimental data, such as dispersion, BPM-to-BPM phase advances, beam shape information from synchrotron light monitors, responses of closed orbit bumps to variations of focusing elements and other. Extensive modeling of corrections for a big number of random seed errors is used to illustrate benefits from developed approach.  
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