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Hempelmann, N. [Author]; Hejny, V. [Author]; Ciullo, G. [Author]; Dymov, S. [Author]; Etzkorn, F.-J. [Author]; Eversmann, D. [Author]; Gaisser, M. [Author]; Gebel, R. [Author]; Grigoryev, K. [Author]; Grzonka, D. [Author]; Guidoboni, G. [Author]; Hahnraths - von der Gracht, Tanja [Author]; Pretz, J. [Author]; Heberling, D. [Author]; Hetzel, J. [Author]; Hinder, F. [Author]; Kacharava, A. [Author]; Kamerdzhiev, V. [Author]; Keshelashvili, I. [Author]; Koop, I. [Author]; Kulikov, A. [Author]; Lehrach, A. [Author]; Lenisa, P. [Author]; Stephenson, E. [Author]; [...]

Phase Locking the Spin Precession in a Storage Ring

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  • Media type: E-Article
  • Title: Phase Locking the Spin Precession in a Storage Ring
  • Contributor: Hempelmann, N. [Author]; Hejny, V. [Author]; Ciullo, G. [Author]; Dymov, S. [Author]; Etzkorn, F.-J. [Author]; Eversmann, D. [Author]; Gaisser, M. [Author]; Gebel, R. [Author]; Grigoryev, K. [Author]; Grzonka, D. [Author]; Guidoboni, G. [Author]; Hahnraths - von der Gracht, Tanja [Author]; Pretz, J. [Author]; Heberling, D. [Author]; Hetzel, J. [Author]; Hinder, F. [Author]; Kacharava, A. [Author]; Kamerdzhiev, V. [Author]; Keshelashvili, I. [Author]; Koop, I. [Author]; Kulikov, A. [Author]; Lehrach, A. [Author]; Lenisa, P. [Author]; Stephenson, E. [Author]; [...]
  • Published: APS, 2017
  • Published in: Physical review letters 119(1), 014801 (2017). doi:10.1103/PhysRevLett.119.014801
  • Language: English
  • DOI: https://doi.org/10.1103/PhysRevLett.119.014801
  • ISSN: 0031-9007; 1079-7114; 1092-0145
  • Origination:
  • Footnote: Diese Datenquelle enthält auch Bestandsnachweise, die nicht zu einem Volltext führen.
  • Description: This Letter reports the successful use of feedback from a spin polarization measurement to the revolution frequency of a 0.97 GeV/c bunched and polarized deuteron beam in the Cooler Synchrotron (COSY) storage ring in order to control both the precession rate (≈121 kHz) and the phase of the horizontal polarization component. Real time synchronization with a radio frequency (rf) solenoid made possible the rotation of the polarization out of the horizontal plane, yielding a demonstration of the feedback method to manipulate the polarization. In particular, the rotation rate shows a sinusoidal function of the horizontal polarization phase (relative to the rf solenoid), which was controlled to within a 1 standard deviation range of σ=0.21 rad. The minimum possible adjustment was 3.7 mHz out of a revolution frequency of 753 kHz, which changes the precession rate by 26 mrad/s. Such a capability meets a requirement for the use of storage rings to look for an intrinsic electric dipole moment of charged particles.
  • Access State: Open Access