• D. Eversmann
  • V. Hejny
  • F. Hinder
  • A. Kacharava
  • J. Pretz
  • F. Rathmann
  • M. Rosenthal
  • F. Trinkel
  • W. Augustyniak
  • Z. Bagdasarian
  • M. Bai
  • W. Bernreuther
  • S. Bertelli
  • M. Berz
  • J. Bsaisou
  • S. Chekmenev
  • D. Chiladze
  • G. Ciullo
  • M. Contalbrigo
  • J. de Vries
  • S. Dymov
  • R. Engels
  • F. M. Esser
  • O. Felden
  • M. Gaisser
  • R. Gebel
  • H. Glueckler
  • F. Goldenbaum
  • K. Grigoryev
  • D. Grzonka
  • G. Guidoboni
  • C. Hanhart
  • D. Heberling
  • N. Hempelmann
  • J. Hetzel
  • R. Hipple
  • D. Hoelscher
  • A. Ivanov
  • V. Kamerdzhiev
  • B. Kamys
  • I. Keshelashvili
  • A. Khoukaz
  • I. Koop
  • H-J. Krause
  • S. Krewald
  • A. Kulikov
  • A. Lehrach
  • P. Lenisa
  • B. Lorentz
  • P. Maanen
  • G. Macharashvili
  • A. Magiera
  • R. Maier
  • K. Makino
  • B. Marianski
  • D. Mchedlishvili
  • Ulf-G. Meiner
  • S. Mey
  • A. Nass
  • G. Natour
  • N. Nikolaev
  • A. Nogga
  • K. Nowakowski
  • A. Pesce
  • D. Prasuhn
  • J. Ritman
  • Z. Rudy
  • A. Saleev
  • Y. Semertzidis
  • Y. Senichev
  • V. Shmakova
  • A. Silenko
  • J. Slim
  • H. Soltner
  • A. Stahl
  • R. Stassen
  • M. Statera
  • E. Stephenson
  • H. Stockhorst
  • H. Straatmann
  • H. Stroeher
  • R. Talman
  • P. Thoerngren Engblom
  • A. Trzcinski
  • Yu. Uzikov
  • Yu. Valdau
  • E. Valetov
  • A. Vassiliev
  • C. Weidemann
  • C. Wilkin
  • A. Wirzba
  • A. Wronska
  • P. Wuestner
  • M. Zakrzewska
  • P. Zupranski
  • D. Zyuzin
A new method to determine the spin tune is described and tested. In an ideal planar magnetic ring, the spin tune – defined as the number of spin precessions per turn – is given by νs = γ • G (γ is the Lorentz factor, G the magnetic anomaly). For 970MeV/c deuterons coherently recessing with a frequency of ≈120 kHz in the Cooler Synchrotron COSY, the spin tune is deduced from the up-down asymmetry of deuteron carbon scattering. In a time interval of 2.6 s, the spin tune was determined with a precision of the order 10−8, and to 1•10−10 for a continuous 100 s accelerator cycle. This renders the presented method a new precision tool for accelerator physics: controlling the spin motion of particles to high precision is mandatory, in particular, for the measurement of electric dipole moments of charged particles in a storage ring.
Original languageEnglish
Number of pages6
JournalPhysical Review Letters
Volume115
Issue number9
DOIs
StatePublished - 2015

    Research areas

  • Magnetic ring, the spin tune, Cooler Synchrotron COSY, spin tune, precision tool for accelerator physics, controlling the spin motion, the measurement of electric dipole moments

ID: 3930984