APS » Journals » Phys. Rev. ST Accel. Beams » Volume 7 » Issue 2
< Previous article | Next article >

Phys. Rev. ST Accel. Beams 7, 024002 (2004) [5 pages]

Spin manipulation of 1.94  GeV/c polarized protons stored in the COSY cooler synchrotron

Download: PDF (416 kB) or gzip'ed PS (408 kB) Export: BibTeX or EndNote (RIS)

V. S. Morozov, A. D. Krisch, M. A. Leonova, R. S. Raymond, V. K. Wong, and K. Yonehara
Spin Physics Center, University of Michigan, Ann Arbor, Michigan 48109-1120, USA

U. Bechstedt, R. Gebel, A. Lehrach, B. Lorentz, R. Maier, D. Prasuhn, A. Schnase, and H. Stockhorst
Forschungszentrum Jülich, Institut für Kernphysik, Postfach 1913, D-52425 Jülich, Germany

D. Eversheim, F. Hinterberger, H. Rohdjeß, and K. Ulbrich
Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, D-53115 Bonn, Germany

Received 4 November 2003; published 25 February 2004

We recently studied spin flipping of a 1.94  GeV/c vertically polarized proton beam at COSY in Jülich, Germany. We swept an rf-dipole’s frequency through an rf-induced spin resonance to flip the beam’s polarization direction. After determining the resonance’s frequency, we varied the dipole’s strength, frequency range, and frequency ramp time. At the rf-dipole’s maximum strength, and optimum frequency range and ramp time, we measured a spin-flip efficiency of 99.3%±0.1%. This result indicates that an rf dipole may allow efficient spin flipping in high energy proton rings.


©2004 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevSTAB.7.024002
DOI: 10.1103/PhysRevSTAB.7.024002
PACS: 29.27.Bd, 29.27.Hj, 41.75.Ak

See Also

Comment: M. Bai, W. W. MacKay, and T. Roser, Comment on “Spin manipulation of 1.94  GeV/c polarized protons stored in the COSY cooler synchrotron”, Phys. Rev. ST Accel. Beams 8, 099001 (2005)

Reply: V. S. Morozov, A. D. Krisch, M. A. Leonova, R. S. Raymond, V. K. Wong, K. Yonehara, U. Bechstedt, R. Gebel, A. Lehrach, B. Lorentz, R. Maier, D. Prasuhn, A. Schnase, H. Stockhorst, D. Eversheim, F. Hinterberger, H. Rohdjeß, and K. Ulbrich, Reply to “Comment on ‘Spin manipulation of 1.94  GeV/c polarized protons stored in the COSY cooler synchrotron’ ”, Phys. Rev. ST Accel. Beams 8, 099002 (2005)

[ Abstract  |  Previous article  |  Next article  |  Issue 2 ]