Phase Locking the Spin Precession in a Storage Ring

Hempelmann, N.; Etzkorn, F.-J.; Müller, F.; Keshelashvili, I.; Maanen, P.; Lomidze, N.; Weidemann, C.; Silenko, A.; Grigoryev, K.; Gebel, R.; Guidoboni, G.; Augustyniak, W.; Bagdasarian, Z.; Lorentz, B.; Bai, M.; Wrońska, A.; Stroeher, Hans; Hinder, F.; Tabidze, M.; Trinkel, F.; Hahnraths - von der Gracht, Tanja; Pretz, J.; Thörngren Engblom, P.; Stockhorst, H.; Hetzel, J.; Lenisa, P.; Hejny, V.; Koop, I.; Wüstner, P.; Barion, L.; Żurek, M.; Magiera, A.; Chekmenev, S.; Soltner, H.; Shmakova, V.; Grzonka, D.; Dymov, S.; Stassen, R.; Valetov, E.; Berz, M.; Lehrach, A.; Gaisser, M.; Tagliente, G.; Mey, S.; Uzikov, Yu.; Heberling, D.; Nikolaev, N. N.; Rathmann, F.; Kamerdzhiev, V.; Schmidt, V.; Pesce, A.; Saleev, A.; Stephenson, E.; Eversmann, D.; Nass, A.; Macharashvili, G.; Talman, R.; Valdau, Yu.; Mchedlishvili, D.; Slim, J.; Kacharava, A.; Semertzidis, Y.; Prasuhn, D.; Ciullo, G.; Kulikov, A.; Zuprański, P.; Vassiliev, A.; Stahl, A.; Rosenthal, M.

doi:10.1103/PhysRevLett.119.014801

Journal Article

FZJ-2017-04486

Phase Locking the Spin Precession in a Storage Ring

Hempelmann, N.FZJ* ; Hejny, V.FZJ* ; Pretz, J. (Corresponding author)FZJ* ; Stephenson, E. ; Augustyniak, W. ; Bagdasarian, Z.FZJ* ; Bai, M.FZJ* ; Barion, L. ; Berz, M. ; Chekmenev, S. ; Ciullo, G. ; Dymov, S.FZJ* ; Etzkorn, F.-J.FZJ* ; Eversmann, D. ; Gaisser, M. ; Gebel, R.FZJ* ; Grigoryev, K.FZJ* ; Grzonka, D.FZJ* ; Guidoboni, G. ; Hahnraths - von der Gracht, T.FZJ* ; Heberling, D. ; Hetzel, J.FZJ* ; Hinder, F.FZJ* ; Kacharava, A.FZJ* ; Kamerdzhiev, V.FZJ* ; Keshelashvili, I.FZJ* ; Koop, I. ; Kulikov, A. ; Lehrach, A.FZJ* ; Lenisa, P. ; Lomidze, N. ; Lorentz, B.FZJ* ; Maanen, P. ; Macharashvili, G.FZJ* ; Magiera, A. ; Mchedlishvili, D.FZJ* ; Mey, S. ; Müller, F.FZJ* ; Nass, A.FZJ* ; Nikolaev, N. N. ; Pesce, A. ; Prasuhn, D.FZJ* ; Rathmann, F.FZJ* ; Rosenthal, M. ; Saleev, A.FZJ* ; Schmidt, V.FZJ* ; Semertzidis, Y. ; Shmakova, V. ; Silenko, A. ; Slim, J. ; Soltner, H.FZJ* ; Stahl, A. ; Stassen, R.FZJ* ; Stockhorst, H.FZJ* ; Stroeher, H.FZJ* ; Tabidze, M. ; Tagliente, G. ; Talman, R. ; Thörngren Engblom, P. ; Trinkel, F.FZJ* ; Uzikov, Y.FZJ* ; Valdau, Y.FZJ* ; Valetov, E. ; Vassiliev, A. ; Weidemann, C.FZJ* ; Wrońska, A. ; Wüstner, P.FZJ* ; Zuprański, P. ; Żurek, M.FZJ*

2017
APS College Park, Md.

Physical review letters 119(1), 014801 (2017) [10.1103/PhysRevLett.119.014801]

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Please use a persistent id in citations: http://hdl.handle.net/2128/14877 doi:10.1103/PhysRevLett.119.014801

Abstract: 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.

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