Details

Autor(en) / Beteiligte

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

Titel

Phase Locking the Spin Precession in a Storage Ring

Ist Teil von

• Physical review letters, 2017-07, Vol.119 (1), p.014801-014801, Article 014801

Ort / Verlag

United States

Erscheinungsjahr

2017

Quelle

American Physical Society Journals

Beschreibungen/Notizen

• 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.