Pilot bunch and co-magnetometry of polarized particles stored in a ring
In polarization experiments at storage rings, one of the challenges is to maintain the spin-resonance condition of a radio-frequency spin rotator with the spin-precessions of the orbiting particles. Time-dependent variations of the magnetic fields of ring elements lead to unwanted variations of the...
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| creator | Slim, J Rathmann, F Andres, A Hejny, V Nass, A Kacharava, A Lenisa, P Nikolaev, N N Pretz, J Saleev, A Shmakova, V Soltner, H Abusaif, F Aggarwal, A Aksentev, A Alberdi, B Barion, L Bekman, I M Bey\ss Böhme, C Breitkreutz, B Canale, N Ciullo, G Dymov, S N -O Fröhlich Gebel, R Gaisser, M Grigoryev, K Grzonka, D Hetzel, J Javakhishvili, O Kamerdzhiev, V Karanth, S Keshelashvili, I Kononov, A Laihem, K Lehrach, A Lomidze, N Lorentz, B Macharashvili, G Magiera, A Mchedlishvili, D Melnikov, A Müller, F Pesce, A Poncza, V Prasuhn, D Shergelashvili, D Shurkhno, N Siddique, S Silenko, A Stassen, S Stephenson, E J Ströher, H Tabidze, M Tagliente, G Valdau, Y Vitz, M Wagner, T Wirzba, A Wrońska, A Wüstner, P Żurek, M |
| description | In polarization experiments at storage rings, one of the challenges is to maintain the spin-resonance condition of a radio-frequency spin rotator with the spin-precessions of the orbiting particles. Time-dependent variations of the magnetic fields of ring elements lead to unwanted variations of the spin precession frequency. We report here on a solution to this problem by shielding (or masking) one of the bunches stored in the ring from the high-frequency fields of the spin rotator, so that the masked pilot bunch acts as a co-magnetometer for the other signal bunch, tracking fluctuations in the ring on a time scale of about one second. While the new method was developed primarily for searches of electric dipole moments of charged particles, it may have far-reaching implications for future spin physics facilities, such as the EIC and NICA. |
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| subjects | Charged particles Dipole moments Electric dipoles Magnetic measurement Time dependence |
| title | Pilot bunch and co-magnetometry of polarized particles stored in a ring |
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