학술논문
Pilot bunch and co-magnetometry of polarized particles stored in a ring
Document Type
Working Paper
Author
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.; Beyß, M.; Böhme, C.; Breitkreutz, B.; Canale, N.; Ciullo, G.; Dymov, S.; Fröhlich, N. -O.; 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.
Source
Subject
Language
Abstract
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.
Comment: 5 pages, 3 figures + references + supplemental material (6 pages, 2 figures, 6 tables + references)
Comment: 5 pages, 3 figures + references + supplemental material (6 pages, 2 figures, 6 tables + references)