Proof-of-principle demonstration of a pilot bunch comagnetometer in a stored beam
Year: 2025
Type: article
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 comagnetometer 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.
Source: Physical Review Research
Authors: J. Slim, F. Rathmann, A. Andres, V. Hejny, A. Nass, A. Kacharava, P. Lenisa, N. N. Nikolaev, J. Pretz, A. Saleev, V. Shmakova, H. Soltner, F. Abusaif, A. Aggarwal, A. Aksentev, B. Alberdi, L. Barion, I. Bekman, M. Beyß, C. Böhme, B. Breitkreutz, N. Canale, G. Ciullo, S. Dymov, N.-O. Fröhlich, R. Gebel, M. Gaisser, K. Grigoryev, D. Grzonka, J. Hetzel, O. Javakhishvili, V. Kamerdzhiev, S. Karanth, I. Keshelashvili, A. Kononov, K. Laihem, A. Lehrach, N. Lomidze, B. Lorentz, G. Macharashvili, A. Magiera, D. Mchedlishvili, A. Melnikov, F. Müller, A. Pesce, V. Poncza, D. Prasuhn, D. Shergelashvili, N. Shurkhno, S. Siddique, A. Silenko, R. Stassen, E. J. Stephenson, H. Ströher, M. Tabidze, G. Tagliente, Y. Valdau, M. Vitz, T. Wagner, A. Wirzba, A. Wrońska, P. Wüstner, M. Żurek
Institutions: RWTH Aachen University, Forschungszentrum Jülich, Istituto Nazionale di Fisica Nucleare, University of Ferrara, Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara, Landau Institute for Theoretical Physics, Jagiellonian University, Russian Academy of Sciences, Institute for Nuclear Research, Institute for Nuclear Research, Agricultural University of Georgia, Tbilisi State University, GSI Helmholtz Centre for Heavy Ion Research, Joint Institute for Nuclear Research, Indiana University Bloomington, Indiana University, Istituto Nazionale di Fisica Nucleare, Sezione di Bari
Language: English
Subfield: Aerospace Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,625
OpenAlex ID: W4411278503