%0 Journal Article
%A Slim, J.
%A Rathmann, F.
%A Andres, A.
%A Hejny, V.
%A Nass, A.
%A Kacharava, A.
%A Lenisa, P.
%A Nikolaev, N. N.
%A Pretz, J.
%A Saleev, A.
%A Shmakova, V.
%A Soltner, H.
%A Abusaif, F.
%A Aggarwal, A.
%A Aksentev, A.
%A Alberdi, B.
%A Barion, L.
%A Bekman, I.
%A Beyß, M.
%A Böhme, C.
%A Breitkreutz, B.
%A Canale, N.
%A Ciullo, G.
%A Dymov, S.
%A Fröhlich, N.-O.
%A Gebel, R.
%A Gaisser, M.
%A Grigoryev, K.
%A Grzonka, D.
%A Hetzel, J.
%A Javakhishvili, O.
%A Kamerdzhiev, V.
%A Karanth, S.
%A Keshelashvili, I.
%A Kononov, A.
%A Laihem, K.
%A Lehrach, A.
%A Lomidze, N.
%A Lorentz, B.
%A Macharashvili, G.
%A Magiera, A.
%A Mchedlishvili, D.
%A Melnikov, A.
%A Müller, F.
%A Pesce, A.
%A Poncza, V.
%A Prasuhn, D.
%A Shergelashvili, D.
%A Shurkhno, N.
%A Siddique, S.
%A Silenko, A.
%A Stassen, R.
%A Stephenson, E. J.
%A Stroeher, Hans
%A Tabidze, M.
%A Tagliente, G.
%A Valdau, Y.
%A Vitz, M.
%A Wagner, T.
%A Wirzba, A.
%A Wrońska, A.
%A Wüstner, P.
%A Żurek, M.
%T Proof-of-principle demonstration of a pilot bunch comagnetometer in a stored beam
%J Physical review research
%V 7
%N 2
%@ 2643-1564
%C College Park, MD
%I APS
%M FZJ-2025-02879
%P 023257
%D 2025
%X 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.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:001513060300001
%R 10.1103/PhysRevResearch.7.023257
%U https://juser.fz-juelich.de/record/1043476