TY  - JOUR
AU  - Saleev, A.
AU  - Nikolaev, N. N.
AU  - Rathmann, F.
AU  - Hinder, F.
AU  - Pretz, J.
AU  - Rosenthal, M.
TI  - Non-exponential decoherence of radio-frequency resonance rotation of spin in storage rings
JO  - JETP letters
VL  - 106
IS  - 4
SN  - 1090-6487
CY  - Heidelberg [u.a.]
PB  - Springer
M1  - FZJ-2017-07903
SP  - 213 - 216
PY  - 2017
AB  - Precision experiments, such as the search for electric dipole moments of charged particles using radio-frequency spin rotators in storage rings, demand for maintaining the exact spin resonance condition for several thousand seconds. Synchrotron oscillations in the stored beam modulate the spin tune of off-central particles, moving it off the perfect resonance condition set for central particles on the reference orbit. Here, we report an analytic description of how synchrotron oscillations lead to non-exponential decoherence of the radio-frequency resonance driven up–down spin rotations. This non-exponential decoherence is shown to be accompanied by a nontrivial walk of the spin phase. We also comment on sensitivity of the decoherence rate to the harmonics of the radio-frequency spin rotator and a possibility to check predictions of decoherence-free magic energies.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000413418400002
DO  - DOI:10.1134/S0021364017160044
UR  - https://juser.fz-juelich.de/record/840366
ER  -