Spin tune mapping as a novel tool to probe the spin dynamics in storage rings

Saleev, A.; Николаев, Н. Н.; Rathmann, F.; Augustyniak, W.; Bagdasarian, Z.; Bai, Mei; Barion, L.; Berz, Martin; Chekmenev, S.; Ciullo, G.; Dymov, S.; Eversmann, D.; Gaisser, M.; Gebel, R.; Grigoryev, K.; Grzonka, D.; Guidoboni, Greta; Heberling, Dirk; Hejny, V.; Hempelmann, N.; Hetzel, J.; Hinder, Fabian; Kacharava, A.; Kamerdzhiev, V.; Keshelashvili, I.; Koop, I. A.; Куликов, А. И.; Lehrach, A.; Lenisa, P.; Lomidze, N.; Lorentz, B.; Maanen, P.; Macharashvili, G.; Magiera, A.; Mchedlishvili, D.; Mey, S.; Müller, Fabian; Nass, A.; Pesce, A.; Prasuhn, D.; Pretz, J.; Rosenthal, M.; Schmidt, V.; Semertzidis, Y. K.; Senichev, Y.; Shmakova, V.; Silenko, Alexander J.; Slim, J.; Soltner, H.; Stahl, A.; Stassen, R.; Stephenson, E. J.; Stockhorst, H.; Ströher, H.; Tabidze, M.; Tagliente, G.; Talman, R.; Engblom, P. Thörngren; Trinkel, F.; Uzikov, Yu. N.; Valdau, Yu.; Valetov, Eremey; Vassiliev, A.; Weidemann, Christian; Wrońska, A.; Wüstner, P.; Żuprański, P.; Żurek, M.

doi:10.1103/physrevaccelbeams.20.072801

Cited by 41 publications

(45 citation statements)

References 42 publications

(87 reference statements)

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“…If the magnetic field is in the ring plane, a Wien filter can cause an oscillation in the vertical polarization, which is similar to the one observed here, and which follows the same basic equations [12]. A related model for an rf Wien filter is presented in [8].…”

supporting

confidence: 68%

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Phase measurement for driven spin oscillations in a storage ring

Hempelmann¹,

Hejny²,

Pretz³

et al. 2018

Phys. Rev. Accel. Beams

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supporting

confidence: 68%

“…Another interesting property of the equations of motion is that they simplify to a circular motion at a constant speed if α and Δϕ are interpreted as the elevation and azimuth angles of a spherical coordinate system (see also [8])…”

mentioning

confidence: 99%

Phase measurement for driven spin oscillations in a storage ring

Hempelmann¹,

Hejny²,

Pretz³

et al. 2018

Phys. Rev. Accel. Beams

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“…Following the technique exposed in Appendix A of Ref. [11], one can redaily extend the above considerations to the offresonance case. Of particular interest will be a decoherence of polarization in the ring plane.…”

Section: Introductionmentioning

confidence: 99%

“…In further derivation of the impact of SO on the RF driven rotation of spin of stored particles, we follow closely the formalism of Appendix A in Ref. [11]. RF spin rotator is described by the spin transfer matrix…”

Section: Introductionmentioning

confidence: 99%

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Non-exponential decoherence of radio-frequency resonance rotation of spin in storage rings

et al. 2017

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Precision experiments, such as the search for electric dipole moments of charged particles using radiofrequency 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 radiofrequency 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 radiofreqency spin rotator and a possibility to check predictions of decoherence-free magic energies.

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Spin tune mapping at COSY

Saleev

2019

Hyperfine Interact

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Spin tune mapping as a novel tool to probe the spin dynamics in storage rings

Abstract: The synchrotron and storage ring COSY accelerates and stores unpolarized and polarized proton or deuteron beams in the momentum range of 0.3 to 3.65 GeV=c [14,15].

Cited by 41 publications

References 42 publications

Phase measurement for driven spin oscillations in a storage ring

Phase measurement for driven spin oscillations in a storage ring

Non-exponential decoherence of radio-frequency resonance rotation of spin in storage rings

Spin tune mapping at COSY

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