rf Wien filter in an electric dipole moment storage ring: The “partially frozen spin” effect

Morse, W. M.; Orlov, Yuri F.; Semertzidis, Yannis K.

doi:10.1103/physrevstab.16.114001

Cited by 42 publications

(78 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[10]. The theoretical calculations agree with spin tracking [10,40]. The rf Wien filter unlike the rf electric-field flipper does not affect the motion of particles and nuclei.…”

Section: Quasimagnetic Resonance In a Noncontinuous Perturbing Fieldsupporting

confidence: 75%

“…One can also add a vertical magnetic field oscillating with the same resonance frequency. When the Lorentz force created by this device is equal to zero, one obtains a rf Wien filter [10]. The very weak perturbing field is caused by the interaction of the EDM with the main magnetic or electric field.…”

Section: Magnetic and Quasimagnetic Resonances For Moving Particles Amentioning

confidence: 99%

“…The existence of this effect has been confirmed and has been rigorously proven by the subsequent theoretical analysis fulfilled in Refs. [10,41,42].…”

Section: Distinguishing Features Of a Quasimagnetic Resonance In Stormentioning

confidence: 99%

“…An investigation of quasimagnetic resonances caused by the EDM is important for planned experiments with a rf electric-field flipper and a rf Wien filter (see Refs. [10][11][12]). A change of the spin (pseudo-)vector is orthogonal to the spin direction.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

General classical and quantum-mechanical description of magnetic resonance: an application to electric-dipole-moment experiments

Silenko

2017

Eur. Phys. J. C

View full text Add to dashboard Cite

A general theoretical description of a magnetic resonance is presented. This description is necessary for a detailed analysis of spin dynamics in electric-dipole-moment experiments in storage rings. General formulas describing a behavior of all components of the polarization vector at the magnetic resonance are obtained for an arbitrary initial polarization. These formulas are exact on condition that the nonresonance rotating field is neglected. The spin dynamics is also calculated at frequencies far from resonance with allowance for both rotating fields. A general quantummechanical analysis of the spin evolution at the magnetic resonance is fulfilled and the full agreement between the classical and quantum-mechanical approaches is shown. Quasimagnetic resonances for particles and nuclei moving in noncontinuous perturbing fields of accelerators and storage rings are considered. Distinguishing features of quasimagnetic resonances in storage ring electric-dipole-moment experiments are investigated in detail. The exact formulas for the effect caused by the electric dipole moment are derived. The difference between the resonance effects conditioned by the rf electric-field flipper and the rf Wien filter is found and is calculated for the first time. The existence of this difference is crucial for the establishment of a consent between analytical derivations and computer simulations and for checking spin tracking programs. The main systematical errors are considered.

show abstract

“…[10]. The theoretical calculations agree with spin tracking [10,40]. The rf Wien filter unlike the rf electric-field flipper does not affect the motion of particles and nuclei.…”

Section: Quasimagnetic Resonance In a Noncontinuous Perturbing Fieldsupporting

confidence: 75%

Section: Magnetic and Quasimagnetic Resonances For Moving Particles Amentioning

confidence: 99%

“…The existence of this effect has been confirmed and has been rigorously proven by the subsequent theoretical analysis fulfilled in Refs. [10,41,42].…”

Section: Distinguishing Features Of a Quasimagnetic Resonance In Stormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

General classical and quantum-mechanical description of magnetic resonance: an application to electric-dipole-moment experiments

Silenko

2017

Eur. Phys. J. C

View full text Add to dashboard Cite

show abstract

“…These investigations, however, demand a new class of storage rings. Using an existing machine, one could perform a first direct measurement of the proton or deuteron EDM using an rf Wien filter [31][32][33]. In this case, one has to cope with the fast spin precession due to the deflection and focusing in the magnetic elements.…”

Section: Prl 115 094801 (2015) P H Y S I C a L R E V I E W L E T T Ementioning

confidence: 99%

New Method for a Continuous Determination of the Spin Tune in Storage Rings and Implications for Precision Experiments

Eversmann¹,

Hejny²,

Hinder³

et al. 2015

Phys. Rev. Lett.

View full text Add to dashboard Cite

A new method to determine the spin tune is described and tested. In an ideal planar magnetic ring, the spin tune-defined as the number of spin precessions per turn-is given by ν s ¼ γG (γ is the Lorentz factor, G the gyromagnetic anomaly). At 970 MeV=c, the deuteron spins coherently precess at a frequency of ≈120 kHz in the Cooler Synchrotron COSY. The spin tune is deduced from the up-down asymmetry of deuteron-carbon scattering. In a time interval of 2.6 s, the spin tune was determined with a precision of the PRL 115, 094801 (2015) P H Y S I C A L

show abstract

Analytical benchmarks for precision particle tracking in electric and magnetic rings

Metodiev

D׳Silva

Fandaros

et al. 2015

Nuclear Instruments and Methods in Physics Research Section A:

View full text Add to dashboard Cite

A set of analytical benchmarks for tracking programs is required for precision storage ring experiments. To determine the accuracy of precision tracking programs in electric and magnetic rings, a variety of analytical estimates of particle and spin dynamics in the rings were developed and compared to the numerical results of tracking simulations. Initial discrepancies in the comparisons indicated the need for improvement of several of the analytical estimates. As an example, we found that the fourth-order Runge-Kutta/Predictor-Corrector method was slow but accurate, and that it passed all the benchmarks it was tested against, often to the sub-part per billion level. Thus, high precision analytical estimates and tracking programs based on fourth-order Runge-Kutta/Predictor-Corrector integration can be used to benchmark faster tracking programs for accuracy.

show abstract

rf Wien filter in an electric dipole moment storage ring: The “partially frozen spin” effect

Cited by 42 publications

References 4 publications

General classical and quantum-mechanical description of magnetic resonance: an application to electric-dipole-moment experiments

General classical and quantum-mechanical description of magnetic resonance: an application to electric-dipole-moment experiments

New Method for a Continuous Determination of the Spin Tune in Storage Rings and Implications for Precision Experiments

Analytical benchmarks for precision particle tracking in electric and magnetic rings

Contact Info

Product

Resources

About