Electromagnetic Simulation and Design of a Novel Waveguide RF Wien Filter for Electric Dipole Moment Measurements of Protons and Deuterons

Slim, J.; Gebel, R.; Heberling, Dirk; Hinder, Fabian; Hölscher, Dirk; Lehrach, A.; Lorentz, B.; Mey, S.; Nass, A.; Rathmann, F.; Reifferscheidt, Lars; Soltner, H.; Straatmann, H.; Trinkel, F.; Wolters, J.

doi:10.1016/j.nima.2016.05.012

Cited by 44 publications

(66 citation statements)

References 20 publications

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“…JEDI collaboration plans to perform main experiments with the rf Wien filter [11,12,17]. The static version of this filter is frequently used to turn the spin without an effect on beam dynamics.…”

Section: Quasimagnetic Resonance In a Noncontinuous Perturbing Fieldmentioning

confidence: 99%

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

Silenko

2017

Eur. Phys. J. C

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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.

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Section: Quasimagnetic Resonance In a Noncontinuous Perturbing Fieldmentioning

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%

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

Silenko

2017

Eur. Phys. J. C

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“…The assumed electric and magnetic fields are by a factor 1000 larger than the fields of the real WF operated (without ferrites) at an input power of 1 kW [43].…”

Section: Model Calculation Of Polarization Evolutionmentioning

confidence: 99%

Electric dipole moment searches using storage rings

Rathmann¹,

Николаев²

2019

Proceedings of 23rd International Spin Physics Symposium — PoS(SPIN2018)

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The Standard Model (SM) of Particle Physics is not capable to account for the apparent matterantimatter asymmetry of our Universe. Physics beyond the SM is required and is either probed by employing highest energies (e.g., at LHC), or by striving for ultimate precision and sensitivity (e.g., in the search for electric dipole moments). Permanent electric dipole moments (EDMs) of particles violate both time reversal (T ) and parity (P) invariance, and are via the CPT -theorem also CP-violating. Finding an EDM would be a strong indication for physics beyond the SM, and pushing upper limits further provides crucial tests for any corresponding theoretical model, e.g., SUSY. Up to now, EDM searches focused on neutral systems (neutrons, atoms, and molecules). Storage rings, however, offer the possibility to measure EDMs of charged particles by observing the influence of the EDM on the spin motion in the ring. Direct searches of proton and deuteron EDMs, however, bear the potential to reach sensitivities beyond 10 −29 e cm. Since the Cooler Synchrotron COSY at the Forschungszentrum Jülich provides polarized protons and deuterons up to momenta of 3.7 GeV/c, it constitutes an ideal testing ground and starting point for such an experimental program. Besides the discussion of the achievements of the JEDI collaboration, and the description of an effort to perform a first direct deuteron EDM measurement at COSY, the report highlights in addition future technical developments that will pave the way toward EDM searches in dedicated rings. A recent advancement that grew out of the successful work performed by JEDI is the formation of the CPEDM Collaboration ‡ , which aims at the design of an EDM prototype ring that could be hosted either at CERN or at COSY, will be discussed as well.

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“…9 of [1], and such populations might violate the independence requirement of the random parameters. In this case, the Nataf transformation [18][19][20] 4 can be used to solve this problem.…”

Section: Simulation Walkthroughmentioning

confidence: 99%

Computational framework for particle and spin simulations based on the stochastic Galerkin method

Slim¹,

Rathmann²,

Heberling³

2017

Phys. Rev. E

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Electromagnetic Simulation and Design of a Novel Waveguide RF Wien Filter for Electric Dipole Moment Measurements of Protons and Deuterons

Cited by 44 publications

References 20 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

Electric dipole moment searches using storage rings

Computational framework for particle and spin simulations based on the stochastic Galerkin method

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