131 citations · 486 across the 19 of their papers we have counts for
19 papers
First Experimental Limit on the Permanent Electric Dipole Moment of the Deuteron
A. Andres, V. Hejny, A. Nass +68
Permanent electric dipole moments (EDMs) provide a sensitive probe of physics beyond the Standard Model and are directly linked to additional sources of CP violation that could exp…
Maintaining a Resonance Condition of an RF Spin Rotator Through a Feedback Loop in a Storage Ring
V. Hejny, A. Andres, J. Pretz +63
This paper presents the successful application of a phase-lock feedback system to maintain the resonance condition of a radio frequency (rf) spin rotator (specifically, an rf Wien…
Pilot bunch and co-magnetometry of polarized particles stored in a ring
J. Slim, F. Rathmann, A. Andres +60
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 o…
Spin decoherence and off-resonance behavior of radiofrequency-driven spin rotations in storage rings
N. N. Nikolaev, F. Rathmann, J. Slim +60
Radiofrequency-driven resonant spin rotators are routinely used as standard instruments in polarization experiments in particle and nuclear physics. Maintaining the continuous exac…
First detection of collective oscillations of a stored deuteron beam with an amplitude close to the quantum limit
J. Slim, N. N. Nikolaev, F. Rathmann +41
We investigated coherent betatron oscillations of a deuteron beam in the storage ring COSY, excited by a detuned radio-frequency Wien filter. The beam oscillations were detected by…
Measurement of deuteron carbon vector analyzing powers in the kinetic energy range 170-380 MeV
JEDI Collaboration, F. Müller, M. Zurek +58
A measurement of vector analyzing powers in elastic deuteron-carbon scattering has been performed at the Cooler Synchrotron COSY of Forschungszentrum Jülich, Germany. Seven kinetic…
Storage Ring to Search for Electric Dipole Moments of Charged Particles -- Feasibility Study
F. Abusaif, A. Aggarwal, A. Aksentev +98
The proposed method exploits charged particles confined as a storage ring beam (proton, deuteron, possibly He) to search for an intrinsic electric dipole moment (EDM) aligned a…
Feasibility Study for an EDM Storage Ring
F. Abusaif, A. Aggarwal, A. Aksentev +92
This project exploits charged particles confined as a storage ring beam (proton, deuteron, possibly He) to search for an intrinsic electric dipole moment (EDM, ) aligne…
Phase Measurement for Driven Spin Oscillations in a Storage Ring
N. Hempelmann, V. Hejny, J. Pretz +65
This paper reports the first simultaneous measurement of the horizontal and vertical components of the polarization vector in a storage ring under the influence of a radio frequenc…
The connection between zero chromaticity and long in-plane polarization lifetime in a magnetic storage ring
G. Guidoboni, E. J. Stephenson, A Wrońska +40
In this paper, we demonstrate the connection between a magnetic storage ring with additional sextupole fields set so that the x and y chromaticities vanish and the maximizing of th…
Spin tune mapping as a novel tool to probe the spin dynamics in storage rings
A. Saleev, N. N. Nikolaev, F. Rathmann +61
Precision experiments, such as the search for electric dipole moments of charged particles using storage rings, demand for an understanding of the spin dynamics with unprecedented…
Phase locking the spin precession in a storage ring
N. Hempelmann, V. Hejny, J. Pretz +66
This letter reports the successful use of feedback from a spin polarization measurement to the revolution frequency of a 0.97 GeV/ bunched and polarized deuteron beam in the Coo…
New method for a continuous determination of the spin tune in storage rings and implications for precision experiments
D. Eversmann, V. Hejny, F. Hinder +98
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…
Analytical Benchmarks for Precision Particle Tracking in Electric and Magnetic Rings
E. M. Metodiev, I. M. D'Silva, M. Fandaros +11
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 ma…
A Storage Ring Experiment to Detect a Proton Electric Dipole Moment
V. Anastassopoulos, S. Andrianov, R. Baartman +88
A new experiment is described to detect a permanent electric dipole moment of the proton with a sensitivity of cm by using polarized "magic" momentum ~GeV/c pr…
Study of the charge-exchange reaction using a polarised deuterium target
B. Gou, D. Mchedlishvili, Z. Bagdasarian +38
The vector and tensor analysing powers, and , of the charge-exchange reaction have been measured at a beam energy of 600 MeV at the COSY-AN…
Toward polarized antiprotons: Machine development for spin-filtering experiments
C. Weidemann, F. Rathmann, H. J. Stein +54
The paper describes the commissioning of the experimental equipment and the machine studies required for the first spin-filtering experiment with protons at a beam kinetic energy o…
Measuring the Polarization of a Rapidly Precessing Deuteron Beam
Z. Bagdasarian, S. Bertelli, D. Chiladze +35
This paper describes a time-marking system that enables a measurement of the in-plane (horizontal) polarization of a 0.97-GeV/c deuteron beam circulating in the Cooler Synchrotron…
Measurement of spin observables in the quasi-free np-> {pp}_s pi- reaction at 353 MeV
S. Dymov, V. Shmakova, T. Azaryan +54
The transverse spin correlations A_{x,x} and A_{y,y} have been measured in the pol{d} pol{p} -> p_spec {pp}_s pi- reaction at COSY-ANKE at 353 MeV per nucleon. Here {pp}_s denotes…