activity
20152025
most citedNew method for a continuous determination of the spin tune in storage rings and implications for precision experiments

78 citations · 279 across the 15 of their papers we have counts for

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10 papers · 1 filter

physics.acc-ph2025

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…

physics.acc-ph2024★ 6 cited

Injection Optimization at Particle Accelerators via Reinforcement Learning: From Simulation to Real-World Application

Awal Awal, Jan Hetzel, Ralf Gebel +1

Optimizing the injection process in particle accelerators is crucial for enhancing beam quality and operational efficiency. This paper presents a framework for utilizing Reinforcem…

physics.acc-ph2023★ 1 cited

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…

physics.acc-ph2023★ 6 cited

Optimization of the injection beam line at the Cooler Synchrotron COSY using Bayesian Optimization

A. Awal, J. Hetzel, R. Gebel +2

The complex non-linear processes in multi-dimensional parameter spaces, that are typical for an accelerator, are a natural application for machine learning algorithms. This paper r…

physics.acc-ph2020★ 9 cited

Beam-based alignment at the Cooler Synchrotron COSY as a prerequisite for an electric dipole moment measurement

T. Wagner, A. Nass, J. Pretz +47

The Jülich Electric Dipole moment Investigation (JEDI) collaboration aims at a direct measurement of the Electric Dipole Moment (EDM) of protons and deuterons using a storage ring.…

physics.acc-ph2019★ 6 cited

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…

physics.acc-ph2018★ 8 cited

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…

physics.acc-ph2017★ 43 cited

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…

physics.acc-ph2017★ 48 cited

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…

physics.acc-ph2015★ 78 cited

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…