A5037052886- Atomic and Subatomic Physics Research
- Particle Accelerators and Free-Electron Lasers
- Particle physics theoretical and experimental studies
- Dark Matter and Cosmic Phenomena
- Particle accelerators and beam dynamics
- Advanced NMR Techniques and Applications
- Magnetic confinement fusion research
- Computational Physics and Python Applications
- Neutrino Physics Research
- Nuclear physics research studies
- Advanced MRI Techniques and Applications
- Advanced Machining and Optimization Techniques
- Geophysical and Geoelectrical Methods
- Mechanical and Optical Resonators
- Quantum Chromodynamics and Particle Interactions
- Quantum, superfluid, helium dynamics
- Advanced Data Storage Technologies
- Magnetic properties of thin films
- NMR spectroscopy and applications
- Particle Detector Development and Performance
- X-ray Spectroscopy and Fluorescence Analysis
- Experimental and Theoretical Physics Studies
- Atomic and Molecular Physics
- Welding Techniques and Residual Stresses
- Scientific Research and Discoveries
University of Ferrara
2021-2024
Istituto Nazionale di Fisica Nucleare
2021-2024
Forschungszentrum Jülich
2015-2021
Samara National Research University
2016-2020
Belarusian State University
2019
Landau Institute for Theoretical Physics
2013-2019
Moscow Institute of Physics and Technology
2019
Max Planck Institute for Nuclear Physics
2019
Joint Institute for Nuclear Research
2019
A new method to determine the spin tune is described and tested. In an ideal planar magnetic ring, tune-defined as number of precessions per turn-is given by ν(s)=γG (γ Lorentz factor, G gyromagnetic anomaly). At 970 MeV/c, deuteron spins coherently precess at a frequency ≈120 kHz in Cooler Synchrotron COSY. The deduced from up-down asymmetry deuteron-carbon scattering. time interval 2.6 s, was determined with precision order 10^{-8}, 1×10^{-10} for continuous 100 s accelerator cycle. This...
We observe a deuteron beam polarization lifetime near 1000 s in the horizontal plane of magnetic storage ring (COSY). This long spin coherence time is maintained through combination bunching, electron cooling, sextupole field corrections, and suppression collective effects current limits. record required for search an intrinsic electric dipole moment on at statistical sensitivity level approaching 10^{-29} e cm.
Based on the notion that local dark-matter field of axions or axionlike particles (ALPs) in our Galaxy induces oscillating couplings to spins nucleons and nuclei (via electric dipole moment latter and/or paramagnetic axion-wind effect), we establish feasibility a new method search for ALPs storage rings. previous work allows us maintain in-plane polarization stored deuteron beam few hundred seconds, perform first proof-of-principle experiment at Cooler Synchrotron (COSY) scan momenta near...
This paper presents the successful application of a phase-lock feedback system to maintain resonance condition radio frequency (rf) spin rotator (specifically, an rf Wien filter) with respect 120 kHz precession in Cooler Synchrotron (COSY) storage ring. Real-time monitoring and filter signal allows relative phase between two be stabilized at arbitrary setpoint. The compensates for deviations by adjusting and/or as needed. With this method, variation demand standard deviation...
This Letter reports the successful use of feedback from a spin polarization measurement to revolution frequency $0.97\text{ }\text{ }\mathrm{GeV}/c$ bunched and polarized deuteron beam in Cooler Synchrotron (COSY) storage ring order control both precession rate ($\ensuremath{\approx}121\text{ }\mathrm{kHz}$) phase horizontal component. Real time synchronization with radio (rf) solenoid made possible rotation out plane, yielding demonstration method manipulate polarization. In particular,...
The stable spin direction of polarized particles in a storage ring was determined first experimentally, through an accurate measurement the tune and its response to longitudinal magnetic fields.
The Standard Model (SM) of Particle Physics is not capable accounting for the apparent matter-antimatter asymmetry our universe. beyond SM required and searched by (i) employing highest energies (e.g., at LHC), (ii) striving ultimate precision sensitivity in search electric dipole moments (EDMs)). Permanent EDMs particles violate both time reversal (T) parity (P) invariance, are via CPT-theorem also CP-violating. Finding an EDM would be a strong indication physics SM, reducing upper limits...
The proposed method exploits charged particles confined as a storage ring beam (proton, deuteron, possibly $^3$He) to search for an intrinsic electric dipole moment (EDM) aligned along the particle spin axis. Statistical sensitivities could approach 10$^{-29}$ e$\cdot$cm. challenge will be reduce systematic errors similar levels. adjusted preserve polarisation, initially parallel velocity, times in excess of 15 minutes. Large radial fields, acting through EDM, rotate polarisation from...
In this paper, we demonstrate the connection between a magnetic storage ring with additional sextupole fields set so that x and y chromaticities vanish maximizing of lifetime in-plane polarization (IPP) for 0.97-GeV/c deuteron beam. The IPP magnitude was measured by continuously monitoring down-up scattering asymmetry (sensitive to sideways polarization) in an in-beam, carbon-target polarimeter unfolding precession due anomaly deuteron. optimum operating conditions long were made scanning...
This paper reports the first simultaneous measurement of horizontal and vertical components polarization vector in a storage ring under influence radio frequency (rf) solenoid. The experiments were performed at Cooler Synchrotron COSY J\"ulich using polarized, bunched $0.97\,\textrm{GeV/c}$ deuteron beam. Using new spin feedback system, we set initial phase difference between solenoid field precession to predefined value. system was then switched off, allowing change over time, on rotate...
The Jülich Electric Dipole moment Investigation (JEDI) collaboration aims at a direct measurement of the Moment (EDM) protons and deuterons using storage ring. is based on polarization measurement. In order to reach highest accuracy, one has know exact trajectory through magnets, especially quadrupoles, avoid influence magnetic fields vector. this paper, development beam-based alignment technique described that was developed implemented COoler SYnchrotron (COSY) Forschungszentrum Jülich....
We investigated coherent betatron oscillations of a deuteron beam in the storage ring cooler synchrotron and ring, excited by detuned rf Wien filter (WF). The were detected conventional position monitors. With currently available apparatus, we show that oscillation amplitudes down to $1\text{ }\text{ }\ensuremath{\mu}\mathrm{m}$ can be detected. interpretation response stored WF is based on simulations evolution lattice realistic time-dependent 3D field maps WF. Future measurements electric...
We review the General Relativity induced precession of a spin relativistic particles in storage rings terrestrial environment. Besides clasical geodetic effect there emerges rotation focusing fields needed to compensate for Earth gravity force acting on stored particles. The both effects have structure spin-orbit interaction gravitational field. Our major point is vindication 2012 Orlov-Flanagan-Semertzidis derivation GR false EDM signal all-electric frozen-spin rings. experimental...
Abstract A measurement of vector analyzing powers in elastic deuteron-carbon scattering has been performed at the Cooler Synchrotron COSY Forschungszentrum Jülich, Germany. Seven kinetic beam energies between 170 and 380 MeV have used. vector-polarized from a polarized deuteron source was injected, accelerated to final desired energy stored COSY. thin needle-shaped diamond strip used as carbon target, onto which slowly steered. Elastically scattered deuterons were identified forward...
A calorimetric polarimeter based on inorganic LYSO scintillators is described. It has been designed for use in a storage ring to search electric dipole moments (EDM) of charged particles such as the proton and deuteron. Its development first was Cooler Synchrotron (COSY) at Forschungszentrum Jülich with 0.97 GeV/c polarized deuterons, particle energy suitable an EDM search. The requires high efficiency, large analyzing power, stable operating characteristics. With typical beam momenta about...
This project exploits charged particles confined as a storage ring beam (proton, deuteron, possibly $^3$He) to search for an intrinsic electric dipole moment (EDM, $\vec d$) aligned along the particle spin axis. Statistical sensitivities can approach $10^{-29}$~e$\cdot$cm. The challenge will be reduce systematic errors similar levels. adjusted preserve polarization, initially parallel velocity, times in excess of 15 minutes. Large radial fields, acting through EDM, rotate polarization ($\vec...
High-frequency driven resonant spin rotators are routinely used as standard instruments in polarization experiments particle and nuclear physics. Maintaining the continuous exact parametric resonance condition of equality rotator precession frequency during operation is one challenges. We present a detailed analytical description effects detuning on precessing vertical in-plane components polarization. An important part formalism presented here consideration experimentally relevant...
Based on the notion that local dark-matter field of axions or axion-like particles (ALPs) in our Galaxy induces oscillating couplings to spins nucleons and nuclei (via electric dipole moment latter and/or paramagnetic axion-wind effect), we establish feasibility a new method search for ALPs storage rings. previous work allows us maintain in-plane polarization stored deuteron beam few hundred seconds, performed first proof-of-principle experiment at Cooler Synchrotron COSY scan momenta near...
Searches of the electric dipole moment (EDM) at a pure magnetic ring, like COSY, encounter strong background coming from (MDM). The most troubling issue is MDM spin rotation in so-called imperfection, radial and longitudinal, B-fields. To study systematic effects imperfection fields COSY we proposed original method which makes use two static solenoids acting as artificial imperfections. Perturbation tune caused by kicks probes effect cumulative all over ring. one precise quantities measured...
A measurement of vector analyzing powers in elastic deuteron-carbon scattering has been performed at the Cooler Synchrotron COSY Forschungszentrum J\"ulich, Germany. Seven kinetic beam energies between 170 and 380 MeV have used. vector-polarized from a polarized deuteron source was injected, accelerated to final desired energy stored COSY. thin needle-shaped diamond strip used as carbon target, onto which slowly steered. Elastically scattered deuterons were identified forward direction using...