Eremey Valetov
A5000107725- Particle physics theoretical and experimental studies
- Particle accelerators and beam dynamics
- Muon and positron interactions and applications
- Particle Accelerators and Free-Electron Lasers
- Superconducting Materials and Applications
- Particle Detector Development and Performance
- Atomic and Subatomic Physics Research
- Neutrino Physics Research
- Computational Physics and Python Applications
- Quantum Chromodynamics and Particle Interactions
- Advancements in Photolithography Techniques
- Geophysical and Geoelectrical Methods
- Nuclear physics research studies
- High-Energy Particle Collisions Research
- Numerical methods for differential equations
- Electron and X-Ray Spectroscopy Techniques
- Atomic and Molecular Physics
- Magnetic confinement fusion research
- Advanced NMR Techniques and Applications
- Dark Matter and Cosmic Phenomena
- Fusion materials and technologies
- Electron Spin Resonance Studies
- Scientific Research and Discoveries
- Algebraic structures and combinatorial models
- Advanced Measurement and Metrology Techniques
Michigan State University
2015-2024
Paul Scherrer Institute
2022-2024
Shanghai Jiao Tong University
2021
Lancaster University
2021
Sorbonne Université
2020
Max Planck Institute for Nuclear Physics
2020
Lancaster City Council
2020
Cockcroft Institute
2018-2019
Daresbury Laboratory
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.
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 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...
Currently, PSI delivers the most intense continuous muon beam in world with up to a few 10 8 µ + /s. The High-Intensity Muon Beams (HIMB) project is developing new target station and beamlines able deliver /s, huge impact for low-energy, high-precision experiments. While next generation of proton drivers powers excess currently achieved 1.4 MW still require significant research development, focus HIMB improve surface yield geometry increase capture transmission solenoid-based beamline order...
The Isotope and Muon Production using Advanced-Cyclotron Target Technology Project (IMPACT) foresees the introduction of two new target stations three beamlines: one for radionuclide production surface muon production. latter forms project, High-Intensity Beams (HIMB), which plans to increase rate from current world record 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">8</sup> μ xmlns:xlink="http://www.w3.org/1999/xlink">+</sup> /s up...
An observation of Charged Lepton Flavor Violation (CLFV) would be unambiguous evidence for physics beyond the Standard Model. The Mu2e and COMET experiments, under construction, are designed to push sensitivity CLFV in mu e conversion process unprecedented levels. Whether is observed or not, there a strong case made further improving sensitivity, examining on additional target materials. Mu2e-II proposed upgrade Mu2e, with at least an order magnitude rate over Mu2e. approach challenges this...
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...
To search for proton Electric Dipole Moments (EDM) using storage ring with purely electrostatic elements, the concept of frozen spin method has been proposed [1]. This is based on two facts: in equation precession, magnetic field dependence entirely eliminated, and at “magic” energy, precession frequency coincides particle momentum. In case deuteron we have to use electrical simultaneously as will be explained later, keeping direction along momentum pure ring. this article, suggest...
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...
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...
We present two novel beam monitors designed for use in current PSI muon beams and upgradable the High Intensity Muon Beam (HIMB) project beamlines: scintillating fibre (SciFi) detector, a grid of fibres coupled to SiPMs, MatriX matrix plastic scintillators silicon photomultipliers (SiPMs), both detectors having particle ID capability.The advantage these highly segmented is capability withstand high rate perform total measurements.Furthermore, SiPM as photosensor enables operation magnetic...
Abstract The High Intensity Muon Beams (HIMB) project at the Paul Scherrer Institute (PSI) will provide muon intensities of order 10 muons/s for particle physics and material science experiments, two orders magnitude higher than state art, which is currently available also PSI. In transport simulations HIMB, we use G4beamline with measured + cross-sections variance reduction. We codes COSY INFINITY, TRANSPORT , TURTLE some studies. perform asynchronous Bayesian optimisation beamlines on a...
The method is based on four fundamental features. total spin precession frequency in the vertical plane due to electric and magnetic dipole moments an imperfect ring a measured. position of elements unchanged from clockwise counter-clockwise operation. calibration effective Lorentz factor using polarization measurement horizontal carried out alternately each CW CCW And approximate relationship between frequencies different planes set exclude them mixing expected EDM signal at sensitivity...
The High Intensity Muon Beams (HIMB) project at the Paul Scherrer Institute (PSI) will deliver muon beams with unprecedented intensities of up to 1010muons/s for next-generation particle physics and material science experiments. This represents a hundredfold increase over current state-of-the-art intensities, also provided by PSI. We performed beam dynamics optimisations studies design HIMB beamlines MUH2 MUH3 using Graphics Transport, Turtle, G4beamline, latter incorporating PSI’s own...
The Muon g-2 Experiment has achieved a significant milestone by measuring the positive muon anomalous magnetic moment to an unprecedented accuracy of 0.20 ppm, paving way better understanding particle physics, including beyond-the-Standard-Model possibilities. In experiment, muons are circulated within storage ring, and their precession frequency — spin relative momentum is determined from decay positron time energy data, captured using calorimeters. support accurate ring simulations, we...
The Paul Scherrer Institute (PSI) currently delivers the most intense continuous muon beam in world with up to several 108μ+/s and aims at maintaining its leadership by upgrading beamlines within High Intensity Muon Beams project (HIMB) (Eichler et al. 2022; Dal Maso 2023) projected intensities 1010μ+/s, having a huge impact on low-energy, high-precision based searches. To reach such high quality tunes during commissioning, novel tuning strategy is required, due large aberrations introduced...
We developed a highly accurate and fully Maxwellian conformal mapping method for calculation of main fields electrostatic particle optical elements. A remarkable advantage this is the possibility rapid recalculations with geometric asymmetries mispowered plates. used to calculate multipole terms high voltage quadrupoles in storage ring Muon [Formula: see text] Experiment (FNAL-E-0989). Next, we demonstrate that an effect where observed tunes correspond about higher compared which are set...
The code COSY INFINITY uses a beamline coordinate system with Frenet–Serret frame relative to the reference particle, and calculates differential algebra-valued transfer maps by integrating ODEs of motion in respective vector space over algebra (DA). We described performed computation DA map an electrostatic spherical deflector laboratory using two conventional methods: (1) numerical integrator (2) computing analytically closed form properties elliptical orbits from Kepler theory. compared...