Valeri Lebedev
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View article: Figure-8 synchrotron for polarized protons and deuteronsat the NICA acceleration complex
Figure-8 synchrotron for polarized protons and deuteronsat the NICA acceleration complex Open
The paper considers a possibility to use the figure-8 synchrotron as a replacement of the Nuclotron for acceleration of polarized proton and deuteron beams at the NICA accelerator complex. The synchrotron arcs are placed inside the NICA co…
View article: Status of the Proton EDM Experiment (pEDM)
Status of the Proton EDM Experiment (pEDM) Open
The Proton EDM Experiment (pEDM) is the first direct search for the proton electric dipole moment (EDM) with the aim of being the first experiment to probe the Standard Model (SM) prediction of any particle EDM. Phase-I of pEDM will achiev…
View article: Operation of Rf Systems During Joint Booster and Nuclotron Sessions
Operation of Rf Systems During Joint Booster and Nuclotron Sessions Open
The article discusses the results of commissioning of RF systems of the NICA injection complex and plans for their further development. The preparation of the injection complex for injection into the collider requires an increase in the be…
View article: High energy cooling
High energy cooling Open
The paper considers methods of heavy particle cooling for high energy colliders in the energy range of the RHIC-based ep-collider. There are two major methods of the cooling — the electron cooling and stochastic cooling. The latter can be …
View article: High Energy Cooling
High Energy Cooling Open
The paper considers methods of particle cooling applicable to beam cooling in high energy hadron colliders at the collision energy. Presently, there are two major methods of the cooling the electron cooling and stochastic cooling. The late…
View article: High energy cooling
High energy cooling Open
The paper considers methods of particle cooling mostly concentrating on cooling of high energy heavy particles in the high energy colliders. Presently, there are two major methods of the cooling the electron cooling and stochastic cooling.…
View article: Numerical modeling of a proof-of-principle experiment on optical stochastic cooling at an electron storage ring
Numerical modeling of a proof-of-principle experiment on optical stochastic cooling at an electron storage ring Open
Cooling of beams circulating in storage rings is critical for many applications including particle colliders and synchrotron light sources. A method enabling unprecedented beam-cooling rates, optical stochastic cooling (OSC), was recently …
View article: Electron Cooling in NICA Acceleration Complex
Electron Cooling in NICA Acceleration Complex Open
The Nuclotron-based Ion Collider fAcility (NICA) is under assembling at JINR. NICA will provide colliding beams for study of hot strongly interacting baryonic matter and spin physics. The NICA injection complex includes a tandem of 2 super…
View article: Numerical Modeling of a Proof-of-Principle Experiment on Optical Stochastic Cooling at the IOTA Electron Storage Ring
Numerical Modeling of a Proof-of-Principle Experiment on Optical Stochastic Cooling at the IOTA Electron Storage Ring Open
Cooling of beams circulating in storage rings is critical for many applications including particle colliders and synchrotron light sources. A method enabling unprecedented beam-cooling rates, optical stochastic cooling (OSC), was recently …
View article: Physics Design of the Project X CW Linac
Physics Design of the Project X CW Linac Open
The general design of the 3 GeV superconducting CW linac of the Project X is presented. Different physical and technical issues and limitations that determine the linac concept are discussed. The results of the RF system optimization are p…
View article: The Optical Stochastic Cooling Program at Fermilab
The Optical Stochastic Cooling Program at Fermilab Open
explore the physics and technology of OSC in amplified and non-amplified configurations. We also plan to investigate the cooling and manipulation of a single electron stored in the ring. The OSC apparatus is currently being fabricated, and…
View article: Electron Cooling for the Antiproton Accumulator
Electron Cooling for the Antiproton Accumulator Open
A possibility to utilize electron cooling in the Fermilab Antiproton Accumulator (AA) is studied. It is shown that, for the existing stochastic cooling system and 0.5 Ampere x 10 m of electron cooler, the accumulated antiproton current cou…
View article: Subcritical-voltage magnetron RF power source
Subcritical-voltage magnetron RF power source Open
A system and method of operating a magnetron power source can achieve a broad range of output power control by operating a magnetron with its cathode voltage lower than that needed for free running oscillations (e.g., below the Kapitsa cri…
View article: 3D Optical Stochastic Cooling Data
3D Optical Stochastic Cooling Data Open
Example data and processing/analysis for 3D Optical Stochastic Cooling at Fermilab's IOTA ring
View article: 3D Optical Stochastic Cooling Data
3D Optical Stochastic Cooling Data Open
Example data and processing/analysis for 3D Optical Stochastic Cooling at Fermilab's IOTA ring
View article: The storage ring proton EDM experiment
The storage ring proton EDM experiment Open
We describe a proposal to search for an intrinsic electric dipole moment (EDM) of the proton with a sensitivity of \targetsens, based on the vertical rotation of the polarization of a stored proton beam. The New Physics reach is of order $…
View article: Experimental demonstration of OSC at IOTA: IOTA Run #3 (Report)
Experimental demonstration of OSC at IOTA: IOTA Run #3 (Report) Open
Optical Stochastic Cooling (OSC) is an optical-bandwidth extension of Stochastic Cooling that could advance the state-of-the-art cooling rate in beam cooling by three to four orders of magnitude. The concept of OSC was first suggested in t…
View article: Versatile Multi-MW Proton Facility with Synchrotron Upgrade of Fermilab Proton Complex
Versatile Multi-MW Proton Facility with Synchrotron Upgrade of Fermilab Proton Complex Open
DUNE/LBNF constitutes an international multi-decadal physics program for leading-edge neutrino science and proton decay studies [1] and is expected to serve as the flagship particle experiment based at Fermilab.
View article: Electric dipole moments and the search for new physics
Electric dipole moments and the search for new physics Open
Static electric dipole moments of nondegenerate systems probe mass scales for physics beyond the Standard Model well beyond those reached directly at high energy colliders. Discrimination between different physics models, however, requires…
View article: Electric dipole moments and the search for new physics
Electric dipole moments and the search for new physics Open
Static electric dipole moments of nondegenerate systems probe mass scales for physics beyond the Standard Model well beyond those reached directly at high energy colliders. Discrimination between different physics models, however, requires…
View article: The Conceptional Design of the Shielding Layout and Beam Absorber at the PXIE
The Conceptional Design of the Shielding Layout and Beam Absorber at the PXIE Open
The Project X Injector Experiment (PXIE) is a prototype of the Project X front end. A 30 MeV, 50 kW beam will be used to validate the design concept of the Project X. This paper discusses a design of the accelerator enclosure radiation shi…
View article: New Equalizers for Antiproton Stochastic Cooling at Fermilab
New Equalizers for Antiproton Stochastic Cooling at Fermilab Open
In the continuous effort to improve antiproton stacking rate, a new type of equalizers has been developed and installed in antiproton accumulator. The R&D of these new equalizers is described in this paper. Equalizers are used in Fermi…
View article: Improvement of Digital Filter for the FNAL Booster Transverse Dampers
Improvement of Digital Filter for the FNAL Booster Transverse Dampers Open
Fermilab Booster has two transverse dampers which independently suppress beam instabilities in the horizontal and vertical planes. A suppression of the common mode signal is achieved by digital notch filter which is based on subtracting be…
View article: 8 GeV beam line optics optimization for the rapid antiproton transfers at Fermilab
8 GeV beam line optics optimization for the rapid antiproton transfers at Fermilab Open
Tevatron Run-II upgrade requires a significant increase of the efficiency and speed of the antiproton transfers from the Accumulator to the Recycler. The goal for the total transfer time is challenging a reduction from 1 hour down to a few…
View article: Stochastic Cooling with Schottky Band Overlap
Stochastic Cooling with Schottky Band Overlap Open
Optimal use of stochastic cooling is essential to maximize the antiproton stacking rate for Tevatron Run II. Good understanding and characterization of the cooling is important for the optimization. The paper is devoted to derivation of th…
View article: A Tool for Longitudinal Beam Dynamics in Synchrotrons
A Tool for Longitudinal Beam Dynamics in Synchrotrons Open
A number of codes are available to simulate longitudinal dynamics in synchrotrons. Some established ones include TIBETAN, LONG1D, ESME and ORBIT. While they embody a wealth of accumulated wisdom and experience, most of these codes were wri…
View article: Analysis of beam loss mechanism in the Project X linac
Analysis of beam loss mechanism in the Project X linac Open
Minimization of the beam losses in a multi-MW H{sup -} linac such as ProjectX to a level below 1 W/m is a challenging task. The impact of different mechanism of beam stripping, including stripping in electric and magnetic fields, residual …
View article: Beam dynamics issues of muon acceleration in RLA
Beam dynamics issues of muon acceleration in RLA Open
A conceptual design of a muon acceleration based on recirculating superconducting linacs is proposed. In the presented scenario, acceleration starts after ionization cooling at 210 MeV/c and proceeds to 20 GeV, where the beam is injected i…
View article: PXIE End-to-end Simulations
PXIE End-to-end Simulations Open
Construction of PXIE, (Project-X Injector Experiment) has recently begun. The goal is to validate the design of the injector and low energy acceleration front-end for a future Project-X. PXIE operates in CW mode and consists in an ion sour…