eeFACT2018 - List of Authors (Levichev, E.B.)

Paper	Title	Page
MOYBA02	Low Energy Inverse Crossing e⁺e⁻ Collider for (Mu+Mu-) Bound State Production and Study
	A.V. Bogomyagkov, V.P. Druzhinin, E.B. Levichev, A.I. Milstein, S.V. Sinyatkin BINP SB RAS, Novosibirsk, Russia
	From six leptonic atoms (e⁺e⁻), (μ+e-), (μ+μ-), (τ+e-), (τ+μ-), (τ+τ-) only positronium (e⁺e⁻) and muonium (μ+e-) were observed. Observation and study of dimuonium (μ+μ-) will test QED and quantum mechanics computations in the new regime. Dimuonium radius is 200 times smaller than positronium; therefore, it has a higher new-physics reach potential in comparison with other exotic atoms. We propose a low energy e⁺e⁻ collider for production of the not yet observed (μ+μ-) bound system. Low beam energy E(beam)=400 MeV and small circumference Π=30 m of the machine make it inexpensive to manufacture and operate. Large crossing angle (75 degrees)of e⁺e⁻ beams produces dimuonium with non-zero momentum shifting decay point from beams collision area and providing effective suppression of the main source of background – elastic e⁺e⁻ scattering. The peak luminosity at μ+μ- production threshold is 8×10³¹ cm^-2s^-1. Reversing one of the beams direction allows to study π± and η mesons with high luminosity.
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MOYBA03	A Project of Super Charm-Tau Factory in Novosibirsk
	E.B. Levichev BINP SB RAS, Novosibirsk, Russia
	The paper concerns the status of the e⁺e⁻ collider Super Charm-Tau Factory at Budker INP, Novosibirsk, Russia. In particularly the issues related to the lattice design, collider performance, accelerator systems, CDR preparation, etc. are discussed. The project aims at realization a variable energy flavor factory between 2 GeV and 6 GeV in the center of mass with unprecedented luminosity of 1035 cm^-2s⁻¹ provided by a Crab Waist collision technology.
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TUOAB01	Dynamic Aperture Limitation Due to the Synchrotron Radiation from Quadrupole Magnets in very High Energy Colliders	46
	A.V. Bogomyagkov, S.A. Glukhov, E.B. Levichev, S.V. Sinyatkin BINP SB RAS, Novosibirsk, Russia
	In a lepton storage ring of very high energy (e.g. in the e⁺e^- Higgs factory) synchrotron radiation from quadrupoles constraints transverse dynamic aperture even in the absence of any magnetic nonlinearities. This was observed in LEP and the Future Circular e⁺e^- Collider (FCC-ee). Synchrotron radiation in the quadrupoles modulates the particle energy at the double betatron frequency. Energy modulation varies transverse focusing strength at the same frequency and creates a parametric resonance of the betatron oscillations. Starting from 6d equations of motion we derive and solve the relevant differential equation describing the resonance, and show good agreement between analytical results and numerical simulation.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-eeFACT2018-TUOAB01
About •	paper received ※ 11 October 2018 paper accepted ※ 19 February 2019 issue date ※ 21 April 2019
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WEXBA02	Machine Detector Interface for the e⁺e⁻ Future Circular Collider	201
	M. Boscolo, O.R. Blanco-García INFN/LNF, Frascati (Roma), Italy N. Bacchetta INFN- Sez. di Padova, Padova, Italy E. Belli INFN-Roma, Roma, Italy M. Benedikt, H. Burkhardt, D. El Khechen, K. Elsener, M. Gil Costa, P. Janot, R. Kersevan, A.M. Kolano, E. Leogrande, M. Lueckof, E. Perez, N.A. Tehrani, H.H.J. Ten Kate, O. Viazlo, G.G. Voutsinas, F. Zimmermann CERN, Meyrin, Switzerland A.P. Blondel, M. Koratzinos DPNC, Genève, Switzerland A.V. Bogomyagkov, E.B. Levichev, S.V. Sinyatkin BINP SB RAS, Novosibirsk, Russia F. Collamati INFN-Roma1, Rome, Italy M. Dam NBI, København, Denmark A. Novokhatski, M.K. Sullivan SLAC, Menlo Park, California, USA K. Oide KEK, Ibaraki, Japan
	The international Future Circular Collider (FCC) study~[fccweb] aims at a design of p-p, \rm e⁺e^-, e-p colliders to be built in a new 100~km tunnel in the Geneva region. The \rm e⁺e^- collider (FCC-ee) has a centre of mass energy range between 90 (Z-pole) and 375~GeV (t\bar{t}). To reach such unprecedented energies and luminosities, the design of the interaction region is crucial. The crab-waist collision scheme~[ref:cw] has been chosen for the design and it will be compatible with all beam energies. In this paper we will describe the machine detector interface layout including the solenoid compensation scheme. We will describe how this layout fulfills all the requirements set by the parameters table and by the physical constraints. We will summarize the studies of the impact of the synchrotron radiation, the analysis of trapped modes and of the backgrounds induced by single beam and luminosity effects giving an estimate of the losses in the interaction region and in the detector.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-eeFACT2018-WEXBA02
About •	paper received ※ 03 November 2018 paper accepted ※ 19 February 2019 issue date ※ 21 April 2019
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Paper

Title

Page

MOYBA02

Low Energy Inverse Crossing e⁺e⁻ Collider for (Mu+Mu-) Bound State Production and Study

A.V. Bogomyagkov, V.P. Druzhinin, E.B. Levichev, A.I. Milstein, S.V. Sinyatkin
BINP SB RAS, Novosibirsk, Russia

From six leptonic atoms (e⁺e⁻), (μ+e-), (μ+μ-), (τ+e-), (τ+μ-), (τ+τ-) only positronium (e⁺e⁻) and muonium (μ+e-) were observed. Observation and study of dimuonium (μ+μ-) will test QED and quantum mechanics computations in the new regime. Dimuonium radius is 200 times smaller than positronium; therefore, it has a higher new-physics reach potential in comparison with other exotic atoms. We propose a low energy e⁺e⁻ collider for production of the not yet observed (μ+μ-) bound system. Low beam energy E(beam)=400 MeV and small circumference Π=30 m of the machine make it inexpensive to manufacture and operate. Large crossing angle (75 degrees)of e⁺e⁻ beams produces dimuonium with non-zero momentum shifting decay point from beams collision area and providing effective suppression of the main source of background – elastic e⁺e⁻ scattering. The peak luminosity at μ+μ- production threshold is 8×10³¹ cm^-2s^-1. Reversing one of the beams direction allows to study π± and η mesons with high luminosity.

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MOYBA03

A Project of Super Charm-Tau Factory in Novosibirsk

E.B. Levichev
BINP SB RAS, Novosibirsk, Russia

The paper concerns the status of the e⁺e⁻ collider Super Charm-Tau Factory at Budker INP, Novosibirsk, Russia. In particularly the issues related to the lattice design, collider performance, accelerator systems, CDR preparation, etc. are discussed. The project aims at realization a variable energy flavor factory between 2 GeV and 6 GeV in the center of mass with unprecedented luminosity of 1035 cm^-2s⁻¹ provided by a Crab Waist collision technology.

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TUOAB01

Dynamic Aperture Limitation Due to the Synchrotron Radiation from Quadrupole Magnets in very High Energy Colliders

46

A.V. Bogomyagkov, S.A. Glukhov, E.B. Levichev, S.V. Sinyatkin
BINP SB RAS, Novosibirsk, Russia

In a lepton storage ring of very high energy (e.g. in the e⁺e^- Higgs factory) synchrotron radiation from quadrupoles constraints transverse dynamic aperture even in the absence of any magnetic nonlinearities. This was observed in LEP and the Future Circular e⁺e^- Collider (FCC-ee). Synchrotron radiation in the quadrupoles modulates the particle energy at the double betatron frequency. Energy modulation varies transverse focusing strength at the same frequency and creates a parametric resonance of the betatron oscillations. Starting from 6d equations of motion we derive and solve the relevant differential equation describing the resonance, and show good agreement between analytical results and numerical simulation.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-eeFACT2018-TUOAB01

About •

paper received ※ 11 October 2018 paper accepted ※ 19 February 2019 issue date ※ 21 April 2019

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEXBA02

Machine Detector Interface for the e⁺e⁻ Future Circular Collider

201

M. Boscolo, O.R. Blanco-García
INFN/LNF, Frascati (Roma), Italy
N. Bacchetta
INFN- Sez. di Padova, Padova, Italy
E. Belli
INFN-Roma, Roma, Italy
M. Benedikt, H. Burkhardt, D. El Khechen, K. Elsener, M. Gil Costa, P. Janot, R. Kersevan, A.M. Kolano, E. Leogrande, M. Lueckof, E. Perez, N.A. Tehrani, H.H.J. Ten Kate, O. Viazlo, G.G. Voutsinas, F. Zimmermann
CERN, Meyrin, Switzerland
A.P. Blondel, M. Koratzinos
DPNC, Genève, Switzerland
A.V. Bogomyagkov, E.B. Levichev, S.V. Sinyatkin
BINP SB RAS, Novosibirsk, Russia
F. Collamati
INFN-Roma1, Rome, Italy
M. Dam
NBI, København, Denmark
A. Novokhatski, M.K. Sullivan
SLAC, Menlo Park, California, USA
K. Oide
KEK, Ibaraki, Japan

The international Future Circular Collider (FCC) study~[fccweb] aims at a design of p-p, \rm e⁺e^-, e-p colliders to be built in a new 100~km tunnel in the Geneva region. The \rm e⁺e^- collider (FCC-ee) has a centre of mass energy range between 90 (Z-pole) and 375~GeV (t\bar{t}). To reach such unprecedented energies and luminosities, the design of the interaction region is crucial. The crab-waist collision scheme~[ref:cw] has been chosen for the design and it will be compatible with all beam energies. In this paper we will describe the machine detector interface layout including the solenoid compensation scheme. We will describe how this layout fulfills all the requirements set by the parameters table and by the physical constraints. We will summarize the studies of the impact of the synchrotron radiation, the analysis of trapped modes and of the backgrounds induced by single beam and luminosity effects giving an estimate of the losses in the interaction region and in the detector.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-eeFACT2018-WEXBA02

About •

paper received ※ 03 November 2018 paper accepted ※ 19 February 2019 issue date ※ 21 April 2019

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)