RuPAC2016 - List of Keywords (lattice)

Paper	Title	Other Keywords	Page
MOZMH03	Search for the Charged Particle Electric Dipole Moments in Storage Rings	dipole, polarization, sextupole, storage-ring	6
	V. Senichev FZJ, Jülich, Germany
	The idea of searching for the electric dipole moment (EDM) of proton and deuteron using polarized beams in a storage ring was originally proposed at Brookhaven National Laboratory (BNL), USA. Currently, the Jülich Electric Dipole moment Investigations (JEDI) collaboration develops the conceptual design of such a ring specifically for the search of the deuteron electrical dipole moment (dEDM). The idea is that the oscillation of the spin due to a possible finite electric dipole moment is separated from the influence of the magnetic dipole moment (MDM), and the spin behavior indicates the existence of dEDM. In connection with this problem, two questions arise: (i) how to create conditions for maximum growth of the total EDM signal of all particles in the beam bunch, and (ii) how to differentiate the EDM signal from the induced MDM signal. For the design of such a ring, we need to address three major challenges: - the ring lattice should meet the conditions of beam stability, and it has to have incorporated straight sections to accommodate the accelerating station, equipment for injection and extraction of the beam, a polarimeter, and sextupoles; - the polarization lifetime of the beam must be around ~1000 seconds; - systematic errors have to be minimized to eliminate the induced fake EDM signal. In my contribution, I will present the current status of the project.
	Slides MOZMH03 [5.491 MB]
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WECBMH02	Collector Ring Project at FAIR: Present Status	quadrupole, injection, sextupole, operation	86
	P.Yu. Shatunov, V.V. Anashin, E.A. Bekhtenev, D.E. Berkaev, M.I. Bryzgunov, D. Gurov, A.S. Kasaev, V.V. Kolmogorov, I. Koop, A.A. Krasnov, O.I. Meshkov, Yu. A. Rogovsky, T.V. Rybitskaya, A.V. Semenov, Y.M. Shatunov, S.V. Shiyankov, D.B. Shwartz, A.A. Starostenko, A.V. Sukhanov, A.S. Tsyganov, A.V. Utkin BINP SB RAS, Novosibirsk, Russia
	In November 2013, the FAIR management delegated the responsibility for the technical design, construction, installation, and commissioning of the whole CR and its components from GSI to Budker Institute of Nuclear Physics (BINP). Since that time a lot of modifications of the original design were made aiming to improve the beam parameters and the machine performance. This work shows the present status of the development.
	Slides WECBMH02 [20.497 MB]
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

FRCAMH07	NICA Collider Lattice Optimization	collider, quadrupole, ion, dipole	166
	O.S. Kozlov, A.V. Butenko, H.G. Khodzhibagiyan, S.A. Kostromin, I.N. Meshkov, A.O. Sidorin, E. Syresin, G.V. Trubnikov JINR, Dubna, Moscow Region, Russia
	The Nuclotron-based Ion Collider fAcility (NICA) - accelerator complex is being constructed at JINR. It is aimed to the collider experiments with ions and protons and has to provide the ion-ion (Au+79) and ion-proton collision in the energy range of 1-4.5 GeV/amu and also polarized proton-proton and deuteron-deuteron collisions. Each of two collider ring has a racetrack shape with two bending arcs and two long straight sections. Beams are separated in vertical plane and come into collisions in two IPs. Dynamic aperture of the NICA collider has been studied for different parameters of the optics at IP. Effects of the fringe fields of structural elements are considered in the optimization of the collider lattice.
	Slides FRCAMH07 [4.547 MB]
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

FRCAMH08	Dynamic Aperture Optimization of the NICA Collider	octupole, quadrupole, dynamic-aperture, resonance	169
	S.A. Glukhov, E.B. Levichev BINP SB RAS, Novosibirsk, Russia
	NICA is a proton and heavy ion collider being built at JINR in Dubna, Russia. It was shown that nonlinear quadrupole fringe fields are among the main factors limiting dynamic aperture of the machine. In the present paper the following ways of dynamic aperture optimization were studied: betatron tunes optimization and placing octupole lenses to the lattice to compensate fringe fields' effect.
	Slides FRCAMH08 [2.480 MB]
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPSB007	On Application of Monte Carlo Method for Poisson Problem Solving	electron, controls, simulation, plasma	367
	L.V. Vladimirova, I.D. Rubtsova St. Petersburg State University, St. Petersburg, Russia
	The paper presents the application of random grid walk for Dirichlet problem solving for Poisson equation. Boundary value problem is discretized and reduced to the system of linear algebraic equations. The matrix of this system is used for stochastic matrix constructing. Thus, there is a possibility of Markov chains obtaining. The special random value is defined on Markov chain trajectories; this value is used for approximation of the desired solution. The advantages of this method are discussed in the paper. The algorithm is applied for electric potential calculation in the cell of support lattice of exit window in large-aperture electron accelerator.
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPSB010	The Use of Multi-Objective Genetic Algorithms for Accelerator and Light Source Optimization	emittance, operation, dynamic-aperture, quadrupole	376
	Y.A. Fomin, V. Korchuganov, A.S. Smygacheva NRC, Moscow, Russia
	Funding: The reported study was funded by RFBR according to the research project No. 16-32-00336 mol_a. The nonlinear effects are very important in the development of new accelerators and synchrotron light sources. Nowadays they are one of the main factors limiting the achievement of the required facility parameters. In many cases in the development of new accelerators the analytical estimations give very coarse results and in some cases they don't apply at all. Therefore, the best way to research and design accelerators is to use numerical simulation. Nevertheless, very often during complex physical process simulation (taking into account many nonlinear effects) the use of classical optimization methods is difficult and does not give the desired results. The article deals with the application of multi-objective optimization using genetic algorithms for accelerators and light sources. These algorithms allow both simple linear and complex nonlinear accelerator structures to be optimized with the same effectiveness to achieve the required facility parameters.
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPSB014	Symmetrical Parameterization for 6D Fully Coupled One-Turn Transport Matrix	coupling, emittance, operation, synchrotron	389
	S.A. Glukhov BINP SB RAS, Novosibirsk, Russia
	Symmetry properties of 6D and 4D one-turn symplectic transport matrices were studied. A new parameterization was proposed for 6D matrix, which is an extension of the Lebedev-Bogacz parameterization for 4D case. The parameterization is fully symmetric relative to radial, vertical and longitudinal motion. It can be useful for lattices with strong coupling between all degrees of freedom.
	Poster WEPSB014 [0.908 MB]
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPSB017	Chromatic and Nonlinear Dynamics of Antiprotons Injected to Collector Ring at FAIR	antiproton, sextupole, target, septum	398
	D.B. Shwartz, I. Koop, P.Yu. Shatunov BINP SB RAS, Novosibirsk, Russia D.B. Shwartz NSU, Novosibirsk, Russia
	Collector Ring (CR) is the storage ring for capturing and stochastic cooling of secondary beams of antiprotons or secondary ions. It is a part of a FAIR project being presently at the early start of a construction phase. Due to the proposed large acceptance in both transverse and longitudinal phase spaces, the chromatic aberrations and their correction with sextupoles are very important for capture efficiency. Calculations results for beam transfer from Pbar target to the ring are presented.
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPSB019	Orbital Motion in Multipole Fields via Multiscale Decomposition	controls, storage-ring, multipole, octupole	404
	A.N. Fedorova, M.G. Zeitlin RAS/IPME, St. Petersburg, Russia
	We present applications of methods of nonlinear local harmonic analy- sis in variational framework for a description of multiscale decomposition in polynomial/rational approximations (up to any order) for nonlinear motions in arbitrary n-pole fields. Our approach is based on the methods allowed to consider dynamical beam/particle localization in phase space and provided exact multiscale representations via nonlinear high-localized eigenmodes for observables with exact control of contributions to motion from each underlying hidden scale.
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPSB028	Computer Simulation of the Slow Beam Extraction From Nuclotron	sextupole, extraction, dipole, resonance	422
	A.D. Kovalenko, I.L. Avvakumova JINR/VBLHEP, Moscow, Russia A.D. Kovalenko, V.A. Mikhaylov JINR, Dubna, Moscow Region, Russia
	The results of modelling of ion's motion during beam slow extraction from Nuclotron at the energy 6 GeV/Amu are shown in this work. Influence of sextupole field component of dipole magnets and fringe fields of Lambertson's magnets on the characteristics of extracted beam was analyzed. The calculations have been done via MadX. * Issinsky I., Mikhaylov V., Shchepunov V. Nuclotron lattice. Proceedings of EPAC 1990, p.458. Kovalenko A. Nuclotron: status and future. Proceedings of EPAC 2000, p.554. * Agapov N. et al. Slow beam extraction from Nuclotron. Proceedings of the 2001 Particle Accelerator Conference, p.1646.
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Other Keywords

Page

MOZMH03

Search for the Charged Particle Electric Dipole Moments in Storage Rings

dipole, polarization, sextupole, storage-ring

6

V. Senichev
FZJ, Jülich, Germany

The idea of searching for the electric dipole moment (EDM) of proton and deuteron using polarized beams in a storage ring was originally proposed at Brookhaven National Laboratory (BNL), USA. Currently, the Jülich Electric Dipole moment Investigations (JEDI) collaboration develops the conceptual design of such a ring specifically for the search of the deuteron electrical dipole moment (dEDM). The idea is that the oscillation of the spin due to a possible finite electric dipole moment is separated from the influence of the magnetic dipole moment (MDM), and the spin behavior indicates the existence of dEDM. In connection with this problem, two questions arise: (i) how to create conditions for maximum growth of the total EDM signal of all particles in the beam bunch, and (ii) how to differentiate the EDM signal from the induced MDM signal. For the design of such a ring, we need to address three major challenges: - the ring lattice should meet the conditions of beam stability, and it has to have incorporated straight sections to accommodate the accelerating station, equipment for injection and extraction of the beam, a polarimeter, and sextupoles; - the polarization lifetime of the beam must be around ~1000 seconds; - systematic errors have to be minimized to eliminate the induced fake EDM signal. In my contribution, I will present the current status of the project.

Slides MOZMH03 [5.491 MB]

Export •

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

WECBMH02

Collector Ring Project at FAIR: Present Status

quadrupole, injection, sextupole, operation

86

P.Yu. Shatunov, V.V. Anashin, E.A. Bekhtenev, D.E. Berkaev, M.I. Bryzgunov, D. Gurov, A.S. Kasaev, V.V. Kolmogorov, I. Koop, A.A. Krasnov, O.I. Meshkov, Yu. A. Rogovsky, T.V. Rybitskaya, A.V. Semenov, Y.M. Shatunov, S.V. Shiyankov, D.B. Shwartz, A.A. Starostenko, A.V. Sukhanov, A.S. Tsyganov, A.V. Utkin
BINP SB RAS, Novosibirsk, Russia

In November 2013, the FAIR management delegated the responsibility for the technical design, construction, installation, and commissioning of the whole CR and its components from GSI to Budker Institute of Nuclear Physics (BINP). Since that time a lot of modifications of the original design were made aiming to improve the beam parameters and the machine performance. This work shows the present status of the development.

Slides WECBMH02 [20.497 MB]

Export •

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

FRCAMH07

NICA Collider Lattice Optimization

collider, quadrupole, ion, dipole

166

O.S. Kozlov, A.V. Butenko, H.G. Khodzhibagiyan, S.A. Kostromin, I.N. Meshkov, A.O. Sidorin, E. Syresin, G.V. Trubnikov
JINR, Dubna, Moscow Region, Russia

The Nuclotron-based Ion Collider fAcility (NICA) - accelerator complex is being constructed at JINR. It is aimed to the collider experiments with ions and protons and has to provide the ion-ion (Au+79) and ion-proton collision in the energy range of 1-4.5 GeV/amu and also polarized proton-proton and deuteron-deuteron collisions. Each of two collider ring has a racetrack shape with two bending arcs and two long straight sections. Beams are separated in vertical plane and come into collisions in two IPs. Dynamic aperture of the NICA collider has been studied for different parameters of the optics at IP. Effects of the fringe fields of structural elements are considered in the optimization of the collider lattice.

Slides FRCAMH07 [4.547 MB]

Export •

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

FRCAMH08

Dynamic Aperture Optimization of the NICA Collider

octupole, quadrupole, dynamic-aperture, resonance

169

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

NICA is a proton and heavy ion collider being built at JINR in Dubna, Russia. It was shown that nonlinear quadrupole fringe fields are among the main factors limiting dynamic aperture of the machine. In the present paper the following ways of dynamic aperture optimization were studied: betatron tunes optimization and placing octupole lenses to the lattice to compensate fringe fields' effect.

Slides FRCAMH08 [2.480 MB]

Export •

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

WEPSB007

On Application of Monte Carlo Method for Poisson Problem Solving

electron, controls, simulation, plasma

367

L.V. Vladimirova, I.D. Rubtsova
St. Petersburg State University, St. Petersburg, Russia

The paper presents the application of random grid walk for Dirichlet problem solving for Poisson equation. Boundary value problem is discretized and reduced to the system of linear algebraic equations. The matrix of this system is used for stochastic matrix constructing. Thus, there is a possibility of Markov chains obtaining. The special random value is defined on Markov chain trajectories; this value is used for approximation of the desired solution. The advantages of this method are discussed in the paper. The algorithm is applied for electric potential calculation in the cell of support lattice of exit window in large-aperture electron accelerator.

Export •

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

WEPSB010

The Use of Multi-Objective Genetic Algorithms for Accelerator and Light Source Optimization

emittance, operation, dynamic-aperture, quadrupole

376

Y.A. Fomin, V. Korchuganov, A.S. Smygacheva
NRC, Moscow, Russia

Funding: The reported study was funded by RFBR according to the research project No. 16-32-00336 mol_a.
The nonlinear effects are very important in the development of new accelerators and synchrotron light sources. Nowadays they are one of the main factors limiting the achievement of the required facility parameters. In many cases in the development of new accelerators the analytical estimations give very coarse results and in some cases they don't apply at all. Therefore, the best way to research and design accelerators is to use numerical simulation. Nevertheless, very often during complex physical process simulation (taking into account many nonlinear effects) the use of classical optimization methods is difficult and does not give the desired results. The article deals with the application of multi-objective optimization using genetic algorithms for accelerators and light sources. These algorithms allow both simple linear and complex nonlinear accelerator structures to be optimized with the same effectiveness to achieve the required facility parameters.

Export •

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

WEPSB014

Symmetrical Parameterization for 6D Fully Coupled One-Turn Transport Matrix

coupling, emittance, operation, synchrotron

389

S.A. Glukhov
BINP SB RAS, Novosibirsk, Russia

Symmetry properties of 6D and 4D one-turn symplectic transport matrices were studied. A new parameterization was proposed for 6D matrix, which is an extension of the Lebedev-Bogacz parameterization for 4D case. The parameterization is fully symmetric relative to radial, vertical and longitudinal motion. It can be useful for lattices with strong coupling between all degrees of freedom.

Poster WEPSB014 [0.908 MB]

Export •

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

WEPSB017

Chromatic and Nonlinear Dynamics of Antiprotons Injected to Collector Ring at FAIR

antiproton, sextupole, target, septum

398

D.B. Shwartz, I. Koop, P.Yu. Shatunov
BINP SB RAS, Novosibirsk, Russia
D.B. Shwartz
NSU, Novosibirsk, Russia

Collector Ring (CR) is the storage ring for capturing and stochastic cooling of secondary beams of antiprotons or secondary ions. It is a part of a FAIR project being presently at the early start of a construction phase. Due to the proposed large acceptance in both transverse and longitudinal phase spaces, the chromatic aberrations and their correction with sextupoles are very important for capture efficiency. Calculations results for beam transfer from Pbar target to the ring are presented.

Export •

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

WEPSB019

Orbital Motion in Multipole Fields via Multiscale Decomposition

controls, storage-ring, multipole, octupole

404

A.N. Fedorova, M.G. Zeitlin
RAS/IPME, St. Petersburg, Russia

We present applications of methods of nonlinear local harmonic analy- sis in variational framework for a description of multiscale decomposition in polynomial/rational approximations (up to any order) for nonlinear motions in arbitrary n-pole fields. Our approach is based on the methods allowed to consider dynamical beam/particle localization in phase space and provided exact multiscale representations via nonlinear high-localized eigenmodes for observables with exact control of contributions to motion from each underlying hidden scale.

Export •

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

WEPSB028

Computer Simulation of the Slow Beam Extraction From Nuclotron

sextupole, extraction, dipole, resonance

422

A.D. Kovalenko, I.L. Avvakumova
JINR/VBLHEP, Moscow, Russia
A.D. Kovalenko, V.A. Mikhaylov
JINR, Dubna, Moscow Region, Russia

The results of modelling of ion's motion during beam slow extraction from Nuclotron at the energy 6 GeV/Amu are shown in this work. Influence of sextupole field component of dipole magnets and fringe fields of Lambertson's magnets on the characteristics of extracted beam was analyzed. The calculations have been done via MadX.
* Issinsky I., Mikhaylov V., Shchepunov V. Nuclotron lattice. Proceedings of EPAC 1990, p.458.
** Kovalenko A. Nuclotron: status and future. Proceedings of EPAC 2000, p.554.
*** Agapov N. et al. Slow beam extraction from Nuclotron. Proceedings of the 2001 Particle Accelerator Conference, p.1646.

Export •

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