RUPAC2012 - List of Authors (Kozlov, O.S.)

Paper

Title

Page

Status of the Design and Test of Superconducting Magnets for the NICA Project

149

H.G. Khodzhibagiyan, P.G. Akishin, A.V. Bychkov, A. Donyagin, A.R. Galimov, O.S. Kozlov, G.L. Kuznetsov, I.N. Meshkov, V.A. Mikhaylov, E.V. Muravieva, P.I. Nikitaev, A.V. Shabunov, A.V. Smirnov, A.Y. Starikov, G.V. Trubnikov
JINR, Dubna, Moscow Region, Russia

NICA is a new accelerator complex being under design and construction at Joint Institute for Nuclear Research in Dubna. The actual design and the main characteristics of superconducting magnets for the NICA booster and the NICA collider are given. The magnets are based on a cold window frame iron yoke and a single-layered superconducting winding made from a hollow NbTi composite superconductor cable cooled with forced two-phase helium flow. The first results of cryogenic tests of the magnets for the NICA project are presented.

Slides THAOR03 [0.884 MB]

WEZCH03

Status of the Nuclotron

117

A.O. Sidorin, N.N. Agapov, A.V. Alfeev, V. Andreev, V. Batin, A.V. Butenko, D.E. Donets, E.D. Donets, A.V. Eliseev, V.V. Fimushkin, A.R. Galimov, E.V. Gorbachev, A. Govorov, E.V. Ivanov, V. Karpinsky, V.D. Kekelidze, H.G. Khodzhibagiyan, A. Kirichenko, A.G. Kobets, A.D. Kovalenko, O.S. Kozlov, N.I. Lebedev, I.N. Meshkov, V.A. Mikhailov, V. Monchinsky, S. Romanov, T.V. Rukoyatkina, N. Shurkhno, I. Slepnev, V. Slepnev, A.V. Smirnov, A. Sorin, G.V. Trubnikov, A. Tuzikov, B. Vasilishin, V. Volkov
JINR, Dubna, Moscow Region, Russia
O.I. Brovko, D.E. Donets, A.V. Philippov
JINR/VBLHEP, Dubna, Moscow region, Russia

One of the goals of present Nuclotron development is to test operational modes, diagnostic and beam control equipment required for R&D of the NICA collider elements. Main achievement in this direction are descussed. Results of the last runs of the Nuclotron operation are presented.

Slides WEZCH03 [3.582 MB]

MOPPA017

Collider of the NICA Accelerator Complex: Optical Structure and Beam Dynamics

278

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

Accelerator complex NICA, developed in VBLHEP JINR, must provide an ion-ion (Au79 +) and ion-proton collisions at energies of 1-4.5 GeV/u, as well as experiments on collisions of polarized proton-proton and deuteron-deuteron beams. The calculations of the optical properties of superconducting collider rings have been aimed to create appropriate conditions for the collisions of beams and obtaining the required luminosity parameters in the working range of energies. The collider characteristics and the beam dynamics have been worked out in most for ion-ion mode of the complex.

TUPPB003

Progress in NICA Booster Design

310

A.S. Valkovich, O.S. Kozlov, I.N. Meshkov, V.A. Mikhaylov, A.O. Sidorin, G.V. Trubnikov
JINR, Dubna, Moscow Region, Russia

New collider facility NICA * is envisioned to be built at The Joint Institute of Nuclear Research. The work presented explores issues of correction system of the Booster Synchrotron. The optimal arrangement of Beam Position Monitors and Orbit Correctors along the ring was investigated in order to achieve decent quality of the orbit correction. The SVD properties of the orbit correction system are presented. Optimal arrangement of the sextupole lenses for the correction of chromaticity of the ring was obtained. The reduction of the dynamical aperture due to the presence of the sextupole lenses was minimized by means of proper choice of betatron phase advances between the lenses.
* Design and construction of Nuclotron-based Ion Collider fAcility (NICA), Conceptual design report, Editors I.Meshkov, A.Sidorin, JINR, Dubna, 2008

MOBCH01

Storage, Acceleration and Short Bunched Beam Formation of 197Au+79 Ions in the NICA Collider

30

A.V. Eliseev, A.V. Smirnov
JINR, Dubna, Moscow Region, Russia
T. Katayama
GSI, Darmstadt, Germany
E. Kenzhbulatov, G.Y. Kurkin, V.M. Petrov, V. Volkov
BINP SB RAS, Novosibirsk, Russia
O.S. Kozlov, A.O. Sidorin, G.V. Trubnikov
JINR/VBLHEP, Dubna, Moscow region, Russia
I.N. Meshkov
JINR/DLNP, Dubna, Moscow region, Russia

The regimes of high intensity beam of 197Au⁷⁹⁺ ions in NICA Collider is considered. The first stage – ion storage is proposed to be performed with Barrier Bucket technique at ion energy of 1–3 GeV/u. Experiments in collider mode in this energy range can be performed at injection energy. For experiments at higher, up to 4.5 GeV/u, energy ions are accelerated with the same BB method. Formation of bunched beam is fulfilled in two steps – first, at 24th harmonics and then, final formation, at 72th harmonics of RF system. The possibility of achievement of designed bunch parameters is shown.

Slides MOBCH01 [0.807 MB]

MOPPA016

Dynamics of 197Au⁷⁸⁺ Ions Generated in Recombination with Cooling Electrons in the NICA Collider

275

A.V. Eliseev
JINR, Dubna, Moscow Region, Russia
O.S. Kozlov, A.B. Kuznetsov, A.V. Philippov, A.O. Sidorin, A. Tuzikov
JINR/VBLHEP, Dubna, Moscow region, Russia
I.N. Meshkov
JINR/DLNP, Dubna, Moscow region, Russia

Ions 197Au⁷⁸⁺ are generated in recombination of original bare nuclei 197Au⁷⁹⁺ with cooling electrons in the electron cooler of the NICA Collider. The ions 197Au⁷⁸⁺ dynamics is considered in the in energy range 1–4.5 GeV/u when ion beam is bunched with RF voltage (collision mode operation of the NICA Collider). It is shown that some part of 197Au⁷⁸⁺ ions can be involved in synchrotron motion when other part suffers a chaotic motion regime. Most of these ions live in vacuum chamber until further recombination in to the state of 197Au⁷⁷⁺ and leave the Collider acceptance very fast. The evolution in time of ion distribution over the Collider aperture is presented.

TUPPB002

Effect of Gold Nuclei Recombination in Electron Cooling System on Beam Lifetime in the NICA Collider

307

A.V. Philippov, O.S. Kozlov, A.B. Kuznetsov, A. Tuzikov
JINR/VBLHEP, Dubna, Moscow region, Russia
I.N. Meshkov
JINR/DLNP, Dubna, Moscow region, Russia

On the basis of experimental data the production of the ions Au⁷⁸⁺ and Au⁷⁷⁺ as a result of step-by-step radiative recombination of bare nuclei on free electrons in the NICA Collider electron cooling system is presented. The influence of Au⁷⁸⁺ ions on the luminosity lifetime is discussed. The optimum working cycle of the NICA Collider is described.

Paper	Title	Page
THAOR03	Status of the Design and Test of Superconducting Magnets for the NICA Project	149
	H.G. Khodzhibagiyan, P.G. Akishin, A.V. Bychkov, A. Donyagin, A.R. Galimov, O.S. Kozlov, G.L. Kuznetsov, I.N. Meshkov, V.A. Mikhaylov, E.V. Muravieva, P.I. Nikitaev, A.V. Shabunov, A.V. Smirnov, A.Y. Starikov, G.V. Trubnikov JINR, Dubna, Moscow Region, Russia
	NICA is a new accelerator complex being under design and construction at Joint Institute for Nuclear Research in Dubna. The actual design and the main characteristics of superconducting magnets for the NICA booster and the NICA collider are given. The magnets are based on a cold window frame iron yoke and a single-layered superconducting winding made from a hollow NbTi composite superconductor cable cooled with forced two-phase helium flow. The first results of cryogenic tests of the magnets for the NICA project are presented.
	Slides THAOR03 [0.884 MB]

WEZCH03	Status of the Nuclotron	117
	A.O. Sidorin, N.N. Agapov, A.V. Alfeev, V. Andreev, V. Batin, A.V. Butenko, D.E. Donets, E.D. Donets, A.V. Eliseev, V.V. Fimushkin, A.R. Galimov, E.V. Gorbachev, A. Govorov, E.V. Ivanov, V. Karpinsky, V.D. Kekelidze, H.G. Khodzhibagiyan, A. Kirichenko, A.G. Kobets, A.D. Kovalenko, O.S. Kozlov, N.I. Lebedev, I.N. Meshkov, V.A. Mikhailov, V. Monchinsky, S. Romanov, T.V. Rukoyatkina, N. Shurkhno, I. Slepnev, V. Slepnev, A.V. Smirnov, A. Sorin, G.V. Trubnikov, A. Tuzikov, B. Vasilishin, V. Volkov JINR, Dubna, Moscow Region, Russia O.I. Brovko, D.E. Donets, A.V. Philippov JINR/VBLHEP, Dubna, Moscow region, Russia
	One of the goals of present Nuclotron development is to test operational modes, diagnostic and beam control equipment required for R&D of the NICA collider elements. Main achievement in this direction are descussed. Results of the last runs of the Nuclotron operation are presented.
	Slides WEZCH03 [3.582 MB]

MOPPA017	Collider of the NICA Accelerator Complex: Optical Structure and Beam Dynamics	278
	O.S. Kozlov, A.V. Eliseev, H.G. Khodzhibagiyan, S.A. Kostromin, I.N. Meshkov, A.O. Sidorin, G.V. Trubnikov JINR, Dubna, Moscow Region, Russia
	Accelerator complex NICA, developed in VBLHEP JINR, must provide an ion-ion (Au79 +) and ion-proton collisions at energies of 1-4.5 GeV/u, as well as experiments on collisions of polarized proton-proton and deuteron-deuteron beams. The calculations of the optical properties of superconducting collider rings have been aimed to create appropriate conditions for the collisions of beams and obtaining the required luminosity parameters in the working range of energies. The collider characteristics and the beam dynamics have been worked out in most for ion-ion mode of the complex.

TUPPB003	Progress in NICA Booster Design	310
	A.S. Valkovich, O.S. Kozlov, I.N. Meshkov, V.A. Mikhaylov, A.O. Sidorin, G.V. Trubnikov JINR, Dubna, Moscow Region, Russia
	New collider facility NICA * is envisioned to be built at The Joint Institute of Nuclear Research. The work presented explores issues of correction system of the Booster Synchrotron. The optimal arrangement of Beam Position Monitors and Orbit Correctors along the ring was investigated in order to achieve decent quality of the orbit correction. The SVD properties of the orbit correction system are presented. Optimal arrangement of the sextupole lenses for the correction of chromaticity of the ring was obtained. The reduction of the dynamical aperture due to the presence of the sextupole lenses was minimized by means of proper choice of betatron phase advances between the lenses. * Design and construction of Nuclotron-based Ion Collider fAcility (NICA), Conceptual design report, Editors I.Meshkov, A.Sidorin, JINR, Dubna, 2008

MOBCH01	Storage, Acceleration and Short Bunched Beam Formation of 197Au+79 Ions in the NICA Collider	30
	A.V. Eliseev, A.V. Smirnov JINR, Dubna, Moscow Region, Russia T. Katayama GSI, Darmstadt, Germany E. Kenzhbulatov, G.Y. Kurkin, V.M. Petrov, V. Volkov BINP SB RAS, Novosibirsk, Russia O.S. Kozlov, A.O. Sidorin, G.V. Trubnikov JINR/VBLHEP, Dubna, Moscow region, Russia I.N. Meshkov JINR/DLNP, Dubna, Moscow region, Russia
	The regimes of high intensity beam of 197Au⁷⁹⁺ ions in NICA Collider is considered. The first stage – ion storage is proposed to be performed with Barrier Bucket technique at ion energy of 1–3 GeV/u. Experiments in collider mode in this energy range can be performed at injection energy. For experiments at higher, up to 4.5 GeV/u, energy ions are accelerated with the same BB method. Formation of bunched beam is fulfilled in two steps – first, at 24th harmonics and then, final formation, at 72th harmonics of RF system. The possibility of achievement of designed bunch parameters is shown.
	Slides MOBCH01 [0.807 MB]

MOPPA016	Dynamics of 197Au⁷⁸⁺ Ions Generated in Recombination with Cooling Electrons in the NICA Collider	275
	A.V. Eliseev JINR, Dubna, Moscow Region, Russia O.S. Kozlov, A.B. Kuznetsov, A.V. Philippov, A.O. Sidorin, A. Tuzikov JINR/VBLHEP, Dubna, Moscow region, Russia I.N. Meshkov JINR/DLNP, Dubna, Moscow region, Russia
	Ions 197Au⁷⁸⁺ are generated in recombination of original bare nuclei 197Au⁷⁹⁺ with cooling electrons in the electron cooler of the NICA Collider. The ions 197Au⁷⁸⁺ dynamics is considered in the in energy range 1–4.5 GeV/u when ion beam is bunched with RF voltage (collision mode operation of the NICA Collider). It is shown that some part of 197Au⁷⁸⁺ ions can be involved in synchrotron motion when other part suffers a chaotic motion regime. Most of these ions live in vacuum chamber until further recombination in to the state of 197Au⁷⁷⁺ and leave the Collider acceptance very fast. The evolution in time of ion distribution over the Collider aperture is presented.

TUPPB002	Effect of Gold Nuclei Recombination in Electron Cooling System on Beam Lifetime in the NICA Collider	307
	A.V. Philippov, O.S. Kozlov, A.B. Kuznetsov, A. Tuzikov JINR/VBLHEP, Dubna, Moscow region, Russia I.N. Meshkov JINR/DLNP, Dubna, Moscow region, Russia
	On the basis of experimental data the production of the ions Au⁷⁸⁺ and Au⁷⁷⁺ as a result of step-by-step radiative recombination of bare nuclei on free electrons in the NICA Collider electron cooling system is presented. The influence of Au⁷⁸⁺ ions on the luminosity lifetime is discussed. The optimum working cycle of the NICA Collider is described.