RUPAC2012 - List of Authors (Smirnov, A.V.)

Paper

Title

Page

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]

TUYCH01

Application of the Beam Cooling Methods at the NICA Project

G.V. Trubnikov, I.N. Meshkov, A.O. Sidorin, A.V. Smirnov, S. Yakovenko
JINR, Dubna, Moscow Region, Russia
T. Katayama
GSI, Darmstadt, Germany

The Nuclotron-based Ion Collider fAcility (NICA) is a new accelerator complex being constructed at JINR aimed to provide experiments with colliding heavy ions up to Au for experimental study of hot and dense strongly interacting baryonic matter and search for possible signs of the mixed phase and critical endpoint in the centre-of-mass energy range sq.root(SNN) = 4-11 GeV. This facility includes new 3 MeV/u linac, 600 MeV/u booster synchrotron (Booster), upgraded superconducting (SC) synchrotron Nuclotron (4,5 GeV/u maximal kinetic energy for ions with Z/A = 1/3) and collider consisting of two vertically separated SC rings, which provide average luminosity of the order of 10e27cm²s¹ at high energies. Beam cooling systems are proposed for elements of the NICA project. The Booster synchrotron will be equipped with an electron cooling system. Two beam cooling systems – stochastic and electron will be used in the collider rings. Parameters of the cooling systems, proposed scenario of operation and peculiarities of their design intended to achieve required beam parameters are presented in this report.

Slides TUYCH01 [3.574 MB]

TUACH01

Status of the High Voltage Electron Cooler Project for NICA Collider

58

S. Yakovenko, E.V. Ahmanova, A. Ivanov, A.G. Kobets, I.N. Meshkov, A.Yu. Rudakov, A.V. Smirnov, N.D. Topilin
JINR, Dubna, Moscow Region, Russia
A.V. Shabunov
JINR/VBLHEP, Moscow, Russia

The electron cooling system at electron energy up to 2.5 MeV for the NICA collider is under design at JINR. The magnetic system and system of transfer of capacity on high potential is developed. The high voltage generator prototype on 250 kV was tested. The technical design of the electron cooling system was started.

Slides TUACH01 [1.035 MB]

TUACH02

Long Term Beam Dynamics Simulation with the BETACOOL Code

60

A.V. Smirnov, A.O. Sidorin
JINR, Dubna, Moscow Region, Russia

General goal of the BETACOOL program is to simulate long term processes (in comparison with the ion revolution period) in the ion storage ring leading to variation of the ion distribution function in 6 dimensional phase space. The ion beam motion inside a storage ring is supposed to be stable and it is treated in linear approximation. Results of the numerical simulation of the beam dynamics for new projects FAIR (GSI, Germany) and NICA (JINR, Russia) are presented.

Slides TUACH02 [1.004 MB]

TUXCH03

Approach to the Low Temperature State Oriented for Crystalline Beam

48

A. Noda, M. Nakao, H. Souda, H. Tongu
Kyoto ICR, Uji, Kyoto, Japan
M. Grieser
MPI-K, Heidelberg, Germany
Z.Q. He
TUB, Beijing, People's Republic of China
K. Jimbo
Kyoto University, Institute for Advanced Energy, Kyoto, Japan
I.N. Meshkov, A.V. Smirnov
JINR, Dubna, Moscow Region, Russia
K. Noda, T. Shirai
NIRS, Chiba-shi, Japan
H. Okamoto, K. Osaki
HU/AdSM, Higashi-Hiroshima, Japan
Y. Yuri
JAEA/TARRI, Gunma-ken, Japan

Funding: Work supported by Advanced Compact Accelerator Development of MEXT. It is also supported by GCOE project at Kyoto University, "The next generation of Physics-Spun from Universality and Emergence".
With the use of S-LSR, an ion storage and cooler ring at ICR, Kyoto University, approach to attain the low temperature beam has been continued in these several years. Based on the realization of one dimensional ordered state of 7 MeV proton beam by an electron cooling*, effort to reach lower temperature by laser cooling with much stronger cooling force, has been continued for 40 keV Mg ion beam. With the use of synchro-betatron resonance coupling(SBRC), longitudinal cooling effect can be well expected to be transferred to the transverse directions** and we have experimentally demonstrated of such effect***. The transverse cooling efficiency is, however, not so good deteriorated by intra-beam scattering (IBS) effect for the beam intensities higher than 10⁷. Although the reduction of the beam intensity keeping enough S/N ratio for observation of the beam, is not so easy, we are now challenging "controlled scraping", which controls the horizontal scraper position according to the extent of the indirect horizontal laser cooling by SBRC. In the present paper, our research stream from electron cooling to multi-dimensional laser cooling is surveyed at first and then challenge toward the crystalline beam is to be presented.
*: T. Shirai et al., Phys. Rev. Lett., Vol.98 (2007)204801.
**:H. Okamoto, A.M. Sessler and D. Möhl, Phys. Rev. Lett. Vol.72 (1994) 3977.
***: M. Nakao et al., to be submitted to Phys. Rev. ST-AB.

Slides TUXCH03 [8.557 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]

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]

WEPPD042

Vacuum Automatic Control System (ACS) for NICA Project

635

R.V. Pivin, A.R. Galimov, H.G. Khodzhibagiyan, A.V. Smirnov
JINR, Dubna, Moscow Region, Russia
A.M. Bazanov, A.V. Butenko, A. Nesterov, G.V. Trubnikov
JINR/VBLHEP, Dubna, Moscow region, Russia
P. Hedbavny
Pfeiffer Vacuum GmbH, Asslar, Germany

Development of the automatic control vacuum system (ACVS) for NICA project was beginning. The first step of this work was Nuclotron vacuum system modernization. It were installed new vacuum pumps and gauges with RS-232, RS-485 and ProfiBus interfaces. Devices were combined to the net with central controller at Linac control room. The result of the modernization was creation of remote control, monitoring and automatic protective system. Next step of ACVS creation will be Linac vacuum system automatization. Experience of the Nuclotron vacuum system modernization will be applied for NICA ACVS development.

TUPPB052

A ps-Pulsed E-gun Advanced to a T-wave Source of MW-level Peak Power

430

A.V. Smirnov
RadiaBeam, Santa Monica, USA

Funding: Department of Energy
A coherent source based on a electron gun is considered to deliver high instantaneous power comparable to that available from just a few other non-FEL and most FEL sources at mm-submillimeter wavelengths. A DC or RF E-gun is integrated with a robust, compact, efficient, dismountable radiator inside the vacuum envelope. Wakefield radiator is driven by a low-energy photoinjector operated in a custom mode combining strong over-focusing, robust slow-wave structure, and pulse sub-ps photoinjectior employing on-cathode beam modulation with conventional optical multiplexing. Single pulse mode operation is enhanced with filed compression effect at high group velocity. The performance is analyzed analytically and numerically supported by experimental data on beam overfocusing. Radiation outcoupling is analyzed as well.

WEPPD020

Helical 1Tx1cm Pulsed Insertion Devices for Production of Intense Polarized X- & Gamma-rays

596

A.V. Smirnov
RadiaBeam, Santa Monica, USA

Two types of high-field, pulse undulators are revisited as non-coherent or partially coherent sources capable of undulator factor approaching unity at substantial gap-to-period ratios exceeding 0.4 that cannot be achieved with conventional technology. One type is a microwave square-guide, cross-polarized undulator system fed by high-power wake-fields extracted with CLIC type scheme adapted for that 2-beam undulator. Another novel ID is represented here by a bifilar transmission line energized by a high voltage, ~ns-pulse, solid-state generator. These undulators fit well radiation facilities and future linear colliders based on high-gradient microwave linac technology.

WEPPD021

HTS Wiggler Concept for a Damping Ring

599

A.V. Smirnov
RadiaBeam, Santa Monica, USA
A.A. Mikhailichenko
CLASSE, Ithaca, New York, USA

A new design for the proposed ILC damping ring (DR) is based on 2G HTS cabling technology applied to the DC windings with yoke and mu-metal-shimmed pole to achieve ~2 T high-quality field within a 86 mm gap and 32-40 cm period. Low levels of current densities (~90-100 A/mm²) provide a robust, reliable operation of the wiggler at higher heat loads, up to LN₂ temperatures with long leads, enhanced flexibility for cryostats and infrastructure in harsh radiation environment, and reduced failure rate compared to the baseline SC ILC DR wiggler design at very competitive cost.

Paper	Title	Page
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]

TUYCH01	Application of the Beam Cooling Methods at the NICA Project
	G.V. Trubnikov, I.N. Meshkov, A.O. Sidorin, A.V. Smirnov, S. Yakovenko JINR, Dubna, Moscow Region, Russia T. Katayama GSI, Darmstadt, Germany
	The Nuclotron-based Ion Collider fAcility (NICA) is a new accelerator complex being constructed at JINR aimed to provide experiments with colliding heavy ions up to Au for experimental study of hot and dense strongly interacting baryonic matter and search for possible signs of the mixed phase and critical endpoint in the centre-of-mass energy range sq.root(SNN) = 4-11 GeV. This facility includes new 3 MeV/u linac, 600 MeV/u booster synchrotron (Booster), upgraded superconducting (SC) synchrotron Nuclotron (4,5 GeV/u maximal kinetic energy for ions with Z/A = 1/3) and collider consisting of two vertically separated SC rings, which provide average luminosity of the order of 10e27cm²s¹ at high energies. Beam cooling systems are proposed for elements of the NICA project. The Booster synchrotron will be equipped with an electron cooling system. Two beam cooling systems – stochastic and electron will be used in the collider rings. Parameters of the cooling systems, proposed scenario of operation and peculiarities of their design intended to achieve required beam parameters are presented in this report.
	Slides TUYCH01 [3.574 MB]

TUACH01	Status of the High Voltage Electron Cooler Project for NICA Collider	58
	S. Yakovenko, E.V. Ahmanova, A. Ivanov, A.G. Kobets, I.N. Meshkov, A.Yu. Rudakov, A.V. Smirnov, N.D. Topilin JINR, Dubna, Moscow Region, Russia A.V. Shabunov JINR/VBLHEP, Moscow, Russia
	The electron cooling system at electron energy up to 2.5 MeV for the NICA collider is under design at JINR. The magnetic system and system of transfer of capacity on high potential is developed. The high voltage generator prototype on 250 kV was tested. The technical design of the electron cooling system was started.
	Slides TUACH01 [1.035 MB]

TUACH02	Long Term Beam Dynamics Simulation with the BETACOOL Code	60
	A.V. Smirnov, A.O. Sidorin JINR, Dubna, Moscow Region, Russia
	General goal of the BETACOOL program is to simulate long term processes (in comparison with the ion revolution period) in the ion storage ring leading to variation of the ion distribution function in 6 dimensional phase space. The ion beam motion inside a storage ring is supposed to be stable and it is treated in linear approximation. Results of the numerical simulation of the beam dynamics for new projects FAIR (GSI, Germany) and NICA (JINR, Russia) are presented.
	Slides TUACH02 [1.004 MB]

TUXCH03	Approach to the Low Temperature State Oriented for Crystalline Beam	48
	A. Noda, M. Nakao, H. Souda, H. Tongu Kyoto ICR, Uji, Kyoto, Japan M. Grieser MPI-K, Heidelberg, Germany Z.Q. He TUB, Beijing, People's Republic of China K. Jimbo Kyoto University, Institute for Advanced Energy, Kyoto, Japan I.N. Meshkov, A.V. Smirnov JINR, Dubna, Moscow Region, Russia K. Noda, T. Shirai NIRS, Chiba-shi, Japan H. Okamoto, K. Osaki HU/AdSM, Higashi-Hiroshima, Japan Y. Yuri JAEA/TARRI, Gunma-ken, Japan
	Funding: Work supported by Advanced Compact Accelerator Development of MEXT. It is also supported by GCOE project at Kyoto University, "The next generation of Physics-Spun from Universality and Emergence". With the use of S-LSR, an ion storage and cooler ring at ICR, Kyoto University, approach to attain the low temperature beam has been continued in these several years. Based on the realization of one dimensional ordered state of 7 MeV proton beam by an electron cooling, effort to reach lower temperature by laser cooling with much stronger cooling force, has been continued for 40 keV Mg ion beam. With the use of synchro-betatron resonance coupling(SBRC), longitudinal cooling effect can be well expected to be transferred to the transverse directions* and we have experimentally demonstrated of such effect**. The transverse cooling efficiency is, however, not so good deteriorated by intra-beam scattering (IBS) effect for the beam intensities higher than 10⁷. Although the reduction of the beam intensity keeping enough S/N ratio for observation of the beam, is not so easy, we are now challenging "controlled scraping", which controls the horizontal scraper position according to the extent of the indirect horizontal laser cooling by SBRC. In the present paper, our research stream from electron cooling to multi-dimensional laser cooling is surveyed at first and then challenge toward the crystalline beam is to be presented. : T. Shirai et al., Phys. Rev. Lett., Vol.98 (2007)204801. :H. Okamoto, A.M. Sessler and D. Möhl, Phys. Rev. Lett. Vol.72 (1994) 3977. *: M. Nakao et al., to be submitted to Phys. Rev. ST-AB.
	Slides TUXCH03 [8.557 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]

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]

WEPPD042	Vacuum Automatic Control System (ACS) for NICA Project	635
	R.V. Pivin, A.R. Galimov, H.G. Khodzhibagiyan, A.V. Smirnov JINR, Dubna, Moscow Region, Russia A.M. Bazanov, A.V. Butenko, A. Nesterov, G.V. Trubnikov JINR/VBLHEP, Dubna, Moscow region, Russia P. Hedbavny Pfeiffer Vacuum GmbH, Asslar, Germany
	Development of the automatic control vacuum system (ACVS) for NICA project was beginning. The first step of this work was Nuclotron vacuum system modernization. It were installed new vacuum pumps and gauges with RS-232, RS-485 and ProfiBus interfaces. Devices were combined to the net with central controller at Linac control room. The result of the modernization was creation of remote control, monitoring and automatic protective system. Next step of ACVS creation will be Linac vacuum system automatization. Experience of the Nuclotron vacuum system modernization will be applied for NICA ACVS development.

TUPPB052	A ps-Pulsed E-gun Advanced to a T-wave Source of MW-level Peak Power	430
	A.V. Smirnov RadiaBeam, Santa Monica, USA
	Funding: Department of Energy A coherent source based on a electron gun is considered to deliver high instantaneous power comparable to that available from just a few other non-FEL and most FEL sources at mm-submillimeter wavelengths. A DC or RF E-gun is integrated with a robust, compact, efficient, dismountable radiator inside the vacuum envelope. Wakefield radiator is driven by a low-energy photoinjector operated in a custom mode combining strong over-focusing, robust slow-wave structure, and pulse sub-ps photoinjectior employing on-cathode beam modulation with conventional optical multiplexing. Single pulse mode operation is enhanced with filed compression effect at high group velocity. The performance is analyzed analytically and numerically supported by experimental data on beam overfocusing. Radiation outcoupling is analyzed as well.

WEPPD020	Helical 1Tx1cm Pulsed Insertion Devices for Production of Intense Polarized X- & Gamma-rays	596
	A.V. Smirnov RadiaBeam, Santa Monica, USA
	Two types of high-field, pulse undulators are revisited as non-coherent or partially coherent sources capable of undulator factor approaching unity at substantial gap-to-period ratios exceeding 0.4 that cannot be achieved with conventional technology. One type is a microwave square-guide, cross-polarized undulator system fed by high-power wake-fields extracted with CLIC type scheme adapted for that 2-beam undulator. Another novel ID is represented here by a bifilar transmission line energized by a high voltage, ~ns-pulse, solid-state generator. These undulators fit well radiation facilities and future linear colliders based on high-gradient microwave linac technology.

WEPPD021	HTS Wiggler Concept for a Damping Ring	599
	A.V. Smirnov RadiaBeam, Santa Monica, USA A.A. Mikhailichenko CLASSE, Ithaca, New York, USA
	A new design for the proposed ILC damping ring (DR) is based on 2G HTS cabling technology applied to the DC windings with yoke and mu-metal-shimmed pole to achieve ~2 T high-quality field within a 86 mm gap and 32-40 cm period. Low levels of current densities (~90-100 A/mm²) provide a robust, reliable operation of the wiggler at higher heat loads, up to LN₂ temperatures with long leads, enhanced flexibility for cryostats and infrastructure in harsh radiation environment, and reduced failure rate compared to the baseline SC ILC DR wiggler design at very competitive cost.