IPAC2013 - List of Authors (Levichev, E.B.)

Paper	Title	Page
MOPEA053	Status of NSLS-II Booster	196
	S.M. Gurov, A.I. Erokhin, S.E. Karnaev, V.A. Kiselev, E.B. Levichev, A. Polyansky, A.M. Semenov, S.V. Shiyankov, S.V. Sinyatkin, V.V. Smaluk BINP SB RAS, Novosibirsk, Russia H.-C. Hseuh, T.V. Shaftan BNL, Upton, Long Island, New York, USA
	The National Synchrotron Light Source II is a third generation light source under construction at Brookhaven National Laboratory. The project includes a highly optimized 3 GeV electron storage ring, linac pre-injector and full-energy injector-synchrotron. Budker Institute of Nuclear Physics build booster for NSLS-II. The booster should accelerate the electron beam continuously and reliably from a minimum 170 MeV injection energy to a maximum energy of 3.15 GeV and average beam current of 20 mA. The booster shall be capable of multi-bunch and single bunch operation. Pre-comissioning test results of booster components and system are reviewed.

TUPME028	RF Orbit Separation for CPT-Test Experiment at VEPP-4M	1634
	V.E. Blinov, E.A. Bekhtenev, G.V. Karpov, V.A. Kiselev, S.A. Krutikhin, G.Y. Kurkin, E.B. Levichev, O.I. Meshkov, S.I. Mishnev, V.V. Neyfeld, S.A. Nikitin, I.B. Nikolaev, D.N. Shatilov, G.M. Tumaikin BINP SB RAS, Novosibirsk, Russia A.P. Chabanov, O.P. Gordeev, A.I. Mickailov Budker INP & NSU, Novosibirsk, Russia
	Funding: This work was supported by the Ministry of Education and Science of the Russian federation and the Russian Foundation for Basis Research (grant 11-02-01422-a) In a special program of experiments which is under development in a background regime at the VEPP-4M storage ring we set an aim to realize a potential possibility to make the CPT invariance test with the accuracy better than 10^-8. The test will be based on a precise comparison of the spin precession frequencies of simultaneously stored electrons and positrons. To exclude the presence of static electric fields increasing a systematic error we have developed and tested a special RF system driven at the half revolution frequency to subsitute for the electrostatic orbit separation system. The latter is needed for the electron and positron orbit separation at the parasitic interaction point where the beam-beam effects drastically cut the beam currents.

WEPEA049	Analysis of the Non-linear Fringe Effects of Large Aperture Triplets for the HL LHC Project	2615
	A.V. Bogomyagkov, E.B. Levichev, P.A. Piminov BINP SB RAS, Novosibirsk, Russia A. Chancé, B. Dalena, J. Payet CEA/IRFU, Gif-sur-Yvette, France R. De Maria, S.D. Fartoukh, M. Giovannozzi CERN, Geneva, Switzerland
	Funding: The HiLumi LHC Design Study is included in the HL-LHC project and is partly funded by the European Commission within the Framework Programme 7 Capacities Specific Programme, Grant Agreement 284404. The HL-LHC project relies on large aperture quadrupoles which are compatible with the very large beam sizes in the inner triplets resulting from the strong reduction of β^*. As a result the beam is much more sensitive to non-linear perturbations in this region, such as those induced by the fringe fields of the low-beta quadrupoles. The spatial extension of these fringe fields increases as well more or less linearly with the coil aperture, which is an additional motivation to analyse this aspect in detail in the framework of the High Luminosity LHC design study. This paper will quantify this effect both by direct analytical estimates using first order Hamiltonian perturbation theory, and via numerical studies thanks to the dedicated implementation of a fringe field symplectic integrator in SixTrack.

THPME029	Design of NSLS-II Booster Dipoles with Combined-function Magnetic Field	3570
	S.V. Sinyatkin, A.N. Dubrovin, S.M. Gurov, E.B. Levichev, Yu.A. Pupkov, E.R. Rouvinsky, A.V. Sukhanov BINP SB RAS, Novosibirsk, Russia
	Focusing and defocusing dipoles magnets of NSLS-II 3 GeV booster are designed, manufactured and measured in BINP, Russia. The magnets should provide the booster operation at energy from 170 MeV to 3.15 GeV with a 2 Hz frequency. Because of booster compactness the dipoles have quadrupole and sextupole components and should create high quality of field of ± 2·10^-4 in region of ± 2 cm. In this paper the design and results of 2D and 3D simulation are presented.

THPME030	Magnetic Measurement Results of the NSLS-II Booster Dipole Magnets	3573
	S.V. Sinyatkin, G.N. Baranov, A.M. Batrakov, P.N. Burdin, D.B. Burenkov, S.M. Gurov, V.A. Kiselev, V.V. Kobets, E.B. Levichev, I.N. Okunev, A. Polyansky, Yu.A. Pupkov, L.E. Serdakov, P. Vobly BINP SB RAS, Novosibirsk, Russia
	Focusing and defocusing dipole magnets for NSLS-II 3 GeV booster are designed, manufactured and measured in BINP, Russia. Magnetic measurements of 32 BD and 28 BF magnets are made by BINP. In this paper the results of magnetic measurements of dipoles magnets in the field area of 0.638 – 11.829 kGs for BD type and 0.260 - 4.829 kGs for BF type are given. Analysis and comparison with magnetic field simulation are made.

Paper

Title

Page

Status of NSLS-II Booster

196

S.M. Gurov, A.I. Erokhin, S.E. Karnaev, V.A. Kiselev, E.B. Levichev, A. Polyansky, A.M. Semenov, S.V. Shiyankov, S.V. Sinyatkin, V.V. Smaluk
BINP SB RAS, Novosibirsk, Russia
H.-C. Hseuh, T.V. Shaftan
BNL, Upton, Long Island, New York, USA

The National Synchrotron Light Source II is a third generation light source under construction at Brookhaven National Laboratory. The project includes a highly optimized 3 GeV electron storage ring, linac pre-injector and full-energy injector-synchrotron. Budker Institute of Nuclear Physics build booster for NSLS-II. The booster should accelerate the electron beam continuously and reliably from a minimum 170 MeV injection energy to a maximum energy of 3.15 GeV and average beam current of 20 mA. The booster shall be capable of multi-bunch and single bunch operation. Pre-comissioning test results of booster components and system are reviewed.

TUPME028

RF Orbit Separation for CPT-Test Experiment at VEPP-4M

1634

V.E. Blinov, E.A. Bekhtenev, G.V. Karpov, V.A. Kiselev, S.A. Krutikhin, G.Y. Kurkin, E.B. Levichev, O.I. Meshkov, S.I. Mishnev, V.V. Neyfeld, S.A. Nikitin, I.B. Nikolaev, D.N. Shatilov, G.M. Tumaikin
BINP SB RAS, Novosibirsk, Russia
A.P. Chabanov, O.P. Gordeev, A.I. Mickailov
Budker INP & NSU, Novosibirsk, Russia

Funding: This work was supported by the Ministry of Education and Science of the Russian federation and the Russian Foundation for Basis Research (grant 11-02-01422-a)
In a special program of experiments which is under development in a background regime at the VEPP-4M storage ring we set an aim to realize a potential possibility to make the CPT invariance test with the accuracy better than 10^-8. The test will be based on a precise comparison of the spin precession frequencies of simultaneously stored electrons and positrons. To exclude the presence of static electric fields increasing a systematic error we have developed and tested a special RF system driven at the half revolution frequency to subsitute for the electrostatic orbit separation system. The latter is needed for the electron and positron orbit separation at the parasitic interaction point where the beam-beam effects drastically cut the beam currents.

WEPEA049

Analysis of the Non-linear Fringe Effects of Large Aperture Triplets for the HL LHC Project

2615

A.V. Bogomyagkov, E.B. Levichev, P.A. Piminov
BINP SB RAS, Novosibirsk, Russia
A. Chancé, B. Dalena, J. Payet
CEA/IRFU, Gif-sur-Yvette, France
R. De Maria, S.D. Fartoukh, M. Giovannozzi
CERN, Geneva, Switzerland

Funding: The HiLumi LHC Design Study is included in the HL-LHC project and is partly funded by the European Commission within the Framework Programme 7 Capacities Specific Programme, Grant Agreement 284404.
The HL-LHC project relies on large aperture quadrupoles which are compatible with the very large beam sizes in the inner triplets resulting from the strong reduction of β^*. As a result the beam is much more sensitive to non-linear perturbations in this region, such as those induced by the fringe fields of the low-beta quadrupoles. The spatial extension of these fringe fields increases as well more or less linearly with the coil aperture, which is an additional motivation to analyse this aspect in detail in the framework of the High Luminosity LHC design study. This paper will quantify this effect both by direct analytical estimates using first order Hamiltonian perturbation theory, and via numerical studies thanks to the dedicated implementation of a fringe field symplectic integrator in SixTrack.

THPME029

Design of NSLS-II Booster Dipoles with Combined-function Magnetic Field

3570

S.V. Sinyatkin, A.N. Dubrovin, S.M. Gurov, E.B. Levichev, Yu.A. Pupkov, E.R. Rouvinsky, A.V. Sukhanov
BINP SB RAS, Novosibirsk, Russia

Focusing and defocusing dipoles magnets of NSLS-II 3 GeV booster are designed, manufactured and measured in BINP, Russia. The magnets should provide the booster operation at energy from 170 MeV to 3.15 GeV with a 2 Hz frequency. Because of booster compactness the dipoles have quadrupole and sextupole components and should create high quality of field of ± 2·10^-4 in region of ± 2 cm. In this paper the design and results of 2D and 3D simulation are presented.

THPME030

Magnetic Measurement Results of the NSLS-II Booster Dipole Magnets

3573

S.V. Sinyatkin, G.N. Baranov, A.M. Batrakov, P.N. Burdin, D.B. Burenkov, S.M. Gurov, V.A. Kiselev, V.V. Kobets, E.B. Levichev, I.N. Okunev, A. Polyansky, Yu.A. Pupkov, L.E. Serdakov, P. Vobly
BINP SB RAS, Novosibirsk, Russia

Focusing and defocusing dipole magnets for NSLS-II 3 GeV booster are designed, manufactured and measured in BINP, Russia. Magnetic measurements of 32 BD and 28 BF magnets are made by BINP. In this paper the results of magnetic measurements of dipoles magnets in the field area of 0.638 – 11.829 kGs for BD type and 0.260 - 4.829 kGs for BF type are given. Analysis and comparison with magnetic field simulation are made.