RUPAC2012 - List of Authors (Vinokurov, N.)

Paper

Title

Page

MARS: Fourth Generation X-Ray Light Source Based on Multiturn Energy-Recovery Linac

123

G.N. Kulipanov, Ya.V. Getmanov, O.A. Shevchenko, A.N. Skrinsky, N. Vinokurov
BINP SB RAS, Novosibirsk, Russia
V. Korchuganov
RRC, Moscow, Russia
M.V. Kovalchuk
NRC, Moscow, Russia

In the recent years, Russian government and scientific society have been coming gradually to an understanding the way of development science in Russia. Government have accepted a program of building six mega-science projects, and one of them can be a new 4-th generation x-ray light source based on accelerator-recuperator. Multiturn energy recovery linacs (ERL) looks very promising for making modern synchrotron radiation sources, being less expensive and more flexible. At this time only one multiturn ERL exists. This Novosibirsk ERL operates with two orbits and two free electron lasers based on one linac now. The conception of Multiturn Accelerator-recuperator Radiation Source (MARS) was proposed in 1997 by G.N. Kulipanov, A.N. Skrinsky and N.A. Vinokurov. The use of the ERL with two separated accelerating structures allows to exclude main disadvantages of scheme with one linac, such as the pass of electron bunches with different energies through the same magnetic arcs. The feasibility study for such ERL-based high brightness x-ray source is presented.

Slides THXCH01 [2.385 MB]

THXCH04

Budker INP Free Electron Laser Facility – Current Status and Future Prospects

136

O.A. Shevchenko, V.S. Arbuzov, K.N. Chernov, E.N. Dementyev, B.A. Dovzhenko, Ya.V. Getmanov, E.I. Gorniker, B.A. Knyazev, E.I. Kolobanov, A.A. Kondakov, V.R. Kozak, E.V. Kozyrev, V.V. Kubarev, G.N. Kulipanov, E.A. Kuper, I.V. Kuptsov, G.Y. Kurkin, L.E. Medvedev, L.A. Mironenko, V.K. Ovchar, B.Z. Persov, A.M. Pilan, V.M. Popik, V.V. Repkov, T.V. Salikova, M.A. Scheglov, I.K. Sedlyarov, G.V. Serdobintsev, S.S. Serednyakov, A.N. Skrinsky, S.V. Tararyshkin, V.G. Tcheskidov, N. Vinokurov, M.G. Vlasenko, P. Vobly, V. Volkov
BINP SB RAS, Novosibirsk, Russia

The free electron laser (FEL) facility at Budker INP is being developed for more than 15 years. It is based on the normal conducting CW energy recovery linac (ERL) with rather complicated magnetic system lattice. Up to now it is the only one in the world multiorbit ERL. It can operate in three different regimes providing electron beam for three different FELs. Its commissioning was naturally divided in three stages. The first stage ERL includes only one orbit placed in vertical plane. It serves as electron beam source for terahertz FEL which started working for users in 2003. Radiation of this FEL is used by several groups of scientists including biologists, chemists and physicists. Its high peak and average powers are utilized in experiments on material ablation and biological objects modification. The second stage ERL is composed of two orbits located in horizontal plane. The second stage FEL is installed on the bypass of the second orbit. The first lasing of this FEL was achieved in 2009. The last stage ERL will include four orbits. Its commissioning is in progress now. In this paper we report the latest results obtained from the operating FELs as well as our progress with the commissioning of the two remaining ERL beamlines. We also discuss possible options for the future upgrade.

Slides THXCH04 [5.360 MB]

TUPPB049

First Test Results of RF Gun for the Race-track Microtron Recuperator of BINP SB RAS

424

V. Volkov, V.S. Arbuzov, E.I. Gorniker, E.I. Kolobanov, S.A. Krutikhin, I.V. Kuptsov, G.Y. Kurkin, V.N. Osipov, V.M. Petrov, A.M. Pilan, M.A. Scheglov, I.K. Sedlyarov, N. Vinokurov
BINP SB RAS, Novosibirsk, Russia

A new electron source for the Race-Track Microtron Recuperator is being developed by BINP SB RAS. It will increase average beam current and brightness of synchrotron radiation. Instead of the static 300kV electron gun operated now we are developing RF gun with the same energy of electrons. This RF gun consists of RF cavity with a gridded thermo cathode mounted on the back wall. RF cavity is driven by a 60 kW generator with last stage equipped by GU101A tetrode tube. Operational frequency of the cavity is 90.2 MHz. It is equal to the second subharmonic of the Microtron RF system frequency. A set of low power electronics controls amplitude of the cavity voltage and its tuner. This system, including a diagnostics beam line, has been installed to serve as a test bench to test the RF cavity and for beam dynamics studies. In continuous regime the designed 300 kV voltages at the acceleration gap is obtained. This paper summarizes the first test results of the cavity in this configuration.

WEPPD004

Longitudinal Stability of ERL with Two Accelerating RF Structures

575

Ya.V. Getmanov, O.A. Shevchenko
BINP SB RAS, Novosibirsk, Russia
N. Vinokurov
KAERI, Daejon, Republic of Korea

Modern Energy Recovery Linac (ERL) projects use superconductive accelerating radio-frequency structures (RF). Their RF quality is typically very high. Therefore, the RF voltage induced by electron beam is also high. In ERL the RF voltage induced by the accelerating beam is almost cancelled by the RF voltage induced by the decelerating beam. But, a small variation of the RF voltage may cause the deviations of the accelerating phases. These deviations then may cause further voltage variation. Thus, the system may be unstable. The stability conditions for ERL with one accelerating structure are well known. The ERL with split RF structure was discussed recently. The stability conditions for such ERLs are discussed in this paper

Paper	Title	Page
THXCH01	MARS: Fourth Generation X-Ray Light Source Based on Multiturn Energy-Recovery Linac	123
	G.N. Kulipanov, Ya.V. Getmanov, O.A. Shevchenko, A.N. Skrinsky, N. Vinokurov BINP SB RAS, Novosibirsk, Russia V. Korchuganov RRC, Moscow, Russia M.V. Kovalchuk NRC, Moscow, Russia
	In the recent years, Russian government and scientific society have been coming gradually to an understanding the way of development science in Russia. Government have accepted a program of building six mega-science projects, and one of them can be a new 4-th generation x-ray light source based on accelerator-recuperator. Multiturn energy recovery linacs (ERL) looks very promising for making modern synchrotron radiation sources, being less expensive and more flexible. At this time only one multiturn ERL exists. This Novosibirsk ERL operates with two orbits and two free electron lasers based on one linac now. The conception of Multiturn Accelerator-recuperator Radiation Source (MARS) was proposed in 1997 by G.N. Kulipanov, A.N. Skrinsky and N.A. Vinokurov. The use of the ERL with two separated accelerating structures allows to exclude main disadvantages of scheme with one linac, such as the pass of electron bunches with different energies through the same magnetic arcs. The feasibility study for such ERL-based high brightness x-ray source is presented.
	Slides THXCH01 [2.385 MB]

THXCH04	Budker INP Free Electron Laser Facility – Current Status and Future Prospects	136
	O.A. Shevchenko, V.S. Arbuzov, K.N. Chernov, E.N. Dementyev, B.A. Dovzhenko, Ya.V. Getmanov, E.I. Gorniker, B.A. Knyazev, E.I. Kolobanov, A.A. Kondakov, V.R. Kozak, E.V. Kozyrev, V.V. Kubarev, G.N. Kulipanov, E.A. Kuper, I.V. Kuptsov, G.Y. Kurkin, L.E. Medvedev, L.A. Mironenko, V.K. Ovchar, B.Z. Persov, A.M. Pilan, V.M. Popik, V.V. Repkov, T.V. Salikova, M.A. Scheglov, I.K. Sedlyarov, G.V. Serdobintsev, S.S. Serednyakov, A.N. Skrinsky, S.V. Tararyshkin, V.G. Tcheskidov, N. Vinokurov, M.G. Vlasenko, P. Vobly, V. Volkov BINP SB RAS, Novosibirsk, Russia
	The free electron laser (FEL) facility at Budker INP is being developed for more than 15 years. It is based on the normal conducting CW energy recovery linac (ERL) with rather complicated magnetic system lattice. Up to now it is the only one in the world multiorbit ERL. It can operate in three different regimes providing electron beam for three different FELs. Its commissioning was naturally divided in three stages. The first stage ERL includes only one orbit placed in vertical plane. It serves as electron beam source for terahertz FEL which started working for users in 2003. Radiation of this FEL is used by several groups of scientists including biologists, chemists and physicists. Its high peak and average powers are utilized in experiments on material ablation and biological objects modification. The second stage ERL is composed of two orbits located in horizontal plane. The second stage FEL is installed on the bypass of the second orbit. The first lasing of this FEL was achieved in 2009. The last stage ERL will include four orbits. Its commissioning is in progress now. In this paper we report the latest results obtained from the operating FELs as well as our progress with the commissioning of the two remaining ERL beamlines. We also discuss possible options for the future upgrade.
	Slides THXCH04 [5.360 MB]

TUPPB049	First Test Results of RF Gun for the Race-track Microtron Recuperator of BINP SB RAS	424
	V. Volkov, V.S. Arbuzov, E.I. Gorniker, E.I. Kolobanov, S.A. Krutikhin, I.V. Kuptsov, G.Y. Kurkin, V.N. Osipov, V.M. Petrov, A.M. Pilan, M.A. Scheglov, I.K. Sedlyarov, N. Vinokurov BINP SB RAS, Novosibirsk, Russia
	A new electron source for the Race-Track Microtron Recuperator is being developed by BINP SB RAS. It will increase average beam current and brightness of synchrotron radiation. Instead of the static 300kV electron gun operated now we are developing RF gun with the same energy of electrons. This RF gun consists of RF cavity with a gridded thermo cathode mounted on the back wall. RF cavity is driven by a 60 kW generator with last stage equipped by GU101A tetrode tube. Operational frequency of the cavity is 90.2 MHz. It is equal to the second subharmonic of the Microtron RF system frequency. A set of low power electronics controls amplitude of the cavity voltage and its tuner. This system, including a diagnostics beam line, has been installed to serve as a test bench to test the RF cavity and for beam dynamics studies. In continuous regime the designed 300 kV voltages at the acceleration gap is obtained. This paper summarizes the first test results of the cavity in this configuration.

WEPPD004	Longitudinal Stability of ERL with Two Accelerating RF Structures	575
	Ya.V. Getmanov, O.A. Shevchenko BINP SB RAS, Novosibirsk, Russia N. Vinokurov KAERI, Daejon, Republic of Korea
	Modern Energy Recovery Linac (ERL) projects use superconductive accelerating radio-frequency structures (RF). Their RF quality is typically very high. Therefore, the RF voltage induced by electron beam is also high. In ERL the RF voltage induced by the accelerating beam is almost cancelled by the RF voltage induced by the decelerating beam. But, a small variation of the RF voltage may cause the deviations of the accelerating phases. These deviations then may cause further voltage variation. Thus, the system may be unstable. The stability conditions for ERL with one accelerating structure are well known. The ERL with split RF structure was discussed recently. The stability conditions for such ERLs are discussed in this paper