ERL2013 - List of Authors (Vinokurov, N.)

Paper

Title

Page

Commissioning Status and Further Development of the Novosibirsk Multiturn ERL

6

O.A. Shevchenko, V.S. Arbuzov, 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, S.A. Krutikhin, V.V. Kubarev, G.N. Kulipanov, E.A. Kuper, I.V. Kuptsov, G.Y. Kurkin, L.E. Medvedev, L.A. Mironenko, V.K. Ovchar, V.M. Petrov, A.M. Pilan, V.M. Popik, V.V. Repkov, T.V. Salikova, M.A. Scheglov, I.K. Sedlyarov, S.S. Serednyakov, A.N. Skrinsky, S.V. Tararyshkin, V.G. Tcheskidov, A.G. Tribendis, N. Vinokurov, M.G. Vlasenko, P. Vobly, V. Volkov
BINP SB RAS, Novosibirsk, Russia
N. Vinokurov
KAERI, Daejon, Republic of Korea

The Novosibirsk ERL is used as a source of electron beams for the powerful Free Electron Laser. It is based on the normal conducting RF structure which operates in CW mode. The third stage of this facility which is the first in the world four-turn ERL has been commissioned recently. More than 90% of electrons were transported to the beam dump, which allowed to increase the average beam current up to 5 mA. The obtained parameters are sufficient to get lasing at the third stage FEL which will be installed at fourth track in the nearest future. In this paper we report the commissioning status and talk about further development of the Novosibirsk ERL and FEL facility.

WG207

Longitudinal Stability of Multiturn ERL with Split Accelerating Structure

44

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

Some modern projects of the new generation light sources use the conception of multipass energy recovery linac with split (CEBAF-like) accelerating structures. One of the advantages of these light sources is the possibility to obtain a small longitudinal beam size. To help reduce it, the longitudinal dispersion should be non-zero in some arcs of the accelerator. However small deviations in voltages of the accelerating structures can be enhanced by induced fields from circulating bunches due to the dependence of the flight time on the energy spread and the high quality factor of the superconducting radio-frequency cavities. Therefore, instabilities related with interactions of the electron bunches and longitudinal modes of the cavities can develop in the installation. Stability conditions for the interactions with fundamental accelerating mode of the split accelerating system are discussed.

Slides WG207 [0.789 MB]

WG601

Novosibirsk ERL-based FEL as User Facility

G.N. Kulipanov, B.A. Knyazev, V.V. Kubarev, V.M. Popik, M.A. Scheglov, O.A. Shevchenko, N. Vinokurov
BINP SB RAS, Novosibirsk, Russia
B.A. Knyazev
NSU, Novosibirsk, Russia

Novosibirsk ERL operates for users with two FELs now. Terahertz FEL, installed on the first orbit, provides radiation in the wavelength range 120 - 240 micron with the average power up to .5 kW and peak power up to 1 MW. The far infrared FEL, installed on the second orbit, generates 40 - 80 micron radiation with the same power. Nitrogen-loaded beamlines transport radiation to user halls. Six stations are in use for biologists, chemists and physicists of several research institutions. Status and results of some user's research are described.

Slides WG601 [4.590 MB]

PS08

Beam Diagnostic Results of RF Gun for the Race-Track Microtron Recuperator of BINP SB RAS

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, A.G. Tribendis, 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 beam is obtained. This paper summarizes the beam diagnostic results of the cavity in this configuration.

PS12

The Control System of Novosibirsk Free Electron Laser

S.S. Serednyakov, N. Vinokurov
BINP SB RAS, Novosibirsk, Russia

Novosibirsk Free electron Laser (FEL) based on multi-turn energy recovery linac is the source of coherent radiation with ability of wavelength tuning. Whole FEL facility is a complex physics installation, controlled by large amount of equipment of different types. Therefore, for effective control and monitor of FEL operation state and its parameters, the particularized control system was developed. In this paper the architecture, hardware, software compound parts of this control system are considered. Also main abilities, characteristics of this system and examples of its usage are presented.
S.S.Serednyakov, N.A.Vinokurov, V.R.KOzak, S.V.Tararyshkin

PS13

Radiation Monitoring at Novosibirsk FEL

106

T.V. Salikova, M. Petrichenkov, A.V. Repkov, O.A. Shevchenko, N. Vinokurov
BINP SB RAS, Novosibirsk, Russia

The system of radiation diagnostics controls levels of radiation in the accelerator hall and in the adjacent rooms where works FEL personnel. The system provides radiation safety of personnel. The software performs data visualization and records the measured data into the database. The special ionization chambers installed in the accelerator hall. They keep track of the beam losses in the vacuum chamber, this information is used for correction of beam orbit. These sensors detect the induced radioactivity. Based on these data, we watch the degradation of the material of construction under the action of radiation.

WG207

Longitudinal Stability of Multiturn ERL with Split Accelerating Structure

44

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

Some modern projects of the new generation light sources use the conception of multipass energy recovery linac with split (CEBAF-like) accelerating structures. One of the advantages of these light sources is the possibility to obtain a small longitudinal beam size. To help reduce it, the longitudinal dispersion should be non-zero in some arcs of the accelerator. However small deviations in voltages of the accelerating structures can be enhanced by induced fields from circulating bunches due to the dependence of the flight time on the energy spread and the high quality factor of the superconducting radio-frequency cavities. Therefore, instabilities related with interactions of the electron bunches and longitudinal modes of the cavities can develop in the installation. Stability conditions for the interactions with fundamental accelerating mode of the split accelerating system are discussed.

Slides WG207 [0.789 MB]

Paper	Title	Page
PLT03	Commissioning Status and Further Development of the Novosibirsk Multiturn ERL	6
	O.A. Shevchenko, V.S. Arbuzov, 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, S.A. Krutikhin, V.V. Kubarev, G.N. Kulipanov, E.A. Kuper, I.V. Kuptsov, G.Y. Kurkin, L.E. Medvedev, L.A. Mironenko, V.K. Ovchar, V.M. Petrov, A.M. Pilan, V.M. Popik, V.V. Repkov, T.V. Salikova, M.A. Scheglov, I.K. Sedlyarov, S.S. Serednyakov, A.N. Skrinsky, S.V. Tararyshkin, V.G. Tcheskidov, A.G. Tribendis, N. Vinokurov, M.G. Vlasenko, P. Vobly, V. Volkov BINP SB RAS, Novosibirsk, Russia N. Vinokurov KAERI, Daejon, Republic of Korea
	The Novosibirsk ERL is used as a source of electron beams for the powerful Free Electron Laser. It is based on the normal conducting RF structure which operates in CW mode. The third stage of this facility which is the first in the world four-turn ERL has been commissioned recently. More than 90% of electrons were transported to the beam dump, which allowed to increase the average beam current up to 5 mA. The obtained parameters are sufficient to get lasing at the third stage FEL which will be installed at fourth track in the nearest future. In this paper we report the commissioning status and talk about further development of the Novosibirsk ERL and FEL facility.

WG207	Longitudinal Stability of Multiturn ERL with Split Accelerating Structure	44
	Ya.V. Getmanov, O.A. Shevchenko, N. Vinokurov BINP SB RAS, Novosibirsk, Russia N. Vinokurov KAERI, Daejon, Republic of Korea
	Some modern projects of the new generation light sources use the conception of multipass energy recovery linac with split (CEBAF-like) accelerating structures. One of the advantages of these light sources is the possibility to obtain a small longitudinal beam size. To help reduce it, the longitudinal dispersion should be non-zero in some arcs of the accelerator. However small deviations in voltages of the accelerating structures can be enhanced by induced fields from circulating bunches due to the dependence of the flight time on the energy spread and the high quality factor of the superconducting radio-frequency cavities. Therefore, instabilities related with interactions of the electron bunches and longitudinal modes of the cavities can develop in the installation. Stability conditions for the interactions with fundamental accelerating mode of the split accelerating system are discussed.
	Slides WG207 [0.789 MB]

WG601	Novosibirsk ERL-based FEL as User Facility
	G.N. Kulipanov, B.A. Knyazev, V.V. Kubarev, V.M. Popik, M.A. Scheglov, O.A. Shevchenko, N. Vinokurov BINP SB RAS, Novosibirsk, Russia B.A. Knyazev NSU, Novosibirsk, Russia
	Novosibirsk ERL operates for users with two FELs now. Terahertz FEL, installed on the first orbit, provides radiation in the wavelength range 120 - 240 micron with the average power up to .5 kW and peak power up to 1 MW. The far infrared FEL, installed on the second orbit, generates 40 - 80 micron radiation with the same power. Nitrogen-loaded beamlines transport radiation to user halls. Six stations are in use for biologists, chemists and physicists of several research institutions. Status and results of some user's research are described.
	Slides WG601 [4.590 MB]

PS08	Beam Diagnostic Results of RF Gun for the Race-Track Microtron Recuperator of BINP SB RAS
	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, A.G. Tribendis, 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 beam is obtained. This paper summarizes the beam diagnostic results of the cavity in this configuration.

PS12	The Control System of Novosibirsk Free Electron Laser
	S.S. Serednyakov, N. Vinokurov BINP SB RAS, Novosibirsk, Russia
	Novosibirsk Free electron Laser (FEL) based on multi-turn energy recovery linac is the source of coherent radiation with ability of wavelength tuning. Whole FEL facility is a complex physics installation, controlled by large amount of equipment of different types. Therefore, for effective control and monitor of FEL operation state and its parameters, the particularized control system was developed. In this paper the architecture, hardware, software compound parts of this control system are considered. Also main abilities, characteristics of this system and examples of its usage are presented. S.S.Serednyakov, N.A.Vinokurov, V.R.KOzak, S.V.Tararyshkin

PS13	Radiation Monitoring at Novosibirsk FEL	106
	T.V. Salikova, M. Petrichenkov, A.V. Repkov, O.A. Shevchenko, N. Vinokurov BINP SB RAS, Novosibirsk, Russia
	The system of radiation diagnostics controls levels of radiation in the accelerator hall and in the adjacent rooms where works FEL personnel. The system provides radiation safety of personnel. The software performs data visualization and records the measured data into the database. The special ionization chambers installed in the accelerator hall. They keep track of the beam losses in the vacuum chamber, this information is used for correction of beam orbit. These sensors detect the induced radioactivity. Based on these data, we watch the degradation of the material of construction under the action of radiation.

WG207	Longitudinal Stability of Multiturn ERL with Split Accelerating Structure	44
	Ya.V. Getmanov, O.A. Shevchenko, N. Vinokurov BINP SB RAS, Novosibirsk, Russia N. Vinokurov KAERI, Daejon, Republic of Korea
	Some modern projects of the new generation light sources use the conception of multipass energy recovery linac with split (CEBAF-like) accelerating structures. One of the advantages of these light sources is the possibility to obtain a small longitudinal beam size. To help reduce it, the longitudinal dispersion should be non-zero in some arcs of the accelerator. However small deviations in voltages of the accelerating structures can be enhanced by induced fields from circulating bunches due to the dependence of the flight time on the energy spread and the high quality factor of the superconducting radio-frequency cavities. Therefore, instabilities related with interactions of the electron bunches and longitudinal modes of the cavities can develop in the installation. Stability conditions for the interactions with fundamental accelerating mode of the split accelerating system are discussed.
	Slides WG207 [0.789 MB]