RUPAC2012 - List of Keywords (undulator)

Paper	Title	Other Keywords	Page
THXCH01	MARS: Fourth Generation X-Ray Light Source Based on Multiturn Energy-Recovery Linac	radiation, electron, brightness, photon	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]

THXCH03	Current FEL Physics Research at SLAC	FEL, laser, electron, radiation	131
	G.V. Stupakov SLAC, Menlo Park, California, USA
	Funding: Work is supported by Department of Energy contract DE-AC02-76SF00515 SLAC is a home of the first hard x-ray free electron laser - the Linac Coherent Light Source, or LCLS, based on Self-Amplified Stimulated Emission (SASE) principle. Being a user facility, LCLS, as well as some other installations at SLAC, are, at the same time, test beds of research aimed to improving fundamental characteristics of free electron lasers. In this presentation I will review results of some of these studies. They include studies of the FEL seeding based on the Echo-Enabled Harmonic Generation (EEGH) carried out at the NLCTA facility at SLAC, hard x-ray self seeding at LCLS, noise suppression experiments, and research aimed to achieve terawatt-scale power in FELs. A brief review of the plans for LCLS upgrade will be given.
	Slides THXCH03 [10.105 MB]

THXCH04	Budker INP Free Electron Laser Facility – Current Status and Future Prospects	FEL, electron, radiation, linac	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]

TUPPB012	Search of the Motion Integral at Linac with RF Focusing	linac, focusing, dynamic-aperture, ion	337
	V.S. Dyubkov, S.M. Polozov MEPhI, Moscow, Russia
	The problem of the effective low-energy linac design is of interest to many fields of science, industry and medicine. It is well known that nonsynchronous harmonics of RF field (RF undulator) are focusing the particles. Analytical beam dynamics investigation can be carried out by means of the averaging method over the rapid oscillations period (the so-called smooth approximation) in the oscillating fields. Motion equation is presented in the form of the Hamilton's equations. Motion integrals are found by means of Poincare mapping.

WEPPD003	Diagnostic Technique with Femtosecond Resolution Applied for FEL Electron Bunches	radiation, electron, photon, FEL	572
	E. Syresin, A.Yu. Grebentsov, R.S. Makarov, N.A. Morozov, M.V. Yurkov JINR, Dubna, Moscow Region, Russia O.I. Brovko, A.V. Shabunov JINR/VBLHEP, Moscow, Russia
	Diagnostic technique applied for FEL ultrashort electron bunches is developed at JINR-DESY collaboration within the framework of the FLASH and XFEL projects. Photon diagnostics developed at JINR-DESY collaboration for ultrashort electron bunches are based on calorimetric measurements and detection of undulator radiation. The infrared undulator constructed at JINR and installed at FLASH is used for longitudinal bunch shape measurements and for two-color lasing provided by the FIR and VUV undulators. The pump probe experiments with VUV and FIR undulators provide the bunch profile measurements with resolution of several femtosecond. The MCP based radiation detectors are effectively used at FLASH for VUV pulse energy measurements. The new three MCP detectors operated in X-ray range are under development now in JINR for SASE1-SASE 3 XFEL.

WEPPD020	Helical 1Tx1cm Pulsed Insertion Devices for Production of Intense Polarized X- & Gamma-rays	radiation, collider, linear-collider, polarization	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.

Paper

Title

Other Keywords

Page

THXCH01

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

radiation, electron, brightness, photon

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]

THXCH03

Current FEL Physics Research at SLAC

FEL, laser, electron, radiation

131

G.V. Stupakov
SLAC, Menlo Park, California, USA

Funding: Work is supported by Department of Energy contract DE-AC02-76SF00515
SLAC is a home of the first hard x-ray free electron laser - the Linac Coherent Light Source, or LCLS, based on Self-Amplified Stimulated Emission (SASE) principle. Being a user facility, LCLS, as well as some other installations at SLAC, are, at the same time, test beds of research aimed to improving fundamental characteristics of free electron lasers. In this presentation I will review results of some of these studies. They include studies of the FEL seeding based on the Echo-Enabled Harmonic Generation (EEGH) carried out at the NLCTA facility at SLAC, hard x-ray self seeding at LCLS, noise suppression experiments, and research aimed to achieve terawatt-scale power in FELs. A brief review of the plans for LCLS upgrade will be given.

Slides THXCH03 [10.105 MB]

THXCH04

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

FEL, electron, radiation, linac

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]

TUPPB012

Search of the Motion Integral at Linac with RF Focusing

linac, focusing, dynamic-aperture, ion

337

V.S. Dyubkov, S.M. Polozov
MEPhI, Moscow, Russia

The problem of the effective low-energy linac design is of interest to many fields of science, industry and medicine. It is well known that nonsynchronous harmonics of RF field (RF undulator) are focusing the particles. Analytical beam dynamics investigation can be carried out by means of the averaging method over the rapid oscillations period (the so-called smooth approximation) in the oscillating fields. Motion equation is presented in the form of the Hamilton's equations. Motion integrals are found by means of Poincare mapping.

WEPPD003

Diagnostic Technique with Femtosecond Resolution Applied for FEL Electron Bunches

radiation, electron, photon, FEL

572

E. Syresin, A.Yu. Grebentsov, R.S. Makarov, N.A. Morozov, M.V. Yurkov
JINR, Dubna, Moscow Region, Russia
O.I. Brovko, A.V. Shabunov
JINR/VBLHEP, Moscow, Russia

Diagnostic technique applied for FEL ultrashort electron bunches is developed at JINR-DESY collaboration within the framework of the FLASH and XFEL projects. Photon diagnostics developed at JINR-DESY collaboration for ultrashort electron bunches are based on calorimetric measurements and detection of undulator radiation. The infrared undulator constructed at JINR and installed at FLASH is used for longitudinal bunch shape measurements and for two-color lasing provided by the FIR and VUV undulators. The pump probe experiments with VUV and FIR undulators provide the bunch profile measurements with resolution of several femtosecond. The MCP based radiation detectors are effectively used at FLASH for VUV pulse energy measurements. The new three MCP detectors operated in X-ray range are under development now in JINR for SASE1-SASE 3 XFEL.

WEPPD020

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

radiation, collider, linear-collider, polarization

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.