RUPAC2012 - List of Authors (Vobly, P.)

Paper

Title

Page

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]

WEPPC022

Stand for Precision Measurements of Magnetic Lenses Field Quality

495

A.S. Tsyganov, A.M. Batrakov, E.S. Kazantseva, A.V. Pavlenko, T.V. Rybitskaya, D. Shichkov, B.A. Skarbo, A.A. Starostenko, P. Vobly
BINP SB RAS, Novosibirsk, Russia

Strict requirements are imposed on the field quality of magnetic elements in today’s synchrotron radiation sources. For example, magnetic field harmonics of quadrupole lenses (currently manufactured in BINP) of main ring NSLS-II, should have no more than one or two ten-thousandths parts of main harmonic at the 75% of lens aperture. The stand is designed for precise measurement of the quadrupole lenses. The well-known technique with a rotating coil was used. The design and location of coils used in the measuring shaft and the method of commutation allow to compensate for both quadrupole and dipole components of the magnetic field. This, in turn, minimizes shaft beats effect and power supply noises effect on the accuracy of the results. During measurements, the shaft is rotated without stopping, and the data received from the gauge angle and digital integrators are processed "on the fly" strictly synchronous. The measurement procedure is performed in one and a half turn of the shaft and takes six seconds. The report describes mechanical design of the stand, principle of work, parameters of the equipment, and software. Results of measurements of the quadrupole lenses synchrotron source NSLS-II are given in conclusion. The results demonstrate possibilities of the stand.

Paper	Title	Page
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]

WEPPC022	Stand for Precision Measurements of Magnetic Lenses Field Quality	495
	A.S. Tsyganov, A.M. Batrakov, E.S. Kazantseva, A.V. Pavlenko, T.V. Rybitskaya, D. Shichkov, B.A. Skarbo, A.A. Starostenko, P. Vobly BINP SB RAS, Novosibirsk, Russia
	Strict requirements are imposed on the field quality of magnetic elements in today’s synchrotron radiation sources. For example, magnetic field harmonics of quadrupole lenses (currently manufactured in BINP) of main ring NSLS-II, should have no more than one or two ten-thousandths parts of main harmonic at the 75% of lens aperture. The stand is designed for precise measurement of the quadrupole lenses. The well-known technique with a rotating coil was used. The design and location of coils used in the measuring shaft and the method of commutation allow to compensate for both quadrupole and dipole components of the magnetic field. This, in turn, minimizes shaft beats effect and power supply noises effect on the accuracy of the results. During measurements, the shaft is rotated without stopping, and the data received from the gauge angle and digital integrators are processed "on the fly" strictly synchronous. The measurement procedure is performed in one and a half turn of the shaft and takes six seconds. The report describes mechanical design of the stand, principle of work, parameters of the equipment, and software. Results of measurements of the quadrupole lenses synchrotron source NSLS-II are given in conclusion. The results demonstrate possibilities of the stand.