V.E. Panchenko

Stabilization system of synchrotron radiation beams at the VEPP-3 storage ring

Abstract The system for position stabilization of synchrotron radiation (SR) beams at the VEPP-3 storage ring (Novosibirsk, Russia) is described. The system is based on measuring, at the same place, the positions of two SR beams emitted from different points of electron orbit in the storage ring. The results of the system testing and estimations of residual orbit instability under the system control are presented, as well.

Synchrotron radiation and free electron laser activities at SSRC

Abstract In the last decade the Siberian SR Centre has implemented a wide program of SR and FEL research in cooperation with various research centres and institutions in Russia and abroad. The report illustrates this program, including joint experiments with the use of SR and FEL sources available at the Budker Institute of Nuclear Physics (INP), the implementation of new joint projects in Novosibirsk and at other centres, as well as the delivery of equipment designed and fabricated at the Budker INP or in collaboration with the Russian industry. Some technical information about the SR storage rings, wigglers, undulators and free electron lasers which are being constructed, used or developed at Budker INP is given as well.

Synchrotron radiation and free electron laser activities in Novosibirsk

Abstract In the last decade the Siberian SR Centre has implemented a wide program of SR and FEL research in cooperation with various research centres and institutions in Russia and abroad. The report illustrates this program, including joint experiments with the use of SR and FEL sources available at the Budker Institute of Nuclear Physics, the implementation of new joint projects in Novosibirsk and in the other centres, as well as the delivery of equipment to foreign countries, designed and manufactured at the Budker INP or in collaboration with Russian industry. Some technical information on the storage rings-SR sources, wigglers, undulators and free electron lasers which are being constructed, used or developed at the Budker INP, is given.

A system of fast one-dimensional X-ray cinema with direct registration and accumulation of images by a matrix CCD

Abstract A recording system on the basis of a matrix CCD and the first results of its testing are described. The system is intended for fast registration (from 10 up to 100 μs per image) of the limited (100 through 500) series of one-dimensional X-ray images. Here the CCD is used for direct registration of X-rays as well as for the accumulation and short-time storage of one-dimensional bulk images. After the registration is complete, the accumulated images are transformed into a digitized electric signal, which is read out by a computer. Our consideration also deals with the system speed main restrictions, which are due to both the electric parameters of a matrix CCD and the charge-diffusion effects in the substratum. Besides, the methods for diminishing these restrictions are discussed.

Erratum to: “Status of the Siberian Synchrotron Radiation Center”: [Nucl. Instr. and Meth. A 543 (2005) 1]

Erratum to: ‘‘Status of the Siberian Synchrotron Radiation Center’’ [Nucl. Instr. and Meth. A 543 (2005) 1] A.I. Ancharov, V.B. Baryshev, V.A. Chernov, A.N. Gentselev, B.G. Goldenberg, D.I. Kochubei, V.N. Korchuganov, G.N. Kulipanov , M.V. Kuzin, E.B. Levichev, N.A. Mezentsev, S.I. Mishnev, A.D. Nikolenko, V.E. Panchenko, V.F. Pindyurin, M.A. Sheromov, B.P. Tolochko, M.R. Sharafutdinov, A.N. Shmakov, N.A. Vinokurov, P.D. Vobly, K.V. Zolotarev Institute of Solid State Chemistry and Mechanochemistry of SB RAS, 630090 Novosibirsk, Russian Federation Budker Institute of Nuclear Physics of SB RAS, 630090 Novosibirsk, Russian Federation Boreskov Institute of Catalysis SB RAS, 630090 Novosibirsk, Russian Federation

SR front ends of VEPP-4M storage ring

Abstract The VEPP-4M storage ring system of SR front ends is described. SR is released by means of 14 front ends. Eleven of them are intended for beamlines of experimental stations. One front end is technical. For the permanent stabilization of an orbit of a beam with respect to a coordinate and angle in the vertical direction, two monitoring front ends are used. They take out SR from emission regions, which are at a large distance from one another.

An experimental photodiode array unit for ultrahigh-resolution recording of X-ray images

Abstract The geometrical resolution of modern solid-state X-ray imagers (photodiode arrays, PDA, and charge-coupled devices, CCD) is defined by their sensitive-pixel sizes and ranges from 10 up to 20 μm, i.e. these imagers yield considerably to photoemulsions in the resolution (0.1–1 μm of emulsions). In the present paper, an attempt to create a recording unit with a spatial resolution comparable to that of photoemulsions is described. First results of testing of the unit is described. The last was fabricated on the basis of a PDA containing 1024 sensitive pixels which are 150 μm high and are positioned with a 25 μm step. The feature of the given PDA consists of the presence of an individual charge-sensitive amplifier in each pixel. This allowed us to realize an algorithm of the digital double correlated sampling and to remove KTC noise which, under ordinary conditions, limits the PDA sensitivity. To diminish the noise level, the unit is provided with a double-correlated-sampling analog highway, which removes 1 f noises of the on-chip read preamplifiers and possesses the LF filter qualities, and with cooling of the PDA by a two-stage battery of Peltier cells. The unit was tested in the mode of the integrating X-ray imager. It is expected, by corresponding computer processing of the separate X-ray photon absorption events, that one will succeed in determining each event coordinate while allowing for the signal charge distribution between pixels due to charge diffusion in the PDA substratum.