Yu. V. Krylov

The SIBERIA dedicated synchrotron radiation source: status report on the storage rings complex at the Kurchatov Institute for Atomic Energy

Abstract This paper reviews the status of the SIBERIA storage rings complex. The parameters of the linac, booster synchrotron and main ring are given. The transfer of the SIBERIA-1 storage ring to its new site is described. The main parameters of the engineering systems for the SIBERIA complex are presented. The assembly of the SIBERIA-2 storage ring is planned to be finished in 1991. The SIBERIA storage rings complex has been constructed at the Kurchatov Institute for Atomic Energy (IAE) and is the first dedicated synchrotron radiation source in the USSR. The facility includes the SIBERIA-1 450 MeV electron storage ring, the SIBERIA-2 2.5 GeV electron storage ring, two electron transport lines EOC-1 and EOC-2, and an 80–100 MeV electron linac which serves as the injector. The general layout of SIBERIA is shown in fig. 1. All accelerators of the SIBERIA facility are designed and manufactured at the Institute of Nuclear Physics (INP) at Novosibirsk.

Modernization of the vacuum system of synchrotron radiation sources at the National Research Centre Kurchatov Institute

The modernization project of the vacuum system of the synchrotron radiation source at the National Research Centre Kurchatov Institute (NRC KI) has been designed and is being implemented; it includes a change in the system to high-voltage power sources for NMD and PVIG-0.25/630 pumps. The system is controlled via the CAN bus, and the vacuum is controlled by measuring pump currents in a range of 0.0001–10 mA. The system ensures a vacuum of 10−7 Pa. The status is mapped and the data collected into the archive are processed on the MS SQL Server platform. The efficiency and reliability of the vacuum system is increased by this work, making it possible to improve the main parameters of the SR source.

Acoustic experimental studies of high power modes in accelerating structure of Kurchatov SR source

The acoustic effects in metal constructions of accelerator electrodynamics structures permit to realize non-disturbing methods of determining the electrodynamics characteristics of structures for nominal working conditions (high RF-power level and for real temperature and vacuum distributions, with an intense beam). These effects are registered reliably by acoustic pickups installed on external surfaces of structures.

The multipole superconducting wiggler for the SIBERIA-2 storage ring

Abstract The project of the multipole superconducting wiggler for the SIBERIA-2 storage ring is discussed. The wiggler will be used for the generation of high-intensity synchrotron radiation (SR) beams in the X-ray energy region of 5–25 keV and will allow the SR beam intensity to be increased by a factor of 30–100. A SR beam driver system is also proposed, which would increase the number of independently operating stations on the SR wiggler beam lines.

Development of the system for stabilizing the position of a synchrotron radiation beam

The development of the system for stabilizing the vertical position of the “white” synchrotron radiation beam on the 2.5-GeV SIBERIA-2 storage ring at the Kurchatov Center of Synchrotron Radiation is considered. Two versions of the multichannel stabilizing system that are currently in operation are described. In the first, the procedures executed when introducing the first beam-stabilizing feedback loop in one channel are merely replicated for all other beamlines. In this case, an individual computer transmitting information to the control system of the storage ring via the local-area network is used in each beamline to process information from a beam position sensor equipped with a video camera. The other version of the stabilizing system is based on a central computer with a multichannel input card for video images. In this version, beam position sensors are sequentially interrogated by the computer and results of data processing are transmitted to the control system of the storage ring.

Monitoring the Electron-Orbit Shift and Radiation Beams

A system for performing television monitoring of the position of the synchrotron radiation beam is discussed. The results of measurements of the stability of the beam position in several user channels are presented. It is shown that further work is needed to determine and eliminate the factors causing beam displacement. The results of measurements performed by different methods of the electron-beam dimensions in the accumulator are presented.

Control system of the synchrotron radiation source SIBERIA

Abstract The SIBERIA accelerator complex includes a 80 MeV electron linac, a 450 MeV booster storage ring, a main 2.5 GeV storage ring and two transport lines for electron beams. The SIBERIA control system is based on distributed architecture and uses 24-bit CAMAC-oriented control computers and PCs as operator consoles. The paper describes the timing system, the control of the RF system and magnet power supplies, beam diagnostic and interlock systems, etc. Application software provides the control over beam characteristics, automatic energy ramping and monitoring of the parameters of elements and systems. With the use of the SIBERIA control system the electron beam was accelerated in the linac up to 68 MeV on December 1, 1992, and on December 18, 1992, a circulating beam was generated in the 450 MeV booster ring.

Commissioning of the SIBERIA-2 preinjector and first beam results

The DAW structure linac-the preinjector for the SIBERIA SR complex was commissioned on November 1, 1992 when the 62.5 MeV electron beam is obtained. A 6-m-long high impedance (92 MOhm/m) linac operates at 2.8 GHz. The paper describes the experimental RF characteristics of the linac structure and beam measurements obtained during the commissioning. The results of electron current, energy spectrum, beam profiles and emittance measurements are presented.<<ETX>>