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BEAM MEASUREMENT SYSTEM OF VEPP-2000 INJECTION CHANNELS |
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D. Berkaevª, I. Ostanin, V. Kozak, V. Cherepanov, V. Repkov, E. Bykov Budker Institute of Nuclear Physics Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia Abstract The paper presents single-flight beam diagnostic system for VEPP-2000 injection channels. The system includes two types of beam position monitors: secondary emission monitors and image current monitors. Tuning of the system, calibration of monitors, hardware and software of the diagnostic system are described. Main goal of the beam diagnostic system is providing lossless beam transport. To solve such problem one needs to tune up as guide fields as focusing fields of transportation channels. First task – trajectory correction – is solved with response matrix inversion by SVD method. Second task – optic function reconstruction – is solved with help of multidimensional fitting of channel magnet structure parameters with minimization mean-square deviation of modelled response matrix from measured one. The paper presents results of practical experience with automated beam transfer and optic functions tuning of injection channels of VEPP-2000 complex. ª – corresponding author |
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BEAM PARAMETERS MEASUREMENT OF TECHNOLOGICAL 10 MeV LINAC |
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A.S. Alimov¹, E.A. Alimov¹, A.N. Kamanin¹, V.V. Khankin¹, N.I. Pakhomov¹, V.I. Shvedunovª¹, A.V. Gryzlov², S.V. Lamonov², A.P. Musatov², V.N. Sigalaev² ¹Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow, Russia ²Federal State Unitary Enterprise Research and Production Corporation "Toriy", Moscow, Russia Abstract Prototype of technological electron linac with beam energy 10 MeV has been designed and built in collaboration of SINP MSU and FSUE RPC "Toriy" [1]. We describe here methods and results of the beam parameters measurement and compare the results with calculations. ª – corresponding author |
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BEAM POSITION MEASUREMENT SYSTEM FOR THE VEPP-2000 COLLIDER |
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E.A. Bekhtenevª, E.N. Dementev, G.V. Karpov, Yu.A. Rogovsky Budker Institute of Nuclear Physics Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia Abstract A beam position measurement (BPM) system for VEPP2000 collider has been developed in BINP. 4 electrostatic pickups with diameter of vacuum chamber of 40 mm have been installed in ring. BPM system is able to measure the position of each of 2 bunches at every turn for beam current range 1÷100 mA. The resolution of measurement of the single bunch is about 100 microns for beam current of 10 mA. The features of system design, the main parameters and results obtained in VEPP2000 ring are presented. ª – corresponding author |
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CONTROL SYSTEM FOR INJECTION CHANNELS OF VEPP-2000 COLLIDER |
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D. Berkaevª, P. Cheblakov, I. Koop, I. Ostanin, V. Kozak Budker Institute of Nuclear Physics Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia Abstract The paper presents architecture, implementation and functionality of injection channels control system for VEPP-2000 collider. The software according to hardware system consists of different interacting subsystems responding on different injection channels parts. The paper describes structure and implementation of the hardware of the collider control system. The system consists of pulse-elements; steering coils power supplies and nanosecond high-power kicker (60 kV, 20 ns). The system is based on modern industrial protocol CAN-bus, CAMAC standard and specialized electronic BINP manufactured blocks according the standards. Software for the control system is based on several TCP/IP connected PC platforms working under operating system Linux and uses client-server techniques. CAN and CAMAC servers; different clients for control and power supply measurements; kicker control tools and their interaction with the rest of VEPP-2000 control system are described. ª – corresponding author |
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HEAT COUPLING IN MULTI-WIRE VIBRATING WIRE MONITOR |
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S.G. Arutunianª¹, I.E. Vasiniuk¹, G. Decker², G.S. Harutyunyan³ ¹Yerevan Physics Institute, Yerevan, Armenia ²Argonne National Laboratory, Argonne, USA ³Yerevan State University, Yerevan, Armenia Abstract Due to the extreme sensitivity of vibrating wire monitors (VWMs), it is possible to place these devices outside of an accelerator vacuum chamber in air to detect only very hard x-rays that penetrate the chamber. The VWM response time in air vs. vacuum is reduced substantially due to convective cooling. In this paper, the thermal coupling between the wires of a multi-wire VWM is described. Experiments in which x-ray sources were modeled by DC currents were performed to find the heat coupling coefficients between the wires. Using the assumption that the unknown beam transversal distribution is stable during the scan, a statistical data treatment allows the recovery of source profile from measured wire overheating. ª – corresponding author |
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INFORMATION TECHNOLOGIES IN THE IHEP U-70 ACCELERATOR COMPLEX CONTROL SYSTEM |
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V. Voevodinª Institute of High Energy Physics, Protvino, Russia Abstract Short descriptions of the U-70 accelerator complex treated as a fast cyclic technological process and its specifics from the controls point of view are introduced. The architecture of the currently used distributed computing and software in the Unix-like environment are presented. Main properties of unified informational scope for real time data processing are defined. The paper describes some current quantitative features of the U-70 control system and steps that were taken to homogenize the control system so as to be based on PC-compatible computers and Linux operating system only. ª – corresponding author |
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INTELLECTUAL CRATE-CONTROLLER K167 |
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L. Moseiko, N. Moseikoª, A. Schirokov Russian Research Centre Kurchatov Institute, Moscow, Russia Abstract This paper describes hardware and software of ICC-controller K167, developed for modernization of Kurchatov synchrotron radiation source (KSRS) automated control system (ACS). K167 is based on SBC-computer of miniMODUL167 type, programmable logical integrated circuit CPLD XC95288XL and being controlled by RTX-166Full V4.0 RTOS. Controllers K167 are installed into 12 crates and connected to the LAN server of ACS (automated control system) through CAN-bus. They control synchrotron radiation source with CAMAC devices developed in the Institute of Nuclear Physics SB RAS. ª – corresponding author |
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ION MONITOR OF TRANSVERSE BEAM PARAMETERS FOR INR PROTON LINAC |
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P. Reinhardt-Nickoulinª, A. Feschenko, S. Gavrilov Institute for Nuclear Research of Russian Academy of Sciences, Moscow, Russia Abstract Residual gas ion monitor was developed and installed on INR Proton LINAC output to provide non-intercepting measurements of beam position, transverse section form and beam profiles for wide energy and amplitude range. The ion transverse section monitor details and TV image processing system are described. The available results of beam pulse measurements are presented. ª – corresponding author |
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MODERNIZATION OF BCT FOR INR LINAC |
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P. Reinhardt-Nikoulinª, A. Feschenko, A. Mirzojan Institute for Nuclear Research of Russian Academy of Sciences, Moscow, Russia Abstract The INR Linear Accelerator beam is now 10÷12 mA amplitude with pulse duration 0.3÷200 microseconds and the repetition rate 1÷50 Hz. It is necessary for various nuclear experiments and applications. The Beam Current Transformers (BCT) system was modernized to provide higher sensitivity of beam current pulse measurements. New BCT electronics was developed and installed also. This electronics was tested in high radiation conditions of experimental areas successfully. Besides that new wide bandwidth BCT Monitor was developed, tested and installed for measurements both short and long beam current pulses. The available results of beam pulse measurements are given. New BCT details are described. ª – corresponding author |
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MULTI-PINHOLE CAMERA FOR BEAM POSITION AND VERTICAL ANGLE STABILIZATION |
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O.I. Meshkov¹, A.N. Zhuravlevª² ¹Novosibirsk State University, Novosibirsk, Russia ²Budker Institute of Nuclear Physics Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia Abstract The VEPP-4M electron-positron collider is now operating with the KEDR detector for the experiment at the energy area between 1100÷3000 MeV. In these experiments, monitoring of beam coordinates and angles at the interaction point is important for energy stabilization. BPM system of VEPP-4M doesn't provide the reliable information about beam orbit when machine operates as a collider. The diagnostics, described in this paper, is a good supplement for BPM data. The vertical coordinate and angle of the beam can be measured and stabilized at two points that are placed symmetrically relative to the beam interaction point. The precision of the measurements and the collider energy accessible for the diagnostics are discussed. ª – corresponding author |
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POWER SUPPLY CONTROL SYSTEM FOR THE LINAC OF THE "NESTOR" STORAGE RING |
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V.N. Boriskinª¹, S.K. Romanovskyi¹, A.N. Savchenko¹, A.A. Sarvilov¹, D.L. Stepin¹, G.N. Tsebenko¹, A.S. Chepurnov², I.V. Gribov², A.F. Shamarin³ ¹National Science Center Kharkov Institute of Physics and Technology, Kharkov, Ukraine ²Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow, Russia ³MARATHON Co Ltd, Moscow, Russia Abstract To create the X-rays source based on the phenomena of the Compton laser radiation scattering on the relativistic electrons it was a necessity to develop electron storage ring [1] and accelerator-injector with the beam energy 60÷100 MeV [2]. The control system of the power supply for the electron linac magnetic system is described in the paper. Programmable current sources equipped with the intellectual CAN-bus (CANopen) [3] controller have been designed for the specific accelerator applications. The control system software was improved to operate with industrial CANopen protocol. The test results of current source are presented. ª – corresponding author |
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THE PROGRAM TOOLS FOR KSRS OPERATION |
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E. Kaportsevª, Yu. Krylov, V. Korchuganov, K. Kuznetsov, L. Moseiko, N. Moseiko, Yu. Yupinov Russian Research Centre Kurchatov Institute, Moscow, Russia Abstract The running cycle of Kurchatov Synchrotron Radiation Source (KSRS) includes the injection of electrons with energy 80 MeV from the linear accelerator in the booster storage ring Siberia-1, the accumulation of a electron current up to 400 mA and, then, electron energy ramping up to 450 MeV with the subsequent extraction of electrons in the main ring, storage ring Siberia-2, and accumulation there up to 300 mA, and at last the energy ramping up to 2.5 GeV. The control system is based on the distributed network of the processors operating technological systems of KSRS. The operational level of control system is realized as a local network of the personal computer. Instrument of work of the operator is a set of the applied programs realizing the inquiries to the control system. The database describing logic channels of the control, modes of the technological systems and the script of the running cycle of accelerating facilities is developed. Logic channels of the control are a basis for creation of the user interface. The examples of realization of the software used in operative work KSRS are given. ª – corresponding author |
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