Kozak, V.
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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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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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SYSTEM OF POWER SUPPLY RIPPLES MEASUREMENT FOR VEPP-2000 COLLIDER |
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D. Berkaevª, O. Belikov, V. Kozak, P. Shatunov, A. Medvedko Budker Institute of Nuclear Physics Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia Abstract VEPP-2000 collider magnet system consists of about 200 low-current corrections of magnetic fields which powered by independent power sources. During long-term operation of collider power sources ageing occurs. This ageing reveals in output current pulsation increasing with average statistical parameters maintaining. The standard power sources automation system does not allow discovering of such malfunctions which may affect on collider operation stability. Special automation system was worked out for the aims of the pulsation discovering. In oscillographic regime the system e gets measurements of all power sources channels one by one and determines malfunctions automatically carrying out spectrum analysis. The paper describes this technique and measurements results in details. ª – corresponding author |
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