• A.Batrakov, P.Vobly, S.Zverev, I.Ilyin, V.Kozak, E. Kuper, V.Mamkin V.Ovchar, G.Fatkin, V.Tsukanov, A.Volkov
  Budker Institute of Nuclear Physics, Novosibirsk, Russia

In BINP for creation of measuring systems with Hall sensors CAMAC - electronics were used many years. This system had good parameters and successfully used for measurements of magnets produced in BINP as for installations of VEPP-family as for foreign facilities: LHC (CERN), SLS (Switzerland), BESSY (Germany), SAGA (Japan). Hardware deterioration and MS DOS application of previous system demanded to design a new electronics and modern software. The paper describes the new VME-based system and MS Windows application developed for replacement of old system. The system hardware consists of VME crate controller, VME - RS-232 interface, VME - CAN interface and three specialized units: Hall-Sensor analogue Interface (VMEHSI), precision ADC (VMEADC16) and Hall carriage Thermo Stabilizer (HTS), fabricated in Budker INP. Resolution of measuring devices is less than 1uV and stability is better than 10^-5. Software of the Hall-sensor measuring system consists of embedded part, which operates on VME-controller under the mcLinux operational system, and user's high-level software "WinHall", which is a MS Windows application with user-friendly graphical interface. The features of new system and practice results are reported.

55

• B.Gudkov, A.Filipchenko, V.Kozak, E.Kuper, G.Kurkin, A.Medvedko, G.Serdobintsev, S.Tararyshkin, V.Ushakov,
  Budker Institute of Nuclear Physics, Novosibirsk, Russia

• V.Korchuganov, Yu.Krylov, A.Valentinov, Yu.Yupinov
  KCSR RSC Kurchatov Institute Moscow, Russia

• N.Spinko
  LSRIPP, Zelenograd, Russia

Control system of Zelenograd Synchrotron Radiation facility, designed at the end 80-th last century, is in commission now. Old system was CAMAC based mainly. More advanced variant will consist in replacement of CAMAC modules with the embedded controllers. The report describes new hardware and software solutions.

228

• V. Ovchar, E. Kuper
  Budker Institute of Nuclear Physics, Novosibirsk, Russia

• K.Dahlerup-Petersen, G.-J. Coelingh
  Accelerator Technology Department, CERN, Geneva, Switzerland

Cluster of 8 electro-mechanical D.C. breakers will be used for current interruption and fast extraction of magnetic field energy to dump resistors in the superconducting chains of main dipoles and quadrupoles in LHC (Large Hadron Collider), CERN, Switzerland. Parallel connection (four brunches) and series connection (two in series) will be used in cluster for current and voltage matching. Contact erosion as usual occurs in the slowest branch, in two breakers from eight in cluster. The number of interruption is limited by contact erosion and some parts need replacement after some interruptions with arcs. The total number of breakers in the system is 256. For breakers resources registration and for prophylaxis works facilitation the 8 channels Arc Detector was designed. Each channel consists of light signal integrator, comparator and counter of events. Spark Detector for registration of discharges in power RF generators and feeders was designed on the base of Arc Detector

255

• D.E.Berkaev, P.B.Cheblakov, V.R.Kozak, Yu.M.Shatunov, I.A.Koop, E.A.Kuper, A.P.Lysenko, V.V.Druzhinin, P.Yu.Shatunov, Yu.A.Rogovsky, A.N.Kyrpotin
  Budker Institute of Nuclear Physics, Novosibirsk, Russia

Electron-positron collider VEPP-2000 is under commissioning at Budker Institute of Nuclear Physics. The paper presents architecture, implementation and functionality of the software of the collider control system. The software according to hardware system consists of interacting subsystems responding on different acceleration facility parts. Control system software is based on several TCP/IP connected PC platforms working under operating system Linux and uses client-server techniques. The paper describes implementation, operating possibilities and perspectives of VEPP-2000 software.

The paper also presents structure, architecture and implementation of the hardware of the collider control system. The system consists of pulse-elements, steering coils power supplies, high-current main field power supply, RF subsystems and some other special subsystems (such as vacuum, temperature, etc. control subsystems). The system is based on modern industrial protocol CAN-bus and specialized electronic BINP manufactured blocks according the standard. The paper describes implementation of different subsystems based on CANbus devices, and operating characteristics and possibilities.

52

• E.N.Dementyev, V.R.Kozak, E.A.Kuper, A.S.Medvedko, A.D.Oreshkov, A.V.Ovchar, T.V.Salikova, P.A.Selivanov, S.S.Serednyakov, E.N.Shubin, S.V.Tararyshkin, N.A.Vinokurov
  Budker Institute of Nuclear Physics, Novosibirsk, Russia

In this article the architecture of control system of Free Electron Laser for the Siberian Center for photochemical research is presented. The basic structure of whole control system and the basic hardware components of individual subsystems are described. Also the hardware interfaces and main types of control devises, used for connection and control are shortly described. The main features of each subsystem and of whole control system are enumerated. Also the main features of control software are described.

209

• E.A.Kuper, A.D.Oreshkov, A.V.Repkov, T.V.Salikova, D.A.Sklokin, S.V.Tararyshkin, N.A.Vinokurov
  Budker Institute of Nuclear Physics, Novosibirsk, Russia

In this article is described the radiation dosimetry diagnostic system of the powerful terahertz Free Electron Laser constructed in the Siberian Center for Photochemical Research. Radiation dosimetry system contains the new technological decisions: hardware and software intended for the radiation’s monitoring and tracing of losses of a beam in the vacuum chamber.

231

MODP22

• S.E.Karnaev, M.Khelik, M.V.Kollegov, V.R.Kozak, E.A.Kuper, A.N.Selivanov
  Budker Institute of Nuclear Physics, Novosibirsk, Russia

VEPP-4M collider has been worked since 80th. Growing expenses for maintenance of obsolete electronics make us to conduct a number of modernization programs. The problem is in keeping of facility in operating state during modernization process. To achieve it we have decided to implement new electronics on modern components but pin-to-pin and bit-to-bit compatible with obsolete prototypes. It allows keeping intact software and replacing old equipment by hidden way. There were described two of these new devices. They are intelligent multichannel DACs for controlled power supplies. VEPP-4M includes approximately 300 power supplies for bending magnets and steering coils controlled by these devices. One device provides 16 channel of DAC with resolution 16 bit and accuracy better than 0,01%. The second device is intended for precise power supplies for bending magnets and provides resolution 20 bits and accuracy up to 0,001%. The paper covers different aspects of design and resolved problems and shows achieved results.

• A.A.Bryazgin, B.L.Factorovich, E.A.Kuper, V.V.Repkov
  Budker Institute of Nuclear Physics, Novosibirsk, Russia

Presented work describes the modulator of electron current of the industrial accelerator ILU-10. The main target of building of the unit is decreasing of energy spectrum and stabilization amplitude of the accelerated current. The base of unit is HV linear DC amplifier (up to 5000V) with power (up to 5 A) MOS-FET output stage. It allows to create feedback and stabilize either current or energy of the beam. Also this unit has mode for tuning any shape of beam current and energy. Unit has microprocessor control circuit which provides useful link with computer control system of accelerator and if needed provides the handle operation and indicates main parameters of electron beam.

345