RuPAC 2006 - List of Authors

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Karnaev, S.E.

Paper	Title	Page
MODP22	Intelligent Digital To Analog Converters for VEPP-4M Magnetic system 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.
MODP15	The Precision Temperature Measuring System Of The VEPP-4m Electron-Positron Collider V.Kaplin, S.Karnaev, A. Kvashnin, I.Morozov, O.Plotnikova Budker Institute of Nuclear Physics, Novosibirsk, Russia The temperature of the magnets is an important factor of the average energy stability of the circulating bunches. The work describes the VEPP-4M temperature measurement system based on 32 channel temperature controllers using High-Precision Digital Thermometers DS1621 and DS1631 with the resolution 0.02 and 0.06 degrees centigrade respectively. Temperature values are renewed for the all of 32 channels of each controller every second automatically. The controllers are connected to PC via serial interface RS232/RS485. The program running in PC inquires all controllers and writes data to database in terms of PostgreSQL at every minute. The graphic interface provides browsing of the temperature diagrams of the selected sensors over any period of time. The programs run under Linux and use Motif library.	235

Paper

Title

Page

MODP22

Intelligent Digital To Analog Converters for VEPP-4M Magnetic system

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.

MODP15

The Precision Temperature Measuring System Of The VEPP-4m Electron-Positron Collider

V.Kaplin, S.Karnaev, A. Kvashnin, I.Morozov, O.Plotnikova
Budker Institute of Nuclear Physics, Novosibirsk, Russia

The temperature of the magnets is an important factor of the average energy stability of the circulating bunches. The work describes the VEPP-4M temperature measurement system based on 32 channel temperature controllers using High-Precision Digital Thermometers DS1621 and DS1631 with the resolution 0.02 and 0.06 degrees centigrade respectively. Temperature values are renewed for the all of 32 channels of each controller every second automatically. The controllers are connected to PC via serial interface RS232/RS485. The program running in PC inquires all controllers and writes data to database in terms of PostgreSQL at every minute. The graphic interface provides browsing of the temperature diagrams of the selected sensors over any period of time. The programs run under Linux and use Motif library.

235