| Paper | Title | Page |
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WEPPC023 |
Bypass Modules for Solenoid Shunting of 2MeV Electron Cooler for COSY | |
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| Beam focusing correction of electron cooler for COSY is realized with a partial current intake from solenoid's winding using special shunts. Maximal shunting current is 20 A with a voltage drop on solenoid's coil in a range of 15-30 V. The dispersion of shunting current is 100 ppm for 10 hour operation. Energy taken from solenoid's winding recuperates to 100-240 VAC, 50/60 Hz line. | ||
| WEPPC028 | High Voltage Terminal in COSY Electron Cooler | 503 |
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| In Budker INP SBRAS was developed electron cooler with energy up to 2MeV for COSY accelerator (Germany). Due to restricted footprint, cooler's collector and gun parts were combined in a single acceleration system – high voltage terminal. All power and control electronics were placed in a single isolated volume, filled with SF6 gas under 4-6 atm. pressure. Electronics is controlled via wireless CAN, and powered by multistage transformer, capable of 15 kW power at 26 kHz. Wireless control is passed through dedicated optically transparent window, also served for modulated laser beam, used in electron beam diagnostic. By construction, electronics is divided on two standalone units: collector power supply and gun-filter system (SGF). SGF is built on 19" EuroPak chassis, where were placed all power modules, needed for collector and gun pipe electrodes. All power outputs were protected against overvoltage and sparks, available while cooler exploitation. In SGF there were controlled up to 40 parameters altogether. SGF inner power supply provides stable operation in wide range of input voltage, up to ±50% from nominal. Also included in SGF are 2 auxiliary systems, used for beam guiding and beam diagnostics. | ||
| WEPPC032 | The Power Supply System for the Accelerating Column of the 2 MeV Electron Cooler for COSY | 512 |
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| The electron cooler of a 2 MEV for COSY storage ring FZJ is assembling in BINP. The high energy electron beam produced by the electrostatic accelerating column. The power supply for accelerating column of the electron cooling system consists of 33 distributed by the accelerating potential controlled modules. Each module has precision controlled voltage source 60 kV 1mA, and additional supply for the magnetic system solenoid with a maximal current of 2.5 amperes. All the system controlled through wireless ZIGBEE network. The report presents the structure of the power system, its parameters and the results of tests carried out in BINP. | ||
WEPPD027 |
Stepping Motor Drive Systems for Accelerator Technology | |
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| BINP SB RAS is developing various stepping motor drive devices for many years in accordance with requirements of acceleration and storage facilities. During this time several types of electric drives to control stepping motors with a 2-6 phases were developed. Electric drives are handled by special CANbus controller developed in BINP with smooth stepping motor acceleration and deceleration. Also special program was written to simplify adjustment of positioning system, this program allows operating using PC's Universal Serial Bus. | ||