Particle Physics Reference Library

This third open access volume of the handbook series deals with accelerator physics, design, technology and operations, as well as with beam optics, dynamics and diagnostics. A joint CERN-Springer initiative, the “Particle Physics Reference Library” provides revised and updated contributions based on previously published material in the well-known Landolt-Boernstein series on particle physics, accelerators and detectors (volumes 21A,B1,B2,C), which took stock of the field approximately one decade ago. Central to this new initiative is publication under full open acces

DESIGN AND IMPLEMENTATION OF THE REMOTE CONTROL SYSTEM OF THE DIGITAL MAGNET POWER SUPPLY OF CHINA SPALLATION NEUTRON SOURCE THE REQUIREMENT OF REMOTE CONTROL SYSTEM OF POWER SUPPLY -cc Creative Commons Attribution 3.0 (CC-BY-3.0)

Abstract The magnet power supplies of the China Spallation Neutron Source (CSNS) can be classified into three types: rapid cycling synchrotron (RCS) resonant power supplies, fast response power supplies and DC power supplies. All of the magnet power supplies are controlled by the intelligent controller called Digital Power Supply Control Module (DPSCM), which can regulate the current and voltage circuit. The DPSCM is developed by the power supply group. It has two RS-232 communication interfaces. All the command setting and reading power parameters are transmitted by Modbus protocol. Therefore, we made the communication protocol based on Modbus RTU between the remote control system and the DPSCM. This paper introduces the design of the remote control interface to the DPSCM. We developed EPICS IOC applications and real-time database on MOXA embedded serial device DA710 and OPIs using Control System Studio according to different kinds of the power supplies. We have tested the remote control system with these kinds of power supplies. The test result shows that the remote control system is stable and reliable and it can basically meet the requirements of power supply system and physicists after the continuously test for two weeks. DPSCM INTRODUCE The accelerator magnet power supplies of the CSNS can be classified into three types by working mode: the 25Hz AC source with DC bias (6 sets), corrector power supply (34 sets) and DC power supply (240 sets). Essentially, all of these power supplies are controlled by DPSCM which designed by power supply group. It just need to be burnt proper program into FPGA according to the kinds of power supply. As shown in REMOTE CONTROL SYSTEM DESIGN Remote control system needs multi-serial devices for the large number of power supplies, 280 sets in total and the interface is all the RS-232 port. We ultimately chose high performance DA710 manufactured by MOXA company. The magnet power supply remote control system design scheme is shown i