Control and data acquisition systems for high field superconducting wigglers

This paper describes the control and DAQ system of superconducting wigglers with magnetic field range tip to 10.3 T. The first version of the system c ontrols a 7 T superconducting wiggler prepared for installation at Bessy-II (Germany). The second one controls a 10 T wiggler which is under testing n ow at the SPring-8 site (Japan), Both systems are based on VME apparatus. T he set of specialized VME modules is elaborated to arrange wiggler power su pply control, full time wiggler monitoring, and magnetic field high accurac y measurement and field stabilization. The software for the control of the wigglers is written in C language for VxWorks operation system for a Motoro la-162 VME controller. The task initialization, stops and acquisition of th e data can be done from the nearest personal computer (FTP host for VME), o r from the remote system as well. (C) 2001 Elsevier Science B.V. All rights reserved.