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10th ICALEPCS Int. Conf. on Accelerator & Large Expt. Physics Control Systems. Geneva, 10 - 14 Oct 2005, TH4.1-1O (2005) STATUS OF THE SOLEIL CONTROL SYSTEM P. Betinelli-Deck1, A. Buteau1, D. Corruble1, B. Gagey1, N. Leclercq1, M. Ounsy1, J.P Ricaud1 On behalf of the SOLEIL ECA and ICA groups 1 Synchrotron SOLEIL, Saint Aubin, France, http://www.synchrotron-soleil.fr ABSTRACT This document presents the status of the Control systems deployed on the SOLEIL synchrotron facility, and explains the main technical choices and the underlying guidelines and project management rules followed to achieve these results. INTRODUCTION TO THE SOLEIL PROJECT SOLEIL project presentation The SOLEIL light source is a 2.75 GeV third generation light source under construction [1] near Paris in France, which will serve an international community in many fields of science. The project was launched in January 2002 and the construction started in August 2003. Now, the 100 MeV Linac injector and the Booster synchrotron are being commissioned. Installation of the Storage Ring elements is in progress and commissionning is scheduled in March 2006. The first beamlines hutches will be delivered within the next couple of weeks. It is planned to start users operation by the end of 2006 on 10 beamlines. Control groups organisation and missions Inside the SOLEIL Computing Division, the Control staff has been organized into 2 groups working in very close collaboration: the one in charge of the Software side and the other one in charge of the Hardware side. They have to specify, design, implement and maintain the Machine Controls System as well as the Beamlines ones. During the project, one of their main guidelines has been to use as much as possible standardized components with up-to-date technologies and to minimise home-built products so as to focus efforts on SOLEIL specific needs and user support INDUSTRIAL APPROACH The control system of a synchrotron shares many similarities with other large scientific facilities (LHC, W7X, LMJ…), and some elements are not very different to the control system of a factory or a power station. As a consequence, solutions to most of the control needs have already been found in the industry. High standardisation of components (HW and SW) We can quickly summarize the control requirements to: • Analog input or output – fast or slow, with large or small accuracy, synchronous or asynchronous • Digital input or output - with different levels (TTL, PECL…) • Data exchange mediums (serial link, GPIB) In order to meet these requirements, we have divided the electronics of the control system into three categories: • Programmable Logic Controllers (PLC) for slow and well known processes, • Compact PCI (CPCI) systems for fast or synchronous control, • Standalone crates to control motors. Each piece of hardware control is interconnected via Ethernet so as to exchange data and commands. Locally, a simple, industrial and widespread fieldbus (PROFIBUS) is used to connect equipment to the control system. 10th ICALEPCS 2005; P. Betinelli-Deck, A. Buteau, D. Corruble, B. Gagey, N. Leclercq, M. Ounsy, J.P. Ri... 2 of 6 In addition to these hardware concepts, our object oriented software framework, the TANGO one [2] [3], allows us to have such a modular approach and to detail software and hardware breakdown. Nevertheless the standardisation involves specifying the process equipment by taking into account the control. This is a challenge because the control is never the most important equipment specification. The “LEGO¾” model Small blocks of hardware and software have been identified and made, then assembled to build the Machine and Experiments control systems, like bricks of a LEGO [4] set. Each block or LEGO brick represents a generic project. For instance, to generate a synchronous 16 bits analog signal, a commercial product has been standardized and the software part (a TANGO Device Server) has been developed. The internal work has been organized in order to obtain blocks that can be easily assembled together. Large use of subcontractors and commercial products Because the size of the team is designed for the exploitation and not for the construction of SOLEIL, mass-market technologies and products are currently been used. We do not intend to reinvent the wheel. The goal is to implement an operational control that fits with SOLEIL’s needs. Moreover, using the mass market in control allows saving money. Calls for tender have been made to select products that fit our requirements at the best price: PLC, CPU, Axis controllers… Many subcontractors have been employed to carry out well identified, known and standalone projects which in turn have required additional staff with specific skills: this is the case for PLC integration, PCB design, Software Device Server development, java applications. To standardize th

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