Accelerator Control Systems (ACO)


The primary task of the Accelerator Control Systems (ACO) department is to design, build, operate, maintain, expand, optimise and continuously renew the computerised control system of all GSI accelerator facilities, which currently consist of the linear accelerator UNILAC, the heavy ion synchrotron SIS-18, the experimental storage rings ESR and CRYRING and a large number of beam transport lines. Currently, about 60 staff members in 7 specialist groups of the department are working to maintain the installed control and machine/personnel safety systems in electronic hardware and software and to develop, test, install and commission the control system solutions for the FAIR accelerator centre, which is currently under construction.


The department comprises the following 7 working groups:

  • Hardware und Elektronics (HEL) - Electronics lab and development
  • Front-End Control (FEC) - Hardware related software development for (real-time) control of accelerator components
  • Controls Services (SER) - central system back-end services and middleware
  • Applications (APP) - Graphical user interface application programs for and Accelerator settings control and management
  • Networks and IT-Infrastructure (INN) - IT Infrastructure und technical networks for accelerator operation/control
  • Timing (TOS) - Timing system for time synchronisation, event distribution and sequencing
  • Industrial Controls (IND) - Industrial automation control solutions mainly for accelerator infrastructure systems

Projects & Activities

Present main activities of the department are:

  • Design, development and commissioning of the new accelerator control system for the FAIR facility
  • Modernisation and renovation of the control system of UNILAC, replacement of obsolete old controls solutions
  • Support for the ongoing accelerator operation


Abteilungsleitung / Head

Dr. Ralph C. Bär

Tel: +49 6159 71 2349

Office: BR3.2.158

Stellvertretung / Deputy

Jutta Fitzek

Tel: +49 6159 71 1689

Office: BR1.3.014

Project Assistance

Dr. Fredéric Ameil

Tel: +49 6159 71 2780

Office: BR3.2.159

Assistence / Secretary Office

Anke Herforth-Maschmann

Tel: +49 76159 71 3349

Office: BR3.2.158a