GSI Helmholtzzentrum für Schwerionenforschung” in Darmstadt operates one of the leading particle accelerators for science. Currently, the new FAIR ( F acility for A ntiproton and I on R esearch), one of the world's largest research projects, will be built in international cooperation. GSI and FAIR offer the opportunity working in this international environment in a team committed to conduct excellent science every day.

We are looking for a committed person to join the Super FRS team.

Detector and Instrumentation Expert for the Super-FRS subproject of FAIR (all genders)
Reference: 25.92-6821

This role focuses on the development, integration, and operation of complex detector systems used for beam diagnostics and particle identification in high-radiation environments.

The Super-FRS (Superconducting Fragment Separator) is a state-of-the-art, two-stage separator that enables the delivery of rare-isotope beams to various experimental branches. With its unique technical requirements, including fast timing, large phase-space acceptance, and remote handling in hot cell areas, the facility demands advanced and robust detector instrumentation and continuous innovation in experimental design and diagnostics.

This position is ideally suited for an experimental nuclear physicist with hands-on experience in nuclear detector technology, accelerator operations, beam tuning, and system diagnostics. The successful candidate will contribute to both ongoing operations and developmental tasks, ensuring reliable detector performance under demanding conditions.

Your tasks:

• Development, setup, calibration, and maintenance of detectors used for beam monitoring and fragment identification (PID), including position, timing, and energy-loss detectors.
• Integration of detector systems with fragment separators and spectrometers of Super FRS.
• Support and participation in experimental campaigns, from hardware setup to data acquisition and analysis.
• Contribution to feasibility studies and Monte Carlo simulations of detector configurations and beam interaction.
• Execution of hands-on laboratory work, including test beam experiments, small-scale detector repairs, and electronics troubleshooting.
• Collaborate with accelerator physicists and operations teams for beam tuning, beam diagnostics, and alignment.
• Provide technical input for the safe operation of detector systems in radiation zones, including hot-cell-compatible components and remote-handling readiness.
• Documentation, reporting, and support of design reviews and safety procedures.

Your skills:

This position is aimed at experimental physicists with a PhD and extensive experience in nuclear instrumentation, beam handling and detector operation, particularly in international, multidisciplinary laboratory environments.

• PhD in Experimental Nuclear Physics or related field.
• Proven expertise with nuclear detector systems and beamline diagnostics.
• Hands-on experience in beamline instrumentation, beam tuning, and fragment separation spectrometers (e.g. FRS, RIPS).
• Solid programming skills for analysis and simulation (C++, Python, ROOT, GEANT4, NPTool).
• Familiarity with experimental data analysis techniques including PID methods, and angular correlation analysis.
• Understanding of accelerator physics and radiation safety considerations.
• Strong team collaboration skills in an international research environment.
• Excellent command of English and good knowledge of German (or willingness to acquire it).

Preferred Experience:

• Experience in campaigns at major facilities (e.g., GSI, RIKEN, ANL, CERN, etc.).
• Familiarity with experimental design in high-radiation environments.

We offer a varied and interesting position within an internationally well-accepted research facility.

The position is time limited to 31.08.2028 . Salary is as specified in the collective agreement for public employees (TVöD Bund), effective at GSI.

GSI promotes career development of women. Therefore, women are especially encouraged to apply for this position.

Preference is given to severely disabled people if equally qualified and suited for work at the test benches as well as the FAIR construction site.

Further information about FAIR and GSI is available at www.gsi.de and www.fair-center.eu.

Please send your complete application documents including your salary expectations, your earliest start date and the reference 25.92-6821 at the latest by 29.08.2025 preferably via our online application portal:

Online-Application

GSI Helmholtzzentrum für Schwerionenforschung GmbH
Human Resources Department

GERMANY

This research center is part of the Helmholtz Association of German Research Centers. With more than 42,000 employees and an annual budget of over € 5 billion, the Helmholtz Association is Germany's largest scientific organisation.