PhD physicist (all genders) Ref. No.: 25.143-1230

GSI Helmholtzzentrum für Schwerionenforschung in Darmstadt operates one of the leading particle accelerators for science. Currently, the new FAIR (Facility for Antiproton and Ion Research) one of the world’s largest research projects, is built in international cooperation.

The FRS/SFRS Experiments Department is central for many nuclear physics experiments at GSI/FAIR. It operates the FRS fragment separator for the production and investigation of exotic atomic nuclei and their properties within the framework of the NUSTAR collaboration. It prepares for novel experiments at the next-generation super-conducting fragment separator Super-FRS of the international accelerator facility FAIR. The equipment needed for this is currently being installed at the Super-FRS experiment area so that it will be available for experiments at FAIR during the ‘Early Science’ and ‘First Science’ phases: the Super-FRS Ion Catcher at the high-energy branch and a detector system for reaction and decay experiments at the mid-focus of the Super-FRS.

For the commissioning of the new detector systems with and without beam, as well as for the planned experiments at the Super-FRS, the ‘FRS/SFRS Experiments’ department is looking for a

PhD physicist (all genders)

Posting ID:25.143-1230

The main tasks include:

• Integration (mechanical, vacuum technology, electrical, safety, functional, control technology, supply technology) of the new equipment for the Super-FRS experiment collaboration at Super-FRS at FAIR
• Commissioning in the new FAIR environment, initially without beam, later with beam; testing of function and performance; verification of specifications; documentation of results; commissioning with increasing beam intensity under realistic experimental conditions with the new beams of the Super-FRS
• Safety-related preparation, integration and acceptance of the new systems at FAIR (general occupational and operational safety, specific issues such as the operation of cryogenic systems, handling of radioactive sources, etc.), preparation of risk assessments, implementation and review of all relevant safety measures in connection with the operation of the new systems
• Preparation and performing of the ‘Early Science’ and ‘First Science’ phases for initial experiments of the Super-FRS Experiment Collaboration.

Requirements:

• Completed degree in physics (diploma or master’s) with a doctorate in the field of nuclear physics
• Very good knowledge and practical experience in the commissioning and operation of nuclear physics detector systems and their integration into electromagnetic spectrometers and separators
• Very good knowledge of detector technology (especially gas-filled detectors), cryogenics, vacuum technology, electronics
• Experience in safety engineering and CAD programmes is advantageous
• Very good written and spoken English skills are required, as well as the ability to work in a team and communicate with other technical specialist groups.

The position is full-time (100%) and permanent. Salary is as specified in the collective agreement for public employees (TVöD Bund), effective at GSI.

GSI promotes the professional development of women and expressly welcomes applications from women. Handicapped persons will be preferentially considered when equally qualified.

If you have any questions regarding this application, please contact Dr. Timo Dickel (T.Dickel(at)gsi.de ).

If you find this position interesting and challenging and would like to work in an exceptional, international, strongly technical environment,

Please send your complete application documents, including your salary expectations and your earliest possible start date, quoting reference number 25.143-1230, by December 23, 2025, at the latest, to our careers page.