PhD student position (all genders) in Accelerator Physics

GSI Helmholtzzentrum für Schwerionenforschung; Deutschland; Vor Ort; EUR 40.000 - 60.000; Teilzeit

Zusammenfassung

A leading research institution in Germany is seeking a PhD student in Accelerator Physics. This part-time position involves developing superconducting re-bunchers and designing automated test stands for accelerator cavities. The ideal candidate holds a Master’s degree in physics and has a keen interest in RF-systems. This role offers a multifaceted working environment with excellent career development opportunities and a commitment to work-life balance.

Leistungen

Mobile working

Company health management services

Job ticket

Supplementary pension benefits

Company sports club

Qualifikationen

• University Master Degree in physics required.
• Ability and interest to work with RF-systems and accelerator installations.
• Knowledge in rf-technics, accelerator physics, computational physics is essential.

Aufgaben

• Develop superconducting re-buncher for the HELIAC.
• Design and implement automated test stands for superconducting cavities.
• Participate in operation of first cryogenic module of HELIAC.

Kenntnisse

RF-systems

Accelerator installations

Computational physics

Team-oriented

English

German

Ausbildung

University Master Degree in physics

Tools

CST Studio

Python programming

Analog and digital electronics

Jobbeschreibung

Organisation/Company GSI Helmholtzzentrum für Schwerionenforschung Research Field Physics Researcher Profile Recognised Researcher (R2) Established Researcher (R3) Country Germany Application Deadline 23 Dec 2025 - 14:06 (UTC) Type of Contract To be defined Job Status Other Offer Starting Date 25 Nov 2025 Is the job funded through the EU Research Framework Programme? Not funded by a EU programme Is the Job related to staff position within a Research Infrastructure? No

Offer Description

Area of research:

Scientific / postdoctoral posts

25.11.2025

The 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, is under construction through international cooperation. GSI and FAIR offer the opportunity to work in this international environment with a team of employees committed to world-class science.

In cooperation with the Johannes Gutenberg-Universität Mainz the LINAC department offers a

PhD student position (all genders)
in Accelerator Physics

Reference number: 25.141-6680

for a contract starting at the earliest possible date.

The position is embedded in the development program for the superconducting linear accelerator HELIAC (HElmholtz LInear ACcelerator).

HELIAC consists of a normal-conducting injector LINAC and a superconducting section comprising up to four cryogenic modules.

The candidate will be responsible for the development of the superconducting re-buncher for the third cryogenic module of HELIAC. Another important task will be the design and implementation of an automated test stand for superconducting cavities of HELIAC, which are currently under fabrication. The work will include aspects of RF design, cryogenic integration, and test automation, in close collaboration with experts from the RF, cryogenics, and control systems groups.

The successful candidate will be responsible for:

• The RF design and simulation of superconducting re-buncher cavity using CST Studio
• The thermal and mechanical design of superconducting the re-buncher cavity
• The development of a dedicated test stand for high-power RF testing of the superconducting accelerator cavities.

Other tasks include:

• Participation in operation of first cryogenic module of HELIAC
• Participation in beam times
• Operation of cryogenic infrastructure.

Your qualifications and skills:

• University Master Degree in physics
• Ability and interest to work with RF-systems and accelerator installations
• Knowledge in one or more of these fields: rf-technics, accelerator physics, computational physics
• Team-oriented, a structured approach to work and safe working methods
• Good language skills in English and German.

The following qualifications and skills are desirable:

• Experience in Python programming
• Experience with analog and digital electronics

You may expect a multifaceted and interesting position within an internationally leading research institution. Teamwork and the willingness to undergo further training are essential for us. GSI also offers various options for balancing family and career, mobile working, company health management services, company social counselling services, personal training and qualification opportunities, a job ticket, supplementary pension benefits, additional company leisure time and a company sports club ‘Schnelle Ionen’.

The position (65% part-time) is limited until 31.08.2028. 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 find this position interesting and challenging and would like to work in an exceptional, international, strongly technical environment, please send your full application documents with information of your earliest possible starting date and the reference number 25.141-6680 above by 09.12.2025 at the latest via the online portal on our job site:

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.