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Accelerator Scientist

The European Spallation Source is looking to recruit an Accelerator Scientist

  • Closing soon
  • Closing date: 28 Feb 2021
  • Sweden | European Spallation Source
  • Date posted: 28 Jan 2021
  • Job type: Research facilities
  • Disciplines: Accelerators, neutron & light sources  | Computational science & software engineering 

The European Spallation Source, ESS, a partnership of European countries, is hiring motivated and inspired people to design, construct and operate the world’s most powerful neutron source. We seek ambitious, talented people in different fields who are excited about playing a part in the future of science in Europe.

ESS can offer a variety of things, such as passionate and international colleagues, a vibrant melting pot of diversity, and a challenging, exciting and high paced work environment. We value and need expertise, innovative minds and great ways of leading and interacting with people from all over the world.

Come and change the world with us!

The Technical Directorate at the European Spallation Source (ESS) in Lund, Sweden invites applications for an Accelerator Scientist in the Accelerator Division.

The Accelerator Division is responsible for the design, construction, installation, commissioning and operation of the ESS accelerator, in collaboration with partner institutions and other divisions of the ESS. The candidate will join a vibrant and multi-cultural beam physics section within the ESS Accelerator Division.

Job description

The work will focus on the challenging aspects of the beam physics of the accelerator, including simulations and taking part in the exciting beam commissioning of the ESS linac. During the period of commissioning the candidate is expected to:

  • Perform simulations and beam dynamics studies for the commissioning phase, including behaviour of the space charge dominant beam under off-nominal conditions possible during commissioning and operations.
  • Take part in the commissioning studies and machine setup.
  • Perform analysis on the data taken during commissioning.

During the steady operation of the accelerator, the candidate is also expected to:

  • Participate in machine development shift, in order to bring the linac to a full 5MW operation.
  • In the future, overview the machine tuning, train and give expert support to the Operations Team.

In the first two years, this position focuses on tasks related to the licensing of the linac, e.g. radiation hazard analysis of the accelerator.

From the candidate, regular presentations and documentations of the work carried out will be necessary, in collaboration with specialists from a wide range of disciplines.


To be a successful candidate the applicant is required to have:

  • Doctoral degree in physics or related area or equivalent experience, with at least five years of experience after the PhD.
  • Good knowledge of the accelerator physics, preferably, beam dynamics of hadron linacs with experience in producing succinct documents.
  • Excellent capabilities to perform research shall be demonstrated through publications in peer-reviewed journals and/or at conferences in the accelerator domain.
  • Solid knowledge of particle tracking and beam optics codes and commissioning experience are an advantage.
  • Knowledge in programming languages (Python, Java, etc) and programming of GUIs/scripts for data acquisition or machine control will have a positive impact.

We are looking for a candidate with a strong interest in academic research, an interest to collaborate and exchange knowledge and who is good in documenting the work. Good oral and written proficiency in English is required, as well as the capacity to work both independently and in a team. To be successful in this position the candidate must be able to interact well with others and to work in a balanced way even when demands are high.

Our work environment is characterised by fast growth, fast pace of work, and an international atmosphere with highly skilled personnel. You must therefore enjoy the diversity of such an environment and have a personality suited for the challenges it presents. Our work environment is exciting and forward thinking and relies heavily on personal initiative.

Duration and location

The position is permanent with six months initial probationary period. Your work place will be situated in Lund, Sweden.

Start date

The position is to be filled as soon as possible.

Application and contact

Please provide your curriculum vitae in English by clicking on “apply” and follow the instructions.

Please note that we only accept applications via the ESS website.

For some roles at ESS health check-ups and security clearance are required, and thus this might be applicable in the final parts of the recruitment process.

The deadline for applications is 28 February 2021.

For more information regarding the ESS recruitment process, please follow this link

For further information regarding the position, please contact the recruiting manager, Section Leader for Beam Physics, Mamad Eshraqi,

For further information regarding the recruitment process, please contact HR Officer, Karin Vandenborre,

For trade union information please contact Unionen/Conny Wendt at +46 72 179 24 63 or SACO/Swedish Association of Graduate Engineers/Riccardo Bevilacqua at +46 72 179 22 28.

We look forward to receiving your application!


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