Neutron Instrument Scientist for ESS Test Beamline (TBL)

Big Science Sweden; Sweden; On-site; SEK 600,000 - 800,000; Full time

Job summary

ESS in Sweden invites applications for an instrument scientist for the dedicated Test beamline (TBL). The role focuses on characterizing the neutron source and supporting a multipurpose experimental cavity with various detectors.

You will work on time-of-flight techniques, neutron tomography, and other advanced methods to exploit the long-pulse structure of the ESS source and to enable high-quality user science.

Responsibilities

• Characterize target–reflector–moderator system and verify neutron source performance (beam energy, stability, pulse length, rastering).
• Compare measured vs simulated neutronic performance of the moderator to reference neutron scattering instruments.
• Optimize instruments and methods to exploit ESS long-pulse time structure.
• Serve as a local characterization station supporting neutron optics, polarization, and detectors.
• Support the user program with exploratory imaging, neutron diffraction, and single-crystal alignment.
• Work within flexible instrument design for multiple detectors and sample environments, enabling versatile measurements across thermal to fast neutrons and gamma rays.
• Apply time-of-flight, neutron tomography, activation analysis, and grating interferometry.
• Adapt modular TBL design as objectives evolve to stay relevant.
• Note: TBL construction is complete; the team prepares for first neutrons.

Job description

ESS in Sweden invites applications for an instrument scientist for the dedicated Test beamline (TBL). The role focuses on characterizing the neutron source and supporting a multipurpose experimental cavity with various detectors.

You will work on time-of-flight techniques, neutron tomography, and other advanced methods to exploit the long-pulse structure of the ESS source and to enable high-quality user science.