INTERNSHIP DETAILS

Neutronics internship - Assessment of reactor physics experimental integral data knowledge for chloride based nuclear reactors

CompanyThorizon
LocationAmsterdam
Work ModeOn Site
PostedJuly 14, 2026
Internship Information
Core Responsibilities
The intern will identify, analyze, and critically assess experimental integral data for chloride-based nuclear reactors. This includes performing literature reviews, comparing experimental results with calculations, and proposing recommendations for future data needs.
Internship Type
intern / student
Company Size
45
Visa Sponsorship
No
Language
English
Working Hours
40 hours
Apply Now →

You'll be redirected to
the company's application page

About The Company
Nuclear without compromise - Thorizon is building a new generation of modular reactors to power industry, data centers and energy independence. Our molten salt technology is intrinsically safe and affordable. By using nuclear waste as fuel, we unlock far more value from the resources the world already has. Affordable power and high temperature heat - Thorizon is a European developer of next-generation small modular reactors. Our reactors provide reliable baseload power and high-temperature heat for industry. Their compact footprint and low-pressure operation enable deployment close to where it’s needed. Together with leading partners in energy and manufacturing, we are bringing the first Thorizon reactor to market. Designed for series production from day one.
About the Role

Your mission

The main objective of the internship is to identify, analyze, and critically assess existing reactor physics experimental integral data relevant to the project’s scope (e.g. k-eff, reaction rates, ...). The results will contribute to a better understanding of current data limitations and uncertainties, and help guide modelling, simulation, and experimental efforts within the project.

In this role you will:

Main Tasks 
  • Perform a comprehensive literature review of experimental integral data from journals, technical reports, and databases (e.g. IRPHE, ...).
  • Identify key experiments, measurement techniques, and associated uncertainties.
  • Compare experimental results with calculated results and give an interpretation of the comparison where relevant.
  • Assess the consistency, reliability, and applicability of available data for the targeted innovative application.
  • Summarize findings in clear technical reports and presentations.
  • Propose recommendations for data selection, further analysis, or future experimental needs.
By the end of the internship, the candidate will have: 
  • Developed a structured and critical overview of experimental integral data relevant to an advanced nuclear project.
  • Gained hands-on experience with experimental databases and neutronics calculations.
  • Contributed directly to an innovative research and development effort.
  • Built strong foundations for further work in integral data evaluation, reactor modelling, and experimental techniques.

About you:

  • Master’s-level student (or final-year undergraduate) in nuclear engineering, physics, ora relatedfield.
  • You are passionate about neutronics andwilling to merge existing knowledge into the Thorizon reactors.
  • Strong analytical skills and ability to synthesize complex technical information.
  • Familiarity with neutronics key concepts,data bases and automation skills (Python) is highly desirable.
  • Excellent communicator (clear is kind) in English both spoken and written. French or Dutch is a plus.
  • Strong organizational and multitasking abilities, with attention to detail and accuracy.
  • You like working in an agile manner and are comfortable at the fast-moving pace of a technological scale-up.  

What you can expect from us:

  • The candidate will be based at the Thorizon Amsterdam office (Energy Transition Campus Amsterdam,Grasweg 31, 1031 HW Amsterdam - The Netherlands).
  • The expected salary conditionsare of 600 €/month.
  • The expected duration of the internshipis of 5-6months starting as of 1st of September 2026 (start date can also be changed depending on the needs of the candidate).

About us

At Thorizon, we’re a passionate team spread across Amsterdam and Lyon, all working together to develop new nuclear power solutions. We design and create frontier technology for Molten Salt Reactors (MSRs).  

Our purpose is to accelerate the availability of clean energy and help solve the climate crisis. 

We are in the development phase and aim to solidify our design through analyses, simulations, experiments, prototyping, and partnerships. At Thorizon, we believe a strongly coupled multidisciplinary technology development requires a culture of full openness and transparency. That’s why we foster values like unity, communication, and support to ensure we grow together as a team while achieving our purpose.  
Key Skills
NeutronicsReactor PhysicsLiterature ReviewData AnalysisPythonTechnical ReportingExperimental Data AssessmentNeutronics Calculations
Categories
EngineeringScience & ResearchEnergy