Dr. John Hendricks
Consultant
Expertise: Monte Carlo Modelling, Variance Reduction, Method Development
01 / 14 · Introduction
We are expert consultants in the fields of radiation protection, Monte Carlo modelling, radio ecology, retrospective dosimetry, computational dosimetry and data analysis and collection.
We perform calculations and measurements for applications in nuclear engineering, physics, and mathematics. We develop software for computations and the assessment and presentation of data. Operating worldwide, we link businesses with research.
02 / 14 · News
From 1 – 5 June 2026, we will be at the 7th European IRPA Congress in Liverpool, a European meeting of the International Radiation Protection Association. Mauritius Hiller will deliver a talk on Thursday 4 June on the importance of robust Decision Support Systems, and how to support them for countries in the arid climate zone.
irpa2026europe.com/irpa
The 5th International Conference on Dosimetry and its Applications (ICDA-5) takes place in Prague from 7 – 11 June 2026. RadCon’s Simon Rombauer and Mauritius Hiller will present a poster co-authored with Ken Veinot from Y-12 National Security Complex on the Air Gap Effects on the Calibration and Neutron Response of TLD using Monte Carlo Methods.
indico.fjfi.cvut.cz/event/376
These events are opportunities to exchange knowledge, connect with international experts, and support progress in radiation science and safety.
03 / 14 · Expertise
04 / 14 · Expertise
RadCon supports the development, manufacture and operation of advanced reactor concepts, specifically Small Modular Reactors (SMRs), with our expertise in neutronics, steady state calculations, and reactor dynamics.
These advanced reactors produce electricity of up to 300 MWe per module and are suitable for use in both single and multiple-unit plants. They can also combine nuclear energy with alternative sources.
The IAEA, which oversees the international nuclear industry, believes the technology has arrived at “an important milestone”, with there now being a global consensus that it has a vital role to play if the goal of net zero carbon emissions is to be reached. The agency has praised the flexibility and affordability that SMRs offer and believes they are a good option for replacing ageing fossil fuel-fired power plants. It highlights their suitability for remote regions with less developed infrastructure and praises their “enhanced safety performance.”
RadCon supports emerging companies with knowledge related specifically to reactors and to physics more generally. We can offer support by providing criticality and burn-up calculations. We also assess fission products and prepare activation inventories, and assist the developers of reactors by helping to calculate and collate all the data necessary for the application process with national authorities.
05 / 14 · Data
RadCon has developed a Database of Radioecological Parameters for Arid Environments. It contains information on the development, structure, and application of radioecological parameters, emphasizing their role in supporting predictive modelling, environmental impact assessments, and decision-making during emergencies.
The integration of standardized, region-specific, and quality-assured data enhances the reliability of radiological risk assessments and facilitates rapid response planning.
The main objective of the database is to provide the user with so-called Transfer Factors which indicate the amounts of a radionuclide that is transferred from one compartment to the next within a given time. These compartments include, for example, soil, or parts of plants such as their stem, leaf or fruit.
The database is constantly updated with new publications emerging, thus allowing users to access up to date values. It can be browsed below, or via this link. If you would like to use any data from the database, please contact us at mh@radcon-nuclear.com.
06 / 14 · About
RadCon is a Radiation Protection consulting company. It was established in Germany by a small team of professionals with many years of experience in radiation protection, environmental radioactivity, and computational dosimetry.
Drawing on experience built up in different geographical areas, climatic conditions and ecosystems, RadCon has played a key role in national and international projects supported by the European Commission, the US Department of Energy, the IAEA, and other funding bodies.
We are committed to ensuring that future radiation protection projects effectively use the knowledge we have built up and the lessons learned — providing access to reliable, scientifically tested information to help our customers find practical, workable solutions.
We operate independently of any state, public, or international organizations. Our expertise is therefore politically impartial and relies solely on experimental scientific data — so there is no risk of conflicts of interest.
We are ready to share our broad range of knowledge to help and support any organization in need, governmental or private. We cover a broad spectrum of radiation protection services, including:
07 / 14 · Expertise
RadCon’s expertise in Computational Dosimetry plays a vital role in enabling Health Physicists to protect people and the environment. In support of that we provide the Health Physics community with new fundamental and applied research (see the list of publications here).
Using sophisticated radiation transport models, detailed anatomical representations (ICRP Voxel, advanced ICRP 156 pediatric and ICRP 145 adult Mesh-type Reference Computational Phantoms) and cutting-edge computational methods, we precisely estimate radiation doses in even the most challenging environments. This expertise underpins evidence-based decision-making, improves radiation protection programs, and enhances the safety of medical, environmental, research, and industrial applications.
08 / 14 · Expertise
Our consultants have extensive field-work experience, used together with Monte Carlo calculations for retrospective dosimetry:
09 / 14 · Expertise
10 / 14 · Expertise
Radioecology is the study of the effects of radiation and radioactive substances on ecological communities. It is a highly multidisciplinary field that looks at environmental radioactivity — natural or man-made — and its effects on people and the natural environment. It deals with radioactivity as a stressor requiring risk assessment, but also as a tracer of biogeochemical and ecological processes.
11 / 14 · Education
Radioecology is an important part of radiation impact assessments after incidents and accidents, during routine operation, and specifically for planning and implementing environmental remediation during and after the decommissioning of nuclear facilities and waste management.
The study of the spatial and time-dependent behaviour of radionuclides can contribute to a better understanding of more general environmental processes, specifically the behaviour of non-radioactive pollutants.
RadCon has a strong record in lecturing and conducting successful training courses in radioecology in many countries worldwide, resulting in educated radioecologists advancing in their careers.
12 / 14 · Services
» Learn more about our services in Management of Scientific Projects
13 / 14 · Team
We’re passionate about radiation protection — let us know how we can work with you to solve your issues.
Consultant
Expertise: Monte Carlo Modelling, Variance Reduction, Method Development
Managing Director & Consultant
Expertise: Monte Carlo Modelling, Variance Reduction, Retrospective Dosimetry, Computational Dosimetry, Advanced Reactors
Consultant
Expertise: Monte Carlo Modelling, Advanced Reactors
Consultant
Expertise: Radioecology, Modelling, Management
Consultant
Expertise: Radioecology, Genetics
Consultant
Expertise: Reactor Physics, Radiation Protection, Medical Physics
14 / 14 · Contact