This fully funded PhD opportunity at the University of Bristol, offered through the Nuclear Threat Reduction Network (NTR-Net) Centre for Doctoral Partnership, focuses on the prediction, monitoring, and management of distributed detector systems, with an emphasis on their evolution, fatigue, and performance. The NTR-Net is a collaborative initiative supported by AWE, the Ministry of Defence, and the Home Office, aiming to strengthen the UK's nuclear threat reduction capabilities and develop skilled researchers in this critical field.

The research project addresses the long-term performance and degradation of radiation monitoring systems, such as radiation portal monitors, which are deployed at key locations across the UK for national nuclear security. Many of these systems have been operational for over a decade and are subject to environmental stressors including extreme weather, electrical and thermal cycling, mechanical fatigue, and ageing. The project aims to identify and quantify the specific contributions of these factors to system degradation, which have not been fully understood to date.

Through a combination of numerical material modeling and physical hardware experiments, the PhD researcher will baseline the performance evolution of currently deployed monitoring systems. The focus will be on a subsystem relevant to the UK's unique operational environment, particularly considering the impact of humidity and temperature due to the port-based nature of many installations. The ultimate goal is to develop a toolkit that enables stakeholders to predict performance changes, plan for system replacement or renewal, and optimize routine testing and tuning in collaboration with system vendors.

The project is fully funded, covering tuition fees and providing a tax-free stipend at the UKRI rate (£20,780 for 2025/26). Due to the terms of the NTR-Net funding, applicants may be subject to special nationality requirements, and standard rules regarding intellectual property and publications will apply.

Applicants should possess a first degree in physics or a closely related subject, typically at the UK upper second-class honours level or higher, or hold a relevant postgraduate master's qualification. International candidates should review the University of Bristol's country-specific requirements. Proficiency in English (Profile F) is required for non-native speakers.

The application deadline is 2 April 2026, with interviews for shortlisted candidates by the end of April 2026. The latest possible start date is the end of September 2026, with earlier starts possible by agreement. To apply, submit an academic CV, a personal statement outlining your motivation for PhD research (maximum two pages), and transcripts of qualifying degrees via the University of Bristol's postgraduate research portal. Informal enquiries about the project can be directed to Prof. Tom B. Scott ([email protected]), and application queries to the Bristol Physics Graduate School ([email protected]).