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Radiation Hardened LIDAR Sensor: Conceptual Design, Testing, and Performance Evaluation.

Emil T Jonasson1, Christian Kuhlmann1, Chris Wood1

  • 1United Kingdom Atomic Energy Authority, Culham Campus, Abingdon OX14 3DB, UK.

Sensors (Basel, Switzerland)
|December 11, 2025
PubMed
Summary
This summary is machine-generated.

This study introduces a radiation-tolerant LIDAR prototype for robotic applications in high-gamma environments. Initial tests show reliable signal detection, paving the way for safer nuclear decommissioning and fusion power plant maintenance.

Keywords:
GaNLIDARnuclearradiationroboticssensor

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Area of Science:

  • Robotics and Automation
  • Nuclear Engineering
  • Sensor Technology

Background:

  • Robots are essential for hazardous tasks in high-radiation environments like nuclear power plants and decommissioning sites.
  • Standard Light Detection And Ranging (LIDAR) sensors, crucial for robot navigation and mapping, fail under gamma radiation.
  • A need exists for radiation-hardened sensors to enable robotic operations in these critical areas.

Purpose of the Study:

  • To design and test a prototype Light Detection And Ranging (LIDAR) system with enhanced gamma radiation tolerance.
  • To assess the feasibility of using this sensor for robotic applications in nuclear decommissioning and future fusion power plants.
  • To explore novel calibration methods for LIDAR systems in high-dose-rate environments.

Main Methods:

  • A prototype LIDAR transmitter and receiver circuit was designed using components with a target tolerance of up to 1 MGy gamma radiation.
  • Initial laboratory tests evaluated laser transmission and detection reliability.
  • Performance tests with multiple receivers investigated the relationship between receiver separation and time-of-flight measurements.

Main Results:

  • Reliable signal detection was achieved in laboratory tests of the laser transmission and detection concepts.
  • A linear relationship was observed between receiver separation and measured time difference, indicating potential for sensor calibration.
  • The prototype design utilizes components expected to withstand high gamma radiation levels.

Conclusions:

  • The developed LIDAR prototype demonstrates promising capabilities for operation in high-gamma radiation environments.
  • These findings reduce the risks associated with deploying LIDAR systems in nuclear decommissioning, large scientific facilities, and fusion power plants.
  • Further radiation testing is planned to validate long-term deployment feasibility.