Low-Background Monitoring Cameras for the Daya Bay Antineutrino Detectors

TL;DR

This paper details the design, integration, and performance of low-background monitoring cameras used in the Daya Bay neutrino detectors, ensuring safety and reliability under strict radioactivity constraints.

Contribution

It introduces a specialized camera system optimized for low-background environments in neutrino detectors, addressing unique design and operational challenges.

Findings

Cameras meet safety and reliability standards.

System operates effectively within radioactivity constraints.

Provides continuous monitoring during detector operation.

Abstract

The Daya Bay Reactor Neutrino Experiment is designed to measure the neutrino mixing angle theta13 to world-leading precision. The experiment deploys identical antineutrino detectors at distances of 400-1900m from six reactors in Daya Bay, China. Each detector incorporates two general-purpose monitoring cameras to ensure their safe construction, transportation and operation. The cameras must meet usage goals while satisfying stringent constraints on radioactivity, materials compatibility, interference and reliability. This article describes the system design, integration, operation and performance.