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The Automatic Calibration Unit in JUNO
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This paper describes the design and construction of the automatic calibration unit (ACU) for the JUNO experiment. The ACU is a fully automated mechanical system. It is capable of deploying multiple radioactive sources, an ultraviolet (UV) laser source, or an auxiliary sensor such as a temperature sensor, one at a time, into the central detector of JUNO along the central axis. It is designed as a primary tool to precisely calibrate the energy scale of detector, aligning timing for the photosensors, and partially monitoring the position-dependent energy scale variations.
Forward citations
Cited by 2 Pith papers
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High-accuracy ultrasonic positioning of calibration sources in the Jiangmen Underground Neutrino Observatory
After in-situ receiver calibration, ultrasonic time-of-flight reconstruction reaches 1.23 cm mean error on the JUNO central axis and a simulated 2.40 cm off-axis positioning uncertainty.
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The calibration house in JUNO
The JUNO calibration house has been installed and tested, maintaining oxygen below 10 ppm and radon below 15 mBq/m3.
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