研究目的
To mitigate the cosmic ray background in the MicroBooNE and SBND detectors, and to improve the statistical significance of the physics measurements by tagging and identifying cosmic ray particles crossing the detectors' volumes.
研究成果
The CRT system meets the design requirements for accurately identifying crossing muons in both position and time with respect to events inside the LArTPCs, with a spatial resolution of 1.8 cm and a timing resolution of 1 ns. The tagging efficiency was measured to be greater than 95% across the entire surface of each module.
研究不足
The relatively shallow depth of the detectors' location exposes them to a continuous flux of background cosmic ray particles, which can be falsely identified as part of the event of interest.
1：Experimental Design and Method Selection:
The CRT system uses scintillation modules to detect cosmic ray muons, measuring their time and coordinates relative to internal events in the neutrino detector.
2：Sample Selection and Data Sources:
Cosmic muons crossing the detectors' volumes are used as samples.
3：List of Experimental Equipment and Materials:
Scintillator modules, silicon photomultipliers (SiPMs), front-end electronics boards (FEBs), and wavelength shifting (WLS) fibers.
4：Experimental Procedures and Operational Workflow:
Modules are tested for proper operation, including efficiency of cosmic muon detection and sensor response.
5：Data Analysis Methods:
The position of a particle hitting the strip is reconstructed by measuring the relative intensities registered by the SiPMs.
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