Volume 340 - The 39th International Conference on High Energy Physics (ICHEP2018) - Posters
Performance of the KOTO Sampling Calorimeter
J.L. Kim* on behalf of the KOTO collaboration
*corresponding author
Full text: pdf
Published on: August 02, 2019
Abstract
The purpose of the J-PARC KOTO experiment is to search for the $K_{L} \rightarrow \pi^{0}\nu\bar{\nu}$ decay which is sensitive to new physics. A main feature of the signal is two photons and nothing else observed in a hermetic detector system. Thus, it is important to detect all decay particles from the $K_{L}$ decays. A 5.5-m long cylindrical Lead/Scintillator sandwich calorimeter surrounds the $K_{L}$ decay region to detect extra photons. The detection efficiency of the sampling calorimeter was designed to meet the background elimination capability. We present the performance of the sampling calorimeter using tagged photons from the $K_{L} \rightarrow 3\pi^{0}$ decay. In particular, the performance of a new sampling calorimeter installed in 2016 is reported.
DOI: https://doi.org/10.22323/1.340.0786
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