Nuclear emulsion tasks in the SND@LHC experiment; [SND@LHC 실험에서의 원자핵건판 작업]

Abstract

The SND@LHC experiment aims to perform measurements of high energy neutrinos (350 GeV-10 TeV) with the forward pseudo-rapidity region (7.2 < η < 8.4) not accessible to other LHC experiments so far, and also to search for feebly interacting particles produced in pp collisions at the LHC. To do so, we use ECC as target and tracking detector, where the emulsion cloud chamber (ECC) is a sandwich structure of Nuclear emulsion films and Tungsten plates. Since Nuclear emulsion has best spatial resolution less than 1 µm and angular resolution with several mrad, all three flavors of neutrinos can be identified and measurements of time and energy are possible together with electronic detectors such as SciFi and Muon detector. In this paper, we will introduce whole process of the Nuclear emulsion tasks such as ECC target assembly, chemical development, scanning and event analysis including the current status of the experiment. © 2025 Korean Physical Society. All rights reserved.