Speaker
Description
The SND@LHC (Scattering and Neutrino Detector at the LHC) experiment is designed to perform measurements with high energy neutrinos (350 GeV-10 TeV) produced in proton-proton collisions at the LHC in the forward pseudo-rapidity region 7.2 < $\eta$ < 8.4. It is a compact and stand-alone experiment located 480 m away from the ATLAS interaction point (IP1) in the TI18 underground tunnel, where it is shielded by around 100 m of rock and concrete. The goals of the experiment are study of high energy neutrino interactions, whose energy was not accessible to other LHC experiments, and search for feebly interacting particles. To do so, we use ECC (Emulsion Cloud Chamber) as target and tracking detector. The ECC is a sandwich structure of Nuclear emulsion films and Tungsten plates. The Nuclear emulsion has best spatial resolution (less than 1 $\mu$m) and angular resolution (~ several mrad). Therefore, all three flavors of neutrinos can be identified by the ECC, especially tau neutrino CC event in which flight length of tau lepton is very short (c$\tau$ = 87 $\mu$m). Several emulsion tasks are needed such as ECC assembly, chemical development and scanning etc. in order to observe the neutrino events. After getting tomographic images by emulsion scanning, off-line analysis (FEDRA) of the image data has to be done for track reconstruction and neutrino vertex reconstruction. In this talk, we will introduce these kinds of the emulsion tasks which have been done so far for the SND@LHC experiment.
