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T: Fachverband Teilchenphysik

T 73: Calorimeters I

T 73.4: Vortrag

Donnerstag, 19. März 2026, 17:00–17:15, KH 01.012

Shower Direction Reconstruction with the SHiP High-Granularity ECAL — •Sebastian Ritter, Volker Büscher, Rainer Wanke, Matei Climescu, and Claudia Delogu — Johannes-Gutenberg Universität, Mainz

The SHiP experiment at CERN targets the hidden sector by, among others, searching for neutral long-lived particles (LLPs) produced in a high-intensity beam dump. To reconstruct LLP decays into photons, the experiment requires a pointing electromagnetic calorimeter (ECAL). In this talk, test-beam results of the SHiP ECAL prototype are presented.

Using SPS electron beams in the 10*288 GeV range, we measure the transverse and longitudinal shower development to reconstruct the shower direction and extract the pointing resolution based on the calorimeter response and put it into perspective with the physics requirements. Comparisons with GEANT4 simulations are outlined.

We conclude with a status update on preparations for calorimeter construction in Mainz and the installation of the detector in the SHiP experiment at the upgraded beam dump facility.

Keywords: calorimetry; pointing; SHiP; particle identification; future detectors