Hamburg 2016 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 70: Kalorimeter II
T 70.5: Vortrag
Mittwoch, 2. März 2016, 17:45–18:00, VMP6 HS E
Calibration of the hadronic calorimeter prototype for a future lepton collider — •Sarah Schröder und Erika Garutti für die CALICE-D Kollaboration — Institute for Experimental Physics, Hamburg University, Luruper Chaussee 149, D-22761 Hamburg, Germany
The CALICE AHCAL technological prototype is a hadronic calorimeter prototype for a future e+e− - collider. It is designed as a sampling calorimeter alternating steel absorber plates and active readout layers, segmented in single plastic scintillator tiles of 3 × 3 × 0.3 cm3 volume. Each tile is individually coupled to a silicon photomultiplier, read out by a dedicated ASIC with energy measurement and time stamping capability. The high granularity is meant to enable imaging and separation of single showers, for a Particle Flow approach to the jet energy measurement. The prototype aims to establish a scalable solution for an ILC detector. A total of 3456 calorimeter cells need to be inter-calibrated, for this the response to muons is used. The calibration procedure will be presented and the statistic and systematic uncertainties will be discussed, which have a direct impact on the constant term of the calorimeter energy resolution.
Additionally, the MIP yield in number of fired SiPM pixels can be compared between the muon calibration and a test bench calibrations obtained using a Sr source on the single tiles before the assembly of the calorimeter. A good correlation would enable pre-calibation of the single channels on the test bench to be portable to the assemble detector. This hypothesis is checked with the present work.