Speaker
Description
The Analogue Hadron Calorimeter (AHCAL) developed by the CALICE collaboration is a scalable engineering prototype for a detector at future electron-positron energy frontier colliders. It is a sampling calorimeter of steel absorber plates and 3*3 cm^2
plastic scintillator tiles individually read out by silicon photomultipliers (SiPMs) as active material. The front-end ASICS (SPIROC2E) are integrated into the active layers of the calorimeter. They are designed for minimal power consumption by rapidly cycling the power according to the beam structure of a linear accelerator.
After building and operating a large prototype of 38 active layers with nearly 22000 readout channels in 2018, we are now focussing on two further developments:
1) an alternative scintillator geometry with mega-tiles instead of tiles individually wrapped in reflective foil, and
2) an alternative readout ASIC (KLauS), which allows operation both with power cycling and with continuous readout, as required for operation at circular electron-positron colliders.
Both developments have successfully studied in beam tests at DESY in 2021.
This presentation gives an overview of the recent AHCAL beam tests.
