Commissioning, characterisation and temperature stabilisation of a 22000 channel SiPM-on-tile hadron calorimeter system

With the successful construction and operation of a highly granular hadron calorimeter system, featuring approx. 22000 individually read out SiPM-on-tile channels, CALICE collaboration has set next milestone in proving scalability concept for future high energy linear collider experiment. For this large sample photosensors new approach quality control was required to sufficiently characterise monitor device parameters both, test bench in-situ beam data. In presence temperature fluctuations during operation, it possible stabilise SiPM responses with fully automated adjustment bias voltage based on frequent measurements, thanks excellent parameter uniformity devices. This contribution presents results studies commissioning phase reports about system performance experience compensation at level operation.