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Recent Advances of the Engineering Prototype of the CALICE Analog Hadron Calorimeter

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 نشر من قبل Mark Terwort
 تاريخ النشر 2012
  مجال البحث فيزياء
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The CALICE collaboration is developing an engineering prototype of an analog hadron calorimeter for a future linear collider detector. The prototype has to prove the feasibility of building a realistic detector with fully integrated front-end electronics. The performance goals are driven by the requirement of high jet energy resolution and the measurement of the details of the shower development. The signals are sampled by small scintillating plastic tiles that are read out by silicon photomultipliers. The ASICs are integrated into the calorimeter layers and are optimized for minimal power consumption. For the photodetector calibration an LED system is integrated into each of the detector channels. In this report the status and performance of the realized module are presented. In particular, results from timing measurements are discussed, as well as tests of the calibration system. The new module has also been used in the DESY test beam environment and first results from the electron beam tests are reported.



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190 - Mark Terwort 2011
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The CALICE collaboration is currently developing engineering prototypes of electromagnetic and hadronic calorimeters for a future linear collider detector. This detector is designed to be used in particle-flow based event reconstruction. In particula r, the calorimeters are optimized for the individual reconstruction and separation of electromagnetic and hadronic showers. They are conceived as sampling calorimeters with tungsten and steel absorbers, respectively. Two electromagnetic calorimeters are being developed, one with silicon-based active layers and one based on scintillator strips that are read out by MPPCs, allowing highly granular readout. The analog hadron calorimeter is based on scintillating tiles that are also read out individually by silicon photomultipliers. The multi-channel, auto-triggered front-end chips are integrated into the active layers of the calorimeters and are designed for minimal power consumption (power pulsing). The goal of the construction of these prototypes is to demonstrate the feasibility of building and operating detectors with fully integrated front-end electronics. The concept and engineering status of these prototypes are reported here.
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