Scintillators with Silicon Photomultiplier Readout for Timing Measurements in Hadronic Showers
| Autor: | C. Soldner |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: |
Physics
Physics - Instrumentation and Detectors Photon 010308 nuclear & particles physics business.industry Physics::Instrumentation and Detectors Instrumentation Detector FOS: Physical sciences Instrumentation and Detectors (physics.ins-det) Scintillator 01 natural sciences 030218 nuclear medicine & medical imaging Calorimeter 03 medical and health sciences 0302 clinical medicine Silicon photomultiplier Optics 0103 physical sciences Calibration Direct coupling High Energy Physics::Experiment Detectors and Experimental Techniques business |
| Popis: | The advent of silicon photomultipliers has enabled big advances in high energy physics instrumentation, for example by allowing the construction of extremely granular hadronic calorimeters with photon sensors integrated into small scintillator tiles. Direct coupling of the SiPM to the plastic scintillator, without use of wavelength shifting fibers, provides a fast detector response, making such devices well suited for precise timing measurements. We have constructed a setup consisting of 15 such scintillator tiles read out with fast digitizers with deep buffers to measure the time structure of signals in hadronic calorimeters. Specialized data reconstruction algorithms that allow the determination of the arrival time of individual photons by a detailed analysis of the recorded waveforms and that provide automatic calibration of the gain of the photon sensor, have been developed. We will discuss the experimental apparatus and the data analysis. In addition, we will report on first results obtained in a hadronic calorimeter with tungsten absorbers, providing important constraints on the time development of hadronic showers for the development of simulation models. Comment: To appear in the conference record of the IEEE Nuclear Science Symposium and Medical Imaging Conference, Valencia, Spain, October 2011 |
| Databáze: | OpenAIRE |
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