| Autor: |
Alexander Akindinov, Petr Nomokonov, Sergey Zaporozhets, Vladislav Manko, Iouri Sibiriak, Igor Rufanov, Mikhail Ippolitov, Valery Lebedev, Nikolai Gorbunov, Alexander Vodopianov |
| Rok vydání: |
2016 |
| Předmět: |
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| Zdroj: |
Proceedings of International Conference on New Photo-detectors — PoS(PhotoDet2015). |
| Popis: |
Time resolution improvement of the electromagnetic calorimeter PHOS (CERN/ALICE experiment) is discussed. The existing PHOS detection channel consists of a scintillating crystal of PbWO4 viewed by an avalanche photo diode (APD) HAMAMATSU S8864-55(S8148) which is coupled to a low noise charge sensitive preamplifier. In order to improve the PHOS timing resolution of the detecting channel it is proposed to add one more photodetector - a silicon photo multiplier (SiPM) to the current APD. APD signal is used for energy measurements and SiPM provides timing information. In this study, we have investigated the properties of the detection channel with the additional SiPM MPPC Hamamatsu S12572 with different pixel size. Laboratory tests and beam test results are presented. We discuss energy and time resolutions of detection channels with two very different photodetectors. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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