Demonstrating the of a CMOS pixel detector for a future neutron dosimeter
| Autor: | Abdel-Mjid Nourreddine, The-Duc Le, M. Vanstalle, Stephane Higueret, M. Trocmé, Daniel Husson |
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| Rok vydání: | 2012 |
| Předmět: |
Physics
Nuclear and High Energy Physics CMOS sensor 010308 nuclear & particles physics business.industry Detector Tracking (particle physics) 7. Clean energy 01 natural sciences Charged particle Neutron temperature 030218 nuclear medicine & medical imaging 03 medical and health sciences 0302 clinical medicine CMOS 0103 physical sciences Neutron source Optoelectronics Neutron Nuclear Experiment business Instrumentation |
| Zdroj: | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 662:45-48 |
| ISSN: | 0168-9002 |
| DOI: | 10.1016/j.nima.2011.09.053 |
| Popis: | The RaMsEs group (Radioprotection et Mesures Environnementales) is working on a new compact device for operational neutron dosimetry. The electronic part of the detector is made of an integrated active pixel sensor, originally designed for tracking in particle physics. This device has useful features, including a high detection efficiency for charged particles, a good radiation resistance, a high readout speed and a low power consumption. Moreover, because of the thinness of the active layer, these CMOS sensors have low sensitivity to γ - rays , which is an attractive feature for neutron issues. In order to determine the γ response of the sensor, measurements have been carried out with a γ source of 60Co (1.17 MeV and 1.33 MeV). Other experiments have been performed with a fast neutron source of AmBe. We demonstrate the good discrimination between recoil protons from fast neutrons and from γ - background . Our results show that with an appropriate threshold, most γ - rays that generate photoelectrons can be removed from detection. |
| Databáze: | OpenAIRE |
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