Improved x-ray detection and particle identification with avalanche photodiodes.

Autor: Diepold M; Max Planck Institute of Quantum Optics, 85748 Garching, Germany., Fernandes LM; LIBPhys, Physics Department, Universidade de Coimbra, 3004-516 Coimbra, Portugal., Machado J; Laboratório de Instrumentação, Engenharia Biomédica e Física da Radiação (LIBPhys-UNL) e Departamento de Física da Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa, Monte da Caparica, 2892-516 Caparica, Portugal., Amaro P; Laboratório de Instrumentação, Engenharia Biomédica e Física da Radiação (LIBPhys-UNL) e Departamento de Física da Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa, Monte da Caparica, 2892-516 Caparica, Portugal., Abdou-Ahmed M; Institut für Strahlwerkzeuge, Universität Stuttgart, 70569 Stuttgart, Germany., Amaro FD; LIBPhys, Physics Department, Universidade de Coimbra, 3004-516 Coimbra, Portugal., Antognini A; Institute for Particle Physics, ETH Zurich, 8093 Zurich, Switzerland., Biraben F; Laboratoire Kastler Brossel, UPMC-Sorbonne Universités, CNRS, ENS-PSL Research University, Collège de France, 4 place Jussieu, case 74, 75005 Paris, France., Chen TL; Physics Department, National Tsing Hua University, Hsinchu 300, Taiwan., Covita DS; i3N, Universidade de Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal., Dax AJ; Paul Scherrer Institute, 5232 Villigen-PSI, Switzerland., Franke B; Max Planck Institute of Quantum Optics, 85748 Garching, Germany., Galtier S; Laboratoire Kastler Brossel, UPMC-Sorbonne Universités, CNRS, ENS-PSL Research University, Collège de France, 4 place Jussieu, case 74, 75005 Paris, France., Gouvea AL; LIBPhys, Physics Department, Universidade de Coimbra, 3004-516 Coimbra, Portugal., Götzfried J; Max Planck Institute of Quantum Optics, 85748 Garching, Germany., Graf T; Institut für Strahlwerkzeuge, Universität Stuttgart, 70569 Stuttgart, Germany., Hänsch TW; Max Planck Institute of Quantum Optics, 85748 Garching, Germany., Hildebrandt M; Paul Scherrer Institute, 5232 Villigen-PSI, Switzerland., Indelicato P; Laboratoire Kastler Brossel, UPMC-Sorbonne Universités, CNRS, ENS-PSL Research University, Collège de France, 4 place Jussieu, case 74, 75005 Paris, France., Julien L; Laboratoire Kastler Brossel, UPMC-Sorbonne Universités, CNRS, ENS-PSL Research University, Collège de France, 4 place Jussieu, case 74, 75005 Paris, France., Kirch K; Institute for Particle Physics, ETH Zurich, 8093 Zurich, Switzerland., Knecht A; Paul Scherrer Institute, 5232 Villigen-PSI, Switzerland., Kottmann F; Institute for Particle Physics, ETH Zurich, 8093 Zurich, Switzerland., Krauth JJ; Max Planck Institute of Quantum Optics, 85748 Garching, Germany., Liu YW; Physics Department, National Tsing Hua University, Hsinchu 300, Taiwan., Monteiro CM; LIBPhys, Physics Department, Universidade de Coimbra, 3004-516 Coimbra, Portugal., Mulhauser F; Max Planck Institute of Quantum Optics, 85748 Garching, Germany., Naar B; Institute for Particle Physics, ETH Zurich, 8093 Zurich, Switzerland., Nebel T; Max Planck Institute of Quantum Optics, 85748 Garching, Germany., Nez F; Laboratoire Kastler Brossel, UPMC-Sorbonne Universités, CNRS, ENS-PSL Research University, Collège de France, 4 place Jussieu, case 74, 75005 Paris, France., Santos JP; Laboratório de Instrumentação, Engenharia Biomédica e Física da Radiação (LIBPhys-UNL) e Departamento de Física da Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa, Monte da Caparica, 2892-516 Caparica, Portugal., dos Santos JM; LIBPhys, Physics Department, Universidade de Coimbra, 3004-516 Coimbra, Portugal., Schuhmann K; Institute for Particle Physics, ETH Zurich, 8093 Zurich, Switzerland., Szabo CI; Laboratoire Kastler Brossel, UPMC-Sorbonne Universités, CNRS, ENS-PSL Research University, Collège de France, 4 place Jussieu, case 74, 75005 Paris, France., Taqqu D; Institute for Particle Physics, ETH Zurich, 8093 Zurich, Switzerland., Veloso JF; i3N, Universidade de Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal., Voss A; Institut für Strahlwerkzeuge, Universität Stuttgart, 70569 Stuttgart, Germany., Weichelt B; Institut für Strahlwerkzeuge, Universität Stuttgart, 70569 Stuttgart, Germany., Pohl R; Max Planck Institute of Quantum Optics, 85748 Garching, Germany.
Jazyk: angličtina
Zdroj: The Review of scientific instruments [Rev Sci Instrum] 2015 May; Vol. 86 (5), pp. 053102.
DOI: 10.1063/1.4921195
Abstrakt: Avalanche photodiodes are commonly used as detectors for low energy x-rays. In this work, we report on a fitting technique used to account for different detector responses resulting from photoabsorption in the various avalanche photodiode layers. The use of this technique results in an improvement of the energy resolution at 8.2 keV by up to a factor of 2 and corrects the timing information by up to 25 ns to account for space dependent electron drift time. In addition, this waveform analysis is used for particle identification, e.g., to distinguish between x-rays and MeV electrons in our experiment.
Databáze: MEDLINE