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2 results on '"Pulse shapeanalysis"'

1. Description of current pulses induced by heavy ions in silicon detectors

Author

Pârlog, M., Hamrita, H., Borderie, B., Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire d'Intégration des Systèmes et des Technologies (LIST), Direction de Recherche Technologique (CEA) (DRT (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), FAZIA, Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Intégration des Systèmes et des Technologies (LIST (CEA)), and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Nuclear and High Energy Physics, Dielectric permittivity, 010308 nuclear & particles physics, Carrier pairdissociation, 0103 physical sciences, Pulse shapeanalysis, Silicon detectors, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Current pulse, 010306 general physics, 01 natural sciences, Instrumentation
Abstract

International audience; The polarization of the electron-hole pairs induced by 80 MeV View the MathML source ions in a silicon detector was considered and connected to the relative dielectric permittivity. The dissociation of pairs was supposed to take place with a constant probability in a time unit. The exact coordinate dependence of the modified electric field, inside and outside the ion range, was found as the solution of the one-dimensional Maxwell's equation for the electric field in this inhomogeneous medium. The improvement of the current signal simulation with that time-dependent treatment is encouraging, as compared to a prompt carrier collection in an undisturbed electric field.

Published
2010
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2. The application of pulse shape analysis to in-beam EXOGAM data

Author

H. C. Boston, G DeFrance, Reynold J. Cooper, A. N. Grint, Matthew Richard Dimmock, C. Unsworth, D. C. Oxley, A. J. Boston, P. J. Nolan, Department of Physics, University of Liverpool, Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), R. Bates, K. Mathieson, V. O'Shea, C. Parkes, P. Soler, and EXOGAM

Subjects
Physics, Nuclear and High Energy Physics, business.industry, media_common.quotation_subject, Detector, Gamma ray, Pulse shapeanalysis, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Image chargeasymmetry, Risetime analysis, Method of image charges, Asymmetry, Semiconductor detector, Full width at half maximum, EXOGAM, Optics, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], HPGe, business, Instrumentation, Noise (radio), Beam (structure), media_common
Abstract

The performance of Pulse Shape Analysis (PSA) techniques when applied to EXOGAM has been assessed using data collected in-beam at GANIL (Grand Accelerateur National d’Ions Lourds). Gamma rays from the decay of 94 , 95 Mo were incident upon two EXOGAM clovers and the resulting charge pulses were digitised. Risetime and Image Charge Asymmetry (ICA) techniques have been applied to the data to increase the granularity of the detectors beyond the electrical segmentation of the outer contact. Before PSA the position resolution in the plane of the detector front face is 14.5 mm FWHM. Close to segment boundaries, where the magnitude of induced charge pulses is changing quickly with position, this can be improved to around 10 mm. Further from segment boundaries little improvement is seen due to the magnitude of pulses induced in neighbouring segments being less than that of the detector baseline noise.

Published
2009
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