نتایج جستجو برای: track detector
تعداد نتایج: 121041 فیلتر نتایج به سال:
The present Note is intended for track-reconstruction, detector-alignment and detector-evaluation groups. Often regarded as a simple problem, track reconstruction can soon become tangled with prohibitive CPU load and unexpectedly large errors. Detector alignment for instance requires that alignment parameters satisfy proper track reconstruction in all events. Tunning however the alignment param...
Track parallelisation of GEANT-based detector simulations, worked out for a parallel computer, is described. Its implementation in a T9000 based TN310 computer (16 processors) is explained in detail. With the help of the shower tracking example Gexam1 we show that the speedup obtained is satisfactory for high energies and enough initial particles. Load balancing policies are discussed.
1 Sponsored by the Bulgarian Science Fund, Grant No.I-801/98. Abstract. Hough Transform is a convenient tool for features extraction from images. In this paper an implementation of Hough Transform is onsidered for automatic track initiation in the surveillance radar space. The need of track initiation arises when there are many moving objects in the sensor surveillance volume and when it is not...
Department of Physics of Molecular Imaging Systems, Institute for Experimental Molecular Imaging, RWTH Aachen University, Aachen, Germany For sub-millimeter PET the precise spatial location of each line of response (LOR) is crucial. Physical misalignments of detector modules, if not properly accounted for, can significantly degrade the spatial resolution. In this work, we investigate the applic...
In this study, calibration process was carried out for deigned new CR-39 nuclear track detector for protons, neutrons and alpha particles separately under the same etching condition. In order to aim this purpose, americium-beryllium standard source (241Am-Be) and Plexiglas phantom for neutron irradiation, brass collimators and americium standard source (241Am) for alpha irradiation and the acce...
چکیده ندارد.
Solid-state nuclear track detectors, such as CR-39, are widely used in physics and in many inertial confinement fusion (ICF) experiments. In the ICF experiments, the particles of interest, such as D(3)He-protons, have ranges of order of the detector thickness. In this case, the dynamic range of the detector can be extended by recording data on both the front and back sides of the detector. High...
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