نتایج جستجو برای: particle detector
تعداد نتایج: 229410 فیلتر نتایج به سال:
Results on the characterization of the elecmcal properties of amorphous silicon-films for the three different growth methods, RF sputtering, PECVD, and LPCVD are reported. The performance of these a-Si films as heterojunctions on high resistivity p-type and n-type crystalline silicon is examined by measuring the noise, leakage current and the alpha particle response of 5 mm diameter detector st...
We describe a start-timing detector for the PHENIX experiment at the relativistic heavy-ion collider RHIC. The role of the detector is to detect a nuclear collision, provide precise time information with an accuracy of 50ps, and determine the collision point along the beam direction with a resolution of a few cm. Technical challenges are that the detector must be operational in a wide particle-...
We propose a new timing error detector for timing tracking loops inside the Rake receiver in spread spectrum systems. Based on a particle filter, this timing error detector jointly tracks the delays of each path of the frequency-selective channels. Instead of using a conventional channel estimator, we have introduced a joint time delay and channel estimator with almost no additional computation...
Efficient charged particle tracking and high momentum resolution are central performance requirements of the CBM Silicon Tracking System (STS). The aim of the ongoing layout studies is to design a highly granular and lowmass detector system which can track up to 1000 charged particles that are typically generated in one central Au+Au collision at 25 GeV/u projectile energy. A low-mass detector ...
I discuss a number of issues which arise when computing confidence limits by frequentist or Bayesian methods. I begin with a reminder why P(hypothesis data) cannot be determined if the only input is the ‘objective’ data. I then discuss confidence intervals, with emphasis on the ‘unified approach’ based on likelihood-ratio ordering, and related methods. A number of issues arise, including condit...
The interaction between an ultrarelativistic particle and a linear array made up of N two-level systems (“AgBr” molecules) is studied by making use of a modified version of the Coleman-Hepp Hamiltonian. Energy-exchange processes between the particle and the molecules are properly taken into account, and the evolution of the total system is calculated exactly both when the array is initially in ...
A model for composite elementary Standard Model (SM) particles based upon magnetically bound vorton pairs, briefly introduced here, predicts the existence of a complete family of magnetically charged particles, as well as their neutral isotopic partners (all counterparts to the SM elementary particles), in which the lowest mass (charged) particle would be an electrically neutral stable lepton, ...
Background: Several landmine detection methods, based on nuclear techniques, have been suggested during the recent years. Neutron energy moderation, neutron-induced gamma emission, neutron and gamma attenuation, and fast neutron backscattering are nuclear-based methods used for landmine detection. The aim of this study is to use backscattered neutron for landmine detection. Materials ...
The level scheme of 51Mn has been investigated using the 28Sis32S ,2a1pd51Mn fusion-evaporation reaction at 125 MeV beam energy. The g rays were detected in the Ge-detector array Gammasphere, which was coupled to the 4p-charged-particle detector Microball and the Neutron Shell for the coincident detection of evaporated particles. Over 100 new g-ray transitions connecting some 50 excited states ...
The RAPID spectrometer (Research with Adaptive Particle Imaging Detectors) for the Cluster mission is an advanced particle detector for the analysis of suprathermal plasma distributions in the energy range from 20–400 keV for electrons, 40 keV–1500 keV (4000 keV) for hydrogen, and 10 keV nucl –1500 keV (4000 keV) for heavier ions. Novel detector concepts in combination with pin-hole acceptance ...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید