Civilian unmanned aerial systems can pose a serious threat to the civilian population. For this reason, the development of an assistance system to counter these threats is the scope of an ongoing ...research project. Its goal is to detect inbound drones and to provide the user with a comprehensive situation analysis and risk assessment. The focus of this paper is a software defined radio based implementation of a radio frequency analysis, which is capable of eavesdropping on the drone's radio signals, in order to gather information for the assistance system. In the paper the implementation for one exemplary drone system, based on the Pixhawk autopilot and the MAVLink communication protocol, is proposed and the results of the initial tests are presented.
We report upon the performance of an analog hadron calorimeter prototype, where plastic scintillator tiles are read out with wavelength-shifting fibers coupled to avalanche photodiodes. This ...prototype configuration has been tested using a positron beam at DESY with energies between 1 and 6
GeV. We present different detector calibration methods, show measurements for noise, linearity, and energy resolution and discuss gain monitoring with an LED system. The results are in good agreement with our simulation studies and previous measurements using silicon photomultiplier readout.
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GEOZS, IJS, IMTLJ, KILJ, KISLJ, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UL, UM, UPCLJ, UPUK
23.
Artificial neural networks based age estimation of electronic devices Kunze, S.; Poeschl, R.; Faschingbauer, A. ...
2017 International Conference on Optimization of Electrical and Electronic Equipment (OPTIM) & 2017 Intl Aegean Conference on Electrical Machines and Power Electronics (ACEMP)
Conference Proceeding
Predictive maintenance is a promising approach but upgrading existing machinery is expensive and difficult, thus replacing the machines is economically not worthwhile. A simple solution to upgrade ...existing machinery is required. With the proposed age estimation of electronic devices a first step towards such a system is taken. A test setup for accelerated aging of switched mode power supplies as well as a software defined radio based system for data acquisition is proposed. The necessary steps to transfer the measured samples into frequency domain and to prepare the data for evaluation with an artificial neural network are discussed. Two experiments are performed with the proposed test setup and neural network architecture, yielding promising results. With the two experiments the validity of the proposed approach is shown and further research is encouraged. Finally, a number of future steps are discussed.
We study the potential of future lepton colliders to probe violation of the
CP symmetry in the top quark sector. In certain extensions of the Standard
Model, such as the two-Higgs-doublet model ...(2HDM), sizeable anomalous top quark
dipole moments can arise, that may be revealed by a precise measurement of top
quark pair production. We present results from detailed Monte Carlo studies for
the ILC at 500~\GeV{} and CLIC at 380~\gev{} and use parton-level simulations
to explore the potential of high-energy operation. We find that precise
measurements in $e^+e^- \rightarrow t\bar{t}$ production with subsequent decay
to lepton plus jets final states can provide sufficient sensitivity to detect
Higgs-boson-induced CP violation in a viable two-Higgs-doublet model. The
potential of a linear $e^+e^-$ collider to detect CP-violating electric and
weak dipole form factors of the top quark exceeds the prospects of the HL-LHC
by over an order of magnitude.
The ILD Si-W ECAL is a sampling calorimeter with tungsten absorber and highly segmented silicon layers for the International Large Detector (ILD), one of the two detector concepts for the ...International Linear Collider. SKIROC2 is an ASIC for the ILD Si-WECAL. To investigate the issues found in prototype detectors, we prepared dedicated ASIC evaluation boards with either BGA sockets or directly soldered SKIROC2. We report a performance study with the evaluation boards, including signal-to-noise ratio and TDC performance with comparing SKIROC2 and an updated version, SKIROC2A.
We study the potential of future lepton colliders to probe violation of the CP symmetry in the top quark sector. In certain extensions of the Standard Model, such as the two-Higgs-doublet model ...(2HDM), sizeable anomalous top quark dipole moments can arise, that may be revealed by a precise measurement of top quark pair production. We present results from detailed Monte Carlo studies for the ILC at 500~\GeV{} and CLIC at 380~\gev{} and use parton-level simulations to explore the potential of high-energy operation. We find that precise measurements in \(e^+e^- \rightarrow t\bar{t}\) production with subsequent decay to lepton plus jets final states can provide sufficient sensitivity to detect Higgs-boson-induced CP violation in a viable two-Higgs-doublet model. The potential of a linear \(e^+e^-\) collider to detect CP-violating electric and weak dipole form factors of the top quark exceeds the prospects of the HL-LHC by over an order of magnitude.
Journal of Instrumentation, 12 (2017) C07013 Calorimeters with silicon detectors have many unique features and are
proposed for several world-leading experiments. We discuss the tests of the
first ...three 18x18 cm$^2$ layers segmented into 1024 pixels of the technological
prototype of the silicon-tungsten electromagnetic calorimeter for a future
$e^+e^-$ collider. The tests have beem performed in November 2015 at CERN SPS
beam line.
This document discusses for the first time the experimental prospects on the
measurement of cross section and the forward-backward asymmetry in
$e^{-}e^{+}\rightarrow c\bar{c}$ collisions at 250 GeV ...at the International
Linear Collider operating polarised beams. The cross section will be normalised
to the total hadronic cross section. We discuss the results for an analysis
assuming the integrated luminosity of 2000 fb$^{-1}$ foreseen in the baseline
project. The measurement requires determining the charge of both jets
identified as originated by a $c$-quark. The charge measurement is optimally
performed using the precise micro-vertex detector of the detector ILD and the
charged kaon identification provided by the $\frac{dE}{dx}$ information of its
TPC. Thanks to the beam polarisation, we can separate the four independent
chirality combinations of the electroweak couplings, enhancing in this way the
sensitivity to new physics effects. We show that due to the unprecedented
precision that will be achieved by the ILC for these observables, the ILC will
be sensitive to the existence of beyond the standard model Randal Sundrum
resonances of several tens of TeV.
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