Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 80 for “"Cherenkov"”.
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Testing of GdCl3 Doping in Water Cherenkov Antineutrino Detectors
… neutron and neutrino detection using water Cherenkov detectors loaded with gadolinium has been proposed for potential application in both large and small volume detectors. In this thesis, work performed to determine the effect on transparency resulting from use of GdCl3 in stainless steel …
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A search for heavy leptons using a differential Cherenkov counter
… experiment used a high resolution differential Cherenkov counter to identify known beam particles and place upper limits on the abundance of other particles in the beam. The details of the design and performance of this Cherenkov counter are given. Heavy leptons of mass near the K meson mass …
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Remote detection of fissile material : Cherenkov counters for gamma detection
… from linear electron accelerators. Water Cherenkov Detectors (WCD) were selected because of their transportability, scalability, and an inherent energy threshold. The main objective of this thesis was to design a large-size WCD capable of detecting gamma rays and to demonstrate particle …
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The building and testing of a gas Cherenkov counter for OHIPS
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Physics, 1995.
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Novel techniques for sub-nanosecond time-resolved Ring Image Cherenkov photon detection
… challenge to the LHCb detector. The Ring-Imaging Cherenkov (RICH) detectors are an integral component in LHCb particle identification that will see a degradation in performance under high luminosity conditions. However, it has been shown that the introduction of time resolution on the order of 100 …
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High energy femtosecond fiber laser at 1018 nm and high power Cherenkov radiation generation
… fiber laser system generating 4 W of femtosecond Cherenkov radiation at that wavelength was built. The characteristics of the Cherenkov radiation were well studied.
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A Dark Matter line search using 3D-modeling of Cherenkov showers below 10 TeV with VERITAS
… V ERITAS, is a telescope array that detects Cherenkov radiation. Theory predicts that DM particles annihilate into, e.g., a γγ pair and create a distinctive energy spectrum when detected by such telescopes, e.i., a monoenergetic line at the same energy as the particle mass. This so called …
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TeV-Gamma-Emission des Supernova-Überrestes Cassiopeia A : Erster Nachweis mit dem HEGRA-Cherenkov-Teleskop-System
Mit dem stereoskopischen Cherenkov-Teleskop-System der HEGRA-Kollaboration wurde erstmalig TeV-Gamma-Emission des Supernova-Überrestes Cassiopeia A nachgewiesen. Die Beobachtungen wurden in den Sommermonaten der Jahre 1997 bis 1999 mit einer Beobachtungszeit von 232 Stunden durchgeführt. Das Signal …
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Absolute Energiekalibration der abbildenden Cherenkov-Teleskope des H.E.S.S. Experiments und Ergebnisse erster Beobachtungen des Supernova-Überrests RX J1713.7-3946
… betreibt in Namibia ein System von 4 abbildenden Cherenkov-Teleskopen, die Cherenkov-Licht aus Luftschauern nachweisen, welche von Teilchen aus der kosmischen Strahlung induziert werden. Für diese Teleskope wurde mit Komponenten aus der Automatisierungsindustrie ein Antriebskonzept entwickelt und …
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Sub-nanosecond Cherenkov photon detection for LHCb particle identification in high-occupancy conditions and semiconductor tracking for muon scattering tomography
… is presented in the context of the Ring-Imaging Cherenkov (RICH) detectors. The application of a time gate in the FPGA of the digital readout board for the Upgrade Ia photon detector, which is being installed for LHC Run 3, is described. Data recorded during SPS charged particle beam tests using …
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Convolutional neural networks and photonic crystals for particle identification at high energy collider experiments
… particle identification (PID) algorithm and the Cherenkov radiators apparent. These two challenges are addressed in this thesis. In the first part, a convolutional neural network (CNN) approach to particle identification in LHCb RICH is introduced. Changes in the LHCb computing infrastructure …
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Simulating the EUSO-SPB2 balloon flight train with Lagrangian mechanics
… telescopes; a fluorescence telescope and a Cherenkov telescope. These telescopes have a 0.1\degree pointing resolution requirement. The telescope of interest is the on-board Cherenkov telescope that rotates above/below the Earth's limb to observe extensive air showers and tau neutrinos …
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Sensitivity of an expanded inclusive search for MiniBooNE-like excess in MicroBooNE data
… Some particles are too low velocity to generate Cherenkov radiation in a MiniBooNE-like detector. Therefore, MiniBooNE-like cuts were used to search for the specific topology of one Cherenkov-visible shower and zero Cherenkov-visible muon tracks to simulate the MicroBooNE Monte Carlo coming out …
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Photoproduction of pi�� mesons from He3 with 340 MeV bremsstrahlung
… the pion decay was detected with a lead glass Cherenkov counter. A coincidence between a semiconductor detector and the Cherenkov counter triggered an oscilloscope on which all pulses were then displayed and photographed. These photographs constitute the experimental data."
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Dynamics of finite momentum Bose polarons
… description of the system, emission of Cherenkov phonons, and a sound-like dispersion of the system. This phase transition manifests in several ways during real-time dynamics of the system and showcases a rich interplay between polaronic physics and Cherenkov physics. One key signature, …
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Sensitivity Models for [Beta]+/EC Discovery in Large-Volume Scintillation Detectors
… particle identification based on counting Cherenkov photons. We find that discrimination between [Beta] and [Beta] particles is readily possible in experiments run at the 1.25 MeV energy scale and also see evidence for the possibility of distinguishing between [Beta]+ and [Beta]- particles …
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Metamaterial structures for Wakefield acceleration and high power microwave generation
… and simulated. The novel phenomenon of reversed Cherenkov radiation has been found to enhance the beam-wave interaction in metamaterials. A metallic wagon wheel metamaterial structure was designed and built for use in an experiment at the Argonne Wakefield Accelerator (AWA) Facility. On the …
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Monte Carlo Method for Calorimetric NRF Cargo Screening
… The approach places integrating calorimetric Cherenkov detectors at a back-scattered angle which will eliminate much of the background typically found in a transmitted spectra. Cherenkov detectors will replace the HPGe detectors in effort to decrease the low energy background. We present a …
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The Boer-Mulders and Cahn Effects: Azimuthal Modulations in the Spin-Independent Sidis Cross Section at Hermes
… identification algorithm for the Ring Imaging Cherenkov (RICH) detector. The EVT event-level algorithm is presented and now is the primary method used at Hermes.
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Upgrading particle identification and searching for leptophobic bosons at GlueX
… GLUEX strangeness program. The development of a Cherenkov detector known as a DIRC (Detection of Internally Reflected Cherenkov light) is presented. The design begins with a DIRC configuration implemented as a prototype for the SuperB experiment, and modifications to this design are made based on …
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