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 44 for “"Particle Identification"”.
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Upgrading particle identification and searching for leptophobic bosons at GlueX
… was the design and implementation of upgraded particle identification (PID) for the 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 …
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Neutrino interaction vertex reconstruction and particle identification in the MicroBooNE detector
… neutrino interaction vertex reconstruction and particle identification (PID) in the MicroBooNE detector. The detector comprises a liquid argon time-projection chamber (LArTPC) with a light-collection system, permitting precise tracking of neutrino interaction final states. MicroBooNE's primary …
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Particle Identification with the ND280 Fine Grained Detectors for the T2K Experiment
… thesis is the development of an algorithm for identification of particles (protons, electrons, muons and pions) with trajectories contained within the Fine Grained Detectors of the T2K (Tokai-to-Kamioka) experiment. This is achieved by constructing a distribution that compares the distance and …
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Convolutional neural networks and photonic crystals for particle identification at high energy collider experiments
… been established as an effective way to identify particles in high energy physics experiments. Future increases in collision rate and luminosity make limitations of both the particle identification (PID) algorithm and the Cherenkov radiators apparent. These two challenges are addressed in this …
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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 described. Data recorded during SPS charged particle beam tests using a 6.25 ns time gate show a reduction of up to a factor of four in asynchronous detector noise compared to the original 25ns readout. A time-walk correction based on the time-over- threshold is proposed. Using the LHCb …
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Machine learning for particle identification & deep generative models towards fast simulations for the Alice Transition Radiation Detector at CERN
… learning techniques, towards certain aspects of particle physics. Its two main aims: particle identification and high energy physics detector simulations are pertinent to research avenues pursued by physicists working with the ALICE (A Large Ion Collider Experiment) Transition Radiation Detector …
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Measurement of Single Positive Pion Production in Neutrino Neutral Current Interactions in the ND280 Detector and Particle Identification with the Fine Grained Detector at T2K
… ( (NCS +)). I also present a method to identify particles stopping in the Fine Grained Detectors (FGDs). An introductory description of neutrino physics, as well as of the T2K experiment and the ND280 tracker system are included for completeness. Other important contributions to the development …
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The laser mirror alignment system for the LHCb RICH detectors
… of the LHCb experiment relies upon excellent particle identification. The central particle identification detectors for the LHCb experiment are the Ring Imaging Cherenkov (RICH) detectors which are reliant upon their optics being well aligned. The optical specifications for the second RICH …
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Analysis of ρº (Neutral Rho) Decay from Ultra-Peripheral Collisions in Lead-Lead Interactions at ALICE
… provided. Ultra-peripheral collision physics and particle identification for rho meson analysis are discussed. The ALICE trigger system is outline. The results of rho meson analysis using AliRoot is shown, including uses of the electromagnetic calorimeter for pion identification.
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A deep convolutional neural network approach for biomedical applications.
… of colon polyps classification as well as single particle identification in radiation therapy.
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Measurement of Neutral Mesons in p-Pb collisions at √sNN = 8.16TeV with the ALICE detector
… extraction. This method uses the tracking and particle identification capabilities of the central barrel detectors of ALICE. Signal extracted down to 0.3 GeV/c and 0.7 GeV/c for π 0 and η respectively. The resulting spectra are presented and systematic uncertainties have been evaluated. A …
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Machine learning techniques for calorimeter cluster calibration of the CMS particle flow algorithm.
… the energies of charged and neutral hadrons. The Particle Flow (PF) algorithm integrates information from various CMS sub-detectors to reconstruct and identify all particles produced in proton collisions. Photons and neural hadrons are reconstructed using PF element energy clusters. A proper …
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Machine learning techniques for calorimeter cluster calibration of the CMS particle flow algorithm.
… the energies of charged and neutral hadrons. The Particle Flow (PF) algorithm integrates information from various CMS sub-detectors to reconstruct and identify all particles produced in proton collisions. Photons and neural hadrons are reconstructed using PF element energy clusters. A proper …
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Sensitivity Models for [Beta]+/EC Discovery in Large-Volume Scintillation Detectors
… for background discrimination, specifically 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 …
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High energy photoproduction of rho and phi vector mesons
… broad band neutral beam. Forward going two particle final states were detected in a multiparticle spectrometer consistIng of two analyzing magnets, a multiwire-proportional-chamber tracking system and a particle identification system. Recoil protons and target fragments were observed in a …
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Precision measurement of electron and positron flux in cosmic rays with the AMS-02 Detector
… can address a series of astrophysics and particle physics questions. This thesis presents an analysis of electron and positron flux from 0.5 GeV to 1 TeV using the first 30 months of data taking( over 41 billion events), with the AMS-02 detector on the International Space Station(ISS) …
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Commissioning the DIRC Detector and Searching for Axion-like Particles at GlueX
… detector, was proposed to upgrade the particle identification capability of the GlueX experiment, which aims to perform quantitative tests of Quantum Chromodynamics in the nonperturbative regime by searching for and studying hybrid mesons. This thesis describes the construction, …
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A study of tau identification with the CMS detector at the LHC
In this thesis I explore the identification of [tau] leptons from simulated reconstructed data that will be collected by the Compact Muon Solenoid (CMS) detector on the Large Hadron Collider (LHC) at CERN. The two components of particle identification, efficiencies of [tau] identification from …
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Production of C, N and O fragments in the interaction of 12C with 12C at an incident energy of 200 MeV.
… (BCD). The standard AE-E technique was used for particle identification which allowed good separation of different isotopes of the emitted fragments with Z > 3. The BCD could only resolve charge of different fragments. Energy spectra of the isotopes of C, N, and O indicate that at forward angles …
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Measurement of Exclusive Photo-Production of K+ Σ*- Quasi-Free off Neutrons In Deuterium
… detector calibration and developing a new particle identification method and event selection, a very clean data sample with high signal-to-background ratio was obtained with little data loss. This enables us to obtain results agreeing with previous published data and greatly extending the …
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