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 22 for “"time projection chamber (TPC)"”.
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A self-triggered readout for a time projection chamber
A self-triggering readout for a time projection chamber (TPC) is presented, with applications to novel forms of data acquisition for high energy physics application. The construction and initial testing of the readout electronics are described, as well as the readout implementation in a prototype …
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Ultraviolet laser calibration of drift chambers
… laser as a track calibration source in drift chambers, and specifically in a small time projection chamber (TPC). Drift chambers such as TPCs reconstruct the trajectories of charged particles by amplifying and collecting electrons produced by ionization of gas atoms with which the target …
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Radioactive source measurements in a liquid xenon time projection chamber
… source measurements in a liquid xenon time projection chamber (TPC).
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Point by point gain calibration of the Dark Matter Time Projection Chamber
… dark matter remains a mystery. The Dark Matter Time Projection Chamber (DMTPC) is a directional detection experiment that will be able to measure the energy, length, and direction of nuclear recoil tracks induced by incoming weakly interacting massive particles (WIMPs). In this thesis I analyze …
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A study of medium induced jet modificaiton at the relativistic heavy ion collider via two particle correlations and identified jet spectra
… their specific ionisation measured in the STAR Time Projection Chamber (TPC). This thesis contains one of the first implementations of using direct photons to tag jets in heavy ion collisions. An attempt was made to extract a trigger sample rich in direct photons from neutral triggers. The …
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A determination of the formation rate of muonic hydrogen molecules in the MuCap experiment
… disappearance rate, l_-, in a gaseous hydrogen time projection chamber (TPC) and compares it to the free mu^+ decay rate, l_+, to obtain the mu p singlet capture rate L_S. The motivation is a determination of the pseudoscalar form factor, g_P, of the proton, which relates quadratically to L_S. A …
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Longitudinal double spin asymmetry for inclusive jet production in polarized proton-proton collisions at [square root of] s = 200 GeV
… The main detector components used were the time-projection chamber (TPC), barrel-electromagnetic calorimeter (BEMC), and beam-beam counters (BBC). Comparison of the asymmetry with theoretical calculations, which utilized deep inelastic scattering results, places constraints on the gluon …
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Fission fragment mass distributions and total kinetic energy release of 235-uranium and 238-uranium in neutron-induced fission at intermediate and fast neutron energies LA-UR-15-28829
… the way for precision experiments such as the Time Projection Chamber (TPC) for fission cross section measurements and the Spectrometer for Ion Determination in Fission (SPIDER) for precision mass yields. The dissertation discusses the motivations and underlying theory behind the study of …
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MEASUREMENTS OF TRANSVERSE SPIN DEPENDENT DI-PION AZIMUTHAL CORRELATION ASYMMETRY AND UNPOLARIZED DI-PION CROSS-SECTION IN PROTON-PROTON COLLISIONS AT A CENTER-OF-MASS ENERGY OF 200 GeV AT STAR
… were collected at the STAR experiment. The STAR Time Projection Chamber (TPC), Barrel Electromagnetic Calorimeter (BEMC), and Time-of-Flight Detector (TOF) were used in conjunction to measure outgoing particle energy, tracking, and identification.
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Fission fragment mass distributions and total kinetic energy release of 235-uranium and 238-uranium in neutron-induced fission at intermediate and fast neutron energies LA-UR-15-28829
… the way for precision experiments such as the Time Projection Chamber (TPC) for fission cross section measurements and the Spectrometer for Ion Determination in Fission (SPIDER) for precision mass yields. The dissertation discusses the motivations and underlying theory behind the study of …
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A measurement of the rate of muon capture in an ultra-pure protium gas time projection chamber
… protium gas to a precision of 15 ppm using a time projection chamber (TPC). Combined with precise knowledge of the rate of free muon decay, this determines the capture rate for the mu-p atom in the singlet hyperfine state, L_S, with a precision of 1%. The experimental conditions suppress …
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Background studies for DarkSide Detectors
… The DarkSide-50 experiment used a dual-phase Time Projection Chamber (TPC) with liquid argon (LAr) as the DM target. The next-generation DM detector, DarkSide-20k, will have multiple tons of liquid argon in its TPC for dark matter searches. It is expected to achieve sufficient sensitivity to …
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Construction and Testing of a Portable Time Projection Chamber for Fast Neutron Detection
… an investigation to build a one-person portable Time Projection Chamber (TPC) for the directional detection of a source of spontaneous fission neutrons, capitalizing on the relative motion to build algorithms for rapidly locating the source of neutrons. A triple mesh avalanche setup is studied to …
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Ion backdrift minimisation in a GEM-based TPC readout
… tracking detector of the linear collider is a time projection chamber (TPC) operated in a magnetic field of 4 T. TPCs have been successfully employed in many experiments before, for example in ALEPH and DELPHI at LEP. In these detectors, anode wires provided the gas amplification in the TPC's …
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Simulation studies for a high resolution time projection chamber at the international linear collider
… out for each subdetector. A high resolution Time Projection Chamber (TPC) with gas amplification based on micro pattern gas detectors, is one of the options for the main tracking system at the ILC. In the present thesis a detailed simulation tool to study the performance of a TPC was …
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Comprehensive Study of Identified Hadron Spectra, π± , K± and p(p̄) in PbPb Collisions at √sNN= 5.36 TeV with the ALICE Detector at CERN
… yields by employing information from the Time Projection Chamber (TPC) and Time of Flight (TOF) detectors, enabling robust particle species separation over a broad range of transverse momenta (pT ) and collision centralities. Exploiting the high-stat dataset from the LHC Run 3, high …
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The Light Response of the XENON100 Time Projection Chamber and the Measurements of the Optical Parameters with the Xenon Scintillation Light
… the target liquid xenon mass to 61 kg with a 100 times reduction in background rate enabling a large increase in sensitivity to WIMP- nucleon interaction cross-section. To-date, the most stringent limit on this cross-section over a wide range of WIMP masses have been obtained with XENON100. …
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Resolution studies of a GEM-based TPC
… the ILC. In three of these detector concepts a time projection chamber (TPC) is foreseen as the main tracking device. A TPC allows the measurement of several hundred points per track, providing a very good tracking efficiency. With only 3% of a radiation length in the barrel region, the amount …
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Development of an Experimental Setup to Measure the Radiopurity of Argon from Urania and Aria
… fiducial mass dual-phase Liquid Argon (LAr) Time Projection Chamber (TPC) for direct DM detection, currently under construction at Hall C of Laboratori Nazionali del Gran Sasso (LNGS), Italy. The experiment aims to achieve a background-free search for WIMPs within the mass range of 0.1 TeV to …
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The XENON100 Dark Matter Experiment: Design, Construction, Calibration and 2010 Search Results with Improved Measurement of the Scintillation Response of Liquid Xenon to Low-Energy Nuclear Recoils
… and scintillation light. In a dual-phase LXe time projection chamber (TPC) the ionization electrons are drifted and extracted into the gas phase where they are accelerated to amplify the charge signal into a proportional scintillation signal. These two signals allow the three-dimensional …
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