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.
Results
Showing 1 to 17 of 17 for “"scintillation light"”.
-
Characterization of Scintillation Light in Large Liquid Argon Detectors and the Implications for Proton Decay Searches
… two year lifespan. Liquid argon scin- tillation light is still an active subject of study with open questions about the impact of scattering and absorption in such a large detector. Here, we combine ProtoDUNE-SP cosmic-ray data with its large photon detector coverage and large drift volume to …
-
Liquid Argon scintillation light quenching due to Nitrogen impurities : measurements performed for the MicroBooNE vertical slice test
… were performed. The first examines the number of scintillation light components, for although theory explains two components, other groups have seen evidence for a third. The second measures late light quenching as a function of nitrogen gas impurity concentration in the liquid argon. We nd …
-
CRYOGENIC DETECTION OF SCINTILLATION LIGHT WITH LARGE AREA SIPM ARRAYS FOR NEXT GENERATION NEUTRINO AND DARK MATTER EXPERIMENTS
The collection of scintillation light is a fundamental technique for the detection of neutrino or dark matter interactions in cryogenic environments. The continuous development and deeper understanding of such technique are fundamental to advance the results in these fields. In the present work, a …
-
The Light Response of the XENON100 Time Projection Chamber and the Measurements of the Optical Parameters with the Xenon Scintillation Light
… XENON100 is a detector responding to the scintillation of xenon and the work of this thesis will mainly focus on the light response of the detector. Chapter 1 describes the evidences for dark matter and some of the detection methods, roughly divided by the indirect and the direct …
-
Attenuation of the scintillation light in liquid argon and investigation of the double beta decay of ⁷⁶Ge into excited states of ⁷⁶Se in the GERDA experiment
… as an additional background veto using the scintillation light that is created when energy is deposited in LAr. The signal signature of the decay into excited states can be enhanced with the application of the LAr veto, however, for that the efficiency of the LAr veto needs to be determined. …
-
Development of a liquid argon purity monitoring system
… atoms, producing ionization electrons and prompt scintillation light. The ionization electrons drift through the LAr volume in a uniform electric field and produce a signal at the anode. The scintillation light is used to determine the drift coordinate of an event, which allows for 3D …
-
Neutron electric dipole moment and dressed spin
… absorption between UCN and 3He atoms will emit scintillation light in the superfluid 4He depending on the angle between nuclear spins of two particles. Consequently, the neutron precession frequency can be derived by the scintillation light amplitude. Furthermore, the 3He precession frequency …
-
Development of dense scintillating hard fluoride glasses for the electromagnetic caorimeter of the proposed compact muon solenoid
… measured. To record the time distribution of scintillation light, an extension to the single-photon method, has been developed, it is optimised for materials with low light output. An alternative acquisition system which used a Multi-Channel Scaler has been critically evaluated for this …
-
Dark Matter Detection with the Dark Matter Time Projection Chamber Collaboration
… are designed to produce both a charge signal and scintillation light (detected by PMTs and CCDs) when an ionization event occurs within the volume of the detector. In this thesis, we present the results of a study conducted to characterize the radial decrease in image intensity (termed …
-
Simulating Properties of Scintillating Integrated Fibers as Conformal Radiation Detectors
… fiber detectors. By sensing and processing scintillation light within the fiber itself, integrated fibers could be woven into a fabric to make a rugged, conformal radiation detector. Such a fabric could be wearable or easily deployable in the field, and useful in searches for radiation …
-
PREDICTING THE SENSITIVITY OF A BERYLLIUM/SCINTILLATOR FUSION NEUTRON DETECTOR COMBINING EXPERIMENTAL METHODS AND MONTE CARLO MODELS
… beta energy deposition to absolute measured scintillation light output as a function of detector bias, reflective material, scintillator thickness, and solid angle subtended by the scintillator on the face of the PMT. Output signals were measured from thin plastic scintillator using NIST …
-
Sterile neutrinos in cold climates
… of wavelength-shifting coatings for liquid argon scintillation light detection; testing and deployment of high-voltage surge arrestors to protect TPC field cages; and software development for optical and TPC simulation and reconstruction. Part III presents a search for sterile neutrinos using the …
-
Detection of Solar Neutrino Absorption and Study of TPB and Acrylic Fluorescence in DEAP-3600
… materials that can affect the detection of the scintillation light. DEAP-3600 can use the LAr data collected for the dark matter search to attempt to make the first observation of 8B solar neutrino charged-current (CC) neutrino interactions on 40Ar, which will be referred to as neutrino …
-
Digital Waveform Acquisition and Adaptive Collimation Methods for SPECT
… digitization captures time samples of the scintillation light pulse, allowing for the inclusion of more data into ML estimation than in conventional systems. Methods for including this data, as well as strategies for handling the increased computational load were developed. The potential …
-
Characterization of electroluminescence signals from nuclear recoil events in the dual-phase argon Time Projection Chamber of the Red experiment with Convolutional Autoencoders
… scattering events by detecting both prompt scintillation light and ionization charge, with the latter measured through delayed electroluminescence signals. While conventional WIMP searches focus on masses around hundreds of GeV/c2, interest has recently expanded to lighter WIMPs, down to 1 …
-
3D Scintillator Detector Quenching Characterization For Scanning Proton Beams
… of scintillators for dose linearity. The EDSE scintillation model was explored which relates the scintillation light emission to the energy deposition by secondary electrons.</p> <p>This project explored key improvements necessary for volumetric scintillator-based detector and demonstrated the …
-
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
… in LXe creates both ionization electrons 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 …