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dc.contributor.advisorMartoff, Charles Jeffrey
dc.creatorGranato, Francesco
dc.date.accessioned2021-08-23T18:21:26Z
dc.date.available2021-08-23T18:21:26Z
dc.date.issued2022
dc.identifier.urihttp://hdl.handle.net/20.500.12613/6907
dc.description.abstractNeutrino physics has been going through rapid developments since the particle was first proposed by Pauli. The observation of neutrino oscillations has prompted an investigation of the issue of neutrino mass, with the "seesaw" mechanism garnering theoretical support. The HUNTER (Heavy Unseen Neutrinos from the Total Energy-momentum Reconstruction) experiment brings together AMO, nuclear physics and high energy physics researchers from Temple University, Houston University, UCLA and Princeton University to develop an apparatus capable of probing the keV-mass range of sterile neutrinos with high precision. The HUNTER detector makes use of the well-established COLTRIMS techniques for the collection of all the decay products of a neutrino-producing decay, and the reconstruction of their initial momenta and energies. Energy and momentum conservation allow then for the reconstruction of the missing neutrino mass.Electrons produced in the decay are guided towards their detector by an optimized set of electrodes paired to a magnetic field to confine their trajectories into spirals. A magnetic shield protects the electron from external stray fields that could alter their trajectories. A thorough study on the main source of background, namely the source scattering of ions, was conducted. As an additional topic, the feasibility of a directional-sensitive dark matter search experiment has been studied. Simple models of galactic dark matter distribution suggest that the motion of the Earth in space might introduce a directional anisotropy in the WIMPs momentum distribution at the Earth. The shape of a WIMP-like recoil in a target material could be be used to extract directional information for the incident WIMP, and thus confirm the anisotropy. The peculiar microphysics of liquid Argon requires thermalization of ionization electrons for a signal to form. To determine if directional information can be extracted, one needs to understand the energy spectrum of the electrons emitted in recoil event. Then, one needs a model to determine the time scale of the thermalization, and the distance to which the electrons travel.
dc.format.extent143 pages
dc.language.isoeng
dc.publisherTemple University. Libraries
dc.relation.ispartofTheses and Dissertations
dc.rightsIN COPYRIGHT- This Rights Statement can be used for an Item that is in copyright. Using this statement implies that the organization making this Item available has determined that the Item is in copyright and either is the rights-holder, has obtained permission from the rights-holder(s) to make their Work(s) available, or makes the Item available under an exception or limitation to copyright (including Fair Use) that entitles it to make the Item available.
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjectParticle physics
dc.subjectColtrims
dc.subjectDark matter
dc.subjectSpectrometer
dc.subjectSterile neutrino
dc.subjectWimp
dc.titleDesign of the electron spectrometer for the HUNTER experiment and timescale of electron thermalization in liquid Argon for directional detection of WIMP dark matter
dc.typeText
dc.type.genreThesis/Dissertation
dc.contributor.committeememberMetz, Andreas
dc.contributor.committeememberMeyers, Peter
dc.contributor.committeememberSurrow, Bernd
dc.description.departmentPhysics
dc.relation.doihttp://dx.doi.org/10.34944/dspace/6889
dc.ada.noteFor Americans with Disabilities Act (ADA) accommodation, including help with reading this content, please contact scholarshare@temple.edu
dc.description.degreePh.D.
dc.identifier.proqst14654
dc.date.updated2021-08-21T10:10:02Z
refterms.dateFOA2021-08-23T18:21:26Z
dc.identifier.filenameGranato_temple_0225E_14654.pdf


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