Cosmic ray 2H/1H flux ratio measurement with the AMS-02 experiment

Detalhes bibliográficos
Autor(a) principal: Lordello, Vitor Diorio
Data de Publicação: 2017
Tipo de documento: Dissertação
Idioma: eng
Título da fonte: Biblioteca Digital de Teses e Dissertações da USP
Texto Completo: http://www.teses.usp.br/teses/disponiveis/76/76132/tde-30012018-163850/
Resumo: The Alpha Magnetic Spectrometer (AMS-02) is a cosmic ray detector operating aboard the International Space Station (ISS) since May 2011. The identification of cosmic ray deuterium and hydrogen particles is the main goal of this work. Using the data collected by the AMS-02 experiment between May 2011 and May 2014 we provide the measurement of the 2H to the 1H ratio between 0.7 and 7 GeV/n. Cosmic rays are mainly composed of hydrogen nuclei. No significant amount of deuterium nuclei is expected to be released from galactic sources since they are destroyed rather than formed in thermonuclear reactions inside stars. As a consequence of their production history, they are part of a class of secondary stable nuclei that provide information on the propagation of cosmic rays in the galaxy. Despite their relevance for propagation studies, very few measurements of deuterium exist above 1 GeV/n, due to the poor isotopic separation capacity of previous experiments. For this reason, the deuterium to hydrogen flux ratio is a very important measurement to be carried out using the data collected by the AMS-02 experiment. The mass and the isotopic composition of cosmic-rays nuclei can be measured by the AMS-02 experiment using measurements of the momentum (provided by the tracker) and velocity of the particles (provided by the Time-of-Flight and the RICH). This analysis is one of the first to be focused on hydrogen isotopic composition with AMS-02 data, and our results are in fair agreement with a similar and independent analysis that has been carried out within the Collaboration.
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spelling Cosmic ray 2H/1H flux ratio measurement with the AMS-02 experimentMedição da razão 2H/1H de fluxo em raios cósmicos com o experimento AMS-02AMS-02AMS-02Astroparticle physicsCosmic-ray deuterium measurementCosmic-ray fluxCosmic-ray isotope separationFísica de astropartículasFluxo de raios cósmicosMedida de deutério nos raios cómicosSeparação de isótopos nos raios cósmicosThe Alpha Magnetic Spectrometer (AMS-02) is a cosmic ray detector operating aboard the International Space Station (ISS) since May 2011. The identification of cosmic ray deuterium and hydrogen particles is the main goal of this work. Using the data collected by the AMS-02 experiment between May 2011 and May 2014 we provide the measurement of the 2H to the 1H ratio between 0.7 and 7 GeV/n. Cosmic rays are mainly composed of hydrogen nuclei. No significant amount of deuterium nuclei is expected to be released from galactic sources since they are destroyed rather than formed in thermonuclear reactions inside stars. As a consequence of their production history, they are part of a class of secondary stable nuclei that provide information on the propagation of cosmic rays in the galaxy. Despite their relevance for propagation studies, very few measurements of deuterium exist above 1 GeV/n, due to the poor isotopic separation capacity of previous experiments. For this reason, the deuterium to hydrogen flux ratio is a very important measurement to be carried out using the data collected by the AMS-02 experiment. The mass and the isotopic composition of cosmic-rays nuclei can be measured by the AMS-02 experiment using measurements of the momentum (provided by the tracker) and velocity of the particles (provided by the Time-of-Flight and the RICH). This analysis is one of the first to be focused on hydrogen isotopic composition with AMS-02 data, and our results are in fair agreement with a similar and independent analysis that has been carried out within the Collaboration.O Espectômetro Magnético Alpha (AMS-02) é um detetor de raios cósmicos operando na Estação Espacial Internacional (ISS) desde maio de 2011. O principal objetivo deste trabalho é a identificação de deutério e hidrogênio nos raios cósmicos. Usando dados coletados pelo experimento AMS-02 entre maio de 2011 e maio de 2014 foi medida a razão entre os fluxos de 2H e 1H entre 0.7 e 7 GeV/n. Raios cósmicos são compostos, principalmente, por núcleos de hidrogênio. Não é esperado que fontes galácticas de raios cósmicos liberem uma quantidade significativa de núcleos de deutério, já que eles são destruidos, em vez de formados, nas reações termonucleares no interior de estrelas. Assim, eles fazem parte de uma classe de partículas secundárias estáveis que fornecem informações acerca da propagação de raios cósmicos na galáxia. Apesar da relevância para o estudo da propagação de raios cósmicos, poucas medidas da sua quantidade acima de 1 GeV/n existem, devido à baixa capacidade de separação de isótopos de prévios experimentos. Por isso a razão entre os fluxos de deutério e hidrogênio é uma importante medida a ser feita com os dados do AMS-02. A massa, e portanto a composição isotópica dos raios cósmicos, pode ser medida pelo AMS-02 a partir das medições de momento (realizada pelo tracker) e velocidade (realizadas pelo ToF e RICH). Essa análise é uma das primeiras a focar na composição isotópica do hidrogênio com dados do AMS-02, e os resultados estão razoavelmente em acordo com análises independendes semelhantes realizadas na colaboração AMS.Biblioteca Digitais de Teses e Dissertações da USPVecchi, ManuelaLordello, Vitor Diorio2017-09-26info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://www.teses.usp.br/teses/disponiveis/76/76132/tde-30012018-163850/reponame:Biblioteca Digital de Teses e Dissertações da USPinstname:Universidade de São Paulo (USP)instacron:USPLiberar o conteúdo para acesso público.info:eu-repo/semantics/openAccesseng2018-07-19T20:50:39Zoai:teses.usp.br:tde-30012018-163850Biblioteca Digital de Teses e Dissertaçõeshttp://www.teses.usp.br/PUBhttp://www.teses.usp.br/cgi-bin/mtd2br.plvirginia@if.usp.br|| atendimento@aguia.usp.br||virginia@if.usp.bropendoar:27212018-07-19T20:50:39Biblioteca Digital de Teses e Dissertações da USP - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Cosmic ray 2H/1H flux ratio measurement with the AMS-02 experiment
Medição da razão 2H/1H de fluxo em raios cósmicos com o experimento AMS-02
title Cosmic ray 2H/1H flux ratio measurement with the AMS-02 experiment
spellingShingle Cosmic ray 2H/1H flux ratio measurement with the AMS-02 experiment
Lordello, Vitor Diorio
AMS-02
AMS-02
Astroparticle physics
Cosmic-ray deuterium measurement
Cosmic-ray flux
Cosmic-ray isotope separation
Física de astropartículas
Fluxo de raios cósmicos
Medida de deutério nos raios cómicos
Separação de isótopos nos raios cósmicos
title_short Cosmic ray 2H/1H flux ratio measurement with the AMS-02 experiment
title_full Cosmic ray 2H/1H flux ratio measurement with the AMS-02 experiment
title_fullStr Cosmic ray 2H/1H flux ratio measurement with the AMS-02 experiment
title_full_unstemmed Cosmic ray 2H/1H flux ratio measurement with the AMS-02 experiment
title_sort Cosmic ray 2H/1H flux ratio measurement with the AMS-02 experiment
author Lordello, Vitor Diorio
author_facet Lordello, Vitor Diorio
author_role author
dc.contributor.none.fl_str_mv Vecchi, Manuela
dc.contributor.author.fl_str_mv Lordello, Vitor Diorio
dc.subject.por.fl_str_mv AMS-02
AMS-02
Astroparticle physics
Cosmic-ray deuterium measurement
Cosmic-ray flux
Cosmic-ray isotope separation
Física de astropartículas
Fluxo de raios cósmicos
Medida de deutério nos raios cómicos
Separação de isótopos nos raios cósmicos
topic AMS-02
AMS-02
Astroparticle physics
Cosmic-ray deuterium measurement
Cosmic-ray flux
Cosmic-ray isotope separation
Física de astropartículas
Fluxo de raios cósmicos
Medida de deutério nos raios cómicos
Separação de isótopos nos raios cósmicos
description The Alpha Magnetic Spectrometer (AMS-02) is a cosmic ray detector operating aboard the International Space Station (ISS) since May 2011. The identification of cosmic ray deuterium and hydrogen particles is the main goal of this work. Using the data collected by the AMS-02 experiment between May 2011 and May 2014 we provide the measurement of the 2H to the 1H ratio between 0.7 and 7 GeV/n. Cosmic rays are mainly composed of hydrogen nuclei. No significant amount of deuterium nuclei is expected to be released from galactic sources since they are destroyed rather than formed in thermonuclear reactions inside stars. As a consequence of their production history, they are part of a class of secondary stable nuclei that provide information on the propagation of cosmic rays in the galaxy. Despite their relevance for propagation studies, very few measurements of deuterium exist above 1 GeV/n, due to the poor isotopic separation capacity of previous experiments. For this reason, the deuterium to hydrogen flux ratio is a very important measurement to be carried out using the data collected by the AMS-02 experiment. The mass and the isotopic composition of cosmic-rays nuclei can be measured by the AMS-02 experiment using measurements of the momentum (provided by the tracker) and velocity of the particles (provided by the Time-of-Flight and the RICH). This analysis is one of the first to be focused on hydrogen isotopic composition with AMS-02 data, and our results are in fair agreement with a similar and independent analysis that has been carried out within the Collaboration.
publishDate 2017
dc.date.none.fl_str_mv 2017-09-26
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.teses.usp.br/teses/disponiveis/76/76132/tde-30012018-163850/
url http://www.teses.usp.br/teses/disponiveis/76/76132/tde-30012018-163850/
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv
dc.rights.driver.fl_str_mv Liberar o conteúdo para acesso público.
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Liberar o conteúdo para acesso público.
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.coverage.none.fl_str_mv
dc.publisher.none.fl_str_mv Biblioteca Digitais de Teses e Dissertações da USP
publisher.none.fl_str_mv Biblioteca Digitais de Teses e Dissertações da USP
dc.source.none.fl_str_mv
reponame:Biblioteca Digital de Teses e Dissertações da USP
instname:Universidade de São Paulo (USP)
instacron:USP
instname_str Universidade de São Paulo (USP)
instacron_str USP
institution USP
reponame_str Biblioteca Digital de Teses e Dissertações da USP
collection Biblioteca Digital de Teses e Dissertações da USP
repository.name.fl_str_mv Biblioteca Digital de Teses e Dissertações da USP - Universidade de São Paulo (USP)
repository.mail.fl_str_mv virginia@if.usp.br|| atendimento@aguia.usp.br||virginia@if.usp.br
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