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Shining Lights: Measurement of the 8B Solar Neutrino Flux With the SNO+ Detector and Research and Development Toward Next-Generation Optical Neutrino Experiments
Shining Lights: Measurement of the 8B Solar Neutrino Flux With the SNO+ Detector and Resea...
Shining Lights: Measurement of the 8B Solar Neutrino Flux With the SNO+ Detector and Research and Development Toward Next-Generation Optical Neutrino Experiments

Detailed Information

자료유형  
 학위논문 서양
최종처리일시  
20250211152736
ISBN  
9798384455677
DDC  
593.7
저자명  
Smiley, Max.
서명/저자  
Shining Lights: Measurement of the 8B Solar Neutrino Flux With the SNO+ Detector and Research and Development Toward Next-Generation Optical Neutrino Experiments
발행사항  
[Sl] : University of California, Berkeley, 2024
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2024
형태사항  
244 p
주기사항  
Source: Dissertations Abstracts International, Volume: 86-03, Section: B.
주기사항  
Advisor: Orebi Gann, Gabriel.
학위논문주기  
Thesis (Ph.D.)--University of California, Berkeley, 2024.
초록/해제  
요약This dissertation chronicles the role of optical photon-based detection technologies in the past, present, and future of neutrino physics. The initial chapters summarize the history of the field, following chapters explaining key areas of current research. The focus splits then splits, first covering studies with the current-generation, kiloton-scale SNO+ experiment, which has operated with significant amounts of liquid scintillator as its target since 2020. The next sections highlight work undertaken toward the development of a new paradigm known as "hybrid" detection, which aims to benefit from the two optical light emission mechanisms, Cherenkov radiation and scintillation, currently drawn on separately in today's experiments.For SNO+, the experiment is described and this work explores the first demonstrations of α and instrumental background rejection on scintillator data, performed using likelihood-ratio-based classification with hit timing. These demonstrations provide powerful tools for a broad range of physics analyses in SNO+. Additionally, an analysis to determine the 8B solar neutrino flux is performed on two datasets, one from when the SNO+ detector was only partially filled with liquid scintillator for an extended period of time due to the COVID-19 pandemic, and one from when the detector was completely full with the final scintillator cocktail for a period of over a year. The measured flux in both periods, [5.13+1.29−1.11(stat.)+0.45−0.53(syst.)]x106 cm−2 s−1 and [5.74+0.84−0.77(stat.)]x106 cm−2 s−1 respectively, is consistent with theoretical predictions from leading Standard Solar Models. This gives confidence in the understanding of SNO+'s operations in this period and adds to the family of measurements made of this flux around the community.Subsequent discussion introduces the hybrid paradigm and outlines the areas where this technology is maturing. This dissertation presents key explorations into the physics potential at large-scales of this technology using well-motivated modeling and reconstruction for the first time. The potential for neutrinoless double beta decay and CNO solar neutrino flux measurements are examined, with capabilities akin to or exceeding state of the art experiments in a range of scenarios. Also presented is the particle identification capability of the novel scintillating medium water-based liquid scintillator based on lab-measured timing and light yield properties, with substantial rejection power identified between α and β signals. These explorations provide a confirmation of the possibilities for hybrid detection and help pave the way for concrete realizations of these technologies at larger scales.
일반주제명  
Particle physics
일반주제명  
Nuclear physics
일반주제명  
Molecular physics
일반주제명  
Quantum physics
키워드  
Hybrid detection
키워드  
Neutrino flux
키워드  
Optical detection
키워드  
Particle identification
키워드  
Scintillator
키워드  
Solar neutrino
기타저자  
University of California, Berkeley Physics
기본자료저록  
Dissertations Abstracts International. 86-03B.
전자적 위치 및 접속  
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MARC

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■1001  ▼aSmiley,  Max.
■24510▼aShining  Lights:  Measurement  of  the  8B  Solar  Neutrino  Flux  With  the  SNO+  Detector  and  Research  and  Development  Toward  Next-Generation  Optical  Neutrino  Experiments
■260    ▼a[Sl]▼bUniversity  of  California,  Berkeley▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a244  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  86-03,  Section:  B.
■500    ▼aAdvisor:  Orebi  Gann,  Gabriel.
■5021  ▼aThesis  (Ph.D.)--University  of  California,  Berkeley,  2024.
■520    ▼aThis  dissertation  chronicles  the  role  of  optical  photon-based  detection  technologies  in  the  past,  present,  and  future  of  neutrino  physics.  The  initial  chapters  summarize  the  history  of  the  field,  following  chapters  explaining  key  areas  of  current  research.  The  focus  splits  then  splits,  first  covering  studies  with  the  current-generation,  kiloton-scale  SNO+  experiment,  which  has  operated  with  significant  amounts  of  liquid  scintillator  as  its  target  since  2020.  The  next  sections  highlight  work  undertaken  toward  the  development  of  a  new  paradigm  known  as  "hybrid"  detection,  which  aims  to  benefit  from  the  two  optical  light  emission  mechanisms,  Cherenkov  radiation  and  scintillation,  currently  drawn  on  separately  in  today's  experiments.For  SNO+,  the  experiment  is  described  and  this  work  explores  the  first  demonstrations  of  α  and  instrumental  background  rejection  on  scintillator  data,  performed  using  likelihood-ratio-based  classification  with  hit  timing.  These  demonstrations  provide  powerful  tools  for  a  broad  range  of  physics  analyses  in  SNO+.  Additionally,  an  analysis  to  determine  the  8B  solar  neutrino  flux  is  performed  on  two  datasets,  one  from  when  the  SNO+  detector  was  only  partially  filled  with  liquid  scintillator  for  an  extended  period  of  time  due  to  the  COVID-19  pandemic,  and  one  from  when  the  detector  was  completely  full  with  the  final  scintillator  cocktail  for  a  period  of  over  a  year.  The  measured  flux  in  both  periods,  [5.13+1.29−1.11(stat.)+0.45−0.53(syst.)]x106  cm−2  s−1  and  [5.74+0.84−0.77(stat.)]x106  cm−2  s−1  respectively,  is  consistent  with  theoretical  predictions  from  leading  Standard  Solar  Models.  This  gives  confidence  in  the  understanding  of  SNO+'s  operations  in  this  period  and  adds  to  the  family  of  measurements  made  of  this  flux  around  the  community.Subsequent  discussion  introduces  the  hybrid  paradigm  and  outlines  the  areas  where  this  technology  is  maturing.  This  dissertation  presents  key  explorations  into  the  physics  potential  at  large-scales  of  this  technology  using  well-motivated  modeling  and  reconstruction  for  the  first  time.  The  potential  for  neutrinoless  double  beta  decay  and  CNO  solar  neutrino  flux  measurements  are  examined,  with  capabilities  akin  to  or  exceeding  state  of  the  art  experiments  in  a  range  of  scenarios.  Also  presented  is  the  particle  identification  capability  of  the  novel  scintillating  medium  water-based  liquid  scintillator  based  on  lab-measured  timing  and  light  yield  properties,  with  substantial  rejection  power  identified  between  α  and  β  signals.  These  explorations  provide  a  confirmation  of  the  possibilities  for  hybrid  detection  and  help  pave  the  way  for  concrete  realizations  of  these  technologies  at  larger  scales.
■590    ▼aSchool  code:  0028.
■650  4▼aParticle  physics
■650  4▼aNuclear  physics
■650  4▼aMolecular  physics
■650  4▼aQuantum  physics
■653    ▼aHybrid  detection
■653    ▼aNeutrino  flux
■653    ▼aOptical  detection
■653    ▼aParticle  identification
■653    ▼aScintillator
■653    ▼aSolar  neutrino
■690    ▼a0756
■690    ▼a0798
■690    ▼a0599
■690    ▼a0609
■71020▼aUniversity  of  California,  Berkeley▼bPhysics.
■7730  ▼tDissertations  Abstracts  International▼g86-03B.
■790    ▼a0028
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17163654▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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