Modelling of Inner-Shell Scatters in Liquid Xenon, and Flow Based 214Pb Vetos in LUX-ZEPLIN
Modelling of Inner-Shell Scatters in Liquid Xenon, and Flow Based 214Pb Vetos in LUX-ZEPLIN
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20250211152733
- ISBN
- 9798346858089
- DDC
- 530
- 서명/저자
- Modelling of Inner-Shell Scatters in Liquid Xenon, and Flow Based 214Pb Vetos in LUX-ZEPLIN
- 발행사항
- [Sl] : Northwestern University, 2024
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- 형태사항
- 142 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 86-06, Section: B.
- 주기사항
- Advisor: Dahl, Carl E.
- 학위논문주기
- Thesis (Ph.D.)--Northwestern University, 2024.
- 초록/해제
- 요약Liquid Xenon Time Projection Chambers have provided world leading sensitivity to dark matter's interactions with ordinary matter for candidates with masses on the GeV scale. This sensitivity is built on fantastic detector scalability and background event control and characterization. LUX-ZEPLIN (LZ), the largest such detector built to date, demonstrates the need for new models of inner-shell recoils to describe intrinsic decays of unstable xenon isotopes, particularly 127Xe and 124Xe, as well as the continued prominence of 222Rn-related 214Pb backgrounds in dark matter search results. In this work I detail my contributions to the 127Xe inner-shell vacancy models, as well as the underlying measurement with the XELDA detector, input into the first LZ science results. Additionally, I detail a novel method of vetoing 214Pb based on flow-and-ion-drift related correlations with earlier 218Po α decays, resulting in a 66 ± 5% reduction in 214Pb events at a cost of 8.8% exposure loss. Finally, I look at how such flow information, if used as an event veto, will improve LZ's sensitivity to WIMP dark matter interactions, with a ∼ 8% improvement to a standard WIMP search at 1000 live-days.
- 일반주제명
- Physics
- 일반주제명
- Astronomy
- 일반주제명
- Astrophysics
- 키워드
- Dark matter
- 키워드
- Flow tagging
- 키워드
- Radon
- 키워드
- Xenon
- 기타저자
- Northwestern University Physics and Astronomy
- 기본자료저록
- Dissertations Abstracts International. 86-06B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■006m o d
■007cr#unu||||||||
■020 ▼a9798346858089
■035 ▼a(MiAaPQ)AAI31491077
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a530
■1001 ▼aMcLaughlin, Jacob.▼0(orcid)0000-0003-2227-4064
■24510▼aModelling of Inner-Shell Scatters in Liquid Xenon, and Flow Based 214Pb Vetos in LUX-ZEPLIN
■260 ▼a[Sl]▼bNorthwestern University▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a142 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 86-06, Section: B.
■500 ▼aAdvisor: Dahl, Carl E.
■5021 ▼aThesis (Ph.D.)--Northwestern University, 2024.
■520 ▼aLiquid Xenon Time Projection Chambers have provided world leading sensitivity to dark matter's interactions with ordinary matter for candidates with masses on the GeV scale. This sensitivity is built on fantastic detector scalability and background event control and characterization. LUX-ZEPLIN (LZ), the largest such detector built to date, demonstrates the need for new models of inner-shell recoils to describe intrinsic decays of unstable xenon isotopes, particularly 127Xe and 124Xe, as well as the continued prominence of 222Rn-related 214Pb backgrounds in dark matter search results. In this work I detail my contributions to the 127Xe inner-shell vacancy models, as well as the underlying measurement with the XELDA detector, input into the first LZ science results. Additionally, I detail a novel method of vetoing 214Pb based on flow-and-ion-drift related correlations with earlier 218Po α decays, resulting in a 66 ± 5% reduction in 214Pb events at a cost of 8.8% exposure loss. Finally, I look at how such flow information, if used as an event veto, will improve LZ's sensitivity to WIMP dark matter interactions, with a ∼ 8% improvement to a standard WIMP search at 1000 live-days.
■590 ▼aSchool code: 0163.
■650 4▼aPhysics
■650 4▼aAstronomy
■650 4▼aAstrophysics
■653 ▼aDark matter
■653 ▼aFlow tagging
■653 ▼aRadon
■653 ▼aXenon
■690 ▼a0605
■690 ▼a0606
■690 ▼a0596
■71020▼aNorthwestern University▼bPhysics and Astronomy.
■7730 ▼tDissertations Abstracts International▼g86-06B.
■790 ▼a0163
■791 ▼aPh.D.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17163631▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
