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Searching for Sub-µeV Axions With DMRadio
Searching for Sub-µeV Axions With DMRadio
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202103609
- ISBN
- 9798288865633
- DDC
- 530
- 저자명
- Droster, Alex.
- 서명/저자
- Searching for Sub-µeV Axions With DMRadio
- 발행사항
- [Sl] : University of California, Berkeley, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 134 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-01, Section: B.
- 주기사항
- Advisor: van Bibber, Karl.
- 학위논문주기
- Thesis (Ph.D.)--University of California, Berkeley, 2025.
- 초록/해제
- 요약Although astrophysical evidence over the last several decades favors a cosmology in which 85% of the matter of the universe is in the form of "dark matter," the exact particle nature of dark matter remains unknown. Despite its prevalence, directly detecting dark matter has eluded physicists for nearly a century. Central among dark matter candidates is the axion, a particle originally hypothesized to explain the extreme smallness of the angle which violates charge parity symmetry (CP) in the strong force. The axion is also an attractive candidate for low mass dark matter due to a suitable production mechanism in the early universe. Dark Matter Radio 50 Liter (DMRadio-50L) is an experiment that will search for sub-µeV-scale axion dark matter. This region of axion parameter space is particularly compelling because it probes the pre-inflationary axion, thereby offering a unique view into the early universe prior to the moments of inflation. Axions at these masses also emerge naturally out of string theories and theories which seek to unify the four fundamental forces of nature (GUT theories). Additionally, recent developments in cosmic microwave background (CMB) science suggest that the energy scale of inflation may have been much lower than anticipated, implying that Peccei-Quinn symmetry breaking may have happened very early in the development of the universe, naturally leading to a small ma ≲ µeV. However, despite the strong theoretical motivation for pre-inflationary axions, much of the allowable parameter space remains unexplored.DMRadio-50L uses an LC resonator to probe parameter space of the pre-inflationary axion and axion-like particles (ALPs). Although modern axion detectors, or haloscopes, based on microwave cavities are limited by their geometry to search for axions with mass ma ≳ 1 µeV, DMRadio-50L evades this constraint by decoupling the resonator's resonant frequency from its geometry. This dissertation reports the design of DMRadio-50L, which will exclude axions of mass 20 peV ≤ ma ≤ 20 neV (5 kHz ≤ νa ≤ 5 MHz) at axion-photon coupling gaγγ ≳ 5 x 10−15 GeV−1. This work represents an important step forward towards large-scale investigation of the pre-inflationary axion parameter space using the lumped-element method, motivating the development of the next-generation detectors in the DMRadio suite, DMRadio-m3 and DMRadio-GUT.
- 일반주제명
- Physics
- 일반주제명
- Particle physics
- 일반주제명
- Astrophysics
- 일반주제명
- Computational physics
- 키워드
- Axion
- 키워드
- Dark matter
- 키워드
- DMRadio
- 키워드
- Haloscopes
- 기타저자
- University of California, Berkeley Nuclear Engineering
- 기본자료저록
- Dissertations Abstracts International. 87-01B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520260202103609
■006m o d
■007cr#unu||||||||
■020 ▼a9798288865633
■035 ▼a(MiAaPQ)AAI32043062
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a530
■1001 ▼aDroster, Alex.
■24510▼aSearching for Sub-µeV Axions With DMRadio
■260 ▼a[Sl]▼bUniversity of California, Berkeley▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a134 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-01, Section: B.
■500 ▼aAdvisor: van Bibber, Karl.
■5021 ▼aThesis (Ph.D.)--University of California, Berkeley, 2025.
■520 ▼aAlthough astrophysical evidence over the last several decades favors a cosmology in which 85% of the matter of the universe is in the form of "dark matter," the exact particle nature of dark matter remains unknown. Despite its prevalence, directly detecting dark matter has eluded physicists for nearly a century. Central among dark matter candidates is the axion, a particle originally hypothesized to explain the extreme smallness of the angle which violates charge parity symmetry (CP) in the strong force. The axion is also an attractive candidate for low mass dark matter due to a suitable production mechanism in the early universe. Dark Matter Radio 50 Liter (DMRadio-50L) is an experiment that will search for sub-µeV-scale axion dark matter. This region of axion parameter space is particularly compelling because it probes the pre-inflationary axion, thereby offering a unique view into the early universe prior to the moments of inflation. Axions at these masses also emerge naturally out of string theories and theories which seek to unify the four fundamental forces of nature (GUT theories). Additionally, recent developments in cosmic microwave background (CMB) science suggest that the energy scale of inflation may have been much lower than anticipated, implying that Peccei-Quinn symmetry breaking may have happened very early in the development of the universe, naturally leading to a small ma ≲ µeV. However, despite the strong theoretical motivation for pre-inflationary axions, much of the allowable parameter space remains unexplored.DMRadio-50L uses an LC resonator to probe parameter space of the pre-inflationary axion and axion-like particles (ALPs). Although modern axion detectors, or haloscopes, based on microwave cavities are limited by their geometry to search for axions with mass ma ≳ 1 µeV, DMRadio-50L evades this constraint by decoupling the resonator's resonant frequency from its geometry. This dissertation reports the design of DMRadio-50L, which will exclude axions of mass 20 peV ≤ ma ≤ 20 neV (5 kHz ≤ νa ≤ 5 MHz) at axion-photon coupling gaγγ ≳ 5 x 10−15 GeV−1. This work represents an important step forward towards large-scale investigation of the pre-inflationary axion parameter space using the lumped-element method, motivating the development of the next-generation detectors in the DMRadio suite, DMRadio-m3 and DMRadio-GUT.
■590 ▼aSchool code: 0028.
■650 4▼aPhysics
■650 4▼aParticle physics
■650 4▼aAstrophysics
■650 4▼aComputational physics
■653 ▼aAxion
■653 ▼aDark matter
■653 ▼aDMRadio
■653 ▼aMicrowave engineering
■653 ▼aHaloscopes
■690 ▼a0605
■690 ▼a0798
■690 ▼a0596
■690 ▼a0216
■71020▼aUniversity of California, Berkeley▼bNuclear Engineering.
■7730 ▼tDissertations Abstracts International▼g87-01B.
■790 ▼a0028
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17357857▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


