서브메뉴
검색
An Assessment of the Startup Target Quality of Local Helicity Injection Initiated Plasmas via Ohmic Current Drive Sustainment on the Pegasus Spherical Tokamak
An Assessment of the Startup Target Quality of Local Helicity Injection Initiated Plasmas via Ohmic Current Drive Sustainment on the Pegasus Spherical Tokamak
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20250211153128
- ISBN
- 9798346873792
- DDC
- 530
- 서명/저자
- An Assessment of the Startup Target Quality of Local Helicity Injection Initiated Plasmas via Ohmic Current Drive Sustainment on the Pegasus Spherical Tokamak
- 발행사항
- [Sl] : The University of Wisconsin - Madison, 2024
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- 형태사항
- 241 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 86-06, Section: B.
- 주기사항
- Advisor: Diem, Stephanie J.
- 학위논문주기
- Thesis (Ph.D.)--The University of Wisconsin - Madison, 2024.
- 초록/해제
- 요약Future nuclear fusion energy systems based on the spherical tokamak magnetic confinement concept would greatly benefit from solenoid-free startup. Viable solenoid-free startup targets must have readily conservable poloidal flux, low impurities, kinetic profiles that are compatible with the sustainment technique, and attractive MHD properties. A promising solenoid-free startup technique is local helicity injection (LHI), which was further refined on the Pegasus spherical tokamak. This work utilized the coupling and sustainment of LHI initiated plasmas with Ohmic current drive to assess startup plasma viability. Assessment included characterizing how the LHI plasmas evolve across the handoff to Ohmic current drive and comparisons with OH-only plasmas. LHI plasmas were found to readily meet the conditions for viability, producing plasmas with readily conservable flux, sufficiently low impurities, and attractive MHD properties. Furthermore, it was found that LHI plasmas appear compatible with auxiliary heating input power, as simultaneous LHI and OH current drive was able to mitigate losses of kinetic energy suffered at the time of handoff when the techniques were applied alone. These results bode well for the technique's continued development.
- 일반주제명
- Plasma physics
- 일반주제명
- Electromagnetics
- 일반주제명
- Applied physics
- 일반주제명
- Nuclear physics
- 키워드
- Fusion
- 키워드
- Helicity
- 키워드
- Plasma
- 키워드
- Tokamak
- 기타저자
- The University of Wisconsin - Madison Nuclear Engineering & Engineering Physics
- 기본자료저록
- Dissertations Abstracts International. 86-06B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
008250123s2024 us c eng d■001000017165143
■00520250211153128
■006m o d
■007cr#unu||||||||
■020 ▼a9798346873792
■035 ▼a(MiAaPQ)AAI31767208
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a530
■1001 ▼aPierren, Christopher M. B.
■24513▼aAn Assessment of the Startup Target Quality of Local Helicity Injection Initiated Plasmas via Ohmic Current Drive Sustainment on the Pegasus Spherical Tokamak
■260 ▼a[Sl]▼bThe University of Wisconsin - Madison▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a241 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 86-06, Section: B.
■500 ▼aAdvisor: Diem, Stephanie J.
■5021 ▼aThesis (Ph.D.)--The University of Wisconsin - Madison, 2024.
■520 ▼aFuture nuclear fusion energy systems based on the spherical tokamak magnetic confinement concept would greatly benefit from solenoid-free startup. Viable solenoid-free startup targets must have readily conservable poloidal flux, low impurities, kinetic profiles that are compatible with the sustainment technique, and attractive MHD properties. A promising solenoid-free startup technique is local helicity injection (LHI), which was further refined on the Pegasus spherical tokamak. This work utilized the coupling and sustainment of LHI initiated plasmas with Ohmic current drive to assess startup plasma viability. Assessment included characterizing how the LHI plasmas evolve across the handoff to Ohmic current drive and comparisons with OH-only plasmas. LHI plasmas were found to readily meet the conditions for viability, producing plasmas with readily conservable flux, sufficiently low impurities, and attractive MHD properties. Furthermore, it was found that LHI plasmas appear compatible with auxiliary heating input power, as simultaneous LHI and OH current drive was able to mitigate losses of kinetic energy suffered at the time of handoff when the techniques were applied alone. These results bode well for the technique's continued development.
■590 ▼aSchool code: 0262.
■650 4▼aPlasma physics
■650 4▼aElectromagnetics
■650 4▼aApplied physics
■650 4▼aNuclear physics
■653 ▼aFusion
■653 ▼aHelicity
■653 ▼aLocal helicity injection
■653 ▼aPlasma
■653 ▼aTokamak
■690 ▼a0759
■690 ▼a0756
■690 ▼a0215
■690 ▼a0607
■71020▼aThe University of Wisconsin - Madison▼bNuclear Engineering & Engineering Physics.
■7730 ▼tDissertations Abstracts International▼g86-06B.
■790 ▼a0262
■791 ▼aPh.D.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17165143▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
