자료유형  

 학위논문

Control Number  

0016934059

International Standard Book Number  

9798380141819

Dewey Decimal Classification Number  

530

Main Entry-Personal Name  

Beaufore, Lucas.

Publication, Distribution, etc. (Imprint  

[S.l.] : The University of Chicago., 2023

Publication, Distribution, etc. (Imprint  

Ann Arbor : ProQuest Dissertations & Theses, 2023

Physical Description  

1 online resource(146 p.)

General Note  

Source: Dissertations Abstracts International, Volume: 85-02, Section: B.

General Note  

Advisor: Wakely, Scott.

Dissertation Note  

Thesis (Ph.D.)--The University of Chicago, 2023.

Restrictions on Access Note  

This item must not be sold to any third party vendors.

Summary, Etc.  

요약Understanding the propagation processes of cosmic rays is critical to interpreting features in the cosmic-ray spectrum. HELIX (High Energy Light Isotope eXperiment) seeks to improve this understanding by measuring the chemical and isotopic abundances of light cosmic ray nuclei. HELIX is optimized to measure the abundances of the propagation clock isotope 10Be and stable isotope 9Be at energies between 0.2 and 3 GeV/n, an essential dataset for understanding the propagation history of cosmic rays. In addition, HELIX will measure the fluxes of all the light isotopes between protons (Z=1) and neon (Z=10). The HELIX instrument is a magnet spectrometer, designed to fly on a long duration balloon, and consists of a 1 Tesla superconducting magnet with a high-resolution drift-chamber tracker for measuring the particle rigidity, a time of flight detector for measuring charge and velocities at lower energies, and a ring-imaging Cherenkov detector (RICH) for measuring particle velocities at higher energies. Although containing contributions to many elements of HELIX's payload, the majority of this thesis project concerns the design, construction, and calibration of HELIX's RICH detector.This thesis will first give a scientific background on the basics of cosmic ray physics. It will then present an analysis demonstrating how HELIX's scientific goals motivate the development of the RICH detector and how its proper design and calibration affect the final results. Next, this thesis will discuss the properties of silicon photomultipliers (SiPMs), which are used to create the RICH detector's focal plane, as well as the work done to characterize and calibrate those selected for use in HELIX. This thesis will also discuss the development, debugging, and integration of the front end electronics used in the RICH's focal plane. Finally, it will outline the construction, installation into the payload, and in-place calibration of the full RICH detector.

Subject Added Entry-Topical Term  

Physics.

Subject Added Entry-Topical Term  

Astrophysics.

Subject Added Entry-Topical Term  

Particle physics.

Subject Added Entry-Topical Term  

Optics.

Index Term-Uncontrolled  

Balloon

Index Term-Uncontrolled  

Cosmic rays

Index Term-Uncontrolled  

HELIX instrument

Index Term-Uncontrolled  

Isotope

Index Term-Uncontrolled  

RICH

Added Entry-Corporate Name  

The University of Chicago Physics

Host Item Entry  

Dissertations Abstracts International. 85-02B.

Host Item Entry  

Dissertation Abstract International

Electronic Location and Access  

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Control Number  

joongbu:642353