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Magnetometer Temperature Calibration...

Morris, Kate.

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Magnetometer Temperature Calibration Facility.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Magnetometer Temperature Calibration Facility./
Author:	Morris, Kate.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2023,
Description:	99 p.
Notes:	Source: Masters Abstracts International, Volume: 85-03.
Contained By:	Masters Abstracts International85-03.
Subject:	Electromagnetics. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30567299
ISBN:	9798380180924

Magnetometer Temperature Calibration Facility.
Morris, Kate.

Magnetometer Temperature Calibration Facility. - Ann Arbor : ProQuest Dissertations & Theses, 2023 - 99 p.

Source: Masters Abstracts International, Volume: 85-03.

Thesis (M.S.)--The University of Iowa, 2023.

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

Fluxgate magnetometers are important tools for space plasma studies, but these instruments are sensitive to temperature changes in their calibrations due to the wide temperature range that be experienced during orbit. It is critical to characterize their calibration over temperature changes prior to flight. However, building a facility that can maintain a stable magnetic and thermal environment is difficult due to temperature sensitivity of magnetic shielding and building materials. A new calibration facility is desired to span the broad range of positive and negative temperatures experienced in space missions, while providing accurate control for test instruments and producing a three-axis vector magnetic field that can be used for calibration.This temperature testing device was built to accurately calibrate the magnetometers with temperature control for both heating and cooling in the range of -80 to +80 {phono}{mllhring}C. Current calibration methods are limited to an improvised cooling-only system constructed with dry ice. There is a limited number of comparable apparatuses available worldwide, and unlike these similar apparatuses the new facility introduces the additional ability to obtain orthogonality measurements of the relative angles between the three components measured by the magnetometer. The apparatus produces a known and highly stable three-axis magnetic field that is isolated from time-varying external fields that can confound the calibration. A three-layer MuMETAL shield provides this protection from time-varying external fields. A custom-sized Helmholtz coil was designed and built to fit within the shield and generate the necessary magnetic field to which to calibrate the magnetometer. The instrument is housed inside a dewar into which nitrogen is supplied. This insulates the Helmholtz coil and shield from changes in performance that occur when exposed to temperature fluxes. A thermal conditioning unit{A0}supplies controlled flows of liquid and gaseous nitrogen to the dewar, creating a controlled thermal environment. Additional insulation prevents condensation. The design of the facility was verified using heat transfer analysis and ANSYS simulations. Structural analysis on the Helmholtz coil was performed using CREO Simulate. The multi-layered build allows for the complete three-axis calibration of magnetometers up to 5.5 inches in width within a temperature range of -80 to +80 {phono}{mllhring}C. The facility is currently being built and commissioned for potential use for the TRACERS satellite mission.

ISBN: 9798380180924Subjects--Topical Terms:

3173223
Electromagnetics.
Subjects--Index Terms:

Fluxgate magnetometers

Magnetometer Temperature Calibration Facility.
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245 1 0 $a Magnetometer Temperature Calibration Facility.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2023
300 $a 99 p.
500 $a Source: Masters Abstracts International, Volume: 85-03.
500 $a Advisor: Rahman, Sharif.
502 $a Thesis (M.S.)--The University of Iowa, 2023.
506 $a This item must not be sold to any third party vendors.
520 $a Fluxgate magnetometers are important tools for space plasma studies, but these instruments are sensitive to temperature changes in their calibrations due to the wide temperature range that be experienced during orbit. It is critical to characterize their calibration over temperature changes prior to flight. However, building a facility that can maintain a stable magnetic and thermal environment is difficult due to temperature sensitivity of magnetic shielding and building materials. A new calibration facility is desired to span the broad range of positive and negative temperatures experienced in space missions, while providing accurate control for test instruments and producing a three-axis vector magnetic field that can be used for calibration.This temperature testing device was built to accurately calibrate the magnetometers with temperature control for both heating and cooling in the range of -80 to +80 {phono}{mllhring}C. Current calibration methods are limited to an improvised cooling-only system constructed with dry ice. There is a limited number of comparable apparatuses available worldwide, and unlike these similar apparatuses the new facility introduces the additional ability to obtain orthogonality measurements of the relative angles between the three components measured by the magnetometer. The apparatus produces a known and highly stable three-axis magnetic field that is isolated from time-varying external fields that can confound the calibration. A three-layer MuMETAL shield provides this protection from time-varying external fields. A custom-sized Helmholtz coil was designed and built to fit within the shield and generate the necessary magnetic field to which to calibrate the magnetometer. The instrument is housed inside a dewar into which nitrogen is supplied. This insulates the Helmholtz coil and shield from changes in performance that occur when exposed to temperature fluxes. A thermal conditioning unit{A0}supplies controlled flows of liquid and gaseous nitrogen to the dewar, creating a controlled thermal environment. Additional insulation prevents condensation. The design of the facility was verified using heat transfer analysis and ANSYS simulations. Structural analysis on the Helmholtz coil was performed using CREO Simulate. The multi-layered build allows for the complete three-axis calibration of magnetometers up to 5.5 inches in width within a temperature range of -80 to +80 {phono}{mllhring}C. The facility is currently being built and commissioned for potential use for the TRACERS satellite mission.
590 $a School code: 0096.
650 4 $a Electromagnetics. $3 3173223
650 4 $a Aerospace engineering. $3 1002622
650 4 $a Applied physics. $3 3343996
650 4 $a Mechanical engineering. $3 649730
653 $a Fluxgate magnetometers
653 $a Thermal calibration
653 $a Temperature calibration
653 $a Magnetic field
653 $a Helmholtz coil
690 $a 0607
690 $a 0538
690 $a 0215
690 $a 0548
710 2 $a The University of Iowa. $b Mechanical Engineering. $3 1683754
773 0 $t Masters Abstracts International $g 85-03.
790 $a 0096
791 $a M.S.
792 $a 2023
793 $a English
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30567299