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Magnetometer Temperature Calibration Facility.

紀錄類型:	書目-語言資料,手稿 : Monograph/item
正題名/作者:	Magnetometer Temperature Calibration Facility./
作者:	Morris, Kate.
面頁冊數:	1 online resource (99 pages)
附註:	Source: Masters Abstracts International, Volume: 85-03.
Contained By:	Masters Abstracts International85-03.
標題:	Electromagnetics. -
電子資源:	click for full text (PQDT)
ISBN:	9798380180924

Magnetometer Temperature Calibration Facility.
Morris, Kate.

Magnetometer Temperature Calibration Facility. - 1 online resource (99 pages)

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

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

Includes bibliographical references

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 °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 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 °C. The facility is currently being built and commissioned for potential use for the TRACERS satellite mission.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2024

Mode of access: World Wide Web

ISBN: 9798380180924Subjects--Topical Terms:

1178899
Electromagnetics.
Subjects--Index Terms:

Fluxgate magnetometersIndex Terms--Genre/Form:

554714
Electronic books.

Magnetometer Temperature Calibration Facility.
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500 $a Advisor: Rahman, Sharif.
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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 °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 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 °C. The facility is currently being built and commissioned for potential use for the TRACERS satellite mission.
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650 4 $a Aerospace engineering. $3 686400
650 4 $a Applied physics. $3 1181953
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653 $a Thermal calibration
653 $a Temperature calibration
653 $a Magnetic field
653 $a Helmholtz coil
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