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Slice of History: 100 Kilogauss Magnet

3 Apr 2013, 15:55 UTC
Slice of History: 100 Kilogauss Magnet
(200 words excerpt, click title or image to see full post)

By Julie Cooper
Each month in “Slice of History” we feature a historical photo from the JPL Archives. See more historical photos and explore the JPL Archives at https://beacon.jpl.nasa.gov/.

100 kilogauss magnet — Photograph Number 328-430Ac
An intense magnetic field facility was completed in 1964 by the Physics Section of the Space Sciences Division at NASA’s Jet Propulsion Laboratory. It was intended for use in studying superconductors, spectroscopy and new materials, and in other experiments where a wider range of measurements was possible because of the high magnetic field. This photo shows the magnet at center. The system also included a control room, cooling tower, pumps and a heat exchanger. The generator was located in a separate room because of the noise. Water was pumped through the magnet at about 440 gallons per minute, to regulate the temperature of the large copper coil in the center of the magnet. The closed loop system contained distilled water with sodium nitrite for corrosion control.
According to a technical report about the facility, the magnetic field of the magnet and bus bars penetrated nearby rooms to a depth of about 30 feet. Any iron that could be attracted to the magnet had to ...

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