From Deseret News archives:
A ray of light for space mystery
Cosmic rays to be studied at new observatory
The first component of a $12 million to $18 million observatory is under construction at Black Rock Mesa, 15 miles southwest of Delta. Many other parts will be built over the next two years, in a search for clues about high-energy cosmic rays.
Japan is providing $12 million for the project while the U. and other American universities are seeking $6 million in federal funding, according to a University of Utah press release.
Cosmic rays are particles from space that slam into Earth's atmosphere at high velocities. Little is known about those of the highest energy levels.
One particle detected by the U. "Fly's Eye" observatory in 1991 carried the energy of 300 billion billion electron volts, the release points out. It adds, "billion twice is correct." That single subatomic particle carried as much wallop as a fast-pitched baseball.
According to the U., some ideas are that high-energy cosmic rays result from the physics of string theory; or they might be remnants of particles that flew out during the "big bang," the sudden creation of the universe.
These sites will house "fluorescence detectors" to record the glow of cosmic rays as they streak through the atmosphere.
In addition, a ground array of 576 scintillation detectors will be built. These detectors, placed on stands about two feet tall, will be evenly spaced throughout an 18-mile by 22-mile parcel of desert west of Hinckley, Millard County. They will register the impact of particle showers resulting from the cosmic ray colliding with the gases of the atmosphere.
Five communications towers also are planned.
Official groundbreaking for the Black Rock Mesa facility was on Saturday, although that wasn't the start of building.
"There's a lot of construction already going on," said Kai Martens, assistant professor of physics at the University of Utah and one of the project's leaders. "It was a belated groundbreaking."
Japanese scientists using scintillation counters have obtained results that are puzzling and somewhat at odds with cosmic ray discoveries made by the U.'s air-glow detectors at the Army's Dugway Proving Ground. Using both techniques in the new Telescope Array may resolve the differences.
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