Emilio Segrè Visual Archives

More than 30,000 photos of scientists and their work

Fermilab F20

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Fermilab F20

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Image title: 
The silicon microstrip vertex detector for experiment #E691 at Fermi National Accelerator Laboratory
Credit line: 
Fermilab Photograph, courtesy of AIP Emilio Segrè Visual Archives

"The silicon microstrip vertex detector for experiment #E691 at Fermilab is used to measure charmed particle decays to an accuracy of less than one thousandth of an inch. The silver cables carry signals from 7000 detector elements built on silicon chips similar to those used for micro-electronic circuits. The experimentor is adjusting the beryllium target which is struck by a photon beam to produce the particles. The experiment is a joint collaboration of physicists from Brazil, Canada and the United States."

Photo date: 
circa 1986
Original format: 
1 photographic print (color; 7.5 x 7.5 inches)
Fermi National Accelerator Laboratory