Tilt meters measure the angle with respect to gravity, like a very sensitive carpenter’s level. The TeV tilt meters were put in place after a magnitude 8.0 Alaskan earthquake was found to be responsible for a quench. Most earthquakes are too small and too far away to cause such problems, but shockwaves from an earthquake can move a magnet as much as a millimeter, which is a huge motion for a two-kilometer (diameter) machine.
|last modified 7/17/2003 email Fermilab|
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