As far as the tile roofs, they last a long time. It isn't the tile that is the issue, it's the felt (or paper) underneath that gets replaced. Mine is 25 years old, has not been replaced yet. Some neighbors have had theirs redone, but many have not as yet. 04-06-2011, 12:00 AM.
Smaller particle accelerators are used in a wide variety of applications, including particle therapy for oncological purposes, radioisotope production for medical diagnostics, ion implanters for manufacture of semiconductors, and accelerator mass spectrometers for measurements of rare isotopes such as radiocarbon.
What is Cyclotron Accelerator? Cyclotron accelerator is also a particle accelerator, which is mostly used in small-scale projects. A cyclotron is a circular vacuum chamber where the acceleration of particles begins at the center. The particles take a spiral path as they are accelerated.