Symbol gamma

The passage around this formula

Electrons circulating in a storage ring undergo enormous proper acceleration — for an ultra-relativistic beam of Lorentz factor $\gamma$ on a ring of radius r , the proper centripetal acceleration is a $\approx$ $\gamma^2$ $c^2$/r . For beam parameters typical of a large electron-positron collider, with $\gamma$ of order 2$\times$10^5 and r of order several kilometers, this works out to a $\sim$ 8$\times$10^{23}\,$\mathrm{m\,s^{-2}}$ ,…

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