Numi Work-Cell Shielding Design

K.V. Vaziri (Fermi National Accelerator Laboratory)

Neutrinos at the Main Injector (NuMI) is a long baseline neutrino experiment at Fermilab. To produce the neutrino beam, first an intense proton beam interacts with a carbon target, producing pions that are focused using magnetically focusing horns. Neutrinos are the decay product of these pions that are aimed at a detector in the Soudan mine in northern Minnesota. The residual activation levels of the horns and the target assembly are very high. Inspection, possible repairs and replacement of these devices have to be done remotely and with a well-shielded Work-cell. The different shielding calculations used to design the NuMI Work-cell are presented.

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