PPT Slide
HEMC workshop 1999 cdj Siting Options
The neutrino flux from a high energy muon collider will present a radiation hazard unless the collider ring is placed underground - deep enough that the the dose rates from hadronic and leptonic showers in the regions where the neutrino beam (disk) exits the Earth�s surface are well below permitted radiation levels. Approximate values of the depth underground versus CoM energy are listed below.
The practical limit to underground siting is in the region of 5 to 10 TeV unless some advantage can be taken of:
A mountain site - collider in valley or on mountain top
An island site - collider below sea level
Very low population density (occupancy factor is a regulatory issue)
None of these are particularly attractive propositions but they should be evaluated in terms of their regulatory, economic, cultural and political implications.