Geometry of the muon storage ring

Possible geometries of a muon storage ring have been determined from the requirement of the position of the detectors. If the detector distances are specified and not their azimuth, there remains one freeparameter to determine the geometry. It can be used for instance tooptimize the slope of the machine plane. On the CERN site the maximumheight of the storage ring is limited by the thickness of the molasseto less than 300m. Then the maximum length of the straight section pointing to the far detector is about 800m. For a ring of triangularshape with two equal sides, this length represents about 36% of the ring circumference using 4T dipoles in the arcs. The overall maximum tunnel slope is 33o.