This plot shows the coverage of the Muon Arms, between 10° and 35°, for event vertex positions between -10 and +10 cm.

The area shaded in magenta shows the portion of the acceptance where tracks will traverse 4 silicon endcaps. Above an below are red hatched bands showing where tracks see just three endcaps, and the dotted line higher up shows where just one endcap is traversed. Above the dotted line no endcaps are hit at all.

The blue lines and shadings show where barrel silicon is hit. Tracks above the blue line labeled [1] go through the first barrel pixel layer. Above the blue line labeled [2], both pixel layers are hit, and in light blue 1 and 2 strip strip layers are traversed.

The black shaded area is whre particles see only the barrel pixel layers and no barrel strip or endcap silicon.

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