In colliders using hadrons, only the momentum transverse to the beam direction can be determined.

Wedges have the disadvantage of both translating and bending the beam direction - paths will no longer lie on convenient rectangular coordinates.

Typically, separate beta functions are used for two perpendicular directions in the plane transverse to the beam direction (e.g. horizontal and vertical directions).

The SMRD records muons escaping the inner parts of the detector at large angles with respect to the beam direction.

This was achieved by using aerials with many more elements, but it retained the simple switching of two of the reflector elements to alter the beam directions very marginally.

The hadronic system produced in two-photon reactions has in general a rather high momentum along the beam direction resulting in small hadronic scattering angles.

The latter employs a magnetic field applied longitudinally to the beam direction, and monitors the relaxation of muon spins caused by magnetic oscillations with another magnetic nucleus.

Perhaps the largest of these is the use of forward scattered light, which is orders of magnitude brighter than scattering oriented normal to the beam direction.

This greatly reduces the time necessary to change the beam direction from one point to another, allowing almost simultaneous tracking of multiple targets while maintaining overall surveillance.

That way the beam tends to follow equipotentials and the deflection force is normal to the beam direction.