Time-Of-Flight Barrel (TB)

TB is situated at a radius of 2.36 m, surrounding the solenoid. It is made up of 160 scintillation counters, which are trapezoidal in shape. Each one is 6.84 m in length, 45 mm in depth and ranges between 89 mm and 91 mm in width. The tiles form a layer that covers a solid angle range of $\vert\cos\theta\vert < 0.82$. The time resolution of TB is approximately 300 ps and the difference in time between the signal arriving at each end of the counter is used to make a $z$-position measurement.