Using precision timing to improve particle tracking

Understand

Silicon tracking detectors provide excellent spatial resolution, and so can provide excellent momentum resolution for energetic charged particles, even in compact detectors.

• However, at lower momenta, multiple scattering in the silicon degrades the momentum resolution.
• We present an alternate method to measure momentum and alleviate this degradation, using silicon detectors that also incorporate timing measurements.
• By using timing information between two silicon layers, it is possible to solve for the the radius of curvature, and hence the particle momentum, independent of multiple scattering within the silicon.