Time-of-flight detector (original) (raw)

Particle detector

	This article relies largely or entirely on a single source. Relevant discussion may be found on the talk page. Please help improve this article by introducing citations to additional sources.Find sources: "Time-of-flight detector" – news · newspapers · books · scholar · JSTOR (December 2009)

A time-of-flight (TOF) detector is a particle detector which can discriminate between a lighter and a heavier elementary particle of same momentum using their time of flight between two scintillators.[1] The first of the scintillators activates a clock upon being hit while the other stops the clock upon being hit. If the two masses are denoted by m 1 {\displaystyle m_{1}} $m_{1}$ and m 2 {\displaystyle m_{2}} $m_{2}$ and have velocities v 1 {\displaystyle v_{1}} $v_{1}$ and v 2 {\displaystyle v_{2}} $v_{2}$ then the time of flight difference is given by

Δ t = L ( 1 v 1 − 1 v 2 ) ≈ L c 2 p 2 ( m 1 2 − m 2 2 ) {\displaystyle \Delta t=L\left({\frac {1}{v_{1}}}-{\frac {1}{v_{2}}}\right)\approx {\frac {Lc}{2p^{2}}}(m_{1}^{2}-m_{2}^{2})} $\Delta t=L\left({\frac {1}{v_{1}}}-{\frac {1}{v_{2}}}\right)\approx {\frac {Lc}{2p^{2}}}(m_{1}^{2}-m_{2}^{2})$

where L {\displaystyle L} $L$ is the distance between the scintillators. The approximation is in the relativistic limit at momentum p {\displaystyle p} $p$ and c {\displaystyle c} $c$ denotes the speed of light in vacuum.

References

[edit]

^ "TOF Detector | Hamamatsu Photonics". hep.hamamatsu.com. Retrieved 2024-11-25.

	This particle physics–related article is a stub. You can help Wikipedia by expanding it.

Time-of-flight detector (original) (raw)

See also

References