10th International Workshop on Ring Imaging Cherenkov Detectors

Particle detection efficiency of the KEDR detector ASHIPH system

1 Aug 2018, 12:15

25m

Blue Hall (Russian Academy of Sciences)

oral presentation [20+5 min] Alternative PID techniques Alternative PID techniques

Speaker

Ivan Ovtin (BINP)

Description

The particle identification system ASHIPH (Aerogel SHifter PHotomultiplier) has been working in the KEDR experiment at VEPP-4M collider since 2014. The system consists of 160 counters arranged in two layer and covers the 96% of the solid angle. Two layer system permits to use different approaches for pi/K-separation. Three such approaches are described. The status of the system is presented. Main system parameters such as BhaBha suppression factor, pi/K-separation power, relativistic particle detection efficiency were measured with help of cosmic particles and experimental data collected at the peak of J/psi-meson. Dependences of these parameters on time are evaluated. Monte-Carlo simulation procedures are described and its results are presented as well.

Presentation materials

ovtin_rich2018.pdf