# NA62 Charged Particle Hodoscope. Design and performance in 2016 run

## TL;DR

The paper describes the design, implementation, and performance of the NA62 Charged Particle Hodoscope, a detector used in CERN's NA62 experiment to identify charged particles in the 2016 run for rare kaon decay measurements.

## Contribution

It introduces the design and operational performance of the new Charged Particle Hodoscope integrated into the NA62 experiment in 2016.

## Key findings

- The detector operated continuously during the 2016 run.
- The hodoscope successfully provided input signals for the L0 trigger.
- Performance metrics met the experimental requirements.

## Abstract

The NA62 experiment at CERN SPS is aimed to measure the branching ratio of the ultra-rare decay $K^+\rightarrow\pi^+ \nu \bar{\nu}$ with 10\% accuracy. The experiment operates with a 75 GeV/c high intensity (750 MHz) secondary beam. A new detector, named Charged Particle Hodoscope (CHOD), designed to produce an input signal to the L0 trigger processor for events with charged particles produced in kaon decays, has been assembled, installed, integrated in NA62 Data Acquisition System (DAQ) and commissioned in 2016. During the whole 2016 run the detector has been in continuous operation. Design and performance features of the detector are presented.