Two RICH Detectors as Velocity Spectrometers in the CKM Experiment

TL;DR

This paper describes the design and expected performance of two RICH detectors as velocity spectrometers for the CKM experiment, aiming to precisely measure rare kaon decays.

Contribution

It introduces a novel application of RICH detectors as velocity spectrometers in the CKM experiment, based on SELEX data and Monte Carlo simulations.

Findings

Design based on SELEX Phototube RICH

Expected high-precision velocity measurements

Simulation results support detector performance

Abstract

We present the design of two velocity spectrometers, to be used in the recently approved CKM experiment. CKM's main goal is the measurement of the branching ratio of K+ -> pi+ nu nu with a precision of 10%, via decays in flight of the K+. The design of both RICH detectors is based on the SELEX Phototube RICH. We will discuss the design and the expected performance, based on studies with SELEX data and Monte Carlo Simulations.