A scintillator hodoscope (CHOD) will provide a fast signal to trigger data acquisition on the passage of a charged particle. In addition, CHOD information will be combined with data from the RICH in order to provide primitives useful for the selection of $\pi^+$ tracks at subsequent trigger stages. Due to its excellent time resolution ($\sigma_t \simeq 200 $ \si{\pico\second}), this detector will also be a useful tool during the offline analysis, allowing to match the detected track with that of the decaying kaon.\\

%Initially, in 2014, the hodoscope will be a refurbished version of the detector used by the preceding NA48 experiment, to be later replaced with a new detector consisting of two planes of plastic scintillator tiles aligned respectively to the $x$ and $y$ directions.\\

Initially, in 2014, the hodoscope will be a refurbished version of the detector used by the preceding NA48 experiment, to be later replaced with a new detector. The existing NA48 CHOD consists of two planes of 64+64 plastic scintillator tiles aligned respectively to the $x$ and $y$ directions. The scintillation light from the counters is collected by Photonis photomultipliers via short Plexyglas light guides. The ``NEWCHOD'' is currently in design phase. The proposed detector should be built with scintillator tiles of variable dimension according to the distance from the beam, so that the particle rate is below 500~\si{\kilo\hertz} in each counter. Light would be read out via sets of wavelength-shifting fibres positioned in order to maximise the detection efficiency \cite{newchod}.