Abstract
The capture of scintillation light emitted by liquid Argon and Xenon under molecular excitations by charged particles is still a challenging task. Here we present a first attempt to design a device able to have a sufficiently high photon detection efficiency, in order to reconstruct the path of ionizing particles. The study is based on the use of masks to encode the light signal combined with single-photon detectors, showing the capability to detect tracks over focal distances of about tens of centimeters. From numerical simulations it emerges that it is possible to successfully decode and recognize signals, even of rather complex topology, with a relatively limited number of acquisition channels. Thus, the main aim is to elucidate a proof of principle of a technology developed in very different contexts, but which has potential applications in liquid argon detectors that require a fast reading. The findings support us to think that such innovative technique could be very fruitful in a new generation of detectors devoted to neutrino physics.
Highlights
The capture of scintillation light emitted by liquid Argon and Xenon under molecular excitations by charged particles is still a challenging task
We present a first attempt to design a device able to have a sufficiently high photon detection efficiency, in order to reconstruct the path of ionizing particles
The study is based on the use of masks to encode the light signal combined with single-photon detectors, showing the capability to detect tracks over focal distances of about tens of centimeters
Summary
(TPCs), in order to obtain track images, instead of simple triggering signals As it is known, noble elements in the liquid phase (LAr, LXe) are used as target and detector in high energy physics. In TPCs the event reconstruction is just based on the collection of drift electrons and the fast light signal is exploited only to set the trigger time t0 for the data acquisition. The benefits of this novel technique are several, as rate capability, especially relevant for accelerator based experiments, and possibility to work in magnetic field. Performance of conventional optics in VUV range is very poor and readout electronics must be operated in cryogenic conditions with single-photon detection capability
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