Ponente
Descripción
Detection of the vacuum ultraviolet (VUV) scintillation light produced by liquid noble elements will be of central importance to fully exploit the potential of future time projection chambers (TPCs) using these media. A novel technology recently proposed to detect VUV light is based on a windowless amorphous selenium photosensor. This device would open the door to the possibility of making an integrated charge plus light sensor, which would be simultaneously sensitive to the two signals of a liquid noble gas TPC. This would allow for a larger effective area, provide an increased sensitivity to the low energy physics (few MeV) and greater fidelity in energy reconstruction. We present here the concept of the amorphous selenium photosensor and the experimental results that show that the proof-of-principle is robust under cryogenic conditions. We report as well about the R&D ongoing and the latest light simulation tools developed to benchmark the performance of the device.
