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The next generation of gaseous photon detectors is requested to overcome the limitations of the available technology, in terms of resolution and robustness. The quest for a novel photocathode, sensitive in the far vacuum ultra violet wavelength range and more robust than present ones, motivated an R&D programme to explore nanodiamond based photoconverters, which represent the most promising alternative to cesium iodine. A procedure for producing the novel photocathodes has been defined and applied on THGEMs samples. Systematic measurements of the photo emission in different Ar/CH4 and Ar/CO2 gas mixtures with various types of nanodiamond powders have been performed. A comparative study of the response of THGEMs before and after coating demonstrated their full compatibility with the novel photocathodes.
Publication date: 
1 Nov 2023

FM Brunbauer, C Chatterjee, G Cicala, A Cicuttin, ML Crespo, D D‘Ago, S Dalla Torre, S Dasgupta, M Gregori, S Levorato, T Ligonzo, M Lisowska, MS Leone, R Rai, L Ropelewski, F Tessarotto, A Valentini, L Velardi

Biblio References: 
Volume: 1056 Pages: 168575
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment