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T: Fachverband Teilchenphysik

T 98: Experimental Methods (general) 4

T 98.4: Talk

Thursday, March 24, 2022, 17:05–17:20, T-H29

Low-background poly(ethylene naphthalate) as active structural material for the LEGEND-200 0νββ experiment — •Felix Fischer for the PEN collaboration — Max-Planck-Institut für Physik, München, Deutschland

Poly(ethylene naphthalate), PEN, is a widely used industrial polyester which intrinsically scintillates blue light and has very good mechanical properties, also at cryogenic temperatures. This makes PEN an ideal candidate for self-vetoing structural materials in the close surrounding of ultra low background detectors for the search of extremely rare events like 0νββ decay. The process from procurement of commercially available PEN pellets to an optically active low background support-structure to be used in the next generation 0νββ-decay search experiment Legend-200 will be presented.