Würzburg 2018 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 91: Experimentelle Methoden der Astroteilchenphysik IV

T 91.7: Vortrag

Donnerstag, 22. März 2018, 18:00–18:15, Z6 - SR 2.011

Characterization of surface cleaning procedures for liquid noble gas detectors — •Pablo Herrero Gómez — Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg

Adequate surface cleaning procedures of materials constituting fiducial volumes are crucial in many liquid noble gas detectors used in direct dark matter or 0νββ decay searches. On one hand, surface cleaning reduces residual lubricants from the production processes as well as potential background sources like radon daughters plated out on the detector's materials. On the other hand, inappropriate cleaning procedures might have a negative effect on the gas purity of noble gas detector due to outgassing. In this talk I introduce strategies to probe standard surface cleaning procedures for their applicability in liquid noble gas detectors. With dedicated experimental setups, various possibilities for background mitigation, so as outgassing minimization, can be investigated and mutual influences between each other can be studied.