Electron drift properties in high pressure gaseous xenon

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Published 18 July 2018 © 2018 IOP Publishing Ltd and Sissa Medialab
, , Citation A. Simón et al 2018 JINST 13 P07013 DOI 10.1088/1748-0221/13/07/P07013

1748-0221/13/07/P07013

Abstract

Gaseous time projection chambers (TPC) are a very attractive detector technology for particle tracking. Characterization of both drift velocity and diffusion is of great importance to correctly assess their tracking capabilities.

NEXT-White is a High Pressure Xenon gas TPC with electroluminescent amplification, a 1:2 scale model of the future NEXT-100 detector, which will be dedicated to neutrinoless double beta decay searches. NEXT-White has been operating at Canfranc Underground Laboratory (LSC) since December 2016. The drift parameters have been measured using 83mKr for a range of reduced drift fields at two different pressure regimes, namely 7.2 bar and 9.1 bar. The results have been compared with Magboltz simulations. Agreement at the 5% level or better has been found for drift velocity, longitudinal diffusion and transverse diffusion.

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10.1088/1748-0221/13/07/P07013