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Electron transport measurements in liquid xenon with Xenoscope, a large-scale DARWIN demonstrator


Baudis, L; Biondi, Y; Bismark, A; Cimental Chavez, A P; Cuenca-García, J J; Franchi, J; Galloway, M; Girard, F; Peres, R; Ramírez García, D; Sanchez-Lucas, P; Thieme, K; Wittweg, C (2023). Electron transport measurements in liquid xenon with Xenoscope, a large-scale DARWIN demonstrator. European Physical Journal C - Particles and Fields, 83(8):717.

Abstract

The DARWIN observatory is a proposed next-generation experiment with 40 tonnes of liquid xenon as an active target in a time projection chamber. To study challenges related to the construction and operation of a multi-tonne scale detector, we have designed and constructed a vertical, full-scale demonstrator for the DARWIN experiment at the University of Zurich. Here, we present the first results from a several-months run with $$343\,\hbox {kg}$$ of xenon and electron drift lifetime and transport measurements with a $$53\,\hbox {cm}$$ tall purity monitor immersed in the cryogenic liquid. After $$88\,\hbox {days}$$ of continuous purification, the electron lifetime reached a value of $$(664\,\pm \,23)\,\upmu \hbox {s}$$. We measured the drift velocity of electrons for electric fields in the range (25–75) V/cm, and found values consistent with previous measurements. We also calculated the longitudinal diffusion constant of the electron cloud in the same field range, and compared with previous data, as well as with predictions from an empirical model.

Abstract

The DARWIN observatory is a proposed next-generation experiment with 40 tonnes of liquid xenon as an active target in a time projection chamber. To study challenges related to the construction and operation of a multi-tonne scale detector, we have designed and constructed a vertical, full-scale demonstrator for the DARWIN experiment at the University of Zurich. Here, we present the first results from a several-months run with $$343\,\hbox {kg}$$ of xenon and electron drift lifetime and transport measurements with a $$53\,\hbox {cm}$$ tall purity monitor immersed in the cryogenic liquid. After $$88\,\hbox {days}$$ of continuous purification, the electron lifetime reached a value of $$(664\,\pm \,23)\,\upmu \hbox {s}$$. We measured the drift velocity of electrons for electric fields in the range (25–75) V/cm, and found values consistent with previous measurements. We also calculated the longitudinal diffusion constant of the electron cloud in the same field range, and compared with previous data, as well as with predictions from an empirical model.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Scopus Subject Areas:Physical Sciences > Engineering (miscellaneous)
Physical Sciences > Physics and Astronomy (miscellaneous)
Uncontrolled Keywords:Physics and Astronomy (miscellaneous), Engineering (miscellaneous)
Language:English
Date:10 August 2023
Deposited On:22 Dec 2023 11:38
Last Modified:29 Jun 2024 01:41
Publisher:Springer
ISSN:1434-6044
OA Status:Gold
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1140/epjc/s10052-023-11823-1
PubMed ID:37576939
Project Information:
  • : FunderH2020
  • : Grant ID742789
  • : Project TitleXenoscope - Towards a multi-ton xenon observatory for astroparticle physics
  • Content: Published Version
  • Language: English
  • Licence: Creative Commons: Attribution 4.0 International (CC BY 4.0)