Observation and applications of single-electron charge signals in the XENON100 experiment

Schumann, Marc (2014). Observation and applications of single-electron charge signals in the XENON100 experiment. Journal of Physics G: Nuclear and Particle Physics, 41(3), 035201. Institute of Physics Publishing IOP 10.1088/0954-3899/41/3/035201

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The XENON100 dark matter experiment uses liquid xenon in a time projection chamber (TPC) to measure xenon nuclear recoils resulting from the scattering of dark matter weakly interacting massive particles (WIMPs). In this paper, we report the observation of single-electron charge signals which are not related to WIMP interactions. These signals, which show the excellent sensitivity of the detector to small charge signals, are explained as being due to the photoionization of impurities in the liquid xenon and of the metal components inside the TPC. They are used as a unique calibration source to characterize the detector. We explain how we can infer crucial parameters for the XENON100 experiment: the secondary-scintillation gain, the extraction yield from the liquid to the gas phase and the electron drift velocity.

Item Type:

Journal Article (Original Article)

Division/Institute:

10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC)
08 Faculty of Science > Physics Institute > Laboratory for High Energy Physics (LHEP)

UniBE Contributor:

Schumann, Marc

Subjects:

500 Science > 530 Physics

ISSN:

0954-3899

Publisher:

Institute of Physics Publishing IOP

Language:

English

Submitter:

Jan Dirk Brinksma

Date Deposited:

08 Jun 2015 15:59

Last Modified:

20 Oct 2015 08:13

Publisher DOI:

10.1088/0954-3899/41/3/035201

ArXiv ID:

1311.1088v2

Additional Information:

Kollaboration - Es sind nur die Berner Autoren namentlich erwähnt.

BORIS DOI:

10.7892/boris.68739

URI:

https://boris.unibe.ch/id/eprint/68739

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