Radon depletion in xenon boil-off gas

Bruenner, S.; Cichon, D.; Lindemann, S.; Undagoitia, T. Marrodán; Simgen, H.

doi:10.1140/epjc/s10052-017-4676-1

Cited by 25 publications

(23 citation statements)

References 35 publications

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“…Such low concentrations are measured with a gas chromatography system coupled to a mass spectrometer (rare gas mass spectrometer, RGMS [57]). The possibility for online removal of Rn was demonstrated first in a single stage setup [58] and by installing a shortened (1 m package material) version of the final cryogenic distillation column in reverse and lossless mode on XENON100. A radon reduction factor of > 27 (at 95% CL) was achieved [59].…”

Section: Krypton Removal By Cryogenic Distillationmentioning

confidence: 99%

The XENON1T dark matter experiment

Aprile¹,

Aalbers²,

Agostini³

et al. 2017

Eur. Phys. J. C

Self Cite

267

313

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The XENON1T experiment at the Laboratori Nazionali del Gran Sasso (LNGS) is the first WIMP dark matter detector operating with a liquid xenon target mass above the ton-scale. Out of its 3.2 t liquid xenon inventory, 2.0 t constitute the active target of the dual-phase time projection chamber. The scintillation and ionization signals from particle interactions are detected with low-background photomultipliers. This article describes the XENON1T instrument and its subsystems as well as strategies to achieve an unprecedented low background level. First results on the detector response and the performance of the subsystems are also presented.

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Section: Krypton Removal By Cryogenic Distillationmentioning

confidence: 99%

The XENON1T dark matter experiment

Aprile¹,

Aalbers²,

Agostini³

et al. 2017

Eur. Phys. J. C

Self Cite

267

313

View full text Add to dashboard Cite

show abstract

“…Another possibility for 222 Rn reduction is an online radon removal system in the xenon purification loop, which separates xenon from radon and retains the latter until its disintegration. Such a radon removal system based on cryogenic distillation was pioneered by the XENON collaboration [21,37]. In XENON1T, we realized radon removal by employing the cryogenic distillation system built for krypton removal from xenon and operating it in reverse direction [38].…”

Section: Reduction Of 222 Rnmentioning

confidence: 99%

$$^{222}$$Rn emanation measurements for the XENON1T experiment

Aprile¹,

Aalbers²,

Agostini³

et al. 2021

Eur. Phys. J. C

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The selection of low-radioactive construction materials is of utmost importance for the success of low-energy rare event search experiments. Besides radioactive contaminants in the bulk, the emanation of radioactive radon atoms from material surfaces attains increasing relevance in the effort to further reduce the background of such experiments. In this work, we present the $$^{222}$$ 222 Rn emanation measurements performed for the XENON1T dark matter experiment. Together with the bulk impurity screening campaign, the results enabled us to select the radio-purest construction materials, targeting a $$^{222}$$ 222 Rn activity concentration of $$10\,\mathrm{\,}\upmu \mathrm{Bq}/\mathrm{kg}$$ 10 μ Bq / kg in $$3.2\,\mathrm{t}$$ 3.2 t of xenon. The knowledge of the distribution of the $$^{222}$$ 222 Rn sources allowed us to selectively eliminate problematic components in the course of the experiment. The predictions from the emanation measurements were compared to data of the $$^{222}$$ 222 Rn activity concentration in XENON1T. The final $$^{222}$$ 222 Rn activity concentration of $$(4.5\pm 0.1)\,\mathrm{\,}\upmu \mathrm{Bq}/\mathrm{kg}$$ ( 4.5 ± 0.1 ) μ Bq / kg in the target of XENON1T is the lowest ever achieved in a xenon dark matter experiment.

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“…The setup used for the measurements presented in this publication is the Heidelberg Xenon (HeXe) xenon TPC, operated in single-phase mode, which has previously been used for other published studies [29][30][31]. The LXe target is enclosed by PTFE in a cylindrical volume of 5.6 cm diameter and 5 cm height.…”

Section: Experimental Methodsmentioning

confidence: 99%

Scintillation decay-time constants for alpha particles and electrons in liquid xenon

Cichon¹,

Eurin²,

Jörg³

et al. 2022

Preprint

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Understanding liquid xenon scintillation and ionization processes is of great interest to improve analysis methods in current and future detectors. In this paper, we investigate the dynamics of the scintillation process for excitation by O(10 keV) electrons from a 83m Kr source and O(6 MeV) αparticles from a 222 Rn source, both mixed with the xenon target. The single photon sampling method is used to record photon arrival times in order to obtain the corresponding time distributions for different applied electric fields between about 0.8 V/cm to 1.2 kV/cm. Energy and field dependences of the signals which are observed in the results are discussed.

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Radon depletion in xenon boil-off gas

Cited by 25 publications

References 35 publications

The XENON1T dark matter experiment

The XENON1T dark matter experiment

$$^{222}$$Rn emanation measurements for the XENON1T experiment

Scintillation decay-time constants for alpha particles and electrons in liquid xenon

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