Position Reconstruction in a Dual Phase Xenon Scintillation Detector

Solovov, V.; Belov, V.; Akimov, D.; Araújo, H. M.; Barnes, E. J.; Burenkov, A.; Chepel, V.; Currie, A.; Viveiros, L. de; Edwards, B.; Ghag, C.; Hollingsworth, A.; Horn, M.; Kalmus, G.; Kobyakin, A. S.; Kovalenko, A. G.; Lebedenko, V.N.; Lindote, A.; Lopes, I.; Lüscher, R.; Majewski, P.; Murphy, A. St. J.; Neves, F.; Paling, S. M.; Cunha, J. Pinto da; Preece, R.; Quenby, J. J.; Reichhart, L.; Scovell, P. R.; Silva, C.; Smith, N. J. T.; Smith, P.F.; Stekhanov, V.; Sumner, T. J.; Thorne, Claire; Walker, R. J.

doi:10.1109/tns.2012.2221742

Cited by 63 publications

(91 citation statements)

References 24 publications

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“…By exploiting a combined energy estimator, σ /E ≈ 3.4% for 122 keV γ-rays [199], σ /E ≈ 3% for 570 keV [198] and σ /E ≈ 1.7% for 662 keV γ-rays [200] have been achieved in liquid xenon. The resolution improvement is more pronounced at high energies but still significant below 100 keV [199,201,202,197]. For example, for 40 keV γ-rays XENON100 reported σ /E ≈ 16.2% when measured with the primary scintillation signal only, and ≈9% for the combined signal [197].…”

Section: Combined Signalmentioning

confidence: 99%

“…The depth coordinate is obtained with precision of a few tens of µm from the drift time of the ionization (measured by the time separation between the primary and the secondary scintillation signalssee Figure 3). The horizontal coordinates are reconstructed from S2 signals from all PMTs; a spatial resolution of 1.6 mm (FWHM) was achieved for 122 keV γ-rays [199]. A fiducial volume containing 6.5 kg of liquid xenon was defined for the 83-day long first run of ZEPLIN-III [376], decreasing to 5.1 kg for the 319-day second run owing to the poorer PMT performance.…”

Section: Liquid Xenon Detectorsmentioning

confidence: 99%

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Liquid noble gas detectors for low energy particle physics

2013

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We review the current status of liquid noble gas radiation detectors with energy threshold in the keV range, which are of interest for direct dark matter searches, measurement of coherent neutrino scattering and other low energy particle physics experiments. Emphasis is given to the operation principles and the most important instrumentation aspects of these detectors, principally of those operated in the double-phase mode. Recent technological advances and relevant developments in photon detection and charge readout are discussed in the context of their applicability to those experiments.

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Section: Combined Signalmentioning

confidence: 99%

Section: Liquid Xenon Detectorsmentioning

confidence: 99%

Liquid noble gas detectors for low energy particle physics

2013

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“…An improved position reconstruction was developed based on a data-driven photon acceptance function (PAF) similar to Ref. [7], leading to a better FV definition. We performed NR calibration runs using a low-intensity (approximately 2 Hz) 241 Am-Be (AmBe) neutron source with improved statistics, and an ER calibration run by injecting tritiated methane [8], leading to a better understanding of the distributions of the NR and ER events.…”

mentioning

confidence: 99%

Dark Matter Results from First 98.7 Days of Data from the PandaX-II Experiment

Tan¹,

Xiao²,

Cui³

et al. 2016

Phys. Rev. Lett.

600

697

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We report the WIMP dark matter search results using the first physics-run data of the PandaX-II 500 kg liquid xenon dual-phase time-projection chamber, operating at the China JinPing underground Laboratory. No dark matter candidate is identified above background. In combination with the data set during the commissioning run, with a total exposure of 3.3×10 4 kg-day, the most stringent limit to the spin-independent interaction between the ordinary and WIMP dark matter is set for a range of dark matter mass between 5 and 1000 GeV/c 2 . The best upper limit on the scattering cross section is found 2.5 × 10 −46 cm 2 for the WIMP mass 40 GeV/c 2 at 90% confidence level.Weakly interacting massive particles, WIMPs in short, are a class of hypothetical particles that came into existence shortly after the Big Bang. The WIMPs could naturally explain the astronomical and cosmological evidences of dark matter in the Universe. The weak interactions between WIMPs and ordinary matter could lead to the recoils of atomic nuclei that produce detectable signals in deep-underground direct detection experiments. Over the past decade, the dual-phase xenon time-projection chambers (TPC) emerged as a powerful technology for WIMP searches both in scaling up the target mass, as well as in improving background rejection [1][2][3]. LUX, a dark matter search experiment with a 250 kg liquid xenon target, has recently reported the best limit of 6×10 −46 cm 2 on the WIMP-nucleon scattering cross section [4] The PandaX-II experiment, a half-ton scale dual-phase xenon experiment at the China JinPing underground Laboratory (CJPL), has recently reported the dark matter search results from its commissioning run (Run 8,19.1 live days) with a 5845 kg-day exposure [5]. The data were contaminated with significant 85 Kr background. After a krypton distillation campaign in early 2016, PandaX-II commenced physics data taking in March 2016. In this paper, we report the combined WIMP search results using the data from the first physics run from March 9 to June 30, 2016 (Run 9, 79.6 live days) and Run 8, with a total of 3.3×10 4 kg-day exposure, the largest reported WIMP data set among dual-phase xenon detectors in the world to date.The PandaX-II detector has been described in detail in Ref. [5]. The liquid xenon target consists of a cylindrical TPC with dodecagonal cross section (opposite-side distance 646 mm), confined by the polytetrafluoroethylene (PTFE) reflective wall, and a vertical drift distance of 600 mm defined by the cathode mesh and gate grid located at the bottom and top. For each physical event, the prompt scintillation photons (S1) and the delayed electroluminescence photons (S2) from the ionized electrons are collected by two arrays of 55 Hamamatsu R11410-arXiv:1607.07400v3 [hep-ex] Hamamatsu R8520-406 1-inch PMTs serving as an active veto. The γ background, which produces electron recoil (ER) events, can be distinguished from the dark matter nuclear recoil (NR) using the S2-to-S1 ratio. During the data taking period in Run 9, a few diffe...

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“…A value proportional to the energy released in ionization was obtained by ANTS-2 for each point of g-ray interaction. Since the fractions of energy that go to scintillation and ionization are anticorrelated in a liquid noble gas media [36], [37] the new (reconstructed) S2 value is then linearly combined with S1 in order to obtain the value A = a·S1 + b·S2 proportional to a total energy. The coefficients a and b were adjusted so as to minimize a width of A value distribution for the 0.511 MeV g-line from the 22 Na source (1 in figure 10).…”

Section: Energy Calibration By G-sourcesmentioning

confidence: 99%

First ground-level laboratory test of the two-phase xenon emission detector RED-100

Akimov

Belov²,

Bolozdynya³

et al. 2020

J. Inst.

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RED-100 is a two-phase detector for study of coherent elastic scattering of reactor electron antineutrinos off xenon atomic nuclei. The detector contains a total of 200 kg of liquid xenon in a titanium cryostat with 160 kg of xenon in active volume inside a Teflon-made light collection cage associated with electrode system. The active volume is viewed by two arrays of nineteen 3"-diameter Hamamatsu R11410-20 PMTs assembled in two planes on top and bottom. The electrode system is equipped with an electron shutter (a patented device) to reduce a "spontaneous" single-electron noise. The detector was tested in a ground-level laboratory. The obtained results demonstrate that detection of coherent elastic scattering of reactor antineutrinos off xenon nuclei at Kalinin nuclear power plant with the RED-100 detector is feasible with a threshold of 4 ionization electrons.

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Position Reconstruction in a Dual Phase Xenon Scintillation Detector

Cited by 63 publications

References 24 publications

Liquid noble gas detectors for low energy particle physics

Liquid noble gas detectors for low energy particle physics

Dark Matter Results from First 98.7 Days of Data from the PandaX-II Experiment

First ground-level laboratory test of the two-phase xenon emission detector RED-100

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