Compton imaging of MeV gamma-rays with the Liquid Xenon Gamma-Ray Imaging Telescope (LXeGRIT)

Aprile, E.; Curioni, A.; Giboni, K. L.; Kobayashi, Masanori; Oberlack, U.; Zhang, S.

doi:10.1016/j.nima.2008.05.039

Cited by 47 publications

(31 citation statements)

References 13 publications

(10 reference statements)

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“…26, according to the relation α = β/ tan θ. From the 164 keV calibration peak, we obtain, W tot = 14.0 eV (6) in good agreement with a study in a small LXe detector [54]. The energy resolution of the XENON10 detector was investigated with gamma ray sources ( 57 Co, 22 Na, 137 Cs, 228 Th) covering the energy range between 122 keV to 2.6 MeV.…”

Section: Combined Energy Scalesupporting

confidence: 86%

“…Among these, two are particularly important: a) the development by Hamamatsu Photonics of compact metal channel photomultipliers (PMTs) for the detection of the LXe scintillation light, with continuous improvement in quantum efficiency and radio-purity [6][7][8]; b) the development of a pulse tube refrigerator (PTR) optimized for LXe temperature [9] to achieve the required long-term stability of a cryogenics detector filled with a large LXe volume.…”

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confidence: 99%

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Design and performance of the XENON10 dark matter experiment

Aprile

Angle

Arneodo

et al. 2011

Astroparticle Physics

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XENON10 is the first two-phase xenon time projection chamber (TPC) developed within the XENON dark matter search program. The TPC, with an active liquid xenon (LXe) mass of about 14 kg, was installed at the Gran Sasso Underground Laboratory (LNGS) in Italy, and operated for more than one year, with excellent stability and performance. Results from a dark matter search with XENON10 have been published elsewhere. In this paper, we summarize the design and performance of the detector and its subsystems, based on calibration data using sources of gamma-rays and neutrons as well as background and Monte Carlo simulation data. The results on the detector's energy threshold, position resolution, and overall efficiency show a performance that exceeds design specifications, in view of the very low energy threshold achieved (<10 keVr) and low background rate achieved.Design and Performance of the XENON10 Dark Matter Experiment XENON10 is the first two-phase xenon time projection chamber (TPC) developed within the XENON dark matter search program. The TPC, with an active liquid xenon (LXe) mass of about 14 kg, was installed at the Gran Sasso underground laboratory (LNGS) in Italy, and operated for more than one year, with excellent stability and performance. Results from a dark matter search with XENON10 have been published elsewhere. In this paper, we summarize the design and performance of the detector and its subsystems, based on calibration data using sources of gamma-rays and neutrons as well as background and Monte Carlo simulations data. The results on the detector's energy threshold, energy and position resolution, and overall efficiency show a performance that exceeds design specifications, in view of the very low energy threshold achieved (<10 keVr) and the excellent energy resolution achieved by combining the ionization and scintillation signals, detected simultaneously.PACS numbers: 95.35.+d, 29.40.Mc, 95.55.Vj

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Section: Combined Energy Scalesupporting

confidence: 86%

mentioning

confidence: 99%

Design and performance of the XENON10 dark matter experiment

Aprile

Angle

Arneodo

et al. 2011

Astroparticle Physics

Self Cite

120

184

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“…In addition, for xenon in the gas phase, the ionization fluctuations are characterized by a small intrinsic Fano factor [1], permitting accurate calorimetry using the ionization signal alone. For these reasons, xenon-based detectors are used for a variety of applications in fundamental and applied physics, including searches for WIMP dark matter direct detection [2 -5] double beta [6] and lepton-flavor-violating [7] decays, as well as X-ray astronomy [8], gamma-ray astronomy [9], and medical imaging [10,11]. The scintillation (often called S1) and ionization (S2) signals measured by xenon-based detectors depend on the production rate of excited atoms Xe * and electron-ion pairs e − -Xe + produced by ionizing radiation, as well as on the electron-ion recombination strength.…”

Section: Introductionmentioning

confidence: 99%

Ionization and scintillation response of high-pressure xenon gas to alpha particles

et al. 2013

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High-pressure xenon gas is an attractive detection medium for a variety of applications in fundamental and applied physics. In this paper we study the ionization and scintillation detection properties of xenon gas at 10 bar pressure. For this purpose, we use a source of alpha particles in the NEXT-DEMO time projection chamber, the large scale prototype of the NEXT-100 neutrinoless double beta decay experiment, in three different drift electric field configurations. We measure the ionization electron drift velocity and longitudinal diffusion, and compare our results to expectations based on available electron scattering cross sections on pure xenon. In addition, two types of measurements addressing the connection between the ionization and scintillation yields are performed. On the one hand we observe, for the first time in xenon gas, large event-by-event correlated fluctuations between the ionization and scintillation signals, similar to that already observed in liquid xenon. On the other hand, we study the field dependence of the average scintillation and ionization yields. Both types of measurements may shed light on the mechanism of electron-ion recombination in xenon gas for highly-ionizing particles. Finally, by comparing the response of alpha particles and electrons in NEXT-DEMO, we find no evidence for quenching of the primary scintillation light produced by alpha particles in the xenon gas.-2 -

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“…A liquid xenon TPC shows a poor performance here, in contrast with its use as a Compton telescope [19].…”

Section: Angular Resolution: a Summarymentioning

confidence: 79%

TPC in γ-ray astronomy above pair-creation threshold

Bernard¹

2013

Nuclear Instruments and Methods in Physics Research Section A:

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We examine the performance of a TPC as a γ-ray telescope above the pair-creation threshold. The contributions to the photon angular resolution are studied and their dependence on energy is obtained. The effective area per detector unit mass for such a thin detector is the conversion mass attenuation coefficient. The differential sensitivity for the detection of a point-like source is then derived. Finally, the measurement of track momentum from deflections due to multiple scattering is optimized.These analytical results are exemplified numerically for a few sets of detector parameters. TPCs show an impressive improvement in sensitivity with respect to existing pair-creation-based telescopes in the [MeV -GeV] energy range, even with the modest detector parameters of this study. In addition, gas TPCs allow an improvement in angular resolution of about one order of magnitude.

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Compton imaging of MeV gamma-rays with the Liquid Xenon Gamma-Ray Imaging Telescope (LXeGRIT)

Cited by 47 publications

References 13 publications

Design and performance of the XENON10 dark matter experiment

Design and performance of the XENON10 dark matter experiment

Ionization and scintillation response of high-pressure xenon gas to alpha particles

TPC in γ-ray astronomy above pair-creation threshold

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