Radioactive contamination of BaF<sub>2</sub>crystal scintillator

Belli, P.; Bernabei, R.; Cappella, F.; Caracciolo, V.; Cerulli, R.; Marco, Alessandro Di; Danevich, F.A.; Incicchitti, A.; Poda, D.V.; Polischuk, O. G.; Tretyak, V. I.

doi:10.1051/epjconf/20136504004

Cited by 3 publications

(2 citation statements)

References 9 publications

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“…The events were selected using the signal shape identification method. Superimposed as a continuous red line on the plot is the fit function built from α decays of 228 Ra and 226 Ra as in [13,14]. The labels indicate the major contributions to the spectrum, which stem from the 226 Ra decay chain.…”

Section: Figurementioning

confidence: 99%

A Characterization System for the Monitoring of ELI-NP Gamma Beam

Borgheresi

Adriani

Albergo

et al. 2019

The 7th International Conference on New Frontiers in Physics

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The ELI-NP (Extreme Light Infrastructure-Nuclear Physics) facility, currently under construction near Bucharest (Romania), is the pillar of the project ELI dedicated to the generation of high-brilliance gamma beams and high-power laser pulses that will be used for frontier research in nuclear physics. To develop an experimental program at the frontiers of the present-day knowledge, two pieces of equipment will be deployed at ELI-NP: a high power laser system consisting of two 10 PW lasers and a high brilliance gamma beam system. The ELI-NP Gamma beam system will deliver an intense gamma beam with unprecedented specifications in terms of photon flux, brilliance and energy bandwidth in an energy range from 0.2 to 20 MeV. Such a gamma beam requires special devices and techniques to measure and monitor the beam parameters during the commissioning and the operational phase. To accomplish this task, the Gamma Beam Characterization System, equipped with four elements, was developed: a Compton spectrometer (CSPEC), to measure and monitor the photon energy spectrum; a nuclear resonant scattering system (NRSS), for absolute beam energy calibration and inter-calibration of the other detectors; a beam profile imager (GPI) to be used for alignment and diagnostics purposes; and finally a sampling calorimeter (GCAL), for a fast combined measurement of the beam average energy and intensity. The combination of the measurements performed by GCAL and CSPEC allows fully characterizing the gamma beam energy distribution and intensity with a precision at the level of few per mill, enough to demonstrate the fulfillment of the required parameters. This article presents an overview of the gamma beam characterization system with focus on these two detectors, which were designed, assembled and are currently under test at INFN-Firenze. The layout and the working principle of the four devices is described, as well as some of the main results of detector tests.

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Section: Figurementioning

confidence: 99%

A Characterization System for the Monitoring of ELI-NP Gamma Beam

Borgheresi

Adriani

Albergo

et al. 2019

The 7th International Conference on New Frontiers in Physics

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“…Besides, it is possible to detect a dark matter candidate through the inelastic scattering processes on the electron or on the nucleus targets [27][28][29]. BaF 2 has capability of making such detection, while the residual contamination of BaF 2 is the real issue that prevented it from being used in low background measurements [30,31]. We report our neutron beam test of BaF 2 in this paper.…”

Section: Introductionmentioning

confidence: 99%

Neutron beam test of barium fluoride crystal for dark matter direct detection

Guo

Wang

et al. 2016

Nuclear Instruments and Methods in Physics Research Section A:

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In order to test the capabilities of Barium Fluoride (BaF 2 ) Crystal for dark matter direct detection, nuclear recoils are studied with mono-energetic neutron beam. The energy spectra of nuclear recoils, quenching factors for elastic scattering neutrons and discrimination capability between neutron inelastic scattering events and γ events are obtained for various recoil energies of the F content in BaF 2 .

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