Energy resolution and nonlinearity of NaI(Tl), CaF&lt;inf&gt;2&lt;/inf&gt;(Eu), and plastic scintillators measured with the wide-angle Compton-coincidence technique

Roemer, K.; Pausch, G.; Herbach, Claus-Michael; Kapusta, M.; Kong, Yong Lin; Lentering, Ralf; Plettner, C.; Stein, J.; Moszyński, M.; Świderski, Ł.; Szczesnik, Tomasz

doi:10.1109/nssmic.2010.5873827

Cited by 7 publications

(8 citation statements)

References 13 publications

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“…It is evident that the nonproportionality must be corrected for in the calibration function of CaF 2 (Eu) scatter detectors. Non-proportionality for CaF 2 (Eu) was also recently measured by using the complementary Wide Angle Compton Coincidence method [14].…”

Section: Non-proportionalitymentioning

confidence: 99%

CaF₂(Eu): an ``old'' scintillator revisited

Plettner¹,

Pausch²,

Scherwinski³

et al. 2013

J. Inst.

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Homeland security applications demand performant two-plane Compton-camera systems, with high detector efficiency, good nuclide identification and able to perform in-field conditions. A low-Z scintillator has been proposed and studied as a promising candidate for use in the scattering plane of a scintillator-based Compton camera: CaF 2 (Eu) [1].All the relevant properties for the application of this scintillator in a mobile Compton camera system, have been addressed: the energy resolution and the non-proportionality at room temperature and in the temperature range of -20 • C to +55 • C, the photoelectron yield and the relative light yield in the relevant temperature range. A new method of inferring the relative light output of scintillators has been proposed.

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Section: Non-proportionalitymentioning

confidence: 99%

CaF₂(Eu): an ``old'' scintillator revisited

Plettner¹,

Pausch²,

Scherwinski³

et al. 2013

J. Inst.

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“…All scintillator measurements used digitizer cards programmed with the CAEN DPP-PSD (digital pulse processing for charge integration and pulse shape discrimination) firmware. For the wide-angle Compton coincidence method [41,42] outlined in 2.3, an additional digitizer operating DPP-PHA (digital pulse processing for pulse height analysis) firmware was daisy-chained to the DPP-PSD digitizers to process signals from a high-purity germanium (HPGe) detector. Data read out but the data acquisition software was then saved as list-mode data in the form of a ROOT tree [43].…”

Section: Data Acquisitionmentioning

confidence: 99%

“…Two variations of this technique were used in this work. The first method, shown in figure 1(a), is known as wide-angle Compton coincidence (WACC) [41,42]. This method used an energy-4CAEN S.p.A., Via Vetraia 11, 55049 Viareggio (LU), Italy.…”

Section: Energy Calibration and Resolutionmentioning

confidence: 99%

Characterization of organic glass scintillator bars and their potential for a hybrid neutron/gamma ray imaging system for proton radiotherapy range verification

Turko,

Beyer,

Junghans

et al. 2024

J. Inst.

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For accurate and simultaneous imaging of fast neutrons (FNs) and prompt gamma rays (PGs) produced during proton therapy, the selection of a highly performant detector material is crucial. In this work, a promising candidate material known as organic glass scintillator (OGS) is characterized for this task. To this end, a precisely-timed source of neutrons and Bremsstrahlung radiation produced by the nELBE facility was used to study the light output and neutron/gamma ray pulse shape discrimination (PSD) properties of a 1 × 1 × 20 cm3 OGS bar with double-sided readout. Furthermore, the energy, timing, and depth-of-interaction (DOI) resolutions of 1 × 1 × 10 cm3 and 1 × 1 × 20 cm3 OGS and EJ-200 bars were characterized with radioactive sources. For electron-equivalent energies above 0.5 MeVee, OGS was found to have excellent PSD capabilities (figure-of-merit above 1.27), energy resolution (below 12%), coincident time resolution (below 500 ps), and DOI resolution (below 10 mm). This work establishes the data analysis methods required for hybrid FN/PG imaging using OGS, and demonstrates the materials' excellent performance for this application.

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“…Current capabilities of MPPost do not allow for the input of multiple light output coefficients and using the fit for the 7.6 cm thick  7.6 cm diameter detectors was found to give better agreement with measurements than the fit found for the 5.1 cm thick  The coefficients found for this equation by Enqvist et al were only given for the 7.6 cm thick  7.6 cm diameter detectors in the DPI so these coefficients were also applied to the 5.1 cm thick  5.1 cm diameter detectors. The energy resolution used for the NaI(Tl) scintillators was given by Roemer et al as where FWHM is the full width at half maximum at energy E [19]. Timing resolution of the detectors was also included in the simulations.…”

Section: Measurement and Simulation Of Dpi Resolutionmentioning

confidence: 99%

Stochastic image reconstruction for a dual-particle imaging system

Hamel

Polack

Poitrasson-Rivière

et al. 2016

Nuclear Instruments and Methods in Physics Research Section A:

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Stochastic image reconstruction has been applied to a dual-particle imaging system being designed for nuclear safeguards applications. The dual-particle imager (DPI) is a combined Compton-scatter and neutron-scatter camera capable of producing separate neutron and photon images. The stochastic origin ensembles (SOE) method was investigated as an imaging method for the DPI because only a minimal estimation of system response is required to produce images with quality that is comparable to common maximum-likelihood methods. This work contains neutron and photon SOE image reconstructions for a 252 Cf point source, two mixed-oxide (MOX) fuel canisters representing point sources, and the MOX fuel canisters representing a distributed source. Simulation of the DPI using MCNPX-PoliMi is validated by comparison of simulated and measured results. Because image quality is dependent on the number of counts and iterations used, the relationship between these quantities is investigated.

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Energy resolution and nonlinearity of NaI(Tl), CaF<inf>2</inf>(Eu), and plastic scintillators measured with the wide-angle Compton-coincidence technique

Cited by 7 publications

References 13 publications

CaF₂(Eu): an ``old'' scintillator revisited

CaF₂(Eu): an ``old'' scintillator revisited

Characterization of organic glass scintillator bars and their potential for a hybrid neutron/gamma ray imaging system for proton radiotherapy range verification

Stochastic image reconstruction for a dual-particle imaging system

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Energy resolution and nonlinearity of NaI(Tl), CaF<inf>2</inf>(Eu), and plastic scintillators measured with the wide-angle Compton-coincidence technique

Cited by 7 publications

References 13 publications

CaF2(Eu): an ``old'' scintillator revisited

CaF2(Eu): an ``old'' scintillator revisited

Characterization of organic glass scintillator bars and their potential for a hybrid neutron/gamma ray imaging system for proton radiotherapy range verification

Stochastic image reconstruction for a dual-particle imaging system

Contact Info

Product

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CaF₂(Eu): an ``old'' scintillator revisited

CaF₂(Eu): an ``old'' scintillator revisited