Calorimeter Designs Based on Fibre-Shaped Scintillators

Pauwels, K.; Lucchini, M. T.; Benaglia, A.; Auffray, E.

doi:10.1007/978-3-319-68465-9_14

Cited by 3 publications

(3 citation statements)

References 24 publications

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“…In some cases, scintillators based on rare-earth (RE)-doped glass matrices were demonstrated to be a valid alternative to single crystals. − At first developed for remote real-time dosimetry in radiology and radiotherapy, − recently, scintillating silica fibers were explored as candidates for the dual-readout calorimetry approach in high-energy physics, − exploiting the simultaneous detection of scintillation and Cherenkov light as a possible way to improve the energy resolution of calorimetric detectors . Quartz fibers were also considered as wavelength shifters for the collection and transport of light in high-energy physics experiments …”

Section: Introductionmentioning

confidence: 99%

Trapping Mechanisms and Delayed Recombination Processes in Scintillating Ce-Doped Sol–Gel Silica Fibers

et al. 2021

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The carrier trapping and recombination mechanisms occurring in Ce-doped silica fibers, produced by a sol−gel technique, are investigated by combining temperature-dependent steady-state X-ray-excited luminescence, wavelength-and timeresolved scintillation measurements, and wavelength-resolved thermally stimulated luminescence, focusing especially on the temperature range from 10 to 320 K. The scintillation decay features a decay time of the order of tens of nanoseconds, characteristic of the parity-and spin-allowed 5d−4f radiative transition of Ce 3+ ions. In addition, a slow and complex decay contribution in the microsecond timescale is detected. We interpret these features as due to the radiative recombination at Ce centers of carriers freed from a continuous distribution of trapping sites in the forbidden gap as well as to the occurrence of an athermal tunneling recombination process between traps and Ce 3+ ions. This interpretation is reinforced by good agreement between independent evaluations of trap depths and lifetimes obtained by both the numerical analysis of scintillation time decays and thermally stimulated luminescence experiments.

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Section: Introductionmentioning

confidence: 99%

Trapping Mechanisms and Delayed Recombination Processes in Scintillating Ce-Doped Sol–Gel Silica Fibers

et al. 2021

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“…It is attenuated as it propagates through the scintillator. The most straightforward approach to describe scintillating light propagation in the scintillator assumes exponential attenuation [23,24], where the parameter 𝜆 represents the attenuation length i.e. the distance into the material where the intensity of scintillating light drops by a factor of 𝑒.…”

Section: Exponential Light Attenuation Model (Ela)mentioning

confidence: 99%

A systematic study of LYSO:Ce, LuAG:Ce and GAGG:Ce scintillating fibers properties

et al. 2021

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Properties of different scintillating fibers were examined and compared, as a part of the design optimization of the SiFi-CC detector, currently under development for proton therapy monitoring. Three scintillating materials were considered as candidates to constitute the active part of the detector: LYSO:Ce, LuAG:Ce and GAGG:Ce. All investigated samples had an elongated, fiber-like shape and were read out on both ends using silicon photomultipliers (SiPMs). Samples of LYSO:Ce material provided by four different manufacturers were included in the survey. Additionally, different types of optical coupling media, wrapping and coating materials were investigated. The following properties of the scintillating fibers were determined: attenuation length, position-, energy-, timing resolution and light collection. Two models were used to describe the propagation of scintillating light in the fiber and quantify the light attenuation: exponential light attenuation model (ELA) and exponential light attenuation model with light reflection (ELAR). Energy and position reconstruction were also performed using the two above methods. It was shown, that the ELAR model performs better in terms of description of the light attenuation process. However, energy and position reconstruction results are comparable for the two proposed methods. Based on the results of measurements with scintillating fibers in different configurations we concluded that LYSO:Ce fibers wrapped in Al foil (bright side facing towards the fiber) provided the best trade-off between the energy- (8.56% at 511 keV) and position (32 mm) resolutions and thus will be the optimal choice for the SiFi-CC detector. Additionally, the study of different optical coupling media showed, that the silicone pads coupling ensures good stability of the system performance and parameters.

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“…[ 8 ] They can also be engineered by the addition of divalent ions to optimize their scintillation kinetics and make them suitable for high rate applications. [ 9 ] Among the high‐performance scintillators, Ce‐activated scintillators gain attention due to its allowed 4 f →5 d excitation followed by 5 d →4 f emission. In many host lattices, Ce 3+ ion showed a high light yield, excellent energy resolution, and fast decay.…”

Section: Introductionmentioning

confidence: 99%

Effect of Ce³⁺Content and Annealing Temperature on the Optical and Scintillation Properties of Ce³⁺‐Doped Y₃Al₅O₁₂Nanoscintillator Synthesized by Sol–Gel Route

Zahra

Guerbous

Bousbia-Salah

et al. 2023

Physica Status Solidi (a)

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Radiation detection is important in several fields, including defense, medicine (e.g., PET, CT scans), material testing, environmental hazard monitoring, security checks at harbors, airports, and borders. [1] Scintillator materials are used as radiation sensors for many gamma ray and X-ray applications. [2][3][4] In order to develop faster and more efficient methods for radiation detection, progress in materials is a critical component of any successful strategy. The physical and luminescent properties of scintillator materials are very sensitive to the synthesis parameters, [5,6] and these characteristics must be tailored to satisfy the specific requirements for each application. Currently, Na(Tl) and CsI(Tl) single crystal scintillators are widely used in nuclear spectroscopy and radiation detection. Moreover, many types of scintillators have been investigated such as alkali, alkaline earth as BaF 2 :Ce, CaF

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Calorimeter Designs Based on Fibre-Shaped Scintillators

Abstract: to be published Engineering of Scintillation Materials and Radiation Technologies, M. Korzhik and A. Gektin (eds.

Cited by 3 publications

References 24 publications

Trapping Mechanisms and Delayed Recombination Processes in Scintillating Ce-Doped Sol–Gel Silica Fibers

Trapping Mechanisms and Delayed Recombination Processes in Scintillating Ce-Doped Sol–Gel Silica Fibers

A systematic study of LYSO:Ce, LuAG:Ce and GAGG:Ce scintillating fibers properties

Effect of Ce³⁺Content and Annealing Temperature on the Optical and Scintillation Properties of Ce³⁺‐Doped Y₃Al₅O₁₂Nanoscintillator Synthesized by Sol–Gel Route

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Calorimeter Designs Based on Fibre-Shaped Scintillators

Abstract: to be published Engineering of Scintillation Materials and Radiation Technologies, M. Korzhik and A. Gektin (eds.

Cited by 3 publications

References 24 publications

Trapping Mechanisms and Delayed Recombination Processes in Scintillating Ce-Doped Sol–Gel Silica Fibers

Trapping Mechanisms and Delayed Recombination Processes in Scintillating Ce-Doped Sol–Gel Silica Fibers

A systematic study of LYSO:Ce, LuAG:Ce and GAGG:Ce scintillating fibers properties

Effect of Ce3+Content and Annealing Temperature on the Optical and Scintillation Properties of Ce3+‐Doped Y3Al5O12Nanoscintillator Synthesized by Sol–Gel Route

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Effect of Ce³⁺Content and Annealing Temperature on the Optical and Scintillation Properties of Ce³⁺‐Doped Y₃Al₅O₁₂Nanoscintillator Synthesized by Sol–Gel Route