Progress in fabrication of long transparent YAG:Ce and YAG:Ce,Mg single crystalline fibers for HEP applications

Sidletskiy, O.; Lebbou, Kheirréddine; Kofanov, D.; Kononets, V.; Gerasymov, Iaroslav; Bouaita, R.; Jarý, V.; Kučerková, Romana; Nikl, M.; Polesel, Andrea; Pauwels, K.; Auffray, E.

doi:10.1039/c8ce01781f

Cited by 19 publications

(15 citation statements)

References 8 publications

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“…This phenomenon is similar to the segregation of rare earth dopants (Nd, Ce) in laser and scintillating YAG single crystal growth. 73,74 At the rst step of the growth, the solidication process is close to the Al 2 O 3 -YAG binary eutectic system. 35,75 By increasing the pulling rate (v > 0.07 mm min À1 ), most of the ZrO 2 accumulated in the interface start to nucleate in the eutectic.…”

Section: Discussionmentioning

confidence: 94%

The impact of the composition and solidification rate on the microstructure and the crystallographic orientations of Al₂O₃–YAG–ZrO₂ eutectic solidified by the micro-pulling down technique

Benamara

Lebbou

2021

RSC Adv.

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Section: Discussionmentioning

confidence: 94%

The impact of the composition and solidification rate on the microstructure and the crystallographic orientations of Al₂O₃–YAG–ZrO₂ eutectic solidified by the micro-pulling down technique

Benamara

Lebbou

2021

RSC Adv.

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“…[132] Given that the color center defects in garnet crystals easily cause unexpected additional absorption, Sidletskiy et al introduced a combinative strategy to enhance the light attenuation length of YAG fiber-derived structured scintillator. [133] By rational introduction of excess Al, optimization of thermal conditions of crystallization, and postgrowth annealing, fiber smoothness, and crystallization stability could be considerably improved, and a 380 mm light attenuation length could be achieved in a modified sample. YAP is also a promising scintillating scintillator for its high light yield and good mechanical and chemical properties.…”

Section: Crystal Fiber-derived Structured Scintillatorsmentioning

confidence: 99%

“…For X-ray or gamma ray, radiation-material interaction probability, namely, radiation stopping power, increases with scintillator density and effective atomic number (Z). While for uncharged neutrons, neutron-material interaction probability, normally known as neutron cross-section, is element and isotope ( 3 He, 6 Li, 10 B, 133 Cd, 155 Gd, and 157 Gd) dependent. As a consequence of the conversion stage, hot electrons and deep holes are formed and gradually thermalized.…”

Section: Introductionmentioning

confidence: 99%

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Structured Scintillators for Efficient Radiation Detection

Lin

Yang

et al. 2021

Advanced Science

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Scintillators, which can convert high‐energy ionizing radiation into visible light, have been serving as the core component in radiation detectors for more than a century of history. To address the increasing application demands along with the concern on nuclear security, various strategies have been proposed to develop a next‐generation scintillator with a high performance in past decades, among which the novel approach via structure control has received great interest recently due to its high feasibility and efficiency. Herein, the concept of “structure engineering” is proposed for the exploration of this type of scintillators. Via internal or external structure design with size ranging from micro size to macro size, this promising strategy cannot only improve scintillator performance, typically radiation stopping power and light yield, but also extend its functionality for specific applications such as radiation imaging and therapy, opening up a new range of material candidates. The research and development of various types of structured scintillators are reviewed. The current state‐of‐the‐art progresses on structure design, fabrication techniques, and the corresponding applications are discussed. Furthermore, an outlook focusing on the current challenges and future development is proposed.

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“…In parallel, new crystal production techniques tailored to provide higher quality and more granular crystals at a contained cost have also been developed (e.g. MPD and transparent ceramics) [36,37].…”

Section: Segmented Crystal Ecal Featuresmentioning

confidence: 99%

New perspectives on segmented crystal calorimeters for future colliders

Lucchini,

Chung,

Eno

et al. 2020

Preprint

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Crystal calorimeters have a long history of pushing the frontier on high-resolution electromagnetic (EM) calorimetry for photons and electrons. We explore in this paper major innovations in collider detector performance that can be achieved with crystal calorimetry when longitudinal segmentation and dual-readout capabilities are combined with a new high EM resolution approach to PFA in multi-jet events, such as e + e + → H Z events in all-hadronic final-states at Higgs factories. We demonstrate a new technique for pre-processing π 0 momenta through combinatoric di-photon pairing in advance of applying jet algorithms. This procedure significantly reduces π 0 photon splitting across jets in multi-jet events. The correct photon-to-jet assignment efficiency improves by a factor of about 3 when the EM resolution is improved from 15 to 3%/ √ E. In addition, the technique of bremsstrahlung photon recovery significantly improves electron momentum measurements. A high EM resolution calorimeter increases the Z boson recoil mass resolution in Higgstrahlung events for decays into electron pairs to 80% of that for muon pairs. We present the design and optimization of a highly segmented crystal detector concept that achieves the required energy resolution of 3%/ √ E, and a time resolution better than 30 ps providing exceptional particle identification capabilities. We demonstrate that, contrary to previous detector designs that suffered from large neutral hadron resolution degradation from one interaction length of crystals in front of a sampling hadron calorimeter, the implementation of dual-readout on crystals permits to achieve a resolution better than 30%/ √ E ⊕ 2% for neutral hadrons. Our studies find that the integration of crystal calorimetry into future Higgs factory collider detectors can open new perspectives by yielding the highest level of combined EM and neutral hadron resolution in the PFA paradigm.

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Progress in fabrication of long transparent YAG:Ce and YAG:Ce,Mg single crystalline fibers for HEP applications

Abstract: A significant enhancement in the light attenuation length in 22–55 cm long YAG:Ce and YAG:Ce,Mg fibers grown by the micro-pulling-down method has been reported.

Cited by 19 publications

References 8 publications

The impact of the composition and solidification rate on the microstructure and the crystallographic orientations of Al₂O₃–YAG–ZrO₂ eutectic solidified by the micro-pulling down technique

The impact of the composition and solidification rate on the microstructure and the crystallographic orientations of Al₂O₃–YAG–ZrO₂ eutectic solidified by the micro-pulling down technique

Structured Scintillators for Efficient Radiation Detection

New perspectives on segmented crystal calorimeters for future colliders

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Progress in fabrication of long transparent YAG:Ce and YAG:Ce,Mg single crystalline fibers for HEP applications

Abstract: A significant enhancement in the light attenuation length in 22–55 cm long YAG:Ce and YAG:Ce,Mg fibers grown by the micro-pulling-down method has been reported.

Cited by 19 publications

References 8 publications

The impact of the composition and solidification rate on the microstructure and the crystallographic orientations of Al2O3–YAG–ZrO2 eutectic solidified by the micro-pulling down technique

The impact of the composition and solidification rate on the microstructure and the crystallographic orientations of Al2O3–YAG–ZrO2 eutectic solidified by the micro-pulling down technique

Structured Scintillators for Efficient Radiation Detection

New perspectives on segmented crystal calorimeters for future colliders

Contact Info

Product

Resources

About

The impact of the composition and solidification rate on the microstructure and the crystallographic orientations of Al₂O₃–YAG–ZrO₂ eutectic solidified by the micro-pulling down technique

The impact of the composition and solidification rate on the microstructure and the crystallographic orientations of Al₂O₃–YAG–ZrO₂ eutectic solidified by the micro-pulling down technique