Development of a position-sensitive scintillation neutron detector for a new protein single-crystal diffractometer at J-PARC MLF

Nakamura, Tatsuya; Toh, K.; Tsutsui, Nao; Ebine, M.; Birumachi, A.; Sakasai, K.

doi:10.1088/1748-0221/12/12/c12025

Cited by 4 publications

(4 citation statements)

References 16 publications

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“…One of the first 2D scintillator-based neutron detectors for singlecrystal diffraction was developed at ISIS (Rhodes et al, 1997) for SXD (Keen et al, 2006). Similar detectors have been developed at other neutron facilities over the past few years: large-area wavelength-shifting-fibre scintillator detectors (Crow et al, 2004;Wang et al, 2011) and neutron Anger cameras (Riedel et al, 2015) at SNS, and several 2D neutron detectors using 10 B/ZnS:Ag and 6Li/ZnS:Ag screens coupled to wavelength-shifting fibres at J-PARC (Hosoya et al, 2009;Sakasai et al, 2009;Nakamura et al, 2012Nakamura et al, , 2017Kawasaki et al, 2014). Other neutron-detector technologies have been developed and employed for neutron diffraction: gaseous-based neutron detectors including the microstrip gas chamber and curved multiwire proportional chambers (Buffet et al, 2005) at the ILL for the D20 and D1B diffractometers (Hansen et al, 2008;Orench et al, 2014), and boron-based detectors (Modzel et al, 2014) for diffractometers at ESS (Stefanescu et al, 2017(Stefanescu et al, , 2019.…”

Section: Introductionmentioning

confidence: 99%

Novel high-efficiency 2D position-sensitive ZnS:Ag/⁶LiF scintillator detector for neutron diffraction

Mauri,

Sykora,

Schooneveld

et al. 2024

J Appl Cryst

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Scintillator-based ZnS:Ag/6LiF neutron detectors have been under development at ISIS for more than three decades. Continuous research and development aim to improve detector capabilities, achieve better performance and meet the increasingly demanding requirements set by neutron instruments. As part of this program, a high-efficiency 2D position-sensitive scintillator detector with wavelength-shifting fibres has been developed for neutron-diffraction applications. The detector consists of a double scintillator-fibre layer to improve detection efficiency. Each layer is made up of two orthogonal fibre planes placed between two ZnS:Ag/6LiF scintillator screens. Thin reflective foils are attached to the front and back scintillators of each layer to minimize light cross-talk between layers. The detector has an active area of 192 × 192 mm with a square pixel size of 3 × 3 mm. As part of the development process of the double-layer detector, a single-layer detector was built, together with a prototype detector in which the two layers of the detector could be read out separately. Efficiency calculations and measurements of all three detectors are discussed. The novel double-layer detector has been installed and tested on the SXD diffractometer at ISIS. The detector performance is compared with the current scintillator detectors employed on SXD by studying reference crystal samples. More than a factor of 3 improvement in efficiency is achieved with the double-layer wavelength-shifting-fibre detector. Software routines for further optimizations in spatial resolution and uniformity of response have been implemented and tested for 2D detectors. The methods and results are discussed in this manuscript.

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Section: Introductionmentioning

confidence: 99%

Novel high-efficiency 2D position-sensitive ZnS:Ag/⁶LiF scintillator detector for neutron diffraction

Mauri,

Sykora,

Schooneveld

et al. 2024

J Appl Cryst

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“…[1][2][3] Advanced scintillation-based technologies such as X-ray radiation detection and imaging have played irreplaceable roles in the fields of medical diagnosis, nondestructive inspection, DOI: 10.1002/lpor.202301249 crystallographic analysis, and artwork restoration. [4][5][6][7] In recent years, various organic-inorganic hybrid metal halides (OIMHs) have been introduced into the family of scintillation materials with much interest owing to their structural tunability and fascinating photoelectronic properties. Compared to commercial inorganic scintillators that require high temperatures and inert atmospheres to be synthesized, the lowtemperature processable OIMH materials are considered promising candidates for next-generation scintillators.…”

Section: Introductionmentioning

confidence: 99%

Guanidinium‐Based Manganese(II) Bromide with High Glass‐Forming Ability for Thermoplastic Curved X‐ray Imaging

He,

Wei,

Luo

et al. 2024

Laser & Photonics Reviews

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The development of large‐area transparent organic‐inorganic hybrid metal halide (OIMH) scintillation screens is restricted by the anisotropic single‐crystal growth, numerous grain boundaries in polycrystalline wafers, and inhomogeneous dispersion in perovskite‐polymer composite films. The crystal‐glass phase transition of OIMH materials may provide a promising solution for the above significant challenges. Herein, a new class of transparent amorphous guanidinium‐based manganese bromide glasses, (DPG)2MnBr4 and (DOTG)2MnBr4 (DPG = 1,3‐diphenylguanidinium, DOTG = 1,3‐di‐o‐tolylguanidinium), are synthesized through a low‐temperature melt‐quenching process. The (DOTG)2MnBr4 shows impressive glass‐forming ability because of large viscosity (η) at the melting temperature (Tm) (η(Tm) = 3426 mPa·s) and small fragility index (m = 52.35), which can be a potential glass scintillator. The large‐area (e.g., 13 cm × 13 cm) transparent amorphous (DOTG)2MnBr4 glass scintillator shows high light transmittance of > 80%, a low detection limit of 237.3 nGy s−1 and high X‐ray imaging spatial resolution of 12 lp mm−1. Interestingly, the glass transition temperature of < 40 °C gives (DOTG)2MnBr4 glass unique thermoplastic properties, allowing it to conform to irregularly shaped objects and reduce the distortion in X‐ray imaging.

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“…At SNS, a largearea linear position-sensitive detector for powder diffractometers [19] has been developed and improved [20,21], using a coincidence-coding method first implemented at ISIS [22]. Position-sensitive WLSF scintillator neutron detectors have been developed at J-PARC for neutron imaging [23], for the engineering material diffractometer [24] and for single-crystal diffractometers [25][26][27][28]. All these detectors operate in photon-counting mode, which has been developed and used to readout the ISIS scintillation detectors [29].…”

Section: Introductionmentioning

confidence: 99%

Enhanced position resolution for ZnS:Ag/$$^6$$LiF wavelength shifting fibre thermal neutron detectors

et al. 2021

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The high neutron intensity, improvements in neutron delivery and increasingly more complex experiments at neutron scattering facilities, i.e. J-PARC, SNS, ISIS, CSNS and ESS, which is presently under construction, drive the development of neutron scattering instruments and their associated detectors. High position resolution is one of the most demanding detector requirements and is particularly relevant of neutron reflectometry applications. Scintillator detectors using ZnS:Ag/$$^6$$ 6 LiF coupled to wavelength shifting fibre (WLSF) are currently employed in several neutron scattering facilities, including J-PARC, SNS, ISIS and CSNS. For WLSF-based scintillation detectors, the position reconstruction is routinely achieved by determining the combination of fibres that absorb scintillation light. The use of position reconstruction algorithms, analysing light spread in the system, leads to an increase in the position resolution. The optimisation of a centre of gravity interpolation method for linear position-sensitive detectors has been developed, and a factor 2 improvement in position sensitivity has been achieved. The investigation of the light spread over the fibres and the detector performance in correlation with the reconstructed position resolution are discussed.

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Development of a position-sensitive scintillation neutron detector for a new protein single-crystal diffractometer at J-PARC MLF

Cited by 4 publications

References 16 publications

Novel high-efficiency 2D position-sensitive ZnS:Ag/⁶LiF scintillator detector for neutron diffraction

Novel high-efficiency 2D position-sensitive ZnS:Ag/⁶LiF scintillator detector for neutron diffraction

Guanidinium‐Based Manganese(II) Bromide with High Glass‐Forming Ability for Thermoplastic Curved X‐ray Imaging

Enhanced position resolution for ZnS:Ag/$$^6$$LiF wavelength shifting fibre thermal neutron detectors

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Development of a position-sensitive scintillation neutron detector for a new protein single-crystal diffractometer at J-PARC MLF

Cited by 4 publications

References 16 publications

Novel high-efficiency 2D position-sensitive ZnS:Ag/6LiF scintillator detector for neutron diffraction

Novel high-efficiency 2D position-sensitive ZnS:Ag/6LiF scintillator detector for neutron diffraction

Guanidinium‐Based Manganese(II) Bromide with High Glass‐Forming Ability for Thermoplastic Curved X‐ray Imaging

Enhanced position resolution for ZnS:Ag/$$^6$$LiF wavelength shifting fibre thermal neutron detectors

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Novel high-efficiency 2D position-sensitive ZnS:Ag/⁶LiF scintillator detector for neutron diffraction

Novel high-efficiency 2D position-sensitive ZnS:Ag/⁶LiF scintillator detector for neutron diffraction