Development of aluminum (Al5083)-clad ternary Ag–In–Cd alloy for JSNS decoupled moderator

Teshigawara, Makoto; Harada, Masahide; Saito, Shigeru; Oikawa, Kenichi; Maekawa, Fujio; Futakawa, Masatoshi; Kikuchi, Kenji; Kato, Takashi; Ikeda, Yujiro; Naoe, Tomoki; Koyama, Tomofumi; Ooi, Toshihiko; Zherebtsov, Sergey; Kawai, Masayoshi; Kurishita, Hiroaki; Konashi, Kenji

doi:10.1016/j.jnucmat.2006.05.017

Cited by 11 publications

(4 citation statements)

References 3 publications

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“…Fig. 4 shows the simulated results of neutron intensity for the different decoupling energy to the neutrons with energy of 100meV [3]. It is found that a sharp-pulsed neutron beam prefers higher Ed.…”

Section: Neutron Spectrum At Target Reflector and Moderatormentioning

confidence: 99%

A Challenge for a High-Resolution Ag-In-Cd Decoupler in Intensified Short-Pulsed Neutron Source

Kikuchi

Teshigawara

Harada

et al. 2010

MSF

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A sharp pulsed-neutron beam, which has narrow width and large attenuation, will enhance ability to separate peak position diffracted from crystal structure in time-of-flight measurement method. Traditional technique to satisfy the request above is to use Boron for decoupling higher cut-off energy. Disadvantage, however, will be an excess formation of He bubbles and large heat deposition in the materials as a result of (n,α) reaction, particularly in a MW class of neutron source. Alternative is to use a material combination of Ag-In-Cd, which has different energies for resonance absorption and often used in the control rod of pressurized water reactors with cladding stainless steel. For application of this material to pulsed-neutron source a challenge is to make sandwiches structure with Al alloy because a moderator is made of this material from points of views of heat removing. Technically hot isostatic pressing was a choice and devoted to realize a bonding strength through R&Ds. Final product was set up to MLF /J-PARC and a successful resolution was observed in a powder diffractometer.

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Section: Neutron Spectrum At Target Reflector and Moderatormentioning

confidence: 99%

A Challenge for a High-Resolution Ag-In-Cd Decoupler in Intensified Short-Pulsed Neutron Source

Kikuchi

Teshigawara

Harada

et al. 2010

MSF

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“…Higher cut-off energy, which is called decoupling energy (Ed), gives a shorter decay time [49]. At J-PARC, neutron beam users required at least 1 eV decoupling energy for high-resolution neutron scattering experiments in the design stage.…”

mentioning

confidence: 99%

“…In view of heat removal and corrosion protection, however, there was the issue that the Ag-In-Cd plate has to be bonded to the Al alloy (A5083), the structural material of a moderator and reflector. We succeeded to implement Ag-In-Cd alloy into the moderator-reflector as a decoupler by adopting HIP (Hot Isostatic Pressing) method [49,51,52]. In order to validate neutronic performance of the Ag-In-Cd decoupler, the pulse shape was observed in the rise and tail part of the Bragg peaks.…”

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confidence: 99%

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Materials and Life Science Experimental Facility at the Japan Proton Accelerator Research Complex I: Pulsed Spallation Neutron Source

Tazaki

Haga

Teshigawara

et al. 2017

QuBS

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Abstract:At the Japan Proton Accelerator Research Complex (J-PARC), a pulsed spallation neutron source provides neutrons with high intensity and narrow pulse width pulse to promote researches on a variety of science in the Materials and Life Science Experimental Facility (MLF). It was designed to be driven by a proton beam with an energy of 3 GeV, a power of 1 MW at a repetition rate of 25 Hz, that is world's highest power level. It is still on the way towards the goal to accomplish the operation with a 1 MW proton beam. In this review, distinctive features of the target-moderator-reflector system of the pulsed spallation neutron source are presented.

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Study on low activation decoupler material for MW-class spallation neutron sources

Harada

Teshigawara

Maekawa

et al. 2010

Journal of Nuclear Materials

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Development of aluminum (Al5083)-clad ternary Ag–In–Cd alloy for JSNS decoupled moderator

Cited by 11 publications

References 3 publications

A Challenge for a High-Resolution Ag-In-Cd Decoupler in Intensified Short-Pulsed Neutron Source

A Challenge for a High-Resolution Ag-In-Cd Decoupler in Intensified Short-Pulsed Neutron Source

Materials and Life Science Experimental Facility at the Japan Proton Accelerator Research Complex I: Pulsed Spallation Neutron Source

Study on low activation decoupler material for MW-class spallation neutron sources

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