Curved neutron guide of the cold neutron disk-chopper spectrometer at J-PARC

R. Kajimoto; K. Nakajima; M. Nakamura; T. Osakabe; T. J. Sato; M. Arai

doi:10.1080/10238160902819346

Curved neutron guide of the cold neutron disk-chopper spectrometer at J-PARC

R. Kajimoto, K. Nakajima, M. Nakamura, T. Osakabe, T. J. Sato, M. Arai

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

We have investigated the usefulness of a curved guide for the cold neutron disk-chopper spectrometer (CNDCS), which is under construction for the Japan Proton Accelerator Research Complex (J-PARC), by Monte Carlo simulation. By comparing with a model with a straight guide and a T0 chopper, we found that the curved guide can show comparable performance with the straight guide in the whole energy range of CNDCS when L₁ ≥ 30 m. Interestingly, the curved guide surpasses the straight guide in neutron flux at E ≤ 20 meV, where CNDCS is optimized, because of the loss of flux at the gap for the T₀ chopper in the straight guide.

Original language	English
Pages (from-to)	81-86
Number of pages	6
Journal	Journal of Neutron Research
Volume	16
Issue number	3-4
DOIs	https://doi.org/10.1080/10238160902819346
Publication status	Published - 2008 Jan 1
Externally published	Yes

Keywords

Chopper spectrometer
J-PARC
Neutron transport
Spallation neutron source

ASJC Scopus subject areas

Nuclear and High Energy Physics
Nuclear Energy and Engineering

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10.1080/10238160902819346

Cite this

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abstract = "We have investigated the usefulness of a curved guide for the cold neutron disk-chopper spectrometer (CNDCS), which is under construction for the Japan Proton Accelerator Research Complex (J-PARC), by Monte Carlo simulation. By comparing with a model with a straight guide and a T0 chopper, we found that the curved guide can show comparable performance with the straight guide in the whole energy range of CNDCS when L1 ≥ 30 m. Interestingly, the curved guide surpasses the straight guide in neutron flux at E ≤ 20 meV, where CNDCS is optimized, because of the loss of flux at the gap for the T0 chopper in the straight guide.",

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AU - Kajimoto, R.

AU - Nakajima, K.

AU - Nakamura, M.

AU - Osakabe, T.

AU - Sato, T. J.

AU - Arai, M.

PY - 2008/1/1

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AB - We have investigated the usefulness of a curved guide for the cold neutron disk-chopper spectrometer (CNDCS), which is under construction for the Japan Proton Accelerator Research Complex (J-PARC), by Monte Carlo simulation. By comparing with a model with a straight guide and a T0 chopper, we found that the curved guide can show comparable performance with the straight guide in the whole energy range of CNDCS when L1 ≥ 30 m. Interestingly, the curved guide surpasses the straight guide in neutron flux at E ≤ 20 meV, where CNDCS is optimized, because of the loss of flux at the gap for the T0 chopper in the straight guide.

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KW - Neutron transport

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Curved neutron guide of the cold neutron disk-chopper spectrometer at J-PARC

Abstract

Keywords

ASJC Scopus subject areas

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