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遮蔽

Shielding

前川 藤夫

Maekawa, Fujio

中性子及び付随する$$gamma$$線の遮蔽は、研究者の放射線安全及びバックグラウンド低減による良い実験データ取得の観点で重要である。本稿では、中性子遮蔽の基礎、中性子及び$$gamma$$線遮蔽の物理と適切な材料、そしてJ-PARC MLFの1-MW核破砕中性子源遮蔽の概念設計例について解説する。

Adequate shielding of neutrons and associated $$gamma$$-rays is of importance from viewpoints of the radiation safety of researchers and good experimental data taking by reducing the background. This article introduces basics of neutron shielding, physics and suitable materials for neutron and $$gamma$$-ray shielding, and an example of conceptual shielding design for the 1-MW spallation neutron source of J-PARC MLF.

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