Author/Authors :
Ebisawa، نويسنده , , Toru and Soyama، نويسنده , , Kazuhiko and Yamazaki، نويسنده , , Dai and Maruyama، نويسنده , , Ryuji and Tasaki، نويسنده , , Seiji and Abe، نويسنده , , Yutaka and Hayashida، نويسنده , , Hiroyuki and Hino، نويسنده , , Masahiro and Kitaguchi، نويسنده , , Masaaki and Kawabata، نويسنده , , Yuji and Niita، نويسنده , , Koji، نويسنده ,
Abstract :
It is planned that three neutron resonance spin echo spectrometers will be installed in the No. 17 beam port of JSNS. In order to install these three spectrometers in one beam port, the neutron incident beam system to be installed in No. 17 port cannot only supply three polarized neutron beams to these spectrometers, but should also create very low background levels of neutron and gamma rays in the experimental area. We report based on shield evaluations how to realize the low background level by using two highly curved neutron guide tubes with high quality supermirrors.
Keywords :
High quality supermirror , PHITS code , Neutron curved guide tube , Shield evaluation , Gamma dose , Neutron dose
