PROBLEM TO BE SOLVED: To provide a neutron beam shield structure that is appropriately used in a wall between a room in which an accelerator is installed and a room in which a beam dump device is installed, and can effectively inhibit a neutron beam generated by the beam dump device from leaking to the room having the accelerator.;SOLUTION: A wall formed of a neutron beam shield structure 10 including a concrete part 11 located on a beam dump device 2 side and a boron-containing sheet 12 located on an accelerator device 1 side is disposed between a room 5 in which the beam dump device 2 for making a charged particle radiated from the accelerator device 1 as a radiation source collide against a dump target 2a to attenuate the dump target 2a is installed and a room 6 in which the accelerator device 1 is installed.;COPYRIGHT: (C)2014,JPO&INPIT
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