Abstract: A measurement device includes a sensing portion and a measuring portion. The sensing portion contains at least a fluorescent material whose emitting of fluorescent light ceases due to an action of a radioactive beam. The measuring portion measures a radiation quantity of the radioactive beam, with which the sensing portion is irradiated, based on an amount of decrease in the intensity of the fluorescent light emitted by the fluorescent material contained in the sensing portion when the radioactive beam acts on at least a portion of the fluorescent material. The fluorescent light is emitted due to irradiation of the fluorescent material by an excitation source.

Abstract: A boron neutron capture therapy system has a neutron beam irradiation device, a patient restraint/placement portion, a three-dimensional diagnostic device, an irradiation table, a position adjustment mechanism, and a control unit. The boron neutron capture therapy system performs position determination with a sufficient degree of accuracy at the time of the boron neutron capture therapy. Further, the control unit, using the movement of the irradiation table, performs collision avoidance processing that changes the movement of the irradiation table before the patient restrained on the patient restraint/placement portion receives injury by colliding with the irradiation port, and thus, collision between the patient and the irradiation port can be avoided.

Abstract: According to an aspect, a magnesium fluoride sintered compact includes a disc-shaped magnesium fluoride sintered compact having a through hole passing through a center axis of the disc-shaped magnesium fluoride sintered compact. The magnesium fluoride sintered compact has a relative density of 95% or higher.

Abstract: There are provided a method for manufacturing a magnesium fluoride sintered compact to be free from cracks and chipping and to have high relative density, a method for manufacturing a neutron moderator, and the neutron moderator. The method for manufacturing a magnesium fluoride sintered compact includes a powder filling process for filling a magnesium fluoride powder material into a die by tapping, and an intermediate body sintering (pulsed electric current sintering) process for performing pulsed electric current sintering for sintering the filled magnesium fluoride powder material while applying a pulsed electric current thereto, to obtain a magnesium fluoride sintered compact (intermediate body).

Abstract: There are provided a method for manufacturing a magnesium fluoride sintered compact to be free from cracks and chipping and to have high relative density, a method for manufacturing a neutron moderator, and the neutron moderator. The method for manufacturing a magnesium fluoride sintered compact includes a powder filling process for filling a magnesium fluoride powder material into a die by tapping, and an intermediate body sintering (pulsed electric current sintering) process for performing pulsed electric current sintering for sintering the filled magnesium fluoride powder material while applying a pulsed electric current thereto, to obtain a magnesium fluoride sintered compact (intermediate body).

Abstract: Provided are an automatic lithium target regenerating apparatus and an automatic lithium target regenerating method, which are equipped with a measurement function of a lithium film thickness of a lithium target, and may automatically regenerate the consumed lithium target by moving a vapor deposition source to the lithium target. An automatic lithium target regenerating apparatus (106) is allowed to automatically regenerate lithium of a lithium target. The automatic lithium target regenerating apparatus (106) includes a lithium vapor deposition unit (1) for vapor-depositing the lithium on the lithium target. The lithium vapor deposition unit (1) is allowed to vapor-deposit the lithium on the lithium target by moving to the lithium target side.

Abstract: Provided are an automatic lithium target regenerating apparatus and an automatic lithium target regenerating method, which are equipped with a measurement function of a lithium film thickness of a lithium target, and may automatically regenerate the consumed lithium target by moving a vapor deposition source to the lithium target. An automatic lithium target regenerating apparatus (106) is allowed to automatically regenerate lithium of a lithium target. The automatic lithium target regenerating apparatus (106) includes a lithium vapor deposition unit (1) for vapor-depositing the lithium on the lithium target. The lithium vapor deposition unit (1) is allowed to vapor-deposit the lithium on the lithium target by moving to the lithium target side.