Abstract: The fluorine gas generation device includes an electrolyzer. An electrolytic bath is formed in the electrolyzer. A cathode is disposed in a cathode chamber, and an anode is disposed in an anode chamber. As a voltage is applied across the cathode and the anode, electrolysis of HF (hydrogen fluoride) takes place. In the electrolyzer, hydrogen gas is primarily generated from the cathode and fluorine gas is primarily generated from the anode. Two heating furnaces are provided for heating NaF pellets packed in HF adsorption columns. Each heating furnace has two HF adsorption columns disposed therein.

Abstract: A powder stirring device includes a reaction container and a rotation driving device. The reaction container has a cylindrical outer peripheral wall and a pair of end surface walls. The end surface walls are respectively provided at one end and the other end of the outer peripheral wall. The reaction container is arranged in a heat-insulating cover such that an axis of the outer peripheral wall is in parallel with a horizontal direction. The outer peripheral wall has an inner peripheral surface rotationally symmetric with respect to the axis. During the powder process, the powder is stored in the reaction container, and the reaction container is rotated around a rotation axis that passes through the central axis of the outer peripheral wall by the rotation driving device. In this state, a processing gas is supplied into the reaction container. Also, the processing gas in the reaction container is discharged.

Abstract: The fluorine gas generation device includes an electrolyzer. An electrolytic bath is formed in the electrolyzer. A cathode is disposed in a cathode chamber, and an anode is disposed in an anode chamber. As a voltage is applied across the cathode and the anode, electrolysis of HF (hydrogen fluoride) takes place. In the electrolyzer, hydrogen gas is primarily generated from the cathode and fluorine gas is primarily generated from the anode. Two heating furnaces are provided for heating NaF pellets packed in HF adsorption columns. Each heating furnace has two HF adsorption columns disposed therein.

Abstract: A bolus and final collimators are inserted into an apparatus for fixing radiation beam irradiation field forming member, fixed on the front end of radiation beam irradiating section within a rotation gantry, through grooves of a frame, and pushed in by a door until they reach a specified position determined by the existence of a back panel. Through this arrangement it is possible to easily perform an exchange of boluses and final collimators which is required each time therapy is renewed for a patient, and to accurately determine the position of new bolus and final collimators.