Abstract: A septum magnet includes a yoke that can be separated at the approximately center portion thereof in the axis direction; a septum coil; a return coil; and a vacuum duct that is inserted between the septum coil and the return coil. The septum coil is formed in such a way as to be able to be separated into a first portion and a second portion in response to separation of the yoke; and in a space between the septum coil and the vacuum duct, there is provided an auxiliary coil, in two portions of which, corresponding to the first portion and the second portion of the septum coil, electric currents flow in opposite direction to each other in a circumferential direction.

Abstract: A septum magnet includes a yoke that can be separated at the approximately center portion thereof in the axis direction; a septum coil; a return coil; and a vacuum duct that is inserted between the septum coil and the return coil. The septum coil is formed in such a way as to be able to be separated into a first portion and a second portion in response to separation of the yoke; and in a space between the septum coil and the vacuum duct, there is provided an auxiliary coil, in two portions of which, corresponding to the first portion and the second portion of the septum coil, electric currents flow in opposite direction to each other in a circumferential direction.

Abstract: A cryostat comprising a cryogenic vessel for storing a cryogen therein, a port pipe disposed at a portion of the vessel for holding one end of a supply pipe for supplying the cryogen to the vessel thereby allowing the cryogen to flow into the vessel while the very low temperature liquid cryogen is being supplied from the exterior to the vessel, and a cryogen supply pipe disposed in the vessel so as to be spaced apart from the port pipe, further the cryogen supply pipe having a receiving portion for receiving the cryogen from the supply pipe during the supply of the cryogen.