초록 ▼

An open architecture recondensing superconducting magnet utilizing an upper and lower cryogen vessel connected by a passageway which extends above the bottom of upper cryogen vessel to discontinue the flow of liquid cryogen through the passageway to reserve liquid cryogen in the upper cryogen vessel

An open architecture recondensing superconducting magnet utilizing an upper and lower cryogen vessel connected by a passageway which extends above the bottom of upper cryogen vessel to discontinue the flow of liquid cryogen through the passageway to reserve liquid cryogen in the upper cryogen vessel when the cryogen level falls to provide an increased ride-through period in the event of a depleting liquid cryogen supply due to failure of the cryogen gas recondenser. A signal is provided to indicate the need to correct the failure.

대표청구항 ▼

[ What is claimed is:] [1.] An open architecture recondensing cryogen superconducting magnet including an upper and lower vertically spaced cryogen vessel with the upper cryogen vessel spaced from and overlying said lower cryogen vessel each including superconducting magnet coils and a liquid cryoge

[ What is claimed is:] [1.] An open architecture recondensing cryogen superconducting magnet including an upper and lower vertically spaced cryogen vessel with the upper cryogen vessel spaced from and overlying said lower cryogen vessel each including superconducting magnet coils and a liquid cryogen supply to provide a magnetic field therebetween, apparatus to prolong the period of time of superconducting ride-through operation comprising:a recondenser to recondense cryogen gas back to liquid cryogen connected to said upper cryogen vessel to replenish said liquid helium; andat least one passageway connecting the interior of said upper cryogen vessel and the interior of said lower cryogen vessel;said passageway including an opening at a preselected height above the bottom of said upper cryogen vessel;said passageway enabling the transfer of said liquid cryogen from said upper cryogen vessel to said lower cryogen vessel as long as the level of said liquid cryogen in said upper vessel is above said opening after which gravity flow between the upper vessel and lower vessel is discontinued through said passageway;said height being above the level of liquid cryogen below which said superconducting operation of said magnet coils in said upper cryogen vessel quenches;whereby the ride-through period of continued operation of said superconducting magnet in both the upper and lower cryogen vessel in the event of failure of the liquid helium recondensing can be extended by discontinuing said transfer of said liquid cryogen to said lower cryogen vessel at a level determined by the said preselected height.