TWI748296B

An X-ray tube (120) is provided with: a cathode (140) and an anode (150) sealed inside a vacuum envelope (121); and an ion-collecting conductor (130) attached to the vacuum envelop so as to be in contact with an internal space of the vacuum envelope. A first current sensor (210) measures a value of...

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Bibliographic Details
Main Authors NAKAMURA, KENICHIRO, AKIYAMA, GOSHI, OHASHI, TSUNEHISA, SAITO, YUTA
Format Patent
LanguageChinese
Published 01.12.2021
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
X-RAY TECHNIQUE
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Summary:An X-ray tube (120) is provided with: a cathode (140) and an anode (150) sealed inside a vacuum envelope (121); and an ion-collecting conductor (130) attached to the vacuum envelop so as to be in contact with an internal space of the vacuum envelope. A first current sensor (210) measures a value of a first current (Ii) flowing between the ion-collecting conductor (130) and a node (Ng) for supplying potential for attracting positive ions in the vacuum envelope (121). A second current sensor (180) measures a value of a second current (Ie) flowing between the anode (150) and the cathode (140). A control circuit (190) generates diagnostic information on the degree of vacuum of the X-ray tube (120) based on a current ratio Ii/Ie of the first current value (Ii) measured by the first current sensor (210) to the second current value (Ie) measured by the second current sensor (180).
Bibliography:Application Number: TW20198143780