| 摘要 |
PURPOSE:To obtain the high speed rotation of the captioned rotation anode, by providing, injection and ejection passages for injecting and ejecting a coolant into a cooling passage provided in the rotation anode, in the direction where the inflow pressure hardly interfere the rotation of said anode. CONSTITUTION:In case of the captioned device, electron beams 15 are irradiated from an electron gun 8 to a rotation anode 1 with a coolant passage 10, and the generated X-ray therein is radiated through a transmission window 9. Besides, a coolant injection passage 22 and an ejection passage 23 intercommunicated to the coolant passage 10, are provided to a housing 21 supporting the rotation anode 1. In this case, the injection passage 22 is provided in the approximately tangential direction reversely to the rotating direction of the anode 1, while the ejection passage 23 is provided in the approximately tangential direction identically to the rotating direction thereof. Therefore, the inflow pressure of the coolant 17 is hardly allowed to interfere the rotation of the anode 1, thereby the coolant 17 is injected and ejected with no resistance so that it is possible to improve the performance of the captioned device in order that the coolant 17 is preferably contributed to obtain the high speed rotation of the anode 1.
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