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公开(公告)号：US08659243B2
公开(公告)日：2014-02-25
申请号：US13268193
申请日：2011-10-07
IPC分类号： H05H9/00
CPC分类号： H05H7/00 , H01J37/026 , H01J37/04 , H01J2237/004 , H01J2237/0203 , H01J2237/04735
摘要： In a charged particle accelerator, voltage of several tens of kV is applied between accelerating electrodes. In such a case, electric discharge is sometimes generated between the accelerating electrodes. In the charged particle accelerator, part or entirety of the accelerating electrodes is coated with an electric discharge suppressing layer made of ceramics or alloy having a high melting point as compared with metal. When impurity fine particles are accelerated by an electric field and collide with the electrodes, the electric discharge suppressing layer made of ceramics or alloy prevents metal vapor from being easily generated from the electrodes and an ionized plasma from being easily produced, thus suppressing electric discharge between the electrodes.
摘要翻译： 在带电粒子加速器中，在加速电极之间施加几十kV的电压。 在这种情况下，有时会在加速电极之间产生放电。 在带电粒子加速器中，加速电极的一部分或全部涂覆有与金属相比具有高熔点的陶瓷或合金制成的放电抑制层。 当杂质微粒被电场加速并与电极碰撞时，由陶瓷或合金制成的放电抑制层防止金属蒸气容易地从电极产生，并且电离等离子体容易产生，从而抑制 电极。
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公开(公告)号：US20120025741A1
公开(公告)日：2012-02-02
申请号：US13268193
申请日：2011-10-07
IPC分类号： H05H7/00
CPC分类号： H05H7/00 , H01J37/026 , H01J37/04 , H01J2237/004 , H01J2237/0203 , H01J2237/04735
摘要： In a charged particle accelerator, voltage of several tens of kV is applied between accelerating electrodes. In such a case, electric discharge is sometimes generated between the accelerating electrodes. In the charged particle accelerator, part or entirety of the accelerating electrodes is coated with an electric discharge suppressing layer made of ceramics or alloy having a high melting point as compared with metal. When impurity fine particles are accelerated by an electric field and collide with the electrodes, the electric discharge suppressing layer made of ceramics or alloy prevents metal vapor from being easily generated from the electrodes and an ionized plasma from being easily produced, thus suppressing electric discharge between the electrodes.
摘要翻译： 在带电粒子加速器中，在加速电极之间施加几十kV的电压。 在这种情况下，有时会在加速电极之间产生放电。 在带电粒子加速器中，加速电极的一部分或全部涂覆有与金属相比具有高熔点的陶瓷或合金制成的放电抑制层。 当杂质微粒被电场加速并与电极碰撞时，由陶瓷或合金制成的放电抑制层防止金属蒸气容易地从电极产生，并且电离等离子体容易产生，从而抑制 电极。
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公开(公告)号：US20090295269A1
公开(公告)日：2009-12-03
申请号：US12473507
申请日：2009-05-28
IPC分类号： H01J29/46
CPC分类号： H01J37/026 , H01J37/04 , H01J2237/0041 , H01J2237/0206 , H01J2237/0213 , H01J2237/038
摘要： An insulator of an electron beam generator is placed in vacuum, and will be electrically charged upon bombardment of electrons on the surface thereof, whereby a high electrical field is generated. In addition, when fine impurity particles are present on the surface of the insulator, such fine particles will move due to electrostatic force. These could be a cause of electrical discharge, resulting in an unstable accelerating voltage of an electron beam. An electron beam generator is provided in which an electron beam is generated from a cathode upon application of a voltage across the cathode and an anode. An insulator placed in vacuum has a ceramic substrate and a low-resistivity film formed on the surface of the substrate. The electrical volume resistivity of the low-resistivity film is less than or equal to one-hundredth of that of the substrate (see FIG. 2).
摘要翻译： 电子束发生器的绝缘体放置在真空中，并且在其表面上轰击电子时会带电，从而产生高电场。 此外，当在绝缘体的表面上存在细小的杂质颗粒时，这样的细颗粒将由于静电力而移动。 这些可能是放电的原因，导致电子束的加速电压不稳定。 提供了一种电子束发生器，其中在施加阴极和阳极上的电压时，从阴极产生电子束。 放置在真空中的绝缘体具有陶瓷衬底和形成在衬底表面上的低电阻膜。 低电阻率膜的体积电阻率小于或等于衬底的体积电阻率的百分之一（见图2）。
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公开(公告)号：US20090224701A1
公开(公告)日：2009-09-10
申请号：US12388135
申请日：2009-02-18
IPC分类号： H05H5/00
CPC分类号： H05H7/00 , H01J37/026 , H01J37/04 , H01J2237/004 , H01J2237/0203 , H01J2237/04735
摘要： In a charged particle accelerator, voltage of several tens of kV is applied between accelerating electrodes. In such a case, electric discharge is sometimes generated between the accelerating electrodes. In the charged particle accelerator, part or entirety of the accelerating electrodes is coated with an electric discharge suppressing layer made of ceramics or alloy having a high melting point as compared with metal. When impurity fine particles are accelerated by an electric field and collide with the electrodes, the electric discharge suppressing layer made of ceramics or alloy prevents metal vapor from being easily generated from the electrodes and an ionized plasma from being easily produced, thus suppressing electric discharge between the electrodes.
摘要翻译： 在带电粒子加速器中，在加速电极之间施加几十kV的电压。 在这种情况下，有时会在加速电极之间产生放电。 在带电粒子加速器中，加速电极的一部分或全部涂覆有与金属相比具有高熔点的陶瓷或合金制成的放电抑制层。 当杂质微粒被电场加速并与电极碰撞时，由陶瓷或合金制成的放电抑制层防止容易从电极产生金属蒸气，并且容易地产生电离等离子体，从而抑制 电极。
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公开(公告)号：US08067907B2
公开(公告)日：2011-11-29
申请号：US12388135
申请日：2009-02-18
IPC分类号： H05H9/00
CPC分类号： H05H7/00 , H01J37/026 , H01J37/04 , H01J2237/004 , H01J2237/0203 , H01J2237/04735
摘要： In a charged particle accelerator, voltage of several tens of kV is applied between accelerating electrodes. In such a case, electric discharge is sometimes generated between the accelerating electrodes. In the charged particle accelerator, part or entirety of the accelerating electrodes is coated with an electric discharge suppressing layer made of ceramics or alloy having a high melting point as compared with metal. When impurity fine particles are accelerated by an electric field and collide with the electrodes, the electric discharge suppressing layer made of ceramics or alloy prevents metal vapor from being easily generated from the electrodes and an ionized plasma from being easily produced, thus suppressing electric discharge between the electrodes.
摘要翻译： 在带电粒子加速器中，在加速电极之间施加几十kV的电压。 在这种情况下，有时会在加速电极之间产生放电。 在带电粒子加速器中，加速电极的一部分或全部涂覆有与金属相比具有高熔点的陶瓷或合金制成的放电抑制层。 当杂质微粒被电场加速并与电极碰撞时，由陶瓷或合金制成的放电抑制层防止金属蒸气容易地从电极产生，并且电离等离子体容易产生，从而抑制 电极。
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公开(公告)号：US07250766B2
公开(公告)日：2007-07-31
申请号：US11444309
申请日：2006-06-01
IPC分类号： G01V3/00
CPC分类号： G01R33/3856
摘要： A gradient coil apparatus for magnetic resonance imaging system includes a plurality of gradient coils 11a, 11b and 11c for applying a gradient magnetic field to a test object and an internal heat exchanger 14 to be immersed in insulation oil 13 in a container 12. A pump 16 is disposed to circulate coolant between the internal heat exchanger 14 and an external heat exchanger 15 is disposed outside of the container 12. This arrangement allows the insulation oil only inside of the container, thereby ensuring a substantial reduction in the amount of insulation oil.
摘要翻译： 用于磁共振成像系统的梯度线圈装置包括用于向测试对象施加梯度磁场的多个梯度线圈11a，11b和11c以及要浸入容器12中的绝缘油13中的内部热交换器14 。 泵16设置成在内部热交换器14之间循环冷却剂，外部热交换器15设置在容器12的外部。 这种布置允许绝缘油仅在容器内部，从而确保绝缘油的量显着减少。
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公开(公告)号：US08280006B2
公开(公告)日：2012-10-02
申请号：US12602177
申请日：2008-05-21
IPC分类号： H01J35/00
CPC分类号： H01J35/16 , H01J35/20 , H01J2235/205
摘要： The present invention provides an X-ray tube that improves and stabilizes a withstanding voltage performance and thus ensures the reliability of a product.The present invention is an X-ray tube comprising a cathode for emitting electrons, an anode for emitting an X-ray which an irradiation of the electrons emitted from the cathode causes, and a glass tube for confining the cathode and the anode in a vacuum, wherein an inside surface of the glass tube is covered with a glass thin film having a melting point lower than that of a glass of the glass tube and particles adhered to the glass tube by the glass thin film.
摘要翻译： 本发明提供一种X射线管，其能够改善和稳定耐压性能，从而确保产品的可靠性。 本发明是一种包括用于发射电子的阴极的X射线管，用于发射从阴极发射的电子的照射引起的X射线的阳极和用于将阴极和阳极限制在真空中的玻璃管 其特征在于，所述玻璃管的内表面被玻璃薄膜覆盖，所述玻璃薄膜的熔点低于所述玻璃管的玻璃的熔点，所述玻璃薄片的玻璃薄片附着在所述玻璃管上。
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公开(公告)号：US20100239071A1
公开(公告)日：2010-09-23
申请号：US12602177
申请日：2008-05-21
CPC分类号： H01J35/16 , H01J35/20 , H01J2235/205
摘要： The present invention provides an X-ray tube that improves and stabilizes a withstanding voltage performance and thus ensures the reliability of a product.The present invention is an X-ray tube comprising a cathode for emitting electrons, an anode for emitting an X-ray which an irradiation of the electrons emitted from the cathode causes, and a glass tube for confining the cathode and the anode in a vacuum, wherein an inside surface of the glass tube is covered with a glass thin film having a melting point lower than that of a glass of the glass tube and particles adhered to the glass tube by the glass thin film.
摘要翻译： 本发明提供一种X射线管，其能够改善和稳定耐压性能，从而确保产品的可靠性。 本发明是一种包括用于发射电子的阴极的X射线管，用于发射从阴极发射的电子的照射引起的X射线的阳极和用于将阴极和阳极限制在真空中的玻璃管 其特征在于，所述玻璃管的内表面被玻璃薄膜覆盖，所述玻璃薄膜的熔点低于所述玻璃管的玻璃的熔点，所述玻璃薄片的玻璃薄片附着在所述玻璃管上。
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公开(公告)号：US20060279285A1
公开(公告)日：2006-12-14
申请号：US11444309
申请日：2006-06-01
IPC分类号： G01V3/00
CPC分类号： G01R33/3856
摘要： The present invention provides a gradient coil apparatus for magnetic resonance imaging system capable of enhancing electrical insulation performance and cooling performance. A gradient coil apparatus for magnetic resonance imaging system comprising plurality of gradient coils 11a, 11b and 11c for applying a gradient magnetic field to a test object and an internal heat exchanger 14 to be immersed in insulation oil 13 in a container 12. A pump 16 is disposed to circulate coolant between the internal heat exchanger 14 and an external heat exchanger 15 disposed outside of the container 12. This arrangement allows the insulation oil only inside of the container, thereby ensuring a substantial reduction in the amount of insulation oil.
摘要翻译： 本发明提供一种能够提高电气绝缘性能和冷却性能的磁共振成像系统的梯度线圈装置。 一种用于磁共振成像系统的梯度线圈装置，包括用于向测试对象施加梯度磁场的多个梯度线圈11a，11b和11c，以及浸入容器12中的绝缘油13中的内部热交换器14。 泵16设置成在内部热交换器14和设置在容器12外部的外部热交换器15之间循环冷却剂。这种布置允许仅在容器内部的绝缘油，从而确保绝缘油的量显着减少 。
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公开(公告)号：US07777194B2
公开(公告)日：2010-08-17
申请号：US12073918
申请日：2008-03-12
申请人： Hiroshi Morita , Ryozo Takeuchi , Ayumu Hatanaka
发明人： Hiroshi Morita , Ryozo Takeuchi , Ayumu Hatanaka
CPC分类号： H01J37/04 , B82Y10/00 , B82Y40/00 , H01J37/073 , H01J37/24 , H01J37/3174 , H01J2237/0206 , H01J2237/04735 , H01J2237/06341 , H01J2237/26 , H01J2237/31701 , H01J2237/3175
摘要： A charged particle beam apparatus in which discharge is less likely to occur between a charged particle source, and an extraction electrode, and an acceleration electrode without the need for increasing the capacity of a high voltage power supply for extraction. The charged particle beam apparatus includes a charged particle source which emits charged particles, an extraction electrode which extracts the charged particles from the charge particle source and an acceleration electrode which accelerates the extracted charged particles. A surge absorber is electrically connected between at least two of the charged particle source, the extraction electrode, and the acceleration electrode.
摘要翻译： 一种带电粒子束装置，其中不需要增加用于提取的高压电源的容量，在带电粒子源和引出电极与加速电极之间不太可能发生放电。 带电粒子束装置包括发射带电粒子的带电粒子源，从电荷粒子源提取带电粒子的提取电极和加速提取的带电粒子的加速电极。 浪涌吸收器电连接在至少两个带电粒子源，提取电极和加速电极之间。
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