公开(公告)号：US07151347B1

公开(公告)日：2006-12-19

申请号：US11168198

申请日：2005-06-28

申请人： Ganapati Rao Myneni ,  Bjorgvin Hjorvarsson ,  Gianluigi Ciovati

发明人： Ganapati Rao Myneni ,  Bjorgvin Hjorvarsson ,  Gianluigi Ciovati

IPC分类号： H01J25/00 ,  H01J25/10

CPC分类号： H01P11/008 ,  H05H7/20

摘要： A niobium cavity exhibiting high quality factors at high gradients is provided by treating a niobium cavity through a process comprising: 1) removing surface oxides by plasma etching or a similar process; 2) removing hydrogen or other gases absorbed in the bulk niobium by high temperature treatment of the cavity under ultra high vacuum to achieve hydrogen outgassing; and 3) assuring the long term chemical stability of the niobium cavity by applying a passivating layer of a superconducting material having a superconducting transition temperature higher than niobium thereby reducing losses from electron (cooper pair) scattering in the near surface region of the interior of the niobium cavity. According to a preferred embodiment, the passivating layer comprises niobium nitride (NbN) applied by reactive sputtering.

摘要翻译： 通过以下方法处理铌腔来提供在高梯度下呈现高质量因子的铌腔，该方法包括：1）通过等离子蚀刻或类似工艺去除表面氧化物; 2）通过在超高真空下对空腔进行高温处理，去除大量铌中吸收的氢或其他气体，实现氢气除气; 并且3）通过施加超导材料的超导材料的钝化层来确保铌腔的长期化学稳定性，其中超导材料的超导转变温度高于铌，从而减少了在内部的内表面区域内的电子（铜对）散射的损失 铌腔。 根据优选实施例，钝化层包括通过反应溅射施加的氮化铌（NbN）。

公开(公告)号：US20070286325A1

公开(公告)日：2007-12-13

申请号：US11660413

申请日：2005-09-08

申请人： Per Tagtstrom ,  Bjorn Rebensdorff ,  Bjorgvin Hjorvarsson ,  Peter Isberg

发明人： Per Tagtstrom ,  Bjorn Rebensdorff ,  Bjorgvin Hjorvarsson ,  Peter Isberg

IPC分类号： G21C7/00

CPC分类号： G21C7/10 ,  G21C7/113 ,  Y02E30/39

摘要： The present invention relates to a control rod for a nuclear plant. The control rod is arranged to be provided in a fuel assembly of the nuclear plant and to be in contact with cooling water. The control rod comprises at least an inner space which is adapted to receive an absorber material for allowing absorption of neutrons during operation of the nuclear plant. The absorber material allows formation of at least one gaseous substance during said absorption process. The control rod comprises at least a filter member having a material structure which allows passage of the gaseous substance out from the space at the same time as the material structure prevents a passage of surrounding cooling water into the space.

摘要翻译： 本发明涉及一种用于核电厂的控制棒。 控制杆设置成设置在核电站的燃料组件中并与冷却水接触。 所述控制杆包括至少一个内部空间，所述内部空间适于在所述核电厂的运行期间接纳用于允许吸收中子的吸收材料。 吸收材料允许在所述吸收过程中形成至少一种气态物质。 控制杆至少包括具有材料结构的过滤构件，该材料结构允许气体物质从空间通过，同时材料结构防止周围的冷却水通过空间。