公开(公告)号：EP2624277A1

公开(公告)日：2013-08-07

申请号：EP11829029.5

申请日：2011-09-26

Applicant: Inter-University Research Institute Corporation High Energy Accelerator Research Organization

Inventor： URAKAWA, Junji ,  TERUNUMA, Nobuhiro ,  TAKATOMI, Toshikazu

IPC: H01J37/073 ,  G21K1/00 ,  H05H7/08 ,  G21K5/02

CPC classification number: H01J29/481 ,  H01J3/021 ,  H01J3/36 ,  H01J23/06 ,  H01J25/04 ,  H01J2237/0432 ,  H01J2237/04735 ,  H01J2237/062 ,  H01J2237/06333 ,  H05G2/00 ,  H05H7/08 ,  H05H2007/084

Abstract: A photocathode high-frequency electron-gun cavity apparatus of the present invention is provided with a high-frequency acceleration cavity (1), a photocathode (8, 15), a laser entering port (9), a high-frequency power input coupler port (10), and a high-frequency resonant tuner (16). Here, the apparatus adopts an ultra-small high-frequency accelerator cavity which contains a cavity cell formed only with a smooth and curved surface at an inner face thereof without having a sharp angle part for preventing discharging, obtaining higher strength of high-frequency electric field, and improving high-frequency resonance stability. Further, the photocathode is arranged at an end part of a half cell (5) of the high-frequency acceleration cavity for maximizing electric field strength at the photocathode face, perpendicular incidence of laser is ensured by arranging a laser entering port at a position facing to the photocathode behind an electron beam extraction port of the high-frequency acceleration cavity for maximizing quality of short-bunch photoelectrons, and a high-frequency power input coupler port is arranged at a side part of the cell of the high-frequency acceleration cavity for enhancing high-frequency electric field strength. According to the above, it is possible to provide a small photocathode high-frequency electron-gun cavity apparatus capable of generating a high-strength and high-quality electron beam.

Abstract translation: 本发明的光电阴极高频电子枪腔装置设置有高频加速腔（1），光电阴极（8,15），激光进入口（9），高频电力输入耦合器 端口（10）和高频谐振调谐器（16）。 这里，该装置采用超小型高频加速器腔，其包含在其内表面上仅形成有光滑曲面的空腔，而不具有用于防止放电的锐角部，从而获得较高强度的高频电 场，提高高频共振稳定性。 此外，光电阴极被布置在高频加速腔的半电池（5）的端部，用于使光电阴极面的电场强度最大化，通过将激光进入端口布置在面对的位置来确保激光的垂直入射 到高频加速腔的电子束提取端口后面的光电阴极，用于最大化短束光电子的质量，并且高频电力输入耦合器端口布置在高频加速腔的单元的侧部 用于提高高频电场强度。 根据上述，可以提供能够产生高强度和高质量电子束的小型光电阴极高频电子枪腔装置。

公开(公告)号：EP2643930A2

公开(公告)日：2013-10-02

申请号：EP11801619.5

申请日：2011-11-22

Applicant: Siemens Aktiengesellschaft

Inventor： MARQUARDT, Rainer

IPC: H03K7/10 ,  H02H7/10 ,  H02J3/36 ,  H01H33/59

CPC classification number: H02J1/00 ,  H01H33/596 ,  H01J3/36 ,  H02H3/087 ,  H02J3/36 ,  Y02E60/60

Abstract: The invention relates to switching and switchover devices for DC networks which make it possible to realize - particularly in the event of faults - rapid and reliable switching processes in combination with good overvoltage damping and low energy losses during normal operation.

公开(公告)号：EP3443822B1

公开(公告)日：2024-06-05

申请号：EP17782880.3

申请日：2017-04-06

IPC: H05H7/04 ,  H01F1/057 ,  H01J37/143 ,  H01J3/02 ,  H01J3/36

CPC classification number: H01J3/027 ,  H01J3/029 ,  H01J3/36 ,  H01J37/143

公开(公告)号：EP2624277A4

公开(公告)日：2016-05-18

申请号：EP11829029

申请日：2011-09-26

Applicant: KEK HIGH ENERGY ACCELERATOR

Inventor： URAKAWA JUNJI ,  TERUNUMA NOBUHIRO ,  TAKATOMI TOSHIKAZU

IPC: H01J37/073 ,  G21K1/00 ,  G21K5/02 ,  H01J23/06 ,  H01J25/04 ,  H05H7/08

CPC classification number: H01J29/481 ,  H01J3/021 ,  H01J3/36 ,  H01J23/06 ,  H01J25/04 ,  H01J2237/0432 ,  H01J2237/04735 ,  H01J2237/062 ,  H01J2237/06333 ,  H05G2/00 ,  H05H7/08 ,  H05H2007/084

Abstract: A photocathode high-frequency electron-gun cavity apparatus of the present invention is provided with a high-frequency acceleration cavity (1), a photocathode (8, 15), a laser entering port (9), a high-frequency power input coupler port (10), and a high-frequency resonant tuner (16). Here, the apparatus adopts an ultra-small high-frequency accelerator cavity which contains a cavity cell formed only with a smooth and curved surface at an inner face thereof without having a sharp angle part for preventing discharging, obtaining higher strength of high-frequency electric field, and improving high-frequency resonance stability. Further, the photocathode is arranged at an end part of a half cell (5) of the high-frequency acceleration cavity for maximizing electric field strength at the photocathode face, perpendicular incidence of laser is ensured by arranging a laser entering port at a position facing to the photocathode behind an electron beam extraction port of the high-frequency acceleration cavity for maximizing quality of short-bunch photoelectrons, and a high-frequency power input coupler port is arranged at a side part of the cell of the high-frequency acceleration cavity for enhancing high-frequency electric field strength. According to the above, it is possible to provide a small photocathode high-frequency electron-gun cavity apparatus capable of generating a high-strength and high-quality electron beam.