任意光粒子搜索实验中超导HERA偶极子的矫直ALPS II
Straightening of Superconducting HERA Dipoles for the Any-Light-Particle-Search Experiment ALPS II
摘要：
在DESY，ALPS II实验被安装在HERA隧道中，以寻找轴子样粒子（ALP）。激光束将被注入一串超导HERA偶极磁体，以产生ALP。在穿过不透光的墙壁后，ALP可以在第二串HERA偶极子中重新转换为光子。在墙壁前后设置两个模式匹配光学腔将提高实验的灵敏度。磁体的曲率限制了光学谐振器的性能，因此通过拉直弯曲的磁轭来增加HERA偶极子内的光学谐振器的孔径。本报告描述了拉直HERA偶极的程序。
英文摘要：
At DESY the ALPS II experiment is being installed in the HERA tunnel to search for axion like particles (ALPs). A laser beam will be injected into a string of superconducting HERA dipole magnets, to produce ALPs. After passing a light tight wall, the ALPs can reconvert into photons in a second string of HERA dipoles.The sensitivity of the experiment will be increased by two mode-matched optical cavities before and behind the wall. The curvature of the magnets limits the performance of the optical resonators, Therefore the aperture for the optical resonators inside the HERA dipoles was increased by straightening the curved magnet yoke. The procedure of straightening the HERA dipoles is described in this report.
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