冷却器同步器舒适的基于光束的对准，作为电偶极矩测量的先决条件

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冷却器同步器舒适的基于光束的对准，作为电偶极矩测量的先决条件

Beam-based alignment at the Cooler Synchrotron COSY as a prerequisite for an electric dipole moment measurement

论文作者

Wagner, T., Nass, A., Pretz, J., Abusaif, F., Aggarwal, A., Andres, A., Bekman, I., Canale, N., Ciepal, I., Ciullo, G., Dahmen, F., Dymov, S., Ehrlich, C., Gebel, R., Grigoryev, K., Grzonka, D., Hejny, V., Hetzel, J., Kacharava, A., Kamerdzhiev, V., Karanth, S., Keshelashvili, I., Kononov, A., Kulikov, A., Laiham, K., Lehrach, A., Lenisa, P., Lomidze, N., Magiera, A., Mchedlishvili, D., Müller, F., Nikolaev, N. N., Pesce, A., Poncza, V., Rathmann, F., Retzlaff, M., Saleev, A., Schmühl, M., Shergelashvili, D., Shmakova, V., Slim, J., Stahl, A., Stephenson, E., Ströher, H., Tabidze, M., Tagliente, G., Talman, R., Uzikov, Yu., Valdau, Yu., Wrońska, A.

论文摘要

Jülich电动偶极矩调查（JEDI）的合作旨在使用存储环直接测量质子和迪特龙的电动偶极矩（EDM）。该测量基于极化测量。为了达到最高精度，必须知道通过磁铁，尤其是四极杆的确切轨迹，以避免磁场对极化载体的影响。在本文中，描述了一种基于光束的对准技术的开发，该技术是在ForschungszentrumJülich的冷却器同步器（COZY）上开发和实施的。排列良好的四极杆允许一个人绝对校准梁位置监视器（BPM）。该方法基于以下事实：颗粒光束不会穿过四极杆的中心会经历偏转。该方法达到的精度约为40微米。讨论了针对EDM介质的新高精度存储环的设计的一些后果。

The Jülich Electric Dipole moment Investigation (JEDI) collaboration aims at a direct measurement of the Electric Dipole Moment (EDM) of protons and deuterons using a storage ring. The measurement is based on a polarization measurement. In order to reach highest accuracy, one has to know the exact trajectory through the magnets, especially the quadrupoles, to avoid the influence of magnetic fields on the polarization vector. In this paper, the development of a beam-based alignment technique is described that was developed and implemented at the COoler SYnchrotron (COSY) at Forschungszentrum Jülich. Well aligned quadrupoles permit one to absolutely calibrate the Beam Position Monitors (BPMs). The method is based on the fact that a particle beam, which does not pass through the center of a quadrupole, experiences a deflection. The precision reached by the method is approximately 40 micro meter. Some consequences for the design of a new high precision storage ring for EDM mesasurements are discussed.

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