标题： 用于μ子g-2的高精度储存环及其在粒子和重离子物理中的可能应用 显示英文标题

标题： High-Precision Storage Ring for g-2 of the Muon and Possible Applications in Particle and Heavy Ion Physics

摘要： 一种新的超导磁存储环，其磁场在1.45 T下具有高度均匀性且静电聚焦较弱，已在美国布鲁克海文国家实验室（BNL）建立，用于μ子磁异常的精确测量。环形存储体积的半径为7米，直径为9厘米。基于质子在H$_2$O中的脉冲核磁共振进行的精确磁场测定，在存储区域内的任何地方都能达到优于0.1 ppm的精度。已经提出了使用该装置进行后续实验，以搜索μ子中微子的有限质量，并以显著提高的精度搜索μ子的电偶极矩。磁场的高度均匀性表明，此类装置可作为更重粒子的质量谱仪使用。 显示英文摘要

摘要： A new superferric magnetic storage ring with highly homogeneous field at 1.45 T and weak electrostatic focussing is described which has been set up at the Brookhaven National Laboratory (BNL), USA, for a precision measurement of the magnetic anomaly of the muon. The toroidal storage volume has a radius of 7 m and a diameter of 9 cm. Precision magnetic field determination based on pulsed NMR on protons in H$_2$O yields the field to better than 0.1 ppm everywhere within the storage region. Follow on experiments using the setup have been already suggested to search for a finite mass of the muon neutrino and to search for an electric dipole moment of the muon with significantly increased accuracy. The high homogeneity of the field suggests the usage of such devices as a mass spectrometer for heavier particles as well.