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Improvement of Beam Energy Measurement System for BES-III

机译:BES-III光束能量测量系统的改进

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The beam energy measurement system is significant and profit for both BES-III detector and BEPC-II accelerator. The detection of the high energy scattering photons is realized by virtue of the Compton backscattering principle. Many advanced techniques and precise instruments are employed to acquire the highly accurate measurement of positron/electron beam energy. During five years’ running period, in order to satisfy the requirement of data taking and enhance the capacity of measurement itself, the upgradation of system is continued, which involves the components reformation of laser and optics subsystem, replacement of view-port of the laser to vacuum insertion subsystem, the usage of electric cooling system for high purity germanium detector, and the refinement of data acquisition and processing subsystem. The upgrading of system guarantees the smooth and effective measuring of beam energy at BEPC-II and accommodates the accurate offline energy values for further physics analysis at BES-III.
机译:光束能量测量系统对于BES-III探测器和BEPC-II加速器均具有重要意义并带来收益。高能散射光子的检测是借助康普顿反向散射原理实现的。许多先进的技术和精密的仪器被用来获得对正电子/电子束能量的高精度测量。在五年的运行期中,为了满足数据采集的需求和提高测量本身的能力,系统进行了持续的升级,其中涉及激光器和光学子系统的组件改造,激光器视口的更换。真空插入子系统,高纯度锗检测器的电冷却系统的使用以及数据采集和处理子系统的改进。系统的升级保证了BEPC-II光束能量的平滑有效测量,并为BES-III的进一步物理分析提供了准确的离线能量值。

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