Upgrade of Beam Energy Measurement System at BEPC-II
| Autor: | Xiao Cai, Jian-Yong Zhang, E. V. Mamoshkina, Bai-Qi Liu, DY Guo, M. N. Achasov, A. A. Krasnov, Jian-Li Wang, F. A. Harris, E. E. Pyata, N. Yu. Muchnoi, Xiao-Hu Mo |
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| Rok vydání: | 2015 |
| Předmět: |
Nuclear and High Energy Physics
Thermoelectric cooling Photon Physics - Instrumentation and Detectors Computer science Nuclear engineering FOS: Physical sciences 01 natural sciences law.invention High Energy Physics - Experiment High Energy Physics - Experiment (hep-ex) Data acquisition law 0103 physical sciences 010306 general physics Instrumentation 010308 nuclear & particles physics System of measurement Detector Astronomy and Astrophysics Instrumentation and Detectors (physics.ins-det) Laser Semiconductor detector Upgrade Physics::Accelerator Physics High Energy Physics::Experiment |
| DOI: | 10.48550/arxiv.1510.08167 |
| Popis: | The beam energy measurement system is of great importance and profit for both BEPC-II accelerator and BES-III detector. The system is based on measuring the energies of Compton back-scattered photons. Many advanced techniques and precise instruments are employed to realize the highly accurate measurement of positron/electron beam energy. During five year's running period, in order to meet the requirement of data taking and improve the capacity of measurement itself, the upgradation of system is continued, which involve the component reformation of laser and optics subsystem, replacement of view-port of the laser to vacuum insertion subsystem, the purchase of electric cooling system for high purity germanium detector, and the improvement of data acquisition and processing subsystem. The upgrading of system guarantees the smooth and efficient measuring of beam energy at BEPC-II and accommodates the accurate offline energy values for further physics analysis at BES-III. Comment: 10 pages, 9 figures. Submitted to Chinese Physics C |
| Databáze: | OpenAIRE |
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