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arXiv 1603.09669physics.ins-dethep-ex
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EUDET型光束望远镜的性能

Performance of the EUDET-type beam telescopes

H. Jansen, S. Spannagel, J. Behr, A. Bulgheroni, G. Claus, E. Corrin, D. G. Cussans, J. Dreyling-Eschweiler, D. Eckstein, T. Eichhorn, M. Goffe, I. M. Gregor, D… 展开作者

H. Jansen, S. Spannagel, J. Behr, A. Bulgheroni, G. Claus, E. Corrin, D. G. Cussans, J. Dreyling-Eschweiler, D. Eckstein, T. Eichhorn, M. Goffe, I. M. Gregor, D. Haas, C. Muhl, H. Perrey, R. Peschke, P. Roloff, I. Rubinskiy, M. Winter

摘要:

在DESY的试验束设施进行了试验束测量,以验证最初在EUDET项目中开发的EUDET型光束望远镜的性能。光束望远镜配备了六个传感器平面,使用MIMOSA 26单片有源像素器件。可编程触发逻辑单元提供有关颗粒通过的触发逻辑和时间戳信息。数据采集框架和离线重建软件包都可用。用户设备可以通过预定义的接口轻松集成到数据采集框架中。作为一个功能的光束能量,平面间距和传感器的阈值偏置的剩余分布进行了研究。在6,GeV电子/正电子束中,用所有六个平面跟踪,在两个中心象素平面上的标准偏差为$(2.88\,\pm\,0.08)\,\upmu\meter$ .在5,GeV电子/正电子束流下,采用20,mm的等间距平面间距,在两个内像素平面之间的中点处,采用测量的本征分辨率,估计径迹分辨率为$(3.24\,\pm\,0.09)\,\upmu\meter$。朝向较低的光束能量,由于增加的多次散射,轨道分辨率劣化。阈值研究表明,MIMOSA 26传感器的最佳工作点在传感器阈值的5到6倍之间的RMS噪声。在不同的平面间距的测量被用来校准的量的多次散射的材料中穿过,并允许校正的预测角散射的电子束。

英文摘要:

Test beam measurements at the test beam facilities of DESY have been conducted to characterise the performance of the EUDET-type beam telescopes originally developed within the EUDET project. The beam telescopes are equipped with six sensor planes using MIMOSA26 monolithic active pixel devices. A programmable Trigger Logic Unit provides trigger logic and time stamp information on particle passage. Both data acquisition framework and offline reconstruction software packages are available. User devices are easily integrable into the data acquisition framework via predefined interfaces. The biased residual distribution is studied as a function of the beam energy, plane spacing and sensor threshold. Its standard deviation at the two centre pixel planes using all six planes for tracking in a 6\,GeV electron/positron-beam is measured to be $(2.88\,\pm\,0.08)\,\upmu\meter$.Iterative track fits using the formalism of General Broken Lines are performed to estimate the intrinsic resolution of the individual pixel planes. The mean intrinsic resolution over the six sensors used is found to be $(3.24\,\pm\,0.09)\,\upmu\meter$.With a 5\,GeV electron/positron beam, the track resolution halfway between the two inner pixel planes using an equidistant plane spacing of 20\,mm is estimated to $(1.83\,\pm\,0.03)\,\upmu\meter$ assuming the measured intrinsic resolution. Towards lower beam energies the track resolution deteriorates due to increasing multiple scattering. Threshold studies show an optimal working point of the MIMOSA26 sensors at a sensor threshold of between five and six times their RMS noise. Measurements at different plane spacings are used to calibrate the amount of multiple scattering in the material traversed and allow for corrections to the predicted angular scattering for electron beams.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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