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Detalles Bibliográficos
Autores principales:	Wang, Hulin, Wei, Xianglun, Gao, Chaosong, Liu, Jun, Liu, Junshuai, Wang, Zhen, Chen, Ran, You, Bihui, Ma, Peng, Yang, Haibo, Zhao, Chengxin, Xu, Mingmei, Shi, Shusu, Huang, Guangming, Liu, Feng, Sun, Xiangming
Formato:	Preprint
Publicado:	2025
Materias:	Instrumentation and Detectors
Acceso en línea:	https://arxiv.org/abs/2509.10800
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

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A gaseous beam monitor utilizing gas electron multiplier (GEM) and pixel sensors is being developed for the Cooling Storage Ring (CSR) External-target Experiment (CEE) at Heavy Ion Research Facility in Lanzhou (HIRFL). The beam monitor is mainly used to track each beam particle, providing an accurate reconstruction of the primary vertex of the collision. Two generations of the pixel sensors (named Topmetal-CEE) were produced, with the second generation's performance improving over the first one. The design and performance of the prototype are described in the paper. Characterization of the prototype with heavy-ion beams and laser beams are presented, showing a spatial resolution better than 50 $\mum$ and a time resolution better than 15 ns.

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