韩国ALICE望远镜的开发及其在KEK PF-AR电子束上的演示
Development and demonstration of the Korea ALICE Telescope using electron beams at KEK PF-AR
- Inha University（仁荷大学）
- Pusan National University（釜山国立大学）
- University of Tsukuba（筑波大学）
- University of Tokyo（东京大学）
- Yonsei University（延世大学）
- Hiroshima University（广岛大学）
机构由 AI 辅助整理，请以论文原文为准。
中文总结 AI 辅助
本文介绍了韩国ALICE望远镜（KATS）的开发与束流测试，验证了弯曲ALPIDE传感器在18毫米弯曲半径下的稳定跟踪性能，为未来低质量圆柱形硅顶点探测器提供了可靠的研发平台。
中文摘要 AI 辅助
开发超低质量、高精度的顶点探测器是未来对撞机实验的关键要求，并推动了新型硅跟踪技术的广泛研究与开发。在本工作中，我们介绍了韩国ALICE望远镜（KATS）的开发及束流测试演示，该望远镜是一个硅跟踪望远镜，旨在支持下一代圆柱形顶点探测器（如拟议的ALICE ITS3升级）的研发。该望远镜由六个ALPIDE单片有源像素传感器（MAPS）作为参考跟踪平面、一个弯曲的ALPIDE传感器作为待测器件，以及一个基于闪烁光纤的触发系统组成，所有组件均安装在一个不透光的模块化外壳内。该装置能够实现精确的径迹重建，并对平面和弯曲硅传感器进行详细的性能研究。束流测试在KEK光子工厂先进环（PF-AR）的高能电子束上进行。望远镜系统在真实束流条件下稳定运行，其跟踪性能得到了成功验证。弯曲的ALPIDE传感器在约18毫米的弯曲半径下运行，与ITS3的设计目标一致，且未观察到探测性能的任何退化。测量结果证实，KATS为弯曲MAPS技术、对准精度和跟踪性能的研究提供了一个多功能且可靠的平台。这些结果为未来低质量圆柱形硅顶点探测器的关键技术提供了重要的实验验证，并使KATS成为持续及未来探测器研发的宝贵设施。
英文摘要
The development of ultra-low-mass, high-precision vertex detectors is a key requirement for future collider experiments and motivates extensive research and development of novel silicon tracking technologies. In this work, we present the development and beam-test demonstration of the Korea ALICE Telescope (KATS), a silicon-tracking telescope designed to support R&D on next-generation cylindrical vertex detectors, such as the proposed ALICE ITS3 upgrade. The telescope consists of six ALPIDE Monolithic Active Pixel Sensors (MAPS) used as reference tracking planes, a bent ALPIDE sensor serving as the device under test, and a scintillating-fiber-based trigger system, all housed in a light-tight modular enclosure. This setup enables precise track reconstruction and detailed performance studies of both planar and curved silicon sensors. Beam tests were carried out using high-energy electron beams at the KEK Photon Factory Advanced Ring (PF-AR). The telescope system operated stably under realistic beam conditions, and its tracking performance was successfully validated. The bent ALPIDE sensor was operated at a bending radius of approximately 18 mm, consistent with ITS3's design goals, without any observable degradation in detection performance. The measured results confirm that the KATS provides a versatile and reliable platform for studies of curved MAPS technologies, alignment precision, and tracking performance. These results provide important experimental validation of key technologies for future low-mass cylindrical silicon vertex detectors and establish KATS as a valuable facility for ongoing and future detector R&D.
