论文标题
爱丽丝的真正圆柱体内部跟踪器
A truly cylindrical inner tracker for ALICE
论文作者
论文摘要
在升级的内部跟踪系统（ITS2）成功安装和首次操作之后，该系统由约10美元，$ m $^2 $组成的整体硅像素传感器组成，爱丽丝率先使用弯曲，晶状体尺度的像素传感器的用法使用LHC运行4。使用典型的stst sents的稳定器的使用方法。硅的厚度约为$ 30 \，μ$ m，足够灵活，可以弯曲到$ 1 \，$ cm的RADII。通过用强制气流冷却此类传感器，可以构造真正仅由硅传感器组成的真正圆柱层。材料预算的减少和改进的指向分辨率将允许新的测量值，特别是重味腐烂和电磁探针。在本演讲中，我们将报告传感器的开发，测试梁中弯曲传感器的性能以及对真正圆柱层的机械研究。
After the successful installation and first operation of the upgraded Inner Tracking System (ITS2), which consists of about $10\,$m$^2$ of monolithic silicon pixel sensors, ALICE is pioneering the usage of bent, wafer-scale pixel sensors for the ITS3 for LHC Run 4. Sensors larger than typical reticle sizes can be produced using the technique of stitching. At thicknesses of about $30\,μ$m, silicon is flexible enough to be bent to radii of the order of $1\,$cm. By cooling such sensors with a forced airflow, it becomes possible to construct truly cylindrical layers which consist practically only of the silicon sensors. The reduction of the material budget and the improved pointing resolution will allow new measurements, in particular of heavy-flavor decays and electromagnetic probes. In this presentation, we will report on sensor developments, the performance of bent sensors in test beams, and the mechanical studies on truly cylindrical layers.
