The LHCb Collaboration is currently in the final stage of constructing an upgraded detector that will allow the experiment to operate at higher luminosities and with a triggerless readout. The main tracking stations—which originally were subdivided in an Inner Tracker made from silicon strip sensors and an Outer Tracker built from straw-tubes—are being replaced by a single tracking detector, the Scintillating fibre Tracker (SciFi). The SciFi covers a total detector area of 340 m 2 by using more than 10000 km of scintillating fibre with 250 μm diameter, enabling a spatial resolution of better than 100 μm for hits originating from charged particles. It is built from individual modules (0.5 m × 4.8 m) comprised of 8 scintillating fibre mats with a length of 2.4 m as the active detector material. The 13 cm wide fibre mats consist of 6 layers of densely packed blue emitting scintillating fibres. The scintillation light is detected with arrays o...

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SciFi，LHCb实验的新跟踪器

LHCb协作目前处于构建升级检测器的最后阶段，该检测器将使实验能够在更高的亮度下进行且无触发读数。主要的跟踪站（最初细分为由硅带传感器制成的内部跟踪器和由稻草管构建的外部跟踪器），已由单个跟踪检测器闪烁光纤跟踪器（SciFi）取代。通过使用10000 km以上直径为250μm的闪烁光纤，SciFi覆盖了总检测器面积340 m 2，对于源自带电粒子的撞击，其空间分辨率优于100μm。它由单个模块（0.5 m×4.8 m）构建，该模块由8个长度为2.4 m的闪烁纤维垫作为活性检测器材料组成。13厘米宽的纤维毡由6层密集堆积的发蓝色光的闪烁纤维组成。闪烁的光通过阵列检测到...