论文标题
fnal的伊卡洛斯T600检测器的激光二极管校准系统
The laser diode calibration system of the ICARUS T600 detector at FNAL
论文作者
论文摘要
ICARUS T600 LAR TPC是FNAL短基线程序的远处检测器。由于它必须在助推器中微子束的浅深度上工作，因此将出现大型宇宙射线背景（$ \ sim 11 $ kHz）。为了减少它，基于360个大面积的光电倍增器，需要从新的光检测系统中进行精确的定时信息。为了精确的时间测量，基于快速激光二极管和基于一个光学开关的系统，几个$ 1 \ times 10 $融合的光纤拆分器，超高真空光学光学进料和多模式光贴片长达20 m长，可将激光脉冲分配给每个单个单个PMT。 PMTS的增益/计时及其初始校准的时间演变将通过使用此系统来完成$ T_0 $。该校准系统的预期时间分辨率约为100 ps。报告了设置系统所需的实验室测试。
The ICARUS T600 LAr TPC is the far detector of the Short Baseline Program at FNAL. As it will have to work at shallow depth in the Booster Neutrino Beam, a large cosmic rays background ($\sim 11$ kHz) will be present. To reduce it, precise timing information is needed from the new light detection system, based on 360 large area photomultipliers. For precise time measurements a calibration system based on a fast laser diode and a system based on one optical switch, several $1 \times 10$ fused fiber splitters, ultra-high vacuum optical feedthroughs and multimode optical patchcords up to 20 m long, to distribute the laser pulses to each single PMT, was designed. The time evolution of the PMTs' gain/timing and possibly their initial calibrations at a time $t_0$ will be done by using this system. The expected time resolution of this calibration system will be around 100 ps. The laboratory tests needed to set up the system are reported.
