论文标题
CERN PS测试光束中爱丽丝广告模块的性能
Performance of ALICE AD modules in the CERN PS test beam
论文作者
论文摘要
在CERN的T10设施中，已经对AD检测器的两个模块进行了研究。 AD探测器由闪烁电板垫制成，由波长变速杆（WLS）读取，并与清洁纤维搭配，这些纤维载有产生的光线与光电管（PMTS）。在爱丽丝（Alice）中，AD用于触发和研究衍射和超高碰撞的物理，以及多种技术任务，例如梁气背景监测或作为发光计。已经测量了模块效率的位置依赖性，并评估了命中对WLS或PMTS的影响。在测试梁的不同力矩上测量了由亲质子和质子沉积的电荷。时间分辨率是根据沉积电荷的函数确定的。这些结果是更好地理解AD检测器，基于相应模拟的重要成分，非常重要的是，它们是类似设备的基线，即当前构建的正向衍射探测器（FDD），并且在LHC运行3和4期间将在爱丽丝公司运行。
Two modules of the AD detector have been studied with the test beam at the T10 facility at CERN. The AD detector is made of scintillator pads read out by wave-length shifters (WLS)coupled to clean fibres that carry the produced light to photo-multiplier tubes (PMTs). In ALICE the AD is used to trigger and study the physics of diffractive and ultra-peripheral collisions as well as for a variety of technical tasks like beam-gas background monitoring or as a luminometer. The position dependence of the modules' efficiency has been measured and the effect of hits on the WLS or PMTs has been evaluated. The charge deposited by pions and protons has been measured at different momenta of the test beam. The time resolution is determined as a function of the deposited charge. These results are important ingredients to better understand the AD detector, to benchmark the corresponding simulations, and very importantly they served as a baseline for a similar device, the Forward Diffractive Detector (FDD), being currently built and that will be in operation in ALICE during the LHC Runs 3 and 4.
