论文标题
SND电磁量热计的时间测量及其应用
SND electromagnetic calorimeter time measurement and its applications
论文作者
论文摘要
SND是在VEPP-200 $ E^+E^ - $ Collider（BINP，Novosibirsk）中部署的非磁性检测器，用于在2 GEV以下的质量能量区域中心的HADRONIC横截面测量值。检测器的重要部分是基于NAI（TL）计数器的三层大型电磁磁热计（EMC）。直到最近的EMC光谱通道升级为止，只能在计数器中进行的能量沉积测量。基于FADC的新型EMC信号构图和数字化电子设备使我们还可以获得事件时间结构。新的电子设备和支持软件（包括数字信号处理算法）用于进行正在进行的实验中的数据。我们讨论幅度和时间提取算法，实验事件的新系统性能和物理分析应用。
The SND is a non-magnetic detector deployed at the VEPP-2000 $e^+e^-$ collider (BINP, Novosibirsk) for hadronic cross-section measurements in the center of mass energy region below 2 GeV. The important part of the detector is a three-layer hodoscopic electromagnetic calorimeter (EMC) based on NaI(Tl) counters. Until the recent EMC spectrometric channel upgrade, only the energy deposition measurement in counters was possible. A new EMC signal shaping and digitizing electronics based on FADC allows us to obtain also the event time structure. The new electronics and supporting software, including digital signal processing algorithms, are used for data taking in the ongoing experiment. We discuss the amplitude and time extraction algorithms, the new system performance on experimental events and physical analysis applications.
