• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>IEEE Nuclear Science Symposium;Medical Imaging Conference >Aerogel-Based Ring-Imaging Cherenkov counter in the Belle II experiment
【24h】

Aerogel-Based Ring-Imaging Cherenkov counter in the Belle II experiment

机译：Belle II实验中基于气凝胶的环形成像Cherenkov计数器

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In the charged particle identification system of the Belle II experiment, an aerogel-based proximity focusing ring-imaging Cherenkov (ARICH) counter is installed in the forward end-cap region of the Belle II detector. The goal is to enhance the power of separation between kaons and pions up to and above 4σ for momenta up to 4 GeV/c, which is critical to the study of CP violation involved in B decays. The counter is made of aerogel tiles with refractive indices n of 1.045 and 1.055, transmission lengths of 30-40 mm, and dimensions of 18 × 18 × 2 cm3. A 144-channel HAPD (Hybrid Avalanche Photo Detector) is adopted as a photo-detector, and the HAPD signal processing is performed using ASICs (Application Specific Integrated Circuit) to digitize the signal and FPGAs (Field Programmable Gate Array) for data processing.During Phase II operation of SuperKEKB, the commissioning of ARICH is done both with cosmic rays and beam collisions. The Cherenkov rings are clearly observed, and the performance of the hardware system and identification algorithm is being evaluated. In this paper, we will report on the construction of ARICH and on the initial performance of the detector obtained during the commissioning.
机译：在Belle II实验的带电粒子识别系统中，将基于气凝胶的接近聚焦环形成像Cherenkov（ARICH）计数器安装在Belle II检测器的前端盖区域。目的是提高高达4σV/ c的动量和高达4σ或更高的钾离子与离子之间的分离能力，这对于研究B衰变涉及的CP违反至关重要。计数器由折射率n为1.045和1.055，传输长度为30-40 mm，尺寸为18×18×2 cm的气凝胶砖制成 3 。采用144通道HAPD（混合雪崩光电探测器）作为光电探测器，并使用ASIC（专用集成电路）对HAPD信号进行处理以数字化信号，并使用FPGA（现场可编程门阵列）进行数据处理。在SuperKEKB的第二阶段操作期间，ARICH的调试是通过宇宙射线和射束碰撞完成的。清晰地观察到了Cherenkov环，并且正在评估硬件系统和识别算法的性能。在本文中，我们将报告ARICH的构造以及在调试过程中获得的探测器的初始性能。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号