Readout Electronics for the Zero Degree Calorimeter at HIRFL-CEE Experiment

Authors：Yang, Haibo; Wan, Shucai; Li, Xianqin; Zhu, Sihan; Zhang, Honghui; Pei, Hua; Yu, Yuhong; Zhu, Jieyu; Liao, Shun; Wang, Yaping; Yang, Ping; Liu, Feng; Huang, Guangming; Zhao, Chengxin^*

Source：IEEE Transactions on Nuclear Science, 2023, 70(6): 1061-1068.

DOI：10.1109/TNS.2022.3216453

• Cooler storage ring (CSR) external-target experiment (CEE)
• data acquisition (DAQ)
• energy measurement
• readout electronics
• zero degree calorimeter (ZDC)

The cooler storage ring (CSR) external-target experiment (CEE) at the Heavy Ion Research Facility at Lanzhou (HIRFL) will be the first giga-electron volt large-scale nuclear physics experiment developed independently in China. The primary physics goal of the CEE is to study the nuclear equation of state, hypernuclei, and radioactive ion beam physics. The zero degree calorimeter (ZDC) of CEE measures the centrality and reaction plane of the nuclear-nuclear collision relative to the hadron background. It consists of 192 roughly trapezoidal plastic scintillator (PS) crystal blocks coupled with photomultiplier tube (PMT) to convert charged particles into electrical signals. The readout electronics consist of 12 front-end electronics (FEEs), the subtrigger module, and the subclock module. In addition, one high voltage (HV) crate provides an HV power supply for the PMTs. According to the electrical test on the electronics, the root mean square (RMS) noise is less than 0.4 mV, and the nonlinearity is less than 0.06%. The heavy-ion beam test shows that the ZDC can measure particles up to Z = 7, which meets the physics requirements.

• Institution
  贵州大学; 中国科学院研究生院