Figure 3

copyright of the photographs.
Configuration of the HKMSDD segment. The schematic of the muographic sensor module (MSM) (A) is shown along with a photograph of the MSM (B). The abbreviations DCU and HVU respectively indicate the discriminator-coincidence unit and the high-voltage power supply unit. The block diagram of the data collection scheme (C) is shown along with a photograph of the Data Acquisition Center (DAC) (D). The network cameras (NW Cameras) are respectively used for monitoring the MSM LEDs and the DAC 7-segment LEDs. The HKMSDD server hosts a closed network. The schematic view of the HKMSDD segment is also shown (E). HKMT holds the