Speaker
Description
To ensure the safety of workers during disasters is a common issue. In a construction site such as a tunnel, since it is a space where positioning by GPS (Global Positioning System) is difficult, it is realized to install a unique positioning system and instruct workers to move away. In order to divert it to an accelerator tunnel, the problem of radiation resistance has to be solved. We focused on wireless LANs capable of two-way communication, and performed radiation resistance tests. Access point (AP) devices were installed in the J-PARC MR accelerator tunnel to conduct research on radiation hardness including neutrons, and at the same time, irradiation tests at a Co 60 gamma ray irradiation facility was done. The radiation hardness of the AP is shown to extent up to excess 1kGy by turning off the power of the AP under irradiation, and is expected to be used in a radiation environment. In addition, we have developed a disaster prevention application that uses a positioning system, and are testing it in the J-PARC MR accelerator tunnel. The developed application not only distributes messages simultaneously by the administrator side, but also allows the worker side to distribute messages, all messages are recorded, and a read function are provided. In the future, we plan to be able to monitor the (abnormal) condition of the worker. In this forum, we will discuss past studies and future development directions.
