KAGRA Logbook

DGS (General)

shinji.miyoki - 17:25 Wednesday 23 September 2026 (37521)

Switch Bot fro Coolers in the Computer Room at the KAGRA site

"Switch Bots(SWBs)" were attached to 3 Daikin air conditioners for remote turning on, as shown in the photos.

The blue sheets are gel sheets for the purpose to soften the pushing force of the SWBs on the switches of the air conditioners. The Minihub for controlling these SWBs remotely is attached to the pole.

In addition, a web camera (Kamera Ippatsu) is also attached to the wall of the prefab to monitor the air conditioners' operation.

I will provide the account for the Switch Bot Application to allow a responsible person from the DGS team to operate them.

Images attached to this report

Comments to this report:

shinji.miyoki - 20:34 Friday 25 September 2026 (37544)

I put a SwitchBot for air conditioners in the DAB computer room as shown in the attached photo.

You can press the blue gel sheet to turn the coolers on/off.

Images attached to this comment

takahiro.yamamoto - 13:03 Monday 28 September 2026 (37554)

SwitchBots for the air conditioners at Mozumi had fallen onto the floor.
I've reattached them for now, but we should figure out a more secure way to fasten them.

We also need to check whether something similar has happened inside the mine.

Images attached to this comment

shinji.miyoki - 22:13 Tuesday 29 September 2026 (37579)

At least from the camera footage, the two units on the shutter side appear to be attached to each other. On the parking-lot side, it is completely dark, so we cannot check them with the camera either.

Unlike the air conditioner in the data analysis building, the mounting surface in the KAGRA site computer room is flat and smooth, allowing the adhesive to make very good contact with the surface.

The air conditioner in the analysis building appears to have fallen because the mounting surface was neither smooth nor flat/curved, and the gel was attached using the adhesive surface that originally came with the gel material.

We will use sticker tape for them.