[miyoki, omae, yamaguchi, yoshimura]

We put a cover over the floor at 2F area around PR3 and the top hut of the PR3 tank. In addition, we cleaned the outside of 3 ceiling doors on the PR3 tank.

[miyoki, omae, yamaguchi, yoshimura, hayakawa]

We put a cover over the floor at 2F area around PR2 and the top hut of the PR2 tank. In addition, we cleaned the outside of 3 ceiling doors on the PR2 tank.

The movie is for L2 at KAGRA site due to M5.3 around 05:26 on the 6th, Jan. Actually, the swing amplitude and duration are larger and longer than L1.

I started taking movies in the corner station only when the camera auto-taking was triggered by shaking, such as earthquakes. The movie is about the bar on the ladder near IYC from the camera set on BS's clean booth's cable rack. The magnification is x 30. I will select a better position for monitoring.

I guess the pitch and Yaw motion of the camera will be enhanced on the cable rack by earthquakes because of the not-so-strong support of the cable rack.

The attached movie corresponds to M4.8 at 0:37-38 on 4th Jan. The camera could show the shaking in the corner station even the Japanese earthquake level was 1 in the Mozumi area (L1 cannot be sensed by most people).

A note PC in the Fan Room. Please don't touch it.

Purpose

KAGRA SAVIK-net and warning mail sending can work during a power outage.

Present situations and some actions

• Each KAGRA SAVIK-net instrument at "the Atotsu Fan room", "the Corner Pre-Room" and "the Yend Pre-room" seems to have a battery for a PC and its instrument. In addition, they are connected with each other by their own optical fibers --> OK.
• We don't know the situation of many sensors that should send signals that tell their status. (Cubicles, Water pumps, Fan, O2 sensors etc.) ---> We need checks.
• A warning mail-sending PC that was added by me at the Hokubu-kaikan circuit-making room was a notebook-type PC --> Additional battery is not necessary because it has its battery inside. However, the network switch that is connected with this PC and the general network switches in DAB/Hokubukaikan and in the KAGRA site have no battery. ---> Batteries are necessary for some of these network switches. 
• In addition, this warning mail-sending system relies on SINET at SK and the KAGRA network. --> If there is a power outage in a wide area around Higashimozumi and KAGRA, these networks will be down. So it is better to prepare an independent network for one more warning mail-sending PC  ---> Today, I added one more note PC that is connected with the CATV network in the Atotsu Fan Room, and a battery for the CATV router and the network switch of KAGRA in the fan room. But, the actual usage of this battery will be done on 1st December when the power line check will be done for the Atotsu cubicle. (Note: we don't know whether the CATV network can be alive or not if there's a power outage around the Higashimozumi-area, because it should have some signal boosters that require electrical power. Actually, such as a star link network is maybe an ideal solution to be free from electrical power in the internet.)

Ushiba-san, Ikeda

I installed the power supply for the EXV IM heater.
I then restored power and networking to STEPPER.
This completes the entire IM heater installation.

The usage is the same as K-Log26694.
https://klog.icrr.u-tokyo.ac.jp/osl/?r=26694

About the network

We removed the unused network switch from the DGS.
This was then converted to PICO.

Front room -> VIS mini rack Port7.
-> this SW 
 Port.1: to mini rack
 Port.2: Stepper Power Supply
 Port.3: IM Heater Power Supply
 

Ushiba-san, Ikeda

EYV's IM heater was connected to the power supply and the DSUB cables of IXV and IYV were replaced.

EYV connected MOVING MASS to Port.4 of PicoNetworkSwitch and IM HEATER to Port.5.

The usage is the same as K-Log26694.

New Pico Networks network switches installed in an IXV2 rack.

And connected with IM heater power supply.
IXV 1st:
 Port.1: Trunk (Poe power)
 Port.2: to 2nd
 Port.3: StepperFR
 Port.4: StepperIP
 Port.5: ITXX Picomotor
 Port.6:Standalone Stepprmotor
 Port.7: Pico rebooter
 Port.8: VIS temperature regulator

IXV 2nd:

 Port1: from 1st
 Port2: MovingMass power supply
 Port3: IM Heater power supply
 OtherPort: Empty

Ushiba-san, Ikeda

I connected the power supply to the IM heaters of IX and IY and also connected LAN.
IX did not have a connecting cable to DSUB and could not connect to the output of the power supply.

IY connected power supply to LAN.
IX did not have a free port on the network switch, so only the IP address was set and no connection was made.

PicoNetworkSwitch:
IX:
 Port 6: IM heater
IY:
 Port 7: IM heater power supply
 Port 8: Moving mass

Usage:
WEB Interface is sitemap-FCL-PowerSupply(Web Interface)
After entering the usual password, ssh automatically, set port forward, and open Firefox.
When you close it, close Terminal as well.

Cable documentation:JGW-E2315309
 

Workers:

Kimura and M. Takahashi

Abstract:

Items temporarily stored in the parking lot were brought into the central machine room.
The items brought in were spare parts for ICF305 gate valves, ICF152 gate valves, and ICF70 gate valves.
These items are stored in the central machine room.
The parking lot was released from occupancy accordingly.

Workers:

Kimura, M. Takahashi, Omae, Yamaguchi, Yasui and Kamioka-kogyoh members

Abstaract:

Today ( July 5) morning, unnecessary metal materials collected in the parking lot space were taken out to the Sunouchi Warehouse.
After that, items to be stored (mainly Gate Valves (ICF305)) were brought in from the Sunouchi warehouse and temporarily placed in the parking lot space.
The temporarily stored items are scheduled to be brought into the storage space in the central machine room on Friday ( July 7).

Workers:
 KImura, M. Takahashi, Omae, Yamaguchi and Yasui

Abstract:
In order to dispose of unnecessary metal parts and other materials in the KAGRA mine, we collected them in the parking lot.
The disposal is scheduled to take place on the morning of July 5.
We will also bring in materials from the Sunouchi-Sohko to be stored in the central machine room.
The materials brought in will be temporarily placed in the parking lot.

I noticed that one FFU for a stocking area along the IMC duct tube is operated. I turned off it.

The followings are Monday's activities,

• EYV　10:03
• EYV　11:02
• IYV　11:36
• IXV　11:37

The followings are Monday's activities,

• EYV　9:55
• EXV　9:37~38
• IYV　10:18～10:19
• IXV　10:20～10:21

The followings are Monday's activities,

• EYV　9:54～9:55
• EXV　9:40
• IYV　10:23
• IXV　10:25

The followings are today's activities,

• EYV　9:59
• EXV　10:58
• IYV　10:02～10:03
• IXV　10:03～10:04

The following are the V area activities, 

• EYV 10:02
• EXV 11:01
• IYV 9:27~9:28
• IXV 9:29~9:30

V area activities.

• EYV 　9:59～10:00
• EXV　 9:50～9:53
• IYV    10:35～10:37
• IXV　 10:38～10:40

I added more as photos. The plate along the shorter side is just put on the plates along the longer side by using rubber sheet.

So please be careful of the hight difference between them. Please walk slowly around AS tables.

[miyoki, hayakawa, yoshimura, takahashi]

At present, the optical axis level on the AS table can be same with eyes of some researchers in KAGRA. So we are now putting stepping floors to enhance the floor hight to avoid this situation. (no photo, sorry)  We believe this no troubles for other researchers because the ceiling hight is high enough around the AS table.