1. Set the PT100 with jig to the place which we discussed in yesterday morning(9/30)
2. Check the IR beam path by sensor card
3. Set ondotori on the wall (They are not on the optical table)
PT01 : Near the laser
PT02 : Near the periscope around the output duct
PT03 : Near the pedestal for the green fiber
PT04 : Near the PMC
PT05 : Near the electrical rack
This position is temporary, especially new laser will be placed near the PT05.
The temperature when I left the PSL room (11:05) was followings;
PT01 : 23.0 deg
PT02 : 23.1 deg
PT03 : 23.0 deg
PT04 : 21.6 deg (Something lower?)
PT05 : 22.8 deg
AIR01 : 23.3 deg (44.5 %)
AIR02 : 23.1 deg (45.0 %)
AIR03 : 23.4 deg (44.9 %)
AIR04 : 23.4 deg (44.5 %)
AIR05 : 23.5 deg (44.7 %)
PSL BOOTH : 23.4 deg (42.4%)
Because there is no claws for fixing between the part where the cable tie is attached and the logger itself, the logger body may fall by own weight.
So I wonder it's better to avoid this fixing method near the optical bench.
Where should I check to know the relation between (AIR01~05) and their position photo in "psl210924.pdf" which Yokozawa-kun delivered us?
Very stable within 0.1 deg.
[Miyoki, Izumi]
Abstract
Although we could not decide the absolute values for temps, the only PT04 itself seems to show lower temperature than the other.
Measurement
We checked the temp for PT01-05 aluminum blocks by using the radiation type thermometer within 2 minutes for all positions.
- Just after entering the room around 10:17 ("displayed temp")
- PT01:23.5 (Laser)
- PT02:23.9 (Periscope for IMC injection)
- PT03:24.1 (Pole for GR fibers)
- PT04:24.2 (Near PMC)
- PT05:24.0 (Near Electronics Rack)
- Heater on the PMC (Near PT04): 25.2 -> This means that this radiation type thermometer can distinguish ~25 and ~24 between near positions.
- Several points on the floor around the optical table: 21.8 ~ 21.9
- About 10 minutes after the first trial ("displayed temp")
- PT01:22.4
- PT02:22.8
- PT03:22.8
- PT04:22.8
- PT05:22.7
- Heater on the PMC: 25.1
- Thermometer body for the precision cooler: 22.9
- Temp number on the precision cooler: ??
- I doubted the temp became changing because of the precision cooler's feedback that was triggered by our activities.
- Around 10:40 ("displayed temp")
- Thermometer body for the precision cooler: 23.8
- Temp number on the precision cooler: 23.8
- We got out of the PSL room around 10:45
Anyway, the radiation type thermometer did not show 1 degree less temp for PT04 than PT02,03,05.
PT01 seems to show less value than PT02,03,05 by ~0.5. The black cover that houses PT01 affects the temp for PT01??
We will discuss the new position of PT100+ondotory system.