[Miyo, Komori, Shoda]
* Mirror tilt check *
We found that the mirror is largely tilted after when we checked the tilt after the suspension wires are clamped.
Therefore, we tried to push the mirror in pitch to compensate the tilt. And also, we again checked the mirror position and tilt not only with oplev beam, but also with the EQ stop screws on the RM to fix the mirror.
After we pushed the mirror to be vertical using the EQ stop screws, the mirror tilt became about 13 mrad with freely suspended state. (Before: 15 mrad)}
But it did not move any more even though we pushed more.
Also, we checked the length of the EQ stop screws coming out from the RM, in order to get rough idea where the mirror is.
As a result, the mirror is tilted by about 14 mrad by checking the length of the EQ stop screws coming out from the RM.
In addition, we noticed the mirror seems to be thinner than design. (See attached pic.)
According to the measurement, the mirror thickness should be about 92.2 mm, while the PR2 mirror should have the thickness of 94.3 mm according to the database.
* TF measurement *
We have set the photo sensors in front of the RM and checked the transfer functions.
The results will be updated soon.
* Geophone assembly test *
We are asked to assemble the geophone into the pot for Type-A and Type-B.
And we found that inner diameter of the top cylinder is so small that we cannot close the pot because it stucks at the chamfer of the geophone.
We will checke the dimension again next week.
