Monday Meeting 0115
Participants
Kokeyama, Izumi, Nakano, Somiya, Uehara, Moriwaki, Matsushima, Yamamoto, Ono, Doi,Kanbara, Yokogawa, Kitazawa, Sakamoto, Yoshioka, Miyata, Sawada,
Updates from projects
- Those who still don't have the klog account should make contact to Raffaele of NAOJ via an email.
- Somiya-san presented the status and plans for the OMC.
- A critical point for now: they don't have an OSTM mirror in hand. There are two choices: one is to get a 2 inch mirror, the other is to get a substrate from the MIR group and get it polished. If we use a 6 cm thickness mirror from MIR, the thickness might be a problem although it shouldn't clip the beam in theory.
- Wiring is not done at all at the moment.
- the thickness of the aluminum breadboard is set such that the weight is identical to that for the silica breadboard.
- LEX-ZERO has a small thermal expansion coefficient. Actually smaller than invar. Out gassing was measured by an outside company.
- The range of the PZT should be large enough if the temperature swings within +/- 0.3 deg.
- A wrong side of the bottom surface was polished for OBS1. This was fixed by polishing the correct side by an outside company.
- OBS3 needs to be out when adjusting the angle of OMC2 by a micrometer.
- RF DARM will be extracted from the diode in transmission of OSTM. Also, WFSs are from the same place.
- The suspension cage can have actuators, but currently they are not planning to attach the actuators.
- If the aluminum OMC is good enough, it can stay as a final component in chamber, as opposed to the silica one.
- No QPD will be placed behind OMMT1.
Plan for this week
- 1/16 Tue ISS work in Kamioka
- 1/17-20 NiigataU Nogai-kun visit
Topic of this week
OMC report (Somiya)