[Michimura, Akutsu, K.Tanaka]

 

On 2018/10/11

 

We almost installed the optical system for IR-beam from HBS1 by using green ghost beam. Figure 1 is the overall view. But the beam was too weak and the large part of the green power transmitted by PYD mirrors for IR, so we could only align the beam upto TMSX IR QPD1 and IR PD. TMSX IR QPD2 and TMSX_IR camera are placed at nominal positions. We checked TMSX_IR camera is working with a laser pointer. 

 

Michimura-san installed beam dumps for green-path to protect from the reflection from QPDs, PDs and cameras(Figure 4). And He and Akutsu-san fixed cables on the optical table with cable ties(Figure 2), and temporarily taped the cables on the floor(Figure 3).

 

We list up the difference between the design (JGW-T1808962) and current set up.