20190205

Optics name (old -> New)

Type of the optics

The holder

Note

1st steering mirror -> STM3

Newly opened "CVI HM-2037-45"

Polaris-K2S1 + washed but not vented M4 screw + ME-KAGRA-1704107-A-DWG

I determied to leave the M4 screw without a vent hole, as there is a groove on the pedestal. The outer diameter of the optics was wiped to remove the pencil memo. The original one (TFVMQ-50.8C10-20-W1D-532/1064-ARS-30/40D) was stocked in the desiccator as of 20190205

Harmonic BS -> HBS

HBSY21

Polaris-K2S1 + washed M4 screw + OptoSigma VRO-12-100 + VRS-12-100 + VBSP-40100

2nd steering mirror -> GST0

Newly opened "TFMQSP-50.8C10-20-532/1064-0/26D"

Polaris-K2S1 + washed but not vented M4 screw + ME-KAGRA-1704107-A-DWG

I determied to leave the M4 screw without a vent hole, as there is a groove on the pedestal. The outer diameter of the optics was wiped to remove the pencil memo. The original one (TFVMQ-50.8C10-20-W1D-532/1064-ARS-30/40D) was stocked in the desiccator as of 20190205. When the mirror was inserted to the holder, one of the edge of the mirror was broken... probably due to the narrow aperture of the holder...

Collimation lens for green (3rd BRT lens for green) -> BRT3

SLB-50.8-200NM

VLHG-50.8 + washed M6 imo screw + OptoSigma VRO-12-100 + VRS-12-100 + VBSP-2460

VBSP-2460 should be replaced to VBSP-40100 later.