20180328

Today's activities

Workers: K. Nagano, Ko. Yamamoto, Akutsu

Today's activities were complicated as summarized here.
Once put two steering mirrors, which can reflect both 532/1064nm light, and had the green beam go outside of EXT
Constructed a periscope for IR beam taking advantage of the output green beam, assuming the beam path of the two color would not so different.
But we changed our mind as summarized here.
Installed a harmonic BS and a 3rd BRT lens for green, according to Morozumi's idea.
As described above, a question is the position of the 3rd BRT lens.

The important information is what were used and what should be replaced later.

Optics name	Type of the optics	the holder	Note
1st steering mirror	TFVMQ-50.8C10-20-W1D-532/1064-ARS-30/40D (From PSL room)	Polaris-K2S1 + washed but not vented M4 screw + ME-KAGRA-1704107-A-DWG (all from NAOJ)	The M4 screw needs vent hole; The foot of the pillar is now fixed with a tentative dog clamp, and should be replaced later; there is a memo in the mirror's outer diameter and need to be erased for vac compatibility.
Harmonic BS	HBSY21 (From NAOJ)	Polaris-K2S1+ washed M4 screw + TR75V/M + PH75V/M + washed M6 screw + BA2V/M (all from NAOJ)	Nothing special but the post system should be replaced with a fixed height one.
2nd steering mirror	TFVMQ-50.8C10-20-W1D-532/1064-ARS-30/40D (From PSL room) today.	Polaris-K2S1 + washed but not vented M4 screw + ME-KAGRA-1704107-A-DWG (all from NAOJ)	The M4 screw needs vent hole; The foot of the pillar is now fixed with a tentative dog clamp, and should be replaced later; there is a memo in the mirror's outer diameter and need to be erased for vac compatibility.
Collimation lens for green	SLB-50.8-200NM (From NAOJ)	VLHG-50.8 + unwashed M6 imo screw + TR75V/M + PH75V/M + washed M6 screw + BA2V/M (all from NAOJ)	The VLHG-50.8 required M6 imo screw!!!!!!; need a proper tool to tighten the PEEK retainer of VLHG-50.8; there is a memo in the mirror's outer diameter and need to be erased for vac compatibility.

Measure the height with a laser leveler?
Locate the BRT on the stage base on XXX as references.
Make GPT on the optical table
Make a model to drive signals from the TMS
Check the response of the TMS by swinging BS, PR2, PR3... etc... with commissioning people
Endのend用のフランジとりつけ。たぶん最後のほうで。
そこのフランジにとりつける透過光用ビューポート。まだ柏にあるはず。
外側の光学定盤の上の取り回しを考えよ。