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Entry  Wed May 15 19:00:26 2019, anchal, DailyProgress, South Cavity, Changes on South Path towards increasing power on FSS RFPD  
    Reply  Thu May 16 16:34:30 2019, anchal, DailyProgress, North Cavity, Changes on North Path towards increasing power on FSS RFPD  
Message ID: 2348     Entry time: Thu May 16 16:34:30 2019     In reply to: 2346
Author: anchal 
Type: DailyProgress 
Category: North Cavity 
Subject: Changes on North Path towards increasing power on FSS RFPD  

Similar to South Path, I have inserted a beam splitter in the north PMC reflection path. This is a BS1-1064-90-1037-45UNP beamsplitter set such that about 10% light is transmitting. See optical layout for the path changes. I found that the modulation depth fro North PMC PDH was already low enough (0.246), so I did not reduce it. I have changed the DC transimpedance of North Cavity Reflection RFPD SN009 similar to the south side to 929.09 Ohms. This has given us ee-way to increase light intensity in the path with autolockers still working.

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