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Entry  Mon Jun 16 12:58:50 2014, manasa, Summary, IOO, Ringdown recap  Ringdown_815.pdfMCringdown_cum.pdfcum_plot.png
    Reply  Mon Jun 16 15:32:12 2014, rana, Summary, IOO, Ringdown recap  
Message ID: 10043     Entry time: Mon Jun 16 15:32:12 2014     In reply to: 10042
Author: rana 
Type: Summary 
Category: IOO 
Subject: Ringdown recap  

 

To do this better:

1) Just step the analog input to the AOM (i.e. no RF switch) and measure the PMC trans output with a fast DC coupled PD. IMC should be unlocked and disable during this part. We want the PMC ringdown to be faster than 1 us.

2) Re-install a fast PD in the MC trans path without disrupting the existing MC trans QPD setup.

3) Measure IMC ringdown and fit the data to find the cavity losses.

4) Think about how to use the Isogai, et. al (2013) technique to better measure the losses, taking into account the mirror transmissions.

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