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 Thu Aug 1 12:12:35 2013, gautam, Update, CDS, New model for endtable PZTs 
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 Thu Aug 1 13:09:17 2013, gautam, Update, CDS, New model for endtable PZTs-procedure
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Thu Aug 1 15:06:59 2013, jamie, Update, CDS, New model for endtable PZTs
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Thu Aug 1 15:28:44 2013, gautam, Update, CDS, New model for endtable PZTs-problem solved
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Thu Aug 1 20:58:56 2013, gautam, Update, CDS, New model for endtable PZTs-MEDM Screens setup
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Mon Aug 5 18:18:32 2013, gautam, Update, CDS, Choosing LO Amplitudes and Frequencies
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Mon Aug 5 19:10:01 2013, Koji, Update, CDS, Choosing LO Amplitudes and Frequencies
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Tue Aug 6 16:36:51 2013, gautam, Update, CDS, Choosing LO Amplitudes and Frequencies-revised
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Wed Aug 7 23:40:49 2013, gautam, Update, CDS, X-End Green ASS - A first update
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Sat Aug 10 05:53:51 2013, gautam, Update, CDS, X-End Green ASS - Roundup
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Mon Aug 12 12:57:59 2013, Jenne, Update, CDS, X-End Green ASS - Roundup
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Mon Aug 12 13:30:33 2013, Jamie, Update, CDS, X-End Green ASS - Roundup
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Message ID: 8972
Entry time: Tue Aug 6 16:36:51 2013
In reply to: 8968
Reply to this: 8983
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| Author: |
gautam |
| Type: |
Update |
| Category: |
CDS |
| Subject: |
Choosing LO Amplitudes and Frequencies-revised |
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I redid the power spectrum measurement for the X-arm green transmission after aligning the arm to green using the ITMX/ETMX Pitch and Yaw sliders on IFOalign.
The Y-axis now reflects the relative intensity noise (RIN), which I obtained by taking the average value of the X-arm green transmission using tdsavg. Based on this measurement, I have now picked four new frequencies at which to try and modulate the PZT mirrors: 10, 19, 34 and 39 Hz. Bandpass filters in the LIA stage have been appropriately modified.
Power Spectrum:
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