Madi

I've been reviewing data from 2024 to quantify the ALSX mode-mismatch, with the hope of comparing the mode-mismatch from the cavity scan to the mode-mismatch observed from the return ALS beam, measured 90370. The cavity scans were recorded in 80077 , and follow on from the ALSY cavity scans 80065. I pulled the historical data into ndscope, so I was able to get direct numbers for the relevant data. 

There were two scans performed - one with an 'okay' alignment, and one with 'better' alignment. The 'better' alignment scan does not swing through a full FSR, so the mode frequencies could not be measured, however the magnitude distribution ratio could still be calculated to determine the mode-mismatch. 

The 'okay' alignment had a 2.19% mode-mismatch, while the 'better' alignment had a 1.78% mode-mismatch.