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Carl Blair - 18:20 Wednesday 12 February 2025 (32646) Print this report
Comment to Temperature change identification of ETMX violin modes (32614)

I updated the tables with Yokozawa-san's very nice measurements over the last 2 days (Bottom rows). They look self consistent and consistent with some previous measurements and are consistent with most of the temperature change ETMX measurements other than the temperature identification of a mode at 173.2Hz that I think could merit further investigation by driving ETMX at this frequency, Yokozawa-san measurements identify it as ITMX (spectrum attached : Note new XML file with 10W lock time 31/1/2025 07:00UTC with 30 averages and better signal tonoise ratio).  I also used Yokozawa-san's measured frequencies to update notch filters and active damping filters for ETMX.

ITMX

klog32547 173.21 174.27 179.88 180.27 181.17 181.90 181.93 182.34 184.79
klog32550 179.88 180.27              
klog26113 168.285

174.226

178.400 179.381 184.741? 187.290      
klog32133   174.141              
klog32643 173.203 174.281 178.125 180.281 181.172 181.938 182.344    

ITMY

klog32547 176.77 178.66 179.59 180.13 180.60 181.17 181.89 181.93 181.97 182.34 184.62
klog26113 176.504

179.897

182.25? 184.741?              
klog32133     176.594                
klog32643 176.766 178.672 179.594 180.125 180.984 184.609          

ETMX

klog 168.29 ? 173.15 178.82 180.60 182.875 184.742 174.25 ? 181.34 ? 181.84 ?
klog26113 167.100

177.862

178.820 181.340 182.872       190.754
klog32133           184.562      
klog32548 178.93 180.23 180.60 182.45 182.92 183.23 184.79    
klog32643 178.938 180.234 180.609 182.453 182.922 183.234 184.797    

ETMY

klog32546 166.84 167.81 168.31 178.66 179.71 180.13 180.60 182.45 189.93 191.38
klog26113 168.012

173.149

  173.125   180.782 181.836? 183.400 189.608  
klog32133 klog31963             187.421 189.716  
klog32643 166.844 167.266 167.812 168.312 183.625 187.531 189.922 191.156? 191.375?  
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