Saito-kun reported today’s SRX/SRY length measurement yielded an unexpected result.
So I independently performed a cross-check of the SRX data analysis and obtained a result which is consistent with the previous measurement.
Fig. 1 shows the FSR index vs. beat frequency plot for today’s SRX measurement, obtained by applying the today's measurement data to the analysis code that I previously used (klog #37184).
The fitted SRX lengths are
L_SRX_measured (my code) = 68.2862(18) mL_SRX_measured (Saito-kun's code) = 68.2261(18) m
For comparison,
L_SRX_measured (previous measurement:klog #37260) = 68.2842(13) mL_SRX_design = 68.2562 m
The result obtained with my code is consistent with the previous measurement, and this suggests that there may be an issue with Saito-kun’s analysis code.
We would like to discuss this tomorrow.
