Wanda V., Reinhardt R. 

On Friday (08/07) we connected both fibres which measure the arms to the Febus interrogator, with the X arm on Ch1 and the Y arm on Ch2. This frees up the Sintela interrogator for Reinhardts experiments. 

The Febus interrogator is now measuring at 2500 Hz with a downsample factor of 10 before saving, coming to a recorded sampling rate of 250 Hz. The gauge length was 6m. In case there is a crash or the measurement needs to be restarted, the pipleline to load is LIGO_20260807_DS_SR_Writer_both250hz_v2. Filesize is ca 50 MB/min/channel

Monday August 10th: 
We measured at 10 m gaugelength over the weekend and it was changed to 6m at 11:00 am (PST) on Monday. 

The filesize is roughly 100 MB/min for the 6m gaugelength (so 200 MB/min for both channels) and roughly 60 MB/min per channel for 10m GL. If this measurement should be restarted, the pipeline is LIGO_20260807_DS_SR_Writer_both250hz_v3. 

In principle, the interrogator can now run "as is" through IR1, but we are still free to change any of the settings.