Naoki, Sheila

We changed SRCL offset to see if it can improve the bucket sensitivity. Every time we changed the SRCL offset, we ran SCAN_SQZANG. We modified the SCAN_SQZANG to optimize the BLRMS6 at 2 kHz instead of BLRMS3 at 350 Hz. We reverted it after the measurement.

The attachment shows the DARM with different SRCL offset. The nominal SRCL offset is -175. The SRCL offset of -100 is worse than nominal in the bucket, but others are similar. So we left the SRCL offset at nominal value. Compared to O4b start, squeezing is good above 1kHz, but worse below 1kHz.