Shoda, YaoChin and Yuhang
After the recovery of top coil(H1) of input mirror, we could use total four magnets to drive the length of filter cavity. Following the method of entry 1708, we calculated a driving index for input mirror. However, up to now, all the index is decided by the decouple of length/pitch/yaw at 4Hz.
The driving index is as following now
| H1 | 0.79 |
| H2 | 1 |
| H3 | 1 |
| H4 | 0.73 |
However, we could see from the following figure. We still have coupling at other frequencies.