We have set 12 permanent calibration lines in CALnoise: a set above 50 Hz and a set above 355 Hz, spaced by 0.5 Hz. The 8 sent to the arm mirrors are visible in the DARM signal, the ones sent to PR and BS are not visible. The current frequencies are given in the table.
| Mirror | Freq1 (Hz) | Ampl1 (mV) | Freq2(Hz) | Ampl21 (V) |
|---|---|---|---|---|
| WI | 51.8 | 2 | 356.8 | 20 |
| PR | 52.3 | 2 | 357.3 | 20 |
| BS | 52.8 | 2 | 357.8 | 20 |
| NE | 53.3 | 1 | 358.3 | 2 |
| WE | 53.8 | 1 | 538.8 | 2 |
| NI | 51.3 | 2 | 359.3 | 20 |
WARNINGs:
- They are currently started by default in CALnoise and never stopped. If this is a problem for the lock acquisition, they can be stopped by putting 0 in the CALnoise configuration, lines 126-131.
- We should setup a mechanism, in ITF_LOCK, to start them when we reach some state close to dark fringe and stop them in the DOWN state.
-
DMS: CALnoise and LockMoni have been modified in order to separate the noise and the permanent lines:
- DMS Injections flag is green or red when noise in off or on
- DMS Injections flag should green/yellow/red when permanent lines are off/on/higher than expected. Of course, this will be modified when the permanent lines behaviour will be fixed.
