Vincent finished installing the HEPI system. Because the ISC signals are now added into the HEPI feedback just after the compensation filters, the gain and sign have changed.

Now we have a gain of -2 (from +0.2). Also the units are not in nm anymore .... not a drama but makes thinking about limits a bit harder ...

I engaged the ISI isolation on ITM, but the ETM kept tripping so I left it in damping only (didn't further investigate).

Left the cavity locked for the night.