achievements:

• measured delay scans on 16 nm samples at different magnetic fields (4 runs) before the problem below appeared

problems:

• scroll pump of the FFT degraded, rough vacuum got worse, this led to pump in error state and interlock valves. The scroll pump was replaced, vacuum re-established, but we could not see any signal from the samples, only diffuse scattering. We thought this was due to ice frozen on the samples when the pressure increased. We warmed up the cryostat, verified that the conditions of the samples are fine again, and finally started cooling down again.