The DSSD has been exchanged and aligned in 
November 2020. After bakeout at 140°C 
(externally, 120°C at internal temp. Sensor) 
for more than a week, the vacuum in the setup 
is roughly 4.5e-10 mbar.

After the bakeout the detector had to be 
realigned, it was lower by 1-2 mm. Using the 
line laser the realignment was done by 
touching only the screws on the far part of 
the base of the flange. These screws have been 
thightend by about a 1/4 turn after releasing 
the headless positioning screw accordingly.