Presence:

• Basel: Werner
• Bochum: Cathrina, Claudius, Fritz-Herbert, Matthias, Malte, Marvin, Miriam, Patrick, Stephan, Tobias H., Tobias T., Tom
• Bonn: Christoph
• Groningen: Myroslav
• Uppsala: -
• GSI: -
• Mainz: David

Subunits:

• Tests with shrinking tube around the crystal cover foils in order to firmly press it to the crystal surface not very promising
• Problem is the chamfer on all crystal edges: The foil will be pressed to the edges and is never touching the surfaces, regardless of how hard you shrink or wrap (tried also tape...)
• Backward endcap colleagues are going to test crystal covers including the chamfers in the crystal cover shape
• Is it possible to precisely fold those covers without braking the foil at the edges?
• Is the precision of the covers good enough?
• The tolerances of the chamfers are stated to be quite high ('please add the values here!')
• Mainz will try to get first prototypes of 'chamfered covers' until the December meeting
• While re-equipping the crystals in the VPTT unit prepared to be shipped to Bonn we lost two valve-crystal connections!
• There is no idea where it comes from. We will modify the cleaning procedure prior to glueing by changing the cleaning solvent to the specially recommended Dow Corning fluid
• As with the APD unit the broken coupling is always the glue-crystal connection

• There are two ADC+digitizer units available to be delivered to Giessen and Mainz
• However, they will be needed in Giessen first for the preparation of the MAMI beamtime in December
• Bonn workshop can manufacture the ADC crates, financing has to be clarified