====== 19.10.2016 ======
  * I cleaned the vacuum chamber
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  * I tested the all M6 holes from the vacuumchamber --> all threads are deep enough!
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  * 2x M4-breadboards (incouple and outcouple) and there spacers are done!
  * I assembled the mounting with vitonballs and zerodur rods. --> We need two vitonballs of each metal sheet side. Otherwise the mounting is to wobbly! --> 8x new sinkings for the vitonballs! If you fixed the mounting screws: tighten them crosswise!
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  * Leaktest --> positiv :-/ --> New weld!
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**ToDo in Hannover**
  * Design and order new spacer instead ofeccentrical spacer (1mm from centre) 
  * 8x sinkings for the vitonballs
  * 3x 1cm sinking grooves for the glasballs (1mm less then the theory). Use 90° milling head! Front: 2x vertical to the zerodur rods, Back: 1x parallel to the zerodur rods! Distance between the middle of the two mountings 28cm.

**ToDo in PTB**
  * Sebastian took the vacuum chamber to the workshop for a new weld!