During an extensive campaign at PSI, the Mu3e collaboration for the first time operated parts of the detector inside the experiment magnet and with muon beam stopping on a target in the center of the experiment. The pixel detector succesfully demonstarted operation with high-flow gaseous helium cooling. A slice of the final data acqusition system was employed, allowing for thorough tests of firmware and software. The beamtime was also used to optimize beam injection into the experiment solenoid. The large data set taken is being analyzed in preparation for another integration run soon.
Have a look at the picture gallery.
