Darmstadt 2016 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 21: Instrumentation V

HK 21.5: Talk

Tuesday, March 15, 2016, 15:15–15:30, S1/01 A2

High Voltage Active Pixel Sensors for the PANDA Luminosity Detector — •T. Weber, F. Feldbauer, P. Jasinski, A. Karavdina, R. Klasen, H. Leithoff, S. Maldaner, C. Motzko, S. Pflüger, and M. Fritsch — Institut für Kernpysik und Helmholtz Institut Mainz

The PANDA-Experiment will be part of the new FAIR accelerator center at Darmstadt, Germany. It is a fixed target experiment using a antiproton beam with very high resolution for precision measurements in the field of hadron spectroscopy. For a variety of measurements like energy-scans the precise determination of the luminosity is needed.

The luminosity detector will determine the luminosity by measuring the angular distribution of elastically scattered antiprotons very close to the beam axis (3-8 mrad). To reconstruct antiproton tracks four layers of silicon monolithic active pixel sensors (HV-MAPS) will be used. Those sensors are currently under development by the Mu3e-collaboration in Heidelberg.

In the talk the concept of the luminosity measurement is shortly introduced before results of laboratory and beam time measurements with a tracking station consisting of HV-MAPS prototypes are presented.