PADME diamond active target

“Why is important to have an active target in the experiment?”

The missing mass resolution is related to the resolution of the production point of the dark photon, as shown in the figure below.

“Why is a diamond detector a good candidate for the PADME active target?”

  • High radiation hardness
  • Low atomic number(Z=6), that limits the Bremsstrahlung interactions, principal noise of the experiment

 

The PADME active target will be one of the first diamond detectors with graphitic strips ever used in High Energy Physics experiments.