PoS - Proceedings of Science
Volume 380 - Particles and Nuclei International Conference 2021 (PANIC2021) - Development of accelerators and detectors
The PADME Detector
F.Β Pinna* and Β On behalf of the PADME Collaboration
Full text: pdf
Pre-published on: March 01, 2022
Published on: β€”
The Positron Annihilation into Dark Matter Experiment (PADME) aims to search for a dark photon
(𝐴′) produced in the process 𝑒+π‘’βˆ’ β†’ 𝛾𝐴′. It uses the positron beam provided by the DAΞ¦NE
LINAC, maximum energy 550 MeV, at the Frascati National Laboratory of INFN. The aim of
the experiment is to evaluate the missing mass of single-photon final states following positron
annihilation on the electrons of a thin target. To measure such a reaction, the PADME apparatus
has been built. It consists of a small-scale detector composed of the following parts:
β€’ a diamond active target, to measure position and intensity of the beam in each single bunch;
β€’ a beam monitor system consisting of two different silicon-pixel detectors;
β€’ a spectrometer, to measure the charged particle momenta in the range 50-400 MeV;
β€’ a dipole magnet, to deflect the primary positron beam out of the spectrometer and calorimeter
and to allow momentum analysis;
β€’ a finely segmented, high resolution electromagnetic calorimeter, to measure 4-momenta
and/or veto final state photons.
Each element has specific requirements that are stringent and sometimes at the limit of present
DOI: https://doi.org/10.22323/1.380.0079
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