The performance of the diamond active target of the PADME experiment
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2020-04-24 |
| Journal | Journal of Instrumentation |
| Authors | I. Oceano |
| Institutions | University of Salento |
| Citations | 5 |
Abstract
Section titled āAbstractāA large size, thin, high-quality polycrystalline diamond slab was used to build the full carbon active target of the PADME experiment. PADME is searching for a dark photon of mass up to 23.7 MeV, with a 550 MeV pulsed positron beam provided by the Beam Test Facility of the Laboratori Nazionali di Frascati. The target was built in the laboratories of INFN Lecce and University of Salento by realizing graphitic strips on both sides of a commercial CVD diamond sensor of 2 Ć 2 cm2 cross section and 100 microns thickness, by means of a UV excimer laser. The strips, with 1 mm pitch and oriented in orthogonal directions on the two surfaces, allow to reconstruct two views of the beam profile and to evaluate the particle multiplicity of each bunch. The detector was operated from September 2018 to end of February 2019. Here a review of the status, the operation experience, and the performance of the device in the PADME experiment is presented.