The Simbol-X Anticoincidence

J. Chabaud (1) , Philippe Laurent (2) , S. Colonges (1) , J. Barbay (1) , J.-P. Baronick (1) , M. Benallou (1) , P. Ferrando (2) , M. Gilliot (1) , J.-J. Jaeger (1) , M. Nicolas (1) , Edern Ollivier (1) , J. Waisbard (1) , B. Yoffo (1)

1 APC (UMR_7164) - AstroParticule et Cosmologie
2 APC - AHE - APC - Astrophysique des Hautes Energies

The Simbol-X telescope will be constitued by two satellites in formation flight. One will host the mirror module and the other the detector payload. This payload will be built with two main detectors able to measure the position, energy and arrival time of each focused photon, between 0.5 and 80 keV. The high sensitivity required by Simbol-X will necessitate low noise background detectors. To achieve this goal, those detectors will be surrounded by a passive graded shield, aimed to stop the out of field of view photons, and an active anticoïncidence system to tag the passing particles. This anticoïncidence detector, whose conception, optimisation and realization are under responsibility of the APC Laboratory, Paris, is based on plastic scintillator plates associated to multi-anodes photo-multipliers via optical fibers. In this paper, we will present the present status of the anticoïncidence system and its expected performances.

Mots clés: Photomultipliers; phototubes and photocathodes; Neutrino; cosmic rays; and other elementary particles; muon; pion; X- and gamma-ray telescopes and instrumentation; Imaging detectors and sensors

Domaines: Phénomènes cosmiques de haute energie [astro-ph.HE]; Phénomènes cosmiques de haute energie [astro-ph.HE]

J. Chabaud, Philippe Laurent, S. Colonges, J. Barbay, J.-P. Baronick, et al.. The Simbol-X Anticoincidence. 2nd International Simbol-X Symposium, Dec 2008, Paris, France. pp.82-84, ⟨10.1063/1.3149472⟩. ⟨hal-00715347⟩