Author/Authors :
Bazzi، نويسنده , , M. and Berucci، نويسنده , , C. and Corradi، نويسنده , , G. and Curceanu، نويسنده , , C. and DʹUffizi، نويسنده , , A. and Piscicchia، نويسنده , , K. and Poli Lener، نويسنده , , M. and Rizzo، نويسنده , , A. and Romero Vidal، نويسنده , , A. and Sbardella، نويسنده , , E. and Scordo، نويسنده , , A. and Tagnani، نويسنده , , D. and Vazquez Doce، نويسنده , , O.، نويسنده ,
Abstract :
The Multi-Pixel Photon Counter (MPPC) detectors consist of hundreds of micro silicon Avalanche PhotoDiodes (APD) working in Geiger mode. The high gain and the small dimensions typical of these devices, together with their good performances in magnetic field, make them ideal readout devices for scintillating fibers as trigger detectors in particle and nuclear physics experiments like AMADEUS, where such a system is planned to be used to trigger on charged kaons. A prototype setup for this trigger system, consisting of 5 scintillating fibers readout by 10 MPPCs, was built and tested in laboratory and mounted inside the DA Φ NE collider at LNF-Frascati to measure the back-to-back K + K − pairs emitted in the Φ - decay processes. The ad hoc readout electronics was designed and realized at Laboratori Nazionali di Frascati (INFN). A 64 channels setup, with a new dedicated electronics, was then built and characterized in the laboratory. The results of the tests are presented and discussed.
Keywords :
MPPC , Trigger for kaons , Scintillating fibers , AMADEUS experiment
