Author/Authors :
Anulli، نويسنده , , F. and Baldini، نويسنده , , R. and Calcaterra، نويسنده , , A. and Daniello، نويسنده , , L. and de Sangro، نويسنده , , R. and Finocchiaro، نويسنده , , G. and Patteri، نويسنده , , P. and Piccolo، نويسنده , , M. and Santoni، نويسنده , , M. and Zallo، نويسنده , , A. and Cheng، نويسنده , , C.H. and Lange، نويسنده , , D.J and Wright، نويسنده , , D.M. and Boyce، نويسنده , , R. and Krebs، نويسنده , , J. and Messner، نويسنده , , R.، نويسنده ,
Abstract :
The muon and neutral hadron detector (instrumented flux return or IFR) in the forward endcap of the BaBar detector at SLAC was upgraded by the installation of a new generation of resistive plate chambers (RPCs) and by increasing the absorber. The chamber replacement was made necessary by the rapid aging and efficiency loss of the original BaBar RPCs. Based on our experience with those original RPCs and 24 RPCs with thinner linseed oil treatments, improvements in the design, construction, and testing of the new generation RPCs were implemented and are described in detail.
