Author/Authors :
Iodice، نويسنده , , M. and Cisbani، نويسنده , , E. and Colilli، نويسنده , , S. and Cusanno، نويسنده , , F. and Frullani، نويسنده , , S. and Fratoni، نويسنده , , R. Skip Garibaldi، نويسنده , , F. and Gricia، نويسنده , , M. and Lucentini، نويسنده , , M. and Pierangeli، نويسنده , , L. and Santavenere، نويسنده , , F. and Urciuoli، نويسنده , , G.M. and Veneroni، نويسنده , , P. and De Cataldo، نويسنده , , G. A. De Leo، نويسنده , , R. and، نويسنده ,
Abstract :
A proximity focusing RICH detector has been constructed for the hadron High Resolution Spectrometer (HRS) of Jefferson Lab Experimental Hall-A. This detector is intended to provide excellent hadron identification up to a momentum of 2.5 GeV / c . The RICH uses a 15 mm thick liquid perfluorohexane radiator in proximity focusing geometry to produce Cherenkov photons traversing a 100 mm thick proximity gap filled with pure methane and converted into electrons by a thin film of CsI deposited on the cathode plane of a MWPC.
tector has been successfully employed in the fixed target, high luminosity and high resolution hypernuclear spectroscopy experiment. With its use as a kaon identifier in the 2 GeV / c region, the very large contribution from pions and protons to the hypernuclear spectrum was reduced to a negligible level. The basic parameters and the resulting performance obtained during the experiment are reported in this paper.
Keywords :
rich , Kaon identification , Particle identification , Cherenkov detector
