Author/Authors :
Hill، نويسنده , , J.C. and Huang، نويسنده , , H.Z. and Barish، نويسنده , , K.N. and Coe، نويسنده , , S.D. and Cormier، نويسنده , , T.M. and Ewell، نويسنده , , L.A. and Davies، نويسنده , , R.R. and Fachini، نويسنده , , P. and Finch، نويسنده , , L.E. and Hirsch، نويسنده , , A.S. and Hoversten، نويسنده , , R.A. and Kim، نويسنده , , B. and Lajoie، نويسنده , , J.G. and Libby، نويسنده , , B. and Majka، نويسنده , , R.D and Munhoz، نويسنده , , M.G. a، نويسنده ,
Abstract :
The E864 experiment at the AGS is designed to carry out high sensitivity searches for a variety of possible new particles using relativistic heavy ion Au beams on Pb and Pt targets. In order to reach the desired sensitivities, a level-2 “late energy” trigger was built to select events in which a heavy particle is detected in a hadronic calorimeter with deposited energy and time-of-flight from the target exceeding preset values. The physics motivation for the trigger is discussed and and details of its hardware and software design are given. Performance results from recent E864 data taking runs are presented.
