Author/Authors :
Akesson، نويسنده , , T and Arik، نويسنده , , E and Assamagan، نويسنده , , K and Baker، نويسنده , , K and Barberio، نويسنده , , E and Barberis، نويسنده , , D and Bertelsen، نويسنده , , H and Bytchkov، نويسنده , , V and Callahan، نويسنده , , M.V. and Catinaccio، نويسنده , , A and Danielsson، نويسنده , , H and Dittus، نويسنده , , F and Dolgoshein، نويسنده , , B and Dressnandt، نويسنده , , N and Ebenstein، نويسنده , , W.L. and Eerola، نويسنده , , P an، نويسنده ,
Abstract :
Test-beam studies of the ATLAS Transition Radiation Tracker (TRT) straw tube performance in terms of electron–pion separation using a time-over-threshold method are described. The test-beam data are compared with Monte Carlo simulations of charged particles passing through the straw tubes of the TRT. For energies below 10 GeV, the time-over-threshold method combined with the standard transition-radiation cluster-counting technique significantly improves the electron–pion separation in the TRT. The use of the time-over-threshold information also provides some kaon–pion separation, thereby significantly enhancing the B-physics capabilities of the ATLAS detector.
