Author/Authors :
Wiechula، نويسنده , , J. and Braun-Munzinger، نويسنده , , P. and Daues، نويسنده , , H. and Frankenfeld، نويسنده , , U. and Garabatos، نويسنده , , Eric C. R. Hehner، نويسنده , , J. and Renfordt، نويسنده , , R. and Schmidt، نويسنده , , H.R. and Stelzer، نويسنده , , H. and Vrani?، نويسنده , , D.، نويسنده ,
Abstract :
The baseline gas mixture which will be used in the ALICE TPC is 90% Ne and 10% CO 2 . The change of the drift velocity due to changes of the CO 2 concentration as well as N 2 addition has been studied in high-precision measurements at drift fields between 100 and 900 V/cm. Also a precise absolute measurement of the drift velocity has been made. All measurements are compared with calculations.
Keywords :
TPC , N 2 , Ne– CO 2 mixture , ALICE , Drift velocity , CO 2 dependence
