Author/Authors :
Adams، نويسنده , , M. and Buchholz، نويسنده , , P. and Dahlhoff، نويسنده , , A. and Feiden، نويسنده , , D. and Gنrtner، نويسنده , , V. and Grams، نويسنده , , M. and Haarmann، نويسنده , , M. and Hergesell، نويسنده , , A. and Hِlldorfer، نويسنده , , F. and Ielapi، نويسنده , , G. and Jakobs، نويسنده , , K. and Jung، نويسنده , , T. and Kِpke، نويسنده , , L. and Kuhnert، نويسنده , , E. and Meder، نويسنده , , D. and Schنfer، نويسنده , , U. and Schmi، نويسنده ,
Abstract :
For liquid argon calorimeters electronegative impurities dissolved in the medium degrade the detector response and deteriorate the energy resolution, especially at high energies. A concept for a purity monitoring system for liquid argon calorimeters has been developed and is presented here. Special combined monitors of 241Am- and 207Bi-cells are used to monitor the concentration of impurities. The working principle as well as results from test measurements are discussed.
