Author/Authors :
Volkerts، نويسنده , , M. and Bakker، نويسنده , , A. and Kalantar-Nayestanaki، نويسنده , , N. and Fraiquin، نويسنده , , H. and Eads، نويسنده , , A. and Rinckel، نويسنده , , T. and Solberg، نويسنده , , K.، نويسنده ,
Abstract :
A set of two multi-wire proportional chambers with a central hole has been designed and built in a KVI-IUCF collaboration. These chambers, used for detecting charged particles with atomic masses up to A=4 and energies up to 200 MeV, are highly efficient with efficiencies of 97–98% per plane at a count rate of 1 kHz per centimeter wire, dropping to 95–96% per plane at a count rate of 2 kHz/c wire.
