CAPRICE 97 Drawing
The experimental goal of the CAPRICE-2 experiment is the measurement of
antiprotons, electrons and positrons from ca. 4 - 30 GeV. New detectors were
installed in 1996:
The magnet spectrometer was upgraded by installing a third driftchamber
from Siegen instead of the MWPCs used in the flights before. The MDR of the
spectrometer is now about 350 GV. That was the most powerful balloon
spectrometer until 1998. (Then ISOMAX came up
with a MDR of about 1000 GV).
The Swedish Group from Stockholm has built a new
this detector it is possible to separate antiprotons from the background of
electrons, pions and myons for energies up to 30 GeV. The first tests of this
detector were started at CERN in summer 1996. The counter worked fine
reaching a total photoelectron-number of ca. 8. The angular resolution is
around 1.4 mrad.