The data acquisition system of the CHORUS experiment

In the years 1994-1998 the CHORUS Collaboration has recorded data in the CERN WA95 experiment. Here we describe the data acquisition system that has been used, featuring concurrent hierarchical state machines, a remote operating system, a buffer manager, a dispatcher, a control panel and a supervisor

The CHORUS experiment

The Chorus experiment, which aims at a search for v(mu) --> v(tau) oscillations using the neutrino beam of the CERN-SPS, has successfully taken data in 1994 and 1995. The detection technique will be discussed and the performances of the apparatus as well as a status report will be given

The CHORUS experiment

The Chorus experiment, which aims at a search for v(mu) --> v(tau) oscillations using the neutrino beam of the CERN-SPS, has successfully taken data in 1994 and 1995. The detection technique will be discussed and the performances of the apparatus as well as a status report will be given

New results from a search for νμ→ντ\nu_{\mu} \to \nu_{\tau} and νe→ντ\nu_{e} \to \nu_{\tau} oscillation

A first analysis of the complete set of data collected by CHORUS in the years 1994-1997 is presented. The search for \nut charged current events has been performed for both leptonic and hadronic decays of the \tauu lepton. No \tauu candidate has been found. A \numtonut mixing is excluded down to $\sin2t$ = $6.8 \times 10^{-4}$ for large \dm2 (90\%~C.L.)