Current status of the CHORUS experiment at CERN

Current status of the CHORUS experiment at CERN is presented with an emphasis on technical aspects. This experiment is aimed to search for nu /sub mu / to nu /sub tau / oscillation with a designed sensitivity of sin/sup 2/(2 theta )~2*10/sup -4/ at large delta m/sup 2/. Accumulation of neutrino interactions in the emulsion target with a data taking of electronic counters were performed from 1994 to 1997 at the CERN neutrino beam. Reading out track informations recorded in the emulsion target is then started using the Track Selector (a dedicated system which automatically reads out tracks recorded in emulsion). Successful development of the Track Selector enabled this experiment end opened a possibility for future experiments. (4 refs).