CHORUS

Collaboration:

- INFN Sections and Universities: Bari,Cagliari,Ferrara,Napoli,Roma,Salerno
- Belgium,Germany,Japan,Turkey Universities

Laboratory/Beam: Wbb neutrino beam at the CERN SPS

National Responsible: U. Dore (Roma1)

Home page of the experiment: http://choruswww.cern.ch/

1. Goal of the experiment

The main goal of The CHORUS experiment is the detection of possible Oscillation of muon neutrinos to tau neutrinos via the detection of neutrino tau interactions.

Chorus is an appearance experiment based on the direct observation of tau decays in nuclear emulsions.

2.

Activities during the year 2001

The phase 2 of the experiment has started. This phase is based on the complete study of the interaction region. This allows a better efficiency in the detection of tau neutrino interactions.

the sensitivity on oscillation study has been improved.

Results on charmed particles physics have been presented in Conferences and papers are in preparation.

All the planned milestones for the year 2001 have been fulfilled.

Milestones 2002

Completion of measurements in Emulsion laboratories | 31-12-2002
New results on the limits on neutrino oscillations; New results on charm physics | 31-12-2002

3. INFN contribution to the experiment in terms of manpower and financial support

Manpower: INFN contributes with 6 Sections: 33 researchers (11.3 FTE)

Budget for the Year 2002: 113 kEuro

4. Publications in refereed journals (Year 2001): 3

5. Conference talks (Year 2001): 3

6. Number of undergraduate and doctoral theses on the experiment:

- 3 dottorato theses
- 5 laurea theses

8. Innovative Instruments:

Development of authomatic systems for emulsion measurements

9. Competing experiments:

NOMAD experiment (completed) same physics goal as CHORUS at the same beam but with a different technique.

10. International committees which have reviewed the experiment:

SPSC committee at CERN.