Naslov
Performance of the NOMAD-STAR detector

Autori
Barichello, G. ; Cervera-Villanueva, A. ; Daniels, D.C. ; do Couto e Silva, E. ; Ellis, M. ; Ferrere, D. ; Gomez-Cadenas, J.J. ; Goessling, C. ; Gouanere, M. ; Hernando, J.A. ; Huta, W. ; Kokkonen, J. ; Kuznetsov, V.E. ; Linssen, L. ; Lisowski, B. ; Long, J. ; Lupi, A. ; Runolfsson, Oe. ; Schmidt, B. ; Soler, F.J.P. ; Steele, D. ; Stipčević, Mario ; Vidal-Sitjes, G. ; Veltri, M.

Izvornik
Nuclear Instruments and Methods in Physics Research Section A (0168-9002) 506 (2003); 217-237

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
neutrino physics; silicon microstrip detectors

Sažetak
The NOMAD-STAR detector is a silicon vertex detector installed in the NOMAD spectrometer at the CERN SPS neutrino beam. It consists of four layers of a passive boron carbide target with a total mass of 45 kg and five layers of 600 single-sided silicon microstrip detectors covering a total area of 1.14 m^2. About 11, 500 ni miu charged current interactions were reconstructed in the fiducial volume of NOMAD-STAR from the neutrino run in 1998. The potential use of silicon detectors for ni miu (ni_e)<-> ni tau oscillations depends on the observation of the tau candidates by the experimental signature of a large impact parameter, in the case of the one prong decay of the tau, or a double vertex, in the case of the three prong decay. The main aim of NOMAD-STAR is to measure the impact parameter and vertex distributions of charged current interactions, which constitute the main backgrounds for the oscillation signals, to understand the significance of a potential signal in a future experiment. The present paper describes the experience gained in the operation of this silicon vertex detector, and the performance achieved with it.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA