HAL will be down for maintenance from Friday, June 10 at 4pm through Monday, June 13 at 9am. More information
Skip to Main content Skip to Navigation
Journal articles

Performance of the NOMAD-STAR detector

Abstract : The NOMAD-STAR detector is a silicon vertex 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 1.14m^2. About 11,500 nu_mu 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 nu_mu (nu_e)<-> nu_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 peformance achieved with it.
Document type :
Journal articles
Complete list of metadata

Contributor : Claudine Bombar Connect in order to contact the contributor
Submitted on : Friday, January 16, 2004 - 3:15:01 PM
Last modification on : Friday, November 6, 2020 - 3:30:01 AM
Long-term archiving on: : Tuesday, June 2, 2015 - 1:05:46 PM


  • HAL Id : in2p3-00020245, version 1



G. Barichello, A. Cervera-Villanueva, D C. Daniels, M. Ellis, D. Ferrere, et al.. Performance of the NOMAD-STAR detector. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Elsevier, 2003, 506, pp.217-237. ⟨in2p3-00020245⟩



Record views


Files downloads