CERN AC Note (2000-03)-General description of the CNGS Project

List of figures
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Figure 1 The standard model 5
Figure 2 Illustration of nm — nt oscillations (a pure nt beam is produced at CERN and directed towards Gran Sasso 7
Figure 3 Simplified illustration of cosmic ray interactions producing neutrinos detected at the Gran Sasso underground laboratory 8
Figure 4 View inside one of the underground halls at Gran Sasso 9
Figure 5 Route taken by neutrinos through the Earth’s crust from CERN to the Gran Sasso laboratory 10
Figure 6 CNGS set-up at CERN in map form 11
Figure 7 The production of pions and kaons (parents of the neutrinos), focussed in the direction of the Gran Sasso by two magnetic horns 14
Figure 8 The CERN proton accelerators used for the CNGS 14
Figure 9 Dipoles (red) and quadrupoles (blue) in SPS tunnel 15
Figure 10 Work-sites connected with the CNGS project 20
Figure 11 Works connected with the CNGS project: section 21
Figure 12 Underground work-sites at Point BA4 of the SPS.Tunnel TI8, under construction, will connect the SPS to the LHC 21
Figure 13 The target chamber and its annexes 22
Figure 14 The hadron stop chamber and muon detection chambers and the connecting passages to the LEP/LHC 23
Figure 15 Excavation with rotating head boring machine (roadheader) 27
Figure 16 The CNGS work-site area near SPS Access Point BA4 28
Figure 17 The TI8 tunnel work-site near the SPS/BA4 area 28
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