Next: Conclusion Up: No Title Previous: Silicon Readout Chip
Next: Conclusion
Up: No
Title Previous: Silicon
Readout Chip
The different conditions in the Gran Sasso beam line compared to the WANF influence the sensitivity of TOSCA in terms of oscillation parameters. Table 4 shows all relevant parameters necessary for such a comparison.
Table 4: Comparison of beam line parameters
The numbers for the column ``Upgraded WANF'' have been derived from
applying to the WANF the super-cycle shown in Figure 2,
but with a FS replacing the FE. Therefore an additional 
protons per super-cycle can be sent to the neutrino target during the same
cycle as the SE. Moreover, table 4
assumes a global efficiency of 50% rather than the 75% quoted in [1].
The annual proton yield in the NGS will be smaller than the one in the
upgraded WANF assuming the same efficiencies for both beams. The neutrino
interaction rate per proton will be smaller as a consequence of the larger
distance between proton target and detector. For a detector setup as described
in SPSC/I213 and a data taking period of 3 years, one expects 67% of 
charge current events in the NGS compared to the WANF
.
Using the tau sensitivity and background estimation of SPSC/I213, a sensitivity
in mixing angle for large 
of 
is expected (to be compared with 
for the upgraded WANF).
For small
the sensitivity improves due to the two times larger average flight length
of the neutrinos. The minimal reachable
improves from 
to 
.
The sensitivity ranges for TOSCA at the WANF and at NGS are illustrated in Figure 9. The present limits and the expected final results from CHORUS and NOMAD are shown as well.
Figure 9: TOSCA sensitivity for WANF and NGS