Future Long-Baseline Neutrino Facilities and Detectors

Figure 4

Location of LAr-FD at the 4850 L. Primary access to the upper level of the LAr-FD cavern is through a horizontal tunnel that connects to the Ross shaft. A second horizontal tunnel near the midpoint of the cavern provides secondary egress to the existing 4850 L tunnels. A decline tunnel to the lower level is used to remove waste rock during construction and serves as a secondary egress from the cryostat septum area during operations. Cavern supply air enters the cavern from the Ross shaft and exits through a new ventilation shaft that connects to the Oro Hondo.