1. LHCb Experimental Area Meeting 9.05.2007V. Bobillier1 Earth network in UX85 experimental cavern

2. LHCb Experimental Area Meeting 9.05.2007V. Bobillier2 Earth interconnections with 120 mm2 copper cable PZ shaft Counting house Detector area Shielding wall LHCEIE__8014

3. LHCb Experimental Area Meeting 9.05.2007V. Bobillier3 General earth network in UX85 experimental cavern can be seen on this drawing (CDD): LHCEIE__8014 Actual status: All earth interconnections on the side walls of the cavern (along the cable ducts) have been made. Connections to supporting rails of rolling bridge have been done. Connection in the counting house have already been made. Connection of metallic structure: It has been decided to connect the main parts only (example: supporting feats and beams) Earth connections on the cavern floor are partially in place. Still some cable to be installed.

4. LHCb Experimental Area Meeting 9.05.2007V. Bobillier4 Earth interconnections with 120 mm2 copper cable PZ shaft Counting house Detector area Shielding wall

5. LHCb Experimental Area Meeting 9.05.2007V. Bobillier5 Counting house Connection to the earth plate on the cavern wall PZ shaft Connection to all metallic rails in the floor when possible

6. LHCb Experimental Area Meeting 9.05.2007V. Bobillier6 Counting house Connection to the earth plate on the cavern wall PZ shaft Connection to all metallic rails in the floor when possible

7. LHCb Experimental Area Meeting 9.05.2007V. Bobillier7 Earth interconnections with 120 mm2 copper cable PZ shaft Counting house Detector area Bunker region Connection to the bunker racks earth (earth cable in the groove) Connection to the earth plate on the side wall Beam pipe axis (Connection to all metallic rails)

8. LHCb Experimental Area Meeting 9.05.2007V. Bobillier8 Earth interconnections with 120 mm2 copper cable PZ shaft Detector area Bunker region Connection to the earth plate on the side wall (Connection to all metallic rails) Connection to the bunker racks earth (earth cable in the groove) (Connection to all metallic rails)

9. LHCb Experimental Area Meeting 9.05.2007V. Bobillier9 Questions…