The surface in CERN's North Area that is already renovated and going to renovated covers about 60 000 m2 above and below ground.
The underground structures connect the SPS proton beam with the experimental halls and also contain the targets, where the secondary and tertiary beams are produced. This whole complex covers 16620 m2.
Underground Structures
| Name | Type | Description | Surface (m2) |
|---|---|---|---|
|
TT20 |
tunnel | Extracted proton beam from SPS. Only the last part of it is included in the NA consolidation program. | 1869 |
| TDC2 | cavern | Extracted proton beam and splitter switchyard. | 1908 |
| TCC2 | cavern | Target zone and start of secondary (particle) beams. | 2080 |
| TT81 | tunnel | Connects TCC2 to EHN1 surface experimental hall, houses the H2 and H4 secondary beam lines. | 1241 |
| TT82 | tunnel | Connects TCC2 to EHN1 surface experimental hall, houses the H6 and H8 secondary beam lines. | 1241 |
| TT83 | tunnel | Starts from TCC2, houses the M2, P0 and P61 beam lines | 1809 |
| TDC8 | cavern | Junction cavern switch of M2 and P0 beam lines. | 567 |
| TT85 | tunnel | Starts from TDC8, houses the P0 beam line. | 454 |
| TDC85 | cavern | Junction cavern, houses the P0 beam line. It used to contain the switch to a second primary or ion beam line to the ECN3 cavern. | 861 |
| TCC8 | cavern | Target cavern for the T10 target. Contains the upstream part of the K12 beam line to ECN3 underground experimental cavern. | 1700 |
| TT84 | tunnel | Connects the TDC8 to EHN2 experimental hall. Houses the M2 beam line. | 2386 |
| TA801 | gallery | Technical gallery connecting TCC2 to BA80 | 282 |
| TA802 | gallery | Technical gallery connecting TCC2 to BA80 | 104 |
| 913 | tunnel | Access point | 59 |
| 914 | tunnel | Access point | 59 |
| Total | 16620 m2 |
Experimental Halls
| Name | Type | Description | Surface (m2) |
|---|---|---|---|
| EHN1 | surface | Experimental Hall 1 (b.887) housing the H2, H4, H6, and H8 beam lines. | 25928 |
| EHN2 | surface | Experimental Hall 2 (b.888) housing the M2 beam line. | 3267 |
| ECN3 | cavern | Underground Experimental Cavern 3 (900) housing the K12 beam line | 1887 |
| Total | 31082 m2 |
Surface Service Buildings
| Name | Type | Description | Surface (m2) |
|---|---|---|---|
| BA80 | b.889 | Access point for TCC2/TDC2 zones and location of infrastructure services (cooling, ventilation), power supplies and beam instrumentation. | 3103 |
| BA81 | b.890 | Infrastructure services (cooling, ventilation) underground tunnels downstream TCC2 and experimental halls, power supplies for secondary beams. | 3596 |
| BB81 | b.895 | Infrastructure services (cooling, cryogenics) for underground tunnels and experimental halls. Gas system distribution | 1949 |
| BG810 | b.907 | Gas building for experimental halls EHN1. | 400 |
| BA82 | b.891 | Infrastructure services (cooling, ventilation) underground tunnels downstream EHN1, power supplies for M2 and P0/K12 secondary beams. | 1074 |
| BY82 | b.883 | Infrastructure services for cooling and ventilation for EHN2. | 243 |
| BX82 | b.906 | Auxiliary building for beam instrumentation and monitoring. | 33 |
| BG82 | b.908 | Gas building for ECN3 | 46 |
| BG83 | b.920 | Gas building for EHN2 | 48 |
| BX83 | b.918 | Counting rooms for ECN3 experimental cavern. | 847 |
| PA852 | b.911 | Access point for ECN3 underground cavern | 396 |
| PP851 | b.912 | Access point for TCC8 target cavern | 165 |
| BG811 | b.909 | Gas building for EHN1 | 176 |
| BX80 | b.902 | Auxiliary building for beam instrumentation for EHN1 | 68 |
| Total | 12044 m2 |