| Feature | Number | Equivalent |
| Circumference | ~ 27 km | |
| Distance covered by beam in 10 hours | ~ 10 billion km | a round trip to Neptune |
| Number of times a single proton travels around the ring each second | 11 245 | |
| Speed of protons first entering the LHC | 299 732 500 m/s | 99.9998 % of the speed of light |
| Speed of protons when they collide | 299 789 760 m/s | 99.9999991 % of the speed of light |
| Collision temperature | ~ 1016C | over one billion times hotter than the centre of the Sun |
| Operating temperature of the superconducting magnets | 1,9 K (-271,3°C) | colder than outer
space (which is 2.7 K, or 270.5˚C) |
| Amount of helium needed to cool down the facility | ~ 120 t | |
| Number of leak-tight pipe junctions necessary to keep the helium cold | ~ 40 000 | |
| Volume of the insulating vacuum around the superconducting magnets | ~ 9 000 m3 | the volume of the nave of a cathedral |
| Pressure inside the beam vacuum pipe | ~ 10-13 atm | one tenth of the pressure at the surface of the moon |
| Electrical power consumption | ~ 120 MW | twice the power generated by the Rolls Royce 900 engine of an Airbus A380 when the plane is at cruising speed |
发表于 2010-3-31 08:39:42
发表于 2010-3-31 09:17:47
发表于 2010-3-31 19:25:12