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| Deletions are marked like this. | Additions are marked like this. |
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| * 27 km long and 3.8 m wide tunnel about 100 m underground, 4.3 km radius | * 26659 m circumference and 3.8 m wide tunnel about 100 m underground, 4243 m radius |
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| * The following numbers are inconsistent * 1e11 protons per bunch * two beams consists of 2800 discrete bunches, one every seven meters * After 20 minutes, they reach their final energy, while doing 11 245 circuits of the LHC ring per second. * 3e14 protons per beam |
* 1.1e11 protons per bunch * each beam consists of 2808 discrete bunches, seven meters between bunches * After 20 minutes, they reach their final energy, while doing 11 245 circuits of the LHC ring per second. * 3e14 protons per beam |
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| * 1232 dipole magnets, 16 m long, 35 mt, 8.33 tesla maximum * -271.3°C (1.9K) * niobium/titanium |
* 9300 magnets, 1232 dipoles, 16 m long, 35 mt, 8.33 tesla maximum, 11700 A * -271.3°C (1.9K), superfluid helium has very high thermal conductivity * 96 tonnes of helium, 8 refrigerators at 18kW at 4.5K ? * 120 MW * niobium/titanium superconductors * CMS magnet system contains 10,000 tonnes of iron |
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| * '''CMS''' | * '''CMS''' Compact Muon Solenoid also '''TOTEM''' Total elastic and diffractive cross section measurement |
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| * '''LHCb''' * '''ATLAS''' * '''ALICE''' |
* '''LHCb''' LHC beauty experiment * '''ATLAS''' also '''LHCf''' LHC forward * '''ALICE''' A Large Ion Collider Experiment |
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| * 315 MJ in two beams | * 350 MJ in each beam, 400 tonne TGV travelling at 200 km/h is 620 MJ Magnet energy is 11 GJ |
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| * bunches squeezed by special magnets to 16 µm diameter and 80 mm length | * normally a millimeter in diameter, bunches squeezed by special magnets to 16 µm diameter and 80 mm length at collision points * 150 million sensors, 40 Ms/s * 31.6 MHz bunch crossing rate, with gaps allowing for kicker magnet response time to dump beam * a beam might circulate for 10 hours, 10.8 billion kilometers, Neptune and back |
LHC
- 26659 m circumference and 3.8 m wide tunnel about 100 m underground, 4243 m radius
- Beam tube 6.3 cm diameter (2.5 inch is 6.35 cm)
- 1e-13 bar
- 3e14 protons in two beams
- Acceleration cavity 5 MV/m
- 1.1e11 protons per bunch
- each beam consists of 2808 discrete bunches, seven meters between bunches
- After 20 minutes, they reach their final energy, while doing 11 245 circuits of the LHC ring per second.
- 3e14 protons per beam
- 0.999999991 c
- 7 TeV
- 9300 magnets, 1232 dipoles, 16 m long, 35 mt, 8.33 tesla maximum, 11700 A
- -271.3°C (1.9K), superfluid helium has very high thermal conductivity
- 96 tonnes of helium, 8 refrigerators at 18kW at 4.5K ?
- 120 MW
- niobium/titanium superconductors
- CMS magnet system contains 10,000 tonnes of iron
- 4 crossing points (8 possible?)
CMS Compact Muon Solenoid also TOTEM Total elastic and diffractive cross section measurement
- beam dump
.
LHCb LHC beauty experiment
ATLAS also LHCf LHC forward
ALICE A Large Ion Collider Experiment
.
.
- 20 particle collisions occur per bunch crossing
- 600M collisions/s = 20 x 2800 bunches x 11 245 turns per second at each crossing
- 4 crossings, 2.4 billion collisions per second
- 100 KJ/bunch
- 350 MJ in each beam, 400 tonne TGV travelling at 200 km/h is 620 MJ Magnet energy is 11 GJ
- Freight train: class 4, 97 km/h (27 m/s), 3000 to 8000 to 13000 tons? 5000 tonnes at 25 m/s is 156 GJ
- normally a millimeter in diameter, bunches squeezed by special magnets to 16 µm diameter and 80 mm length at collision points
- 150 million sensors, 40 Ms/s
- 31.6 MHz bunch crossing rate, with gaps allowing for kicker magnet response time to dump beam
- a beam might circulate for 10 hours, 10.8 billion kilometers, Neptune and back
- 15 petabytes annually