Requirements and Design Criteria for the LHC Collimation System

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Number of bunches: 2808 Bunch population: 1.1e11 Bunch spacing: 25 ns Top energy: 5$ (3$& Challenge: High Stored Energy 1 Proton energy: 7 TeV Transv. beam size: 0.2 mm Bunch length: 8.4 cm Stored beam energy: 350 MJ Injection: Proton energy: 450 GeV Transv. Beam size: 1 mm Bunch length: 18.6 cm Physics Potential = Energy and Luminosity: Factor 1000 in transverse energy density! Increase transverse energy density d = demagnification N p = protons per bunch f rev = revolution freq. E b = beam energy
5$ (3$& Challenge: High Stored Energy 2 If you are interested in material damage: Energy density (3 LHC bunches) = Energy density (full HERA-p beam) If your are interested in heat load: Energy (20 LHC bunches) = Energy (full HERA-p beam) If you are interested in real things: = Energy to melt 3 kg Copper Energy (2 full LHC beams) = 7% of energy stored in an airplane carrier at 30 knots K.H. Mess Picture of damaged SLC collimator
Page 1 and 2: 5$ (3$& Requirements and Design Cri
Page 3: 5$ (3$& What is collimation for the
Page 7 and 8: 5$ (3$& Challenge: Super-Conducting
Page 9 and 10: 5$ (3$& Challenge: Tight and Effici
Page 11 and 12: Equipment failures Equipment errors
Page 13 and 14: 5$ (3$& Abnormal dump actions Beam
Page 15 and 16: 5$ (3$& Contents 1) The challenge H
Page 17 and 18: 5$ (3$& Two stage collimation syste
Page 19 and 20: 5$ (3$& Secondary and tertiary beam
Page 21 and 22: 5$ (3$& Running at the quench limit
Page 23 and 24: 5$ (3$& Summary and Outlook 1 Beam
Page 25 and 26: 5$ (3$& Additional slides
Page 27 and 28: 5$ (3$& Inefficiency versus imperfe
Page 29: 5$ (3$& Multi-turn properties and i

Requirements and Design Criteria for the LHC Collimation System

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