News from Louvain K. Piotrzkowski. Fast proton tracking in the LHC beamline J. de Favereau & X. Rouby Luminosity with lepton pairs Y. Liu & O. Militaru. Roman Pots. Q. D2. ~75 m. IP. ~160 m. D1. Measuring (very) forward protons.
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Fast proton tracking in the LHC beamline
J. de Favereau & X. Rouby
Luminosity with lepton pairs
Y. Liu & O. Militaru
Measuring (very) forward protons
x = x*(b/b*)sinF + qx*(bb*)cosF + DDE/E
Motivation: Provide a tool for fast event-by-event proton tracking through the LHC beam-line which could be directly implemented into Oscar/Orca (for the moment simplified model of the proton detection used); will allow for systematic studies as magnet displacement etc.
Method: describe each LHC element between IP5 and 240 (420) m as a drift space/dipole/ quadrupole by a separate transport matrix + its aperture description (check if proton’s position at the end of an element is accepted)
= 10 from beam
All in one step now, ie. only one matrix used
200 GeV photons
with Q2=2 GeV2
The software (with dummy modules ) is ready for detailed simulation – the newest settings are being implemented (v6.5) but we lack precise positions of the quadrupoles – expect to receive next week.
First results expected then in a couple of weeks. As a cross-check reproduction of design orbit and comparisons with MAD-X simulation is foreseen