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Full Record Details
Persistent URL
http://purl.org/net/epubs/work/12190360
Record Status
Checked
Record Id
12190360
Title
Hi-Lumi LHC Collimation Studies with MERLIN Code
Contributors
R Appleby (UMAN, Manchester)
,
M Serluca (UMAN, Manchester)
,
J Molson (UMAN, Manchester)
,
RJ Barlow (Huddersfield U.)
,
H Rafique (Huddersfield U.)
,
A Toader (Huddersfield U.)
Abstract
The collimation system is key to the successful operation of the LHC. Measurements and simulations of the previous run at 4 TeV have shown that the system is ready for the next step, running at 7 TeV, but at the same time some sensitive cleaning locations have been identified. In particular the dispersion suppressors downstream of the betatron cleaning region in IR7 are sensitive to single diffractive scattered protons from the collimator jaws. These particles can lead to magnet quenching. The MERLIN C++ library has been developed to exploit the functionality of an object oriented code, with improved collective effects and scattering routines. New single diffractive and elastic scattering routines, based on a fit of existing experimental data with the Regge theory of soft interactions of high energy scattering, is implemented in MERLIN. In this paper we present the impact of the new single diffractive scattering physics on the cleaning inefficiency of the LHC collimation system for the Achromatic Telescope Squeezing (ATS) PreSqueeze optics scheme, for the HL-LHC project. The results are compared with the same loss map calculated using a SixTrack+K2 like scattering routine.
Organisation
CI
,
STFC
Keywords
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Language
English (EN)
Type
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Year
Paper In Conference Proceedings
In 5th International Particle Accelerator Conference (IPAC14), Dresden, Germany, 15-20th June, 2014, (2014).
http://jacow.org/…/papers/mopri077.pdf
2014
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