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1.
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Run 2 Collimation Overview
/ Fuster Martinez, N. (CERN) ; Abramov, A (CERN ; Royal Holloway, U. of London) ; Azzopardi, G (CERN ; Malta U.) ; Belli, E (CERN) ; Boscolo-Meneguolo, C (CERN) ; Bruce, R (CERN) ; D' Andrea, M. (CERN ; Padua U.) ; Di Castro, M. (CERN) ; Fiascari, M (CERN) ; Fomin, A (CERN ; Kharkov, KIPT) et al.
The LHC collimation system is designed to provide protection against regular and abnormal losses in order to reduce the risk of quenches of the superconducting magnets as well as the background in the experiments. All Run 2 proton and ion runs were successfully completed with no magnet quenches from slow losses of the circulating beam. [...]
2019 - 16 p.
- Published in : , pp. 149-164
Fulltext: PDF;
In : 9th LHC Operations Evian Workshop, Evian Les Bains, France, 30 Jan - 1 Feb 2019, pp.149-164
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2.
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ebook
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3.
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BDSIM: Automatic Geant4 Models of Accelerators
/ Nevay, L.J. (JAI, UK) ; Abramov, A. (JAI, UK) ; Boogert, S.T. (JAI, UK) ; Deacon, L.C. (U. Coll. London) ; Garcia-Morales, H. (JAI, UK) ; Gibson, S.M. (JAI, UK) ; Kwee-Hinzmann, R. (JAI, UK) ; Shields, W. (JAI, UK) ; Snuverink, J. (JAI, UK) ; Walker, S. (JAI, UK)
BDSIM is a program that uses a suite of high energy physics software including Geant4, CLHEP & ROOT, to seamlessly track particles through a 3- dimensional accelerator model utilising the full range of particles and physics processes from Geant4. BDSIM was originally developed to simulate linear colliders such as the International Linear Collider (ILC), but has more recently been extended for application to the Large Hadron Collider (LHC), and generally to storage rings. [...]
2018 - 11 p.
- Published in : 10.23732/CYRCP-2018-002.45
Fulltext: PDF;
In : ICFA Mini-Workshop on Tracking for Collimation in Particle Accelerators, pp.45
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4.
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Status of SixTrack with collimation
/ Bruce, R. (CERN) ; Fiascaris, M. (CERN) ; Fitterer, M. (FNAL, Batavia) ; Morales, H. Garcia (Royal Holloway, U. of London) ; Hermes, P.D. (CERN) ; Kwee-Hinzmann, R. (Royal Holloway, U. of London) ; Mereghetti, A. (CERN) ; Mirarchi, D. (CERN) ; Molson, J. (Orsay, LAL) ; Quaranta, E. (CERN) et al.
In this paper, we review the functionality and status of the collimation version of SixTrack. It is a simulation tool that contains both an accurate magnetic tracking of an ensemble of particles, as well as a model for particle-matter interaction inside collimators, in order to model the efficiency of a proton collimation system. [...]
2018 - 10 p.
- Published in : 10.23732/CYRCP-2018-002.1
Fulltext: PDF;
In : ICFA Mini-Workshop on Tracking for Collimation in Particle Accelerators, pp.1
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5.
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Collimation-induced experimental background studies at the CERN Large Hadron Collider
/ Bruce, R (CERN) ; Huhtinen, M (CERN) ; Manousos, A (CERN ; Innsbruck U. ; Aristotle U., Thessaloniki) ; Cerutti, F (CERN) ; Esposito, L (CERN) ; Kwee-Hinzmann, R (Royal Holloway, U. of London) ; Lechner, A (CERN) ; Mereghetti, A (CERN) ; Mirarchi, D (CERN) ; Redaelli, S (CERN) et al.
The data produced at the particle physics experiments at the Large Hadron Collider (LHC) contain not only the signals from the collisions, but also a background component from proton losses around the accelerator. Understanding, identifying and possibly mitigating this machine-induced background is essential for an efficient data taking, especially for some new physics searches. [...]
2019 - 18 p.
- Published in : Phys. Rev. Accel. Beams 22 (2019) 021004
Fulltext from Publisher: PDF;
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6.
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7.
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Performance of the LHC collimation system during 2015
/ Valentino, G (CERN) ; Bruce, R (CERN) ; Fiascaris, M (CERN) ; Garcia, H (CERN) ; Hermes, P (CERN) ; Kwee, R (CERN) ; Mereghetti, A (CERN) ; Mirarchi, D (CERN) ; Quaranta, E (CERN) ; Redaelli, S (CERN) et al.
During the long shutdown, a total of 32 collimators were replaced or installed
to improve the Run 1 system, including 18 new collimators with embedded beam
position monitors , additional physics debris collimators, additional passive
absorbers and the re-installation or displacement of existing collimators. The
commissioning experience as well as the performance of the collimation system in
2015 is reviewed following these upgrades. [...]
Geneva : CERN, 2016 - 6 p.
- Published in : (2016) , pp. 149-154
Fulltext: PDF;
In : 6th Evian Workshop on LHC beam operation, Evian Les Bains, France, 15 - 17 Dec 2015, pp.149-154
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8.
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Collimation: experience and performance
/ Mirarchi, D (CERN) ; Bruce, R (CERN) ; Fiascaris, M (CERN) ; Hermes, P (CERN) ; Mereghetti, A (CERN) ; Quaranta, E (CERN) ; Redaelli, S (CERN) ; Rossi, R (CERN) ; Salvachua, B (CERN) ; Valentino, G (CERN) et al.
The main task of the LHC collimation system is to ensure safe and efficient operation, acting as first element of machine protection and minimizing the risk of magnet quenches induced by beam loss. The year 2016 has been very successful in terms of achieved LHC performance, thanks also to the reliability of its collimation system. [...]
Geneva : CERN, 2017 - 8 p.
- Published in : (2017) , pp. 105-112
Fulltext: PDF;
In : 7th Evian Workshop on LHC beam operation, Evian Les Bains, France, 13 - 15 Dec 2016, pp.105-112
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9.
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Machine-induced Background Simulation Studies for LHC Run 1, Run 2 and HL-LHC
/ Kwee-Hinzmann, Regina (Royal Holloway. University of London) ; Bregliozzi, Giuseppe (CERN) ; Bruce, Roderik (CERN) ; Cerutti, Francesco (CERN) ; Esposito, Luigi Salvatore (A.D.A.M. Applications of Detectors and accelerators to Medicine (CH)) ; Gibson, Stephen (University of London (GB)) ; Lechner, Anton (CERN) ; Garcia Morales, Hector (University of London (GB)) ; Yin Vallgren, Christina (CERN)
The study of machine-induced background to the experiments is vital for several reasons. [...]
CERN-ACC-2017-0025.
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2017. - 96 p.
Full text
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10.
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The ATLAS Data Acquisition and High Level Trigger system
/ Abolins, M (Michigan State U.) ; Abreu, R (CERN) ; Achenbach, R (Kirchhoff Inst. Phys.) ; Aharrouche, M (Mainz U., Inst. Phys.) ; Aielli, G (INFN, Rome ; Rome U., Tor Vergata) ; Al-Shabibi, A (CERN) ; Aleksandrov, I (Dubna, JINR) ; Alexandrov, E (Dubna, JINR) ; Allbrooke, B M (Birmingham U.) ; Aloisio, A (INFN, Naples ; Naples U.) et al.
/ATLAS TDAQ
This paper describes the data acquisition and high level trigger system of the ATLAS experiment at the Large Hadron Collider at CERN, as deployed during Run 1. Data flow as well as control, configuration and monitoring aspects are addressed. [...]
2016 - 153 p.
- Published in : JINST 11 (2016) P06008
IOP Open Access article: PDF;
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