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2019-03-21
12:05
MD4036: New ADT signal processing for large tune acceptance / Komppula, Jani Paavo Olavi ; Buffat, Xavier (CERN) ; Kotzian, Gerd (CERN) ; Li, Kevin Shing Bruce (CERN) ; Valuch, Daniel (CERN)
Transverse feedback system (ADT) performance can be optimized with digital FIR filters [...]
CERN-ACC-NOTE-2019-0008. - 2019. - 20 p.

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2019-03-20
21:11
Operation and Conguration of the LHC in Run 2 / Wenninger, Jorg (CERN)
Between 2015 and 2018 the LHC was operated with protons at beam energies of 6.5 TeV with an integrated production of 160 fb-1 both ATLAS and CMS in proton operation. [...]
CERN-ACC-NOTE-2019-0007. - 2019.

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2019-03-19
14:56
K-Modulation Software Development and Automation / Spitznagel, Martin Lukas
The k-modulation turned out to be the fastest and most precise tool to get a precise determination of the beam size directly at interaction points (IP) of the Large Hadron Collider (LHC) [...]
CERN-THESIS-2019-013 - 80 p.

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2019-03-19
06:54
Alignment and Monitoring Systems for Accelerators and Experiments Based on BCAM - First Results and Benefits of Systems Developed for ATLAS, LHCb and HIE-ISOLDE / Gayde, Jean-Christophe (CERN) ; Blanc, Frederic (Ecole Polytechnique, Lausanne) ; Di Girolamo, Beniamino (CERN) ; Kadi, Yacine (CERN) ; Kautzmann, Guillaume (CERN) ; Klumb, Francis (CERN) ; Lindner, Rolf (CERN) ; Mergelkuhl, Dirk (CERN) ; Pontecorvo, Ludovico (CERN) ; Raymond, Michel (CERN) et al.
In the last few years alignment and monitoring systems based on BCAM* cameras active sensors, or their HBCAM evolution, have been developed at the request of the Technical Coordination of LHC experiments and HIE-ISOLDE facility Project Leader. ADEPO (ATLAS DEtector POsition) has been designed to speed up the precise closure - 0.3 mm - of large detector parts representing in total ~2500 tons. [...]
2018 - 3 p. - Published in : 10.18429/JACoW-IPAC2018-WEPAF067 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.WEPAF067

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2019-03-08
10:54
Anomaly Detection for the CERN Large Hadron Collider injection magnets / Halilovic, Armin
The Large Hadron Collider is the world’s largest single machine and the most powerful particle accelerator ever built [...]
CERN-THESIS-2018-372 - 89 p.

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2019-03-07
11:49
A novel approach to Landau damping of transverse collective instabilities in future hadron colliders / Schenk, Michael
Transverse collective instabilities induced by the beam-coupling impedance of the accelerator structure lead to beam quality degradation and pose a major limitation to the machine performance [...]
CERN-THESIS-2019-008 - 184 p.

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2019-03-07
06:55
First Studies of Ion Collimation for the LHC Using BDSIM / Abramov, Andrey (JAI, UK ; Royal Holloway, U. of London) ; Boogert, Stewart (JAI, UK ; Royal Holloway, U. of London) ; Nevay, Laurence (JAI, UK ; Royal Holloway, U. of London) ; Walker, Stuart (JAI, UK ; Royal Holloway, U. of London)
At the Large Hadron Collider (LHC) at CERN ion physics runs are performed in addition to proton physics runs. In ion operation the cleaning efficiency of the collimation system is lower than in the case of protons and the ion showering process is more complicated and produces a larger variety of secondary particles. [...]
2018 - 4 p. - Published in : 10.18429/JACoW-IPAC2018-MOPMF090 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.MOPMF090

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2019-02-26
08:29
Construction of a Mobile Irradiation Instrument for the Verification of the CERN LHC Beam Loss Monitoring System / Gudkov, Dmitry (CERN) ; Grishin, Viatcheslav (CERN) ; Veness, Raymond (CERN) ; Zamantzas, Christos (CERN)
The strategy for machine protection and quench prevention of the super-conducting elements of the Large Hadron Collider (LHC) at the European Organisation for Nuclear Research (CERN) is heavily reliant on its beam loss monitoring system. This is one of the most complex and large-scale beam instrumentation systems deployed anywhere in the world. [...]
2018 - 4 p. - Published in : 10.18429/JACoW-IBIC2017-WEPWC02 Fulltext: PDF;
In : 6th International Beam Instrumentation Conference, Grand Rapids, MI, USA, 20 -24 Aug 2017, pp.WEPWC02

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2019-02-26
08:29
Development of a Fluorescence Based Gas Sheet Profile Monitor for Use With Electron Lenses: Optical System Design and Preparatory Experiments / Udrea, Serban (Darmstadt, GSI) ; Barrios Diaz, Elena (CERN) ; Chritin, Nicolas (CERN) ; Forck, Peter (Darmstadt, GSI) ; Jones, Owain Rhodri (CERN) ; Magagnin, Paolo (CERN) ; Schneider, Gerhard (CERN) ; Tzoganis, Vasilis (Cockcroft Inst. Accel. Sci. Tech.) ; Veness, Raymond (CERN) ; Welsch, Carsten (Cockcroft Inst. Accel. Sci. Tech.) et al.
A hollow electron lens is presently under study as a possible addition to the collimation system for the high luminosity upgrade of the LHC (HL-LHC), while an electron lens system is also proposed for space charge compensation in the SIS-18 synchrotron for the high intensities at the future FAIR facility. For effective operation, a precise alignment is necessary between the high energy hadron beam and the low energy electron beam. [...]
2018 - 5 p. - Published in : 10.18429/JACoW-IBIC2017-WEPCC08 Fulltext: PDF;
In : 6th International Beam Instrumentation Conference, Grand Rapids, MI, USA, 20 -24 Aug 2017, pp.WEPCC08

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2019-02-21
06:42
Performance Assessment of Pre-Series Fast Beam Wire Scanner Prototypes for the Upgrade of the CERN LHC Injector Complex / Sirvent, Jose (CERN) ; Andersson, Patrik (CERN) ; Andreazza, William (CERN) ; Dehning, Bernd (CERN) ; Emery, Jonathan (CERN) ; Garcia, Lionel (CERN) ; Gudkov, Dmitry (CERN) ; Roncarolo, Federico (CERN) ; Tassan-Viol, Jean (CERN) ; Trad, Georges (CERN) et al.
A new generation of beam wire scanner (BWS), for transversal beam profile monitoring, is under development on the framework of the LHC Injector Upgrade project at CERN. Two pre-series prototypes have been built and installed in the Super Proton Synchrotron and Proton Synchrotron Booster, to assess the performance of the upgraded BWS concept. [...]
2018 - 4 p. - Published in : 10.18429/JACoW-IBIC2017-WEPCC03 Fulltext: PDF;
In : 6th International Beam Instrumentation Conference, Grand Rapids, MI, USA, 20 -24 Aug 2017, pp.WEPCC03

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