CERN Accelerating science

All CERN Accelerators documents

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2019-01-15
17:02
International Advisory Committee Final Statement on the FCC CDRs / Dissertori, Guenther (ETH Zurich (CH))
The International Advisory Committee (IAC) for the Future Circular Collider (FCC) study has followed the activities of the FCC study group during the years 2017-2018, according to its mandate given by the FCC Steering Committee. This mandate consisted in reviewing the scientific and technical progress and considering, for each of the numerous FCC study areas, the questions related to the readiness level required for a Conceptual Design Report (CDR) were asked. [...]
CERN-ACC-2019-0008.- Geneva : CERN, 2019 Fulltext: PDF;

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2019-01-15
15:35
Report from the LHC Fixed Target working group of the CERN Physics Beyond Colliders forum / Redaelli, Stefano (CERN) ; Ferro-Luzzi, Massimiliano (CERN) ; Hadjidakis, Cynthia (Centre National de la Recherche Scientifique (FR))
Several proposals for fixed-target experiments at the LHC are being proposed and actively studied. Splitting of beam halo from the core with a bent channeling crystal has been suggested in order to perform physics experiments with an internal solid target. [...]
CERN-PBC-REPORT-2019-001.- Geneva : CERN, 2019

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2019-01-15
11:02
Injection into the 300 GeV Synchrotron from the CPS
CERN-MPS-SI-Int-300-INJ-4.
- 1970. - 29 p.
Full text

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2019-01-15
09:36
Magnetic Frequency Response of High-Luminosity Large Hadron Collider Beam Screens / Morrone, Marco (CERN, Imperial College London) ; Martino, Michele (CERN) ; De Maria, Riccardo (CERN) ; Fitterer, Miriam (FNAL) ; Garion, Cedric (CERN)
Magnetic fields used to control particle beams in accelerators are usually controlled by regulating the electrical current of the power converters. [...]
CERN-ACC-2019-0004.
- 2019. - 22 p.
Full text

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2019-01-15
06:22
Dynamic Testing and Characterization of Advanced Materials in a New Experiment at CERN HiRadMat Facility / Bertarelli, Alessandro (CERN) ; Accettura, Carlotta (CERN ; Milan Polytechnic) ; Berthomé, Emmanuel (CERN) ; Bianchi, Laura (CERN) ; Bolz, Philipp (Darmstadt, GSI) ; Carra, Federico (CERN) ; Fichera, Claudio (CERN) ; Frankl, Matthias (CERN) ; Furness, Thomas (Huddersfield U.) ; Gobbi, Giorgia (CERN) et al.
An innovative and comprehensive experiment (named “Multimat”) was successfully carried out at CERN HiRadMat facility on 18 different materials relevant for Collimators and Beam Intercepting Devices. Material samples, tested under high intensity proton pulses of 440 GeV/c, exceeding the energy density expected in HL-LHC, ranged from very light carbon foams to tungsten heavy alloys, including novel composites as graphite/carbides and metal/diamond without and with thin-film coatings. [...]
2018 - 8 p. - Published in : (2018) , pp. WEPMF071
- Published in : J. Phys. : Conf. Ser.: 1067 (2018) , no. 8, pp. 082021 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.WEPMF071

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2019-01-15
06:22
Electron Cloud Build Up for LHC Sawtooth Vacuum Chamber / Guillermo Cantón, Gerardo (CERN ; CINVESTAV, IPN) ; Maury Cuna, Georfrey (Guanajuato U.) ; Ocampo, Edgar (Guanajuato U.) ; Zimmermann, Frank (CERN)
At high proton-beam energies, beam-induced synchrotron radiation is an important source of heating, of beam-related vacuum pressure increase, and of primary photoelectrons, which can give rise to an electron cloud. For the arcs of LHC a sawtooth pattern had been imprinted on the horizontally outward side  of the vacuum chamber in order to locally absorb synchrotron radiation photons without dispersing them all around the chamber. [...]
2018 - 3 p. - Published in : 10.18429/JACoW-IPAC2018-TUPAF030 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.TUPAF030

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2019-01-15
06:22
Observation of Fast Losses in the LHC Operation in 2017 / Gorzawski, Arkadiusz (CERN ; Manchester U.) ; Appleby, Robert (Cockcroft Inst. Accel. Sci. Tech. ; U. Manchester (main)) ; Fuster-Martínez, Nuria (CERN) ; Garcia Morales, Hector (CERN) ; Redaelli, Stefano (CERN) ; Xu, Chen (CERN) ; Zamantzas, Christos (CERN)
Four diamond detectors that provide beam loss measurements with time resolution in the nanosecond range were added in the vicinity of the primary collimators of the Large Hadron Collider (LHC). This is a powerful diagnostic tool that provides the unique chance to measure bunch-by-bunch losses. [...]
2018 - 4 p. - Published in : 10.18429/JACoW-IPAC2018-TUPAF029 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.TUPAF029

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2019-01-15
06:22
Special Collimation System Configuration for the LHC High-Beta Runs / Garcia Morales, Hector (Royal Holloway, U. of London) ; Bruce, Roderik (CERN) ; Burkhardt, Helmut (CERN) ; Deile, Mario (CERN) ; Jakobsen, Sune (CERN) ; Mereghetti, Alessio (CERN) ; Redaelli, Stefano (CERN)
Special LHC high-beta optics is required for the forward physics program of TOTEM and ATLAS-ALFA. In this configuration, the beam is de-squeezed (the \beta-function at the collision point is increased) in order to minimize the divergence for measurements at very small scattering angles. [...]
2018 - 4 p. - Published in : 10.18429/JACoW-IPAC2018-MOPML012 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.MOPML012

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2019-01-15
06:22
Challenges and Status of Tuning Simulations for CLIC Traditional Beam Delivery System / Bodenstein, Ryan (JAI, UK) ; Burrows, Philip (JAI, UK) ; Marín, Eduardo (CERN)
The beam delivery system (BDS) for the 3 TeV version of the Compact Linear Collider (CLIC) has two main design types. One type is referred to as the local scheme, as it is approximately one kilometer shorter and corrects the chromaticity in both planes. [...]
2018 - 3 p. - Published in : 10.18429/JACoW-IPAC2018-MOPML010 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.MOPML010

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2019-01-15
06:22
New High Luminosity LHC Baseline and Performance at Ultimate Energy / Medina Medrano, Luis (Guanajuato U. ; CERN) ; Apollonio, Andrea (CERN) ; Arduini, Gianluigi (CERN) ; Brüning, Oliver (CERN) ; Giovannozzi, Massimo (CERN) ; Papadopoulou, Stefania (CERN) ; Papaphilippou, Yannis (CERN) ; Redaelli, Stefano (CERN) ; Tomás, Rogelio (CERN)
The LHC machine is envisioned to operate eventually at an ultimate beam energy of 7.5 TeV at the end of LHC Run 4, i.e. after commissioning of the HL-LHC systems, a stage falling into the High Luminosity LHC (HL-LHC) era [...]
2018 - 4 p. - Published in : 10.18429/JACoW-IPAC2018-MOPML009 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.MOPML009

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