CERN Accelerating science

All CERN Accelerators documents

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2018-10-16
14:54
Feasibility study of a system for measuring the LHC dipole coil stresses with capacitive probes / Gilquin, J (CERN)
CERN-AT-MA-Internal-Note-93-90 ; CERN-AT-93-90-MA ; CERN-AT-MA-93-90.
- 1993. - 16 p.
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2018-10-16
12:57
Initial Study of the Reconstruction of Boosted B-hadrons and $\tau$-leptons at FCC-hh / Perez Codina, Estel ; Roloff, Philipp Gerhard (CERN)
The FCC-hh project aims at studying proton-proton collisions at $\sqrt{s}=100$ TeV. In beyond the Standard Model scenarios, such high collision energy can produce unprecedented high-energy objects in the multi-TeV range. [...]
Geneva : CERN, 2018 Access to fulltext document: PDF;

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2018-10-16
12:14
Beam Dynamics Studies for a Fast Dump System employing a Fixed Absorber Block in the CERN PS / Arrutia Sota, Pablo Andreas
Mechanical internal dumps are used at the Proton Synchrotron (PS) to dispose of the circulating beam. [...]
CERN-ACC-NOTE-2018-0068.
- 2018. - 25 p.
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2018-10-16
06:47
ICED—Inductively Coupled Energy Dissipater for Future High-Field Accelerator Magnets / Murtomäki, Jaakko Samuel (CERN) ; van Nugteren, Jeroen (CERN) ; Kirby, Glyn (CERN) ; de Rijk, Gijs (CERN) ; Rossi, Lucio (CERN) ; Stenvall, Antti (Tampere U. of Tech.)
Future high-field accelerator magnets, like the ones foreseen in the design study of the FCC project and for the EuCARD2 “Future Magnets” program, operate with magnetic fields in the range of 16-20 T. For such magnets the energy density is higher than in the accelerator magnets at present in operation, posing a challenge for the quench protection. [...]
2018 - 15 p. - Published in : IEEE Trans. Appl. Supercond. 28 (2018) 4009015

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2018-10-16
06:47
Fabrication and Assembly Performance of the First 4.2 m MQXFA Magnet and Mechanical Model for the Hi-Lumi LHC Upgrade / Cheng, Daniel W (LBNL, Berkeley) ; Ambrosio, Giorgio (Fermilab) ; Anderssen, Eric C (LBNL, Berkeley) ; Bourcey, Nicolas (CERN) ; Felice, Helene (Saclay) ; Ferracin, Paolo (CERN) ; Grosclaude, Philippe (CERN) ; Guinchard, Michael (CERN) ; Perez, Juan Carlos (CERN) ; Pan, Heng (LBNL, Berkeley) et al.
The LHC accelerator research program (LARP), in collaboration with CERN and under the scope of the high luminosity upgrade of the Large Hadron Collider, is in the prototyping stage in the development of a 150 mm aperture high-field Nb$_3$Sn quadrupole magnet called MQXF. This magnet is mechanically supported using a shell-based support structure, which has been extensively demonstrated on several R&D; models within LARP, as well as in the more recent short (1.2 m magnetic length) MQXF model program. [...]
FERMILAB-PUB-17-372-TD.- 2018 - 7 p. - Published in : IEEE Trans. Appl. Supercond. 28 (2018) 4006207 Fulltext: PDF; External link: FERMILABPUB

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2018-10-16
06:47
Marx Generator Prototype for Kicker Magnets Based on SiC MOSFETs / Redondo, L M (Lisbon, ISEL) ; Kandratsyeu, A (Energypulse Systems, Lisbon) ; Barnes, M J (CERN)
This paper describes the design strategy for a new Marx generator, based on SiC metal-oxide-semiconductor field-effect transistors (MOSFETs), proposed for Kicker magnet applications. [...]
2018. - 6 p.

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2018-10-16
06:47
Examining mitigation schemes for synchrotron radiation in high-energy hadron colliders / Guillermo, G (Merida, IPN ; CERN) ; Sagan, D (Cornell U., CLASSE) ; Zimmermann, F (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. We use the synrad3d code developed at Cornell to simulate the photon distributions in the arcs of several existing, planned, or proposed highest-energy hadron colliders to analyze the efficiency of several techniques developed, or proposed, to mitigate the negative effects of synchrotron radiation, such as a sawtooth surface and slots in the beam screen..
2018 - 7 p. - Published in : Phys. Rev. Accel. Beams 21 (2018) 021001 Fulltext: PDF;

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2018-10-16
06:47
Final focus system tuning studies towards Compact Linear Collider feasibility / Marin, E (CERN) ; Latina, A (CERN) ; Tomás, R (CERN) ; Schulte, D (CERN)
In this paper we present the latest results regarding the tuning study of the baseline design of the final focus system of the Compact Linear Collider (CLIC-FFS). CLIC aims to provide collisions to the experiments at a luminosity above $10^{34}  \text{cm}^{-2} \text{s}^{-1}$. [...]
2018 - 6 p. - Published in : Phys. Rev. Accel. Beams 21 (2018) 011003 Fulltext: PDF;

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2018-10-16
06:47
Comprehensive study of beam focusing by crystal devices / Scandale, W (CERN) ; Arduini, G (CERN) ; Cerutti, F (CERN) ; Garattini, M (CERN) ; Gilardoni, S (CERN) ; Masi, A (CERN) ; Mirarchi, D (CERN) ; Montesano, S (CERN) ; Petrucci, S (CERN) ; Redaelli, S (CERN) et al.
This paper is devoted to an experimental study of focusing and defocusing positively charged particle beams with the help of specially bent single crystals. Four crystals have been fabricated for this purpose. [...]
2018 - 11 p. - Published in : Phys. Rev. Accel. Beams 21 (2018) 014702 Fulltext: PDF;

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2018-10-16
06:47
Quadrupole-free detector optics design for the Compact Linear Collider final focus system at 3 TeV / Plassard, Fabien (CERN) ; Latina, Andrea (CERN) ; Marin, Eduardo (CERN) ; Tomás, Rogelio (CERN) ; Bambade, Philip (Orsay, LAL)
Aiming to simplify the machine detector interface of the Compact Linear Collider (CLIC), a new detector model has been designed allowing the last quadrupole QD0 of the final focus system (FFS) to be located outside of the experiment with a distance L* from the interaction point of 6 m. In this paper, the beam delivery system (BDS) has been reoptimized, offering a luminosity performance that exceeds the design requirements by 11% for the total luminosity and by 7% in the energy peak. [...]
2018 - 13 p. - Published in : Phys. Rev. Accel. Beams 21 (2018) 011002 Fulltext: PDF;

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