CERN Accelerating science

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2019-06-14
16:26
Consolidation des systèmes de déclenchement des thyratrons pour les aimants a impulsions rapides du complexe PS / Royer, Cyril (Inst. Nat. des Sciences Appliquees (FR)) ; Etienne, CARLIER (dir.) (CERN) ; Pieter, VAN TRAPPEN (dir.) (CERN) ; Lorane, ALLONNEAU (dir.) (CERN)
Ce document synthétise le travail réalisé au CERN dans le cadre de mon stage de fin d’études INSA. Au CERN, l’outil principal permettant d’étudier la composition de la matière (au sens large) est l’accélérateur de particules. [...]
CERN-THESIS-2019-060.- 63 p. Fulltext: PDF; External link: Approve this document (restricted)

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2019-06-12
12:12
应对即将到来的数据挑战 路线白皮书 / Kong, Albert (University of Adelaide (AU))
Particle physics has an ambitious exp erimental programme for the coming decades. The programme supp orts the strategic goals of the particle physics community that have b een laid out by the Europ ean Strategy for Particle Physics [1] and by the Particle Physics Project Prioritization Panel (P5) [2] in the United States [3] [...]
Geneva : CERN, 2019 Access to fulltext document: PDF;

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2019-06-12
06:17
Sub-Femtosecond Time-Resolved Measurements Based on a Variable Polarization X-Band Transverse Deflecting Structures for SwissFEL / Craievich, Paolo (PSI, Villigen) ; Aßmann, Ralph (DESY) ; Bopp, Markus (PSI, Villigen) ; Braun, Hans-Heinrich (PSI, Villigen) ; Catalán Lasheras, Nuria (CERN) ; Christie, Florian (DESY) ; D'Arcy, Richard (DESY) ; Ganter, Romain (PSI, Villigen) ; Grudiev, Alexej (CERN) ; Marchetti, Barbara (DESY) et al.
The SwissFEL project, under commissioning at the Paul Scherrer Institut (PSI), will produce FEL radiation for soft and hard X-rays with pulse durations ranging from a few to several tens of femtoseconds. A collaboration between DESY, PSI and CERN has been established with the aim of developing and building an advanced X-Band transverse deflector structure (TDS) with the new feature of providing variable polarization of the deflecting force. [...]
2018 - 4 p. - Published in : 10.18429/JACoW-FEL2017-WEP040 Fulltext: PDF;
In : 38th International Free Electron Laser Conference, Santa Fe, New Mexico, USA, 20 - 25 Aug 2017, pp.WEP040

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2019-06-12
06:17
Redesign of CERN's Quadrupole Resonator for Testing of Superconducting Samples / del Pozo Romano, Veronica (CERN) ; Betemps, Robin (CERN) ; Gerigk, Frank (CERN) ; Illan Fiastre, Ricardo (CERN) ; Mikkola, Tommi (CERN)
The Quadrupole Resonator (QPR) was constructed in 1997 to measure the surface resistance of niobium samples at 400 MHz, the technology and RF frequency chosen for the LHC. It allows measurement of the RF properties of superconducting films deposited on disk-shaped metallic substrates. [...]
2018 - 3 p. - Published in : 10.18429/JACoW-SRF2017-TUPB016 Fulltext: PDF;
In : 18th International Conference on RF Superconductivity, Lanzhou, China, 17 - 21 Jul 2017, pp.TUPB016

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2019-06-11
16:46
LHC MDs 3163, 3164, and 3166: Injection oscillations throughout the cycle / Timko, Helga (CERN) ; Argyropoulos, Theodoros (CERN) ; Baudrenghien, Philippe (CERN) ; Calaga, Rama (CERN) ; Karpov, Ivan (CERN) ; Medina Medrano, Luis Eduardo (CERN) ; Peauger, Franck (CERN) ; Chapochnikova, Elena (CERN) ; Turaj, Katarzyna (CERN)
This note summarizes three inter-related machine development sessions that were performed in the LHC in the course of 2018. [...]
CERN-ACC-NOTE-2019-0021.
- 2019.
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2019-06-07
04:02
Generalizing the Method of Images for Complex Boundary Conditions : Application on the LHC Beam Screen / Belanger, Philippe (TRIUMF ; CERN)
This paper seeks to show that the beam screen of the LHC has an important effect on the electric field of the LHC beam, a few tens of sigmas away from its center. [...]
arXiv:1905.03405.
- 13 p.
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2019-06-06
04:05
A primary electron beam facility at CERN / Åkesson, T. (Lund U.) ; Corsini, R. (CERN) ; Dutheil, Y. (CERN) ; Evans, L. (CERN) ; Goddard, B. (CERN) ; Grudiev, A. (CERN) ; Latina, A. (CERN) ; Papaphilippou, Y. (CERN) ; Stapnes, S. (CERN)
This paper describes the concept of a primary electron beam facility at CERN, to be used for dark gauge force and light dark matter searches. [...]
arXiv:1905.07657.
- 4 p.
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2019-06-04
06:27
Test Results of the CERN HL-LHC low-$\beta$ Quadrupole Short Models MQXFS3c and MQXFS4 / Mangiarotti, Franco J (CERN) ; Bajas, Hugues (CERN) ; Ambrosio, Giorgio (Fermilab) ; Bajko, Marta (CERN) ; Bordini, Bernardo (CERN) ; Bourcey, Nicolas (CERN) ; Duda, Michal (Cracow, INP ; CERN) ; Desbiolles, Vincent (CERN) ; Feuvrier, Jerome (CERN) ; Fleiter, Jerome (CERN) et al. /LARP
For the High Luminosity Upgrade of the CERN Large Hadron Collider, lower $\beta$* quadrupole magnets based on advanced Nb3Sn conductors will be installed on each side of the ATLAS and CMS experiment insertion zones. As part of the technological developments needed to achieve the required field gradient of 132.6 T/m within a 150-mm aperture, short length model magnets, named MQXFS, are tested both at the CERN SM18 and FERMI Lab test facilities. [...]
FERMILAB-PUB-19-055-TD.- 2019 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 29 (2019) 4001705 Fulltext: PDF; External link: FERMILABPUB
In : Applied Superconductivity Conference 2018, Seattle, United States Of America, 28 Oct - 2 Nov 2018, pp.4001705

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2019-06-04
06:27
The HL-LHC Low-$\beta$ Quadrupole Magnet MQXF: from Short Models to Long Prototypes / Ferracin, Paolo (CERN) ; Ambrosio, Giorgio (Fermilab) ; Anerella, Michael (Brookhaven) ; Bajas, Hugues (CERN) ; Bajko, Marta (CERN) ; Bordini, Bernardo (CERN) ; Bossert, Rodger (Fermilab) ; Bourcey, Nicolas (CERN) ; Cheng, Daniel W (LBL, Berkeley) ; Chlachidze, Guram (Fermilab) et al.
Among the components to be upgraded in LHC inter- action regions for the HiLumi-LHC projects are the inner triplet (or low-β) quadrupole magnets, denoted as Q1, Q2a, Q2b, and Q3. The new quadrupole magnets, called MQXF, are based on Nb3 Sn superconducting magnet technology and operate at a gradient of 132.6 T/m, with a conductor peak field of 11.4 T. [...]
FERMILAB-PUB-19-008-TD.- 2019 - 9 p. - Published in : IEEE Trans. Appl. Supercond. 29 (2019) 4001309 Fulltext: PDF; External link: FERMILABPUB
In : Applied Superconductivity Conference 2018, Seattle, United States Of America, 28 Oct - 2 Nov 2018, pp.4001309

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2019-06-03
14:15
Novel beam-based correction and stabilisation methods for particle accelerators / Malina, Lukas
Precise control of beam optics and beam stability is of critical importance for machine protection and performance of today's high-energy particle accelerators [...]
CERN-THESIS-2018-426 ISSN1501-7710/No.2041. - Oslo, Norway : University of Oslo, 2018-10-24. - 134 p.

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