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2019-06-19
11:42
Outgassing Studies of Some Accelerator Materials / Riihimaki, Ari Krister (University of Helsinki (FI)) ; Yin Vallgren, Christina (dir.) (CERN) ; Raisanen, Jyrki (dir.) (University of Helsinki) ; Tikkanen, Pertti (dir.) (University of Helsinki)
This Master’s thesis has been produced at CERN (European Organization for Nuclear Research) in the Vacuum, Surfaces and Coatings group during an interesting time period for accelerator physics. With the High Luminosity Large Hadron Collider (HL-LHC) upgrade in progress and future accelerators under study, we will soon have particle beams with unprecedented luminosity and energy. [...]
CERN-THESIS-2019-061.- Helsinki : University of Helsinki, 2019-06-18 - 101 p. Fulltext: PDF; External link: Approve this document (restricted)

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2019-06-19
06:00
Design and thermal calculations of FRESCA2 heat exchangers for pressurised superfluid helium baths temperature controlling / Polinski, J (Wroclaw Tech. U.) ; Grabowski, M (Wroclaw U.) ; Chorowski, M (Wroclaw U.) ; Crean, A V (CERN) ; Parma, V (CERN)
In order to characterise and qualify superconducting cables at currents up to 70 kA, at background magnetic fields up to 13 T and at 1.9 K or 4.3 K temperature levels the Facility for Reception of Superconducting Cable (FRESCA2) is currently under design in collaboration between CERN and WUST. The FRESCA2 design using the double cryostat concept, with superconducting magnet external cryostat and a cable sample insert internal cryostat. [...]
2019 - 6 p. - Published in : IOP Conf. Ser. Mater. Sci. Eng. 502 (2019) 012086 Fulltext: PDF;

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2019-06-17
15:43
Crystal Collimation Tests with Pb Ion Beams / D'Andrea, Marco (Universita e INFN, Padova (IT)) ; Mirarchi, Daniele (University of Manchester (GB)) ; Redaelli, Stefano (CERN) ; Fomin, Alex (NSC Kharkiv Institute of Physics and Technology (UA)) ; Belli, Eleonora (CERN) ; Salvachua Ferrando, Belen Maria (CERN) ; Nevay, Laurence James (University of London (GB)) ; Rossi, Roberto (Sapienza Universita e INFN, Roma I (IT)) ; Scandale, Walter (CERN) ; Montesano, Simone (Universita e INFN, Bologna (IT)) et al.
During MD4168, performed on November 27th 2018, silicon crystals for a crystal-assisted collimation system were tested. [...]
CERN-ACC-NOTE-2019-0024. - 2019.
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2019-06-17
15:38
Operational Aspects of Crystal Collimation with Proton Beams / D'Andrea, Marco (Universita e INFN, Padova (IT)) ; Mirarchi, Daniele (University of Manchester (GB)) ; Redaelli, Stefano (CERN) ; Salvachua Ferrando, Belen Maria (CERN) ; Nevay, Laurence James (University of London (GB)) ; Rossi, Roberto (Sapienza Universita e INFN, Roma I (IT)) ; Scandale, Walter (CERN) ; Montesano, Simone (Universita e INFN, Bologna (IT)) ; Galluccio, Francesca (Universita e sezione INFN di Napoli (IT)) ; Serrano Galvez, Pablo (Universidad de Oviedo (ES)) et al.
During MD4167, performed on September 12th 2018, silicon crystals for a crystal-assisted collimation system were tested, with particular focus on operational aspects such as evaluation of cleaning performances and deployment during dynamical phases of the machine. [...]
CERN-ACC-NOTE-2019-0023. - 2019.
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2019-06-17
15:34
Crystal Collimation Tests with Proton Beams / D'Andrea, Marco (Universita e INFN, Padova (IT)) ; Mirarchi, Daniele (University of Manchester (GB)) ; Redaelli, Stefano (CERN) ; Salvachua Ferrando, Belen Maria (CERN) ; Nevay, Laurence James (University of London (GB)) ; Rossi, Roberto (Sapienza Universita e INFN, Roma I (IT)) ; Scandale, Walter (CERN) ; Montesano, Simone (Universita e INFN, Bologna (IT)) ; Galluccio, Francesca (Universita e sezione INFN di Napoli (IT)) ; Serrano Galvez, Pablo (Universidad de Oviedo (ES)) et al.
During MD3327, performed in two steps on June 14th and July 27th 2018, silicon crystals for a crystal-assisted collimation system were tested, with particular focus on the newly installed crystal on the horizontal plane of Beam 2. [...]
CERN-ACC-NOTE-2019-0022. - 2019.
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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) ; Shaposhnikova, 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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