CERN Accelerating science

All CERN Accelerators documents

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2019-05-22
09:07
Accelerators in the 21st Century / Zimmermann, Frank (CERN)
More than 30,000 accelerators are in operation worldwide. Of these less than 1% are devoted to basic research. [...]
2018 - 11 p. - Published in : EPJ Web Conf. 182 (2018) 02134 Fulltext: PDF;
In : 6th International Conference on New Frontiers in Physics, Kolymbari, Krete, Greece, 17 - 29 Aug 2017, pp.02134

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2019-05-22
09:07
Linac4 source extraction and low energy beam transport study / Noll, D (CERN) ; Bencini, V (CERN) ; Lallement, J B (CERN) ; Lettry, J (CERN) ; Lombardi, A M (CERN) ; Lorenzo, F Di (CERN) ; Mattei, S (CERN) ; O'Neil, M (CERN)
In the framework of the LHC Injector Upgrade program, a new normal conducting linac (Linac4) operating at the frequency of 352 MHz has been recently commissioned to the final energy of 160 MeV. Linac4 will be connected to the LHC injector chain in 2020 and it is expected to provide a 40 mA, 400 µs H− beam for charge-exchange injection into the Proton Synchrotron Booster. [...]
2018 - 3 p. - Published in : AIP Conf. Proc. 2011 (2018) 080026
In : International Conference on Ion Sources, CERN Geneva, Geneva, Switzerland, 15 - 20 Oct 2017, pp.080026

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2019-05-22
09:07
Analysis of H− extraction in the Linac4 negative ion source by 2.5D particle simulation / Abe, S (Keio U.) ; Nishioka, S (Keio U.) ; Mattei, S (CERN) ; Miyamoto, K (Naruto U. of Education) ; Hatayama, A (Keio U.) ; Lettry, J (CERN)
The purpose of this study is to investigate the extraction mechanisms of the H− ions in the Linac4 negative ion source by using an improved two-dimensional in real space and three-dimensional in velocity space Particle in Cell (2D3V-PIC) model. In this model, the following collision processes of the surface produced H− (Hsp−) ions have been introduced and the effects of the collisions on H− extraction have been analyzed: elastic (Hsp− - H2) and charge exchange (Hsp− - H). [...]
2018 - 3 p. - Published in : AIP Conf. Proc. 2011 (2018) 080020
In : International Conference on Ion Sources, CERN Geneva, Geneva, Switzerland, 15 - 20 Oct 2017, pp.080020

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2019-05-21
12:15
Characterization of impedance and wakefields of accelerator devices in the short bunch limit and beam dynamics effects for the CLIC Damping Rings / Passarelli, Andrea (Universita e sezione INFN di Napoli (IT)) ; Bartosik, Hannes (dir.) (CERN) ; Papaphilippou, Yannis (dir.) (CERN) ; Vittorio Giorgio, Vaccaro (dir.) (INFN sez. Naples) ; Boine-Frankenheim, Oliver (dir.) (TU Darmstadt)
The Damping Rings (DRs) complex of the Compact LInear Collider (CLIC) has to provide ultra low emittances to the linear accelerating sections in order to reach a luminosity of $2\times10^{34}$ cm$^2$ s$^{-1}$ at the centre of mass energy $3$ TeV. Due to the high intensity, short bunches and low transverse emittances, collective effects are expected to seriously affect the performance of the DRs, limiting the electron and positron beam intensity at extraction, or causing an intolerable degradation of the beam quality [...]
CERN-THESIS-2019-045.- Fulltext: PDF; External link: Approve this document (restricted)

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2019-05-21
06:34
The ion source for the commissioning of ELENA ring / Megía-Macías, A (Unlisted, ES) ; Gebel, R (Julich, Forschungszentrum) ; Lefort, B (CERN)
The commissioning and first results of the ion source to test the Extremely Low ENergy Antiproton ring ELENA are presented. ELENA is a compact ring for cooling and further deceleration of 5.3 MeV antiproton delivered by CERN Antiproton Decelerator (AD) down to 100 keV. [...]
2018 - 3 p.. - Published in : AIP Conf. Proc. 2011 (2018) 090014
In : International Conference on Ion Sources, CERN Geneva, Geneva, Switzerland, 15 - 20 Oct 2017, pp.090014

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2019-05-20
15:18
Protons Beyond the LHC Injectors Upgrade Project / Koukovini Platia, Eirini (CERN) ; Bartosik, Hannes (CERN) ; Forte, Vincenzo (CERN) ; Giovannozzi, Massimo (CERN) ; Huschauer, Alexander (CERN) ; Lasheen, Alexandre (CERN) ; Rumolo, Giovanni (CERN) ; Chapochnikova, Elena (CERN)
The Large Hadron Collider (LHC) Injectors Upgrade (LIU) project is implementing major changes during the second long shutdown (LS2) across the injectors complex. The main aim of the project is to improve the performance of the accelerator chain for the production of LHC beams [...]
CERN-PBC-REPORT-2019-004.- Geneva : CERN, 2019 - 35. Fulltext: PDF;

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2019-05-20
09:34
Co-Simulation of Transient Effects in Superconducting Accelerator Magnets / Maciejewski, Michal (CERN) ; Auchmann, Bernhard (dir.) (CERN/PSI) ; Bartoszewicz, Andrzej (dir.) (Lodz University of Technology)
Numerical modeling of complex physical systems involving several coupled physical domains, so called multi-domain and multi-physics systems, poses considerable challenges w.r.t. consistency of the formulation and selection of a suitable representation. [...]
CERN-THESIS-2018-421.- 139 p. Fulltext: PDF; External link: Approve this document (restricted)

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2019-05-17
16:45
Adjudication of an order for the supply of ""ultra-high vacuum Flanges"" for the vacuum system of the CERN 400 GeV proton accelerator
CERN-SPS-Spec-79-054-AMR ; SPS-AMR-HW-Spec-DI-54.
- 1979. - 6 p.
Full text

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2019-05-17
16:42
Technical specifications for the vacuum chambers of the orbit correction and measuring elements
CERN-LabII-Spec-73-007-CO ; LabII-CO-Spec-73-7.
- 1973. - 14 p.
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2019-05-17
16:39
Specification of two vacuum tanks for prototype septum magnets
CERN-LabII-Spec-72-003-BT ; LabII-BT-JD-GC-EEK-D-03.
- 1972. - 11 p.
Full text

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