CERN Accelerating science

All CERN Accelerators documents

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2019-02-16
11:24
Design and Implementation of a Real-Time System Survey Functionality for Beam Loss Monitoring Systems / Hajdu, Csaba (Budapest University of Technology and Economics (HU)) ; Dabóczi, Tamás (dir.) (Budapest University of Technology and Economics (HU)) ; Zamantzas, Christos (dir.) (CERN)
This PhD thesis describes the design and implementation of a real-time system survey functionality for beam loss monitoring (BLM) systems, with a particular focus on signal processing aspects. In Part I, I introduce the basic concepts fundamental to the project. [...]
CERN-THESIS-2018-352.- 143 p. Fulltext: PDF; External link: Approve this document (restricted)

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2019-02-16
06:25
The ELENA facility / Bartmann, Wolfgang (CERN) ; Belochitskii, Pavel (CERN) ; Breuker, Horst (CERN) ; Butin, Francois (CERN) ; Carli, Christian (CERN) ; Eriksson, Tommy (CERN) ; Oelert, Walter (Mainz U.) ; Ostojic, Ranko (CERN) ; Pasinelli, Sergio (CERN) ; Tranquille, Gerard /ELENA ; AD
The CERN Antiproton Decelerator (AD) provides antiproton beams with a kinetic energy of 5.3 MeV to an active user community. The experiments would profit from a lower beam energy, but this extraction energy is the lowest one possible under good conditions with the given circumference of the AD. [...]
2018 - 10 p. - Published in : Philos. Trans. R. Soc. Lond. A 376 (2018) 20170266
In : Antiproton Physics in the ELENA Era : Theo Murphy meeting, Newport Pagnell, Buckinghamshire, UK, 4 - 5 Sep 2017, pp.20170266

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2019-02-14
07:22
Energy Density Method: An Approach for a Quick Estimation of Quench Temperatures in High-Field Accelerator Magnets / Salmi, Tiina (Tampere U. of Tech.) ; Schoerling, Daniel (CERN)
Accelerator magnets for future particle accelerators are designed to work with as high energy densities as possible to achieve high fields and compact magnet designs. A key factor limiting the energy density is given by the protection in case of a quench: If a quench occurs, the stored energy must be first absorbed by the windings, and the magnet temperature shall not exceed a given limit. [...]
2018 - 16 p. - Published in : IEEE Trans. Appl. Supercond. 29 (2018) 4900116

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2019-02-14
07:22
Upgrade of the NA61/SHINE Facility beyond 2020 for an Expanded Physics Programme / Larsen, Dag (Jagiellonian U.) /NA61/SHINE
The NA61/SHINE experiment studies hadron production in hadron-hadron, hadron-nucleus and nucleus-nucleus collisions. The physics programme includes the study of the onset of deconfinement and search for the critical point as well as reference measurements for neutrino and cosmic ray experiments. [...]
2019 - 18 p. - Published in : Universe 5 (2019) 24 Fulltext from Publisher: PDF;
In : 7th International Conference on New Frontiers in Physics, Kolymbari, Crete, Greece, 4 - 12 Jul 2018, pp.24

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2019-02-14
05:02
Simulations of an energy dechirper based on dielectric lined waveguides / Nie, Y. (CERN) ; Xia, G. (Manchester U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Pacey, T. (Manchester U. ; Cockcroft Inst. Accel. Sci. Tech.)
Terahertz frequency wakefields can be excited by ultra-short relativistic electron bunches travelling through dielectric lined waveguide (DLW) structures. These wakefields can either accelerate a witness bunch with high gradient, or modulate the energy of the driving bunch. [...]
arXiv:1711.07244.- 2018-11-12 - 5 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 909 (2018) 271-275 Fulltext from Publisher: PDF; Preprint: PDF;
In : 3rd European Advanced Accelerator Concepts Workshop, La Biodola, Isola d'Elba, Italy, 24 - 30 Sep 2017, pp.271-275

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2019-02-13
15:58
Note on the Efficiency of Differential Pumping in the LHC Polarized Gas Target (PGT) / Steffens, Erhard (University of Erlangen)
For a sufficient density of a window-less gas target based on a storage cell, a substantial gas flow rate is required, exceeding that of UHV vacuum systems. Therefore, differential pumping has to be applied in order to limit the gas flow into neighbouring sections. [...]
CERN-PBC-Notes-2019-002.- Geneva : CERN, 2019 Fulltext: PDF;

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2019-02-13
06:57
The PSD CBM Supermodule Response Study for Hadrons in Momentum Range 2 – 6 GeV/c at CERN Test Beams / Finogeev, D (Moscow, INR) ; Golubeva, M ; Guber, F (Moscow, INR) ; Ivashkin, A (Moscow, INR) ; Izvestnyy, A (Moscow, INR) ; Karpushkin, N (Moscow, INR) ; Morozov, S (Moscow, INR) ; Reshetin, A (Moscow, INR)
The Projectile Spectator Detector (PSD) will be used at the Compressed Baryonic Matter (CBM) experiment at FAIR to measure the centrality and orientation of the reaction plane in heavy-ion collisions. A study of PSD supermodule response at proton and pion momentum range 2 – 6 GeV has been done at the CERN T10 beam line. [...]
2018 - 7 p. - Published in : KnE Energ. Phys. 3 (2018) 333-339 Fulltext: PDF;
In : The 3rd International Conference on Particle Physics and Astrophysics, Moscow, Russia, 2 - 5 Oct 2017, pp.333-339

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2019-02-12
17:06
MD#2889: 16L2 Event Dynamics and UFO Nature Investigation / Lindstrom, Bjorn Hans Filip (Uppsala University (SE)) ; Apollonio, Andrea (CERN) ; Dziadosz, Martyna (AGH University of Science and Technology (PL)) ; Gorzawski, Arkadiusz (University of Malta (MT)) ; Grob, Laura Katharina ; Holzer, Eva Barbara (CERN) ; Lechner, Anton (CERN) ; Medvedeva, Tatiana (Russian Academy of Sciences (RU)) ; Schmidt, Rudiger (Technische Universitaet Darmstadt (DE)) ; Valette, Matthieu et al.
Micrometer sized particles (UFOs) entering the beam are a known cause of localized beam losses since the beginning of high intensity beam operation, however the origin of these particles is not fully known [...]
CERN-ACC-2019-0032.
- 2019. - 5 p.
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2019-02-12
13:16
Simulations of RF beam manipulations including intensity effects for CERN PSB and SPS upgrades / Quartullo, Danilo
During Long Shutdown 2 (LS2, 2019-2021) all the injectors of the CERN LHC will undergo several upgrades to fulfill the requests of the LHC Injectors Upgrade (LIU) Project [...]
CERN-THESIS-2019-006 - 179 p.

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2019-02-12
08:40
Conception and design of a cooling system for the LHC injection kicker magnets / Vega Cid, L (CERN ; Madrid, Polytechnic U.) ; Abánades, A (Madrid, Polytechnic U.) ; Barnes, M J (CERN) ; Mostchmann, F (CERN) ; Vlachodimitropoulos, V (CERN) ; Weterings, W (CERN)
The CERN Large Hadron Collider is equipped with two fast single-turn injection kicker systems that deflect the incoming particle beam onto the accelerator’s orbit. The high intensity LHC beam, circulating for many hours, can cause considerable heating of the injection kicker magnets. [...]
2019 - 10 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 916 (2019) 296-305 Fulltext: PDF;

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