CERN Accelerating science

All CERN Accelerators documents

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2019-02-19
11:08
Estimated LHC RF system performance reach at injection during Run III and beyond / Timko, Helga (CERN) ; Chapochnikova, Elena (CERN) ; Turaj, Katarzyna (CERN)
This note describes the performance limitations of the present LHC RF system on the injection plateau, in view of increased intensities in Run III and in the HL-LHC era. [...]
CERN-ACC-NOTE-2019-0005.
- 2018.
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2019-02-19
04:10
A magnetic spectrometer to measure electron bunches accelerated at AWAKE / AWAKE Collaboration
A magnetic spectrometer has been developed for the AWAKE experiment at CERN in order to measure the energy distribution of bunches of electrons accelerated in wakefields generated by proton bunches in plasma. [...]
arXiv:1902.05752.
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2019-02-18
14:21
MD#4164: Separatrix folding with octupoles during slow extraction at SPS / Stoel, Linda (Vienna University of Technology (AT)) ; Fraser, Matthew Alexander (CERN) ; Goddard, Brennan (CERN) ; Kain, Verena (CERN) ; Velotti, Francesco Maria (CERN)
The powering of the SPS main octupole circuit (LOF) during third-integer slow extraction was tested to reduce the density of the beam impinging the wires of the electrostatic extraction septum (ZS) [...]
CERN-ACC-NOTE-2019-0004.
- 2019.

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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
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 [...]
CERN-THESIS-2018-352 - 143 p.

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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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