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SPS and CNGS

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2019-12-13
09:44
Experimental Validation of Superconducting Model Circuits for High-Luminosity Project at CERN: Flux Jumps and Magnet Transfer Functions / Ierardi, Stefano (Universita e sezione INFN di Napoli (IT))
The Nb3Sn superconducting MQXF quadrupole and the 11-T dipole magnets represent a new technology enabler for future high-energy particle accelerators: the former aims at reducing the beam size by a factor two and increasing the rate of collisions by a factor of five; the latter, instead, will be able to provide the same integrated field as the standard 8.3 T LHC dipole, but in a shorter length, thus freeing up space for additional collimators for reducing the beam losses produced by the higher intensity beams of the HL-LHC. A possible impediment comes from flux jumps that, so far, could not be avoided by design. [...]
CERN-THESIS-2019-242.- 125 p. Fulltext: PDF; External link: Approve this document (restricted)

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2019-12-11
13:42
SPS Beam Dump Facility - Comprehensive Design Study / Ahdida, Claudia Christina (CERN) ; Arduini, Gianluigi (CERN) ; Battistin, Michele (CERN) ; Brugger, Markus (CERN) ; Calviani, Marco (CERN) ; Goddard, Brennan (CERN) ; Jacobsson, Richard (CERN) ; Lamont, Mike (CERN) ; Bauche, Jeremie (CERN) ; Casolino, Mirkoantonio (The Barcelona Institute of Science and Technology (BIST) (ES)) et al.
The proposed Beam Dump Facility (BDF) is foreseen to be located at the North Area of the SPS. It is designed to be able to serve both beam dump like and fixed target experiments. [...]
CERN-PBC-REPORT-2019-005.- Geneva : CERN, 2019 - 589. SPS Beam Dump Facility - Comprehensive Design Study: PDF;

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2019-12-05
17:28
LHC MD4243: Q22 optics in TI2 / Velotti, Francesco Maria (CERN) ; Bartmann, Wolfgang (CERN) ; Bracco, Chiara (CERN) ; Goddard, Brennan (CERN) ; Hessler, Christoph ; Kain, Verena (CERN) ; Chapochnikova, Elena (CERN) ; Timko, Helga (CERN)
This MD shows the feasibility of operating TI2 with an optics matched to the SPS Q22 optics.Optics studies in the transfer line (TL) were performed together with an injection voltage scan toassess, also, the longitudinal quality of the injected single bunch..
CERN-ACC-NOTE-2019-0054. - 2019. - 5 p.
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2019-11-27
10:26
Beam steering performance of bent silicon crystals irradiated with high-intensity and high-energy protons / Scandale, W (CERN) ; Calviani, M (CERN) ; D'Andrea, M (CERN) ; Esposito, L S (CERN) ; Garattini, Marco (CERN ; Imperial Coll., London) ; Gilardoni, S (CERN) ; Montesano, S (CERN) ; Natochii, A (CERN ; Orsay, LAL ; Taras Shevchenko U.) ; Rossi, R (CERN) ; Smirnov, G I (CERN ; Dubna, JINR) et al.
Beam steering performance of bent silicon crystals irradiated with high-intensity and high-energy protons has been studied. In particular, crystals of the type used for collimation and extraction purposes in the Large Hadron Collider and the Super Proton Synchrotron at CERN have been irradiated at the HiRadMat CERN facility with $2.5 \times 10^{13}$ 440 GeV/c protons, with a pulse length of 7.2 $\upmu $s. [...]
2019 - 5 p. - Published in : Eur. Phys. J. C 79 (2019) 933 Fulltext from SCOAP3: PDF;

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2019-11-25
12:13
A new proposal for damping the resonances in CERN accelerators, using HOM couplers / Gilardi, Antonio
Parasitic resonances are a fundamental problem in the world of accelerators (there are also resonating cavities, but in this case the resonance is designed and is used to accelerate the beam) [...]
CERN-THESIS-2017-480 https://doi.org/10.1016/j.measurement.2019.07.034. - volume = "146", pages = "938 - 947" : Measurement, 2019-11-01. - 136 p.

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2019-11-16
04:03
Design and operation of the air-cooled beam dump for the extraction line of CERN's Proton Synchrotron Booster (PSB) / Perillo-Marcone, Antonio (CERN) ; Calviani, Marco (CERN) ; Solieri, Nicola (CERN) ; Kaiser, Paul (CERN) ; Sarrio, Alba (CERN) ; Venturi, Valentina (CERN) ; Vlachoudis, Vasilis (CERN)
A new beam dump has been designed, built, installed and operated to withstand the future proton beam extracted from the Proton Synchrotron Booster (PSB) in the framework of the LHC Injector Upgrade (LIU) Project at CERN, consisting of up to 1E14 protons per pulse at 2 GeV, foreseen after the machine upgrades planned for CERN's Long Shutdown 2 (2019-2020). [...]
arXiv:1910.08493. - 18 p.
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2019-11-15
05:00
The XBPF, a new multipurpose scintillating fibre monitor for the measurement of secondary beams at CERN / Ortega Ruiz, I. (CERN) ; Fosse, L. (CERN) ; Franchi, J. (CERN) ; Frassier, A. (CERN) ; Fullerton, J. (CERN) ; Kral, J. (CERN) ; Lauener, J. (CERN) ; Schneider, T. (CERN) ; Tranquille, G. (CERN)
The Beam Instrumentation group at CERN has developed a new scintillating fibre beam monitor for the measurement of secondary particle beams in the CERN Experimental Areas. The monitor has a simple design that stands out for its low material budget, vacuum compatibility, good performance, low cost, and ease of production. [...]
arXiv:1910.12519.- 2020-01-21 - 15 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 951 (2020) 162996 Fulltext: PDF; Fulltext from publisher: PDF;

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2019-11-08
04:03
Impedance reduction of the High-frequency Cavities in the CERN PS by Multi-harmonic Feedback / Bertin, Florian (CERN) ; Brischetto, Ylenia (CERN) ; Damerau, Heiko (CERN) ; Jibar, Azeddine (CERN) ; Perrelet, Damien (CERN)
In the framework of the "LHC Injectors Upgrade" (LIU) project, the CERN Proton Synchrotron (PS) is being prepared as a pre-injector for the Large Hadron Collider at high luminosity (HL-LHC). [...]
arXiv:1910.06874 ; LLRF2019/180. - 4 p.
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2019-11-01
06:03
SixTrack project: Status, runtime environment, and new developments / De Maria, Riccardo (CERN) ; Andersson, Joel (CERN) ; Field, Laurence (CERN) ; Giovannozzi, Massimo (CERN) ; Hermes, Pascal (CERN) ; Hoimyr, Nils (CERN) ; Iadarola, Giovanni (CERN) ; Kostoglou, Sofia (CERN) ; Maclean, Ewen (CERN ; U. Malta) ; McIntosh, Eric (CERN) et al.
SixTrack is a single-particle tracking code for high-energy circular accelerators routinely used at CERN for the Large Hadron Collider (LHC), its luminosity upgrade (HL-LHC), the Future Circular Collider (FCC), and the Super Proton Synchrotron (SPS) simulations. The code is based on a 6D symplectic tracking engine, which is optimised for long-term tracking simulations and delivers fully reproducible results on several platforms. [...]
2019 - 7 p. - Published in : 10.18429/JACoW-ICAP2018-TUPAF02 Fulltext from publisher: PDF;
In : 13th International Computational Accelerator Physics Conference (ICAP 2018), Key West, FL, USA, 20 - 24 Oct 2018, pp.TUPAF02

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2019-11-01
06:03
Muon background studies for beam dump operation of the K12 beam line at CERN / Rosenthal, Marcel (CERN) ; Banerjee, Dipanwita (CERN) ; Bernhard, Johannes (CERN) ; Brugger, Markus (CERN) ; Charitonidis, Nikolaos (CERN) ; Döbrich, Babette (CERN) ; Gatignon, Laurent (CERN) ; Gerbershagen, Alexander (CERN) ; Montbarbon, Eva (CERN) ; Rae, Bastien (CERN) et al.
In the scope of the Physics Beyond Colliders study at CERN a future operation of the NA62 experiment in beam dump mode is discussed, enabling the search for dark sector particles, e.g. heavy neutral leptons, dark photons and axions. [...]
2019 - 6 p. - Published in : 10.18429/JACoW-ICAP2018-SUPAG05 Fulltext from publisher: PDF;
In : 13th International Computational Accelerator Physics Conference (ICAP 2018), Key West, FL, USA, 20 - 24 Oct 2018, pp.SUPAG05

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