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All CERN Accelerators documents

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This new collection aggregates CERN accelerator-related documents on CDS. It will continuously be enriched and improved in the near future.
Latest additions:
2018-10-23
17:16
New SC Algorithm for MAD-X / Schmidt, Frank (CERN) ; Alexahin, Yuri (Fermi National Accelerator Lab. (US))
MAD-X allows to simulate space-charge effects by approximating the macro-particle ensemble with a Gaussian distribution and using analytic formulas for calculation of the space-charge kick at locations which should be chosen in advance e.g [...]
CERN-ACC-2018-0036. - 2018. - 20 p.

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2018-10-23
07:44
Beam-Background Tests with TOTEM Roman Pot Detectors at the LHC Injection Energy / Kašpar, Jan (CERN ; Prague, Inst. Phys.) /TOTEM
With the aim of measuring the total cross-section and the $\rho$ parameter, TOTEM has performed tests of beam conditions at the LHC injection energy of $\sqrt{s} = 900$ GeV. The tests have revealed complications in setting up the LHC collimators to minimise the background observed in the Roman Pot (RP) detectors, summarised in this article. [...]
2018 - 7 p. - Published in : Instruments 2 (2018) 20 Fulltext: PDF;

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2018-10-23
07:44
Irreversible degradation of Nb$_3$Sn Rutherford cables due to transverse compressive stress at room temperature / Ebermann, Patrick (CERN ; Vienna, Tech. U., Atominst.) ; Bernardi, Johannes (Vienna, Tech. U.) ; Fleiter, Jerome (CERN) ; Lackner, Friedrich (CERN) ; Meuter, Florian (CERN) ; Pieler, Magdalena (Vienna, Tech. U.) ; Scheuerlein, Christian (CERN) ; Schoerling, Daniel (CERN) ; Wolf, Felix (CERN ; T.U. Bergakademie Freiberg) ; Ballarino, Amalia (CERN) et al.
In the framework of the Future Circular Collider design study for a 100 TeV circular collider, 16 T superconducting bending magnets based on Nb$_3$Sn technology are being developed. A pre-stress on the conductor during magnet assembly at room temperature (RT) is needed to counteract the Lorentz forces during operation. [...]
2018 - 10 p. - Published in : Supercond. Sci. Technol. 31 (2018) 065009

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2018-10-23
07:44
Powering of an HTS dipole insert-magnet operated standalone in helium gas between 5 and 85 K / Van Nugteren, J (CERN) ; Kirby, G (CERN) ; Bajas, H (CERN) ; Bajko, M (CERN) ; Ballarino, A (CERN) ; Bottura, L (CERN) ; Chiuchiolo, A (CERN) ; Contat, P-A (CERN) ; Dhallé, M (Twente U., Enschede) ; Durante, M (Saclay) et al.
This paper describes the standalone magnet cold testing of the high temperature superconducting (HTS) magnet Feather-M2.1-2. This magnet was constructed within the European funded FP7-EUCARD2 collaboration to test a Roebel type HTS cable, and is one of the first high temperature superconducting dipole magnets in the world. [...]
2018 - 12 p. - Published in : Supercond. Sci. Technol. 31 (2018) 065002

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2018-10-23
07:44
Method for thermal and structural evaluation of shallow intense-beam deposition in matter / Pilan Zanoni, André (CERN)
The projected range of high-intensity proton and heavy-ion beams at energies below a few tens of MeV/A in matter can be as short as a few micrometers. For the evaluation of temperature and stresses from a shallow beam energy deposition in matter conventional numerical 3D models require minuscule element sizes for acceptable element aspect ratio as well as extremely short time steps for numerical convergence. [...]
2018 - 7 p. - Published in : Phys. Rev. Accel. Beams 21 (2018) 054801 Fulltext: PDF;

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2018-10-23
07:44
Physics at the SPS / Gatignon, L (CERN)
The CERN Super Proton Synchrotron (SPS) has delivered a variety of beams to a vigorous fixed target physics program since 1978. In this paper, we restrict ourselves to the description of a few illustrative examples in the ongoing physics program at the SPS. [...]
2018 - 6 p. - Published in : Rev. Sci. Instrum. 89 (2018) 052501

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2018-10-23
07:44
High gradient RF test results of S-band and C-band cavities for medical linear accelerators / Degiovanni, A (TERA, Novara) ; Bonomi, R (TERA, Novara) ; Garlasché, M (TERA, Novara) ; Verdú-Andrés, S (TERA, Novara) ; Wegner, R (TERA, Novara) ; Amaldi, U (TERA, Novara)
TERA Foundation has proposed and designed hadrontherapy facilities based on novel linacs, i.e. high gradient linacs which accelerate either protons or light ions. [...]
2018 - 7 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 890 (2018) 1-7 Fulltext: PDF;

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2018-10-23
07:44
Transverse beam instabilities in the presence of linear coupling in the Large Hadron Collider / Carver, L  R (CERN) ; Buffat, X (CERN) ; Li, K (CERN) ; Métral, E (CERN) ; Schenk, M (CERN ; Ecole Polytechnique, Lausanne)
In the past, transverse coherent instabilities have been observed at the Hadron-Electron Ring Accelerator (HERA) proton ring that were instigated by the presence of linear coupling. Linear coupling can also potentially explain some transverse instabilities that were observed in the Large Hadron Collider (LHC) in both run I and run II, however a detailed description of the destabilizing mechanism of linear coupling was not known at the time. [...]
2018 - 13 p. - Published in : Phys. Rev. Accel. Beams 21 (2018) 044401 Fulltext: PDF;

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2018-10-20
06:01
Windability Tests of Nb$_3$Sn Rutherford Cables for HL-LHC and FCC / Pulikowski, D (CERN ; West Pomeranian U. of Tech., Szczecin) ; Lackner, F (CERN) ; Scheuerlein, C (CERN) ; Savary, F (CERN) ; Tommasini, D (CERN) ; Pajor, M (West Pomeranian U. of Tech., Szczecin)
In the framework of the development of high field magnets made of Nb$_3$Sn superconductors for projects like the high luminosity upgrade of the large hadron collider (HL-LHC) and FCC studies, it is necessary to refine the understanding of the winding process and its impact of the overall mechanical integrity of the conductor. The mechanical behavior during winding of the unreacted Rutherford-type Nb$_3$Sn cables has been studied experimentally. [...]
2018 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 28 (2018) 4003905
In : 25th International Conference on Magnet Technology, Amsterdam, The Netherlands, 27 Aug - 1 Sep 2017, pp.4003905

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2018-10-20
06:01
Quench Behavior of the HL-LHC Twin Aperture Orbit Correctors / Mentink, Matthias (CERN) ; van Nugteren, Jeroen (CERN) ; Mangiarotti, Franco (CERN) ; Duda, Michal (CERN ; Cracow, INP) ; Kirby, Glyn (CERN)
A study was performed to understand the quench behavior and ensure adequate quench protection of the canted cosine theta (CCT) twin aperture orbit corrector magnet, a superconducting magnet under development as part of the high-luminosity upgrade of the Large Hadron Collider (HL-LHC). The cosine theta geometry features canted superconducting coils, which together produce a magnetic dipole field. [...]
2018 - 6 p. - Published in : IEEE Trans. Appl. Supercond. 28 (2018) 4004806
In : 25th International Conference on Magnet Technology, Amsterdam, The Netherlands, 27 Aug - 1 Sep 2017, pp.4004806

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