|
1.
|
Modeling of beam loss induced quenches in the LHC main dipole magnets
/ Breschi, Marco (U. Bologna (main)) ; Felcini, Enrico (CERN) ; Breccia, Francesca (U. Bologna (main)) ; Granieri, P P (CERN) ; Bergonzoni, Eleonora (U. Bologna (main)) ; Bevilacqua, Alessandro (U. Bologna (main)) ; Galassi, Pietro (U. Bologna (main)) ; Winkler, Tiemo (Twente U., Enschede) ; Bottura, Luca (CERN)
The full energy exploitation of the Large Hadron Collider (LHC), a planned increase of the beam energy beyond the present 6.5 TeV, will result in more demanding working conditions for the superconducting dipoles and quadrupoles operating in the machine. It is hence crucial to analyze, understand, and predict the quench levels of these magnets for the required values of current and generated magnetic fields. [...]
2019 - 7 p.
- Published in : IEEE Trans. Appl. Supercond. 29 (2019) 4004407
|
|
|
2.
|
Analysis of Beam-Induced Quenches of the LHC Cables With a Multi-Strand Model
/ Breschi, Marco (Bologna U.) ; Bevilacqua, Andrea (Bologna U. ; CERN) ; Bottura, L (CERN) ; Granieri, Pier Paolo (KIT, Karlsruhe, TP)
In this paper we discuss results of a one-dimensional numerical model to simulate electrical and thermal transients in the superconducting cables for the LHC machine, with specific reference to the analysis of quench due to the heat released by beam losses. Two models have been developed, one based on the analysis of the behavior of a single strand, whereas the other accounts for all the strands in the multi-strand cable. [...]
2015 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 25 (2015) 4700405
In : Applied Superconductivity Conference 2014, Charlotte, NC, USA, 10 - 15 Aug 2014, pp.4700405
|
|
|
3.
|
Heat Extraction From the LHC Main Dipole, Main Quadrupole, and MQXA Superconducting Cables
/ Granieri, Pier Paolo (CERN) ; Santandrea, Dario (CERN) ; Koettig, Torsten (CERN) ; van Weelderen, Rob (CERN)
The forthcoming operation of the CERN Large Hadron Collider (LHC) at 13-14 TeV requires a deep understanding of the heat transfer mechanisms in the most critical superconducting magnets. This is aimed at determining their steady-state quench limits and constitutes an input to compute the magnets stability in transient conditions as well, to prevent beam induced quenches. [...]
2015 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 25 (2015) 4002005
In : Applied Superconductivity Conference 2014, Charlotte, NC, USA, 10 - 15 Aug 2014, pp.4002005
|
|
|
4.
|
Power Deposition in LHC Magnets With and Without Dispersion Suppressor Collimators Downstream of the Betatron Cleaning Insertion
/ Lechner, Anton (CERN) ; Auchmann, Bernhard (CERN) ; Bruce, Roderik (CERN) ; Cerutti, Francesco (CERN) ; Granieri, Pier Paolo (CERN) ; Marsili, Aurelien (CERN) ; Redaelli, Stefano (CERN) ; Shetty, Nikhil Vittal (CERN) ; Skordis, Eleftherios (CERN) ; Steele, Genevieve (CERN) et al.
The power deposited in dispersion suppressor (DS) magnets downstream of the LHC betatron cleaning insertion is governed by off-momentum protons which predominantly originate from single-diffractive interactions in primary collimators. With higher beam energy and intensities anticipated in future operation, these clustered proton losses could possibly induce magnet quenches during periods of short beam lifetime. [...]
2014 - 4 p.
- Published in : 10.18429/JACoW-IPAC2014-MOPRO021
Fulltext: PDF; External link: Published version from JACoW
In : 5th International Particle Accelerator Conference, Dresden, Germany, 15 - 20 Jun 2014, pp.MOPRO021
|
|
|
5.
|
Testing beam-induced quench levels of LHC superconducting magnets
/ Auchmann, B. (CERN) ; Baer, T. (CERN) ; Bednarek, M. (CERN) ; Bellodi, G. (CERN) ; Bracco, C. (CERN) ; Bruce, R. (CERN ; CERN ; CERN) ; Cerutti, F. (CERN ; CERN ; CERN) ; Chetvertkova, V. (CERN ; Darmstadt, GSI ; Frankfurt U. ; Darmstadt, GSI ; Frankfurt U.) ; Dehning, B. (CERN ; CERN ; CERN) ; Granieri, P.P. (CERN ; CERN ; CERN) et al.
In the years 2009-2013 the Large Hadron Collider (LHC) has been operated with the top beam energies of 3.5 TeV and 4 TeV per proton (from 2012) instead of the nominal 7 TeV. The currents in the superconducting magnets were reduced accordingly. [...]
arXiv:1502.05261.-
2015-06-25 - 21 p.
- Published in : Phys. Rev. Spec. Top. Accel. Beams 18 (2015) 061002
APS Open Access article: PDF; Preprint: PDF; External link: Preprint
|
|
|
6.
|
LHC IR Upgrade Nb-Ti, 120mm Aperture Model Quadrupole Test Results at 1.8K
/ Kirby, G A (CERN) ; Auchmann, B (CERN) ; Bajko, M (CERN) ; Datskov, V I (CERN) ; Durante, M (Saclay) ; Fessia, P (CERN) ; Feuvrier, J (CERN) ; Guinchard, M (CERN) ; Giloux, C (CERN) ; Granieri, P P (CERN) et al.
Over the last five years, the model MQXC quadruple, a 120 mm aperture, 120 T/m, 1.8 m long, Nb-Ti version of the LHC insertion upgrade (due in 2021), has been developed at CERN. The magnet incorporates several novel concepts to extract high levels of heat flux and provide high quality field harmonics throughout the full operating current range. [...]
CERN-ACC-2014-0032.-
Geneva : CERN, 2014 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 24 (2014) 4002405
Fulltext: PDF;
In : 23rd International Conference on Magnet Technology, Boston, MA, USA, 14 - 19 Jul 2013, pp.4002405
|
|
|
7.
|
|
|
8.
|
|
|
Thermo-electric Analysis of the Interconnection of the LHC main Superconducting Bus Bars
/ Granieri, P P (CERN ; Ecole Polytechnique, Lausanne, LPAP) ; Breschi, M (Bologna U., Dept. Elec. Engi.) ; Casali, M (Bologna U., Dept. Elec. Engi.) ; Bottura, L (CERN) ; Siemko, A (CERN)
Spurred by the question of the maximum allowable energy for the operation of the Large Hadron Collider (LHC), we have progressed in the understanding of the thermo-electric behavior of the 13 kA superconducting bus bars interconnecting its main magnets. [...]
CERN-ATS-2013-046.
-
2013. - 13 p.
Full text
|
|
|
9.
|
Fulltext
|
|
10.
|
Analysis of Defective Interconnections of the 13 kA LHC Superconducting Bus Bars
/ Granieri, P P (CERN ; Ecole Polytechnique, Lausanne, LPAP) ; Casali, M (Bologna U.) ; Bianchi, M (Bologna U.) ; Breschi, M (Bologna U.) ; Bottura, L (CERN) ; Willering, G (CERN)
The interconnections between Large Hadron Collider (LHC) main dipole and quadrupole magnets are made of soldered joints of two superconducting cables stabilized by a copper bus bar. The 2008 incident revealed the possible presence of defects in the interconnections of the 13 kA circuits that could lead to unprotected resistive transitions. [...]
CERN-ATS-2012-039.-
Geneva : CERN, 2012 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 22 (2012) 4000504
Fulltext: PDF;
In : 22nd International Conference on Magnet Technology, Marseille, France, 12 - 16 Sep 2011
|
|
email alert
ή εγγραφείτε στο 
RSS feed.