# All CERN Accelerators documents

2019-08-17
09:04
 User defined elements in ANSYS for 2D multiphysics modeling of superconducting magnets / Brouwer, Lucas (LBNL, Berkeley) ; Arbelaez, Diego (LBNL, Berkeley) ; Auchmann, Bernhard (PSI, Villigen ; CERN) ; Bortot, Lorenzo (CERN) ; Stubberud, Edvard (CERN) Dynamic simulation of superconducting magnets is critical for the design of quench protection systems to prevent potentially damaging temperatures and high voltage from developing after magnet quench. Modeling these scenarios is challenging due to the many multiscale phenomena which impact magnet behavior. [...] 2019 - 12 p. - Published in : Supercond. Sci. Technol. 32 (2019) 095011

2019-08-17
09:04
 Modelling thermodynamics in a high-temperature superconducting dipole magnet: an inverse problem based approach / Ruuskanen, J (Tampere U. of Tech.) ; Stenvall, A (Tampere U. of Tech.) ; Lahtinen, V (Tampere U. of Tech.) ; van Nugteren, J (CERN) ; Kirby, G (CERN) ; Murtomäki, J (Tampere U. of Tech.) The use of practical high temperature superconductors (HTS), REBCO tapes especially, in magnet applications has become possible thanks to the increasing interest of manufacturers. One difficulty has been the nonlinear material properties that are challenging to measure and model. [...] 2019 - 11 p. - Published in : Supercond. Sci. Technol. 32 (2019) 094007

2019-08-16
10:47
 Machine Learning in Fast Beam Diagnositcs / Ling, Jerry (Univ. of California Santa Barbara (US)) In accelerator physics, detailed studies of beam often require disruptive measurement and take a long time to perform. [...] CERN-STUDENTS-Note-2019-059. - 2019. Access to fulltext

2019-08-16
06:43
 Summary of the Mechanical Performances of the 1.5 m Long Models of the Nb$^3$Sn Low-$\beta$ Quadrupole MQXF / Vallone, Giorgio (LBL, Berkeley) ; Ambrosio, Giorgio (Fermilab) ; Anderssen, Eric C (LBL, Berkeley) ; Bajas, Hugo (CERN) ; Bourcey, Nicolas (CERN) ; Cheng, Daniel W (LBL, Berkeley) ; Chlachidze, Guram (Fermilab) ; Ferracin, Paolo (CERN) ; Grosclaude, Philippe (CERN) ; Guinchard, Michael (CERN) et al. The Nb3Sn quadrupole MQXF is being developed as a part of the LHC High Luminosity upgrade. [...] FERMILAB-PUB-19-052-TD. - 2019. - 5 p. FERMILABPUB - Fulltext

2019-08-15
17:52
 In situ detector calibration at CLIC" / Blaising, Jean-Jacques (Centre National de la Recherche Scientifique (FR)) ; Dannheim, Dominik (CERN) ; Sailer, Andre (CERN) This entry is a placeholder for the CLICdp-Note-2019-003 which is currently under collab- oration review and will be uploaded at this location soon.. CLICdp-Note-2019-003.- Geneva : CERN, 2019 - 1. Fulltext: PDF;

2019-08-15
15:20
 An Analysis of a Potential Compact Positron Beam Source / Hessami, Rafi Mir-Ali ; Gessner, Spencer Jake (CERN) For positron studies in plasma wakefield accelerators such as AWAKE, the development of new, cheaper, and compact positron beam sources is necessary. [...] CERN-STUDENTS-Note-2019-053. - 2019. Access to fulltext

2019-08-15
09:16
 Collimation-induced experimental background studies at the CERN Large Hadron Collider / Bruce, R (CERN) ; Huhtinen, M (CERN) ; Manousos, A (CERN ; Innsbruck U. ; Aristotle U., Thessaloniki) ; Cerutti, F (CERN) ; Esposito, L (CERN) ; Kwee-Hinzmann, R (Royal Holloway, U. of London) ; Lechner, A (CERN) ; Mereghetti, A (CERN) ; Mirarchi, D (CERN) ; Redaelli, S (CERN) et al. The data produced at the particle physics experiments at the Large Hadron Collider (LHC) contain not only the signals from the collisions, but also a background component from proton losses around the accelerator. Understanding, identifying and possibly mitigating this machine-induced background is essential for an efficient data taking, especially for some new physics searches. [...] 2019 - 18 p. - Published in : Phys. Rev. Accel. Beams 22 (2019) 021004 Fulltext from Publisher: PDF;

2019-08-15
09:16
 Beam-based alignment of the SuperKEKB linac quadrupoles / Ogur, S (Bogazici U. ; CERN) ; Iida, N (KEK, Tsukuba) ; Kamitani, T (KEK, Tsukuba) ; Oide, K (CERN ; KEK, Tsukuba) ; Zimmermann, F (CERN) The positron linac of SuperKEKB contains accelerating structures surrounded by quadrupoles without nearby beam-position-monitors (BPMs) or steering magnets. In this situation, standard techniques for beam steering or beam-based-alignment are not efficient. [...] 2019 - 13 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 925 (2019) 199-211

2019-08-15
09:16
 Exploration of Two Layer Nb$_3$Sn Designs of the Future Circular Collider Main Quadrupoles / Lorin, Clement (Saclay) ; Fleiter, Jerome (CERN) ; Salmi, Tiina (Tampere U. of Tech.) ; Schoerling, Daniel (CERN) The goal of this study is to propose an alternative FCC quadrupole design where the risk from both their fabrication and their operation in the machine is reduced compared to previous analysis. Therefore, the number of coil layers has been reduced from four to two and the load-line margin has been increased from 14% to 20% compared to previous investigations (“Design of a Nb3Sn 400 T/m quadrupole for the future circular collider,” IEEE Trans. [...] 2019 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 29 (2019) 4001005

2019-08-15
09:16
 Test Result of the HL-LHC Beam Separation Dipole Model Magnet With the New Iron Cross Section / Suzuki, Kento (KEK, Tsukuba) ; Enomoto, Shun (KEK, Tsukuba) ; Higashi, Norio (KEK, Tsukuba) ; Iida, Masahisa (KEK, Tsukuba) ; Ikemoto, Yukiko (KEK, Tsukuba) ; Kawamata, Hiroshi (KEK, Tsukuba) ; Kimura, Nobuhiro (KEK, Tsukuba) ; Nakamoto, Tatsushi (KEK, Tsukuba) ; Ogitsu, Toru (KEK, Tsukuba) ; Ohata, Hirokatsu (KEK, Tsukuba) et al. We report the test results of the second short model magnet of the beam separation dipole for the High Luminosity Large Hadron Collider. The test shows that the second model has a good training performance and is capable of operating at the ultimate current that corresponds to 108% of the nominal one. [...] 2019 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 29 (2019) 4000905
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