CERN Accelerating science

LHC

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2021-10-20
06:01
The Gamma Factory path to high-luminosity LHC with isoscalar beams / Krasny, M W (Paris U., VI-VII ; CERN) ; Petrenko, A (Novosibirsk, IYF ; CERN) ; Płaczek, W (Jagiellonian U. (main))
There are two main ways to increase LHC luminosity without upgrading CERN injectors: (1) modification of beam-collision optics and (2) reduction of beam transverse emittance. The former is followed in the ongoing high-luminosity upgrade of the LHC (HL-LHC), while the latter, applicable only to ion beams, is described in this contribution [...]
SISSA, 2021 - 6 p. - Published in : PoS ICHEP2020 (2021) 690 Fulltext: PDF;
In : 40th International Conference on High Energy Physics (ICHEP), Prague, Czech Republic, 28 Jul - 6 Aug 2020, pp.690

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2021-10-15
06:04
Noble liquid calorimetry at the LHC and prospects of its application in future collider experiments / Aleksa, Martin (CERN)
Calorimetry is an important measurement technique in experimental particle physics. Although calorimeters based on liquefied noble gases were first proposed 50 years ago, they continue to play an important role in modern particle physics and have substantially contributed to the discovery of the Higgs boson at the Large Hadron Collider (LHC) at CERN in 2012..
2021 - 4 p. - Published in : Europhys. News 52 (2021) 28-31

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2021-10-06
06:16
Beam-induced surface modifications as a critical source of heat loads in the Large Hadron Collider / Petit, Valentine (CERN) ; Taborelli, Mauro (CERN) ; Zanin, Danilo Andrea (CERN) ; Himmerlich, Marcel (CERN) ; Neupert, Holger (CERN) ; Chiggiato, Paolo (CERN) ; Iadarola, Giovanni (CERN)
Beam-induced heat loads on the cryogenic regions of the Large Hadron Collider (LHC) exhibit a wide and unexpected dispersion along the accelerator, with potential impact on the performance of its High-Luminosity upgrade. Studies related the heat load source to the avalanche multiplication of electrons at the surface of the beam vacuum chamber, a phenomenon known as electron could build-up. [...]
2021 - 10 p. - Published in : Commun. Phys. 4 (2021) 192 Fulltext: PDF;

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2021-10-05
07:50
Development and test of single-bore $Cos \vartheta$ Nb$_3$Sn dipole models with cold iron yoke / Andreev, N (Fermilab) ; Ambrosio, G (Fermilab) ; Barzi, E (Fermilab) ; Carcagno, R (Fermilab) ; Chichili, D R (Fermilab) ; DiMarco, J (Fermilab) ; Feher, S (Fermilab) ; Imbasciati, L (Fermilab) ; Kashikhin, V V (Fermilab) ; Lamm, M (Fermilab) et al.
Two short Nb$_3$Sn dipole models based on a single-bore cos-theta coil with a cold iron yoke were fabricated and tested at Fermilab. This paper summarizes the details of magnet design and fabrication procedure, and reports the test results including quench performance and quench heater studies, and the magnetic measurements..
FERMILAB-CONF-01-380.- 2002 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 12 (2002) 332-336 Fulltext: PDF;
In : 17th International Conference on Magnet Technology, CERN, Geneva, Switzerland, 24 - 28 Sep 2001, pp.332-336

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2021-10-05
07:50
Development and test of Nb$_3$Sn cos-theta dipoles based on PIT strands / Zlobin, A V (Fermilab) ; Ambrosio, G (Fermilab) ; Andreev, N (Fermilab) ; Barzi, E (Fermilab) ; Bossert, R (Fermilab) ; Carcagno, R (Fermilab) ; Chichili, D R (Fermilab) ; Elementi, L (Fermilab) ; Feher, S (Fermilab) ; Kashikhin, V V (Fermilab) et al.
Fermilab is involved in the development of new generation high-field accelerator magnets using state-of-the-art Nb$_3$Sn strands produced using different technologies. Two 1-m long models-mirror configuration and dipole magnet-were fabricated recently at Fermilab based on powder-in-tube (PIT) Nb$_3$Sn strands with small effective filament size. [...]
FERMILAB-CONF-04-274-TD.- 2005 - 4 p. - Published in : IEEE Trans. Appl. Supercond. 15 (2005) 1160-1163 Fulltext: PDF; External link: Fermilab Library Server (fulltext available)
In : Applied Superconductivity Conference: Harnessing the Magic, Jacksonville, FL, USA, 3 - 8 Oct 2004, pp.1160-1163

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2021-10-05
07:50
Test results for HD1, a 16 tesla Nb$_3$Sn dipole magnet / Lietzke, A F (LBL, Berkeley) ; Bartlett, S (LBL, Berkeley) ; Bish, P (LBL, Berkeley) ; Caspi, S (LBL, Berkeley) ; Chiesa, L (LBL, Berkeley) ; Dietderich, D (LBL, Berkeley) ; Ferracin, P (LBL, Berkeley) ; Gourlay, S A (LBL, Berkeley) ; Goli, M (LBL, Berkeley) ; Hafalia, R R (LBL, Berkeley) et al.
The Superconducting Magnet Group at Lawrence Berkeley National Laboratory has been developing the technology for using brittle superconductor in high-field accelerator magnets. HD1, the latest in a series of magnets, contains two, double-layer Nb$_3$Sn flat racetrack coils. [...]
2004 - 4 p. - Published in : IEEE Trans. Appl. Supercond. 14 (2004) 345-348
In : 18th International Conference on Magnet Technology, Morioka, Japan, 20 - 24 Oct 2003, pp.345-348

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2021-10-05
07:50
Design of HD2: A 14-Tesla Nb$_3$Sn dipole with a 35-mm bore / Bartlett, S E (LBL, Berkeley) ; Caspi, S (LBL, Berkeley) ; Dietderich, D R (LBL, Berkeley) ; Ferracin, P (LBL, Berkeley) ; Gourlay, S A (LBL, Berkeley) ; Hafalia, A R (LBL, Berkeley) ; Hannaford, C R (LBL, Berkeley) ; Lietzke, A F (LBL, Berkeley) ; Mattafirri, S (LBL, Berkeley) ; McInturff, A D (LBL, Berkeley) et al.
The Nb$_3$Sn dipole HD1, recently fabricated and tested at LBNL, pushes the limits of accelerator magnet technology into the 16 T field range, and opens the way to a new generation of HEP colliders. HD1 is based on a flat racetrack coil configuration and has a 10 mm bore. [...]
LBNL-54891.- 2005 - 4 p. - Published in : IEEE Trans. Appl. Supercond. 15 (2005) 1128-1131 Fulltext: PDF; External link: Electronic Version from a server
In : Applied Superconductivity Conference: Harnessing the Magic, Jacksonville, FL, USA, 3 - 8 Oct 2004, pp.1128-1131

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2021-10-05
07:50
Challenges in the Support Structure Design and Assembly of HD3, a Nb$_3$Sn Block-Type Dipole Magnet / Felice, H (LBNL, Berkeley) ; Borgnolutti, F (LBNL, Berkeley) ; Caspi, S (LBNL, Berkeley) ; Cheng, D W (LBNL, Berkeley) ; Dietderich, D R (LBNL, Berkeley) ; Ferracin, P (LBNL, Berkeley) ; Godeke, A (LBNL, Berkeley) ; Hafalia, A R (LBNL, Berkeley) ; Joseph, J M (LBNL, Berkeley) ; Lizarazo, J (LBNL, Berkeley) et al.
As part of the development of very high field dipole magnets for particle accelerators, the Superconducting Magnet Program at Lawrence Berkeley National Laboratory is developing block-type dipole magnets. One of the main challenges of this geometry is to provide support to the coil in the aperture while maintaining an adequate clear bore. [...]
2013 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 23 (2013) 4001705
In : Applied Superconductivity Conference 2012: The Next Century of Superconductivity, Portland, OR, USA, 7 - 12 Oct 2012, pp.4001705

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2021-10-05
07:50
“Block-Type” Coils Fabrication Procedure for the Nb$_3$Sn Dipole Magnet FRESCA2 / Rondeaux, F (Saclay) ; Ferracin, P (CERN) ; Durante, M (Saclay) ; Gauthier, R (CERN) ; Manil, P (Saclay) ; Munoz Garcia, J E (Saclay) ; Perez, J C (CERN) ; Rifflet, J -M (Saclay) ; de Rijk, G (CERN) ; Rochepault, E (CERN) et al.
The Nb$_3$Sn FRESCA2 dipole magnet is dedicated to upgrade the CERN cable test facility FRESCA. It is also a technological demonstrator of large-aperture Nb$_3$Sn accelerator magnet. [...]
2016 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 26 (2016) 4002405

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2021-10-05
07:50
Performance Analysis of HD1: A 16 Tesla Nb$_3$Sn Dipole Magnet / Mattafirri, S (LBNL, Berkeley) ; Bartlett, S E (LBNL, Berkeley) ; Bish, P A (LBNL, Berkeley) ; Caspi, S (LBNL, Berkeley) ; Dietderich, D R (LBNL, Berkeley) ; Ferracin, P (LBNL, Berkeley) ; Gourlay, S A (LBNL, Berkeley) ; Hannaford, C R (LBNL, Berkeley) ; Hafalia, A R (LBNL, Berkeley) ; Lau, W G (LBNL, Berkeley) et al.
The Superconducting Magnet Group at Lawrence Berkeley National Laboratory (LBNL) has been developing technology for high field accelerator magnets from brittle conductors. HD1 is a single bore block dipole magnet using two, double-layer Nb$_3$Sn flat racetrack coils. [...]
2005 - 4 p. - Published in : IEEE Trans. Appl. Supercond. 15 (2005) 1156-1159
In : Applied Superconductivity Conference: Harnessing the Magic, Jacksonville, FL, USA, 3 - 8 Oct 2004, pp.1156-1159

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High Luminosity Large Hadron Collider (HL-LHC) (956)
FP7 HiLumi LHC Design Study (264)