Status of the Next European Dipole (NED) Activity of the Collaborated Accelerator Research in Europe (CARE) Project

Devred, A.; Baudouy, B.; Baynham, D.E.; Boutboul, T.; Canfer, Simon; Chorowski, M.; Fabbricatore, P.; Farinon, S.; Félice, H.; Fessia, P.; Fydrych, J.; Greco, M.; Greenhalgh, J.; Leroy, D.; Loverige, P.; Michel, Fabrice; Oberli, L.; Ouden, A. den; Pedrini, D.; Poliński, J.; Previtali, V.; Quettier, L.; Rifflet, J. M.; Rochford, J.; Rondeaux, F.; Sanz, Santiago; Sgobba, S.; Sorbi, M.; Toral-Fernandez, F.; Weelderen, R. van; Védrine, P.; Vincent-Viry, O.; Volpini, G.

doi:10.1109/tasc.2005.849506

Cited by 30 publications

(25 citation statements)

References 19 publications

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“…Laminate 1 was used as a reference material; the work of fracture is as expected from a brittle matrix. The short beam shear strength of 94MPa is close to the NED specification of 100MPa [11]. Laminate 2 contained desized S-glass and showed a surprisingly high work of fracture result.…”

Section: Effect Of Polyimide Sizing and Heat Treatment On Work Of Frasupporting

confidence: 53%

Insulation Development for the Next European Dipole

Canfer¹,

Baynham²,

Greenhalgh³

2006

AIP Conference Proceedings

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Electrical insulation is one of the most challenging issues governing the engineering exploitation of niobium-tin conductors. This is especially true for future accelerator magnets manufactured by the "wind-and-react" route. Applications such as the LHC Interaction Region upgrade or in the longer term an LHC energy upgrade will require magnets to operate at high fields in demanding thermal and radiation environments. The Next European Dipole (NED) programme is aimed at the development of a large aperture (up to 88mm) high field (up to 15T conductor peak field) superconducting dipole magnet relying on niobium-tin conductors. Conventional insulation development is being addressed in two key areas, the engineering requirements for large scale magnet manufacture and the improvement of materials properties for magnet operation and performance. The paper will review the status of insulation technology for niobium-tin accelerator magnets and define the special requirements for NED. Particular emphasis will be placed on the development of fibre sizing technology and its influence on magnet manufacture and electrical/mechanical performance of insulation laminates. This work is supported in part by the European Community ABSTRACTElectrical insulation is one of the most challenging issues governing the engineering exploitation of niobium-tin conductors. This is especially true for future accelerator magnets manufactured by the "wind-and-react" route. Applications such as the LHC Interaction Region upgrade or in the longer term an LHC energy upgrade will require magnets to operate at high fields in demanding thermal and radiation environments. The Next European Dipole (NED) programme is aimed at the development of a large aperture (up to 88mm) high field (up to 15T conductor peak field) superconducting dipole magnet relying on niobium-tin conductors. Conventional insulation development is being addressed in two key areas, the engineering requirements for large scale magnet manufacture and the improvement of materials properties for magnet operation and performance. The paper will review the status of insulation technology for niobium-tin accelerator magnets and define the special requirements for NED. Particular emphasis will be placed on the development of fibre sizing technology and its influence on magnet manufacture and electrical/mechanical performance of insulation laminates.

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Section: Effect Of Polyimide Sizing and Heat Treatment On Work Of Frasupporting

confidence: 53%

Insulation Development for the Next European Dipole

Canfer¹,

Baynham²,

Greenhalgh³

2006

AIP Conference Proceedings

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“…For a triangular 9 Current R&D related with the LHC upgrades and aimed at the development of high field magnets (11÷15 T) [69,91] could be used to increase the livetime. storage ring (as the one proposed also for some Neutrino Factory setups), we have:…”

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confidence: 99%

θ₁₃, δ and the neutrino mass hierarchy at a γ = 350 double baseline Li/B β-beam

Coloma

Donini

Fernández‐Martínez

et al. 2008

J. High Energy Phys.

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We consider a β-Beam facility where 8 Li and 8 B ions are accelerated at γ = 350, accumulated in a 10 Km storage ring and let decay, so as to produce intenseν e and ν e beams. These beams illuminate two magnetized iron detectors located at L ≃ 2000 Km and L ≃ 7000 Km, respectively. The physics potential of this setup is analysed in full detail as a function of the flux. We find that, for the highest flux considered (10 × 10 18 ion decays per year per baseline), the sensitivity to θ 13 reaches sin 2 2θ 13 ≥ 1 × 10 −4 ; the sign of the atmospheric mass difference can be identified, regardless of the true hierarchy, for sin 2 2θ 13 ≥ 3 × 10 −4 ; and, CP violation can be discovered in 70% of the δ-parameter space for sin 2 2θ 13 ≥ 10 −3 , having some sensitivity to CP violation down to sin 2 2θ 13 ≥ 2 × 10 −4 for |δ| ∼ 90 • . IntroductionThe • ; for the leptonic CP-violating phase δ we have no information whatsoever (see, however, Ref. [20]). We have no clue on the ordering of the neutrino mass eigenstates, either, i.e. on the sign of the atmospheric mass difference ∆m 2 atm (of which only the absolute value has been measured). It must be stressed that neutrinos being hierarchically ordered (∆m The full understanding of the leptonic mixing matrix constitutes, together with the discrimination of the Dirac/Majorana character of neutrinos and with the measurement of their absolute mass scale, the main neutrino-physics goal for the next decade. In the recent past, most of the experimental breakthroughs in neutrino physics have been achieved by exploiting the so-called "disappearance channels": by observing a deficit in the neutrinos that reach the detector with respect to those expected to be emitted from the source, a positive and eventually unambiguous signal of neutrino oscillations has been established. New-generation experiments have been proposed to look for the fleeting and intimately related parameters θ 13 and δ through "appearance channels" such as ν e ↔ ν µ (the "golden channel") [22] and ν e → ν τ (the "silver channel") [23]. However, strong correlations between θ 13 and δ [24] and the presence of parametric degeneracies in the (θ 13 , δ) parameter space, [25]-[27], make the simultaneous measurement of the two variables extremely difficult. A further problem arises from our present imprecise knowledge of atmospheric parameters, whose uncertainties are far too large to be neglected when looking for such tiny signals as those expected in appearance experiments [28].Most of the proposed solutions to these problems imply the combination of different experiments and facilities, such as reactors (Double Chooz [29] should start data taking in 2008), Super-Beams (of which T2K [30] is the first approved one), β-Beams [31] or the Neutrino Factory [32,33]. To compare different options and to understand which of them is the one to be pursued as a future neutrino facility, a list of observables to be measured has been defined: θ 13 ; the CP-violating phase δ; the sign of the atmospheric mass difference (hereaft...

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“…Work has begun on January 1 st , 2004 and will extend over 5 years. The initial NED proposal had three main goals [2]- [3]:…”

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confidence: 99%

“…• to foster synergy of efforts among European laboratories involved in high-field accelerator magnet R&D, • to promote the development of high performance Nb 3 Sn wires and cables in collaboration with European industry (aiming at a non-copper critical current density of 1500 A/mm 2 at 4.2 K and 15 T), • to get ready for a luminosity upgrade of the Large Hadron Collider (LHC) (foreseen in 2015)…”

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confidence: 99%

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Overview and status of the Next European Dipole Joint Research Activity

Devred

Baudouy

Baynham

et al. 2006

Supercond. Sci. Technol.

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The Next European Dipole (NED) Joint Research Activity was launched on 1st January 2004 to promote the development of high performance Nb 3 Sn conductors in collaboration with European industry (aiming at a non-copper critical current density of 1500 A/mm 2 at 4.2 K and 15 T) and to assess the suitability of Nb 3 Sn technology to the next generation of accelerator magnets (aiming at an aperture of 88 mm and a conductor peak field of ~ 15 T). It is part of the Coordinated Accelerator Research in Europe (CARE) project, involves eight collaborators and is half-funded by the European Union. After briefly recalling the Activity organization, we report the main progress achieved over the last year, which includes: the manufacturing of a double-bath He II cryostat for heat transfer measurements through Nb 3 Sn conductor insulation, detailed quench computations for various NED-like magnet configurations, the award of two industrial subcontracts for Nb 3 Sn conductor development, the first results of a cross-calibration program of test facilities for Nb 3 Sn wire characterization, detailed investigations of the mechanical properties of heavily cold-drawn Cu/Nb/Sn composite wires and the preliminary assessment of a new insulation system based on polyimide-sized fiber glass tapes. Last, we briefly review the efforts of an ongoing Working Group on magnet design and optimization.

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Status of the Next European Dipole (NED) Activity of the Collaborated Accelerator Research in Europe (CARE) Project

Cited by 30 publications

References 19 publications

Insulation Development for the Next European Dipole

Insulation Development for the Next European Dipole

θ₁₃, δ and the neutrino mass hierarchy at a γ = 350 double baseline Li/B β-beam

Overview and status of the Next European Dipole Joint Research Activity

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Status of the Next European Dipole (NED) Activity of the Collaborated Accelerator Research in Europe (CARE) Project

Cited by 30 publications

References 19 publications

Insulation Development for the Next European Dipole

Insulation Development for the Next European Dipole

θ13, δ and the neutrino mass hierarchy at a γ = 350 double baseline Li/B β-beam

Overview and status of the Next European Dipole Joint Research Activity

Contact Info

Product

Resources

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θ₁₃, δ and the neutrino mass hierarchy at a γ = 350 double baseline Li/B β-beam