Optimization of Nb$_3$Sn Rutherford Cables Geometry for the High-Luminosity LHC

The quadrupole and dipole magnets for the LHC High Luminosity (HL-LHC) upgrade will be based on Nb3Sn Rutherford cables that operate at 1.9 K and experience magnetic fields of up to about 12 T. An important step in the design of these magnets is the development of the high aspect ratio Nb3Sn cables to achieve the nominal field with sufficient margin. The strong plastic deformation of unreacted

Nb_3Sn

strands during the Rutherford cabling process may induce non negligible

I_c

and RRR degradation. In this paper, the cabling degradation is investigated as a function of the cable geometry for both PIT and RRP conductors. Based on this analysis, new baseline geometries for both 11 T and QXF magnets of HL-LHC are proposed.

CERN LHC Coll
luminosity
numerical calculations
High-luminosity large hadron collider (HLLHC)
Nb3 Sn
Rutherford cable
CERN LHC Coll
wire
geometry
magnet: superconductivity

References(21)

Figures(0)

[1]

A First Baseline for the Magnets in the High Luminosity LHC Insertion Regions

E. Todesco

- IEEE Trans.Appl.Supercond. 24 (2014) 3

[2]

Magnet Design of the 150 mm Aperture Low-β Quadrupoles for the High Luminosity LHC

P. Ferracin

- IEEE Trans.Appl.Supercond. 24 (2014) 3

[3]

Design of 11 T Twin-Aperture Nb3Sn Dipole Demonstrator Magnet for LHC Upgrades

M. Karppinen

- IEEE Trans.Appl.Supercond. 22 (2012) 3

[4]

Results and Plans for the Development of the Nb3Sn Low-Beta Quadrupoles (MQXF) for the High Luminosity LHC

G. Ambrosio

[5]

Progress on the Development of the Nb3Sn 11 T Dipole Magnet for the High Luminosity Upgrade of LHC

F. Savary

[6]

Analysis and Modeling of Damage in RRP Nb3Sn Wires During Cabling

E. Rochepault

- IEEE Trans.Appl.Supercond. 25 (2015) 3

[7]

Nb3Sn research and development in the USA - Wires and cables

D.R. Dietderich
,
A. Godeke

- Cryogenics 48 (2008) 331-340

[8]

Superconducting Strand and Cable Development for the LHC Upgrades and Beyond

E. Barzi

- IEEE Trans.Appl.Supercond. 23 (2013) 3

[9]

Correlation of filament distortion and RRR degradation in drawn and rolled PIT and RRP Nb3Sn wires

M. Brown

- Supercond.Sci.Technol. 29 (2016) 084008

[10]

Progress in Nb3Sn RRP Strand Studies and Rutherford Cable Development at FNAL

E. Barzi
,
D. Turrioni
,
A.V. Zlobin

- IEEE Trans.Appl.Supercond. 24 (2014) 3

[11]

11 T Conductor Performances

B. Bordini

[12]

SC procurement and QC at CERN

B. Bordini

[13]

The Bundle-Barrier PIT Wire Developed for the HiLumi LHC Project

B. Bordini

[14]

CERN Nb3Sn Strand Specification, Near Term Procurement and Measurement Plan

A. Ballarino

[15]

Impact of the Residual Resistivity Ratio on the Stability of Nb3Sn Magnets

Bordini

- IEEE Trans.Appl.Supercond. 22 (2012) 3

[16]

International Review of the Superconducting Cable for the HL-LHC Inner Triplet quadrupole

A. Ballarino

[17]

Development of the Cable for the 11 T Dipole

L. Oberli

[18]

Evidence for highly localized damage in internal tin and powder-in-tube Nb3Sn strands rolled before reaction obtained from coupled magneto-optical imaging and confocal laser scanning microscopy

A. Polyanskii

- Supercond.Sci.Technol. 22 (2009) 095008

[19]

Strand Critical Current Degradation in Nb3Sn Rutherford Cables

E. Barzi

- IEEE Trans.Appl.Supercond. 11 (2001) 1

[20]

Study of Effects of Deformation in Nb3Sn Multifilamentary Strands

D. Turrioni

- IEEE Trans.Appl.Supercond. 17 (2007) 2

[21]

Design Optimization of the Nb3Sn 11 T Dipole for the High Luminosity LHC

E. Nilsson

- IEEE Trans.Appl.Supercond. 27 (2017) 4

Optimization of Nb3_33​Sn Rutherford Cables Geometry for the High-Luminosity LHC

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