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0

5

10

15

20

1980 1990 2000 2010 2020 2030

SC AcceleratorSC Low-beta InsertionPlan

Ope

ratio

n Fi

eld

(T)

Year

LHC 11T DS Dipole

HL-LHC Low-bata Quads.

HE-LHC

LHC 7TeV

LHC 3.5TeVRHIC

KEKB

SSC (Cancel)

HERATRISTAN

LEPTevatron

ISR

• 

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– – – –  μ μ

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– 

– 

YBCO

CeO2

Gd2Zr2O7

HastelloyNi alloy substrate

Middle layer (buffer)

ReBCO

Ag/Cu

0.5

0.6

0.7

0.8

0.9

1

1.1

I c/I c

0

Applied strain (%)

εirr

Δ(Ic/Ic0)>1%(b)

77 K

0 0.2 0.4 0.6 0.8 1.21

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• 

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θ

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Ongoing

Completed

Technical objective: develop technology base for the Long Quadrupole •  Evaluation of conductor and cable performance •  Development and optimization of coil fabrication procedures •  Comparison of mechanical design concepts & support structures

Magnet parameters: •  1 m length, 90 mm aperture, cos2θ coil geometry

Goal: predictable and reproducible performance above 200 T/m (10-11T)

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Nb

Ta

Nb or Ta

0

500

1000

1500

2000

2500

3000

6 8 10 12 14 16 18

Non

-Cu

Jc (A

/mm

2 )

B (T)

K1

K3

K4

4.2 K

K2

Nb3Sn(OST-RRP)

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10

20

00 200 400

Operating Current (A)

Mag

netic

Fie

ld (T

)

  

   

  

 

 

 

1

2

3

• 

• 

• • 

~55 mm

~64 mm

½ midsert insert

Conductor: High strength 2G HTS (YBCO)from SuperPower with ~45 μm Copper.

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