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First 2D cos-θ designs

EuCARD2 WP10 Task 3 March 17th, 2014

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BSCCO Rutherford (cf. WP10.2 status Feb 2nd, 2014)

• Width = 9.5 mm• Average thickness = 1.45 mm• t-edge = 1.391 mm / T-edge = 1.517 mm• 22 strands • Critical current = 6700 A ->• Je = 505 A/mm2

• Trans. pitch = 65 mm• + 100 µm insulation

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BSCCO 7blocks b9

• 5 T -> Je = 554 A/mm²

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BSCCO 6blocks b11

• 5 T -> Je = 550 A/mm2

B (T)

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BSCCO 5blocks b9

• 5 T -> Je = 553 A/mm²

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BSCCO Rutherford proposal

• Width = 10 mm• Average thickness = 1.45 mm• t-edge = 1.391 mm / T-edge = 1.517 mm• 24 strands • Critical current = 7050 A ->• Je = 505 A/mm2

• Trans. pitch = ? (> 65 mm)• + 100 µm insulation

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BSCCO(10 mm) 5blocks b7

• 5 T -> Je = 487 A/mm²

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BSCCO(10 mm) 6blocks b9

• 5 T -> Je = 515 A/mm²

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YBCO Roebel (cf. WP10.2 status Feb 2nd, 2014)

• Width = 10 mm• Thickness = 0.88 mm • 15 tapes• Critical current = 3000 A• Je = 340 A/mm2

• + 100 µm insulation (too big?)How to model Roebel cable with Roxie?

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‘Roebel’ 7blocks b11

• 5 T -> Je = 561 A/mm² (Joverall = 450 A/mm²)

B (T)

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‘Roebel’ 7blocks b9

• 5 T -> Je = 597 A/mm² (Joverall = 477 A/mm²)

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‘Roebel’ 4blocks b7

• 5 T -> Je = 520 A/mm² (Joverall = 416 A/mm²)

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YBCO Roebel (cf. WP10.2 status Feb 2nd, 2014)

• Width = 10 mm• Thickness = 0.44 mm • 8 tapes• Critical current = 1700 A• Je = 386 A/mm2

• + 50 µm insulation (too small?)

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‘Roebel’ 6blocks b9

• 5 T -> Je = 557 A/mm² (Joverall = 450 A/mm²)

I like this one!

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‘Roebel’ 5blocks b7

• 5 T -> Je = 533 A/mm² (Joverall = 430 A/mm²)

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Questions• Mid-plane gap?• Flat on the mid-plane (alpha = 0)?• Maximum inclinaison of a cable?• Insulation thickness?• Inter-layer block alignment?• Inter-layer gap?• Symmetrical copper wedges?• Number of blocks?

• No iron: Je ~ 530 - 560 A/mm²• Iron pole + 0.25 T max (without Fresca2) -> -25 A/mm²

Comments

17

100 mm

2x12 mm

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‘Roebel’ 4x2blocks b5

• 5 T -> Je = 697 A/mm² (Joverall = 564 A/mm²)