BNL FNAL LBNL SLAC Feb03 2012 LARP Conductor

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BNL -FNAL - LBNL - SLAC Feb-03 -2012 LARP Conductor Production Arup K. Ghosh

BNL -FNAL - LBNL - SLAC Feb-03 -2012 LARP Conductor Production Arup K. Ghosh (BNL) Feb-03 -2012 Nb 3 Sn conductor Production - A. Ghosh 1

Agenda • Procurement status • LHQ conductor • 108/127 Rev. E and F •

Agenda • Procurement status • LHQ conductor • 108/127 Rev. E and F • Strand Specification • Modifications • FY’ 12 LARP Procurement • AOB Feb-03 -2012 Nb 3 Sn conductor Production - A. Ghosh 2

108/127 Conductor • So far OST has delivered ~ 100 km of wire •

108/127 Conductor • So far OST has delivered ~ 100 km of wire • 60 km at 0. 8 mm • 40 km at 0. 778 m • Piece Lengths : > 550 m 95% >1000 m 85% >2000 m 50% >3000 m 39% >5000 m 20% • Production is not as good as 54/61 • Jc(12 T) : 2880 ± 110 A/mm 2 665 C/50 h • Jc(15 T) : 1430 ± 91 • Cu % : 54. 1% • RRR: 105 ± 41 Feb-03 -2012 Nb 3 Sn conductor Production - A. Ghosh 3

Present Status • Production at OST has recently been impacted due to a problem

Present Status • Production at OST has recently been impacted due to a problem with their large draw bench. • All deliveries are delayed by several months. • A recent delivery (592615) was put on-hold as wire from one billet did not meet specifications. • Outstanding PO’s are the following: Feb-03 -2012 Nb 3 Sn conductor Production - A. Ghosh 4

108/127 Strand Production and Cabling Plan • Cable ID ending in R denotes cable

108/127 Strand Production and Cabling Plan • Cable ID ending in R denotes cable made using standard 2 -pass method • Cable ID without R denotes cable made using 1 -pass with annealed strand • Cable ID ending in Z denotes cable made with annealed strand with core. • HQ 1: 1 m HQ, LHQ: 4 m • 1 UL of HQ 1 requires 18 kg, LHQ: 72 kg Feb-03 -2012 May-16 -18, 2011 CM 16 Arup Ghosh Nb 3 Sn conductor Production - A. Ghosh 5 5

108/127 Strand Production and Cabling Plan Feb-03 -2012 May-16 -18, 2011 Nb 3 Sn

108/127 Strand Production and Cabling Plan Feb-03 -2012 May-16 -18, 2011 Nb 3 Sn conductor Production - A. Ghosh CM 16 Arup 6 6

LHQ-Conductor • By the end of CY 2012 we will have • 760 kg

LHQ-Conductor • By the end of CY 2012 we will have • 760 kg of Ta-ternary wire • Rev. E • sufficient for ~ 10 UL’s of LHQ • 470 kg of Ti-ternary wire • Rev. F • sufficient for ~ 6 UL’s of LHQ Feb-03 -2012 Nb 3 Sn conductor Production - A. Ghosh 7

Specification Rev-E Process Ternary RRP Nb 3 Sn Strand Diameter, mm 0. 7 –

Specification Rev-E Process Ternary RRP Nb 3 Sn Strand Diameter, mm 0. 7 – 0. 8 ±. 003 0. 778 Jc(12 T) at 4. 2 K, A/mm 2 ≥ 2650 SFCorr. 2800 Jc(15 T) at 4. 2 K, A/mm 2 >1400 Ds, µm (subelement diameter) < 60 108/127 Js, A/mm 2 >3000 Remove Cu-fraction, % 53 ± 3 Change ? RRR (after full reaction) ≥ 60 >100 Twist Pitch, mm 14 ± 2 Twist Direction Minimum Piece length, m right-hand screw 550 1000 or 2000 High temperature HT duration, h ≥ 48 REV. F: Ti-Ternary Feb-03 -2012 Nb 3 Sn conductor Production - A. Ghosh 8

HQ-C 15 Reaction 650 C/48 h Feb-03 -2012 Nb 3 Sn conductor Production -

HQ-C 15 Reaction 650 C/48 h Feb-03 -2012 Nb 3 Sn conductor Production - A. Ghosh 9

Sub-element (Filament) Diameter, mm Single Re-stack Feb-03 -2012 Nb 3 Sn conductor Production -

Sub-element (Filament) Diameter, mm Single Re-stack Feb-03 -2012 Nb 3 Sn conductor Production - A. Ghosh Double Re-stack 10