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LARP Cable R&D FY05 & FY-06 Plans

LARP Cable R&D FY05 & FY-06 Plans. US LHC Accelerator Research Program. bnl – fnal – lbnl – slac. D.R. Dietderich, LBNL Geneva, IL October 5-6, 2005. Conductor Development Program. Long Range Goals J c = 3000 A/mm 2 D eff = 40 microns or less Piece length > 10,000 m

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LARP Cable R&D FY05 & FY-06 Plans

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  1. LARP Cable R&D FY05 &FY-06 Plans US LHC Accelerator Research Program bnl – fnal – lbnl – slac D.R. Dietderich, LBNL Geneva, IL October 5-6, 2005 D.R. Dietderich, LBNL

  2. Conductor Development Program • Long Range Goals • Jc = 3000 A/mm2 • Deff= 40 microns or less • Piece length > 10,000 m • Heat treatment < 400 hr • Cost: < $1.50/kA-m (12 T) • Progress (FY05) • Jc >3000 A/mm2 • (RRR>100, Is~1150A) • Practical demos in progress • 3,000-4,000m • 150 hr • $ 5.50/kA-m (RRP) D.R. Dietderich, LBNL

  3. Oxford Wire and Number of Element • Number of elements in each ring: • 1, 6, 12, 18, 24, 30, 36 • Sum of rings • 1, 7, 19, 37, 61, 91, 127 • HD-1 was 54/61(50% Cu) • New R&D • 60/61 (40%Cu), • 90/91 (40%Cu), 84/91 50%) • 126/127 12 18 24 D.R. Dietderich, LBNL

  4. +12kg CDP Inventory of Nb3Sn Nb/NbTi Rod D.R. Dietderich, LBNL

  5. 0.7mm HEP R&D Conductor • Sub-element study (High-Sn core, Nb-Ta alloy rods) Stack Delivery Date Quantity Magnet • 84/91 Oct. 14 15kg (30kg) SR-01 • 108/127 Oct. ? (30kg) ? • 198/217 Sept. ½ kg (15kg) • Doping study (High-Sn core, Nb/NbTi rods) • 84/91 Nov. 30 ? (30kg) ? D.R. Dietderich, LBNL

  6. CDP Orders for LARP Quantity Delivery Date Stack Magnet • 33kg at LBNL 54/61 SR-01? • 35kg Nov. 05 54/61 ? • 35kg Nov. 05 84/91 ? • 90kg Mar. 06 84/91 or 54/61 ? • High-Sn Core and NbTa alloy rods D.R. Dietderich, LBNL

  7. Strand for SR-01& LR-01 • Plan A if both SR and LR are to be made from same type of conducgtor • Billet 8220 with a 54/61 stack: • Billet 8220 Properties for HT at 650C for 48h • Jc ~3,000A/mm2 at 12T, 4.2K • Is ~1150A • RRR>170 • TQ-type cable made with RRP • Extracted strands being HT at BNL • HT is 635C for 48h and 96h • Once stability of extracted strand is known make decision about billet configurations D.R. Dietderich, LBNL

  8. Strand for SR-01& LR-01 cont. • Plan B if SR and LR can be made from different types of conductor • Use 84/91stack for SR-01 if it meets LARPS criteria of RRR and Is. • Since Oxford is having processing issues with the 84/91 • LR-01 made not be made from the same material D.R. Dietderich, LBNL

  9. Cabling Tasks for FY-05 • Proto-type cable for TQ to establish TQ cable parameters • 26, 27, 28 Strands • Keystone Angles of 1.0 and 1.3 degrees • Cable for TQ magnets • Practice: 3 UL + 3 UL extra (2 UL remain at FNAL) • Production: 10+ UL • Cable for SQ-02 D.R. Dietderich, LBNL

  10. TQ Parameters Units Tolerance Strands in cable No. 27 NA Strand diameter mm 0.7 +/ - 0.002 9.977 min Width mm 10.077 max. +0.000, - 0.100 Thickness mm 1.26 +/ - 0.010 Keystone angle deg. 1.0 +/ - 0.10 Final TQ Cable • Fabricate cable slightly over size • Anneal at 200oC for 4h • Re-roll to decreasing thickness by 25-50 mm to compact cable to make it more mechanically stable D.R. Dietderich, LBNL

  11. FY-06 Magnet Cable D.R. Dietderich, LBNL

  12. D.R. Dietderich, LBNL

  13. End D.R. Dietderich, LBNL

  14. FY-06 R&D Effort • New Strand • TQ or SQ prototyping • Develop cabling parameters • Residual twist in cables • Fully keystoned narrow cables • Core cables D.R. Dietderich, LBNL

  15. TQ Candidate Strands in CDP/HEP Inventory CDP/HEP R&D CDP/HEP Purchase XXXX 54/61 2800 0.7 50% >50 April or May delivery D.R. Dietderich, LBNL

  16. Possible Strand for TQ1a Conductor needed: 25kg minimum Jc (12T, 4.2K): 2,000-3,000A/mm2 RRR: >50 Stability Current Is(4.2K): >650A Strand 8079 90/91 stack D.R. Dietderich, LBNL

  17. Conductor Properties D.R. Dietderich, LBNL

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