1. LARP Meeting, Oct. 6, 2005 D.R. Dietderich, LBNL1 LARP Cable R&D FY05 & FY-06 Plans D.R. Dietderich, LBNL Geneva, IL October 5-6, 2005 bnl – fnal – lbnl – slac US LHC Accelerator Research Program

2. LARP Meeting, Oct. 6, 2005 D.R. Dietderich, LBNL2 Conductor Development Program Long Range Goals –J c = 3000 A/mm 2 –D eff = 40 microns or less –Piece length > 10,000 m –Heat treatment < 400 hr –Cost: < $1.50/kA-m (12 T) Progress (FY05) –J c >3000 A/mm 2 –(RRR>100, Is~1150A) –Practical demos in progress – 3,000-4,000m –150 hr –$ 5.50/kA-m (RRP)

3. LARP Meeting, Oct. 6, 2005 D.R. Dietderich, LBNL3 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

4. LARP Meeting, Oct. 6, 2005 D.R. Dietderich, LBNL4 CDP Inventory of Nb 3 Sn +12kg Nb/NbTi Rod

5. LARP Meeting, Oct. 6, 2005 D.R. Dietderich, LBNL5 HEP R&D Conductor Sub-element study (High-Sn core, Nb-Ta alloy rods) Stack Delivery Date Quantity Magnet –84/91Oct. 1415kg (30kg) SR-01 –108/127Oct. ?(30kg) ? –198/217Sept.½ kg(15kg) Doping study (High-Sn core, Nb/NbTi rods) –84/91Nov. 30 ?(30kg) ? 0. 7 m m

6. LARP Meeting, Oct. 6, 2005 D.R. Dietderich, LBNL6 CDP Orders for LARP Quantity Delivery Date Stack Magnet 33kgat LBNL 54/61 SR-01? 35kgNov. 05 54/61 ? 35kgNov. 05 84/91? 90kgMar. 0684/91 or 54/61? High-Sn Core and NbTa alloy rods

7. LARP Meeting, Oct. 6, 2005 D.R. Dietderich, LBNL7 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 J c ~3,000A/mm 2 at 12T, 4.2K I s ~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

8. LARP Meeting, Oct. 6, 2005 D.R. Dietderich, LBNL8 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

9. LARP Meeting, Oct. 6, 2005 D.R. Dietderich, LBNL9 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

10. LARP Meeting, Oct. 6, 2005 D.R. Dietderich, LBNL10 Final TQ Cable 1.Fabricate cable slightly over size 2.Anneal at 200 o C for 4h 3.Re-roll to decreasing thickness by 25-50  m to compact cable to make it more mechanically stable

11. LARP Meeting, Oct. 6, 2005 D.R. Dietderich, LBNL11 FY-06 Magnet Cable

12. LARP Meeting, Oct. 6, 2005 D.R. Dietderich, LBNL12

13. LARP Meeting, Oct. 6, 2005 D.R. Dietderich, LBNL13 End

14. LARP Meeting, Oct. 6, 2005 D.R. Dietderich, LBNL14 FY-06 R&D Effort New Strand –TQ or SQ prototyping –Develop cabling parameters Residual twist in cables Fully keystoned narrow cables Core cables

15. LARP Meeting, Oct. 6, 2005 D.R. Dietderich, LBNL15 TQ Candidate Strands in CDP/HEP Inventory XXXX 54/61 2800 0.7 50%>50April or May delivery CDP/HEP R&D CDP/HEP Purchase

16. LARP Meeting, Oct. 6, 2005 D.R. Dietderich, LBNL16 Possible Strand for TQ1a Conductor needed: 25kg minimum Jc (12T, 4.2K): 2,000-3,000A/mm 2 RRR: >50 Stability Current I s (4.2K): >650A Strand 8079 90/91 stack

17. LARP Meeting, Oct. 6, 2005 D.R. Dietderich, LBNL17 Conductor Properties