EuCARD-2 is co-funded by the partners and the European Commission under Capacities 7th Framework Programme, Grant Agreement EuCARD-2 WP-10 Status Philippe Fazilleau and Lucio Rossi Steering Committee Meeting Frankfurt,

Progress since May 2014 Task 2 – conductor YBCO tapes: Production and test of high Jc, high-field optimized Bruker tapes with record layer Jc values (very close to target performance); two tapes obtained from Bruker, Cable dummy lengths available ; new lengths requested for insulation, thermal properties and winding tests, Production of 10 m (mid october to KIT for punching qualification tests) + 90 m (mid december for FRESCA test and Feather-M0) of YBCO tape at Bruker, Procurement of alternative materials (SuperPower, Sunam, Fujikura, Sunam, SuperOX), 100 to 200 m each. BSSCO wire: Production of new lot (lot 87) of powders completed and characterization in progress ; this lot will be delivered to NHMFL and made into 3 billets (different grain dimensions and mix), 20 m of wire produced (lot 82) to be shipped at CERN for testing, Sample preparation for transverse loading on cable started (University of Twente) Philippe Fazilleau - SC5 meeting - 2 nd of october, 2014

Progress since May 2014 task 3 - magnets Block design with stacked tapes: 2D electromagnetic design achieved, 3D design on going, Twist region configuration studies on going, Winding test set up under study (tapes block transposition, twist region mechanical support) Aligned block with Roebel cable (baseline design): 2D and 3D electromagnetic design done, End optimization done, Mechanical model of the Roebel cable achieved, Dynamics effects study within Roebel cable on going (field harmonics calculation, remnant fields) Tests on Roebel cable insulation and mechanical reinforcement on going, Quench detection: pick-up coils have been designed and realized + copper loops added (eddy current effects) study performed Sub scale model Feather M0 for quench detection and coil production tests; design done (magnetic and quench propagation), 3 models foreseen (one in SS by the end of 2014, others in SC Roebel), SC cable mi-december, Feather M2 5 T insert; CAD design on going Philippe Fazilleau - SC5 meeting - 2 nd of october, 2014

Progress since May 2014 task 3 - magnets Cosine-theta with YBCO Roebel cable: Cos theta design with 2 layers (10 mm Roebel); 2 D electromagnetic done, end optimization on-going, FE mechanical model done New proposal cos-theta 1 layer (12 mm Roebel); thicker structure, mechanical design done BSSCO canted cosine theta coil: Skew angle optimization study achieved, Mini Whale CCT coil study on going Philippe Fazilleau - SC5 meeting - 2 nd of october, mm 15.5 mm

Milestones and Deliverables due up to M20 ( ) Report no. (D/M) TitleDue dateStatus Conceptual study of HTS accelerator magnets Delayed by a few days ; drafts available at the beginning of next week then reviewed by L. Rossi and Ph. Fazilleau and sent to M. Vretenar before the end of the week (10 th of october, 2014) 10MS64 YBCO magnet design completion Philippe Fazilleau - SC5 meeting - 2 nd of october, 2014

Summary on communication Scientific papers submitted relevant to the project Attended events (with EuCARD-2 presentation) AuthorTitle L. RossiThe EuCARD-2 Future Magnets project: the European collaboration for accelerator quality HTS magnets (ASC 2014) G. KyrbyAccelerator Quality HTS Dipole Magnet demonstrator designs for the EuCARD2, 5 T 40 mm clear aperture magnet (ASC 2014) J. van NugterenStudy of Conductor Anisotropy for a Five Tesla HTS Research Magnet using a Partial-Element-Equivalent-Circuit Model of a Roebel Cable (ASC 2014) C. LorinCos-theta design of dipole inserts made of YBCO-Roebel or BiSCCo Rutherford cables (ASC 2014) E. HaroVariation of Quench Propagation Velocities in YBCO Cables (ASC 2014) T. SalmiModelling Quench Protection Heater Delays in an HTS coil (ASC 2014) M. BonuraTransversal Thermal Conductivity of REBCO Coated Conductors (ASC 2014) A.BallarinoYBCO coated conductor with optimized high field performance at 4,2 K (poster)

Summary on communication Attended events (with EuCARD-2 presentation) Upcoming events (workshops, meetings, etc.) Title of eventDateVenueOutreach event? [Y/N] AttendanceLink to event or report Workshop WAM-HTS1 « High- current HTS cables » 21 st to 23 rd of May, 2014 DESY (Hambourg) N50https://indico.cern.ch/e vent/308828/ Seminar (under sponsoring of Eucard2 and Hilumi) on “Superconducting Magnets R&D in the T range for energy frontier machines” by L. Rossi 23rd of May, 2014 DESY (Hambourg) N80http://indico.cern.ch/ev ent/308828/timetable/ # detailed Outreach talk “The frontier of the knowledge and the LHC” ( sponsoring of Eucard2) by L. Rossi 21st of May, 2014 HambourgY120Flyer

Summary on communication Upcoming events (workshops, meetings, etc.) Title of eventDateVenueLink Workshop WAM- HTS2 « HTS Magnet Technology for High Energy Physics” november, 2014 Kyoto (Japan) ch/event/319762/o verview

Program for next 6 months Task 2 - conductor YBCO tape and Roebel cable: Production of Bruker YBCO tape (100 m), Roebel cable dummy tests (insulation, thermal properties, winding tests), Tests on YBCO tapes from alternative suppliers, BSSCo wire: Characterization of lot 87 between Nexans, CERN and BSSCo collaboration Tests in EU of 20 m of wire from lot 82, Samples for transverse stress loading: tests to be performed at UniGeneva Philippe Fazilleau - SC5 meeting - 2 nd of october, 2014

Program for next 6 months task 3 - magnets Block design with stacked tapes: Operating current regarding protection scheme and blockcoil structure. Prototype of dipole magnet using CuBe twist stack tape, 3D dipole magnet design using twist stack tape considering coil-ends, Mechanical study. Aligned block with Roebel cable (baseline design): Jc (B,T,theta) fit for Bruker YBCO tape, Quench simulations with FM0 in different operation temperatures (higher temp, lower current) Thermal conductivity measurements for YBCO Roebel cable Considering different quench detection options with measurements and simulations (pick up coils, voltage taps, sensors etc.), Mechanical study (CERN/CEA 2D cross-check and 3D study) Cosine-theta with YBCO Roebel cable: single layer cos-theta design: end design (with new Roxie version), 2D mechanical study, Tooling development for winding Philippe Fazilleau - SC5 meeting - 2 nd of october, 2014

Open issues Stacked tapes: transposition issues Mechanical holding (aligned block, stacked tapes) Philippe Fazilleau - SC5 meeting - 2 nd of october, 2014