1. SQXF1 End Parts Mini Review G. Ambrosio and P. Ferracin October, 15 2013

2. Outline Plans for SQXF1 end spacer optimization Status Goals of this review Format October 15, 2013 G. Ambrosio and P. Ferracin2

3. Plans I Develop designs with ROXIE and BEND Practice windings: LARP (using Nb 3 Sn cable): – BEND L1 with plastic parts and 25m long cable – 2 short coils (~1m) with metal parts (rapid proto.) LE/RE: BEND/ROXIE, ROXIE/BEND CERN (using copper cable): – 1 short coil (~1m) with plastic parts – 1 short coils (~1m) with metal parts (rapid proto.) LE/RE: BEND/ROXIE, ROXIE/BEND  Converge on end spacers design October 15, 2013 G. Ambrosio and P. Ferracin3

4. Plans II Design and make flexible metallic end parts using rapid prototyping Practice Coils – Full length (1.5 m), full fabrication process, metal parts with flexible features – 2 coils by CERN and 2 coils by LARP  Finalize end parts with flexible features Coils for test in mirror structure: – 1 coil by CERN and 1 coil by LARP October 15, 2013 G. Ambrosio and P. Ferracin4

5. Status BEND and ROXIE designs are complete BEND pole was reproduced by ROXIE – This design was selected for the pole L1 winding by LARP with 25m cable is done – No popped strands, fluffiness, flexible end parts will be needed LARP practice winding to start in mid November CERN practice winding to start this week October 15, 2013 G. Ambrosio and P. Ferracin5

6. Susana Izquierdo Bermudez Example: Inner Layer Return End 6 MAX: 0.115 mm Roxie Bend Roxie Bend Original shape Final shape

7. Susana Izquierdo Bermudez Pole. Change on curvature parameters 7 ORIGINAL ROXIE PARAMETERS L1REL2REL1LEL2LE angle82818281 ellipticity1.8 Harmonic Order2.1 TORS10.09910.88790.08350.4529 TORS2-0.02861.06250.02970.0445 TORS3-1.0225-1.6606-0.7553-1.2707 TORS4-0.6854-1.1157-0.3654-0.9541 TRANSFORMED ROXIE PARAMETERS L1REL2REL1LE(+)L1LE(-)L2LE(+)L2LE(-) angle817980 ellipticity2.231.8042.55282.23051.7882.042 Harmonic Order2.82.32.82.52.32.5 TORS1-0.3-0.6 TORS2-1.2-2.3-3.3-3-2.5 TORS3-1.8-2.3-4.5-4.1-2.9-2.5 TORS4-0.5 -1.6-1.5-0.6-0.5 Max. Torsion higher for BEND solution Max. Hard Way Bending smaller for BEND solution BEND pole reproduced by ROXIE

8. CHARGE Give comments and recommendations about: The criteria used for the first iteration of SQXF1 end parts, The designs made using BEND and ROXIE, The design with flexible end parts, The plan for development and selection of the SQXF1 end parts October 15, 2013 G. Ambrosio and P. Ferracin8

9. Format Very informal Paolo and I are asking your comments and recommendations, we will collect them to make the report If time (2 hours) is not sufficient we will have another meeting We plan other(s) mini-review about the end spacers to evaluate feedback for practice winding/coils October 15, 2013 G. Ambrosio and P. Ferracin9

10. Agenda Introduction and charge – Duration: 10 min (Giorgio Ambrosio) Criteria and design using BEND – Duration: 30 min (Miao Yu) – Discussion: 15 min Criteria and design using ROXIE – Duration: 30 min(Susana Izquierdo Bermudez) – Discussion: 15 min Design and plans for introducing flexible end parts – Duration: 10 min(Steve Krave) – Discussion: 10 min October 15, 2013 G. Ambrosio and P. Ferracin10