1. FCC R&D WP5 Cavity Fabrication Status and Plans Dec-16
06/10/2016
M. Karppinen BE-RF-SRF

2. Objective
Development of new cavity fabrication methods suitable for production of large series of SC cavities based on thin film and bulk Nb technologies
06/10/2016
M. Karppinen BE-RF-SRF

3. WP 5: Scope WU 5.1 (C. Abajo Clemente CERN):
Copper and Niobium sheet supply
WU 5.2 (M. Karppinen CERN, V. Palmieri LNL) Fabrication of seamless cavities
WU 5.3 (G. Favre CERN, TBD BMAX):
High velocity forming of SC RF structures
06/10/2016
M. Karppinen BE-RF-SRF

4. WU 5.1: Cu- and Nb-sheet Supply
Specification, characterization, handling, and supply of copper and niobium sheets for the cavity forming development:
Task 1: Collection of technical specifications for the sheet metal to be used for cavity forming studies;
Task 2: Procurement of Cu- and Nb-sheets;
Task 3: Processing of the sheets including the heat treatments, chemical processing, and cutting to requred size;
Task 4: Material characterisation at appropriate stages ranging from material reception to samples extracted from formed cavities;
Task 5: Quality assurance related to the sheet metal supply to ensure the conformance with the technical specification and the traceability.
06/10/2016
M. Karppinen BE-RF-SRF

5. WU 5.2: Fabrication of Seamless Cavities
Development and validation of seamless cavity forming technology for multi-cell 800 MHz and mono-cell 400 MHz Cu-cavities
Task 1: Manufacturing drawings
Task 2: Material supplied by CERN
Task 3: Fabrication 800 MHz mono-cell cavity
Task 4: Fabrication 800 MHz 2-cell cavity
Task 5: Fabrication 400 MHz mono-cell cavity
06/10/2016
M. Karppinen BE-RF-SRF

6. WU 5.3 High Velocity Forming of SC RF-Structures
Objectives:
Thorough understanding of the electro-hydraulic forming process applied to elliptical copper and niobium cavities for superconducting RF structures.
Characterisation and modelling of copper and niobium for fast forming.
Production of a niobium functional structure.
Task 1: Manufacturing drawings
Task 2: Numerical modelling of 800 MHz half-cells
Task 3: Forming of 800 MHz Cu and Nb half-cells
Task 4: Fabrication of cut-off tubes
Task 5: Assembly of mono-cell 800 MHz Cu-cavity
Task 6: Assembly of mono-cell 800 MHz Nb-cavity
06/10/2016
M. Karppinen BE-RF-SRF

7. Manpower & Budget: Initial Guesstimate
06/10/2016
M. Karppinen BE-RF-SRF

8. Open questions Cut-off tube fabrication
Chemical processing of sub-assemblies and completed cavities
Continue with 704 MHz development or start 800 MHz (WU 5.3)
06/10/2016
M. Karppinen BE-RF-SRF

9. Next steps Confirm the tasks and deliverables Cost-estimate vs. budget
Visit to LNL Jan-17
Cost-estimate vs. budget
Establish project schedule and milestones
Finalise and approve WP 5 description
06/10/2016
M. Karppinen BE-RF-SRF