1 / 20

G. Riddone 13.05.2008

2 nd collaboration meeting on X-band Accelerator Structure Design and Test-Program Structure fabrication Test structure fabrication: procedures, documentation and status. G. Riddone 13.05.2008. Acknowledgements: C. Achard, S. Atieh, J. Kovermann, R. Zennaro, M. Taborelli. Content.

malini
Download Presentation

G. Riddone 13.05.2008

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 2nd collaboration meeting on X-band Accelerator Structure Design and Test-ProgramStructure fabricationTest structure fabrication: procedures, documentation and status G. Riddone 13.05.2008 Acknowledgements: C. Achard, S. Atieh, J. Kovermann, R. Zennaro, M. Taborelli

  2. Content • Introduction • Production cycle • QA system • Status of the production • Conclusions

  3. Introduction • Accelerating structures • 30 GHz (CERN): disks and quadrants • 11.4 GHz (CERN, KEK, SLAC): disks and quadrants • 12 GHz (CERN): disks • PETS • 30 GHz (CERN): quadrants • 11.4 GHz (SLAC): octants • 12 GHz (CERN): octants • rf components (CERN) • Hybrids - Splitters • Loads • Directional couplers • Attenuators – Phase shifters • Flanges

  4. Production cycle for acc. structures Production cycle: 24 weeks from RF design (included) to power test (excluded) Aim: 10 structures per year

  5. 3D Part, design parametrization introduced to minimize errors From rf design to the tech. specification rf design: 4 weeksmechanical design: 4 weeksTech. Spec. + bidding: 6 weeks

  6. QA system • We have to ensure that a physical components meet its requirements and perform satisfactorily in operation  At any moment we should be able to trace the history of the components • Engineering Data Management System used at CERN •  EDMS • for archiving and approval of documents • for information flow among different teams, including external suppliers/collaborators

  7. EDMS for RF structures Daily notification mail with new documents Traveller: document containing the history of the component

  8. Traveller (1)

  9. Traveller (2) X X X X X X X X X X

  10. Traveller (3) • In addition:Logbook for each structure • It has been defined: • - Who initiates the traveller • - For each step, role and responsibility • - Who closes the traveller and put it in EDMS • When a step is completed, the person in charge of the step, sends a mail to a defined list of people to launch the following step. • After each step the structure is put back in its box and stored in the dedicated cupboard in b169 • A new rf laboratory has been prepared for the structure inspection, assembly and tests X

  11. Production

  12. Ac. structure overview table (1) VG1 C10 CLIC G

  13. Ac. structure overview table (2) CLIC G

  14. Accelerating structures 11.4 GHz • CLIC vg1 quadrant damped • Iris shape accuracy • Specified: +/- 2.5 mm • Obtained: • 5, +10 mm • No tuning needed

  15. Accelerating structures 30 GHz 11.4 GHz 300 mm 150 mm Disk undamped Disk damped Disk structure (technology resumed in 2007 following change of frequency) Machining by diamond turning (+milling for damped structures) specified shape accuracy of +/-1 mm in the iris region

  16. PETS overview

  17. PETS production 11.4 GHz 275 mm

  18. PETS production 12 GHz 1 m Cooling circuit assembly jig Pieces for PETS assembly and supports

  19. rf components Dry (stainless steel) RF load RF and mechanical design, CERN Fabrication in CINEL, Italy and VDL, Holland Prototypes under completion - Series (x8) at CERN in July Directional couplers GYCOM, Russia First prototype in Dec 2007 - Series (x9) in June Attenuator/phase shifter Hybrids Scaled from 30 GHz CERN version. GYCOM Russia. First prototype in May - Second unit in Jul - Series (x3) in Aug RF and mechanical design, CERN Fabrication in CINEL, Italy First prototype in May - Series (x4) in June Splitter order under way

  20. Conclusions • A project-oriented production follow-up has been put into place aquality assurance system has been defined • All the relevant documents available in EDMS: exchange of information within CERN and with external collaborators • Detailed scheduled with clear milestones allow to follow the production and take preventive and correction actions • Production cycle for accelerating structure takes approximately 6 months • Several firms have been qualified for the manufacturing of the acc. structures, PETS and rf components. As much as possible splitting of contracts to minimize the risk. Collaboration with KEK And SLAC is a real benefit • First accelerating structure at 11.4 GHz arrived last week. Preliminary rf results are promising. To be tested at SLAC. • PETS bars and related components at 11.4 GHz under assembly and preparation.

More Related