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FCC Week 2019

24โ€“28 Jun 2019
Crowne Plaza Brussels Le Palace
Europe/Zurich timezone

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Session

SRF

25 Jun 2019, 08:30
Crowne Plaza Brussels Le Palace

Crowne Plaza Brussels Le Palace

Rue Gineste 3, Brussels 1210, Belgium

Conveners

SRF: SC RF cavities and technologies (1)

  • Anne-Marie Valente (JLAB)

SRF: SC RF cavities and technologies (2)

  • Cristian Pira (LNL-INFN)

SRF: RF power sources & Cryomodules

  • Lek Len (DOE)

Presentation materials

There are no materials yet.

  1. 480. HOM damping design studies for FCC-ee cavities
    Shahnam Gorgi Zadeh (Rostock University)
    25/06/2019, 08:30
    Superconducting RF & associated technologies
    Presentation

    The present baseline of FCC-ee considers 400 MHz single-cell cavities for the Z-pole machine, 400 MHz four-cell cavities for the W and H modes of operation, complemented by 800 MHz five-cell cavities for the tt operation. In this presentation different higher order mode (HOM) damping schemes are compared for the four operating scenarios of FCC-ee. The longitudinal and transverse impedance of...

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  2. 470. Requirements for longitudinal HOM damping in FCC-hh
    Ivan Karpov (CERN)
    25/06/2019, 08:48
    Superconducting RF & associated technologies
    Presentation

    Longitudinal coupled-bunch instability (CBI) can be driven by not sufficiently damped high-order modes of rf cavities or/and other machine elements. To prevent them in hadron machines, where synchrotron radiation is weak, one has to rely on Landau damping. Unlike the case of accelerators with relatively low number of bunches, in which the instability thresholds can be obtained from...

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  3. 517. Possible Designs of HOM Couplers for Superconducting 400 MHz RF Cavities
    Nils Petry
    25/06/2019, 09:06
    Superconducting RF & associated technologies
    Presentation

    The Future Circular Collider (FCC) is one possible future successor of the Large Hadron Collider (LHC) at CERN. The proton-proton collider center-of-mass collision energy is set to 100 TeV with a beam current of 0.5 A. To achieve this energy a stable acceleration is critical and therefore higher order modes (HOM) need to be damped. HOM dampers, further characterized as couplers, need to...

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  4. 580. R&D of seamless elliptical cavities
    Cristian Pira (LNL-INFN)
    25/06/2019, 09:24
    Superconducting RF & associated technologies
    Presentation
  5. 659. Electrodeposition of copper for seamless cavity
    Guillaume Jonathan Rosaz (CERN)
    25/06/2019, 09:42
    Superconducting RF & associated technologies
    Presentation
  6. 581. NB film engineering with energetic condensation for tailored RF behavior
    Anne-Marie Valente-Feliciano (Jefferson Lab)
    25/06/2019, 10:30
    Superconducting RF & associated technologies
    Presentation
  7. 477. RF performances of superconducting coatings on copper for the FCC study
    Dr Marco Arzeo (CERN)
    25/06/2019, 10:48
    Superconducting RF & associated technologies
    Presentation

    The conceptual design report for the future circular collider (FCC) study indicated niobium on copper (Nb/Cu) as the technology of choice for the realization of superconducting radio frequency (SRF) accelerating cavities for the 400 MHz RF systems. This technology is well established at CERN and provides a significant reduction of the costs involved as compared to bulk Nb. Nevertheless, a...

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  8. 401. Development of a T_c test stand to analyze superconducting thin-film coatings
    Dorothea Fonnesu (CERN)
    25/06/2019, 11:06
    Superconducting RF & associated technologies
    Presentation

    The need for particle accelerators and circular colliders capable of reaching energies beyond the state of the art machines, such as the LHC, is resulting in extensive efforts on the development of the required technologies. Among the challenges, the development of new SRF cavities capable of providing higher accelerating fields is critical. To this end, among the several possibilities,...

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  9. 674. Characterization of a nobium thin film deposited on 6 Ghz SRF cavities
    Reza Valizadeh (STFC Daresbury Laboratory)
    25/06/2019, 11:24
    Superconducting RF & associated technologies
    Presentation

    Niobium thin film deposited on copper cavity has the potential to replace bulk niobium superconducting cavity in particle accelerators. Bulk niobium has a typical heat conductance of about 75 W/m.K at best, while for copper is as high as 300-2000 W/m.K and the cost of copper is a fraction of that of niobium. INFN Legnaro has been producing special seamless 6 GHz copper cavity from a single 2mm...

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  10. 684. FCC-ee ERL option for low power and/or high energy
    Maria Chamizo Llatas (Brookhaven National Laboratory (US))
    25/06/2019, 11:42
    Presentation
  11. 582. Active shielding for Cryomodules
    Anton Evgeniev Ivanov (CERN)
    25/06/2019, 13:30
    Superconducting RF & associated technologies
    Presentation
  12. 670. Test results and Operational experience of the High Power IOT development for ESS
    Morten Jensen (European Spallation Source)
    25/06/2019, 13:52
    Superconducting RF & associated technologies
    Presentation

    The European Spallation Source, currently under construction in Lund, Sweden launched a project to procure and test two MB-IOTs as technology demonstrators. The MB-IOTs were designed for pulsed operation at 1.2 MW, 704 MHz, 3.5 ms pulse width with a repetition rate of 14 Hz. This talk will summarise the outline design and specification of the two MB-IOTs delivered and will describe the test...

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  13. 584. High efficiency klystrons development at CERN
    Jinchi Cai (CERN)
    25/06/2019, 14:14
    Superconducting RF & associated technologies
    Presentation
  14. 585. Towards a high efficiency klystron for LHC
    Armel Beunas (THALES)
    25/06/2019, 14:36
    Superconducting RF & associated technologies
    Presentation
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