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SRF2003 Show Abstract


Title Operating experience with beta=1 high current accelerators
Type Talk operating experience
Abstract Using superconducting cavities proved to be a reliable and efficient way to provide RF power to high-current, high-energy beams.  Significant operating experience was accumulated in recent years in running superconducting cavities in electron-positron colliders CESR and KEKB.  Recent results are reviewed.  Successful operation of these machines as well as of accelerators of an older generation like LEP, TRISTAN and HERA made superconducting RF the technology of choice for many other high-current colliders (BEPCII, LHC) and light sources (CLS, DIAMOND, SOLEIL, TLS).  A full set of superconducting cavities for LHC has been already manufactured and tested.  The first cryomodule for SOLEIL was fabricated, tested on a test stand at CERN and recently was subjected to a beam test at ESRF.  The first CLS cryomodule has been commissioned without beam.  Results of those tests are discussed.  Another trend in recent years is to use beam-driven (passive) superconducting cavities for bunch length manipulation.  Harmonic cavities are commonly used for this purpose.  In the collider mode of operation bunch shortening enhances luminosity.  Recent experimental results with fundamental RF harmonic cavities at CESR-c are presented.  In the light source mode of operation bunch lengthening improves beam lifetime and raises coupled-bunch instability thresholds as it is shown by experience with third-harmonic cavities at SLS and ELETTRA.  BESSY-II plans to use a third-harmonic passive superconducting cavity for bunch lengthening as well.

List of authors...

Principle author first.

Last (Family) Name First Name (Initials only) Affiliation or Organization (abbreviations if possible)
Belomestnykh S Cornell



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