MOZRA  —  Accelerator Technology   (24-May-10   14:00—15:00)

Chair: K. Wittenburg, DESY, Hamburg

Paper Title Page
MOZRA01 High Current, High Brightness Electron Sources 45
 
  • F. Löhl
    CLASSE, Ithaca, New York
 
 

The development of high current, high brightness electron guns is critically important for FEL and ERL light source facilities. In this talk we will review the technical requirements of such projects and the status of on-going research throughout the community including results of emittance measurements and high current beam performance.

 

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MOZRA02 Trends in the Development of Insertion Devices for a Future Synchrotron Light Source 50
 
  • C.-S. Hwang, C. H. Chang
    NSRRC, Hsinchu
 
 

An in-vacuum undulator with a room-temperature permanent magnet and a superconducting wiggler has become a mature technology and is widely used; it can adopt a short-period length in a medium-energy facility to provide an enhanced photon flux in the hard x-ray region. A cryogenic permanent magnet is applicable for an in-vacuum undulator to enhance the remanence field (Br) and the coercivity force. In future, a cryogenic permanent-magnet undulator and a superconducting wiggler will become mainstream to fulfill a user's requirement of a discrete and a continuous spectrum, respectively, but superconducting technology with HTS wires will have the best potential for the development of insertion devices after the next decade. HTS bulk magnets with magnet flux density 17 T are applicable even for a superconducting undulator; such an undulator can decrease the period length to about 10 mm. A small magnet gap with an extremely- short-period length (about 5 mm) has been studied with a stacked-layer of thin HTS tapes for a superconducting undulator. This report is a review to describe the current and future developments of insertion devices for a medium-energy storage ring and FEL facility.

 

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