Karlsruhe 2011 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 82: Quellen / Injektoren

T 82.1: Vortrag

Montag, 28. März 2011, 16:45–17:00, 30.22: 020

Exploring the superconducting radio-frequency photoelectron injector concept for energy-recovery linacs — •Thorsten Kamps — Helmholtz-Zentrum Berlin, Berlin, Germany

Energy-recovery linacs (ERL) have the potential to provide high average current electron beams with exceptional beam parameters for many applications, from next-generation photon sources to electron coolers.

The requirements on the electron source driving an ERL are demanding. It must operate in continuous wave mode, generating an average current of 100 mA or more, with a normalized emittance of order 1 mm mrad and pulse length in the 10 ps range. Beyond these demands, issues such as dark current and high availability and reliability are of paramount importance.

HZB wants to explore the superconducting radio-frequency photoelectron injector (SRF photoinjector) concept to meet all these requirements. The approach is staged and embedded within the BERLinPro project, the first stage currently being commissioned at HZB. It consists of an SRF-cavity with a Pb cathode and a superconducting solenoid. Subsequent development stages include the integration of a high-quantum-efficiency cathode and RF components for high-current operation. This talk discusses the first stage towards an ERL-suitable SRF photoinjector, the present status of the facility and first beam tests.