Neumann, A.; Anders, W.; Dirsat, M.; Frahm, A.; Jankowiak, A.; Kamps, T.; Knobloch, J.; Kugeler, O.; Quast, T.; Rudolph, J.; Schenk, M.; Schuster, M.; Rao, T.; Smedley, J.; Sekutowicz, J.; Kneisel, P.; Nietubyc, R.; Will, I. : CW Superconducting RF Photoinjector Development for Energy Recovery Linacs. In: 25th International Linear Accelerator Conference, LINAC2010, September 12 - 17, 2010, Tsukuba, Japan, 2010, p. 998-1000
Abstract:
Abstract ERLs have the powerful potential to provide very high current beams with exceptional and tailored parameters for many applications, from next-generation light sources to electron coolers. However, the demands placed on the elec- tron source are severe. It must operate CW, generating a current of 100 mA or more with a normalized emittance of order 1 μm rad. Beyond these requirements, issues such as dark current and long-term reliability are critical to the suc- cess of ERL facilities. As part of the BERLinPro project, Helmholtz Zentrum Berlin (HZB) is developing a CW SRF photoinjector in three stages, the first of which is currently being installed at HZB’s HoBiCaT facility. It consists of an SRF-cavity with a Pb cathode and a superconducting solenoid. Subsequent development stages include the inte- gration of a high-quantum-efficiency cathode and RF com- ponents for high-current operation. This paper discusses the first stage towards an ERL-suitable SRF photoinjector, the present status of the facility and first cavity tests.