PAC2013 - List of Authors (Bluem, H.)

Paper	Title	Page
TUPSM04	High-Charge Femtosecond Electron Generations for Ultrafast, High-Brightness Electron Beam Applications	634
	J.H. Park, H. Bluem, J. Rathke, T. Schultheiss, A.M.M. Todd AES, Medford, NY, USA
	Funding: *This work was supported by the U.S. Department of Energy, under Contract No. DE-SC0009556. Generation and preservation of ultrafast, high-brightness electron beams is one of the major challenges in accelerator R&D for high-brightness beam application such as free electron laser (FEL) and ultrafast electron diffraction (UED). Transverse and longitudinal space charge forces play a key role in emittance dilution and bunch lengthening, respectively, for all high brightness beams. We present newly designed radial bunch compression in an X-band photocathode radio frequency electron gun in achieving a compact ultrafast, high-brightness source. By compensating the path length difference in an extremely high acceleration gradient cavity with a curved cathode, we numerically demonstrate the potential for achieving more than an order of magnitude increase in beam brightness over existing electron guns. The thermal dynamics study and mechanical conceptual design to pursue the mechanical reliability will also present.

Paper

Title

Page

High-Charge Femtosecond Electron Generations for Ultrafast, High-Brightness Electron Beam Applications

634

J.H. Park, H. Bluem, J. Rathke, T. Schultheiss, A.M.M. Todd
AES, Medford, NY, USA

Funding: *This work was supported by the U.S. Department of Energy, under Contract No. DE-SC0009556.
Generation and preservation of ultrafast, high-brightness electron beams is one of the major challenges in accelerator R&D for high-brightness beam application such as free electron laser (FEL) and ultrafast electron diffraction (UED). Transverse and longitudinal space charge forces play a key role in emittance dilution and bunch lengthening, respectively, for all high brightness beams. We present newly designed radial bunch compression in an X-band photocathode radio frequency electron gun in achieving a compact ultrafast, high-brightness source. By compensating the path length difference in an extremely high acceleration gradient cavity with a curved cathode, we numerically demonstrate the potential for achieving more than an order of magnitude increase in beam brightness over existing electron guns. The thermal dynamics study and mechanical conceptual design to pursue the mechanical reliability will also present.