PAC2013 - List of Authors (Krasnykh, A.)

Paper	Title	Page
WEPHO18	S-Band Load Design for SLAC	975
	M.L. Neubauer, A. Dudas Muons, Inc, Illinois, USA A. Krasnykh SLAC, Menlo Park, California, USA
	Funding: Work supported by DoE SBIR/STTR grant DE-SC000-7560 S-Band vacuum loads at the SLAC linac are encountering operational problems, now that they have to operate under the stringent requirements of the LCLS: 50 MW peak power, 6 kW average power, and extremely tight phase stability for the linac. Failure mechanisms have been studied which suggest an RF surface breakdown of the 200 μm Kanthal layer. We propose a novel solution which incorporates mode conversion from TE10 in rectangular waveguide to TE01 in round waveguide. Lossy material will be placed in the round waveguide, and the selection of the TE01 mode minimizes the electric field normal to the surface of the lossy material. A novel lossy ceramic material and a mechanical system for incorporating it into an S-band dry load were designed and tested. The manufacturing of components with the lossy ceramic material will be studied to find the optimum design for low-cost manufacturing of the complete load.

Paper

Title

Page

S-Band Load Design for SLAC

975

M.L. Neubauer, A. Dudas
Muons, Inc, Illinois, USA
A. Krasnykh
SLAC, Menlo Park, California, USA

Funding: Work supported by DoE SBIR/STTR grant DE-SC000-7560
S-Band vacuum loads at the SLAC linac are encountering operational problems, now that they have to operate under the stringent requirements of the LCLS: 50 MW peak power, 6 kW average power, and extremely tight phase stability for the linac. Failure mechanisms have been studied which suggest an RF surface breakdown of the 200 μm Kanthal layer. We propose a novel solution which incorporates mode conversion from TE10 in rectangular waveguide to TE01 in round waveguide. Lossy material will be placed in the round waveguide, and the selection of the TE01 mode minimizes the electric field normal to the surface of the lossy material. A novel lossy ceramic material and a mechanical system for incorporating it into an S-band dry load were designed and tested. The manufacturing of components with the lossy ceramic material will be studied to find the optimum design for low-cost manufacturing of the complete load.