CERN Accelerating science

Article
Title	Design of a 300 GHz Broadband TWT Coupler and RF-Structure
Author(s)	Krawczyk, F L ; Sigler, F E
Affiliation	(LANL/LANSCE, Los Alamos, New Mexico LANL, Los Alamos, New Mexico JP Accelerator Works, Inc., 2245, Los Alamos, NM GA, Los Alamos MIT/PSFC, Cambridge, Massachusetts)
Publication	2004
In:	22nd International Linear Accelerator Conference, Lubeck, Germany, 16 - 20 Aug 2004, pp.794
Subject category	Accelerators and Storage Rings
Abstract	Recent LANL activities in millimeter wave structures focus on 94 and 300 GHz structures. They aim at power generation from low power (100–2000 W) with a round electron beam (120 kV, 0.1–1.0 A) to high power (2–100 kW) with a sheet beam structure (120 kV, 20 A). Applications cover basic research, radar and secure communications and remote sensing of biological and chemical agents. In this presentation the design and cold-test measurements of a 300 GHz RF-structure with a broadband (>6% bandwidth) power coupler are presented. The design choice of two input/output waveguides, a special coupling region and the structure parameters themselves are presented. As a benchmark also a scaled up version at 10 GHz was designed and measured. These results will also be presented.