• Open Access

X-band rf power production and deceleration in the two-beam test stand of the Compact Linear Collider test facility

E. Adli, R. Ruber, V. Ziemann, R. Corsini, A. Dubrovskiy, and I. Syratchev
Phys. Rev. ST Accel. Beams 14, 081001 – Published 22 August 2011

Abstract

We discuss X-band rf power production and deceleration in the two-beam test stand of the CLIC test facility at CERN. The rf power is extracted from an electron drive beam by a specially designed power extraction structure. In order to test the structures at high-power levels, part of the generated power is recirculated to an input port, thus allowing for increased deceleration and power levels within the structure. The degree of recirculation is controlled by a splitter and phase shifter. We present a model that describes the system and validate it with measurements over a wide range of parameters. Moreover, by correlating rf power measurements with the energy lost by the electron beam, as measured in a spectrometer placed after the power extraction structure, we are able to identify system parameters, including the form factor of the electron beam. The quality of the agreement between model and reality gives us confidence to extrapolate the results found in the present test facility towards the parameter regime of CLIC.

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  • Received 26 May 2011

DOI:https://doi.org/10.1103/PhysRevSTAB.14.081001

This article is available under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

Published by the American Physical Society

Authors & Affiliations

E. Adli*

  • Department of Physics, University of Oslo, 0316 Oslo, Norway

R. Ruber and V. Ziemann

  • Department of Physics and Astronomy, Uppsala University, 75121 Uppsala, Sweden

R. Corsini, A. Dubrovskiy, and I. Syratchev

  • CERN, CH 1211 Geneva 23, Switzerland

  • *Erik.Adli@fys.uio.no

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Vol. 14, Iss. 8 — August 2011

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