CERN Accelerating science

Article
Title	Pill-Box Cavity BPM For TESLA Cryomodul
Author(s)	Sargsyan, V
Affiliation	(TU-Berlin, Technische Universität, Berlin, Germany)
Publication	2003
In:	6th European Workshop on Beam Diagnostics and Instrumentation for Particle Accelerators, Mainz, Germany, 5 - 7 May 2003, pp.172
Subject category	Accelerators and Storage Rings
Abstract	A new cavity BPM with 10 μm resolution is designed and fabricated to perform single bunch measurements at the TESLA linear collider. In order to have a low energy dissipation in the cryogenic supermodule, the inner surface of the cavity is copper plated. Cross-talk is minimised by a special polarisation design. The electronics, at 1.5 GHz, is a homodyne receiver normalised to the bunch charge. Its LO-signal for down-conversion is taken from the same cavity.