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Proceedings Paper

TESLA cavity driving with FPGA controller: feed-forward and feed-back modes
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Paper Abstract

The digital control of the TESLA (TeV-Energy Superconducting Linear Accelerator) resonator is presented. The laboratory setup of the CHECHIA cavity in DESY-Hamburg has been driven by the FPGA (Field Programmable Gate Array) technology system. This experiment focused attention to the general recognition of the cavity features and projected control methods. The electrical model of the resonator is taken as a consideration origin. The calibration of the signal channel is considered as a key preparation for an efficient cavity driving. The identification of the resonator parameters is confirmed as a proper approach for the required performance: driving on resonance during filling and field stabilization during flattop time with reasonable power consumption. The feed-forward and feedback modes were applied successfully for the CHECHIA cavity driving. Representative results of experiments are presented for different levels of the cavity field gradient.

Paper Details

Date Published: 11 October 2005
PDF: 11 pages
Proc. SPIE 5948, Photonics Applications in Industry and Research IV, 59480E (11 October 2005); doi: 10.1117/12.620165
Show Author Affiliations
Tomasz Czarski, Warsaw Univ. of Technology (Poland)
Krzysztof Pozniak, Warsaw Univ. of Technology (Poland)
Ryszard Romaniuk, Warsaw Univ. of Technology (Poland)
Stefan Simrock, TESLA, DESY (Germany)

Published in SPIE Proceedings Vol. 5948:
Photonics Applications in Industry and Research IV
Ryszard S. Romaniuk; Stefan Simrock; Vladimir M. Lutkovski, Editor(s)

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