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@ARTICLE{Czarski:389616,
author = {Czarski, T. and Pozniak, K. T. and Romaniuk, Ryszard S. and
Simrock, S.},
title = {{C}avity parameters identification for {TESLA} control
system development},
journal = {Nuclear instruments $\&$ methods in physics research / A},
volume = {548},
number = {3},
issn = {0168-9002},
address = {Amsterdam},
publisher = {North-Holland Publ. Co.},
reportid = {PUBDB-2017-08883, DESY-TESLA-FEL-2005-08},
pages = {283 - 297},
year = {2005},
note = {Beschleuniger},
abstract = {Aim of the control system development for TESLA cavity is a
more efficient stabilization of the pulsed, accelerating EM
field inside resonator. Cavity parameters identification is
an essential task for the comprehensive control algorithm.
TESLA cavity simulator has been successfully implemented
using high-speed FPGA technology. Electromechanical model of
the cavity resonator includes Lorentz force detuning and
beam loading. The parameters identification is based on the
electrical model of the cavity. The model is represented by
state space equation for envelope of the cavity voltage
driven by current generator and beam loading. For a given
model structure, the over-determined matrix equation is
created covering long enough measurement range with the
solution according to the least-squares method. A low-degree
polynomial approximation is applied to estimate the
time-varying cavity detuning during the pulse. The
measurement channel distortion is considered, leading to the
external cavity model seen by the controller. The
comprehensive algorithm of the cavity parameters
identification was implemented in the Matlab system with
different modes of operation. Some experimental results were
presented for different cavity operational conditions. The
following considerations have lead to the synthesis of the
efficient algorithm for the cavity control system predicted
for the potential FPGA technology implementation.},
keywords = {electron positron: linear collider (INSPIRE) / linear
collider: proposed (INSPIRE) / cavity: superconductivity
(INSPIRE) / niobium (INSPIRE) / cavity: control system
(INSPIRE) / expansion: wavelet (INSPIRE) / DESY TESLA Linac
(INSPIRE)},
cin = {DESY(-2012)},
ddc = {530},
cid = {$I:(DE-H253)DESY_-2012_-20170516$},
pnm = {899 - ohne Topic (POF3-899)},
pid = {G:(DE-HGF)POF3-899},
experiment = {EXP:(DE-H253)TESLA-Test-Facility-20150101},
typ = {PUB:(DE-HGF)29 / PUB:(DE-HGF)16},
UT = {WOS:000231411400001},
doi = {10.1016/j.nima.2005.04.005},
url = {https://bib-pubdb1.desy.de/record/389616},
}