DOCUMENT METADATA
SLAC Publication: SLAC-PUB-14167
SLAC Release Date: August 26, 2010
Commissioning of the LHC Low Level RF System Remote Configuration Tools
Van Winkle, Daniel.
The LHC Low Level RF system (LLRF) is a complex
multi-loop system used to regulate the superconductive
cavity gap voltage as well as to reduce the impedance
presented by RF stations to the beam. The RF system can
have a profound impact on the stability of the beam; a
mis-configured RF system has the potential of causing
longitudinal instabilities, beam diffusion and beam loss.
To configure the RF station for operation, a set of
parameters in the LLRF multi-loop system have to be
defined. Initial... Show Full Abstract
The LHC Low Level RF system (LLRF) is a complex
multi-loop system used to regulate the superconductive
cavity gap voltage as well as to reduce the impedance
presented by RF stations to the beam. The RF system can
have a profound impact on the stability of the beam; a
mis-configured RF system has the potential of causing
longitudinal instabilities, beam diffusion and beam loss.
To configure the RF station for operation, a set of
parameters in the LLRF multi-loop system have to be
defined. Initial system commissioning as well as ongoing
operation requires a consistent method of computer based
remote measurement and model-based design of each RF
station feedback system.
This paper describes the suite of Matlab tools used for
configuring the LHC RF system during the start up in
Nov2009-Feb2010. We present a brief overview of the
tool, examples of commissioning results, and basics of the
model-based design algorithms. This work complements
our previous presentation [1], where the algorithms and
methodology followed in the tools were described. Show Partial Abstract
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