Commissioning experience with the PEP-II low-level RF system
- 22 November 2002
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- Vol. 2, 2359-2361
- https://doi.org/10.1109/pac.1997.751208
Abstract
The low-level RF system for PEP-II is a modular design housed in a VXI environment and supported by EPICS. All signal processing and control is done at baseband using in-phase and quadrature (IQ) techniques. Remotely configurable RF feedback loops are used to control coupled-bunch instabilities driven by the accelerating mode of the RF cavities. A programmable DSP based feedback loop is implemented to control DC phase variations across the klystron and to adaptively cancel modulations caused by klystron power supply ripple at selected power line harmonics between 60 Hz and 10 kHz. The system contains a built-in baseband network analyzer which allows remote measurement of the RF feedback loop transfer functions and automated configuration of these loops. This paper presents observations and measured data from the system.Keywords
This publication has 5 references indexed in Scilit:
- Arc detection and interlock module for the PEP-II low level RF systemPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Gap Voltage Feed-Forward Module for PEP-II low level RF systemPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Operator interface for the PEP-II low level RF control systemPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Digital I/Q demodulatorPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Low level RF system design for the PEP-II B factoryPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002