Beam position monitoring in the 100-MHz to 500-MHz frequency range using the log-ratio technique
A logarithmic-ratio beam position monitor (BPM) circuit has been designed that operates directly from radio frequency- signals in the 100-MHz to 500-MHz frequency range. The circuit uses four logarithmic amplifiers, a pair for each channel. One amplifier per channel receives its signal input directly from a BPM electrode while the second amplifier receives the same signal attenuated by 7-dB. The two outputs of each channel are summed together and the composite video outputs are applied to a differencing amplifier. The net result is the logarithmic-ratio position measurement derived from the two input rf signals. Paralleling the pairs of outputs from the amplifiers provides measurement accuracy that is comparable to other circuit techniques used for position measurement.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOD; Department of Defense, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 6536228
- Report Number(s):
- LA-UR-93-1517; CONF-930511-6; ON: DE93012742
- Resource Relation:
- Conference: International particle accelerator conference, Washington, DC (United States), 17-20 May 1993
- Country of Publication:
- United States
- Language:
- English
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Log-ratio beam position monitoring at 425 MHz
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Related Subjects
BEAM POSITION
BEAM MONITORING
BEAM BUNCHING
BEAM MONITORS
MHZ RANGE 100-1000
POWER AMPLIFIERS
RF SYSTEMS
AMPLIFIERS
BEAM DYNAMICS
ELECTRONIC EQUIPMENT
EQUIPMENT
FREQUENCY RANGE
MEASURING INSTRUMENTS
MHZ RANGE
MONITORING
MONITORS
430303* - Particle Accelerators- Experimental Facilities & Equipment