Used world-wide on all high-energy particle accelerators to observe very short beam pulses. Exceptional bandwidth and sensitivity are achieved by using amorphous cobalt- based alloy cores specially annealed in a magnetic field to obtain very high permeability and low loss at frequencies up to 2 GHz.
In-flange FCT is mounted in the beam line.
Short axial length, includes a ceramic gap vacuum-brazed to kovar.
Does not require bellows, wall current bypass nor electromagnetic shield.
Available from CF3“3/8 to CF8“
Bakeable up to 185°C
UHV compatible
In-air FCT installation, over the vacuum chamber Requires installation of a “gap” to prevent the wall current from flowing through the FCT aperture.
The gap can be a brazed ceramic ring or an organic material O-ring depending on the vacuum requirements.
Typical installations include bellows, a wall current bypass and an electromagnetic shield enclosing the FCT completely.
Environment
Temperature
In-air models In-flange models
Core saturation
Radiation damage
100°C (212°F) any time
100°C (212°F) any time
150°C (300°F) on option
185°C (365°F) on option
2 mT radial field 2A permanent DC current
Standard SMA PTFE: 1E3 Gray max
Rad-tolerant SMA PEEK: 6E7 Gray max 1E17 n/cm2 max
Specifications
Sensitivity
Bandwidth
Output
From 0.5V/A to 10V/A
Upper cutoff frequency up to 2GHz, depending on FCT sensor dimensions