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07-FCT快束流传感器
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FCT

Fast Current Transformer

Most sensitive & fastest current transformer

Best non-destructive instrument to observe

pulsed or CW beams

Bandwidth

Up to 2 GHz

Rise time

< 200 ps

Application

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

50Ω terminated SMA jack connector

Datasheet

Downloads

FCT Datasheet
FCT User's Manual
Technical notes

Technical drawings

In-air
In-flange