Abstract
We report the results of a low-latency beam phase feed-forward system built to stabilize the arrival time of a relativistic electron beam. The system was operated at the Compact Linear Collider (CLIC) Test Facility (CTF3) at CERN where the beam arrival time was stabilized to approximately 50 fs. The system latency was 350 ns and the correction bandwidth >23 MHz. The system meets the requirements for CLIC.
Highlights
High-energy linear electron-positron colliders have been proposed as next-generation particle accelerators for exploring the subatomic world with increased precision
We report the results of a low-latency beam phase feed-forward system built to stabilize the arrival time of a relativistic electron beam
The system was operated at the Compact Linear Collider (CLIC) Test Facility (CTF3) at CERN where the beam arrival time was stabilized to approximately 50 fs
Summary
The monitor resolution of 0.12° limits the maximum upstreamdownstream phase correlation to 98% in typical conditions, and places a theoretical limit of 0.17° on the measurable corrected downstream phase jitter. Approximately a 440 ns portion of the pulse is within the Æ6° dynamic range of the PFF system, and can be corrected to zero nominal phase This time duration for the full correction exceeds the CLIC drive-beam pulse length of 240 ns and in any case the CLIC design avoids such a large phase sag [2].
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