A Low Charge Demonstration of Electron Pulse Compression for the CLIC RF Power Source

TL;DR

This paper demonstrates a low-charge test of an electron pulse compression scheme for the CLIC RF power source, involving modifications to CERN's injector complex and preliminary isochronicity measurements.

Contribution

It details the design and implementation of modifications to CERN's injector system to test a novel electron pulse compression scheme for the CLIC RF power source.

Findings

Successful modifications to CERN's injector complex

Preliminary isochronicity measurement results

Feasibility of low-charge pulse compression demonstrated

Abstract

The CLIC (Compact Linear Collider) RF power source is based on a new scheme of electron pulse compression and bunch frequency multiplication using injection by transverse RF deflectors into an isochronous ring. In this paper, we describe the modifications needed in the present LEP Pre-Injector (LPI) complex at CERN in order to perform a low-charge test of the scheme. The design of the injector (including the new thermionic gun), of the modified linac, of the matched injection line, and of the isochronous ring lattice, are presented. The results of preliminary isochronicity measurements made on the present installation are also discussed.