CLIC Drive Beam Gun

Abstract

The Compact Linear Collider (CLIC) is a proposed future electron-positron collider, designed to perform collisions at energies from 0.5 to 5 TeV, with a nominal design optimized for 3 TeV (Dannheim, 2012). CLIC generates three beams: the drive beam, the main electron beam and the positron beam. The drive beam is a high current electron beam that is accelerated in an S-band linac and then decelerated in 12 GHz structures to generate the RF for accelerating the colliding main electron and positron beams. The drive beam employs a high current thermionic DC electron gun. This report explores the optimal anode-cathode geometry as well as analyzes the mechanical and electrical integrity of the gun structure designed by CERN.

Conceptual Design for CLIC Gun Pulser

“…The CLIC gun needs to generate a 143us long current pulse to feed the accelerator. A review of the CLIC gun design was performed by SLAC [1]. In this follow-on report, the key parameters of the grid pulser were derived from the review report.…”

“…Some parameters of the pulser are directly related to the CLIC Thermionic Gun Requirements. Therefore, Table 1 is cited below from the gun design report [1]. Parameters passed directly to the pulser are highlighted.…”

“…The electron gun design proposed in the report [1] is similar to CID gun in SLAC [2]. SLAC CID gun pulser can deliver up to 300V pulse into a 50 Ohm load for a maximum length of 5us.…”

“…Pulser current and floating deck configurationGrid interception current and delivered current are investigated in the gun design report.Figure 8in the report[1] is cited below.…”