Abstract
For the Compact Linear Collider project at CERN, the power for the main linacs is extracted from a drive beam generated from a high current electron source. The design of the electron source and its subsequent focusing channel has a great impact on the beam dynamic considerations of the drive beam. We report the design of a thermionic electron source and the subsequent focusing channels with the goal of production of a high quality beam with a very small emittance.
Highlights
For the Compact Linear Collider project at CERN, the power for the main linacs is extracted from a drive beam generated from a high current electron source
The compact Linear Collider (CLIC) project at CERN aims at building an electron-positron linear collider with a center of mass energy of 3 TeV [1]
We have reported the design of the electron source and the focusing channel of the CLIC drive beam injector
Summary
The compact Linear Collider (CLIC) project at CERN aims at building an electron-positron linear collider with a center of mass energy of 3 TeV [1]. There are two options for the drive beam injector: a high current thermionic gun with a sophisticated bunching system [3] or a high current radio frequency gun [4,5]. In the present work we plan to propose an analytical approach to first optimize the emittance out of the thermionic gun and its subsequent transport. We design the CLIC thermionic gun and its focusing channel with a significant decrease in the beam emittance generated from the gun and along the whole injector. We present a new analytical approach for the design of a low emittance thermionic gun and apply it for the CLIC drive beam injector. We conclude the paper with a short summary of the findings
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