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Persistent URL http://purl.org/net/epubs/work/48843
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Record Id 48843
Abstract This work forms part of the European Framework (EuroFEL) to carry out a design study for an injector for free electron laser. The objective of this task is to develop a superconducting gun capable of accelerating 100 mA to 10 MeV with sufficiently low emittance. The development work is initially based on the 3½ cell superconducting RF photocathode gun developed at Forschungszentrum Rossendorf (FZR). The FZR gun is designed for CW operation mode producing a 1 mA average current of 1 nC electron bunches accelerated up to energy of 9.5 MeV and is due to be installed at the ELBE superconducting electron linear accelerator [1]. The gun has a 3½ cell niobium cavity operating at 1.3 GHz. The cavity consists of 3 TESLA-type cells and a specially designed half-cell in which the photocathode will be placed. Typical ERL-based projects require ~100 mA average current, and therefore suitable upgrade paths are required. Simulations have been carried out to evaluate the design and to determine suitable ways to upgrade for higher current operation. In order to optimise beam transport and minimise beam emittance growth an alternative shape for part of the cavity around the cathode is proposed. Coupler issues have also been investigated. All the investigations that have identified possible solutions to higher current operation are discussed in this article.
Organisation CCLRC , ASTeC , ASTeC-RFD , CI
Keywords Physics
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Language English (EN)
Type Details URI(s) Local file(s) Year
Preprint CI Preprints Cockroft 06-62 2006. Submitted to: 10th European Particle Accelerator Conference (EPAC06), Edinburgh, UK, 26-30th June 2006 Cockcroft-06-62.pdf 2006