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Persistent URL http://purl.org/net/epubs/work/51318
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Record Id 51318
Title 3D Modeling of the ALICE Photoinjector Upgrade
Contributors
Abstract The injector for the ALICE machine (Accelerators and Lasers In Combined Experiments) at Daresbury Laboratory is based around a 350 kV DC photocathode electron gun. An upgrade is proposed to introduce a load-lock GaAs photocathode preparation facility to allow rapid transfer of photocathodes to the gun without breaking the vacuum system. In the current design this requires side-loading of the photocathodes into the cathode ball. An alternative is to relocate the ceramic insulator vertically which will allow back-loading and also back-illumination of the photocathodes. 3D electrostatic simulations of the gun chamber are presented for both options along with 3D beam dynamic simulations for an off-axis photocathode, introduced to increase photocathode lifetime by reducing damage by ion back-bombardment. Beam dynamic simulations are also presented for the entire injector beamline as well as for a proposed extension to the injector beamline to include a diagnostic section.
Organisation ASTeC , ASTeC-AP , CI , STFC
Keywords Physics , ASTeC 2008-2009
Funding Information
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Language English (EN)
Type Details URI(s) Local file(s) Year
Paper In Conference Proceedings Published by the AiP with the PESP08 submissions as part of the SPIN2008 proceedings AiP Conf. Proc 1149, pp1179-1183. Is in proceedings of: Polarised Electron Sources and Polarimetry, 2008 (PESP 2008), Jefferson Laboratory, Newport News, USA, 4-8 Oct 2008. PESP 038 McKenzie.pdf 2008
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