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Persistent URL http://purl.org/net/epubs/work/44014
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Record Id 44014
Title Phase-locking the photoinjector laser to the ERLP accelerator RF
Abstract The Energy Recovery Linac Prototype (ERLP) is a pulsed electron accelerator sited at the UK's STFC Daresbury Laboratory. Electron bunches are generated in a DC gun, compressed using an RF-buncher and accelerated in two 1.3 GHz superconducting (SC) modules, designated Booster and Linac. After acceleration the electrons are transported round a race-track shaped path and returned to the Linac module where energy is recovered from them before they are dumped. The transport path includes a bunch compressor (chicane) to increase the peak current followed by a wiggler in which cavity FEL action will take place. The machine has been built to allow accelerator development, particularly in support of the 4GLS proposal, and plans are also in place to exploit it as a photon and electron source in its own right. For the ERLP to operate effectively the electron bunches from the gun must be launched into the RF-powered elements (the buncher and the SC modules) with well-controlled timing relative to the RF phase. The electron source in the gun is a Cs:GaAs photocathode illuminated by optical pulses from a green (532 nm) drive laser system. The electron bunch timing depends directly on the timing of the laser pulses. The degree to which the laser pulse timing is controlled, i.e. its synchronisation with respect to the accelerator RF, is the subject of this report.
Organisation CCLRC , CLF , CLF-LSD , ASTeC , ASTeC-AP , CI
Keywords 4GLS , photoninjector , Physics , synchronisation , EUROFEL , ERLP , ALICE , laser , RF , timing
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Language English (EN)
Type Details URI(s) Local file(s) Year
Report 2007 EuroFEL Report on timing and synchronisation. 2007 EuroFEL Repo…on (Final) D3.16.pdf 2007