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Persistent URL http://purl.org/net/epubs/work/65238
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Record Id 65238
Title A Transverse Deflecting Cavity for the Measurement of Short Low Energy Bunches at EBTF
Abstract The Electron Beam Test Facility (EBTF) at Daresbury Laboratory will deliver low energy (5/6 MeV) short bunches (down to 40fs RMS) to a number of industrial experimental stations and for fundamental scientific research. In order to measure the longitudinal profile of the bunch an S-band transverse deflecting cavity will be inserted into the beamline. A transverse kick of around 5 MV is required hence a 9-cell design has been chosen. The design of the transverse deflecting cavity has been influence by the competing demands of high RF efficiency and minimising the equal and opposite unwanted transverse kick at the entrance and exit of the cavity which causes the low energy electrons to be displaced while traversing the cavity. This has led to shortened end cells to minimise the kick applied at the entrance and exit to the cavity. In order to minimise the impact of the input coupler a dummy waveguide has been placed on the opposing side of the cavity to minimise the monopole component of the RF fields in the coupling cell. The coupler is placed on the central cell of the cavity to avoid exciting the nearby modes. Tracking of the beam is performed in GPT including space charge, due to the low energy of the electrons.
Organisation ASTeC , ASTeC-AP , ASTeC-RFD , TECH , CI , STFC
Keywords ASTeC 2012-2013 , Physics
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Language English (EN)
Type Details URI(s) Local file(s) Year
Paper In Conference Proceedings In 3rd International Particle Accelerator Conference (IPAC'12), New Orleans, Louisiana, USA, 20-25 May, 2012, (2012): 3335. thppc026.pdf 2012