Speaker
Description
High current, long pulse H- beams are required for future accelerator applications, such as the Muon Collider or ESS Neutrino Super Beam where the ISIS 2X Penning ion source is a contender. The 2X source has demonstrated 75mA H- beam, 2ms pulse length, at 50Hz repetition rate on a dedicated test stand, and up to 150mA current at shorter pulse length. However, efficient transport of the beam from the source into the low energy beam transport (LEBT) and into an RFQ accelerator has yet to be developed. This work presents an IBSIMU-based simulation study and mechanical design of the 2X ion source beam extraction and transport focussing of a 140mA H- beam into the beamline of the Front End Test Stand (FETS) at ISIS. The extraction system design, based on two elliptical einzel lenses focussing the asymmetric beam, maintains compatibility with the existing ISIS 1X Penning ion source mechanical and beam parameters, allowing FETS to operate with either ion source.
| Email address | dean.morris@stfc.ac.uk |
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| Visitor's Visa | no |
| Classification | Beam formation and low energy transport |