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The RAL Front End Test Stand. Alan Letchford. The RAL Front End Test Stand (FETS) is part of CCLRC’s contribution to generic high power accelerator R&D.
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The RAL Front End Test Stand. Alan Letchford
The RAL Front End Test Stand (FETS) is part of CCLRC’s contribution to generic high power accelerator R&D. Specifically the FETS will demonstrate some key technologies associated with the front end of the next generation of spallation sources, neutrino factory, waste transmuters, tritium production …
The beginnings of FETS were in the European Spallation Source (ESS) project which identified the front end and specifically the chopper as key R&D. CCLRC/RAL continued to support the chopper developments through HIPPI and the need for a facility for beam tests of the chopper became clear. FETS was born and the goals extended to demonstrating front end technology for a range of future HPPAs.
Although generic in nature FETS is currently being supported as part of the proton driver studies for the UK Neutrino Factory (UKNF) and a forms the basis for possible future linac upgrades to the ISIS facility. FETS is also directly applicable to future long and short pulse ESS scenarios.
The FETS is a collaborative effort between • CCLRC RAL ISIS • CCLRC ASTeC Intense Beams Group • Department of Physics, Imperial College London • Department of Physics, University of Warwick • University of the Basque Country, Spain
FETS main components: • High brightness H- ion source. • Magnetic Low Energy Beam Transport (LEBT). • High current, high duty factor Radio Frequency Quadrupole (RFQ). • Very high speed beam chopper. • Comprehensive diagnostics. Chopper
The FETS specification: 60 mA H- ion source 65 keV 3 solenoid magnetic LEBT 324 MHz, 3 MeV RFQ High speed beam chopper & MEBT Conventional and non-destructive diagnostics Up to 2 ms pulse length Up to 50 pps rep. rate ‘Perfect’ chopping
The FETS team John Back (Warwick) Aaron Cheng (Imperial) Mike Clarke-Gayther (ISIS/ASTeC) Adeline Daly (ISIS) Dan Faircloth (ISIS) Christoph Gabor (ASTeC) Simon Jolly (Imperial) Ajit Kurup (Imperial) David Lee (Imperial) Alan Letchford (ISIS) Ciprian Plostinar (ASTeC) Jürgen Pozimski (ASTeC/Imperial) Peter Savage (Imperial)