UK Neutrino Factory WP2 - Proton Driver Front End Progress Report. Alan Letchford. UKNF Meeting, CR12, R68, RAL. 4 th May 2005. H - Ion Source Progress D Faircloth et al, RAL. Separate Penning field Longer discharge pulse Increased output beam current. 1. Separate Penning Field.
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UK Neutrino Factory
WP2 - Proton Driver Front End
UKNF Meeting, CR12, R68, RAL. 4th May 2005
The discharge length has been increased by improving cooling.
1.75 msec achieved so far.
70mA beam current
Increasing the beam aperture size gives H- currents up to 70 mA.
Increased aperture has little effect on beam emittance:
0.6 mm aperture width0.8 mm aperture width
J Back, Warwick, J Pozimski, Imperial/RAL
A Kurup, Imperial, A Letchford, RAL
M Clarke-Gayther, RAL, G Bellodi, F Gerigk, Astec
The phase 2 fast pulser now meets the spec. for rise time, fall time, pulse duration …
… and pulse droop
Original chopper line
Revised chopper line
J Pozimski, Imperial/RAL, P Savage, Imperial
A full suite of diagnostics is being to maximise the experimental capabilities of the FETS.
In addition to the usual beam current and emittance measurements, more advanced techniques such as non-destructive laser/optical measurements and residual gas ion spectroscopy are being investigated.
Hugh Rojanski type electrostatic spectrometer
Engineering designs of an HR type electrostatic spectro-meter for the FETS
HR type spectrometer built at IAP Frankfurt