Status Report of the FETS Photo Detachment Emittance Instrument at RAL

Christoph Gabor, Alan Letchford, Alessio Bosco, Gary Boorman, Stephen Gibson, P Savage, V. Scarpine

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The Front End Test Stand at the Rutherford Appleton Laboratory (RAL) is being developed to demonstrate a chopped H− beam of 60 mA at 3 MeV with 10% duty cycle. Due to the high beam power it is advisable to use the technique of photo detachment to avoid intrusive methods. It is intended to apply this technique to perform emittance measurements at the output of the RFQ at full power. This requires a dedicated diagnostics dipole with a special-made vacuum chamber giving room for the different beam paths necessary to install a particle detector to measure the produced neutrals. Other aspects are the beam transport and influence of the dipole and its fringe field to the beam transport Other considerations are the installation of the laser, the optics and the particle detector itself.
Original languageEnglish
Title of host publication4th International Particle Accelerator Conference
Subtitle of host publicationShanghai, China, 12-17 May 2013
Chapter06 Instrumentation, Controls, Feedback and Operational Aspects T03 Beam Diagnostics and Instrumentation
Number of pages3
ISBN (Electronic)978-3-95450-122-9
Publication statusPublished - 17 May 2013

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