[Triumf-seminars] TRIUMF Accelerator Seminar today at 14:00

Wed Apr 25 05:00:03 PDT 2012

Date/Time: Wed 2012-04-25 at 14:00

Location:  ISAC II Conf. Rm.   

Speaker:   Aurelia Laxdal (TRIUMF)

Title:     HIGH POWER ALLISON SCANNER FOR ELECTRONS

Abstract: TRIUMF has designed, built and commissioned an “Allison” emittance scanner for electrons up to 300 keV in energy and average power up to 1 kW. Transverse phase space as large as 1600 &#960;µm can be measured with a resolution of 0.03 µm, in a high vacuum environment 10-9 Torr. This presentation discusses the engineering challenges of designing an Allison scanner for a high intensity electron beam, the components and materials used, as well as the technologies introduced. Also, it shows the experimental results of first tests at 60 keV with a thermionic electron gun, up to 660 W at 99% duty factor. Emittance contours were measured at high resolution for a variety of focusing conditions and intensities. The emittance measurements are consistent with independent measurements using a scintillator-type profile monitor, and a simple analytic model for a thermionic gun.

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