Speaker
Stephen Benson
(Jefferson Lab)
Description
Though there are many applications of low energy positrons, many experiments are source limited. Using the LERF accelerator at the Thomas Jefferson National Accelerator Facility, it is possible to produce a high brightness source of very low-energy positrons. The accelerator requirements are well within the capabilities of the installed hardware. The accelerator can easily produce 50 kW of beam with a beam energy of up to 170 MeV. For these experiments, we only need run at up to 100 MeV. The gamma converter must be able to absorb the 50 kW of beam power that the linac delivers. At this low an energy the converter, though challenging, is possible. The transport of the low energy positrons from the production target to the next stage, where the energy is reduced even further, must have a very large acceptance to be able to efficiently transport the flux of positrons from the positron production target to the moderator. We propose to accomplish such a transport by means of a guiding solenoidal field with a novel endcap design. In this presentation, we will present the proposed schemes necessary to realize such a high brightness positron source.
Primary author
Stephen Benson
(Jefferson Lab)
Co-authors
Bogdan Wojtsekhowski
(Jefferson Lab)
Prof.
Branislav Vlahovic
(North Carolina Central University)
Dr
Serkan Golge
(NASA)
