%0 Journal Article
%T High-power liquid-lithium jet target for neutron production
%A S. Halfon
%A A. Arenshtam
%A D. Kijel
%A M. Paul
%A D. Berkovits
%A I. Eliyahu
%A G. Feinberg
%A M. Friedman
%A N. Hazenshprung
%A I. Mardor
%A A. Nagler
%A G. Shimel
%A M. Tessler
%A I. Silverman
%J Physics
%D 2013
%I arXiv
%R 10.1063/1.4847158
%X A compact Liquid-Lithium Target (LiLiT) was built and tested with a high-power electron gun at Soreq Nuclear Research Center. The lithium target, to be bombarded by the high-intensity proton beam of the Soreq Applied Research Accelerator Facility (SARAF), will constitute an intense source of neutrons produced by the 7Li(p,n)7Be reaction for nuclear astrophysics research and as a pilot setup for accelerator-based Boron Neutron Capture Therapy (BNCT). The liquid-lithium jet target acts both as neutron-producing target and beam dump by removing the beam thermal power (>5 kW, >1 MW/cm3) with fast transport. The target was designed based on a thermal model, accompanied by a detailed calculation of the 7Li(p,n) neutron yield, energy distribution and angular distribution. Liquid lithium is circulated through the target loop at ~200oC and generates a stable 1.5 mm-thick film flowing at a velocity up to 7 m/s onto a concave supporting wall. Electron beam irradiation demonstrated that the liquid-lithium target can dissipate electron power areal densities of > 4 kW/cm2 and volume power density of ~ 2 MW/cm3 at a lithium flow of ~4 m/s while maintaining stable temperature and vacuum conditions. The LiLiT setup is presently in online commissioning stage for high-intensity proton beam irradiation (1.91- 2.5 MeV, 1-2 mA) at SARAF.
%U http://arxiv.org/abs/1311.3325v2