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29 March 2024 |
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High-power liquid-lithium jet target for neutron production | S. Halfon
; A. Arenshtam
; D. Kijel
; M. Paul
; D. Berkovits
; I. Eliyahu
; G. Feinberg
; M. Friedman
; N. Hazenshprung
; I. Mardor
; A. Nagler
; G. Shimel
; M. Tessler
; I. Silverman
; | Date: |
13 Nov 2013 | Abstract: | 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. | Source: | arXiv, 1311.3325 | Services: | Forum | Review | PDF | Favorites |
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