2018 High Power Targetry Workshop

High-power converters for RIB production

5 Jun 2018, 13:50

20m

1200 FRIB Bldg

Oral 4-Target Design, Analysis, Validation of Concepts Session 4-Target Design, Analysis, Validation of Concepts

Speaker

Mr Luca Egoriti (TRIUMF)

Description

TRIUMF is developing two target assemblies for radioisotope production based on the conversion of primary charged particle beams into neutral particle fluxes, which consequently induce fission in a uranium carbide (UCx) target. One is a proton-to-neutron converter made out of a 2 cm thick tungsten core clamped by copper brackets to dissipate up to 7.5 kW deposited by a 500 MeV, 100 uA proton beam. The high-energy isotropic neutrons will then induce cold fission in an annular UCx target material upstream of the converter. The other is an electron-to-gamma converter made out of a thin tantalum layer deposited on an aluminum backing. A 35 MeV electron beam of up to 100 kW will impinge on the tantalum surface and produce a gamma-ray flux, principally in the forward direction of a downstream UCx target. This contribution focuses on some of the design challenges resulting from the extreme conditions in terms of power density, temperature and radiation.