PPT Slide

Target options

Rod - water cooled

High specific activity

Easiest to exchange

Shock damage

Band-saw - radiation cooled

Medium specific activity

Difficult to exchange

Constrains geometry

Shock damage

Liquid metal jet (Hg)

Relatively low specific activity,

Can be distilled to remove spallation products

No exchange needed (except nozzle) but contamination of container may be an issue

Effect of B-field

Flowing metal powder (W)

Low effective (mean) density

Relatively low specific activity

But no way to separate spallation products

Cdj 04/2/99