Effect of micro cutting force on fabrication of Au cone-wire target for fast ignition

The cone-wire target is an important sample target for researching collimation of hot electron current and has a significant function in fast ignition decomposition experiments. A new approach of fabricating seamless and adhesiveless Au cone-wire target with diamond turning is proposed. A micro cutting force model is established for diamond turning cone-wire target. The influences of micro cutting force on Au cone-wire target shaping are investigated with different cutting conditions based on the micro cutting force model. Cutting deformation of Au wires with different diameter are also studied with finite element method and experimental verification technique. Au wire regular deformation pattern under different micro cutting force conditions is obtained. It is shown that micro cutting force exerts a serious effect on fabrication deformation of cone-wire target with an approximated diameter of 10 m and has no significant effect on large diameter cone-wire target fabrication.