Radial electric field 3D modeling for wire arrays driving dynamic hohlraums on Z.

Mock, Raymond Cecil

Sandia National Laboratories

关键词: Wires;    Simulation And Modeling;    Cathodes;    Accelerators Z-Accelerator.;    Anodes;   

DOI  :  10.2172/909913
RP-ID  :  SAND2007-3930
RP-ID  :  AC04-94AL85000
RP-ID  :  909913

美国|英语

来源: UNT Digital Library

【 摘 要 】

The anode-cathode structure of the Z-machine wire array results in a higher negative radial electric field (Er) on the wires near the cathode relative to the anode. The magnitude of this field has been shown to anti-correlate with the axial radiation top/bottom symmetry in the DH (Dynamic Hohlraum). Using 3D modeling, the structure of this field is revealed for different wire-array configurations and for progressive mechanical alterations, providing insight for minimizing the negative Er on the wire array in the anode-to-cathode region of the DH. Also, the 3D model is compared to Sasorov's approximation, which describes Er at the surface of the wire in terms of wire-array parameters.