||Thomas Jefferson National Accelerator
Facility (Jefferson Lab) in Newport News Virginia, USA, is fabricating
superconducting accelerator modules for the Spallation Neutron Source
(SNS) project, currently under construction in Oak Ridge, Tennessee.
This paper outlines the production requirements and gives an update on
the current status of the production of these modules. The paper also
discusses the problems encountered in production to-date, vertical and
horizontal RF test results on cavities and the status of the
electropolish program at Jefferson Lab.