Status Report of Sirius Delta Undulator

The first Delta undulator for Sirius, a 3 GeV
$4^\mathrm{th}$
generation synchrotron light source located in Brazil, is currently being built. It will be the first undulator of this type to be used in a storage ring based light source. The undulator has a 1.2 m long pure permanent magnet structure with 21 periods of 52.5 mm, a 13.6 mm fixed gap and four magneticarrays that can be moved in the longitudinal direction to provide full polarization control. This paper presents an overview of the Delta undulator project regarding its design, construction, measurements and field correction methods.