Prototype of the permanent magnet wiggler for accelerator Petra III

The article describes a prototype of the permanent magnet (PM) wiggler to reduce the emittance of the accelerator Petra III. The wiggle has the following parameters: the length is 4.04 m; the pole gap is 0.024 m and the maximal field is B=1.56 T; the wiggler has 20 periods with λ=0.2 m.