1. Oh, you are a shrewd wiggler.

2. The toddler was a real wiggler on plane trips.

3. The alignment error and positioning precision of the wiggler are analyzed.

4. It is shown that a FEL operation is possible in this wiggler by using higher harmonics.

5. The results forms are similar to those in the linear polarized magnet wiggler.

6. This paper calculates PID gas load of SR from a 6 T superconducting Wiggler at HLS.

7. The transverse motions of electron with both self-field and high-order wiggler field are analyzed, with an investigation on the confinement condition of electrons.

8. The spontaneous emission spectrum and higher harmonic gain of a relativistic electron in a novel electrostatic wiggler are discussed.