Design of 10‐T superconducting wiggler for angiography

The design of a 10‐T superconducting wiggler as a synchrotron radiation source for angiography has been carried out to be installed in an 800‐MeV electron storage ring, TERAS, at Electrotechnical Laboratory (ETL). Synchrotron radiation generated by the wiggler has a critical photon energy of 4.47 keV and the radiation spectrum identical to that from a 2.5‐GeV storage ring with a bending radius of 8.3 m. The magnet of the wiggler consists of three pairs of iron‐cored superconducting coils designed to provide a peak field of 10.5 T on the beam trajectory. The effect of the wiggler on the storage ring has been investigated and a pair of quadrupole doublets on both sides of the wiggler can compensate a large deviation of the betatron tune.