公开(公告)号：US11145481B1

公开(公告)日：2021-10-12

申请号：US16846401

申请日：2020-04-13

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Shinya Hattori ,  Ryosuke Yabushita ,  Naofumi Kosugi

IPC: H01J35/06 ,  H01J35/14

Abstract: An X-ray generation apparatus includes an electron gun emitting an electron beam having a circular cross-sectional shape, a magnetic focusing lens located downstream of the electron gun and focusing the electron beam while rotating the electron beam around an axis along a first direction, a magnetic quadrupole lens located downstream of the magnetic focusing lens and deforming the cross-sectional shape of the electron beam into an elliptical shape having a major axis along a second direction orthogonal to the first direction and a minor axis along a third direction orthogonal to the first direction and the second direction, and a target located downstream of the magnetic quadrupole lens and emitting an X-ray in response to incidence of the electron beam.