Fusion reaction hot spot area proton imaging method, calibration device and experiment device

Abstract

The invention provides a fusion reaction hot spot area proton imaging method, a calibration device and an experiment device. The protons generated by a fusion reaction hot spot area are imaged by a minisize magnetic quadrupole lens made of a permanent magnet, and the hot spot compression state information can be obtained. The method includes four steps of the calibration of the proton imaging minisize magnetic quadrupole lens in the calibration device, the adjustment of the object distance and the image distance of the minisize magnetic quadrupole lens in the experiment device, equivalent optical lens collimation, and online experiment diagnosis. The fusion reaction hot spot area proton imaging method is suitable for the diagnosis of fusion reaction hot spot area shapes in laser driving inertial confinement fusion, plasma discharge neutron source, Z-pinch or other devices. The imaging method can perform direction imaging on proton sources without coding and decoding, and no digital noises are introduced. Compared with a coding imaging method, the fusion reaction hot spot area proton imaging method has a larger reception solid angle and can achieve the same spatial resolution under the condition of proton yield one or two orders of magnitude lower.

Description

technical field

[0001] The invention belongs to the field of fusion particle diagnosis and beam optics in nuclear energy science and technology, and specifically relates to a proton imaging method, a calibration device and an experimental device in a fusion reaction hot spot area. Background technique

[0002] In fusion reactions, the symmetry of implosion compression is the key factor for successful ignition. Many methods have been developed for the diagnosis of the symmetry of the implosion area, especially the hot spot area, including direct diagnosis methods and indirect diagnosis methods. Among them, the direct diagnosis method is to obtain the information of the implosion area by directly diagnosing the products of the implosion area through X-ray imaging, neutron penumbra imaging and proton encoding imaging; the indirect diagnosis method is to use externally generated beams, such as X-ray , laser accelerated proton beam, implosion reaction proton beam, the method of ...

Images