Rapid sample changing system used for material irradiation

Abstract

The invention relates to a rapid sample changing system used for material irradiation. The rapid sample changing system used for material irradiation comprises a system support platform, a three stagedifference suction rapid sample changing mechanism, an insert row box driving mechanism, a vacuum chamber, a sample delivery mechanism, and a programmable logic controller PLC control box; the lowerpart of the system support platform is provided with the three stage difference suction rapid sample changing mechanism, the middle part is provided with the insert row box driving mechanism, and theupper part is provided with the vacuum chamber; the front end of the vacuum chamber is connected with a Heavy Ion Research Facility in Lanzhou TR5 back beam transport pipeline, and the front end is designed to match a single particle effect irradiation target chamber; a scintillation detector driving mechanism, a high low temperature four-dimensional irradiation sample platform, and a transmissionshaft rising chamber are arranged on the upper part of the vacuum chamber, and the side surface is provided with a secondary electron detector driving mechanism, a vacuum gauge pipe, and a chamber internal operation door; the sample delivery mechanism is connected with the three stage difference suction rapid sample changing mechanism, and the insert row box driving mechanism respectively. The rapid sample changing system is capable of realizing rapid introduction and taking out of irradiation samples from atmosphere to vacuum environment with ensured irradiation chamber vacuum conditions.

Description

technical field [0001] The invention relates to the technical field of sample change in accelerator irradiation experiments, in particular to a rapid sample change system for material irradiation. Background technique [0002] Lanzhou Heavy Ion Accelerator is an important device in nuclear science-related research fields. It is not only used in the research of basic sciences such as nuclear physics and atomic physics, but also widely used in the fields of life science and material science. The beam time in each research direction is very limited, therefore, it is urgent to use the limited beam time to complete more research tasks. [0003] When the accelerator is used in material science, it is necessary to irradiate different materials (metals, semiconductors, polymers, etc.) to study the interaction process between ions and different materials and the characteristics of radiation damage. Effects of interference, material irradiation is usually carried out in a vacuum envi...

AI Technical Summary

Problems solved by technology

The sample change process of vacuum irradiation needs to go through the process of vacuum pumping and sample positioning, usually a vacuum chamber of about 50 liters, to 10 -5 The Pa high vacuum pumping process takes about 2 hours, which leads to the waste of precious accelerator beam time in the sample change process, especially for the irradiation of thin film materials used for nuclear track application research, the real irradiation time is only Taking seconds to minutes, and with hundreds or thousands of samples irradiated in an experiment, this type of work cannot be done without solving the problem of rapid sample change from atmosphere to vacuum

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