Compact Isotope Target Station for Remote Loading and Cooling
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Solution Overview
Problem
Conventional radioisotope target stations are limited in their ability to use multiple forms of target material, require significant personal exposure, and lack remote loading and safe containment capabilities, as well as insufficient production of desired radioisotopes.
Innovation Solution
A radioisotope target station with a loader mechanism, irradiation position, and ejection position, capable of securely handling target housings, allowing for orthogonal irradiation, remote loading, and safe containment, and featuring a cooling fluid source for thermal management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional target stations are used, then simple structure is maintained, but personal exposure increases and production capacity is limited
Solution Approach 1:
The target station is divided into distinct functional modules: a loader mechanism for target handling, an irradiation position with beam delivery, a cooling fluid source for thermal management, and an ejection position for spent target disposal. Each module operates independently but coordinates through the control system, enabling complex functionality while maintaining modular simplicity.
Solution Approach 2:
The target station is designed to accommodate multiple forms of target material and perform multiple functions including loading, irradiation, cooling, and ejection. The universal design allows the same station to produce various radioisotopes (e.g., Astatine-211) by simply changing the target material, eliminating the need for separate facilities for different production tasks.
2Object-affected harmful factors
If manual target handling is used, then device complexity is reduced, but personal exposure to radiation increases
Solution Approach 1:
The loader mechanism is designed to automatically load, position, and eject target housings without requiring manual intervention. The system uses mechanical automation to handle radioactive materials, with the loader mechanism physically transporting targets from storage to the irradiation position and removing spent targets, thereby eliminating personal exposure while maintaining operational capability.
Solution Approach 2:
The target housing serves as an intermediary container that holds the radioactive target material. This housing can be manually handled in a controlled environment and then transferred to the automated loader mechanism, allowing operators to work with materials in a safe state while the automated system handles the radioactive portions, thus reducing exposure.
3Temperature
If conventional target stations are used, then simple cooling is sufficient, but thermal management during irradiation becomes inadequate
Solution Approach 1:
The cooling system uses a fluid-based cooling source that circulates coolant through thermal contact with the target housing during irradiation. This hydraulic cooling approach efficiently removes heat generated by the beam, using fluid flow to transfer thermal energy from the target to a heat sink, thereby managing high temperatures without complex active cooling mechanisms.
4Productivity
If single target position is used, then device complexity is reduced, but production efficiency decreases
Solution Approach 1:
The loader mechanism is designed to be dynamically reconfigurable, moving between different positions (loading position, irradiation position, ejection position) as needed. This dynamic capability allows the system to optimize its configuration for each operational phase, improving production efficiency by enabling rapid target changes and continuous operation without requiring multiple fixed positions.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Reduces personal exposure, increases production of radioisotopes like Astatine-211, and enables safe handling and efficient processing through the use of a programmable logic controller.
Implementation Method 1
irradiating the target housing with the beam to produce an isotope
Implementation Method 2
cooling the target housing with the cooling fluid source fluidly coupled to the loader mechanism while the target housing is irradiated
Data Source
AI summary
A radioisotope target station, including a target housing. The target housing includes a target material, and a target backing material. The radioisotope target station includes a loader mechanism comprising at least one jaw configured to secure the target housing, a loading position comprising a magazine, wherein the magazine is configured to hold two or more target housings, an irradiation position comprising a beam, where the beam is configured to irradiate the target housing orthogonally, a cooling fluid source fluidly coupled to the loader mechanism, where the cooling fluid source is configured to cool the target housing as the target housing is irradiated, and an ejection position comprising an ejector and an ejection chute, where the ejector is configured to detach the target housing from the loader mechanism and the ejection chute is configured to receive the target housing when detached.