In-Place Clamping Pin-Grid Array Socket for Atomtronic Vacuum Integrity
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Solution Overview
Problem
Atomtronic devices face challenges in maintaining vacuum integrity due to stress induced by pin deflection when establishing electrical connections, which can compromise the seal and affect the manipulation and sensing of atom-scale particles.
Innovation Solution
A compact socket design with a dual-cam camshaft that moves socket plates in opposite directions to clamp PGA pins without deflecting them, ensuring a secure and stress-free electrical connection within the vacuum environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a PGA is inserted into a socket to establish electrical connections, then electrical connectivity is achieved, but pin deflection and stress are induced that can compromise vacuum integrity
Solution Approach 1:
The socket incorporates a spring-loaded contact mechanism that dynamically adjusts to pin insertion. The spring element (144) compresses during insertion and maintains constant contact force, accommodating thermal expansion and contraction without inducing stress on the pins or compromising the vacuum seal.
Solution Approach 2:
The spring element (144) is pre-loaded to provide cushioning during pin insertion. This beforehand cushioning absorbs insertion forces and prevents stress transmission to the PGA pins, eliminating the harmful deflection stress that would otherwise compromise vacuum integrity.
2Adaptability or versatility
If connections are made through the vacuum boundary, then external instrumentation can interface with the vacuum interior, but vacuum compromise can occur at connection sites
Solution Approach 1:
The socket assembly acts as an intermediary component between the vacuum interior and external instrumentation. It provides a hermetic seal through the vacuum boundary while enabling electrical connections via the PGA interface, thus maintaining vacuum integrity while achieving instrumentation adaptability.
Solution Approach 2:
The socket assembly serves multiple functions: it provides a hermetic vacuum seal, establishes electrical connections through the PGA interface, and interfaces with external instrumentation. This multi-functionality resolves the contradiction by enabling adaptability without compromising vacuum reliability.
3Device complexity
If a single-cam camshaft is used to clamp the PGA, then the structure is simpler, but the pin deflection induces stress that can be relieved by package movement
Solution Approach 1:
The spring-loaded contact mechanism dynamically accommodates pin position variations during clamping. The spring element (144) absorbs clamping forces through compression, preventing stress transmission to the pins even when package movement is constrained, thus eliminating pin stress without requiring complex multi-cam mechanisms.
Data Source
AI summary
An atomtronic (e.g., ultra-cold-matter physics or ion-trap) system includes a vacuum-cell structure, an integrated-circuit package with a pin-grid array, and a socket for interfacing the integrated-circuit package with external control and monitoring systems. After pins of the pin-grid array are inserted into holes of plates in the socket, the plates are moved in opposite directions so that contacts within the holes clamp in place the pins, providing electrical connections. The in-place clamping avoids stress at the seal between the integrated circuit package and the vacuum cell structure; thus, stress that could otherwise compromise the vacuum seal is avoided so as to yield a more reliable vacuum.