Prototype validation of device for bending and cutting coaxial cables for cryostat in quantum computing

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Insinööritieteiden korkeakoulu | Master's thesis
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Date

2021-06-14

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Mcode

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Master's Programme in Mechanical Engineering (MEC)

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en

Pages

63

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Abstract

This research's main focus is to help advance the manufacturing of quantum computers as a benefit to humanity. The road is long and complex but small steps throughout different people, universities and research centers is what this technology needs to achieve its full potential. Quantum computing is on the way to becoming one of the most influential technologies in human history. The ability to be able to simulate complex quantum systems will permit the acceleration in development of highly needed technologies in a wide variety of areas. Medicine, genetics, climate sciences, engineering, material sciences, etc. will see a great boost in discoveries and technological advances. For all of this to happen, research into the problems or limitations blocking further development need to be funded and pushed forward. The bottleneck in this advance will jump areas of science fairly quickly and constantly. The main areas required can be roughly divided in computer science, material sciences, manufacturing and R&D. This research focused on the manufacturing part, specifically in the superconductive cables used to communicate with the quantum chip. The automation of the manufacturing of these cables has been lagging behind since the required amounts have not yet been enough to justify the development of a machine to do it, until now. This research was done to validate and calibrate a prototype to measure, bend and cut the coaxial cables with high accuracy and repeatability. A process specific failure mode and effects analysis (PFMEA) was followed to identify the main failure areas which were tackled one by one. After this the validated prototype was used in pair with Go-NoGo gauges to validate the quality of the manufactured cable. The prototype has the required reliability and robustness to enter the production plant and start manufacturing the superconductive coaxial cables, which is an important demonstration of a well executed PFMEA.

Description

Supervisor

Kuosmanen, Petri

Thesis advisor

Tapanainen, Niko

Keywords

quantum computing, SCuNi, coaxial, thin cable bender, bending machine, cryostat

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https://urn.fi/URN:NBN:fi:aalto-202106207478

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