APPENDICES Table 3: Customer Needs (CN) & Engineering Requirements Absolute Tolerance Correlation Relative Customer Weight Engineering Technical Calc. (+/-) Testing Procedure Design Links to CN Technical Weight Requirements (1-10) Requirements Importance Weight (value) (1-5) Importance (values) Compact Spherical chamber Measuring Diameter Limiting the volume of the with diameter of volume of the F2:F19chamber 9 0.5 in. 4 36 4 0.09 0.06 about 6 inches will reduce the amount of time it takes to pump Quick Pumping to 10^-6 Timing the process Shortening the time it takes to Preparation 4 torr takes less than 7 days pump will increase efficiency 5 20 10 0.04 0.09 30 days Vapor Chamber can Measuring Will assure that the chamber is Removal withstand at least temperature and not compromised at high temps. 4 50°C 4 16 11 0.04 0.05 System 300°c inspecting chamber Alignment for Effective means of Seeing effectiveness Will allow the spot areas to be 7 4 28 9 0.07 0.05 Material z-axis translation and ease to use aligned Multiple Effective means of Seeing effectiveness Will allow us to change Samples x-y plane and ease to use materials without having to 2 3 6 16 0.02 0.01 Usable translation the vacuum Securing 7 Reliable and easy Material does not Will assure that the sample does 7 0.05 Material to use securing come loose and is not move 5 30 0.06 apparatus easy to use Ability to Add At least 4 ports Counting Will allow use of other Future 3 1 port mechanisms in the UHV 4 20 12 0.05 0.04 Accessories chamber Easy to Add Mounting ports Attach and Remove Will ensure instruments are not Accessories compatible with accessories likely to be damaged during 2 4 8 15 0.02 0.04 variety of installation accessories Precise and Ability to target Measuring spot size Will assure that we are Accurate 7 w/in tolerance 20 µm collecting protons of the 5 35 5 0.07 0.1 material Safe to Use Shielding for all Measure Radiation Needed to ensure no one is 10 4 40 3 0.10 0.09 apparatuses exposed radiation is not
APPENDICES Table 3: Customer Needs (CN) & Engineering Requirements Customer Requirements Weight (1-10) Engineering Requirements Tolerance (+/-) (value) Testing Procedure Design Links Correlation to CN (1-5) Absolute Technical Importance (values) Relative Technical Importance Calc. Weight Weight Compact 9 Spherical chamber with diameter of about 6 inches 0.5 in. Measuring Diameter Limiting the volume of the volume of the F2:F19chamber will reduce the amount of time it takes to pump 4 36 4 0.09 0.06 Quick Preparation 4 Pumping to 10^-6 torr takes less than 30 days 7 days Timing the process Shortening the time it takes to pump will increase efficiency 5 20 10 0.04 0.09 Vapor Removal System 4 Chamber can withstand at least 300°c 50°C Measuring temperature and inspecting chamber Will assure that the chamber is not compromised at high temps. 4 16 11 0.04 0.05 Alignment for Material 7 Effective means of z-axis translation Seeing effectiveness and ease to use Will allow the spot areas to be aligned 4 28 9 0.07 0.05 Multiple Samples Usable 2 Effective means of x-y plane translation Seeing effectiveness and ease to use Will allow us to change materials without having to the vacuum 3 6 16 0.02 0.01 Securing Material 7 Reliable and easy to use securing apparatus Material does not come loose and is easy to use Will assure that the sample does not move 5 30 7 0.06 0.05 Ability to Add Future Accessories 3 At least 4 ports 1 port Counting Will allow use of other mechanisms in the UHV chamber 4 20 12 0.05 0.04 Easy to Add Accessories 2 Mounting ports compatible with variety of accessories Attach and Remove accessories Will ensure instruments are not likely to be damaged during installation 4 8 15 0.02 0.04 Precise and Accurate 7 Ability to target w/in tolerance 20 µm Measuring spot size Will assure that we are collecting protons of the material 5 35 5 0.07 0.1 Safe to Use 10 Shielding for all apparatuses Measure Radiation Needed to ensure no one is exposed radiation is not 4 40 3 0.10 0.09
Final%20Design%20Report%2012-12-16.docx