Vacuum Technology Resources - The Danielson Collection Articles

Philip Danielson donated a collection of articles on vacuum technology topics. Please see some of the articles below.

 A-F

• Anatomy of a Pumpdown
• Backstreaming Traps for Oil-Sealed Pumps
• Choosing the Right Vacuum Materials
• Conditioning Vacuum Chambers
• Contamination in Vacuum Systems: Sources and Remedies
• Creating a Vacuum
• Crossover Pressure and Cryopumping
• Desorbing Water in Vacuum Systems
• Diagnosing Vacuum Problems with Pumpdown and Rate-of-Rise Curves
• Difference Between Volume Flow and Mass Flow
• Dry Gas Techniques for Reducing Water Vapor

 G-L

• Gas Loads from Elastomer and Metal Seals
• Gas Loads and O-Rings
• Gas Loads in Vacuum Systems
• Gas Purge Solutions
• How to Assess Gas Loads in Vacuum System Design
• How to Choose a Diaphragm Pump
• How To Choose a Roughing/Backing Pump for the Turbo and Drag Family
• How to Match Pumping Speed to Gas Load
• How to Use Getters and Getter Pumps
• How To Use the Q=SP Fundamental Vacuum Relationship
• Initial Evacuation of Sealed-Off Devices
• Knowing Your Effective Pump Speed

M-R

• Making the Oil-Sealed vs Oil-Free Decision
• Matching Cryopumping Techniques to Application
• Matching Vacuum Pump to Process
• Molecular Flux Provides Process Understanding
• Nitpicking Your Vacuum System
• Oil-Sealed Pumps and Backstreaming
• Pumpdown Curves as a Diagnostic Tool
• Pumpdown Effects of Water Vapor Buildup
• Pumping Specific Gases in High Vacuum
• Pumping Speed in the Drydown Zone
• Pumping Water Vapor
• Rate-of-Rise Curves as a Diagnostic Tool
• Recent Advances in Vacuum Sealing Techniques

S-Z

• Sealing Materials Require a Careful Choice
• Solving Process Problems at the Molecular Flux Level
• Sources of Water Vapor in Vacuum Systems
• The Effects of Humidity on Vacuum Systems
• Thermal Conductivity Gauges
• Turbo, Drag and Turbo/Drag Pump Family
• Understanding Pressure and Measurement
• Understanding The Effects of Air Exposure
• Understanding Virtual Leaks
• Use and Misuse of O-Rings
• UV Conquers the Drydown Zone
• Vacuum Chamber: Volume or Surface Area?
• Vacuum Envelope Penetration
• Vacuum Requirements for Cryogenic Vessels
• Why Create a Vacuum?
• Will RGAs Replace Ion Gauges?