2010  SHORT  COURSES  

      Mid - Year  Courses  	 	

Other  VSA  courses  and  IN-SERVICE  courses  can  be  arranged  by  negotiation**

COURSE	WHEN	WHERE	COST
Pumping Systems	29 June (Tues)	Melbourne (VU)	$300*
Leak Detection	30 June (Wed)	Melbourne (VU)	$300*
Vacuum Technology	29-30 June (Tues-Wed)	Melbourne (VU)	$480*
Thin Film Deposition	1 July (Thurs)	Melbourne (VU)	$300*
Vacuum Technology	6-7 July (Tues-Wed)	Sydney (UNSW)	$480*
Vacuum Technology	20-21 July (Tues-Wed)	Brisbane (UQ)	$480*

FOR WHOM	RESEARCHERS seeking a concise overview of the basics of vacuum technology TECHNICIANS maintaining vacuum systems eg. electron microscopes, surface science equipment, coaters, mass spectrometers ENGINEERS working in projects involving vacuum CHEMISTS using vacuum systems INDUSTRIAL STAFF in freeze drying, semi-conductor manufacture,vacuum moulding, packaging, suction processes etc. ACADEMICS introducing vacuum science courses WORKSHOP STAFF constructing vacuum equipment SALES STAFF dealing with vacuum equipment
RATES*	Member discounts. Discounts for groups ( > 2), Students (post & under graduate). Ray's List - Staff of companies listed
INFO**	Email course co-ordinator: kevin.lawlor@bigpond.com

 

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Registration for Mid-Year Courses 2010

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VACUUM TECHNOLOGY

Complete Course 2 days - Comprehensive set of notes

Fundamental Theory

Uses of vacuum, Degees of vacuum, Basic concepts, Density, Pressure at a depth in fluid, Original unit of pressure 'torr', Barometer, Atmospheric Pressure, Alternative pressure units, Pascal's principle, Direction of gas flow, Quantity of gas, Ideal gas laws, Partial pressure, Saturation vapour pressure, Gas flow rates. Gas laws from kinetic theory, Boltzman's constant, Thermal speeds of gases, Mean free parth, Types of gas flow, Knudsen Number, Molecular flux, Diffusion of gases, Perfect vacuum system, Limitations on ultimate pressure, Conductance formulae, Conductance effect on pump speed, Combined conductance, Aperture conductance, Equation for limiting effect of conductance. Exercises relating to the above topics.

Pumps and Systems

Operating principle of Rotary Pumps, Limitations of rotary pumps, Use of Two Stage pumping and Gas ballast, Effects of humidity, Precautions and good vacuum practice. Operating principle of Diffusion Pumps, Critical forepressure and inlet pressure, Limitations to base pressure, Backstreaming and Backmigration, Use of baffles and traps, Fluids, Matching backing pump, Small system operation. Operating principle of Turbomolecular Pumps, Design parmaeters , Matching forepumps, Compression ratio considerations, System operation, Molecular Drag principle, Hybrid molecular pumps. Operating principle of Cryopumps, Cryogenic processes, Pump configuration, Gas accumulation units, Adsorption isotherms, pump speeds and capacities, Regeneration, Cryopump system operation

Pressure Measurement

Precision, Sensitivity, Linearity, Resolution and Calibration, Uncertaintiy, Ranges of gauges, Direct measurement pressure gauges, U-tube Manometer, McLeod gauge, Bourdon gauge Diaphragm gauges - Mechanical linkage type, Strain gauge type, Capsule type, Capacitance Manometer gauge-various designs, Temperature effects on accuracy, Pressure ranges and accuracies. Indirect pressure measurement gauges, Thermal Conductivity gauges - Pirani gauge, Thermistor gauge , Thermocouple gauge, Calibration of thermal gauges. Ionization gauges, Principle of ionization, Discharge tube, Hot filament gauge,Bayard-Alpert type gauge, Errors in ion gauges, Cold cathode Penning gauge, Range, limitations and features of Penning gauge, Exercises on above topics.

Materials and Leak Detection

Typical outgassing rates of materials, Effectiveness of bake-out, Permeation considerations, Vapour pressures, Cleaning of materials, Distinguishing between Real and Virtual Leaks, Leak rate specification, distribution of leaks by size, Leak rate tolerance, Pump speeds to overcome leak rates, Response times, Types of tracer gases, Standard leaks, Calibration of leaks, Tracer-probe and detector-probe techniques, Plant and component testing. Types of detectors, Spark coil, Dye penetrant, Thermal leak detectors, Ionization type detectors - ion gauge, Magnetic deflection and Quadrupole MSLD's, Use of Residual Gas Analysers as leak detectors, Dedicated mass spectrometers Conventional use, Contra-flow method, summary of methods, Safety precautions.

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THIN FILM DEPOSITION TECHNIQUES

Course (1 day) - Comprehensive set of notes

Basic coverage of vacuum fundamentals relating to the operation of pumping stations.Principles and practical requiremnts of resistance, electron beam and sputter deposition processes. Monitoring techniques and typical applications.Design theory together with an example of computer techniques for rapid performance calculations. Examples of reflection and transmission coatings,

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PUMPING SYSTEMS

Course (1 day) - Comprehensive set of notes

Operating principles of a wide range of vacuum pumps used in laboratories, research and industry. The advantages and limitations of the pumps used need to be matched with the pressure range and requirements of each application. Several computer simulations of operating procedures are demonstrated.
Rotary Pumps Liquid Ring & Roots Booster Pumps Diffusion Pumps Turbomolecular & Molecular Drag Pumps Cryopumps Sublimination & Sputter-Ion Pump

 

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LEAK DETECTION

Course (1 day) - Comprehensive set of notes

Behaviour of materials under vacuum with outgassing rates for common materials. Effects of permeation and saturation vapour pressures on gas loads. Procedures for distinguishing between real and virtual leaks. Types of detectors and practical techniques for testing components and systems. Calibration techniques. Special attention is given to the use of mass spectrometer leak detectors.
Leak Rate units - standard leaks. Tolerable leak rates Response times Use of gauges & RGA's Types of detectors Computer simulation of detection techniques

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SURFACE SCIENCE TECHNIQUES

Course (1 day) - Comprehensive set of notes

Primarily for scientists, engineers and those who want to know more about surface analysis methods for practical problem solving. The course covers the capabilities and limitations of common surface analysis techniques. The emphaisis is on the concepts and principles of each technique.
Auger Electron Spectroscopy (AES) X-ray Photo-electron spectroscopy (XPS) Low energy Ion Scattering Spectroscopy (ISS) Rutherford Backscattering Spectroscopy (RBS) Secondary Ion Mass Spectroscopy (SIMS)

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FREEZE DRYING FUNDAMENTALS

Course (1 day) - Comprehensive set of notes

A means of achieving the dry state by freezing a wet substance and evaporating the resultant ice. The purpose is to minimize the changes in the properties of the substance whilst improving stability at room temperature. The result is a porous cake that can be packaged away from moisure or oxygen. This can be stored away for months, years and reconstituted by addition of cold sterile water with restoration of original properties. World wide transportation costs are minimized. The alternative is continuous refrigeration which can be expensaive, risky especially long term.

Basic vacuum theory relating to equipment Pre-freezing - often frozen inside a cabinet of shelves inside the feeze drier Primary Drying - by sublimination until the ice has disappeared. Some moisture remains"bound" Secondary Drying - desorption of moisture after primary drying completed

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