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Training

Wednesday 11th & Thursday 12th October 2017 | Ricoh Arena, Coventry

Introduction

Vacuum is a central commodity in the technology for manufacturing a host of products which are now part of everyday living, such as microelectronic and optoelectronic devices, TV screens, photovoltaic panels and pharmaceuticals, as well as in scientific research. Producing and maintaining a vacuum and knowing its properties therefore concerns a large number of people who work in these areas. Although these activities span a wide field there is a relatively small body of basic underlying knowledge that is common to all of them.

The purpose of these courses is to present this basic knowledge in a straightforward and accessible way. The principles and practice that are involved in creating and measuring a vacuum will be dealt with and illustrated by worked examples from various applications. Ultra-high vacuum, important in many applications, will be discussed only briefly in courses VTC1 and VTC2, however they will serve as a good introduction to the course “Clean Vacuum & UHV” (VTC3) which addresses the matter of UHV in more detail.

These courses are aimed at newcomers to the field, those who wish to refresh their knowledge, and those who wish to go further into UHV practicalities.

They will be appropriate for new graduate students in physics, chemistry and engineering for whom vacuum techniques will be a working tool. After attending any of these courses participants should be able to analyse the behaviour of their own vacuum systems with increased understanding, and have the basis for evaluating the effectiveness of proposed designs.

There are three specialist application courses: VTC4 on “Leak Detection”, VTC5 on “The Design and Fabrication of UHV Chambers” and VTC6 on “Introduction to Residual Gas Analysis (RGA)”. Places on each course are very limited, so you are encouraged to register early.

The material is presented in an informal/tutorial style with an effort to address participants’ needs. A copy of the Training Slides on a CD + a Certificate of Attendance will be provided.

Delegates may choose to attend more than one course, but it is not possible to attend all due to overlap.

VTC1 Vacuum - the Basic Principles

Time: 10:00 to 12:00  (running Wednesday)
The trainer is Dr Oleg Malyshev

This course will deal with the principles involved in creating and maintaining a vacuum. The various aspects of gas behaviour that are important for this purpose will be described, together with the characteristics of flowing gas and how they change as pressure falls. On the basis of this analysis flow can be specified quantitatively and performance predicted.

  • Schematic representation of a typical vacuum system
  • Specifying a vacuum – pressure and partial pressures
  • Air, water vapour and rarefied gas
  • The molecular description of a gas. Mean free path
  • Fluidic and molecular states of gas, Knudsen number
  • Gas flow – viscous and molecular
  • Specifying flow – throughput, pumping speed and conductance
  • Sources of gas in a vacuum vessel. Outgassing
  • The pumping process, pumping times and ultimate pressure

VTC2 Vacuum in Practice - Atmosphere to High Vacuum

Time: 14:00 to 16:00  (Course runs on Wednesday only)
The trainer for VTC2 is Dr Oleg Malyshev

The subject of this course is how vacuum is produced and measured in a few typical devices whose operation reflects the application of the principles described in the VTC1 course. A representative selection of simple systems will be described and analysed.

  • Pumps: working principles and operating range of oil-sealed rotary, dry scroll, turbo-molecular, cryogenic and ion pumps.
  • Pressure gauges: classification and operating range.  Working principles of Pirani, capacitance diaphragm and ionisation gauges.
  • Residual gas analysis. The quadrupole instrument.
  • Examples of systems at low and high vacuum.
  • Sources of further information.

Participants requiring an introduction to topics/devices not included in this list are invited to submit requests for the consideration of the organisers.

VTC3 Clean Vacuum and UHV

Time: 10:00 to 15:30  (running on Thursday – full day event with lunch break from 12:00 to 13:30)
The trainer is Dr Ron Reid

The course is primarily aimed those who need to use equipment operating at vacuum levels of 10-9 mbar or lower and is approached mainly from the physics aspects of vacuum science. Therefore, the course will emphasise the physical principles of equipment and processes.

There will be little mathematics or advanced physics used, so it will be suitable for people with an engineering or technical background. The topics to be covered will include:

  • a general introduction to vacuum and UHV in particular;
  • the measurement of total and partial pressures in UHV;
  • Outgassing and related phenomena;
  • processing; elements of system design and operation and quality assurance matters.

VTC4 An Introduction to Leak Detection

Time: 10:00 to 12:00  (running Thursday morning)
The trainer is Dr Graham Rogers (Leybold Vacuum Ltd)

This course discusses the various uses and ever increasing requirements for leak detection, describing and defining what a leak is and the methods of detection, with practical demonstrations of finding leaks using a helium leak detector.

Discussions will include, modes of operation, such as Vacuum Mode vs Sniff Mode; Integral and local leak detection methods; description of various types of leaks that could be encountered and also various applications for Helium leak detection.

Finally, with time permitting, getting some audience participation to find leaks on some components.

VTC5 The Design and Fabrication of UHV Chambers

Time: 14:00 to 16:00  (running Wednesday afternoon)
The trainers are Dr. Dominik Schwendt & Dr. Kai Sturm from the Pfeiffer Trinos organisation based in Germany.

This presentation gives an introduction to the basic requirements and properties of UHV chambers. The main focus will be the design and fabrication of chambers with regards to material choice and surface finish, together with a brief introduction to special-purpose solutions such as chamber cooling.

  • Chamber design
  • Fabrication techniques
  • Materials for UHV applications
  • Surface finishes
  • Measurement of UHV
  • Special Purpose / Application Specific solutions

VTC6 Introduction to Residual Gas Analysis (RGA)

Time: 16:30 to 18:30  (running late Wednesday afternoon)
The trainer is Dr Ron Reid

This short course will introduce participants to the principles of RGA as used to determine the partial pressures of gases in high ultrahigh vacuum (i.e. pressures below about 10-5 mbar.)

Concentrating on the most common form of instrument used for this technique — the small mass spectrometer — we will discuss the physics of ion sources, mass filters and detectors and how these affect the results obtained.

Finally, we will look at how a mass spectrum can be used to analyse the residual gases in the vacuum.

The course will be of interest to those science and engineering graduates or technicians who wish to gain an understand of this important technique. The level of physics involved will be elementary.

Training is Sponsored by
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Event Type: Training
Event Title: Various Training Courses as described
Organised By: VS Training Committee
Fee: £25 (VAT Exempt)
Requires Registration: Yes    (Use REGISTER NOW! link at top of this page)
Contact details: Vacuum Symposium UK Secretariat
E-mail: info@vacuum-uk.org
Tel: 01844 212202

Register now!

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