DEPARTAMENTO DE FÍSICA

 

Physics and Technology of Vacuum - EF+AIE

Ano letivo: 2016-2017
Specification sheet

Specific details
course codecycle os studiesacademic semestercredits ECTSteaching language
2003077116pt *)

*) N.B.  if there are students who do not speak Portuguese the language is English.

Learning goals
This course aims to provide students with a broad knowledge in physics and technology of vacuum and cryogenics and allow a first contact and experience with different vacuum systems, so that students can, in future operate, acquire, assemble and maintain these kind of systems. Rather than providing a detailed training on fundamental physical processes involved, it is intended to contribute to an essentially practical and technological training in the operation and selection of different vacuum equipment and identifying the limitations that can be found in a given system.
Syllabus
Part I - FUNDAMENTAL PRINCIPLES OF PHYSICS AND TECHNOLOGY OF THE VACUUM AND CRYOGENICS.
1. Introduction.
2. The properties of gases.
3. Central vacuum system.
4. Real vacuum system.
Part II - PRODUCTION AND MEASUREMENT OF VACUUM AND CRYOGENICS.
5. Production of vacuum.
6. Vacuum measurement.
7. Leak detection.
8. Residual gas analyzer / mass spectrometers.
9. Comparative analysis of the costs of a vacuum system.
Part III - Practical training.
1. Production of vacuum.
2. Vacuum measurement.
3. Maintenance of a high-vacuum system.
4. Practical work with presentation of report.
Prerequisites
Generic skills to reach
. Competence in organization and planning;
. Competence to solve problems;
. Capacity of decision;
. Competence in autonomous learning;
. Adaptability to new situations;
. Competence in working in interdisciplinary teams;
. Critical thinking;
. Competence to communicate with people who are not experts in the field;
. Creativity;
. Competence in applying theoretical knowledge in practice;
(by decreasing order of importance)
Teaching hours per semester
lectures30
theory-practical classes4
laboratory classes26
fieldwork4
total of teaching hours64

Assessment
Laboratory or field work40 %
Exam60 %

Bibliography of reference
A Users Guide to Vacuum Technology, J.F. OHanlon (IBM Thomas J. Watson Research Center), Wiley-Interscience publication, John Wiley & Sons, Inc., New York, 1980, ISBN 0-471-01624-1

Tecnologia do Vácuo, A.M.C. Moutinho, M.E.F. Silva e M. Áurea Cunha, Universidade Nova de Lisboa, Faculdade de Ciências e Tecnologia, Lisboa, 1980.

Ultrahigh Vacuum Practice, G.F. Weston (Philips Research Laboratories), Butterworths & Co., London, 1985, ISBN: 0408014857.
Teaching method
The fundamentals behind the diagrams and drawings are discussed in lectures. Whenever possible use is made to the presentation of theoretical and practical examples for better understanding by students.
Some practical classes have a demonstration purpose, so that students make contact with the operation of the various vacuum systems.
During the laboratory sessions the students are supposed to operate the vacuum systems independently, after a briefing concerning the procedures and the aims of the proposed work.
Resources used
Laboratório com sistemas experimentais de alto vácuo baseados em bombas difusoras (Bomba difusora, bomba mecânica, medidor de baixo vácuo e respectivo controlador, medidor de alto vácuo e respectivo controlador, válvula de alto vácuo, válvulas de vácuo, válvula de agulha)
Utilização/demonstração de equipamento avançado de vácuo existente nos diferentes grupos de investigação do Departamento de Física: