FYSS6325 Cryogenics (5 cr)

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Study level:

Advanced studies

Grading scale:

0-5

Language:

English, Finnish

Responsible organisation:

Department of Physics

Curriculum periods:

2017-2018, 2018-2019, 2019-2020

Description

Content

Properties of cryoliquids; solid matter at low temperatures; thermal conductance and isolation; Helium-4 and closed cycle cryostats; Helium-3 cryostats; He3-He4 dilution refrigeration; Pomeranchuck cooling; adiabatic demagnetization; adiabatic nuclear demagnetization; temperature scales and fixed points; low temperature thermometry; cryogenic devices

Completion methods

Assignments, participants teach (presentation), project work, examination

Assessment details

To pass the course, students need to have at least the minimum score defined by the teacher for assessments (such as assignments, project work, participation, examination, total points). The course grade is divided into component parts (i.e. individual assessments) and each part is worth some percentage of the total grade (e.g. 30 % assignments, 10 % participation, 10 % project work, 50 % examination).

Learning outcomes

At the end of this course, students will be able to name the main characteristics of cryoliquids, tell about the principles of the properties of solid matter at low temperatures as well as about the behavior of thermal conductivity at low temperatures. Students will be able to describe the operational principles of He3 and He4 cryostats and the operational principle of He3-He4 dilution refrigerators. They are able to explain the idea behind Pomeranchuck cooling and the mechanisms of electronic and nuclear adiabatic demagnetization. They are able to define temperature scales and describe a few low-temperature thermometry techniques, examples of cryogenic devices, write a short description of one topic in cryogenics and give a seminar talk on one topic in cryogenics.

Additional information

Spring semester 1st period (tentatively), every three years; scheduled for academic year 2017-2018

Description of prerequisites

FYSA2001 Modern Physics, part A

Literature

F. Pobell: Matter and Methods at Low Temperatures 3rd Ed., Springer 2007, ISBN-13 978-3-540-46356-6; ISBN: 978-3-540-46356-6

Completion methods

Method 1

Select all marked parts

Parts of the completion methods

Unpublished assessment item