Lund University                                                                                                                      Department of Physics
Division of Experimental High Energy Physics
Research         Staff         Address         Education         Events         Links

The Muon Lab
People Involved
Ph.D. Student
Vislavicius, Vytautas
General Information
The purpose of the muon lab is to measure the muon lifetime. The lab is based on a scintillator detector which detects cosmic-ray muons.

This lab is part of the course FYSC14, which is given twice a year for the 3rd year students. The purpose of the lab is to give the students an introduction to the analysis techniques of elementary particle physics experiments. The lab gives an (miniature) overview of the different fields of work at a high energy physics experiment. It addresses, how the theory can be studied by the experiment due to its phenomenological impact, the experimental setup and how it is read out, and finally the data analysis. In the analysis part the measurement is compared to the theoretical expectation and statistical and systematic errors are discussed.

Present Lab-Assistants:
Vislavicius, Vytautas (Room A406)

Any questions regarding lab send to:

Lab reports send to (as attached pdf-file):

The documentation:
Lab Manual
Question Sheet
Time Plan and Deadlines
Lab Report Deadline: 23:59:59 31 May 2016

Lab introduction:
presentation [odp][pdf]

A schedule will be put on the information board for you to choose your lab date. Please sign up for your preferred date.

Entrance to the lab through room L217

Lab period: 2016-04-28 to 2016-05-13. Lab starts at 9:15 (morning) and 13:15 (afternoon)

Data analysis: The analysis sessions will be held on May 16th & 18th. We start at 09:15 in the computer room.

Data Files:

Here you can find your data on the day of the analysis session.

2016-05-04, Window. The largest data set available (collected w/ machine next to the window)
2016-05-04, Door. The largest data set available (collected w/ machine next to the door)
2016-04-29, Window. For everyone that did the lab during that week on the setup near the window.
2016-04-29, Door. For everyone that did the lab during that week on the setup near the door.

backup data
If something went wrong with your data taking, you can use the backup data. The calibration values are 27, 51, 126, 245, 369, and 491 for times 1, 2, 5, 10, 15 and 20 microseconds.

Data Analysis
Analysis of the data collected during the lab can for example be performed using Matlab. Matlab help functions are good and fairly easy to use. Matlab is installed on all the "kurslab" computers under Windows.

NEW: A short note on data treatment, chi-square tests and some Matlab examples can be found here: Data treatment in the muonlab
    Some useful Matlab commands:

Chi^2 table Calculator
Lab Report
What you should put in your report:
  • An Introduction with the "theory" (the muon, cosmic rays, life time...)
  • Description of the experiment (principle, components, setup). Remember to hand in the question sheet as an appendix. Mark is appropriately, as "Appendix A".
  • Data analysis: method and discussion (error sources, data quality...)

  •     Last Updated: