1. Measurements with Micromegas Detector Prototypes for the Atlas Myon System Anna Ravensburg and Pascal Grobecker CERN Internship 08.04. – 19.04.2013 http://www.atlas.ch/photos/muons-tgc.html

2. Micromegas 2

3. The ATLAS - Detector 3 *http://core.physicsinfo.co.uk/filestore/104/atlas.jpg Task: To build Myon-Detectors (blue) which work faster Time: About 5 years

4. Setup of a Particle Detector 4 + - + Argon Electric Field Particle - + -

5. Avalanche-Effect 5 + - + Argon Electric Field Particle - + - - +

6. Micro-Mesh Gaseous Detector 6 Changed from http://en.wikipedia.org/wiki/File:MMPrincipe.png

7. Problems at ATLAS with Micromegas 7

8. Dust between Mesh and Strips 8 Changed from http://en.wikipedia.org/wiki/File:MMPrincipe.png

9. Irragularities of the Electric Field 9

10. Our tasks 10

11. Building a Micromegas Detector 11 Gas in Gas out Preamplifier Fe55

12. Building a Setup for Measurements Oscilloscope To Power Supply To Amplifier 12

13. Building a Setup for Measurements A Strips: +534V B Drift: -300V 13

14. Our Measurements 14

15. Our Measurements 15 Fe55: radioactive source 6 keV Ar: Excitation

16. Peakposition Deviation from average 16

17. Building a Micromegas Detector 17 Gas in Gas out Preamplifier Fe55

18. Full Width at Half Maximum (FWHM) 18 Half Maximum FWHM

19. Gain Curve 19

20. Measurement of cosmic radiation 20

21. Setup 21 Scintillators Lead Micro- megas

22. Our Measurements 22 Fit Panel Console Data of a Micro- megas detector with fitting line

23. Comparision of different Detectors 23

24. Conclusion 24

25. Thank you for giving us the chance to come to CERN and have 12 great days! 25