Measurements with Micromegas Detector Prototypes for the Atlas Myon System Anna Ravensburg and Pascal Grobecker CERN Internship 08.04. – 19.04.2013

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Presentation transcript:

Measurements with Micromegas Detector Prototypes for the Atlas Myon System Anna Ravensburg and Pascal Grobecker CERN Internship –

Micromegas 2

The ATLAS - Detector 3 * Task: To build Myon-Detectors (blue) which work faster Time: About 5 years

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

Avalanche-Effect Argon Electric Field Particle

Micro-Mesh Gaseous Detector 6 Changed from

Problems at ATLAS with Micromegas 7

Dust between Mesh and Strips 8 Changed from

Irragularities of the Electric Field 9

Our tasks 10

Building a Micromegas Detector 11 Gas in Gas out Preamplifier Fe55

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

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

Our Measurements 14

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

Peakposition Deviation from average 16

Building a Micromegas Detector 17 Gas in Gas out Preamplifier Fe55

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

Gain Curve 19

Measurement of cosmic radiation 20

Setup 21 Scintillators Lead Micro- megas

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

Comparision of different Detectors 23

Conclusion 24

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