Measurements with Micromegas Detector Prototypes for the Atlas Myon System Anna Ravensburg and...
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Transcript of Measurements with Micromegas Detector Prototypes for the Atlas Myon System Anna Ravensburg and...
![Page 1: Measurements with Micromegas Detector Prototypes for the Atlas Myon System Anna Ravensburg and Pascal Grobecker CERN Internship 08.04. – 19.04.2013 .](https://reader036.fdocuments.in/reader036/viewer/2022062712/56649c6f5503460f949220e8/html5/thumbnails/1.jpg)
Measurements with Micromegas Detector Prototypes for the Atlas
Myon System
Anna Ravensburg and Pascal GrobeckerCERN Internship 08.04. – 19.04.2013
http://www.atlas.ch/photos/muons-tgc.html
![Page 2: Measurements with Micromegas Detector Prototypes for the Atlas Myon System Anna Ravensburg and Pascal Grobecker CERN Internship 08.04. – 19.04.2013 .](https://reader036.fdocuments.in/reader036/viewer/2022062712/56649c6f5503460f949220e8/html5/thumbnails/2.jpg)
Micromegas
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![Page 3: Measurements with Micromegas Detector Prototypes for the Atlas Myon System Anna Ravensburg and Pascal Grobecker CERN Internship 08.04. – 19.04.2013 .](https://reader036.fdocuments.in/reader036/viewer/2022062712/56649c6f5503460f949220e8/html5/thumbnails/3.jpg)
The ATLAS - Detector
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*http://core.physicsinfo.co.uk/filestore/104/atlas.jpg
Task: To build Myon-Detectors (blue) which work fasterTime: About 5 years
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Setup of a Particle Detector
4+
-+
Argon
Electric Field Particle
-+
-
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Avalanche-Effect
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-+
Argon
Electric Field Particle
-+
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- +
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Micro-Mesh Gaseous Detector
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Changed from http://en.wikipedia.org/wiki/File:MMPrincipe.png
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Problems at ATLAS with Micromegas
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Dust between Mesh and Strips
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Changed from http://en.wikipedia.org/wiki/File:MMPrincipe.png
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Irragularities of the Electric Field
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Our tasks
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Building a Micromegas Detector
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Gas in
Gas out
Preamplifier
Fe55
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Building a Setup for Measurements
Oscilloscope
To Power Supply
To Amplifier
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Building a Setup for Measurements
A Strips: +534VB Drift: -300V
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Our Measurements
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Our Measurements
36 86 136 186 2360
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Channel
Num
ber o
f inc
iden
ces
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Fe55: radioactive source
6 keV
Ar: Excitation
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Peakpositiony x 1 2 3 4 5
1 129 153 169 175 1502 144 159 169 172 1563 154 168 167 170 1644 168 176 168 171 1565 165 171 168 164 150
Deviation from averagey x 1 2 3 4 5
1 20.49% 5.70% 4.17% 7.86% 7.54%2 11.24% 2.00% 4.17% 6.02% 3.85%3 5.08% 3.55% 2.93% 4.78% 1.08%4 3.55% 8.48% 3.55% 5.40% 3.85%5 1.70% 5.40% 3.55% 1.08% 7.54%
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Building a Micromegas Detector
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Gas in
Gas out
Preamplifier
Fe55
![Page 18: Measurements with Micromegas Detector Prototypes for the Atlas Myon System Anna Ravensburg and Pascal Grobecker CERN Internship 08.04. – 19.04.2013 .](https://reader036.fdocuments.in/reader036/viewer/2022062712/56649c6f5503460f949220e8/html5/thumbnails/18.jpg)
Full Width at Half Maximum (FWHM)y x 1 2 3 4 5
1 64 42 46 48 482 57 40 43 45 583 62 44 48 46 524 59 45 47 49 555 65 51 44 48 55
1836 86 136 186 2360
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Channel
Num
ber o
f inc
iden
ces
Half MaximumFWHM
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Gain Curve
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460 470 480 490 500 510 520 530 54010
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Voltage
Peak
posi
tion
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Measurement of cosmic radiation
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Setup
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Scintillators
Lead
Micro-megas
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Our Measurements
22Fit Panel
ConsoleData of a Micro-megas detector with fitting line
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Comparision of different Detectors
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Conclusion
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![Page 25: Measurements with Micromegas Detector Prototypes for the Atlas Myon System Anna Ravensburg and Pascal Grobecker CERN Internship 08.04. – 19.04.2013 .](https://reader036.fdocuments.in/reader036/viewer/2022062712/56649c6f5503460f949220e8/html5/thumbnails/25.jpg)
Thank you for giving us the chance to come to CERN and have 12 great days! 25