1. My Working Experience at CERN
9/7/2009 – 7/8/2009
My Working Experience at CERN
Pavlos Progias
student in Electrical Engineering and Computer Engineering
Demokritos University of Thrace

2. Projects occupied with @ CERN
Micromegas Research
Micromegas Trigger Electronics
Micromegas Test Beam Shifts
Micromegas Electronics – Digital Representation
Gas Studies – “Garfield” simulation
“HSPICE Simulation of Thin-Gap Cathode Strip Chambers” - Implementation in NI Multisim

3. MM Research Understand how MM works
Help with adjusting MM internal distances

4. MM Trigger Electronics
Get familiarized with MM electronics and data acquisition systems
Help MM electronics assembly

5. MM Test Beam Shifts Work as a shifter Data logging
MM voltage – angle etc adjusting

6. MM Electronics - Digital Representation 1/2
Use:
Recording of 2009 Test Beam Setup
Future Reference
Easier for someone new to understand MM electronics

7. MM Electronics - Digital Representation 2/2

8. Gas Studies 1/3 Motivation Understand gas physics
Become familiar with “Garfield” simulation program
Produce something potentially useful

9. Gas Studies 2/3 Gas Cross-Sections
Used by “Magboltz” program to calculate e- drift velocity
ArCO2 Cross Sections
Ar 80%
CO2 Percentage
Minimum eV
0.33 10
0.59 11
0.60 12
0.62 13
0.63 14
0.64 15
0.66 16
0.67 17
0.69 18
0.70 19
0.71 20
0.72
Ar 90%
Ar 100%
Ramsauer Dip

10. ArCO2 Mixture with Water Contamination of 0.5% to 3%
Gas Studies 3/3
Ar 80%
Ar 82%
Ar 85%
Ar 88%
Ar 90%
Ar 100%
ArCO2 Mixture with Water Contamination of 0.5% to 3%

11. Simulation of Thin-Gap Cathode Strip Chambers 1/2
“HSPICE Simulation of Thin-Gap Cathode Strip Chambers”, P. O’Connor, Brookhaven National Laboratory, Instrumentation Division, Upton, NY 11973

12. Simulation of Thin-Gap Cathode Strip Chambers 2/2

13. Thanks Prof. E. Gazis Dr. R. Avramidou The whole Micromegas team
For providing me with the opportunity to work here
Dr. R. Avramidou
For supporting and helping me during my stay
The whole Micromegas team
For their help and cooperation