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

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

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

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

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

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

MM Electronics - Digital Representation 2/2

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

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

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%

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

Simulation of Thin-Gap Cathode Strip Chambers 2/2

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