Plasma Panel Sensor – Tel-Aviv September 27 2012
The Tel-Aviv University team • Professor Erez Etzion • Dr. Yan Ben-Hammou • Meny Ben-Moshe • Nir Guttman • Yiftah Silver
• 15 years of detectors R&D for High energy physics and the LHC • Testing the TGCs for the ATLAS experiment • Testing and developing the STGC for the ATLAS upgrade The lab is currently under construction, moving into a bigger room to better accommodate the test-bench, gas system, electronics etc. 9/27/2012 Tel Aviv University
Experiment setup 10 μ m position precision HV line quenched with 20M Ω of collimated source connected to a 1M Ω /100M Ω voltage divider Each RO line is X100 Attenuated and 100 Ω terminated 10 RO lines VME V560 Discriminator counter 9/27/2012 Tel Aviv University 4
Source position Source sits here 1cm thick, Delrin collimator, with a 3 mm slit opening 9/27/2012 Tel Aviv University 5
14 hour measurement • collimated Source was left on the same position (above RO channel 7) for ~14 hours. 9/27/2012 Tel Aviv University 6
r a 1 2 3 4 t i o hour 7 8 6 5 Each histogram shows the ratio 9 10 between each channel and the channel beneath the source (7). 9/27/2012 Tel Aviv University 7
Position scan • Each full turn of the micrometer moves the source by 1mm • Started the scan when the micrometer read is 60mm • Made 16 measurements each of 5minutes and 1mm apart. • CF4 gas, 600 Torr, 2316V . 9/27/2012 Tel Aviv University 8
49mm 50mm 51mm 52mm c p m Channel 53mm 54mm 55mm 56mm 59mm 60mm 57mm 58mm 9/7/2011 TAU - status report 9 9/27/2012
Source position measurement • points in this graph are the Gaussian fit results Errors are σ / √ (n-1) • • Numbers in the x-axis have no global meaning, simply the read of the micrometer and not the distance from any real point in space… • The electrode pitch in this panel (10 electrodes per inch) is the slope of this line: 0.4 electrodes per mm… 9/27/2012 Tel Aviv University 10
signal processing Panel RO 105 85 55 24 HV • Measuring the Volts pulse as a function of HV line number. Time 9/27/2012 Tel Aviv University
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