We present analytical calculations, Finite Element Analysis modelling, and physical measurements of the interstrip capacitances for different potential strip geometries and dimensions of the readout boards for the GE2/1 triple-Gas Electron Multiplier detector in the CMS muon system upgrade. The main goal of the study is to find configurations that minimize the interstrip capacitances and consequently maximize the signal-to-noise ratio for the detector. We find agreement at the 1.5-4.8% level between the two methods of calculations and on the average at the 177c level between calculations and measurements. A configuration with halved strip lengths and doubled strip widths results in a measured 27-29% reduction over the original configuration while leaving the total number of strips unchanged. We have now adopted this design modification for all eight module types of the GE2/1 detector and will produce the final detector with this new strip design.
Interstrip capacitances of the readout board used in large triple-GEM detectors for the CMS Muon Upgrade
Aime, C;Calzaferri, S;Ferraro, A;Fiorina, D;Ressegotti, M;Riccardi, C;Romano, E;Vai, I;Vitulo, P;
2020-01-01
Abstract
We present analytical calculations, Finite Element Analysis modelling, and physical measurements of the interstrip capacitances for different potential strip geometries and dimensions of the readout boards for the GE2/1 triple-Gas Electron Multiplier detector in the CMS muon system upgrade. The main goal of the study is to find configurations that minimize the interstrip capacitances and consequently maximize the signal-to-noise ratio for the detector. We find agreement at the 1.5-4.8% level between the two methods of calculations and on the average at the 177c level between calculations and measurements. A configuration with halved strip lengths and doubled strip widths results in a measured 27-29% reduction over the original configuration while leaving the total number of strips unchanged. We have now adopted this design modification for all eight module types of the GE2/1 detector and will produce the final detector with this new strip design.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
