CERN Accelerating science

ATLAS Note
Report number	ATL-MUON-PROC-2016-005
Title	Design of the ATLAS New Small Wheel Gas Distribution System for the Micromegas Detector Modules
Author(s)	Gazis, Evangelos (National Technical University of Athens) ; Alexopoulos, Theodoros (National Technical University of Athens) ; Maltezos, Stavros (National Technical University of Athens) ; Vlachos, Sotirios (National Technical University of Athens) ; Karentzos, Efstathios (National Technical University of Athens) ; Koulouris, Aimilianos (National Technical University of Athens) ; Moschovakos, Paris (National Technical University of Athens) ; Koutelieris, Georgios (National Technical University of Athens)
Corporate Author(s)	The ATLAS collaboration
Collaboration	ATLAS Collaboration
Publication	2016
Imprint	16 Sep 2016
Number of pages	4
In:	PoS LHCP2016 (2016) 198
In:	4th Conference on Large Hadron Collider Physics 2016 (LHCP 2016), Lund, Sweden, 13 - 18 Jun 2016, pp.198
DOI	10.1109/NSSMIC.2016.8069759
Subject category	Particle Physics - Experiment
Accelerator/Facility, Experiment	CERN LHC ; ATLAS
Free keywords	New Small Wheel, Gas distribution System, Micromegas detector
Abstract	In this work we present and describe the methodology, the particular calculations and simulations accordingly to achieve the appropriate gas flow rates ensuring a uniform gas distribution among the same type of NSW Micromegas modules. The majority of the components used are in large multiplicity so space saving criteria is taking into account and simplicity on the performance with respect to the total cost as well. An appropriate simulation program has been developed for studying the overall gas system determining the gauge pressure, flow rate in the crucial points and branches, respectively. Moreover, an overall prototype configuration, implemented at the NTUA laboratory and based on the Lock-in Amplifier technique to be used in conjunction with the gas leak test via the FRL method is presented. The obtained performances, by means of sensitivity and S/N ratio improvement, are also discussed.
Copyright/License	Preprint: (License: CC-BY-4.0)

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