Performances and ageing study of resistive-anodes Micromegas detectors for HL-LHC environment

Jeanneau, F; Alexopoulos, T; Attie, D; Boyer, M; Derre, J; Fanourakis, G; Ferrer-Ribas, E; Galan, J; Gazis, E; Geralis, T; Giganon, A; Giomataris, I; Herlant, S; Manjarres, J; Ntomari, E; Schune, Ph; Titov, M; Tsipolitis, G

dc.contributor.author	Jeanneau, F	en
dc.contributor.author	Alexopoulos, T	en
dc.contributor.author	Attie, D	en
dc.contributor.author	Boyer, M	en
dc.contributor.author	Derre, J	en
dc.contributor.author	Fanourakis, G	en
dc.contributor.author	Ferrer-Ribas, E	en
dc.contributor.author	Galan, J	en
dc.contributor.author	Gazis, E	en
dc.contributor.author	Geralis, T	en
dc.contributor.author	Giganon, A	en
dc.contributor.author	Giomataris, I	en
dc.contributor.author	Herlant, S	en
dc.contributor.author	Manjarres, J	en
dc.contributor.author	Ntomari, E	en
dc.contributor.author	Schune, Ph	en
dc.contributor.author	Titov, M	en
dc.contributor.author	Tsipolitis, G	en
dc.date.accessioned	2014-03-01T02:53:59Z
dc.date.available	2014-03-01T02:53:59Z
dc.date.issued	2012	en
dc.identifier.issn	10957863	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/36516
dc.subject.other	Ageing effects	en
dc.subject.other	ATLAS detectors	en
dc.subject.other	Discharge probability	en
dc.subject.other	High flux	en
dc.subject.other	High rate capability	en
dc.subject.other	Integrated charge	en
dc.subject.other	Micromegas	en
dc.subject.other	Micromegas detector	en
dc.subject.other	Pile-ups	en
dc.subject.other	Position resolution	en
dc.subject.other	Radiation hardness	en
dc.subject.other	Resistive anodes	en
dc.subject.other	Resistive coatings	en
dc.subject.other	Resistive strips	en
dc.subject.other	Spatial resolution	en
dc.subject.other	Coatings	en
dc.subject.other	Efficiency	en
dc.subject.other	Electric sparks	en
dc.subject.other	Medical imaging	en
dc.subject.other	Nuclear physics	en
dc.subject.other	Piles	en
dc.subject.other	Detectors	en
dc.title	Performances and ageing study of resistive-anodes Micromegas detectors for HL-LHC environment	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1109/NSSMIC.2011.6154443	en
heal.identifier.secondary	http://dx.doi.org/10.1109/NSSMIC.2011.6154443	en
heal.identifier.secondary	6154443	en
heal.publicationDate	2012	en
heal.abstract	With the tenfold luminosity increase envisaged at the HL-LHC, the background (photons, neutrons, ...) and the event pile-up probability are expected to increase in proportion in the different experiments, especially in the forward regions like, for instance, the muons chambers of the ATLAS detector. Detectors based on the Micromegas [1] principle should be good alternatives for the detector upgrade in the HL-LHC framework because of a good spatial (< 100μm) and time (few ns) resolutions, high-rate capability, radiation hardness, good robustness and the possibility to build large areas. The aim of this study is to demonstrate that it is possible to reduce the discharge probability and protect the electronics by using a resistive anode plane in a high flux hadrons environment. Several prototypes of 10x10 cm2, with different pitches (0.5 to 2 mm) and different resistive layers have been tested at CERN (π+@SPS). Several tests have been performed with a telescope at different voltages to assess the performances of the detectors in terms of position resolution and efficiency. The spark behaviour in these conditions has also been evaluated. Resistive coating has been shown to be a successful method to reduce the effect of sparks on the efficiency of micromegas. A good spatial resolution (∼ 80μm) can be reached with a resistive strip coating detector of 1mm pitch and a high efficiency (> 98%) can be achieved with resistive-anode micromegas detector. An X-rays irradiation has been also performed, showing no ageing effect after more than 21 days exposure and an integrated charge of almost 1C. © 2011 IEEE.	en
heal.journalName	IEEE Nuclear Science Symposium Conference Record	en
dc.identifier.doi	10.1109/NSSMIC.2011.6154443	en
dc.identifier.spage	75	en
dc.identifier.epage	79	en