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, P; Titov, M; Tsipolitis, G; Wang, W

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, P	en
dc.contributor.author	Titov, M	en
dc.contributor.author	Tsipolitis, G	en
dc.contributor.author	Wang, W	en
dc.date.accessioned	2014-03-01T02:11:57Z
dc.date.available	2014-03-01T02:11:57Z
dc.date.issued	2012	en
dc.identifier.issn	00189499	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/29976
dc.subject	ATLAS	en
dc.subject	HL-LHC	en
dc.subject	Micromegas	en
dc.subject	MPGD	en
dc.subject	resistive	en
dc.subject	spark	en
dc.subject.other	ATLAS	en
dc.subject.other	HL-LHC	en
dc.subject.other	Micromegas	en
dc.subject.other	MPGD	en
dc.subject.other	resistive	en
dc.subject.other	Coatings	en
dc.subject.other	Efficiency	en
dc.subject.other	Electric sparks	en
dc.subject.other	Detectors	en
dc.title	Performances and ageing study of resistive-anodes micromegas detectors for HL-LHC environment	en
heal.type	journalArticle	en
heal.identifier.primary	10.1109/TNS.2012.2198492	en
heal.identifier.secondary	http://dx.doi.org/10.1109/TNS.2012.2198492	en
heal.identifier.secondary	6218143	en
heal.publicationDate	2012	en
heal.abstract	With the tenfold luminosity increase envisaged at the HL-LHC, the background (i.e., photons, neutrons, ..) and the event pileup probability are expected to highly increase in proportion in the different experiments, especially in the forward regions, for instance the muons chambers of the ATLAS detector. Detectors based on the Micromegas principle should be good alternatives for the detector upgrade in the HL-LHC framework because of its 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 10 × 10 cm2, with different pitches (0.5-2 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 performance of the detectors in terms of position resolution and efficiency. The spark behavior 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 (\∼ 80 μm) can be reached with a resistive strip coating detector of 1-mm pitch, and a high efficiency ( > 98\%) can be achieved with resistive-anode micromegas detector. An X-rays irradiation has also been performed, showing no ageing effect after more than 21 days exposure and an integrated charge of almost 1C. © 2012 IEEE.	en
heal.journalName	IEEE Transactions on Nuclear Science	en
dc.identifier.doi	10.1109/TNS.2012.2198492	en
dc.identifier.volume	59	en
dc.identifier.issue	4 PART 3	en
dc.identifier.spage	1711	en
dc.identifier.epage	1716	en