Performances of anode-resistive Micromegas for HL-LHC

Manjarres, J; 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; Jeanneau, F; Schune, Ph; Titov, M; Tsipolitis, G

dc.contributor.author	Manjarres, J	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	Jeanneau, F	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	17480221	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/36517
dc.subject	Micropattern gaseous detectors (MSGC, GEM, THGEM, RETHGEM, MHSP, MICROPIC, MICROMEGAS, InGrid, etc)	en
dc.subject	Performance of High Energy Physics Detectors	en
dc.title	Performances of anode-resistive Micromegas for HL-LHC	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1088/1748-0221/7/03/C03040	en
heal.identifier.secondary	http://dx.doi.org/10.1088/1748-0221/7/03/C03040	en
heal.identifier.secondary	C03040	en
heal.publicationDate	2012	en
heal.abstract	Micromegas technology is a promising candidate to replace Atlas forward muon chambers -tracking and trigger- for future HL-LHC upgrade of the experiment. The LHC accelerator luminosity will be ten times the nominal one, increasing background and pile-up event probability in the same proportion. This requires detector performances which are currently under studies in intensive RD activities. We studied performances of four different resistive Micromegas detectors and with different read-out strip pitches. These chambers were tested using ∼ 120 GeV momentum pions with rates from 25 up to 250 kHz/cm2, at H6 CERN-SPS beam line in autumn 2010. We found that the resolution is degraded, if the strip pitch is too wide with respect to the charge distribution at the readout plane. To reduce the systematic effects of the charge sharing we propose a cluster reconstruction algorithm. For narrow strip pitch 500μm we measure a resolution of ∼ 90 μm and a efficiency of ∼ 98%. The track angle effect on the efficiency was also studied. Our results show that resistive techniques induce no degradation on the efficiency or resolution, with respect to the standard Micromegas. In some configuration the resistive coating is able to reduce the discharge currents at least by a factor of 100 and no HV breakdown was observed. © 2012 IOP Publishing Ltd and Sissa Medialab srl.	en
heal.journalName	Journal of Instrumentation	en
dc.identifier.doi	10.1088/1748-0221/7/03/C03040	en
dc.identifier.volume	7	en
dc.identifier.issue	3	en