Description
Poster session
Dr
Burak Bilki
(Argonne National Laboratory)
07/02/2012, 18:30
New ideas
poster presentation
The Digital Hadron Calorimeter (DHCAL) is a large scale
prototype of an imaging calorimeter, using Resistive Plate
Chambers (RPCs) as active medium. The calorimeter counts
close to 500,000 readout channels.
In this talk we will present the response of the DHCAL to
hadrons and positrons in the energy range of 2 to 120 GeV.
After detailing the event selection, the linearity of the...
Mr
yongwook baek
(LPC, Univ. Blaise Pascal, CNRS-IN2P3, Clermont-Ferrand, France)
07/02/2012, 18:31
Performance of RPC systems
poster presentation
ALICE (A Large Ion Collider Experiment) is the experiment dedicated to the study of ultra-relativistic heavy ion collisions at LHC. The ALICE Muon Spectrometer is mostly designed to detect muons from quarkonia and heavy flavour decays in a large range of forward pseudo-rapidity. Its performance should fulfil an operation in the high multiplicity environment from central Pb-Pb collisions as...
Dr
Satyanarayana Bheesette
(Tata Institute of Fundamental Research, Mumbai)
07/02/2012, 18:32
Triggering at high rates
poster presentation
The India based Neutrino Observatory (INO) collaboration is planning to build a 50 kton magnetized iron calorimeter (ICAL). ICAL will use about 28,800 single gap glass Resistive Plate Chambers (RPCs) of about 2m ร 2m in size and operated in the avalanche mode, as its active detector elements. About 3.6 million electronic channels need to be instrumented in ICAL. ICALโs Data Acquisition (DAQ)...
Luis Lopes
(Laboratรณrio de Instrumentaรงรฃo e Fรญsica Experimental de Partรญculas (LIP))
07/02/2012, 18:33
Ageing and interactions with materials
poster presentation
The capability of covering very large areas at low cost, besides showing excellent performance in many aspects, motivated the application of RPCs to Nuclear and High-Energy Physics and also to Cosmic Ray research in experiments such as COVER-PLASTEX and ARGO/YBJ.
Such detectors, however, require indoor conditions and support systems. For very high energy cosmic ray research, where shower...
Mr
Mircho rodozov
(PhD student)
07/02/2012, 18:34
Performance of RPC systems
poster presentation
The radiation background levels in the CMS RPCs have been measured by using proton--proton collision data at $\sqrt{s} = 7$~\TeV collected by CMS in 2010 and 2011 and have been analyzed as a function of the LHC parameters. The dependence on the LHC instantaneous luminosity has been studied over several orders of magnitude. The background distribution in the RPC detector has been carefully...
Mr
Minsuk Kim
(postdoc)
07/02/2012, 18:35
Performance of RPC systems
poster presentation
Muon tracks in the events collected by the CMS detector are triggered and reconstructed using the Drift Tube (DT) in the barrel, Cathode Strip Chambers (CSC) in the endcap, and Resistive Plate Chambers (RPC) in both barrel and endcap regions. RPC hits are mainly used as dedicated trigger detector, however they give a contribution in the muon reconstruction as well. Efficiency contribution to...
Mr
Stefano Colafranceschi
(LNF)
07/02/2012, 18:36
Ageing and interactions with materials
poster presentation
Performance of the Gas Gain Monitoring system, installed in 2009 at CMS Experiment, are presented. The GGM is aiming to keep under control the gas quality of the CMS RPC closed loop gas system. To perform this task the GGM is made of single-gap RPCs arranged in a cosmic ray telescope, with charge readout for online monitoring of working point; this provides a fast and accurate determination of...
Umberto Maria Riccardo Berzano
(PV)
07/02/2012, 18:37
Performance of RPC systems
poster presentation
The Resistive Plate Chambers are used in the CMS experiment as a dedicated muon detector system which covers the whole geometric acceptance up to a pseudorapidity of 1.6 with a total of 480 chambers in the barrel and 432 in the endcaps. In order to guarantee the quality of the data collected and to monitor on-line the detector performance, a set of tools have been developed in CMS and heavily...
Mr
Georgy Kornakov
(Univ. Santiago de Compostela)
07/02/2012, 18:38
Performance of RPC systems
poster presentation
In the last months of 2009, during the commissioning of the HADES tRPC TOF wall at the GSI (Darmstadt, Germany), more than 500 million cosmic ray data were taken with a precision in time measurement below 100ps for each tRPC cell. The six sectors, with an area greater than 1 square meter each, were placed horizontally in pairs, with their axes pointing in the direction east-west, and a...
Dr
Paolo Camarri
(ROMA2)
07/02/2012, 18:39
Performance of RPC systems
poster presentation
The Resistive Plate Chambers used in the ARGO-YBJ experiment have been working uninterruptedly since the deployment of the detector was completed in October, 2007. The ARGO-YBJ Detector Control System provides constant monitoring of the environmental parameters and of the operational conditions of the RPCs. Here we summarize the monitoring records collected in the last four years by...
Ferdinando Felli
(Laboratori Nazionali di Frascati dell'INFN and Sapienza Universita` di Roma)
07/02/2012, 18:40
Ageing and interactions with materials
poster presentation
Lineseed oil coated bakelite plates have been widely used over the past 15 years for small and large RPC systems. The formation of defects responsible for dark current increase and eventually discharge in high-radiation applications was observed in the past. Studies have been recently performed to identify and characterize the defects. Results of a new high-statistics survey of the defect...
Dr
Liang HAN
(Univ. of Science & Technology of China (USTC))
07/02/2012, 18:41
Triggering at high rates
poster presentation
As part of the R&D efforts for ATLAS Forward Muon detector upgrade, we are developing
low resistivity Bakelite plate with about 1mm thickness for thin-gap RPC as the added
level-1 trigger system arming to provide high rate capability and small cluster size
to achieve fine granularity required for the upgrade in super-LHC running environment.
The resistivity, uniformity of the Bakelite...
Mr
Grzegorz Korcyl
(Jagiellonian University)
07/02/2012, 18:42
New ideas
poster presentation
Most of the physics experiments involving charged particle identification require precise time measurements. The rising requirements concerning the time resolution, the channel density, the accepted hit rate and finally the price per channel, force the development of new and versatile solutions which can be used in many applications.
In order to meet these requirements, a Time to Digital...
Ms
Xin ZHOU
(TSINGHUA UNIVERSITY)
07/02/2012, 18:43
Triggering at high rates
poster presentation
A fully current-mode front-end ASIC has been developed for MRPC detectors for TOF measurements. Unlike NINO or PADI developed by CERN and GSI respectively, it uses direct current discrimination to get the timing signal. It has fast time response at low power consumption and high time resolution can be achieved even for small signals. A detailed analysis and demonstration will be described in...
Enrico Pastori
(RM2)
07/02/2012, 18:44
Performance of RPC systems
poster presentation
A new gas distribution system has been designed to optimize the fine structure of the gas distribution of each single gas gap in view of the increasing LHC luminosity. Taking as input the present background rate distribution the new input impedances will take in to account the gap current in the gas change rate calculation.
The new system will also be designed to maintain proportionality on a...
Carla Lupi
(Sapienza Universita` di Roma)
07/02/2012, 18:45
Ageing and interactions with materials
poster presentation
Gas purifiers in closed-loop gas systems are widely used in large experiments at LHC. A study and characterization of chemical performances has been performed.
Stefano Colafranceschi
(Laboratori Nazionali di Frascati dell'INFN, Sapienza Universita' di Roma and CERN)
07/02/2012, 18:46
Ageing and interactions with materials
poster presentation
Gas recirculation systems are widely used in RPC detectors to cope with large gas mixture volumes and costs. A new long-term systematic study of gas purifiers has been carried out at CERN in a low-radiation test area, with the use of RPC chambers with currents monitoring, and gas analysis sampling points. The study aimed to measure the lifetime of purifiers after regeneration, to confirm the...
Cristian Vendittozzi
(Laboratori Nazionali di Frascati dell'INFN and Sapienza Universita` di Roma)
07/02/2012, 18:47
Ageing and interactions with materials
poster presentation
Environmental variables such as temperature, atmospheric pressure and humidity affect dramatically the response of RPC detectors, as well as of all gas-based detectors. A redundant single-gap system composed of 15 RPC detectors is in operation in a cosmic ray telescope at Frascati, with ADC charge readout and detailed environmental sensor system. Results on new algorithms for online...
