The high pseudo-rapidity region of the CMS muon system is covered by Cathode Strip Chambers (CSC) only and lacks redundant coverage despite the fact that it is a challenging region for muons in terms ...of backgrounds and momentum resolution. In order to maintain good efficiency for the muon trigger in this region additional RPCs are planned to be installed in the two outermost stations at low angle named RE3/1 and RE4/1. These stations will use RPCs with finer granularity and good timing resolution to mitigate background effects and to increase the redundancy of the system.
As it is known, pyloric stenosis among newborns and infants represents a high or complete obturation caused by stomach circular muscles hypertrophy. This disease is widely spread in the world. ...According to the reference data, the prevalence of this disease is about one per 200-300 newborns. Despite of the many surveys and investigations, ethiopathogenesis of pylorostenosis remains the issue of debates. Some of the authors consider pyloric stenosis as the innate defect of evolution, while others think that the enlargement of pylorus circular muscles is caused by working hypertrophy. According to our tests performed on the laboratory animals and developed experimental model of the disease, pyloric stenosis may be considered as an inborn pathology. The leading place in its etiology takes the partial impenetrability caused by the swelling of pylorus mucus (allergic, inflammation) and as a consequence development of working hypertrophy.
The RPC muon detector of the CMS experiment at the LHC (CERN, Geneva, Switzerland) is equipped with a Gas Gain Monitoring (GGM) system. A report on the stability of the system during the 2011-2012 ...data taking run is given, as well as the observation of an effect which suggests a novel method for the monitoring of gas mixture composition.
CMS RPC tracker muon reconstruction Goh, J.; Kim, M.S.; Ban, Y. ...
Journal of instrumentation,
10/2014, Letnik:
9, Številka:
10
Journal Article
Recenzirano
Odprti dostop
A new muon reconstruction algorithm is introduced at the CMS experiment. This algorithm reconstructs muons using only the central tracker and the Resistive Plate Chamber (RPC). The aim of this work ...is to study how a muon reconstructed only with tracker and RPC information would perform compared to the standard muon reconstruction of the CMS detector. The efficiencies to reconstruct and identify a RPC muon with a transverse momentum greater than 20 GeV/c are measured. The probabilities to misidentify hadrons as muons at low transverse momentum are also reported. These probabilities are compared to the standard muon identification used at CMS.
The Resistive Plate Chambers (RPC) are used in the CMS experiment at the trigger level and also in the standard offline muon reconstruction. In order to guarantee the quality of the data collected ...and to monitor online the detector performance, a set of tools has been developed in CMS which is heavily used in the RPC system. The Web-based monitoring (WBM) is a set of java servlets that allows users to check the performance of the hardware during data taking, providing distributions and history plots of all the parameters. The functionalities of the RPC WBM monitoring tools are presented along with studies of the detector performance as a function of growing luminosity and environmental conditions that are tracked over time.
The straw tube technology for the LHCb outer tracking system Bachmann, S.; Bagaturia, I.; Deppe, H. ...
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment,
12/2004, Letnik:
535, Številka:
1
Journal Article
Recenzirano
Odprti dostop
For the outer tracking system of the LHCb spectrometer 53.760 straws of 2.5
m length will be used. They are arranged in detector modules of 5
m length and 0.34
m width. The envisaged spatial ...resolution over the entire active area is 200
μ
m resulting in stringent requirements on the accuracy for the module construction.
In this paper we discuss the optimisation of the straws, design and construction of detector modules. The long-term operation properties of straws in two different counting gases, Ar/CO
2
(70/30) and Ar/CO
2
/CF
4
(75/10/15), are compared.
The straw tube technology for the LHCb outer tracking system BACHMANN, S; BAGATURIA, I; DEPPE, H ...
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment,
12/2004, Letnik:
535, Številka:
1-2
Journal Article
PDF
